Vibration exciter for screen sounding

Abstract

The utility model discloses a vibration exciter for screen sounding, and particularly relates to the technical field of vibration exciters, the vibration exciter comprises a vibration exciter body for screen sounding, the bottom of the vibration exciter body is fixedly provided with a circular plate, the bottom of the circular plate is provided with a first circular hole, and a rubber pad is fixedly arranged in the first circular hole. A plurality of second round holes are formed in the bottom of the rubber pad, and a vibration reduction assembly is arranged in each second round hole. A circular plate is fixed to a screen frame, the top of a vibration exciter body makes contact with a screen, the vibration exciter body is powered on to generate vibration so that the screen can make a sound, circular blocks in a plurality of hollow pipes slide up and down due to vibration, lantern rings are driven to slide in annular grooves, and first compression springs are matched with first protruding blocks and first grooves for vibration reduction; the first protruding block and the first groove are connected in an inserted mode to increase the sliding resistance of the lantern ring, kinetic energy can be absorbed, then the vibration reduction effect of the vibration exciter body is improved, and it is avoided that vibration affects use of parts in the vibration exciter body.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration exciters, in particular to a vibration exciter used for screen sound generation. Background Art

[0002] In order to increase the screen-to-body ratio of electronic products such as mobile phones, removing the earpiece has become a development trend. In some solutions, a screen sound-generating device is used to replace the earpiece. The screen sound-generating device usually includes a screen body and an electromagnetic exciter disposed on the screen body. The electromagnetic exciter vibrates, thereby driving the screen body to vibrate to make a sound. The existing electromagnetic exciter usually includes a stator, a vibrator and a shrapnel. The stator includes a shell and a coil. The vibrator includes a permanent magnet and a mass block connected together. The vibrator is suspended in the cavity of the shell by a shrapnel, and the coil is fixed to the inner wall of the shell.

[0003] At present, in order to improve the driving force, speed and sensitivity of the vibrator in the exciter, the prior art publication number is CN208821081U for an electromagnetic exciter and a screen sound-generating device. The utility model includes a stator assembly, the stator assembly includes a shell and a coil, a cavity is formed inside the shell, the coil is arranged in the cavity, and the vibrator assembly is composed of a plurality of permanent magnets stacked together.

[0004] However, the above-mentioned prior art still has the following problems when used: when the exciter is installed on the screen, the vibration of the exciter is transmitted to the screen, and then transmitted from the screen to the exciter to make the exciter vibrate, and the vibration can easily affect the use of the components inside the exciter. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a vibration exciter for screen sound generation, which reduces vibration by cooperating with the first compression spring, the first protrusion and the first groove. The first protrusion and the first groove are plugged in to increase the resistance between the ring and the annular groove, which can absorb kinetic energy, thereby improving the vibration reduction effect of the vibration exciter body, avoiding the vibration affecting the use of parts inside the vibration exciter body, so as to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vibration exciter for screen sound generation, comprising a vibration exciter body for screen sound generation, a circular plate fixedly provided at the bottom of the vibration exciter body, a first circular hole provided at the bottom of the circular plate, a rubber pad fixedly provided in the first circular hole, a plurality of second circular holes provided at the bottom of the rubber pad, a vibration damping assembly provided in each second circular hole, the vibration damping assembly comprising a hollow tube, the top ends of the plurality of hollow tubes respectively pass through the plurality of second circular holes and are fixed to the bottom of the vibration exciter body, a round block is slidably provided inside each hollow tube, a first compression spring is fixedly provided between the top of the round block and the bottom of the vibration exciter body, the bottom of the round block extends to the bottom of the circular plate, an annular groove is provided on the inner wall of the second circular hole, a ring is provided in the annular groove, the ring is fixedly sleeved on the round block to improve the sliding stability of the ring.

[0007] In a preferred embodiment, a plurality of first grooves are formed on the inner wall of each annular groove, and a first protrusion is formed in each of the plurality of first grooves. The first protrusion is fixed on the outer wall of the collar to increase the resistance between the collar and the annular groove, thereby offsetting the kinetic energy and further improving the vibration reduction effect.

[0008] In a preferred embodiment, the multiple first grooves on the inner wall of each annular groove are distributed in an annular array, and the multiple first protrusions on the outer wall of each collar are distributed in an annular array, so as to increase the resistance between the collar and the annular groove.

[0009] In a preferred embodiment, three limit grooves are formed on the inner wall of each annular groove, and limit blocks are slidably provided in the three limit grooves. The limit blocks are fixed to the outer wall of the collar to improve the stability of the collar when it moves up and down.

[0010] In a preferred embodiment, a plurality of circular grooves are provided on the top of the circular plate, a through hole is provided on the bottom of the plurality of circular grooves, a bolt passes through each circular groove, and the bottom end of the bolt passes through the through hole and extends to the bottom of the circular plate, so as to fix the circular plate and the screen together.

