Sound insulation bin turning plate connecting structure and sound insulation bin

Abstract

The utility model discloses a soundproof bin turning plate connecting structure and a soundproof bin, the free end of a turning plate of the soundproof bin turning plate connecting structure is connected with a lock pin capable of stretching and retracting axially, and the free end of the lock pin can extend out of the end face of the free end of the turning plate; a stop part is arranged on the top plate assembly or the bottom plate assembly, and when the turning plate rotates to a closed state, the free end of the lock pin abuts against the stop part so that the free end of the turning plate can be in a locked state; an unlocking mechanism corresponding to the lock pin is connected to the top plate assembly or the bottom plate assembly and comprises a movable driving block used for driving the lock pin to move so that the free end of the lock pin can be separated from the stop part, and the free end of the turning plate can be in an unlocked state. The turnover plate of the soundproof bin adopts the soundproof bin turnover plate connecting structure. According to the sound insulation bin turning plate connecting structure, the turning plate can be rapidly assembled or disassembled, and operation is easy and convenient.

Description

Technical Field

[0001] The present application relates to the technical field of soundproof chambers, and in particular to a soundproof chamber flap connection structure and a soundproof chamber. Background Art

[0002] A soundproof cabin, also known as an office soundproof cabin, independent house, private cabin, small meeting cabin, etc., is placed in an office area or public place. It has good sound insulation performance and can facilitate 2-3 people to gather together for meetings, conversations, emotional venting, video calls, video live broadcasts, etc. without being disturbed by the external environment.

[0003] The office soundproofing warehouse of the related technology, such as the soundproofing warehouse in the patent application with publication number CN219638504U and name of an office soundproofing warehouse previously applied by the applicant of this case, has a structure including a lower warehouse body, an upper warehouse body, and a driving mechanism for driving the upper warehouse body to rise and fall relative to the lower warehouse body to unfold or fold the soundproofing warehouse. In order to facilitate the user's assembly, the two opposite upper warehouse plates of the upper warehouse body are arranged to be hinged to the lower warehouse body at the lower end, and the upper end is detachably connected to the top plate of the upper warehouse body, so the two upper warehouse plates are also called flaps; when installing, the user first drives the top plate to unfold by the driving mechanism, and then rotates the two flaps upward, and connects the upper ends of the two flaps to the bottom of the top plate; similarly, when folding the upper warehouse body, it is necessary to first disconnect the upper ends of the two flaps from the top plate, and rotate the two flaps downward respectively to fold with the lower warehouse body.

[0004] During the actual installation of the office soundproofing bin of the related art, when the free ends of the two rotatable flaps are rotated to abut against the top plate, the free ends of the flaps need to be fixed to the top plate by screws or pins, and the installation is relatively complicated. In addition, when the office soundproofing bin is folded and the free ends of the two flaps need to be disconnected from the top plate, tools are required to remove the connecting screws or pins, so the operation is very troublesome, which affects the installation and disassembly efficiency of the office soundproofing bin. Utility Model Content

[0005] The technical problem to be solved by the present application is to overcome the defects of the above-mentioned related technologies and provide a sound insulation compartment flap connection structure that allows the flap to be quickly assembled or disassembled and is simple and convenient to operate.

[0006] The technical solution of the present application is to provide a soundproof bin flap connection structure having the following structure: the pivot end of the flap is rotatably connected to the middle part of the soundproof bin, and the free end of the flap is detachably connected to the top plate assembly of the upper bin body of the soundproof bin or the bottom plate assembly of the lower bin body of the soundproof bin; the free end of the flap is connected to an axially retractable locking pin, and the free end of the locking pin can extend out of the end surface of the free end of the flap; a stopper is provided on the top plate assembly or the bottom plate assembly, and when the flap is rotated to a closed state, the free end of the locking pin abuts against the stopper to put the free end of the flap in a locked state; an unlocking mechanism corresponding to the locking pin is connected to the top plate assembly or the bottom plate assembly, and the unlocking mechanism includes a movable driving block for driving the locking pin to move so that the free end of the locking pin is disengaged from the stopper, so that the free end of the flap is in an unlocked state.

[0007] In some embodiments, a first elastic member is connected to the locking pin, and the first elastic member enables the free end of the locking pin to always have a movement tendency to extend out of the end surface of the free end of the flap.

[0008] In some embodiments, an installation cavity is provided in the top plate assembly, and a slider is slidably engaged in the installation cavity along the vertical direction, and the slider abuts against the end of the driving block to make the driving block move synchronously with the slider; the unlocking mechanism also includes a button movably connected to the top plate assembly, and the inner end of the button is connected to the slider to drive the slider to slide.

