Paster type buzzer

Abstract

The utility model relates to a surface-mounted buzzer, which comprises a shell (10) and a buzzer body (11), a rotating shaft (22); a gear (23); a ring gear (24); the upper portion of the rotating shaft (22) is provided with an external thread, and the cover plate (25) is provided with an internal thread matched with the external thread. A buzzer body (11) is installed in a shell (10), a pin (13) and an electrode slice (12) are enabled to correspondingly contact for electric conduction, an inner gear ring (24) is rotated to enable a plurality of gears (23) and a rotating shaft (22) to rotate in the same direction, and external threads on the upper portion of the rotating shaft (22) are matched with internal threads on a cover plate (25) to drive the cover plate (25) to move to be in contact with the buzzer body (11) so as to fix the cover plate (25) in the shell (10). When the buzzer body (11) needs to be detached for maintenance and replacement, the buzzer body (11) can be separated from the shell (10) only by reversely rotating the inner gear ring (24), so that use waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of buzzers, in particular to a patch type buzzer. Background Art

[0002] The SMD buzzer is an electronic sounder with an integrated structure, powered by DC voltage. It is widely used as a sound-generating device in electronic products such as computers, printers, copiers, alarms, electronic toys, automotive electronic equipment, telephones, timers, etc., and serves as an early warning prompt. When in use, the buzzer is often installed on the shell by welding, and then the shell is fixed to the wall or equipment by bolts. In the subsequent use process, if the buzzer body fails or is damaged, the buzzer body needs to be removed from the wall or equipment for maintenance and replacement. However, due to the welding fixation method, the buzzer body can only be replaced together with the shell, resulting in waste of use. Utility Model Content

[0003] The technical problem to be solved by the utility model is that when the existing buzzer body fails or is damaged, the buzzer body needs to be disassembled from the wall or equipment for maintenance and replacement. However, due to the welding fixing method, the buzzer body can only be replaced together with the shell, resulting in waste of use.

[0004] In order to solve the above problems, the utility model provides a patch type buzzer, including a shell with an opening on the top and a buzzer body, an electrode sheet is provided at the lower part of the shell, and a pin corresponding to the electrode sheet and in contact with electrical conduction is provided at the bottom of the buzzer body. An annular groove is provided on the outer surface of the shell, and a plurality of rotating shafts are provided in the annular groove for uniform circumferential rotation. The rotating shafts are fixed to gears, and the gears are meshed with an inner gear ring, and the inner gear ring is sleeved in the annular groove; an external thread is provided on the upper part of the rotating shaft, and an internal thread matching the external thread is provided on the cover plate, and the cover plate is used to fix the buzzer body in the shell.

[0005] The patch type buzzer provided by the utility model also has the following technical features:

[0006] An annular guide groove is provided in the annular groove, and a guide ring which is slidably matched with the annular guide groove is fixed on the end surface of the inner gear ring.

[0007] The outer surface of the annular groove is provided with anti-slip grooves.

[0008] The outer surface of the annular groove protrudes from the outer surface of the housing.

[0009] A plurality of connection blocks are evenly fixed on the outer edge of the cover plate in the circumferential direction. The connection blocks are provided with internal threads which match with the external threads on the upper part of the rotating shaft.

[0010] The lower surface of the cover plate is provided with a groove, and the bottom surface of the groove can contact the top of the buzzer body.

[0011] A positioning pin is eccentrically fixed at the bottom of the buzzer body, and a positioning groove is correspondingly provided inside the shell.

[0012] The electrode sheet is formed by bending two spring sheets, and the pin comprises two contact surfaces, a vertical contact surface and a horizontal contact surface, which are respectively in contact with the two spring sheets for electrical conduction.

[0013] A plurality of mounting seats are fixed on the shell for mounting the shell and the buzzer body on a wall or equipment; a conductive sheet is fixed on the bottom of the shell, and the conductive sheet is electrically connected to the electrode sheet.

