Shell assembly and audio-video equipment

Abstract

The utility model relates to the technical field of audio and video devices, and discloses a shell assembly and audio and video equipment. The housing assembly includes a housing, a speaker, and a guide. The shell comprises a mounting cavity with an opening, the mounting cavity is used for mounting the loudspeaker, and the opening is used for conducting sound of the loudspeaker to the external environment. The guide piece is arranged at the opening of the shell, and the guide piece is rotationally connected with the shell and can rotate relative to the shell so as to adjust the angle between the guide piece and the plane where the opening is located, and therefore the sound wave guiding-out direction can be adjusted. By adopting the shell assembly provided by the invention, the sound emitted by the loudspeaker is transmitted out through the opening, and the sound wave is guided by utilizing the guide piece, so that the sound emitting angle is restrained, and the transmission direction of the sound wave is corrected. And according to the space structure of the external environment and the position of the listener, the conduction direction of sound transmission can be further corrected by rotating the opening and closing angle of the guide piece, and the sound effect of the listener on the transmitted sound is optimized and enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of audio-visual devices, for example to a shell assembly and an audio-visual device. BACKGROUND

[0002] In the related art, the sound outlet of the sky channel of the television machine is directed upward, the sound of the sound box of the sky channel is emitted upward, there is no special angle constraint, the sound waves are emitted in multiple directions, are affected by the space structure, and are affected by multiple reflections and phases, causing the sky channel sound waves to be chaotic, there are phase differences and reverberation time delays caused by multiple-angle multiple reflections, affecting the sky channel effect, and further affecting the use experience of the audio-visual person. CONTENT OF THE UTILITY MODEL

[0003] In order to have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not a general review, nor is it intended to determine key / important components or delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0004] The shell assembly and the audio-visual device provided by the embodiments of the present disclosure can improve the use experience of the audio-visual person.

[0005] In some embodiments, a shell assembly is provided, comprising: a shell comprising a mounting cavity with an opening; a loudspeaker arranged in the mounting cavity; a guide member rotationally connected with the shell and located at the opening of the mounting cavity; wherein the guide member is capable of rotating relative to the shell to adjust the angle between the guide member and the plane where the opening is located.

[0006] Optionally, the guide member comprises: a guide plate, both ends of the guide plate are provided with rotating shafts, and the guide plate is rotationally connected with the shell through the rotating shafts at both ends.

[0007] Optionally, the guide member further comprises: a sound guide plate, one end of the sound guide plate is connected with the guide plate, and an included angle is formed between the guide plate and the sound guide plate; wherein the sound guide plate is located at the opening in the case where the guide plate is in an opening opening state.

[0008] Optionally, the sound guide plate comprises a plurality of through holes, and the plurality of through holes communicate the mounting cavity of the shell and the external space; the guide plate is a flat plate structure, and the flat plate structure is used to guide the sound waves emitted from the opening.

[0009] Optionally, the shell assembly further comprises: a driving member arranged in the shell, an output end of the driving member is connected with the guide member, and the driving member is used to drive the guide member to rotate relative to the shell to adjust the angle between the guide member and the plane where the opening is located.

[0010] Optionally, the driving member comprises: a linear module, an output end of the linear module is connected with the guide member.

[0011] Optionally, the driving member comprises: a motor arranged in the shell; a transmission mechanism, an input end of the transmission mechanism being connected with an output shaft of the motor, and an output end of the transmission mechanism being connected with the guide member.

[0012] Optionally, the transmission mechanism comprises: a gear sleeved on the output shaft of the motor; a rack arranged in the shell and capable of sliding along the shell, the rack being engaged with the gear, and an end of the rack being connected with the guide member.

[0013] Optionally, the shell further comprises: a sound channel structure, one end of the sound channel structure being arranged correspondingly to the loudspeaker, and the other end of the sound channel structure being arranged correspondingly to the opening.

[0014] In some embodiments, an audio-visual device is provided, comprising a device main body; and the shell assembly according to any one of the above technical solutions, the shell assembly being connected with the device main body.

[0015] The shell assembly and the audio-visual device provided by the embodiments of the present disclosure can achieve the following technical effects:

[0016] The shell assembly provided by the present disclosure comprises a shell, a loudspeaker and a guide member. The shell comprises a mounting cavity with an opening, the mounting cavity being used for mounting the loudspeaker, and the opening being used for conducting sound of the loudspeaker to an external environment. The guide member is arranged at the opening of the shell and is rotationally connected with the shell, and can rotate relative to the shell to adjust an angle between the guide member and a plane where the opening is located, thereby adjusting a direction of sound wave export.