[0009] In some embodiments, a second elastic member is connected to the installation cavity, one end of the second elastic member is connected to the slider, and the other end of the second elastic member is connected to the inner wall of the installation cavity, so that the slider always has a tendency to move away from the flap.

[0010] In some embodiments, a vertically arranged guide rod is connected to the installation cavity, and the sliding block is provided with a guide hole slidably sleeved on the guide rod; and the second elastic member is sleeved on the guide rod.

[0011] In some embodiments, a button hole for installing the button is provided on the side wall of the top plate assembly; a first inclined surface is provided on the top of the slider close to the button, and a second inclined surface is provided at the inner end of the button to slide in contact with the first inclined surface, and when the button is pressed, the second inclined surface drives the slider to move in a direction close to the locking pin.

[0012] In some embodiments, a bottom portion of the stop portion close to the locking pin is provided with a smoothly transitioned arc surface.

[0013] In summary, the present invention has the following advantages compared with the related art: the free end of the soundproof bin flap is connected with an axially retractable locking pin, and a stopper is provided on the top plate assembly or the bottom plate assembly. When the flap is rotated to a closed state, the locking pin is clamped on the inner side of the stopper, and the free end of the flap can be locked under the limit of the stopper; when the soundproof bin is disassembled or folded, the driving block of the unlocking mechanism can be moved so that the driving block pushes the free end of the locking pin. When the free end of the locking pin is separated from the stopper, the free end of the flap is unlocked, so that the flap can be rotated and folded. Therefore, when installing the soundproof bin flap, it is only necessary to rotate the flap to a closed state, and the locking pin and the stopper can abut against each other to lock the free end of the flap; when folding the flap, it is only necessary to move the driving block of the unlocking mechanism so that the free end of the locking pin can be separated from the stopper to unlock the free end of the flap. Therefore, the flap of the soundproof bin flap connection structure can be quickly assembled or disassembled, and the operation is simple and convenient.

[0014] Another technical solution of the present application is to provide a soundproof bin having the following structure, including a lower bin body and an upper bin body, wherein the upper bin body includes a top plate assembly, an upper bin plate and at least one flap, and / or the lower bin body includes a bottom plate assembly, a lower bin plate and at least one flap, and the flap connection structure adopts the soundproof bin flap connection structure described in any of the above embodiments. The flap of the soundproof bin adopts the soundproof bin flap connection structure of any of the above embodiments, so when installing the flap, it is only necessary to rotate the flap to a closed state, and the locking pin can abut against the stopper to lock the free end of the flap; when folding the flap, it is only necessary to move the driving block of the unlocking mechanism to disengage the free end of the locking pin from the stopper to unlock the free end of the flap, so that the flap can be quickly assembled or disassembled, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a flap opening structure of a soundproof compartment flap connection structure according to some embodiments of the present application.

[0016] Figure 2 It is a schematic cross-sectional structure diagram of a soundproof compartment flap connection structure according to some embodiments of the present application.

[0017] Figure 3 yes Figure 2 A magnified schematic diagram of part A in FIG.

[0018] Figure 4 It is a schematic cross-sectional view of an open flap of a soundproof compartment flap connection structure according to some embodiments of the present application.

[0019] Figure 5 yes Figure 4 An enlarged schematic diagram of part B in FIG.

[0020] Figure 6 yes Figure 4 Enlarged schematic diagram of part C in FIG.

[0021] Figure 7 It is a structural schematic diagram of a soundproof compartment flap connection structure according to some embodiments of the present application.

[0022] Figure 8 This is a schematic structural diagram from another angle of a soundproof compartment flap connection structure according to some embodiments of the present application.

[0023] Description of reference numerals:

[0024] 1. Lower storage body, 2. Upper storage body, 200. Top plate assembly, 201. Flip plate, 202. Mounting cavity, 203. Driving block, 204. Slider, 205. Button hole, 206. Button, 207. First inclined surface, 208. Second elastic member, 209. Guide rod, 210. Second inclined surface, 211. Arc surface, 212. Guide hole, 3. Lock pin. DETAILED DESCRIPTION

[0025] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0026] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0027] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] See also Figures 1 to 8 As shown;

[0030] The embodiment of the present application discloses a soundproof bin flap connection structure, which is also called a silent bin, an office soundproof cabin, etc. The soundproof bin includes a lower bin body 1 and an upper bin body 2. The lower bin body 1 includes a base and a plurality of lower bin plates. The four corners of the base are connected with four vertically arranged telescopic columns. The lower bin plate is connected between two adjacent telescopic columns. In this embodiment, there are four lower bin plates, and the base, the four lower bin plates, and the four telescopic columns are jointly arranged to form a lower bin body 1 with a closed bottom and four sides and an open upper end. The upper bin body 2 includes a top plate assembly 200 and an upper bin plate. The top plate assembly 200 is connected to the upper ends of the four telescopic columns. At least one of the upper bin plates is set as a flap 201. The pivot end of the flap 201 is rotatably connected to the middle of the soundproof bin. The free end of the flap 201 is detachably connected to the top plate assembly 200 of the upper bin body 2 of the soundproof bin.

