Head-mounted voice broadcast device

Abstract

The utility model relates to the technical field of voice broadcasting, in particular to a head-mounted voice broadcasting device which comprises two head beams, arc-shaped racks are fixedly connected to the adjacent surfaces of the two head beams, a shell mechanism for containing a circuit control board and a loudspeaker is arranged at the other ends of the head beams, and the shell mechanism comprises a containing shell, a middle frame and an insertion block. The containing shell is fixedly connected to one end of the head beam, the containing shell is used for containing the circuit control board and the loudspeaker, and the middle frame is detachably connected to the outer surface of the containing shell. When the head beam and the shell mechanism are protected, the outer surface of the middle frame is integrally provided with the outwards-protruding frame body in an injection molding mode, and the edge position of the containing shell is protected; and the adjusting frame is matched with the first protection frame to protect the head beam, and the second protection frame increases the protection range of the head beam, so that the head beam and the accommodating shell are prevented from being damaged due to direct contact between the head beam and the accommodating shell and the ground when the device falls off.

Description

Technical Field

[0001] This utility model relates to the field of voice broadcasting technology, specifically a head-mounted voice broadcasting device. Background Technology

[0002] Head-mounted voice broadcasting devices are mostly used in scenarios where timely reception of voice information is required, such as receiving work instructions in industrial production, listening to voice teaching content in learning, and receiving voice navigation or sports data broadcasts during exercise. Their structure is similar to English listening headphones, fixed to the user's head via a headband, facilitating direct sound transmission to the ears. They are portable and flexible, and do not occupy the user's hands, allowing for simultaneous use while performing other activities. For example, see announcement number CN209879760U, which describes a head-mounted Mandarin practice broadcasting device, including a headband elastic plate. Both ends of the headband elastic plate have connecting grooves, and connecting plates are connected within these grooves. The connecting plates have mounting grooves inside, and a shaft is connected to the mounting groove via a bearing. The shaft is connected to the mounting groove via a torsion spring.

[0003] The aforementioned device is adjustable, but the adjustment structure is relatively weak compared to the integrally injection molded parts. When dropped, the outer shell directly contacts the ground, which can easily cause damage to the outer shell of the device, leading to increased maintenance costs later. Utility Model Content

[0004] The purpose of this invention is to provide a head-mounted voice broadcasting device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A head-mounted voice broadcasting device includes two headbands, with an arc-shaped rack fixedly connected to the adjacent surfaces of the two headbands;

[0007] The other end of the headband is provided with a housing mechanism for accommodating the circuit control board and the speaker. The housing mechanism includes a housing shell, a middle frame and an insertion block. The housing shell is fixedly connected to one end of the headband and is used to accommodate the circuit control board and the speaker. The middle frame is detachably connected to the outer surface of the housing shell. The insertion block is fixedly connected to the outer surface of the middle frame. A sponge sleeve is nested on the outer surface of the insertion block. A microphone is embedded in the outer surface of one of the housing shells.

[0008] Furthermore, the arc-shaped rack has a fixed internal connection with a ribbon cable.

[0009] Furthermore, the outer surface of the arc-shaped rack is nested with an adjustment mechanism, which includes a limiting rail, an adjustment frame, a limiting frame, and a spring. The limiting rail is nested with the outer surface of the adjustment frame, the adjustment frame is fixedly connected to the lower surface of the limiting rail, the upper surface of the adjustment frame is fixedly connected with a first protective frame, the limiting frame is fixedly connected to the upper surface of the limiting rail, and a locking block is slidably connected inside the limiting frame, with the spring placed on the upper surface of the locking block.

[0010] Furthermore, the adjustment frame has extension frames hinged at both ends, and a second protective frame is fixedly connected to the upper surface of the extension frames.

[0011] Furthermore, a connecting post is fixedly connected to the lower surface of the limiting frame, the snap-fit ​​block and the connecting post are slidably connected, and a threaded sleeve is threadedly connected to the outer surface of the snap-fit ​​block.

[0012] Furthermore, one end of the spring contacts the snap-fit ​​block, and the other end of the spring contacts the connecting post.

