Sound box with protection structure

Abstract

The invention discloses a sound box with a protection structure, and relates to the related technical field of sound box equipment, the sound box comprises a shell and a loudspeaker assembly arranged in the shell, one side of the shell is provided with a net body used for protecting a sound production part of the loudspeaker assembly, and a vibration reduction mechanism is arranged between the interior of the shell and the loudspeaker assembly. An extrusion part is arranged at the bottom of the shell, the loudspeaker assembly has two positions in the shell: a working position, when the extrusion part extrudes the loudspeaker assembly, the loudspeaker assembly abuts against one side, where the net body is mounted, of the shell, and when the extrusion part extrudes the loudspeaker assembly, the loudspeaker assembly abuts against the other side, where the net body is mounted, of the shell; and at the non-working position, when the extrusion part removes the extrusion action on the loudspeaker assembly, the loudspeaker assembly is suspended in the shell based on the elastic force action of the vibration reduction mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of speaker devices, and specifically relates to a speaker with a protection structure. Background Art

[0002] As is well known, a speaker is a common audio output device used to convert electrical signals into sound signals and is widely used in scenarios such as homes, offices, and outdoors.

[0003] During the use of a speaker, it is inevitable that problems such as being knocked over by an external force may occur. In the light case, the outer shell of the speaker is damaged, and in the severe case, the internal sound - generating components are damaged. Therefore, it is necessary to protect the use of the speaker to avoid damage problems when the speaker is impacted by an external force during use. Therefore, in the prior art, such as the patent with the publication number CN213638084U, the publication date of July 06, 2021, and the name of "A Speaker with a Protection Structure", which includes a speaker body, a door is fixedly installed on one side of the speaker body, screw holes are opened on the door, a knob is fixedly installed on the top of the speaker body, fixing blocks are fixedly installed on opposite sides of the speaker body, the fixing block includes an upper cover plate and a lower cover plate, two first through - holes are opened on the upper cover plate, two main rectangular grooves are opened on one side of the upper cover plate, two second through - holes are opened on the lower cover plate, two sub - rectangular grooves are opened on the lower cover plate, fasteners are fixedly installed on opposite sides of the lower cover plate, two third through - holes are opened on the fasteners, and a bracket is installed on the fixing block. The beneficial effect of the present utility model is that: through the I - shaped bracket installed on the fixing block, the multimedia active speaker can be completely wrapped in the bracket. When it falls from a height, the bracket first contacts the ground, and at the same time, the sponge can improve the shock absorption and buffering performance of the bracket, enhancing the protection effect.

[0004] The deficiencies of the prior art including the above are that for the protection structure arranged for the speaker, it is basically set outside the speaker. Although it plays a protective role for the speaker to a certain extent, for the overall speaker, it undoubtedly increases the complexity of the external structure and the volume. Summary of the Invention

[0005] The purpose of the present invention is to provide a speaker with a protection structure to solve the technical problems in the related art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A speaker with a protective structure, comprising a housing and a speaker assembly disposed within the housing. A net body for protecting the sound-emitting part of the speaker assembly is installed on one side of the housing. A damping mechanism is provided between the interior of the housing and the speaker assembly. An extrusion member is provided at the bottom of the housing. The speaker assembly has two positions within the housing: the working position, when the extrusion member exerts an extrusion force on the speaker assembly, the speaker assembly abuts against the side of the housing where the net body is installed; the non-working position, when the extrusion member removes the extrusion force on the speaker assembly, based on the elastic force of the damping mechanism, the speaker assembly is suspended within the housing.

[0008] As described above, the damping mechanism includes an outer support frame installed on the inner wall of the housing and an inner support frame installed on the outer wall of the speaker assembly. A plurality of damping springs are provided between the outer support frame and the inner support frame.

[0009] As described above, one end of each damping spring is hinged to the outer support frame, and the other end is hinged to the inner support frame. Each group of damping springs is arranged in a figure-eight structure; based on the elastic force of each group of damping springs, the speaker assembly has a tendency to be in the non-working position.

