A knob card type explanation device
The design of the knob-type card-insertion explanation device solves the problems of large size, difficulty in volume adjustment, and inability to personalize playback of explanation devices in exhibition halls. It achieves portability, precise volume adjustment, and personalized content selection, thus improving the visitor experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN HENGDA WENBO TECH CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-07
Smart Images

Figure CN224472172U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of explanation device technology, specifically a knob-type card-insertion explanation device. Background Technology
[0002] With the increasing demand for cultural dissemination, exhibition halls have become important venues for the public to acquire knowledge, and the user experience of the interpretive equipment within these halls directly impacts visitors' overall experience. However, the interpretive equipment currently provided by exhibition halls suffers from numerous shortcomings, severely hindering the improvement of the visitor experience.
[0003] In practice, existing exhibition hall interpretive devices are generally large in size and not sophisticated in design. Visitors not only find them inconvenient to move around in, but may also experience discomfort, especially during long visits, when the burden of carrying them becomes more pronounced.
[0004] Regarding volume adjustment, most audio guide devices are only equipped with simple knobs or buttons. In the noisy and fluctuating environment of an exhibition hall, visitors find it difficult to quickly adjust the volume to a suitable level. They may miss key information due to the low volume or disturb other visitors due to the high volume. Furthermore, the content played on existing audio guide devices is usually in a preset, fixed order, failing to meet the personalized needs of visitors. When visitors are interested in certain exhibits and want to repeat related explanations or skip uninteresting content, they cannot choose what to listen to, greatly reducing the autonomy and enjoyment of the visit and failing to provide a high-quality, immersive exhibition experience. Utility Model Content
[0005] The purpose of this invention is to provide a knob-type card-insertion explanation device to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a knob-type card insert explanation device, comprising:
[0007] A housing 1, wherein a horn and a knob 1 are provided on the housing 1, and the knob 1 is used to adjust the horn;
[0008] The second outer casing is equipped with a knob for selecting the information to be played.
[0009] A lifting ring, provided on the outer casing, is used to hook the device.
[0010] An inlet / outlet is located between the first outer casing and the second outer casing, and is used to accommodate the insert card.
[0011] Preferably, the first housing is further provided with a button for adjusting the mode, and the first housing is provided with a mounting hole for installing a connector to connect the second housing.
[0012] Preferably, the outer casing is further provided with a connecting groove, in which a plug rod is provided for connecting with the lifting ring.
[0013] Preferably, the second outer casing is provided with a connecting tube, which is used to align with the mounting hole to cooperate with the connector.
[0014] Preferably, both the first and second outer shells are provided with a support plate, the first outer shell is provided with a snap-fit plate, and the second outer shell is provided with a snap-fit plate, both of which snap-fit plate one and snap-fit plate two snap-fit onto the support plate.
[0015] Preferably, the bottom of the second knob is provided with a turntable, the turntable is connected to the support plate, and the support plate is also provided with a limiting plate for limiting and engaging the second knob.
[0016] Preferably, the limiting plate is provided with a connecting rod, the connecting rod is sleeved with a return spring, and the limiting plate is also provided with a locking rod for locking the return spring.
[0017] Preferably, the turntable has at least two semi-cylinders on its outer side, and the limiting plate and the turntable have a locking block on their adjacent sides.
[0018] Preferably, a card is inserted into the inlet / outlet, and the card is equipped with a chip.
[0019] Compared with existing technologies, the advantages of this utility model are as follows: In terms of portability, the knob-type card-insertion guide device, through its hanging ring structure, allows visitors to easily hook the device onto their neck or backpack, avoiding the inconvenience of holding it and greatly reducing the burden of carrying it during long visits. The outer shells one and two utilize a connection method combining mounting holes and connecting pipes, along with a snap-fit structure between the snap-fit plate and the support plate, making the overall structure compact, stable, and small in size, easy for visitors to carry. Regarding volume control, the knob one provides visitors with an intuitive and convenient way to adjust the volume. Compared to traditional button adjustments, it allows for more precise and faster adjustment of the speaker volume to a suitable level, meeting the different volume requirements in the complex environment of the exhibition hall. The design of the knob two, in conjunction with the turntable and limiting plate, allows visitors to easily select playback information by rotating the knob two. The semi-cylinder on the outer side of the turntable and the snap-fit block of the limiting plate work together to ensure the stability and accuracy of the selection operation, preventing accidental operation. Meanwhile, the card-insertion design allows for more flexible updates and replacements of the explanatory content. The chip on the card can store a wide variety of exhibit information, and visitors can change cards at any time according to their interests, choosing the content they are interested in to play, greatly enhancing the autonomy and enjoyment of the visit. In addition, the button function for adjusting modes further enriches the usage scenarios of the device, meeting the needs of visitors to switch modes under different visiting requirements, and bringing visitors a higher quality and more personalized immersive viewing experience. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the formal structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the rear structure of the present invention;
[0022] Figure 3 This is a schematic diagram of the structure of the present invention with the outer shell removed;
[0023] Figure 4 This is a schematic diagram of the structure of the present invention with the outer shell removed.
