Portable sound box

Abstract

The utility model discloses a portable sound box, which comprises a loudspeaker unit and an expansion shell, the expansion shell comprises an inner cover body and an outer cover body, the inner cover body is provided with a window communicated with an inner cavity of the expansion shell, the window is provided with the loudspeaker unit, the inner cover body is movably nested in the outer cover body, the inner cover body is provided with a clamping block, and the clamping block is connected with the outer cover body. The inner wall of the outer cover body is provided with a groove position matched with the clamping block, the groove position comprises a first rotating groove, a sliding groove and a second rotating groove which are sequentially communicated, the first rotating groove and the second rotating groove are formed in the circumferential direction of the inner cover body, and the sliding groove is formed in the axial direction of the inner cover body. According to the portable sound box, the portability, the bass effect and the production yield of the sound box are well considered.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic converters, in particular to a portable speaker. Background Art

[0002] For portability, it is usually hoped that the speaker (such as a Bluetooth speaker) can be small in size. However, when the size is reduced, the volume inside the speaker will be correspondingly reduced, so that its bass effect will be deteriorated.

[0003] In order to obtain good bass effects for traditional small-volume portable speakers, a common practice is to adjust the compliance or weight of the speaker unit to obtain a low F0 index. However, blindly adjusting the compliance and weight to obtain a low F0 index will result in a low speaker production yield, which will undoubtedly increase costs. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a portable speaker with good bass effect.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a portable speaker, comprising:

[0006] Speaker unit;

[0007] An expansion shell, the expansion shell includes an inner cover body and an outer cover body, the inner cover body is provided with a window connected to the inner cavity of the expansion shell, the speaker unit is installed at the window, the inner cover body can be movably nested in the outer cover body, the inner cover body is provided with a card block, the inner wall of the outer cover body is provided with a groove matching the card block, the groove includes a first rotating groove, a sliding groove and a second rotating groove connected in sequence, the first rotating groove and the second rotating groove are both arranged along the circumferential direction of the inner cover body, and the sliding groove is arranged along the axial direction of the inner cover body.

[0008] In one embodiment, the first rotation groove on the outer cover is disposed close to the bottom end of the outer cover, and the second rotation groove on the outer cover is disposed close to the top end of the outer cover.

[0009] In one embodiment, the bottom end of the inner cover body has a first limiting ring extending outward, the top end of the outer cover body has a second limiting ring extending inward, and a sealing ring is provided between the first limiting ring and the second limiting ring. When the inner cover body is axially extended to the maximum stroke position relative to the outer cover body, the sealing ring respectively contacts the first limiting ring and the second limiting ring.

[0010] In one embodiment, the clamping block is disposed on the first limiting ring and protrudes outward relative to the first limiting ring.

[0011] In one embodiment, the expansion housing further includes an intermediate component, and the intermediate component includes at least one intermediate cylinder, the inner wall of the intermediate cylinder is provided with the groove, and the outer wall of the intermediate cylinder is provided with the block.

[0012] In one embodiment, the number of the intermediate cylinder is one, the groove on the intermediate cylinder cooperates with the block on the inner cover, and the block on the intermediate cylinder cooperates with the groove on the outer cover.

[0013] In one embodiment, there are multiple intermediate cylinders, which are movably nested together from the inside to the outside, the grooves on the intermediate cylinders located in the innermost circle cooperate with the blocks on the inner cover, and the blocks on the intermediate cylinders located in the outermost circle cooperate with the grooves on the outer cover; among the two adjacent intermediate cylinders, the blocks on the intermediate cylinders located in the inner circle cooperate with the grooves on the intermediate cylinders located in the outer circle.

[0014] In one embodiment, in the groove of the intermediate cylinder, the first rotation groove is located below the second rotation groove, and the first rotation groove is connected to the bottom surface of the intermediate cylinder.

[0015] In one embodiment, an opening is provided at the bottom of the outer cover, and a vibrating diaphragm assembly is provided at the opening.

[0016] In one embodiment, the first rotation groove and the second rotation groove in the slot are located on the same side or different sides of the sliding groove.

[0017] The beneficial effects of the utility model are:

[0018] The portable speaker can realize the expansion / contraction of the inner cavity volume of the speaker through stretching rotation / compression rotation, does not require a spring, and has a simple structure.

[0019] When carrying it, the inner cover can be slid toward the outer cover and rotated to reduce the overall volume of the portable speaker. When the speaker needs to be played, the inner cover can be slid away from the outer cover and rotated to increase the overall volume of the portable speaker to obtain a better bass effect. In other words, the portable speaker takes into account both the portability and bass effect of the speaker, and has a low manufacturing cost and a high production yield.

[0020] The first rotating groove and the second rotating groove are respectively used to lock the storage state and the unfolded state of the portable speaker. The cooperation between the groove and the card block can effectively improve the effectiveness of the user's operation of changing the state of the portable speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 the structures shown in these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of the portable speaker in the first embodiment of the present utility model in the unfolded state;

[0023] Figure 2 This is a cross-sectional view of the portable speaker of Embodiment 1 of the utility model in the storage state;

[0024] Figure 3 It is a schematic structural diagram of the middle cylinder in the portable speaker of the first embodiment of the utility model.