[0010] As described above, a plurality of damping support rods are further provided between the outer support frame and the inner support frame. The plurality of damping support rods correspond to the plurality of groups of damping springs one by one. Slideways are provided at the corresponding positions of the outer support frame and each damping support rod. One end of the damping support rod is movably arranged within the corresponding slideway, and the other end is hinged to the inner support frame, and the height of the position where one end of the damping support rod is located is higher than the height of the position where the other end is located.

[0011] As described above, the damping support rod includes two curved sections and a straight section connecting the two curved sections.

[0012] As described above, a plurality of anti-slip foot blocks are installed at the bottom of the housing.

[0013] As described above, the foot blocks are slidably arranged on the housing, and in the sliding direction, a first elastic member is provided between the foot blocks and the housing. Based on the common extrusion force of the plurality of foot blocks, the extrusion member pushes the speaker assembly from the non-working position to the working position.

[0014] As described above, the extrusion member includes a first extrusion block installed on each foot block. A plate body is installed on the inner wall of the bottom of the housing through a second elastic member. The position of the plate body changes under the extrusion of the first extrusion block; a second extrusion block is provided at the central position of the plate body. A third elastic member is provided between the second extrusion block and the housing. The position of the plate body limits the distance that the second extrusion block moves based on the elastic force of the third elastic member; a compression block is installed at the bottom of the inner support frame. Under the extrusion of the second extrusion block, the compression block drives the speaker assembly to move between the non-working position and the working position.

[0015] As described above, the number of the first extrusion blocks is four, and they are evenly arranged around the plate body. The first extrusion blocks are provided with first extrusion inclined surfaces, and the plate body is provided with first pressure-receiving inclined surfaces at positions corresponding to each first extrusion inclined surface. The center position of the plate body is provided with a second extrusion inclined surface, and the second extrusion block is provided with a second pressure-receiving inclined surface; during the stroke in which any one of the first pressure-receiving inclined surfaces loses the extrusion effect of the corresponding first extrusion inclined surface, the second extrusion inclined surface will squeeze the second pressure-receiving inclined surface to drive the second extrusion block to disengage from the extrusion of the pressure-receiving block.

[0016] As described above, the second extrusion inclined surface is integrally in a ring structure, and the second pressure-receiving inclined surface is in a conical structure.

[0017] The beneficial effect of the present invention is that by arranging the damping mechanism inside the housing and at the position between the housing and the speaker assembly, and using the extrusion effect of the extrusion member, the speaker assembly can be pushed from the non-working position to the working position. When the speaker is impacted, the extrusion member withdraws the pushing effect on the speaker assembly, and then the damping mechanism is used to pull the speaker assembly back to the non-working position, thus forming protection for the speaker assembly and having no impact on the external structure of the speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0019] Figure 1 It is a three-dimensional structure schematic diagram of a speaker with a protection structure provided in an embodiment of the present invention;

[0020] Figure 2 It is a three-dimensional structure schematic diagram of the internal structure of a speaker with a protection structure provided in an embodiment of the present invention;

[0021] Figure 3 It is an exploded view of a speaker with a protection structure provided in an embodiment of the present invention from a first perspective;

[0022] Figure 4 It is an exploded view of a speaker with a protection structure provided in an embodiment of the present invention from a second perspective;

[0023] Figure 5 It is a cross-sectional structure schematic diagram of an extrusion member of a speaker with a protection structure provided in an embodiment of the present invention.

[0024] Description of the reference numerals:

[0025] 1. Housing; 2. Speaker assembly; 3. Mesh body; 4. Back plate; 5. Outer support frame; 6. Inner support frame; 7. Vibration damping spring; 8. Vibration damping support rod; 80. Bending section; 81. Straight section; 9. Slideway; 10. Sphere; 11. Support foot block; 12. First extrusion block; 13. Plate body; 14. Second extrusion block; 15. Compressed block; 16. Blocking ring; 17. First extrusion inclined plane; 18. First compressed inclined plane; 19. Second extrusion inclined plane; 20. Second compressed inclined plane; 21. Insertion plate; 22. Slot. Detailed implementation manner

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further introduced in detail below with reference to the appended Figure 1 to the appended Figure 5 drawings.