[0011] In a preferred embodiment, a second compression spring is fixedly provided between the bottom of each bolt and the top of the circular groove to play a buffering role between the bolt and the circular plate.

[0012] In a preferred embodiment, a plurality of second protrusions are fixedly provided on the outer wall of each bolt, a plurality of second grooves matching the second protrusions are opened on the inner wall of each through-hole, and the plurality of second protrusions are respectively inserted into the plurality of second grooves to increase the resistance between the bolt and the through-hole, thereby improving the vibration reduction effect.

[0013] Technical effects and advantages of the utility model:

[0014] 1. The utility model fixes a circular plate to a screen frame, the top of a vibration exciter body contacts the screen, the vibration exciter body is energized to generate vibrations to make the screen make sounds, and the round blocks in a plurality of hollow tubes slide up and down due to the vibrations, driving the sleeve ring to slide in the annular groove, and the first compression spring cooperates with the first protrusion and the first groove to reduce vibration, and the first protrusion and the first groove are plugged in to increase the resistance of the sleeve ring when it slides, which can absorb kinetic energy, thereby improving the vibration reduction effect of the vibration exciter body and preventing the vibration from affecting the use of parts in the vibration exciter body.

[0015] 2. A second compression spring is arranged between each bolt and the circular groove, and the second compression spring is used to buffer vibration. At the same time, multiple second protrusions on each bolt are respectively engaged with multiple second grooves. The second protrusions cooperate with the second grooves to increase the resistance between the bolt and the circular plate, absorb kinetic energy, and thus improve the vibration reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a bottom view of the overall structure of the utility model;

[0018] Figure 3 This is a cross-sectional view of the rubber pad of the utility model;

[0019] Figure 4 For this utility model Figure 3 A magnified view of part A in FIG.

[0020] Figure 5 It is a cross-sectional view of a circular plate of the present utility model.

[0021] The reference numerals are: 1, vibration exciter body; 2, circular plate; 3, first circular hole; 4, rubber pad; 5, second circular hole; 6, vibration reduction assembly; 7, first groove; 8, first protrusion; 9, limiting groove; 10, limiting block; 11, circular groove; 12, through hole; 13, bolt; 14, second compression spring; 15, second protrusion; 16, second groove;

[0022] 601, hollow tube; 602, round block; 603, first compression spring; 604, annular groove; 605, collar. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Refer to the instruction manual Figure 1-5 The utility model provides a vibration exciter for screen sound generation, including a vibration exciter body 1 for screen sound generation, a circular plate 2 is fixedly provided at the bottom of the vibration exciter body 1, a first circular hole 3 is opened at the bottom of the circular plate 2, a rubber pad 4 is fixedly provided in the first circular hole 3, a plurality of second circular holes 5 are opened at the bottom of the rubber pad 4, a vibration reduction component 6 is provided in each second circular hole 5, the vibration reduction component 6 includes a hollow tube 601, the top ends of the plurality of hollow tubes 601 respectively penetrate the plurality of second circular holes 5 and are fixed to the bottom of the vibration exciter body 1, a round block 602 is slidably provided inside each hollow tube 601, a first compression spring 603 is fixedly provided between the top of the round block 602 and the bottom of the vibration exciter body 1, and the bottom of the round block 602 extends to below the circular plate 2;

[0025] The inner wall of the second circular hole 5 is provided with an annular groove 604, and a collar 605 is provided in the annular groove 604. The collar 605 is fixedly sleeved on the round block 602 to improve the sliding stability of the collar 605. A plurality of first grooves 7 are provided on the inner wall of each annular groove 604, and a first convex block 8 is provided in each of the plurality of first grooves 7. The first convex block 8 is fixed on the outer wall of the collar 605 to increase the resistance between the collar 605 and the annular groove 604, so as to reduce the elastic force of the first compression spring 603.

[0026] Moreover, the multiple first grooves 7 on the inner wall of each annular groove 604 are distributed in an annular array, and the multiple first protrusions 8 on the outer wall of each ring 605 are distributed in an annular array, which are used to increase the resistance of the ring 605 when sliding up and down. The top of the circular plate 2 is provided with a plurality of circular grooves 11, and the bottom of the plurality of circular grooves 11 is provided with through holes 12. A bolt 13 passes through each circular groove 11, and the bottom end of the bolt 13 passes through the through hole 12 and extends to the bottom of the circular plate 2, which is used to fix the circular plate 2 to the screen.

[0027] When in use, first use multiple bolts 13 to fix the circular plate 2 to the screen frame, and make the top of the vibration exciter body 1 contact the screen, then energize the vibration exciter body 1, the vibration exciter body 1 generates vibration and transmits it to the screen to make sound. When the screen vibration is transmitted to the circular plate 2, the round blocks 602 in the multiple hollow tubes 601 slide up and down due to the vibration, driving the ring 605 to slide in the annular groove 604, and the first protrusion 8 and the first groove 7 are plugged in to increase the resistance between the ring 605 and the annular groove 604, offsetting the vibration transmitted to the vibration exciter body 1, thereby reducing the vibration of the vibration exciter body 1 during use, and preventing the vibration from affecting the connection firmness of the voice coil wire in the vibration exciter body 1, as well as the use of other parts.