[0031] See also Figure 1 , Figure 3 and Figure 6 As shown, in the present embodiment, the free end of the flap 201 is connected with an axially retractable locking pin 3, and the free end of the locking pin 3 can extend out of the end surface of the free end of the flap 201; specifically, in the present embodiment, a hole is provided on the end surface of the upper end of the flap 201, and the free end of the locking pin 3 is clearance-fitted in the hole, and when the locking pin 3 moves axially, it can extend upward or retract downward along the axial direction of the hole; the locking pin 3 is vertically arranged, and a first elastic member (not shown in the figure) is connected to the locking pin 3, and the first elastic member enables the free end of the locking pin 3 to always have a movement tendency to extend upward from the top of the flap 201, and the first elastic member is a spring, and is sleeved on the locking pin 3, and the upper end of the first elastic member is connected to the locking pin 3, and the lower end is connected to the inner wall of the flap 201.

[0032] In other embodiments, the first elastic member may be omitted, and a resistance structure may be provided in the hole for axial movement of the locking pin 3, so that the locking pin 3 can stop at any stroke position, and the locking pin 3 can be manually moved to extend upward or retract downward.

[0033] See again Figure 3 and Figure 5 As shown, in the embodiment of the present application, a stopper is provided on the top plate assembly 200, and the stopper is an extension wall extending downward from the bottom of the top plate assembly 200. When the flap 201 is rotated upward to be in a closed state, the free end of the lock pin 3 is pressed against the outer side wall of the stopper, so that the lock pin 3 can overcome the elastic force of the first elastic member and move downward until the flap 201 is rotated to the closed state, and the lock pin 3 pops out under the elastic force of the first elastic member to return and press against the inner side wall of the stopper to put the free end of the flap 201 in a locked state; therefore, the flap 201 only needs to be rotated to the closed state, so that the lock pin 3 at the free end of the flap 201 can press against the stopper of the top plate assembly 200, and the assembly of the flap 201 can be completed, and the operation is simple and convenient.

[0034] In some embodiments, the flap can also be set on the lower warehouse body, that is, at least one of the lower warehouse plates is set as a flap, the pivot end of the flap is rotatably connected to the middle part of the soundproof warehouse, and the free end of the flap is detachably connected to the bottom plate assembly of the lower warehouse body 1 of the soundproof warehouse. Similarly, an axially retractable locking pin is connected to the free end of the flap, and the free end of the locking pin can extend out of the end surface of the free end of the flap; specifically, in the present embodiment, a hole is provided on the end surface of the lower end of the flap, and the free end of the locking pin is clearance-fitted in the hole. When the locking pin moves axially, it can extend downward or retract upward along the axial direction of the hole; the locking pin is vertically arranged, and a spring (not shown in the figure) is connected to the locking pin, and the spring (makes the free end of the locking pin always have a movement tendency to extend downward out of the end surface of the free end of the flap, and the spring is sleeved on the locking pin, and the lower end of the spring is connected to the locking pin, and the upper end is connected to the inner wall of the flap. Also in the present embodiment, a stopper is provided on the bottom plate assembly, and the stopper is the same as the stopper on the top plate assembly; therefore, the locking pin at the free end of the flap can be abutted against the stopper of the bottom plate assembly by simply rotating the flap to a closed state, and the assembly of the lower bin flap can be completed, which is simple and convenient to operate.

[0035] In the embodiment of the present application, an unlocking mechanism corresponding to the lock pin 3 is connected to the top plate assembly 200, and the unlocking mechanism includes a movable driving block 203, which is used to drive the lock pin 3 to move so that the free end of the lock pin 3 is separated from the stopper, so that the free end of the flap 201 is in an unlocked state. When the soundproof compartment is disassembled or folded, the driving block 203 of the unlocking mechanism can be moved so that the driving block 203 pushes the free end of the lock pin 3 downward. When the free end of the lock pin 3 is separated from the stopper, the free end of the flap 201 is in an unlocked state, so that the flap 201 can be rotated and folded. Therefore, when installing the sound insulation chamber flap 201, it is only necessary to rotate the flap 201 upward to a closed state, and the locking pin 3 will abut against the stop portion to lock the upper end of the flap 201; when folding the flap 201, it is only necessary to move the driving block 203 of the unlocking mechanism to disengage the free end of the locking pin 3 from the stop portion to unlock the free end of the flap 201. Therefore, the flap 201 of the sound insulation chamber flap 201 connection structure can be quickly assembled or disassembled, and the operation is simple and convenient.