[0013] Furthermore, a connecting lug is fixedly connected to the inner side of the middle frame, and a screw is threadedly connected to the upper surface of the connecting lug.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. When protecting the head beam and housing mechanism, the outer surface of the middle frame is integrally injection molded with an outwardly protruding frame to protect the edge of the housing. The adjustment frame works with the first protective frame to protect the head beam, and the second protective frame increases the protection range of the head beam, so as to prevent the head beam and housing from directly contacting the ground and causing damage to the head beam and housing when the device falls.

[0016] 2. Pull the two head beams outward to allow the arc-shaped rack and the locking block to slide relative to each other, thereby adjusting the length between the two head beams. Then, under the elastic force of the spring, the locking block slides down along the limiting frame, causing the locking block and the arc-shaped rack to engage, thus fixing the head beams and making the device suitable for different users. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the head beam structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the adjustment mechanism structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the shell mechanism of this utility model.

[0021] In the diagram: 1. Headband; 101. Arc-shaped rack; 102. Cable; 2. Housing mechanism; 201. Middle frame; 202. Insertion block; 203. Connecting ear; 204. Sponge sleeve; 205. Receiving shell; 3. Microphone; 4. Adjustment mechanism; 401. Adjustment frame; 402. First protective frame; 403. Limiting rail; 404. Limiting frame; 405. Snap-fit ​​block; 406. Spring; 407. Threaded sleeve; 408. Connecting column; 5. Extension frame; 501. Second protective frame. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 In this embodiment of the utility model, a head-mounted voice broadcasting device includes two headbands 1, and an arc-shaped rack 101 is fixedly connected to the adjacent surfaces of the two headbands 1.

[0024] The other end of the headband 1 is provided with a housing mechanism 2 for accommodating the circuit control board and the speaker. The housing mechanism 2 includes a housing shell 205, a middle frame 201 and an insertion block 202. The housing shell 205 is fixedly connected to one end of the headband 1 and is used to accommodate the circuit control board and the speaker. The middle frame 201 is detachably connected to the outer surface of the housing shell 205. The insertion block 202 is fixedly connected to the outer surface of the middle frame 201. A sponge sleeve 204 is nested on the outer surface of the insertion block 202. A microphone 3 is embedded on the outer surface of one of the housing shells 205.

[0025] Specifically, when inspecting the internal components of the housing mechanism 2, firstly, pull out the sponge sleeve 204 along the insertion block 202, and then rotate the screw on the connecting ear 203 to separate the middle frame 201 and the housing 205, which facilitates the later inspection of the components inside the housing 205.

[0026] Example 1

[0027] like Figure 1-4As shown, a cable 102 is fixedly connected inside the arc-shaped rack 101, and an adjustment mechanism 4 is nested on the outer surface of the arc-shaped rack 101. The adjustment mechanism 4 includes a limiting rail 403, an adjustment frame 401, a limiting frame 404, and a spring 406. The limiting rail 403 is nested on the outer surface of the adjustment frame 401, and the adjustment frame 401 is fixedly connected to the lower surface of the limiting rail 403. A first protective frame 402 is fixedly connected to the upper surface of the adjustment frame 401, and the limiting frame 404 is fixedly connected to the upper surface of the limiting rail 403. Extension frames 5 are hinged to both ends of the adjustment frame 401, and a second protective frame 501 is fixedly connected to the upper surface of the extension frame 5.

[0028] In this embodiment, a ribbon cable 102 is fixedly connected inside the arc-shaped rack 101. This connection method ensures that the ribbon cable 102 can stably transmit signals or power during the movement of the arc-shaped rack. When protecting the head beam 1 and the housing mechanism 2, the outer surface of the middle frame 201 is integrally injection molded with a protruding frame to protect the edge of the housing 205. The adjustment frame 401 works with the first protective frame 402 to protect the head beam 1, and the second protective frame 501 increases the protection range of the head beam 1. Through the combined action of the protruding frame integrally injection molded on the outer surface of the middle frame 201, the adjustment frame 401, the first protective frame 402, and the second protective frame 501, the head beam 1 and the housing 205 are protected, effectively avoiding damage caused by falls or other reasons.

