Electromagnetic buzzer with anti-drop pins

Abstract

The electromagnetic buzzer comprises a mounting plate and a pin, the pin comprises a pin main body and an anti-falling part, the mounting plate is provided with an anti-falling groove corresponding to the anti-falling part, the anti-falling groove is internally provided with a pin hole, the pin main body passes through the anti-falling groove and the pin hole in sequence from top to bottom, and the pin main body passes through the pin hole. The pin body can drive the anti-falling part to enter the anti-falling groove from top to bottom, the vertical projection of the anti-falling part and the pin hole are at least partially staggered, the anti-falling part is matched with the anti-falling groove so that the connection stability of the pin and the mounting plate can be improved, the pin is effectively prevented from falling off from the mounting plate accidentally in the use process, an additional riveting process is not needed, and the production efficiency is improved. The production efficiency is improved, and the production and processing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of buzzers, in particular to an electromagnetic buzzer with anti-pin-loosening function. Background Art

[0002] Electromagnetic buzzer is a common electronic component, widely used in occasions such as alarm, reminder and indication.

[0003] The electromagnetic buzzer includes a mounting plate and pins. The pins are generally connected and fixed to the mounting plate by plugging or riveting. The plugging method has insufficient connection strength between the pins and the mounting plate. When the operating temperature of the buzzer is high, the pins are easily loosened from the mounting plate, affecting the normal use of the buzzer. The riveting method requires an additional riveting process after the pins are plugged into the mounting plate, which is not conducive to improving production efficiency and increases production and processing costs.

[0004] Therefore, further improvement is needed. Utility Model Content

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an electromagnetic buzzer with pin-loosening prevention, thereby simplifying the assembly structure of the pins and the mounting plate and preventing the pins from accidentally falling off the mounting plate.

[0006] The purpose of this utility model is achieved in this way:

[0007] An electromagnetic buzzer with pin anti-slipping comprises a mounting plate and a pin, wherein the pin comprises a pin body and an anti-slipping portion, an anti-slipping groove corresponding to the anti-slipping portion is provided on the mounting plate, a pin hole is provided in the anti-slipping groove, the pin body passes through the anti-slipping groove and the pin hole in sequence from top to bottom, the pin body can drive the anti-slipping portion to enter the anti-slipping groove from top to bottom, and the vertical projection of the anti-slipping portion is at least partially offset from the pin hole.

[0008] As a specific solution, the vertical projection of the anti-slip portion is U-shaped, and the outer side of the anti-slip portion is tightly fitted with the inner wall of the anti-slip groove.

[0009] As a specific solution, a glue-filling cavity capable of being filled with glue is formed between the inner side of the anti-slip portion and the anti-slip groove.

[0010] As a specific solution, a plurality of anti-slip teeth are distributed on the outer side of the anti-slip portion, and the anti-slip teeth are tightly matched with the inner wall of the anti-slip groove.

[0011] As a specific solution, a guiding slope is provided on the lower side of the anti-slip tooth, and the guiding slope is inclined from top to bottom toward the anti-slip portion.

[0012] As a specific solution, the foot body is provided with reinforcing ribs, which are arranged vertically, and the foot hole is provided with avoidance recesses corresponding to the reinforcing ribs.

[0013] As a specific solution, a coil group is provided on the upper side of the mounting plate, and the starting end and / or the ending end of the coil group is electrically connected to the foot body through direct contact.

[0014] As a specific solution, a wire avoidance groove is provided on the mounting plate, and the wire avoidance groove is open at the outer side of the mounting plate. The wire avoidance groove vertically penetrates the upper and lower sides of the mounting plate. The starting and end ends of the coil group respectively pass through the corresponding wire avoidance groove from top to bottom through the mounting plate and are in direct contact with the corresponding foot body for electrical connection.

[0015] The beneficial effects of the utility model are:

[0016] The anti-dropping portion and the anti-dropping groove cooperate to improve the connection stability between the pin and the mounting plate, effectively preventing the pin from accidentally falling off the mounting plate during use, and eliminating the need for an additional riveting process, thereby improving production efficiency and reducing production and processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A cross-sectional view of an embodiment of the present invention Figure 1 .

[0018] Figure 2 A cross-sectional view of an embodiment of the present invention Figure 2 .

[0019] Figure 3 It is an exploded schematic diagram of an embodiment of the present utility model.

[0020] Figure 4 It is a structural schematic diagram of an embodiment of the present utility model. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] See also Figures 1-4The electromagnetic buzzer with anti-dropping pins includes a mounting plate 1 and a pin 2. The pin 2 includes a pin body 21 and an anti-dropping portion 22. The mounting plate 1 is provided with an anti-dropping groove 11 corresponding to the anti-dropping portion 22. A pin hole 111 is provided in the anti-dropping groove 11. The pin body 21 passes through the anti-dropping groove 11 and the pin hole 111 from top to bottom. The pin body 21 can drive the anti-dropping portion 22 to enter the anti-dropping groove 11 from top to bottom. The vertical projection of the anti-dropping portion 22 is at least partially staggered with the pin hole 111. The anti-dropping portion 22 cooperates with the anti-dropping groove 11 to improve the connection stability between the pin 2 and the mounting plate 1, effectively preventing the pin 2 from accidentally falling off from the mounting plate 1 during use, and no additional riveting process is required, thereby improving production efficiency and reducing production and processing costs.