[0014] The utility model has the following beneficial effects: the buzzer body is installed in the shell, the pins are in contact with the electrode sheets to conduct electricity, the inner gear ring is rotated to make the multiple gears and the rotating shaft rotate in the same direction, and the outer thread on the upper part of the rotating shaft cooperates with the inner thread on the cover plate to drive the cover plate to move to contact the buzzer body to fix it in the shell; when the buzzer body needs to be disassembled for maintenance and replacement, the buzzer body can be separated from the shell by only rotating the inner gear ring in the opposite direction, thereby avoiding waste of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a partial cross-sectional view of the axonometric drawing of the utility model;

[0016] Figure 2 for Figure 1 A partial enlarged view of

[0017] Figure 3 It is a partial exploded view of the utility model. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0019] like Figures 1 to 3 As shown, the patch type buzzer of the utility model comprises a shell 10 with an opening on the top, a buzzer body 11, an electrode sheet 12 is arranged at the lower part inside the shell 10, and a pin 13 corresponding to the electrode sheet 12 and in contact with the bottom of the buzzer body 11 is arranged, and a ring groove 21 is provided on the outer surface of the shell 10, and a plurality of rotating shafts 22 are arranged in the ring groove 21 so as to rotate evenly in the circumferential direction, and the rotating shaft 22 is fixed with a gear 23, and the gear 23 is meshed with an inner gear ring 24, and the inner gear ring 24 is sleeved in the ring groove 21; an external thread is provided on the upper part of the rotating shaft 22, and an internal thread matching the external thread is provided on the cover plate 25, and the cover plate 25 is used to fix the buzzer body 11 in the shell 10.

[0020] The utility model installs the buzzer body 11 in the shell 10, so that the pins 13 and the electrode sheets 12 are in contact with each other for electrical conduction, and the inner gear ring 24 is rotated to make the multiple gears 23 and the rotating shaft 22 rotate in the same direction, and the outer thread on the upper part of the rotating shaft 22 cooperates with the inner thread on the cover plate 25 to drive the cover plate 25 to move to contact the buzzer body 11 to fix it in the shell 10. When the buzzer body 11 needs to be disassembled for maintenance and replacement, the buzzer body 11 can be separated from the shell 10 by only rotating the inner gear ring 24 in the opposite direction, thereby avoiding waste of use.

[0021] The cover plate 25 is provided with a plurality of sound-transmitting holes 16 ; of course, the cover plate 25 may also be directly arranged in a ring shape, that is, a through hole is provided in the middle for sound transmission.

[0022] The structure and working mode of the buzzer body 11 are prior art and will not be described in detail here.

[0023] Preferably, an annular guide groove 26 is defined in the annular groove 21 , and a guide ring 27 slidably engaged with the annular guide groove 26 is fixed on the end surface of the inner gear ring 24 .

[0024] The annular guide groove 26 is formed on the upper and lower end surfaces of the annular groove 21 , and the guide ring 27 is correspondingly fixed on the upper and lower end surfaces of the inner gear ring 24 to achieve stable sliding of the inner gear ring 24 along the annular groove 21 .

[0025] Preferably, the outer surface of the annular groove 21 is provided with anti-slip grooves.

[0026] Preferably, the outer surface of the annular groove 21 protrudes from the outer surface of the housing 10 .

[0027] Preferably, a plurality of connection blocks 28 are evenly fixed on the outer edge of the cover plate 25 in the circumferential direction. The connection blocks 28 are provided with internal threads that match with the external threads on the upper portion of the rotating shaft 22 .

[0028] Preferably, a groove 31 is formed on the lower surface of the cover plate 25 , and the bottom surface of the groove 31 can contact the top of the buzzer body 11 .

[0029] The diameter of the groove 31 is greater than the diameter of the buzzer body 11 .

[0030] Preferably, a positioning pin 32 is eccentrically fixed at the bottom of the buzzer body 11 , and a positioning groove 33 is correspondingly provided inside the housing 10 .

[0031] The utility model realizes the marking function of the positive and negative pins 13 of the buzzer body 11 through the above arrangement, so as to avoid wrong connection during installation.

[0032] Of course, positive and negative symbols may also be marked on the two pins 13 , and positive and negative symbols may be marked on the electrode sheet 12 accordingly.

[0033] Preferably, the electrode sheet 12 is formed by bending two spring sheets, and the pin 13 includes two contact surfaces, a vertical contact surface and a horizontal contact surface, and is in contact with the two spring sheets for electrical conduction respectively.

[0034] The utility model increases the contact area between the electrode sheet 12 and the pin 13 through the above arrangement, thereby avoiding the occurrence of poor contact.