[0027] In an embodiment of the present invention, a speaker with a protection structure is provided, including a housing 1 and a speaker assembly 2 arranged in the housing 1. A mesh body 3 for protecting the sound-emitting part of the speaker assembly 2 is installed on one side of the housing 1. A vibration damping mechanism is provided between the inside of the housing 1 and the speaker assembly 2. An extrusion member is provided at the bottom of the housing 1. There are two positions of the speaker assembly 2 in the housing 1: the working position, when the extrusion member exerts an extrusion effect on the speaker assembly 2, the speaker assembly 2 abuts against the side of the housing 1 where the mesh body 3 is installed; the non-working position, when the extrusion member removes the extrusion effect on the speaker assembly 2, based on the elastic force of the vibration damping mechanism, the speaker assembly 2 is suspended in the housing 1.

[0028] Specifically, the overall shell of the speaker is in a cuboid structure, mainly including two surfaces, namely the front and back surfaces, the left and right surfaces, and the upper and lower surfaces. The sound-emitting part of the speaker assembly 2 corresponds to the front surface of the housing 1, that is, the side where the mesh body 3 is installed. The mesh body 3 can prevent external bumps from directly acting on the sound-emitting part of the speaker assembly 2. A back plate 4 with heat dissipation holes is installed on the back surface of the housing 1. When the speaker is impacted by the outside world, there are two situations. One is that it does not fall due to the impact, and the housing 1 can resist the impact of this intensity and play a protective role for the internal speaker assembly 2. The other is that it falls due to the impact, and when it falls, the housing 1 will have a secondary impact with the base surface (such as the ground, the tabletop, etc.) on which it is placed. In order to avoid damage to the speaker, in the prior art, usually a corresponding protection structure is arranged on the outside of the speaker, that is, on the outer wall of the housing 1. Although it can play a certain role in protecting the speaker to a certain extent, for the overall speaker, it undoubtedly increases the complexity of the external structure and the volume.

[0029] Based on the above technical problems, in this embodiment, another method is adopted to arrange the corresponding protection structure, that is, a space is left between the inside of the housing 1 and the speaker assembly 2, and a damping mechanism is arranged in this space. The speaker assembly 2 has a working position and a non-working position in the housing 1. When in the working position, since the speaker assembly 2 will generate strong vibrations during operation, if the speaker assembly 2 is not firmly fixed to the housing 1, the vibrations may cause unnecessary friction and loosening between the speaker assembly 2 and the housing 1, resulting in the generation of noise. And the fixed connection between the two can ensure that the vibrations of the speaker assembly 2 will not change due to the loosening of the box body, thus ensuring the stability and consistency of the sound. Therefore, a plug board 21 is fixedly connected to the speaker assembly 2 at a position close to the sounding part, a slot 22 is opened on the front surface of the housing 1, and a pressing member is arranged at the bottom of the housing 1. When the speaker assembly 2 needs to work, the pressing member exerts a pressing force on the speaker assembly 2, which will drive the plug board 21 to be inserted into the slot 22. The insertion of the plug board 21 into the slot 22 can limit the movement of the speaker assembly 2 in all directions of up, down, left, and right. The slot limits the forward movement of the speaker assembly 2, and the pressing member limits the backward movement of the speaker assembly 2. When the speaker assembly 2 does not need to work, it should be protected. Therefore, at this time, the pressing member removes the pressing force on the speaker assembly 2, and the resilience of the damping mechanism is used to pull the speaker assembly 2 to the non-working position in the housing 1 (such as the middle part in the housing 1, with a certain distance from each surface of the housing 1). The damping mechanism can utilize elastic elements, such as springs, pneumatic and electric elements, rubber pads, etc. This is the prior art, and its arrangement method between the speaker assembly 2 and the inner wall of the housing 1 can be arranged according to actual needs and will not be elaborated here. The pressing member, such as a separately arranged driving mechanism (this is the prior art and will not be elaborated), can realize the extrusion and pushing of the speaker assembly 2. A pressure sensor can also be arranged on the housing 1 (this is the prior art and will not be elaborated). In this way, the driving mechanism can know the impact situation of the housing 1 according to the signal of the pressure sensor, and then judge whether it is necessary to remove the extrusion of the speaker assembly 2 and make it return to the non-working position for protection.