[0024] Figure 5 This is a schematic diagram of the structure of the outer shell of this utility model;
[0025] Figure 6 This is a schematic diagram of the structure of the outer shell of this utility model.
[0026] In the diagram: 1. Outer shell one; 11. Horn; 12. Knob one; 13. Button; 14. Mounting hole; 15. Snap-fit plate one; 16. Connecting groove; 161. Insert rod; 2. Outer shell two; 21. Knob two; 211. Turntable; 22. Connecting pipe; 23. Snap-fit plate two; 3. Insert clip; 4. Lifting ring; 5. Inlet / outlet; 7. Limiting plate; 71. Connecting rod; 72. Snap-fit rod; 73. Return spring. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.
[0028] Please see Figure 1-6 This utility model provides a technical solution: a knob-type card-insertion explanation device, designed to bring a more convenient and personalized visiting experience to exhibition hall visitors. The device mainly consists of a first outer shell 1, a second outer shell 2, a hanging ring 4, and an inlet / outlet 5, among other components. These components work together to achieve a variety of practical functions.
[0029] The outer casing 1 is made of high-strength, lightweight engineering plastic, offering excellent wear resistance and impact resistance. This effectively protects internal components while reducing overall weight for easy carrying. A high-fidelity speaker 11 is located on the front of the casing 1. This speaker 11 features a special acoustic design, delivering clear and loud sound quality, ensuring visitors can clearly hear the exhibit explanations even in noisy environments like exhibition halls. Next to the speaker 11 is a multi-functional knob 12, which not only allows for stepless adjustment of the speaker 11's volume but also turns the device on and off. Visitors can easily control the volume by rotating the knob 12; clockwise rotation increases the volume, counter-clockwise rotation decreases it, and pressing the knob turns the device on or off—the operation is simple and intuitive. In addition, the casing 1 also features a tactile feedback button 13, which is waterproof and dustproof for a long service life. Button 13 is used to select the device's output mode; visitors can freely switch between Bluetooth mode and narration mode by pressing button 13. In Bluetooth mode, the device can connect to smartphones and other smart devices, allowing visitors to play their favorite music or other audio content. In guided tour mode, it focuses on playing the exhibit information from the insert card 3. The outer casing 1 has four rectangular mounting holes 14 with threads on their inner walls, used to securely connect the outer casing 1, the second outer casing 2, and the support plate 6 with high-strength bolts, ensuring the overall structural reliability of the device.
[0030] The outer casing 2 is made of the same material as the outer casing 1, ensuring structural strength while maintaining a unified aesthetic style. The surface of outer casing 2 features a comfortable-to-operate knob 21 with anti-slip textured edges for easy rotation. Knob 21 is used to select playback information; visitors can quickly switch between different audio explanations of exhibits stored on the card 3 by rotating it. A turntable 211 is fixedly connected to the bottom of knob 21, and is connected to the support plate 6 via a precision bearing, ensuring smooth and stable rotation. A limit plate 7, made of elastic metal, is installed on the support plate 6 to limit and engage knob 21. A connecting rod 71 is mounted on the limit plate 7, and a return spring 73 is sleeved on the outside of the connecting rod 71. The return spring 73 provides a restoring force, allowing knob 21 to automatically return to its initial position after each rotation for easy operation next time. The limiting plate 7 is also equipped with a locking rod 72, which engages with the end of the return spring 73 to fix and support the spring. Ten semi-cylinders are evenly distributed on the outer side of the turntable 211. The limiting plate 7, on the side closest to the turntable 211, has locking blocks that match the semi-cylinders. When the knob 21 rotates, the locking blocks slide between the semi-cylinders. At each specific position, the locking block engages with the semi-cylinder, achieving precise positioning and ensuring that the user accurately selects the desired playback information. Furthermore, the outer shell 2 has a connecting pipe 22 corresponding to the mounting hole 14 of the outer shell 1. The connecting pipe 22 is hollow and has internal threads, which mate with the mounting hole 14, and the two are securely connected by bolts. Simultaneously, the locking plate 15 on the outer shell 1 and the locking plate 23 on the outer shell 2 both adopt an L-shaped structure, locking the support plate 6 from both top and bottom directions, further enhancing the stability of the internal structure of the device and effectively preventing the support plate 6 from shaking or shifting during use.