[0035] Preferably, a plurality of mounting seats 14 are fixed on the housing 10 for mounting the housing 10 and the buzzer body 11 on a wall or equipment; a conductive sheet 15 is fixed on the bottom of the housing 10 , and the conductive sheet 15 is electrically connected to the electrode sheet 12 .

[0036] The conductive sheet 15 and the electrode sheet 12 can be electrically connected via wires, that is, the wires are arranged inside and outside the housing 10 and are respectively connected to the conductive sheet 15 and the electrode sheet 12 .

[0037] The working principle of the utility model is as follows:

[0038] When installing the buzzer body 11, install the buzzer body 11 in the housing 10, align the positioning pin 32 at the bottom of the buzzer body 11 with the positioning groove 33 in the housing 10, and make the pin 13 and the electrode sheet 12 contact and conduct electricity accordingly; match and connect the internal thread on the connecting block 28 with the external thread on the upper part of the rotating shaft 22, rotate the inner gear ring 24, make the multiple gears 23 and the rotating shaft 22 rotate in the same direction, drive the cover plate 25 to move, until the bottom surface of the groove 31 on the lower surface of the cover plate 25 contacts the top of the buzzer body 11, so as to fix it in the housing 10; then connect the housing 10 with the buzzer body 11 to the wall or equipment through the mounting seat 14 at the bottom thereof, and power the buzzer body 11 through the conductive sheet 15;

[0039] When the buzzer body 11 needs to be disassembled for maintenance and replacement, it is only necessary to rotate the inner gear ring 24 in the opposite direction to cause the multiple gears 23 and the rotating shaft 22 to rotate in the opposite direction at the same time, driving the cover plate 25 to move until it is separated from the rotating shaft 22. After removing the cover plate 25, the buzzer body 11 can be separated from the shell 10 to avoid waste of use.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A patch type buzzer, comprising a housing (10) with an opening at the top, a buzzer body (11), an electrode sheet (12) being provided at the lower part of the housing (10), and a pin (13) being provided at the bottom of the buzzer body (11) for contacting and conducting with the electrode sheet (12), characterized in that: An annular groove (21) is provided on the outer surface of the housing (10), and a plurality of rotating shafts (22) are provided in the annular groove (21) so as to rotate evenly in the circumferential direction. The rotating shafts (22) are fixed to the gears (23), the gears (23) are meshed with the inner gear ring (24), and the inner gear ring (24) is sleeved in the annular groove (21); an external thread is provided on the upper part of the rotating shaft (22), and an internal thread matching the external thread is provided on the cover plate (25), and the cover plate (25) is used to fix the buzzer body (11) in the housing (10).

2. The chip buzzer according to claim 1, characterized in that: An annular guide groove (26) is provided in the annular groove (21), and a guide ring (27) is fixed on the end surface of the inner gear ring (24) and is slidably matched with the annular guide groove (26).

3. The chip buzzer according to claim 2, characterized in that: The outer surface of the annular groove (21) is provided with anti-slip grooves.

4. The chip buzzer according to claim 3, characterized in that: The outer surface of the annular groove (21) protrudes from the outer surface of the housing (10).

5. The chip buzzer according to claim 1, characterized in that: A plurality of connection blocks (28) are evenly fixed to the outer edge of the cover plate (25) in the circumferential direction. The connection blocks (28) are provided with internal threads that match the external threads on the upper portion of the rotating shaft (22).

6. The chip buzzer according to claim 1, characterized in that: The lower surface of the cover plate (25) is provided with a groove (31), and the bottom surface of the groove (31) can contact the top of the buzzer body (11).

7. The chip buzzer according to claim 1, characterized in that: A positioning pin (32) is eccentrically fixed to the bottom of the buzzer body (11), and a corresponding positioning groove (33) is provided inside the housing (10).

8. The chip buzzer according to claim 1, characterized in that: The electrode sheet (12) is formed by bending two spring sheets, and the pin (13) comprises two contact surfaces, a vertical contact surface and a horizontal contact surface, and is respectively in contact with the two spring sheets for electrical conduction.

9. The chip buzzer according to claim 1, characterized in that: A plurality of mounting seats (14) are fixed on the housing (10) and are used to mount the housing (10) and the buzzer body (11) on a wall or equipment; a conductive sheet (15) is fixed on the bottom of the housing (10), and the conductive sheet (15) is electrically connected to the electrode sheet (12).

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