[0030] The beneficial effect of this embodiment is that by arranging the damping mechanism inside the housing 1, at the position between the housing 1 and the speaker assembly 2, and using the extrusion effect of the pressing member, the speaker assembly 2 can be pushed from the non-working position to the working position. When the speaker is impacted, the pressing member removes the pushing force on the speaker assembly 2, and then the damping mechanism is used to pull the speaker assembly 2 back to the non-working position, thus forming protection for the speaker assembly 2 and having no impact on the external structure of the speaker.

[0031] Preferably, the damping mechanism includes an outer support frame 5 installed on the inner wall of the housing 1 and an inner support frame 6 installed on the outer wall of the speaker assembly 2, and a plurality of damping springs 7 are arranged between the outer support frame 5 and the inner support frame 6.

[0032] Specifically, the structure of the outer support frame 5 is adapted to the inner wall structure of the housing 1, and the two are fixed by bolts. The structure of the inner support frame 6 is adapted to the structure of the speaker assembly 2, and the two are in interference fit. Both the outer support frame 5 and the inner support frame 6 have a certain toughness, that is, when subjected to an external force, they can produce a certain elastic deformation. In this way, two additional protective layers are equivalent between the speaker assembly 2 and the housing 1. Then, a plurality of damping springs 7 are arranged between the outer support frame 5 and the inner support frame 6. In an optional embodiment, one end of each damping spring 7 is hinged to the outer support frame 5 (in the way of spherical hinge connection), and the other end is hinged to the inner support frame 6 (in the way of spherical hinge connection). Each group of damping springs 7 is arranged in a figure-eight structure, that is, in a figure-eight arrangement in front and behind between the front and rear surfaces of the housing 1. Based on the elastic force of each group of damping springs 7, the speaker assembly 2 has a tendency to be in a non-working position. Preferably, the number of groups of damping springs 7 is four, and two groups are symmetrically arranged on the left and right sides of the inner support frame 6, and the two groups of damping springs 7 on the same side are symmetrically arranged on the upper and lower sides. That is, by using the elastic force of the four groups of damping springs 7, when the speaker assembly 2 is in the non-working position, it is suspended inside the housing 1 and maintains a substantially consistent distance from all the inner walls of the housing 1. When the speaker is tilted due to an external impact, the speaker assembly 2 in the non-working position has enough shaking space, and the damping springs 7 are used to buffer and protect the speaker assembly 2.

[0033] Furthermore, a plurality of damping support rods 8 are also provided between the outer support frame 5 and the inner support frame 6. The plurality of damping support rods 8 correspond to the plurality of groups of damping springs 7 one by one. Slideways 9 are provided at the corresponding positions of the outer support frame 5 and each damping support rod 8. One end of the damping support rod 8 is movably arranged in the corresponding slideway 9, and the other end is hinged to the inner support frame 6, and the height of the position where one end of the damping support rod 8 is located is higher than the height of the position where the other end is located.