[0025] Description of Figure Numbers:

[0026] 1. Inner cover body;

[0027] 2. outer cover; 21. outer cylinder; 22. bottom plate;

[0028] 3. Speaker unit;

[0029] 4. Card block;

[0030] 5. slot; 51. first rotating slot; 52. sliding slot; 53. second rotating slot;

[0031] 6. The first limiting ring;

[0032] 7. Second limiting ring;

[0033] 8. Sealing ring;

[0034] 9. Vibrating diaphragm assembly;

[0035] 10. Intermediate cylinder. DETAILED DESCRIPTION

[0036] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0040] In addition, if the meaning of "and / or" appears in the full text is to include three parallel solutions, taking "and / or" as an example, it includes solutions, or solutions, or solutions that are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] Embodiment 1

[0043] Please refer to Figures 1 to 3 The first embodiment of the utility model is: a portable speaker, comprising a speaker unit 3 and an expansion shell, the expansion shell comprising an inner cover 1 and an outer cover 2, the inner cover 1 is provided with a window connected to the inner cavity of the expansion shell, the speaker unit 3 is installed at the window, the inner cover 1 can be movably nested in the outer cover 2, the inner cover 1 is provided with a card block 4, the inner wall of the outer cover 2 is provided with a slot 5 matched with the card block 4, the slot 5 comprises a first rotating slot 51, a sliding slot 52 and a second rotating slot 53 connected in sequence, the first rotating slot 51 and the second rotating slot 53 are both arranged along the circumference of the inner cover 1, and the sliding slot 52 is arranged along the axial direction of the inner cover 1. The types of the portable speakers include but are not limited to Bluetooth wireless speakers.

[0044] It is easy to understand that when the block 4 slides along the first rotating groove 51 or the second rotating groove 53, the inner cover body 1 rotates relative to the outer cover body 2, and when the block 4 slides along the sliding groove 52, the inner cover body 1 expands and contracts axially relative to the outer cover body 2.

[0045] In order to increase the expansion upper limit of the expansion shell and thus improve the bass effect of the portable speaker to a greater extent, the first rotation groove 51 on the outer cover body 2 is arranged close to the bottom end of the outer cover body 2, and the second rotation groove 53 on the outer cover body 2 is arranged close to the top end of the outer cover body 2.

[0046] The bottom end of the inner cover 1 has a first limiting ring 6 extending outward, the top end of the outer cover 2 has a second limiting ring 7 extending inward, and a sealing ring 8 is provided between the first limiting ring 6 and the second limiting ring 7. When the inner cover 1 is extended to the maximum stroke position along the axial direction relative to the outer cover 2, the sealing ring 8 respectively contacts the first limiting ring 6 and the second limiting ring 7. The first limiting ring 6 and the second limiting ring 7 cooperate with the sealing ring 8 to effectively improve the airtightness of the expansion shell of the portable speaker in the unfolded state, thereby improving the acoustic performance of the portable speaker to a greater extent.

[0047] As a preferred embodiment, the block 4 is disposed on the first limiting ring 6 and protrudes outward relative to the first limiting ring 6. Of course, the block 4 may also be disposed on the outer wall surface of the inner cover body 1.

[0048] Optionally, an opening is provided at the bottom of the outer cover 2, and a vibrating diaphragm assembly 9 is provided at the opening. In this embodiment, the outer cover 2 includes an outer cylinder 21 and a bottom plate 22 connected to each other, the opening is provided on the bottom plate 22, the slot 5 is provided on the inner wall of the outer cylinder 21, the first rotation slot 51 is located below the second rotation slot 53, and in order to facilitate the assembly of the expansion housing, the first rotation slot 51 is preferably connected to the bottom surface of the outer cylinder 21, and the block 4 is assembled into the slot 5 from the connection position between the first rotation slot 51 and the bottom surface of the outer cylinder 21.

[0049] In this embodiment, the first rotating groove 51 and the second rotating groove 53 in the slot 5 are located on the same side of the sliding groove 52. In other embodiments, it is also acceptable that the first rotating groove 51 and the second rotating groove 53 in the slot 5 are located on different sides of the sliding groove 52.

[0050] In order to allow the portable speaker to have a smaller storage volume and a larger expansion volume, optionally, the expansion shell also includes an intermediate component, and the intermediate component includes at least one intermediate cylinder 10, the inner wall of the intermediate cylinder 10 is provided with the groove 5, and the outer wall of the intermediate cylinder 10 is provided with the block 4.

[0051] In this embodiment, the number of the intermediate cylinder 10 is one, the slot 5 on the intermediate cylinder 10 cooperates with the block 4 on the inner cover 1 , and the block 4 on the intermediate cylinder 10 cooperates with the slot 5 on the outer cover 2 .