[0036] In the examples of this application, see Figure 3 , Figure 5 , Figure 7 and Figure 8As shown, a mounting cavity 202 is provided in the top plate assembly 200, and a slider 204 is slidably matched in the mounting cavity 202 along the vertical direction, and the slider 204 is fixedly connected to the upper end of the driving block 203, so as to make the driving block 203 move synchronously with the slider 204 along the vertical direction; the unlocking mechanism also includes a button 206 movably connected to the top plate assembly 200, and the inner end of the button 206 is connected to the slider 204, so as to drive the slider 204 to slide. The driving button 206 can drive the slider 204 to slide along the vertical direction so as to make the driving block 203 move in the direction close to or away from the lock pin 3. When the driving block 203 moves in the direction close to the lock pin 3, it can overcome the elastic force of the first elastic member downward to make the lock pin 3 move downward so as to be separated from the stopper, so that the free end of the flap 201 is in an unlocked state.

[0037] Furthermore, in this embodiment, a second elastic member 208 is connected to the installation cavity 202. The second elastic member 208 is a vertically arranged spring. The upper end of the second elastic member 208 is connected to the slider 204, and the lower end of the second elastic member 208 is connected to the inner wall of the installation cavity 202, so that the slider 204 always has a tendency to move upward away from the flap 201. The driving button 206 drives the slider 204 to slide in the vertical direction to overcome the elastic force of the second elastic member 208 so that the driving block 203 moves toward the direction close to the lock pin 3. When the button 206 is released, the slider 204 drives the driving block 203 to move away from the lock pin 3 under the elastic force of the second elastic member 208 to facilitate unlocking next time.

[0038] In this embodiment, if Figure 7 and Figure 8 As shown, a vertically arranged guide rod 209 is connected in the installation cavity 202, and the guide rod 209 is a bolt vertically installed in the top plate assembly 200, and the slider 204 is provided with a guide hole 212 slidably mounted on the guide rod 209. The sliding fit between the guide rod 209 and the vertically arranged guide hole 212 on the slider 204 can prevent the slider 204 from sliding and deflecting, and the second elastic member 208 is mounted on the guide rod 209 to keep the second elastic member 208 extended and retracted in the vertical direction, thereby further making the slider 204 slide smoothly and not deflected.

[0039] In other embodiments, a vertical guide groove may be provided in the top plate assembly 200 so that the slider 204 can slide in the guide groove to ensure the smooth sliding of the slider 204 .

[0040] In the embodiments of the present application, Figure 7 and Figure 8As shown, in order to facilitate the user to unlock the flap 201, a button hole 205 for installing the button 206 is provided on the outer wall of the top plate assembly 200; a first inclined surface 207 is provided on the top of the slider 204 near the button 206, and a second inclined surface 210 is provided at the inner end of the button 206 to slide and fit with the first inclined surface 207. The second inclined surface 210 is located on the first inclined surface 207. When the button 206 is pressed, the second inclined surface 210 drives the slider 204 to move in the direction close to the lock pin 3 so that the slider 204 drives the driving block 203 to push the free end of the lock pin 3 downward. The cooperation between the second inclined surface 210 at the inner end of the button 206 and the first inclined surface 207 of the slider 204 can convert the horizontal movement of the button 206 into the vertical movement of the slider 204, so as to realize the movement of the driving block 203. Its structure is simple, and the driving block 203 has good movement stability.

[0041] In the above embodiment, if Figure 7 As shown, the bottom of the stopper near the lock pin 3 is provided with a smoothly transitional arc surface 211. Therefore, after the driving block 203 drives the lock pin 3 to move downward so that the free end of the lock pin 3 just leaves the stopper, since the lock pin 3 always has a tendency to extend, when the flap 201 is rotated, the free end of the lock pin 3 can pass through the arc surface 211 and fold smoothly, avoiding interference caused by rotation, or the free end of the lock pin 3 just leaving the driving block 203 and interfering with the edge of the stopper.