[0034] Specifically, in the foregoing embodiments, the number of groups of the damping springs 7 is preferably four. Correspondingly, the number of the damping struts 8 is four. Two damping struts 8 on the same side of the inner support frame 6 are arranged in parallel. In cooperation with the inner support frame 6 and the outer support frame 5, a structure similar to a parallelogram is formed. One end of the damping strut 8 in the slideway 9 can slide in the slideway 9 or swing in multiple directions. That is, a sphere 10 is slidably arranged in the slideway 9. The damping strut 8 is fixedly connected to the sphere 10. The damping strut 8 is connected to the inner support frame 6 through a spherical hinge. However, the height of the end of the damping strut 8 connected to the slideway 9 is higher than the end connected to the inner support frame 6. Then, the speaker assembly 2 can shake in multiple directions in the housing 1. However, when swinging in any direction, there is a sub-direction swinging towards the lower surface of the housing 1. In this way, the center of gravity of the speaker assembly 2 can be reduced, and the stability of the speaker can be improved. When it is tilted, due to the low center of gravity, the tilting amplitude of the object is reduced, and the impact force received is relatively small. The arrangement of the slideway 9 can allow a certain movement of the other damping strut 8 when the distance between one side of the inner support frame 6 and the outer support frame 5 is reduced, so that the damping spring 7 can smoothly play a role in damping and buffering.

[0035] In a preferred embodiment, the damping strut 8 includes two bent sections 80 and a straight section 81 connecting the two bent sections 80. The function of the bent section 80 is such that there is a relatively large distance between the overall damping strut 8 and both the inner support frame 6 and the outer support frame 5, leaving sufficient space for the shaking of the speaker assembly 2 in the housing 1, so as to better utilize the buffering of the damping spring 7 to protect the speaker assembly 2.

[0036] Preferably, a plurality of anti-slip foot blocks 11 are installed at the bottom of the housing 1; specifically, installing the foot blocks 11 on the bottom surface of the housing 1 can keep the speaker stable when placed on a base surface and is not likely to change its position due to vibration.

[0037] In another embodiment of the present invention, the foot blocks 11 are slidably arranged on the housing 1, and in the sliding direction, a first elastic member is provided between the foot blocks 11 and the housing 1. Based on the common extrusion of the plurality of foot blocks 11, the extrusion member pushes the speaker assembly 2 from the non-working position to the working position; the extrusion member includes a first extrusion block 12 installed on each foot block 11. The inner wall of the bottom of the housing 1 is provided with a plate body 13 through a second elastic member. The position of the plate body 13 changes under the extrusion of the first extrusion block 12; a second extrusion block 14 is provided at the center position of the plate body 13. A third elastic member is provided between the second extrusion block 14 and the housing 1. The position of the plate body 13 limits the moving distance of the second extrusion block 14 based on the elastic force of the third elastic member; a compression block 15 is installed at the bottom of the inner support frame 6. Under the extrusion of the second extrusion block 14, the compression block 15 drives the speaker assembly 2 to move between the non-working position and the working position.

[0038] Specifically, in the foregoing embodiments, for the speaker assembly 2 to move from the non-working position to the working position, the squeezing action of the squeezing member is utilized. The squeezing member adopts a driving mechanism and a sensor. In this embodiment, the position change of the speaker assembly 2 is achieved by the movement of the support foot block 11.