[0052] In order to ensure the airtightness of the expansion shell, the bottom end of the intermediate cylinder 10 is provided with the first limiting ring 6 extending outward, and the top end of the intermediate cylinder 10 is provided with the second limiting ring 7 extending inward. At this time, the first limiting ring 6 on the intermediate cylinder 10 cooperates with the second limiting ring 7 on the outer cover 2, and the sealing ring 8 is provided therebetween. The second limiting ring 7 on the intermediate cylinder 10 cooperates with the first limiting ring 6 on the inner cover 1, and the sealing ring 8 is also provided therebetween.

[0053] Similarly, in the slot 5 of the intermediate cylinder 10 , the first rotation slot 51 is located below the second rotation slot 53 , and the first rotation slot 51 is connected to the bottom surface of the intermediate cylinder 10 .

[0054] As an extended implementation mode, optionally, the number of the intermediate cylinders 10 is multiple, and the multiple intermediate cylinders 10 are movably nested together in sequence from the inside to the outside, the groove 5 on the intermediate cylinder 10 located in the innermost circle cooperates with the block 4 on the inner cover 1, and the block 4 on the intermediate cylinder 10 located in the outermost circle cooperates with the groove 5 on the outer cover 2; among the two adjacent intermediate cylinders 10 inside and outside, the block 4 on the intermediate cylinder 10 located in the inner circle cooperates with the groove 5 on the intermediate cylinder 10 located in the outer circle. At this time, in order to meet the airtightness requirements of the expansion shell, the first limiting ring 6 on the intermediate cylinder 10 located in the innermost circle cooperates with the second limiting ring 7 on the intermediate cylinder 10 adjacent thereto, and the sealing ring 8 is provided between the two, and the second limiting ring 7 on the intermediate cylinder 10 located in the outermost circle cooperates with the first limiting ring 6 on the intermediate cylinder 10 adjacent thereto, and the sealing ring 8 is provided between the two; in the two adjacent intermediate cylinders 10 inside and outside, the first limiting ring 6 on the intermediate cylinder 10 located in the inner circle cooperates with the second limiting ring 7 on the intermediate cylinder 10 located in the outer circle, and the sealing ring 8 is provided between the two.

[0055] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A portable speaker, characterized in that: include Speaker unit; An expansion shell, the expansion shell includes an inner cover body and an outer cover body, the inner cover body is provided with a window connected to the inner cavity of the expansion shell, the speaker unit is installed at the window, the inner cover body can be movably nested in the outer cover body, the inner cover body is provided with a card block, the inner wall of the outer cover body is provided with a groove matching the card block, the groove includes a first rotating groove, a sliding groove and a second rotating groove connected in sequence, the first rotating groove and the second rotating groove are both arranged along the circumferential direction of the inner cover body, and the sliding groove is arranged along the axial direction of the inner cover body.

2. The portable speaker according to claim 1, characterized in that: The first rotation groove on the outer cover is arranged close to the bottom end of the outer cover, and the second rotation groove on the outer cover is arranged close to the top end of the outer cover.

3. The portable speaker according to claim 2, characterized in that: The bottom end of the inner cover body has a first limiting ring extending outward, and the top end of the outer cover body has a second limiting ring extending inward, and a sealing ring is provided between the first limiting ring and the second limiting ring. When the inner cover body is axially extended to the maximum stroke position relative to the outer cover body, the sealing ring respectively contacts the first limiting ring and the second limiting ring.

4. The portable speaker according to claim 3, characterized in that: The clamping block is arranged on the first limiting ring and protrudes outward relative to the first limiting ring.

5. The portable speaker according to claim 1, characterized in that: The expansion housing further comprises an intermediate component, and the intermediate component comprises at least one intermediate cylinder, the inner wall of the intermediate cylinder is provided with the groove, and the outer wall of the intermediate cylinder is provided with the block.

6. The portable speaker according to claim 5, characterized in that: The number of the intermediate cylinder is one, the slot on the intermediate cylinder cooperates with the block on the inner cover, and the block on the intermediate cylinder cooperates with the slot on the outer cover.

7. The portable speaker according to claim 5, characterized in that: There are multiple intermediate cylinders, which are movably nested together from the inside to the outside in sequence, the grooves on the intermediate cylinders located in the innermost circle cooperate with the blocks on the inner cover, and the blocks on the intermediate cylinders located in the outermost circle cooperate with the grooves on the outer cover; among the two adjacent intermediate cylinders, the blocks on the intermediate cylinders located in the inner circle cooperate with the grooves on the intermediate cylinders located in the outer circle.

8. The portable speaker according to claim 5, characterized in that: In the slot of the intermediate cylinder, the first rotation slot is located below the second rotation slot, and the first rotation slot is connected to the bottom surface of the intermediate cylinder.

9. The portable speaker according to claim 1, characterized in that: An opening is arranged at the bottom of the outer cover, and a vibration diaphragm assembly is arranged at the opening.

10. The portable speaker according to claim 1, characterized in that: The first rotation groove and the second rotation groove in the slot are located on the same side or different sides of the sliding groove.

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