[0028] Refer to the instruction manual Figure 4 and5 , three limiting grooves 9 are formed on the inner wall of each annular groove 604, and limiting blocks 10 are slidably arranged in the three limiting grooves 9, and the limiting blocks 10 are fixed to the outer wall of the collar 605 to improve the stability of the collar 605 when it moves up and down, and a second compression spring 14 is fixed between the bottom of each bolt 13 and the top of the circular groove 11 to play a buffering role between the bolt 13 and the circular plate 2;

[0029] In addition, a plurality of second protrusions 15 are fixedly provided on the outer wall of each bolt 13, and a plurality of second grooves 16 adapted to the second protrusions 15 are opened on the inner wall of each through hole 12. The plurality of second protrusions 15 are respectively inserted into the plurality of second grooves 16 to increase the resistance between the bolt 13 and the through hole 12, thereby reducing the elastic force of the second compression spring 14 during deformation.

[0030] By arranging a second compression spring 14 between each bolt 13 and the circular groove 11, when the vibration is transmitted to the circular plate 2, it is buffered by the second compression spring 14. At the same time, the multiple second protrusions 15 on each bolt 13 are respectively engaged with the multiple second grooves 16. The second protrusions 15 cooperate with the second grooves 16 to increase the resistance between the bolt 13 and the circular plate 2, thereby increasing the resistance between the bolt 13 and the circular plate 2, absorbing kinetic energy, and greatly improving the vibration reduction effect.

[0031] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A vibration exciter for screen sound generation, comprising a vibration exciter body (1) for screen sound generation, characterized in that: A circular plate (2) is fixedly provided at the bottom of the vibration exciter body (1), a first circular hole (3) is provided at the bottom of the circular plate (2), a rubber pad (4) is fixedly provided in the first circular hole (3), and a plurality of second circular holes (5) are provided at the bottom of the rubber pad (4); A vibration reduction assembly (6) is provided in each second circular hole (5), the vibration reduction assembly (6) comprising a hollow tube (601), the top ends of the plurality of hollow tubes (601) respectively passing through the plurality of second circular holes (5) and being fixed to the bottom of the vibration exciter body (1), a round block (602) being slidably provided inside each hollow tube (601), a first compression spring (603) being fixedly provided between the top of the round block (602) and the bottom of the vibration exciter body (1), and the bottom of the round block (602) extending to below the circular plate (2); An annular groove (604) is provided on the inner wall of the second circular hole (5), a sleeve ring (605) is provided in the annular groove (604), and the sleeve ring (605) is fixedly sleeved on the round block (602) to improve the sliding stability of the sleeve ring (605).

2. The vibration exciter for screen sound generation according to claim 1, characterized in that: A plurality of first grooves (7) are formed on the inner wall of each annular groove (604), and a first protrusion (8) is formed in each of the plurality of first grooves (7). The first protrusion (8) is fixed on the outer wall of the collar (605) and is used to increase the resistance between the collar (605) and the annular groove (604).

3. The vibration exciter for screen sound generation according to claim 2, characterized in that: The multiple first grooves (7) on the inner wall of each annular groove (604) are distributed in an annular array, and the multiple first protrusions (8) on the outer wall of each collar (605) are distributed in an annular array, so as to increase the resistance between the collar (605) and the annular groove (604).

4. The vibration exciter for screen sound generation according to claim 1, characterized in that: Three limiting grooves (9) are formed on the inner wall of each annular groove (604), and limiting blocks (10) are slidably disposed in the three limiting grooves (9). The limiting blocks (10) are fixed to the outer wall of the collar (605) to improve the stability of the collar (605) when it moves up and down.

5. The vibration exciter for screen sound generation according to claim 1, characterized in that: The circular plate (2) is provided with a plurality of circular grooves (11) at the top, each of the plurality of circular grooves (11) is provided with a through hole (12) at the bottom, each circular groove (11) is penetrated by a bolt (13), and the bottom end of the bolt (13) penetrates the through hole (12) and extends to the bottom of the circular plate (2) for mounting the circular plate (2).

6. The vibration exciter for screen sound generation according to claim 5, characterized in that: A second compression spring (14) is fixedly arranged between the bottom of each bolt (13) and the top of the circular groove (11) to play a buffering role between the bolt (13) and the circular plate (2).

7. The vibration exciter for screen sound generation according to claim 5, characterized in that: A plurality of second protrusions (15) are fixedly provided on the outer wall of each bolt (13), a plurality of second grooves (16) adapted to the second protrusions (15) are provided on the inner wall of each through hole (12), and the plurality of second protrusions (15) are respectively inserted into the plurality of second grooves (16) to increase the resistance between the bolt (13) and the through hole (12).

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