[0039] That is, the support foot block 11 is slidably arranged at the bottom of the housing 1. The sliding direction can be from the bottom to the top of the housing 1 or in the reverse direction. And in its sliding direction, a first elastic member is arranged between the support foot block 11 and the housing 1 bracket. When the speaker is placed on the base surface, the gravity of the speaker is used to squeeze the first elastic member. At this time, relative to the housing 1, the support foot block 11 retracts into the housing 1 by a certain part. Then, the moving force of this part of the support foot block 11 is utilized. A first extrusion block 12 is installed on each support foot block 11 through bolts. A plate body 13 is arranged inside the bottom of the housing 1. A second elastic member is arranged between the plate body 13 and the housing 1. Preferably, the number of support foot blocks 11 is four, which are respectively arranged corresponding to the four corners at the bottom of the housing 1. Correspondingly, the plate body 13 is in a rectangular structure, and its four corners respectively correspond to the four first extrusion blocks 12. A second extrusion block 14 is arranged at the center position of the plate body 13. The second extrusion block 14 is slidably arranged along the up and down direction at the bottom of the housing 1. And in the sliding direction, a third elastic member is connected between the second extrusion block 14 and the bottom of the housing 1. Based on the elastic force of the third elastic member, the second extrusion block 14 has a tendency to always squeeze the compression block 15. A blocking ring 16 is arranged on the second extrusion block 14. The blocking ring 16 is located on the lower surface of the plate body 13 and abuts against the lower surface of the plate body 13. That is, when the speaker needs to be in the working position, the speaker is placed on the base surface. The four support foot blocks 11 retract into the housing 1 by a certain distance under the action of the gravity of the speaker. The four support foot blocks 11 drive the four first extrusion blocks 12 to squeeze the four corners of the plate body 13, causing the plate body 13 to move upward. Then, the restriction of the second extrusion block 14 is released. Under the elastic force of the third elastic member, the second extrusion block 14 moves upward to exert a squeezing action on the compression block 15. The squeezing action achieved by the wedge-shaped fit causes the speaker assembly 2 to swing from the non-working position to the working position. At this time, the elastic force of the damping spring 7 will increase. On the contrary, when the speaker leaves the base surface, under the restoring force of the first elastic member, the four support foot blocks 11 extend out of the housing 1 by a certain distance. The squeezing action of the four first extrusion blocks 12 on the plate body 13 disappears. Under the restoring force of the second elastic member, the plate body 13 squeezes the blocking ring 16 to move downward, causing the second extrusion block 14 to move downward and disengage from the extrusion of the compression block 15. Then, under the restoring force of the damping spring 7, the speaker assembly 2 returns from the working position to the non-working position.

[0040] When the speaker is impacted by an external force and topples over, the four support feet 11 need to completely separate from the base surface before the speaker component 2 can move from the working position to the non-working position. The timeliness of protecting the speaker component 2 is relatively poor. Therefore, in a further embodiment, the number of the first extrusion blocks 12 is four, and they are evenly arranged around the plate body 13. The first extrusion block 12 is provided with a first extrusion inclined surface 17, and a first pressure-receiving inclined surface 18 is provided at a position corresponding to each first extrusion inclined surface 17 on the plate body 13. A second extrusion inclined surface 19 is provided at the central position of the plate body 13, and a second pressure-receiving inclined surface 20 is provided on the second extrusion block 14; during the stroke when any first pressure-receiving inclined surface 18 loses the extrusion action of the corresponding first extrusion inclined surface 17, the second extrusion inclined surface 19 will squeeze the second pressure-receiving inclined surface 20 to drive the second extrusion block 14 to disengage from the extrusion of the pressure-receiving block 15; the second extrusion inclined surface 19 is integrally in a ring structure, and the second pressure-receiving inclined surface 20 is in a conical structure.

[0041] Specifically, the first extrusion inclined surface 17 and the first pressure-receiving inclined surface 18 form an extrusion action through wedge-shaped cooperation, and the second extrusion inclined surface 19 and the second pressure-receiving inclined surface 20 form an extrusion action through wedge-shaped cooperation. When the two first extrusion surfaces at the diagonal corners no longer have an extrusion action on the corresponding two first pressure-receiving inclined surfaces, the plate body 13 can slide in the diagonal direction. That is, when any first pressure-receiving inclined surface 18 loses the extrusion of the corresponding first extrusion inclined surface 17, the first pressure-receiving inclined surface 18 at its diagonal position is still under the extrusion action of the corresponding first extrusion inclined surface 17, and the plate body 13 is also under the resilience of the second elastic member. Since the first extrusion inclined surface 17 and the first pressure-receiving inclined surface 18 form an extrusion action through wedge-shaped cooperation, the plate body 13 will tend to move in the diagonal direction. Then, this movement can be utilized to drive the second extrusion inclined surface 19 to squeeze the second pressure-receiving inclined surface 20, so that the second extrusion block 14 disengages from the extrusion of the pressure-receiving block 15. Since the second extrusion inclined surface 19 is integrally in a ring structure and the second pressure-receiving inclined surface 20 is in a conical structure, in this way, during the process of any support foot 11 leaving the base surface, the speaker component 2 can move to the non-working position to be protected under the resilience of the damping spring 7, thereby effectively improving the timeliness of protecting the speaker component 2.

