A buzzer with improved impact resistance

Abstract

The utility model relates to a kind of buzzer of effectively improving impact strength, including base, T-shaped core, magnetic ring, voice coil, vibrating reed and upper cover;Two corners of base are equipped with connecting pin;Base has cylindrical connecting portion, annular step portion is equipped in cylindrical connecting portion;The upper surface of base is close to corner position and is equipped with insertion slot, and the edge position of insertion slot in its left and right sides and rear end is vertically extended to form extension portion;Magnetic ring is bonded in the bottom of T-shaped core, and with T-shaped core share same axis;Vibrating reed is placed on the annular step portion in cylindrical connecting portion;The bottom corner position of upper cover is equipped with plug-in part;Upper cover is inserted in the insertion slot on base by plug-in part, and is bonded by glue;The bottom edge position of upper cover is bonded with the edge position of base.The utility model increases the area of gluing by gluing between the friction between increasing and base simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of buzzer technology, and in particular to a buzzer that effectively improves impact resistance. Background Technology

[0002] Buzzers are made of piezoelectric ceramic materials (such as lead zirconate titanate) or electromagnetic components. They produce sound by generating mechanical vibration through the application of alternating voltage or by generating voltage signals through mechanical force (piezoelectric effect). They are widely used in devices such as computers, printers, and alarms to emit prompts, alarm sounds, or timed reminders.

[0003] Currently, the top cover and base of a buzzer are connected by adhesive. Due to the limited contact area between the top cover and base in the existing structure, the impact resistance between the base and the top cover is not high, which limits the scope of application of the buzzer.

[0004] Therefore, there is a need to provide a buzzer that can effectively improve impact resistance in order to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a buzzer that effectively improves impact resistance. The newly designed top cover fits tightly with the base through an extended plug-in component, increasing friction with the base while also increasing the adhesive application area through a glue application method.

[0006] To achieve the above-mentioned utility model objectives, a buzzer with effectively improved impact resistance is provided, comprising a base, a T-shaped iron core, a magnetic ring, a voice coil, a vibrating plate, and a top cover;

[0007] The base has connection pins on its two corners;

[0008] The base has a cylindrical connecting part, and the cylindrical connecting part has an annular step part inside;

[0009] The upper surface of the base is provided with insertion slots near the corners, and the insertion slots extend vertically upwards at the edges on the left, right and rear sides to form extensions.

[0010] The T-shaped iron core is fixed to the bottom inner wall of the base;

[0011] The voice coil is fitted onto the T-shaped iron core, and its bottom is bonded to the T-shaped iron core. The two connecting wires of the voice coil are respectively connected to two connecting pins.

[0012] The magnetic ring is bonded to the bottom of the T-shaped iron core and shares the same axis with the T-shaped iron core;

[0013] The vibrating plate is placed on the annular stepped portion inside the cylindrical connecting part;

[0014] The top cover has a sound outlet on one side;

[0015] The bottom corner of the top cover is provided with a plug-in component, which is adapted to the plug-in slot;

[0016] The top cover is inserted into the insertion slot on the base via the plug-in component and is glued together; the bottom edge of the top cover is glued to the edge of the base.

[0017] Preferably, spare pins are provided on the other two corners of the base.

[0018] Preferably, the T-shaped iron core is fixed to the bottom inner wall of the base by injection molding.

[0019] Preferably, a circular counterweight is provided on the upper surface of the vibrating plate.

[0020] Preferably, a dustproof mesh is provided on the sound outlet.

[0021] Preferably, the inner wall of the extension has a curved surface structure.

[0022] Furthermore, curved protrusions are provided on the inner side walls of the top cover.

[0023] Furthermore, the top inner wall of the cover is vertically provided with several limiting protrusions.

[0024] Preferably, an adhesive inlet is provided at the top edge of the outer end of the insertion slot and at the middle of the bottom corner of the top cover.

[0025] Furthermore, the outer wall of the extension is provided with adhesive storage grooves symmetrically on both sides of the insertion groove.

[0026] This utility model provides a buzzer with significantly improved impact resistance, which has the following advantages compared to existing technologies:

[0027] (1) The top cover adopts a plug-in structure. The newly designed top cover fits tightly with the base through the extended plug-in component. While increasing the friction between the top cover and the base, the glue application area is increased by applying glue. Compared with the traditional model, the tension between the top and bottom covers is greatly increased, which can reach more than 50N, greatly improving the impact resistance of the product.