[0042] Similarly, in some embodiments, an unlocking mechanism corresponding to the lock pin is also connected to the bottom plate assembly, and the unlocking mechanism is the same as the unlocking mechanism on the top plate assembly 200, that is, it also includes a movable driving block for driving the lock pin to move so that the free end of the lock pin 3 is separated from the stopper; a mounting cavity is provided in the bottom plate assembly, and a slider is slidably engaged in the mounting cavity along the vertical direction, and the slider is fixedly connected to the lower end of the driving block, so that the driving block moves synchronously with the slider along the vertical direction; the unlocking mechanism also includes a button movably connected to the bottom plate assembly, and the inner end of the button is connected to the slider, so as to drive the slider to slide. In this embodiment, the unlocking mechanism also includes a guide rod vertically arranged in the mounting cavity and a second elastic member sleeved on the guide rod, etc. Its specific connection structure is the same as the unlocking mechanism on the top plate assembly, and this embodiment will not be described in detail.

[0043] See again Figure 1As shown, another embodiment of the present application discloses a soundproof warehouse, which includes a lower warehouse body 1 and an upper warehouse body 2, wherein the upper warehouse body 2 includes a top plate assembly 200, an upper warehouse plate and at least one flap 201, and / or the lower warehouse body 1 includes a bottom plate assembly, a lower warehouse plate and at least one flap; the connection structure of the flap 201 adopts the soundproof warehouse flap connection structure of any of the above embodiments. Therefore, when installing the flap 201, it is only necessary to rotate the flap 201 to a closed state, and the locking pin 3 can abut against the stopper to lock the free end of the flap 201; when folding the flap 201, it is only necessary to move the driving block 203 of the unlocking mechanism to disengage the free end of the locking pin 3 from the stopper to unlock the free end of the flap 201, so that the flap 201 can be quickly assembled or disassembled, and the operation is simple and convenient.

[0044] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0045] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0046] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A soundproofing bin flap connection structure, wherein the pivot end of the flap is rotatably connected to the middle of the soundproofing bin, and the free end of the flap is detachably connected to the top plate assembly of the upper bin body of the soundproofing bin or the bottom plate assembly of the lower bin body of the soundproofing bin; characterized in that: The free end of the flap is connected to an axially retractable locking pin, and the free end of the locking pin can extend out of the end surface of the free end of the flap; a stop portion is provided on the top plate assembly or the bottom plate assembly, and when the flap is rotated to a closed state, the free end of the locking pin abuts against the stop portion to put the free end of the flap in a locked state; an unlocking mechanism corresponding to the locking pin is connected to the top plate assembly or the bottom plate assembly, and the unlocking mechanism includes a movable driving block for driving the locking pin to move so that the free end of the locking pin is disengaged from the stop portion, so that the free end of the flap is in an unlocked state.

2. The soundproof compartment flap connection structure according to claim 1, characterized in that: The locking pin is connected to a first elastic member, and the first elastic member enables the free end of the locking pin to always have a movement tendency to extend out of the end surface of the free end of the flap.

3. The soundproof compartment flap connection structure according to claim 2, characterized in that: An installation cavity is provided in the top plate assembly or the bottom plate assembly, and a slider is slidably engaged in the installation cavity along the vertical direction, and the slider abuts against the end of the driving block to make the driving block move synchronously with the slider; the unlocking mechanism also includes a button movably connected to the top plate assembly or the bottom plate assembly, and the inner end of the button is connected to the slider to drive the slider to slide.

4. The soundproof compartment flap connection structure according to claim 3, characterized in that: A second elastic member is connected to the installation cavity, one end of the second elastic member is connected to the slider, and the other end of the second elastic member is connected to the inner wall of the installation cavity, so that the slider always has a movement tendency away from the flap.

5. The soundproof compartment flap connection structure according to claim 4, characterized in that: A vertically arranged guide rod is connected in the installation cavity, and the sliding block is provided with a guide hole which is slidably sleeved on the guide rod; and the second elastic member is sleeved on the guide rod.

6. The soundproof compartment flap connection structure according to claim 4, characterized in that: A button hole for installing the button is provided on the side wall of the top plate assembly; a first inclined surface is provided on the top of the slider close to the button, and a second inclined surface is provided at the inner end of the button to slide in contact with the first inclined surface. When the button is pressed, the second inclined surface drives the slider to move in a direction close to the locking pin.

7. The soundproof compartment flap connection structure according to claim 1, characterized in that: The bottom of the stopper portion close to the locking pin is provided with a smoothly transitional arc surface.

8. A soundproof chamber, comprising a lower chamber body and an upper chamber body, wherein the upper chamber body comprises a top plate assembly, an upper chamber plate and at least one flap, and / or the lower chamber body comprises a bottom plate assembly, a lower chamber plate and at least one flap, characterized in that: The flap connection structure adopts the sound insulation chamber flap connection structure described in any one of claims 1 to 7 above.

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