[0042] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as a limitation on the scope of the claims of the present invention.

Claims

1. A speaker with a protective structure, comprising a housing and a speaker assembly disposed within the housing. A mesh body for protecting the sound-emitting part of the speaker assembly is installed on one side of the housing. It is characterized in that, A damping mechanism is provided between the interior of the housing and the speaker assembly. An extrusion member is provided at the bottom of the housing. The speaker assembly has two positions within the housing: Working position: When the extrusion member exerts an extrusion effect on the speaker assembly, the speaker assembly abuts against the side of the housing where the mesh body is installed. Non - working position: When the extrusion member withdraws the extrusion effect on the speaker assembly, based on the elastic force of the damping mechanism, the speaker assembly is suspended within the housing.

2. The sound box with a protection structure according to claim 1, characterized in that, The damping mechanism includes an outer support frame installed on the inner wall of the housing and an inner support frame installed on the outer wall of the speaker assembly. A plurality of damping springs are provided between the outer support frame and the inner support frame.

3. The speaker with a protection structure according to claim 2, wherein, One end of each damping spring is hinged to the outer support frame, and the other end is hinged to the inner support frame. Each group of damping springs is arranged in a figure - eight structure. Based on the elastic force of each group of damping springs, the speaker assembly has a tendency to be in the non - working position.

4. The speaker with a protection structure according to claim 3, characterized in that, A plurality of damping support rods are further provided between the outer support frame and the inner support frame. The plurality of damping support rods correspond to the plurality of groups of damping springs one by one. Slideways are provided at the corresponding positions of the outer support frame and each damping support rod. One end of the damping support rod is movably arranged in the corresponding slideway, and the other end is hinged to the inner support frame. Moreover, the height of the position where one end of the damping support rod is located is higher than the height of the position where the other end is located.

5. The speaker with a protection structure according to claim 4, characterized in that, The damping support rod includes two curved sections and a straight section connecting the two curved sections.

6. The speaker with a protection structure according to claim 4, characterized in that, A plurality of anti - slip foot blocks are installed at the bottom of the housing.

7. The sound box with a protection structure according to claim 6, characterized in that, The foot blocks are slidably arranged on the housing. In the sliding direction, a first elastic member is provided between the foot blocks and the housing. Based on the combined extrusion effect of the plurality of foot blocks, the extrusion member pushes the speaker assembly from the non - working position to the working position.

8. The sound box with a protection structure according to claim 7, characterized in that, The extrusion member includes a first extrusion block installed on each foot block. The inner wall of the bottom of the housing is provided with a plate body through a second elastic member. The position of the plate body changes under the extrusion of the first extrusion block. A second extrusion block is provided at the central position of the plate body. A third elastic member is provided between the second extrusion block and the housing. The position of the plate body limits the distance that the second extrusion block moves based on the elastic force of the third elastic member. A compression block is installed at the bottom of the inner support frame. Under the extrusion of the second extrusion block, the compression block drives the speaker assembly to move between the non - working position and the working position.

9. The sound box with a protection structure according to claim 8, wherein, The number of the first extrusion blocks is four, and they are evenly arranged around the plate body. The first extrusion block is provided with a first extrusion inclined surface. At the position corresponding to each first extrusion inclined surface on the plate body, a first compressed inclined surface is provided. A second extrusion inclined surface is provided at the central position of the plate body. The second extrusion block is provided with a second compressed inclined surface. During the stroke when any one of the first compressed inclined surfaces loses the extrusion of the corresponding first extrusion inclined surface, the second extrusion inclined surface will squeeze the second compressed inclined surface to drive the second extrusion block to disengage from the extrusion of the compression block.

10. The speaker with a protection structure according to claim 9, characterized in that, The second extrusion inclined surface is integrally in a ring - shaped structure, and the second compressed inclined surface is in a conical structure.

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