[0028] (2) The base and the iron core are bonded by injection molding, which overturns the traditional method of bonding the two parts with glue. This structure can avoid the unevenness of bonding strength and impact resistance caused by factors such as glue type, curing environment and bonding thickness during the traditional glue bonding process. At the same time, it avoids the restrictions of laws and regulations such as RoHS, HF and VOC on glue. Attached Figure Description

[0029] Figure 1 This is an exploded view of a buzzer that effectively improves impact resistance according to this embodiment;

[0030] Figure 2 This is a schematic diagram of the base structure in this embodiment;

[0031] Figure 3 This is a top view of the base in this embodiment;

[0032] Figure 4 This is a schematic diagram of the structure of the upper cover in this embodiment.

[0033] Figure 5 This is a schematic diagram of the structure of a buzzer that effectively improves impact resistance according to this embodiment;

[0034] Figure 6 This is a cross-sectional view of a buzzer that effectively improves impact resistance according to this embodiment. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] like Figure 1 and Figure 5 As shown, this utility model provides a buzzer that effectively improves impact resistance, comprising a base 1, a T-shaped iron core 2, a magnetic ring 3, a voice coil 4, a vibrating plate 5, and a top cover 6.

[0037] like Figure 2 As shown, the base 1 has connecting pins 7 on its two corners; the base 7 has a cylindrical connecting part 8, and the cylindrical connecting part 8 has an annular step part 9 inside; the upper surface of the base 1 has insertion grooves 10 near the corners, and the insertion grooves 10 extend vertically upwards at the edges on the left, right and rear sides to form extension parts 11.

[0038] In this embodiment, as Figure 3 As shown, spare pins 12 are also provided on the other two corners of the base 1, which serve both as a balancing function and as a backup, thereby improving the adaptability of the buzzer.

[0039] like Figure 2 As shown, the T-shaped iron core 2 is fixed to the bottom inner wall of the base 1. In this embodiment, the T-shaped iron core 2 is fixed to the bottom inner wall of the base 1 by injection molding; this method overturns the traditional method of bonding two components with glue. This structure can avoid the unevenness of bonding strength and impact resistance caused by factors such as glue type, curing environment, and bonding thickness during the traditional glue bonding process.

[0040] The voice coil 4 is sleeved on the T-shaped iron core, and its bottom is glued to the T-shaped iron core. The two connecting wires of the voice coil are respectively connected to two connecting pins to facilitate connection with an external power supply.

[0041] The magnetic ring 3 is bonded to the bottom of the T-shaped iron core 2 and shares the same axis with the T-shaped iron core 2.

[0042] The vibrating plate 5 is placed on the annular step portion 9 inside the cylindrical connecting portion 8; in this embodiment, a circular counterweight 13 is provided on the upper surface of the vibrating plate 5 to adjust the vibration frequency of the vibrating plate 5, thereby producing sound better.

[0043] like Figure 4 As shown, the upper cover 6 has a sound outlet 14 on one side. In this embodiment, the sound outlet 14 is provided with a dustproof mesh (not shown in the figure) to prevent dust. A plug-in component 15 is provided at the bottom corner of the upper cover 6. The plug-in component 15 is adapted to the plug-in groove 10. The upper cover 6 is inserted into the plug-in groove 10 on the base 1 through the plug-in component 15 and is bonded with adhesive. The bottom edge of the upper cover 6 is bonded to the edge of the base 1. With this configuration, the upper cover 1 fits tightly to the base 1 at the joint through the extended plug-in component 15. This increases the friction between the upper cover and the base 1 while also increasing the adhesive application area. Compared to the traditional upper and lower cover design, the tensile strength is greatly increased, reaching over 50N, significantly improving the product's impact resistance.

[0044] In this embodiment, the inner wall of the extension 11 is a curved structure 16, which serves to limit the position of the vibrating plate 5 in the horizontal direction.

[0045] Furthermore, in this embodiment, curved protrusions 17 are provided on the inner side walls of the upper cover 6, which, in conjunction with the curved structure 16 of the extension 11, provide better limiting of the vibrating plate 5 in the horizontal direction.