[0031] The hanging ring 4 is made of stainless steel, which has high strength and corrosion resistance, and is located on the top of the outer shell 1. The outer shell 1 also has a connecting groove 16, which is U-shaped and contains a rotatable plug rod 161. The plug rod 161 is firmly connected to the hanging ring 4 by welding. Visitors can easily hook the device around their neck or onto their backpack through the hanging ring 4, freeing their hands and allowing them to move freely during the visit.
[0032] The entrance / exit 5 is located at the connection between outer casing 1 and outer casing 2. It adopts a plug-in design with a guide bevel at the edge of the opening to facilitate the insertion and removal of the card 3. The card 3 is a micro memory card with gold finger contacts on its surface for data transmission with the internal circuitry of the device. The card 3 integrates a high-performance chip that can store a large amount of audio, images, and other information about the exhibits. Visitors can change the card 3 at any time according to their needs to obtain detailed information about different exhibits, greatly enhancing the autonomy and enjoyment of the visit.
[0033] When using the rotary card-type audio guide device, the exhibit explanations and other information in the card 3 are stored via a chip and connected to the device's internal circuitry. Once the device is activated via rotary knob 12, visitors can select a playback mode according to their needs, switching between Bluetooth and audio guide modes via button 13. In audio guide mode, rotating rotary knob 21 on outer shell 2 causes the semi-cylinder on the outer side of its bottom turntable 211 to engage with the locking block of the limiting plate 7, enabling precise selection of playback information. The selected information is processed and played through the speaker 11 on outer shell 1, and visitors can adjust the volume at any time via rotary knob 12. In Bluetooth mode, the device can connect to external smart devices to play other audio content. The entire device is easily portable via the hanging ring 4. The structural design of outer shell 1 and outer shell 2, including mounting holes 14, connecting pipes 22, and locking plates 15 and 23, ensures the stability and reliability of the device.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A knob-type card-insertion explanation device, characterized in that, include: The outer casing (1) is provided with a horn (11) and a knob (12), the knob (12) being used to adjust the horn (11); The outer casing 2 (2) is provided with a knob 2 (21) for selecting the information to be played; A lifting ring (4) is provided on the outer shell (1) for hooking the device; The inlet / outlet (5) is located between the outer shell one (1) and the outer shell two (2) and is used to accommodate the insert card (3).
2. The rotary card insert type explanation device according to claim 1, characterized in that: The outer casing (1) is also provided with a button (13) for adjusting the mode. The outer casing (1) is provided with a mounting hole (14) for installing a connector to connect the outer casing (2).
3. A knob-type card insert explanation device according to claim 1 or 2, characterized in that: The outer casing (1) is also provided with a connecting groove (16), and a plug rod (161) is provided in the connecting groove (16) for connecting with the lifting ring (4).
4. The rotary card insert type explanation device according to claim 2, characterized in that: The outer casing (2) is provided with a connecting pipe (22), which is used to mate with the mounting hole (14) to form the connector.
5. A knob-type card insert explanation device according to claim 1 or 2, characterized in that: The first outer shell (1) and the second outer shell (2) are provided with a support plate (6). The first outer shell (1) is provided with a snap-fit plate (15), and the second outer shell (2) is provided with a snap-fit plate (23). Both the first snap-fit plate (15) and the second snap-fit plate (23) snap-fit onto the support plate (6).
6. The rotary card insert type explanation device according to claim 5, characterized in that: The bottom of the second knob (21) is provided with a turntable (211), the turntable (211) is connected to the support plate (6), and the support plate (6) is also provided with a limiting plate (7) for limiting and locking the second knob (21).
7. A knob-type card-insertion explanation device according to claim 6, characterized in that: The limiting plate (7) is provided with a connecting rod (71), and a reset spring (73) is sleeved on the connecting rod (71). The limiting plate (7) is also provided with a snap-fit rod (72) for snapping the reset spring (73).
8. A knob-type card-insertion explanation device according to claim 6, characterized in that: At least two semi-cylinders are provided on the outer side of the turntable (211), and a snap-fit block is provided on the side of the limiting plate (7) and the turntable (211) that are close to each other.
9. A knob-type card-insertion explanation device according to claim 1, characterized in that: A card (3) is inserted into the inlet / outlet (5), and a chip is provided on the card (3).