[0017] By adopting the shell assembly provided by the present disclosure, the guide member is arranged to be rotatable relative to the shell, and the guide member is driven to rotate to adjust the angle between the guide member and the plane where the opening is located. In this way, sound emitted by the loudspeaker is transmitted out through the opening and guided by the guide member, thereby restricting the sound emission angle and correcting the transmission direction of the sound wave. Furthermore, the transmission direction of the sound transmission can be further corrected by rotating the opening angle of the guide member according to the spatial structure of the external environment and the position of the listener, so as to optimize and enhance the sound effect of the transmitted sound for the listener.

[0018] The foregoing general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitation on the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute proportional limitation, and wherein:

[0020] Figure 1 is a structural schematic diagram of the shell assembly provided by one embodiment of the present disclosure;

[0021] Figure 2 is Figure 1 is a structural schematic diagram of another view of the shell assembly provided by the embodiment shown in FIG. 1;

[0022] Figure 3 is Figure 1 is a structural schematic diagram of another view of the shell assembly provided by the embodiment shown in FIG. 1;

[0023] Figure 4 is a structural schematic diagram of the guide provided by another embodiment of the present disclosure;

[0024] Figure 5 is a structural schematic diagram of the audio-video device provided by one embodiment of the present disclosure;

[0025] Figure 6 is a schematic diagram of an application scenario of a television in the related art;

[0026] Figure 7 is a schematic diagram of an application scenario of a television provided by an embodiment of the present disclosure.

[0027] Reference signs in the related art:

[0028] 3’ television.

[0029] Reference signs of embodiments of the present disclosure:

[0030] 10 shell assembly;

[0031] 110 shell;

[0032] 120 guide; 121 guide plate; 122 sound guide plate; 123 through hole; 124 rotating shaft;

[0033] 130 driving member;

[0034] 2 audio-video device; 20 device main body;

[0035] 3 television. DETAILED DESCRIPTION

[0036] In order to enable persons skilled in the art to better understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0037] The terms "first", "second", and the like in the description and in the claims of the embodiments of the present disclosure and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0038] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0039] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0040] Unless otherwise specified, the term "a plurality of" means two or more.

[0041] In the embodiments of the present disclosure, the character " / " represents a "or" relationship between the objects before and after it. For example, A / B means: A or B.

[0042] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0043] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0044] In some embodiments, in combination with Figure 1 and Figure 2As shown, a housing assembly 10 is provided, comprising: a housing 110 comprising a mounting cavity having an opening. A speaker is arranged in the mounting cavity. A guide 120 is rotatably connected with the housing 110 and located at the opening of the mounting cavity. The guide 120 is rotatable relative to the housing 110 to adjust the angle between the guide 120 and the plane where the opening is located.

[0045] The housing assembly 10 provided by the present disclosure comprises the housing 110, the speaker and the guide 120. The housing 110 comprises a mounting cavity having an opening, the mounting cavity is used for mounting the speaker, and the opening is used for conducting the sound of the speaker to the external environment. The guide 120 is arranged at the opening of the housing 110 and is rotatably connected with the housing 110, and the guide 120 is rotatable relative to the housing 110 to adjust the angle between the guide 120 and the plane where the opening is located, thereby adjusting the direction of the sound wave.

[0046] By adopting the housing assembly 10 provided by the present disclosure, the guide 120 is rotatable relative to the housing 110, and the guide 120 is driven to rotate to adjust the angle between the guide 120 and the plane where the opening is located. In this way, the sound emitted by the speaker is transmitted out through the opening and guided by the guide 120, thereby achieving the purpose of restricting the sound emission angle and correcting the transmission direction of the sound wave. Furthermore, according to the spatial structure of the external environment and the position of the listener, the opening angle of the guide 120 can be adjusted to further correct the transmission direction of the sound transmission, thereby optimizing and enhancing the sound effect of the sound transmission for the listener.

[0047] Optionally, the included angle between the guide 120 and the plane where the opening is located is greater than or equal to 0° and less than or equal to 90°. The specific value of the included angle between the guide 120 and the plane where the opening is located includes but is not limited to 15°, 30°, 45°, 60° or 75°.

[0048] Optionally, in combination with Figure 1 and Figure 2 , Figure 3 As shown, the guide 120 comprises a guide plate 121. The guide plate 121 is rotatably connected with the housing 110 through the rotation shafts 124 at both ends of the guide plate 121.