[0023] Furthermore, the vertical projection of the anti-slip portion 22 is U-shaped, and the outer side of the anti-slip portion 22 fits tightly against the inner wall of the anti-slip groove 11. The anti-slip groove 11 can limit the anti-slip portion 22 so that the anti-slip portion 22 will not shake in the anti-slip groove 11, thereby further improving the stability of the connection between the pin 2 and the mounting plate 1 and the installation accuracy of the two.

[0024] Furthermore, a glue-filling cavity capable of being filled with glue is formed between the inner side of the anti-slip portion 22 and the anti-slip groove 11 , and the stability of the connection between the pin 2 and the mounting plate 1 can be further improved by filling with glue.

[0025] Furthermore, a plurality of anti-slip teeth 221 are distributed on the outside of the anti-slip portion 22 , and the anti-slip teeth 221 are tightly matched with the inner wall of the anti-slip groove 11 , and the anti-slip teeth 221 can further strengthen the connection strength between the anti-slip portion 22 and the anti-slip groove 11 .

[0026] Furthermore, a guide slope 2211 is provided on the lower side of the anti-slip tooth 221, and the guide slope 2211 is inclined from top to bottom toward the anti-slip portion 22, so that the pin 2 can be inserted into the mounting plate 1 more smoothly from top to bottom, and the pin 2 cannot be detached from the mounting plate 1 in the reverse direction from bottom to top.

[0027] Furthermore, a reinforcing rib 211 is provided on the foot body 21, and the reinforcing rib 211 is arranged vertically. An avoidance recess 112 corresponding to the reinforcing rib 211 is provided on the foot hole 111, which improves the structural strength of the foot body 21 and makes the foot body 21 less likely to bend during use.

[0028] Furthermore, a coil group 3 is provided on the upper side of the mounting plate 1, and the starting end and / or the end of the coil group 3 are electrically connected to the foot body 21 through direct contact, thereby eliminating the welding process between the mounting plate 1, the coil group 3 and the pin 2, and improving production efficiency.

[0029] Furthermore, a wire avoidance groove 12 is provided on the mounting plate 1, and the wire avoidance groove 12 is open at the outer side of the mounting plate 1. The wire avoidance groove 12 vertically penetrates the upper and lower sides of the mounting plate 1. The starting end and the end end of the coil group 3 pass through the corresponding wire avoidance groove 12 from top to bottom through the mounting plate 1 and are in direct contact and electrically connected with the corresponding foot body 21, so that the coil group 3 can be more easily passed through the mounting plate 1 and connected and fixed to the foot body 21, and the coil group 3 is prevented from protruding from the side of the mounting plate 1 and affecting the later assembly.

[0030] The above embodiments are only preferred embodiments of the present invention, and other embodiments are possible. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all within the scope set by the claims of this application.

Claims

1. An electromagnetic buzzer with pin-off prevention, comprising a mounting plate (1) and pins (2), characterized in that: The pin (2) comprises a pin body (21) and an anti-slip portion (22); an anti-slip groove (11) corresponding to the anti-slip portion (22) is provided on the mounting plate (1); a pin hole (111) is provided in the anti-slip groove (11); the pin body (21) passes through the anti-slip groove (11) and the pin hole (111) in sequence from top to bottom; the pin body (21) can drive the anti-slip portion (22) to enter the anti-slip groove (11) from top to bottom; and a vertical projection of the anti-slip portion (22) is at least partially offset from the pin hole (111).

2. The electromagnetic buzzer with pin-off prevention function according to claim 1, characterized in that: The vertical projection of the anti-slip portion (22) is in a U-shape, and the outer side of the anti-slip portion (22) is tightly fitted with the inner wall of the anti-slip groove (11).

3. The electromagnetic buzzer with pin-off prevention function according to claim 2, characterized in that: A glue-filling cavity capable of being filled with glue is formed between the inner side of the anti-slip portion (22) and the anti-slip groove (11).

4. The electromagnetic buzzer with pin-off prevention function according to claim 1, characterized in that: A plurality of anti-slip teeth (221) are distributed on the outer side of the anti-slip portion (22), and the anti-slip teeth (221) are tightly matched with the inner wall of the anti-slip groove (11).

5. The electromagnetic buzzer with pin-off prevention function according to claim 4, characterized in that: A guiding inclined surface (2211) is provided on the lower side of the anti-slip tooth (221), and the guiding inclined surface (2211) is arranged to be inclined from top to bottom in a direction close to the anti-slip portion (22).

6. The electromagnetic buzzer with pin-off prevention function according to claim 1, characterized in that: The foot body (21) is provided with a reinforcing rib (211), the reinforcing rib (211) being arranged vertically, and the foot hole (111) is provided with an avoidance recess (112) corresponding to the reinforcing rib (211).

7. The electromagnetic buzzer for preventing pins from falling off according to any one of claims 1 to 6, characterized in that: A coil group (3) is provided on the upper side of the mounting plate (1), and the starting end and / or the ending end of the coil group (3) are electrically connected to the foot body (21) through direct contact.

8. The electromagnetic buzzer for preventing pin loss according to claim 7, characterized in that: The mounting plate (1) is provided with a wire avoidance groove (12), and the wire avoidance groove (12) is open at an outer position corresponding to the mounting plate (1). The wire avoidance groove (12) vertically penetrates the upper and lower sides of the mounting plate (1). The starting end and the end end of the coil group (3) respectively pass through the corresponding wire avoidance groove (12) from top to bottom through the mounting plate (1) and are in direct contact with the corresponding foot body (21) for electrical connection.

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