[0029] Example 2

[0030] Based on Embodiment 1, in order to overcome the problem that it is inconvenient to adjust the length of the head beam 1 in Embodiment 1.

[0031] like Figure 1-4 As shown, a snap-fit ​​block 405 is slidably connected inside the limiting frame 404, and a spring 406 is placed on the upper surface of the snap-fit ​​block 405. A connecting post 408 is fixedly connected to the lower surface of the limiting frame 404. The snap-fit ​​block 405 and the connecting post 408 are slidably connected. A threaded sleeve 407 is threadedly connected to the outer surface of the snap-fit ​​block 405. One end of the spring 406 contacts the snap-fit ​​block 405, and the other end of the spring 406 contacts the connecting post 408. A connecting ear 203 is fixedly connected to the inner side of the middle frame 201, and a screw is threadedly connected to the upper surface of the connecting ear 203.

[0032] In this embodiment, pulling the two head beams 1 outward causes the arc-shaped rack 101 and the locking block 405 to slide relative to each other, thereby adjusting the length between the two head beams 1. Subsequently, the locking block 405 is slidably connected inside the limiting frame 404. This sliding connection allows the locking block 405 to move up and down within the limiting frame 404. Under the elastic force of the spring 406, the locking block 405 slides down along the limiting frame 404, causing the locking block 405 and the arc-shaped rack 101 to engage, thereby fixing the head beam 1 and making the device suitable for different users.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A head-mounted voice broadcasting device, comprising two headbands (1), wherein an arc-shaped rack (101) is fixedly connected to the adjacent surfaces of the two headbands (1); Its features are, The other end of the head beam (1) is provided with a housing mechanism (2) for accommodating the circuit control board and the speaker. The housing mechanism (2) includes: The housing (205) is fixedly connected to one end of the head beam (1). The housing (205) is used to house the circuit control board and the speaker. The middle frame (201) is detachably connected to the outer surface of the housing (205); An insert block (202) is fixedly connected to the outer surface of the middle frame (201), and a sponge sleeve (204) is nested on the outer surface of the insert block (202); A microphone (3) is embedded in the outer surface of one of the housings (205).

2. The head-mounted voice broadcasting device according to claim 1, characterized in that, The arc-shaped rack (101) is internally fixedly connected with a ribbon cable (102).

3. The head-mounted voice broadcasting device according to claim 1 or 2, characterized in that, An adjustment mechanism (4) is nested on the outer surface of the arc-shaped rack (101), the adjustment mechanism (4) comprising: The limiting rail (403) is nested and connected to the outer surface of the adjusting frame (401); An adjustment frame (401) is fixedly connected to the lower surface of the limiting rail (403), and a first protective frame (402) is fixedly connected to the upper surface of the adjustment frame (401). A limiting frame (404) is fixedly connected to the upper surface of the limiting rail (403), and a snap-fit ​​block (405) is slidably connected inside the limiting frame (404); A spring (406) is placed on the upper surface of the snap-fit ​​block (405).

4. The head-mounted voice broadcasting device according to claim 3, characterized in that, The two ends of the adjustment frame (401) are hinged with extension frames (5), and the upper surface of the extension frame (5) is fixedly connected with a second protective frame (501).

5. The head-mounted voice broadcasting device according to claim 3, characterized in that, The lower surface of the limiting frame (404) is fixedly connected to a connecting post (408), the snap block (405) and the connecting post (408) are slidably connected, and the outer surface of the snap block (405) is threadedly connected to a threaded sleeve (407).

6. The head-mounted voice broadcasting device according to claim 5, characterized in that, One end of the spring (406) is in contact with the snap-fit ​​block (405), and the other end of the spring (406) is in contact with the connecting post (408).

7. The head-mounted voice broadcasting device according to claim 1, characterized in that, A connecting ear (203) is fixedly connected to the inner side of the middle frame (201), and a screw is threaded onto the upper surface of the connecting ear (203).

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