[0049] In this embodiment, the guide 120 adopts the guide plate 121, and the guide plate 121 is rotatably connected with the housing 110 through the rotation shafts 124 at both ends of the guide plate 121. In this way, the guide plate 121 can be driven to rotate relative to the housing 110 to adjust the angle between the guide plate 121 and the plane where the opening is located, thereby adjusting the angle and direction of the transmitted sound wave.

[0050] Optionally, in combination with Figure 4As shown, the guide 120 further comprises a sound guide plate 122. One end of the sound guide plate 122 is connected with the guide plate 121, and an included angle is formed between the guide plate 121 and the sound guide plate 122. When the guide plate 121 is in the open state, the sound guide plate 122 is located at the opening.

[0051] In this embodiment, the guide 120 comprises the guide plate 121 and the sound guide plate 122, and one end of the guide plate 121 and the sound guide plate 122 is connected and forms an included angle structure. By setting the guide plate 121 and the sound guide plate 122 as an included angle structure, the vertex connection of the included angle structure is the rotating shaft 124, and then the relative position of the guide plate 121 and the sound guide plate 122 with the opening is switched by driving the included angle structure to rotate. When the guide plate 121 is located at the opening, the opening is closed. When the sound guide plate 122 is located at the opening, the guide plate 121 is located outside the mounting cavity, and the guide plate 121 has a certain angle with the opening, thereby playing a guiding role for the sound waves emitted through the sound guide plate 122, and at this time the sound guide plate 122 is located at the opening, which can realize sound propagation, and at the same time, can prevent external debris from entering the mounting cavity.

[0052] Optionally, in combination with Figure 4 As shown, the sound guide plate 122 comprises a plurality of through holes 123, and the plurality of through holes 123 communicate the mounting cavity of the shell 110 with the external space. The guide plate 121 is a flat plate structure, which is used to guide the sound waves emitted from the opening.

[0053] In this embodiment, the sound guide plate 122 is provided with a plurality of through holes 123, which are used to realize the propagation of sound to the outside. In addition, through the plurality of through holes 123, the external debris can also be filtered. The guide plate 121 adopts a flat plate structure, which can improve the guiding effect of sound waves.

[0054] Optionally, in combination with Figure 1 and Figure 2 , Figure 3 As shown, the shell assembly 10 further comprises a driving member 130. The driving member 130 is arranged on the shell 110, and the output end of the driving member 130 is connected with the guide 120. The driving member 130 is used to drive the guide 120 to rotate relative to the shell 110, so as to adjust the angle between the guide 120 and the plane where the opening is located.

[0055] In this embodiment, by arranging the driving member 130, the guide 120 is driven to rotate relative to the shell 110, so as to adjust the angle of the included angle between the guide 120 and the plane where the opening is located, so as to meet the guiding requirement and improve the sound effect of the sky sound.

[0056] In some embodiments, the driving member 130 comprises a linear module. The output end of the linear module is connected with the guide 120.

[0057] In this embodiment, the linear module is used to drive the guide 120 to rotate relative to the shell 110. The linear module is arranged in the mounting cavity, and the output end of the linear module is connected with the guide 120, so as to drive the guide 120 to rotate towards the outside of the shell 110 to open the opening, and to form a certain angle with the plane where the opening is located, so as to adjust the propagation direction of the sound wave. When the guide is not needed, the linear module drives the guide 120 to rotate towards the inside of the shell 110 to close the opening.

[0058] The rotation angle of the guide 120 can be set according to the actual application scene, and the operation parameters of the linear module are set. In this way, the rotation angle of the guide 120 can be automatically controlled. Specifically, the rotation position of the guide 120 is set to be multiple, that is, corresponding to multiple rotation angles, and the operation parameters of the linear module are set corresponding to the multiple rotation angles, so that the included angle between the guide 120 and the plane where the opening is located can be selected by controlling the linear module, so as to adjust the transmission direction of the sound wave.

[0059] In one example, the guide 120 includes a guide plate 121, and the driving member 130 is a linear module.

[0060] In this example, the linear module is arranged in the mounting cavity, and the output end of the linear module is connected with the guide plate 121. The linear module can drive the guide plate 121 to rotate reciprocatingly around the rotation shaft 124, so as to adjust the included angle between the guide plate 121 and the plane where the opening is located, thereby realizing the constraint of the sound outlet, correcting the transmission direction of the sound wave, reducing the refraction of the sound wave by the environment structure, improving the sound effect, and improving the user experience.