[0046] In this embodiment, a plurality of limiting protrusions 18 are vertically provided on the top inner wall of the upper cover 6, which can effectively limit the vibration plate 5 in the vertical direction.

[0047] In this embodiment, glue inlets 19 are provided at the top edge of the outer end of the insertion slot 10 and at the middle of the bottom corner of the upper cover 6 to facilitate the injection of glue by the staff.

[0048] In this embodiment, the outer wall of the extension 11 is symmetrically provided with glue storage grooves 20 on both sides of the insertion groove 10. This arrangement effectively prevents glue from flowing into the cylindrical connecting part 8 through the base 1 during the glue injection process, which would stick to other buzzer devices and prevent them from working properly.

[0049] like Figure 6 As shown, when current passes through the voice coil 4, the position of the vibrating plate 5 changes due to the change in magnetic energy, thus generating vibration and sound. The top cover adopts a plug-in structure. The newly designed top cover 6 is tightly fitted to the base 1 through the extended plug-in component 15. This increases the friction between the top cover and the base, and also increases the adhesive application area through glue application. Compared with the traditional model, the tensile force between the top and bottom covers is greatly increased, reaching more than 50N, which greatly improves the impact resistance of the product. The base 1 and the T-shaped iron core 2 are bonded by injection molding, which overturns the traditional method of bonding the two parts with glue. This structure can avoid the unevenness of bonding strength and impact resistance caused by factors such as glue type, curing environment, and bonding thickness in the traditional glue bonding process. At the same time, it avoids the restrictions of laws and regulations such as RoHS, HF, and VOC on glue.

[0050] The preferred embodiments of this utility model have been described in detail above, but this utility model is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this utility model, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A buzzer that effectively improves impact resistance, characterized in that, Includes a base, T-shaped iron core, magnetic ring, voice coil, diaphragm, and top cover; The base has connection pins on its two corners; The base has a cylindrical connecting part, and the cylindrical connecting part has an annular step part inside; The upper surface of the base is provided with insertion slots near the corners, and the insertion slots extend vertically upwards at the edges on the left, right and rear sides to form extensions. The T-shaped iron core is fixed to the bottom inner wall of the base; The voice coil is fitted onto the T-shaped iron core, and its bottom is bonded to the T-shaped iron core. The two connecting wires of the voice coil are respectively connected to two connecting pins. The magnetic ring is bonded to the bottom of the T-shaped iron core and shares the same axis with the T-shaped iron core; The vibrating plate is placed on the annular stepped portion inside the cylindrical connecting part; The top cover has a sound outlet on one side; The bottom corner of the top cover is provided with a plug-in component, which is adapted to the plug-in slot; The top cover is inserted into the insertion slot on the base via the plug-in component and is bonded with adhesive; the bottom edge of the top cover is bonded to the edge of the base.

2. A buzzer with effectively improved impact resistance as described in claim 1, characterized in that, Spare pins are also provided on the other two corners of the base.

3. A buzzer with effectively improved impact resistance as described in claim 1, characterized in that, The T-shaped iron core is fixed to the bottom inner wall of the base by injection molding.

4. A buzzer with effectively improved impact resistance as described in any one of claims 1 to 3, characterized in that, The upper surface of the vibrating plate is provided with a circular counterweight.

5. A buzzer with effectively improved impact resistance as described in claim 1, characterized in that, The sound outlet is equipped with a dustproof mesh.

6. A buzzer with effectively improved impact resistance as described in claim 1, characterized in that, The inner wall of the extension has a curved surface structure.

7. A buzzer with effectively improved impact resistance as described in claim 6, characterized in that, The inner side wall of the top cover is provided with curved protrusions.

8. A buzzer with effectively improved impact resistance as described in claim 7, characterized in that, The top inner wall of the cover is provided with several vertical limiting protrusions.

9. A buzzer with effectively improved impact resistance as described in claim 1, characterized in that, The top edge of the outer end of the insertion slot and the middle position of the bottom corner of the top cover are provided with glue inlet.

10. A buzzer with effectively improved impact resistance as described in claim 9, characterized in that, The outer wall of the extension is provided with adhesive storage grooves symmetrically on both sides of the insertion groove.

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