[0061] In one example, the guide 120 includes a guide plate 121, and the driving member 130 includes a motor.

[0062] In this example, the two ends of the guide plate 121 are respectively provided with rotation shafts 124 which rotate relative to the shell 110. The output end of the motor is connected with the rotation shaft 124 at one side of the guide plate 121, and the guide plate 121 is driven by the motor to rotate forward or reverse, so as to adjust the included angle between the guide plate 121 and the plane where the opening is located.

[0063] In one example, the guide 120 includes a guide plate 121 and a sound guide plate 122, and the driving member 130 is a motor.

[0064] In this example, the guide plate 121 and the sound guide plate 122 are configured as a clamped angle structure. The two ends of the connection of the guide plate 121 and the sound guide plate 122 are respectively provided with a rotating shaft 124, which is rotatably connected with the shell 110 through the rotating shaft 124. The output end of the motor is connected with the rotating shaft 124, and the clamped angle structure is driven to rotate relative to the shell 110 by the motor to switch the relative position of the guide plate 121 and the sound guide plate 122 with the opening.

[0065] In some embodiments, the driving member 130 includes a motor and a transmission mechanism. The motor is arranged in the shell 110. The input end of the transmission mechanism is connected with the output shaft of the motor, and the output end of the transmission mechanism is connected with the guide member 120.

[0066] In this embodiment, the driving member 130 adopts a motor and a transmission mechanism. The motor serves as a power source to drive the transmission mechanism to move, so as to drive the guide member 120 to reciprocatingly rotate relative to the shell 110, and then adjust the included angle between the guide member 120 and the plane where the opening is located, so as to guide the direction of the output sound wave and improve the sound effect of the loudspeaker.

[0067] Optionally, the transmission mechanism includes a gear and a rack. The gear is sleeved on the output shaft of the motor. The rack is arranged in the shell 110 and can slide along the shell 110. The rack is engaged with the gear, and the end of the rack is connected with the guide member 120.

[0068] In this embodiment, the gear is arranged on the output shaft of the motor. The rack is arranged in the shell 110 and can slide relative to the shell 110. The gear and the rack are engaged. The end of the rack is connected with the guide member 120. The motor operates to drive the gear to rotate, the gear drives the rack to slide relative to the shell 110, and then drives the guide member 120 to rotate relative to the shell 110, so as to adjust the included angle between the guide member 120 and the plane where the opening is located.

[0069] Optionally, the inner wall of the shell 110 is provided with a sliding groove, and the rack is installed in the sliding groove and can reciprocatingly slide relative to the sliding groove. The sliding groove is arranged to guide and limit the rack.

[0070] In an example, the guide member 120 includes a guide plate 121, and the driving member 130 includes a motor and a transmission mechanism. The transmission mechanism includes a gear and a rack. The end of the rack is rotatably connected with the guide plate 121, the gear is arranged on the output shaft of the motor, and the gear and the rack are engaged. The rack is arranged in the sliding groove of the shell 110 and can slide relative to the sliding groove. The motor drives the gear to rotate, and then drives the rack to reciprocatingly slide along the sliding groove, and then drives the guide plate 121 to rotate relative to the shell 110, so as to adjust the angle between the guide plate 121 and the plane where the opening is located, so as to improve the sound effect of the loudspeaker and improve the user experience.

[0071] Optionally, the shell 110 further comprises a sound channel structure. One end of the sound channel structure is arranged corresponding to the speaker, and the other end of the sound channel structure is arranged corresponding to the opening.

[0072] In this embodiment, the sound channel structure is arranged in the shell 110 and is used to conduct the sound waves emitted by the speaker. One end of the sound channel structure is arranged corresponding to the speaker, and the other end of the sound channel structure is arranged corresponding to the opening. The sound waves emitted by the speaker are conducted to the user side through the cooperation of the sound channel structure and the guide piece 120, the refraction effect caused by the external space structure on the sound wave transmission is reduced, the sound effect is improved, and the user experience is improved.

[0073] In some embodiments, in combination with Figure 5 As shown, an audio-visual device 2 is provided, which comprises a device body 20 and a shell assembly 10 as described in any of the above technical solutions.

[0074] The audio-visual device 2 provided by the present disclosure comprises a device body 20 and a shell assembly 10 of any of the above embodiments. The shell assembly 10 is arranged on the device body 20. The shell assembly 10 comprises a shell 110, a speaker, and a guide piece 120. The shell 110 comprises a mounting cavity with an opening, the mounting cavity is used to mount the speaker, and the opening is used to conduct the sound of the speaker to the external environment. The guide piece 120 is arranged at the opening of the shell 110 and is rotationally connected with the shell 110, and can rotate relative to the shell 110 to adjust the angle between the guide piece 120 and the plane where the opening is located, thereby adjusting the direction of the sound wave. By adopting the shell assembly 10 provided by the present disclosure, the guide piece 120 is arranged to be rotatable relative to the shell 110, and the guide piece 120 is driven to rotate to adjust the angle between the guide piece 120 and the plane where the opening is located. In this way, the sound emitted by the speaker is transmitted through the opening, and the sound wave is guided by the guide piece 120, thereby restricting the sound emission angle and correcting the transmission direction of the sound wave. According to the space structure of the external environment and the position of the listener, the opening angle of the guide piece 120 is further adjusted to correct the transmission direction of the sound transmission, and the sound effect of the listener to the transmitted sound is optimized and enhanced.

[0075] Optionally, the audio-visual device 2 comprises a television set 3 or a sound equipment.

[0076] Taking the case that the television set 3 is installed in a room as an example, after the television set 3 is installed, the back of the television set 3 is a wall, and the top corresponds to the roof.

[0077] If the sound channel structure of the related art television set 3' is adopted, in combination with Figure 6As shown (the arrow in the figure shows the sound wave propagation direction), the sky channel loudspeaker sound is emitted upward, and due to the influence of the space environment, there are multiple reflections and phase effects, causing the sky channel sound wave to be chaotic, and there are phase differences and reverberation time delays caused by multiple reflections, affecting the sky channel effect.

[0078] And the television 3 using the shell assembly 10 provided by the present disclosure, in combination with Figure 7 As shown (the arrow in the figure shows the sound wave propagation direction), by rotating the guide plate 121 to a preset angle, the preset angle can be set according to the actual application scene, or can be determined according to the actual application scene and adjusted. Using the guide 120, the sound is guided by the guide 120, and the sound angle is constrained, and the transmission direction of the sound wave is corrected. And according to the height of the roof and the position of the listener, by rotating the opening angle of the guide 120, the transmission direction of the output sound can be further corrected, and the effect of the listener on the sky channel sound effect can be optimized and enhanced.

[0079] The above description and drawings sufficiently show the embodiments of the present disclosure to enable one skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments represent only a few of the possible variations. Individual components and functions are optional unless specifically required, and the order of operations can be changed. Parts and features of some embodiments can be included or replaced by parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A housing assembly, characterized by, The shell assembly comprises: a shell comprising a mounting cavity with an opening; a loudspeaker arranged in the mounting cavity; a guide member rotatably connected to the shell and located at the opening of the mounting cavity; wherein the guide member is rotatable relative to the shell to adjust the angle between the guide member and the plane of the opening.

2. The housing assembly of claim 1, wherein, The guide member comprises: a guide plate, both ends of the guide plate being provided with rotating shafts, the guide plate being rotatably connected to the shell through the rotating shafts at both ends.

3. The housing assembly of claim 2, wherein, The guide member further comprises: a sound guide plate, one end of the sound guide plate being connected to the guide plate, and an included angle being formed between the guide plate and the sound guide plate; wherein the sound guide plate is located at the opening when the guide plate is in the open opening state.

4. The shell assembly according to claim 3, wherein the sound guide plate comprises a plurality of through holes, the plurality of through holes being in communication with the mounting cavity of the shell and an external space; the guide plate is a flat plate structure, the flat plate structure being used to guide the sound waves emitted from the opening.

5. The housing assembly of any one of claims 1 to 4, wherein, The shell assembly further comprises: a driving member arranged in the shell, an output end of the driving member being connected to the guide member, the driving member being used to drive the guide member to rotate relative to the shell to adjust the angle between the guide member and the plane of the opening.

6. The housing assembly of claim 5, wherein, The driving member comprises: a linear module, an output end of the linear module being connected to the guide member.

7. The housing assembly of claim 5, wherein the drive member The shell assembly comprises: a motor arranged in the shell; a transmission mechanism, an input end of the transmission mechanism being connected to an output shaft of the motor, an output end of the transmission mechanism being connected to the guide member.

8. The housing assembly of claim 7, wherein, The transmission mechanism comprises: a gear, the gear being sleeved on the output shaft of the motor; a rack, the rack being arranged in the shell and being capable of sliding along the shell, the rack being engaged with the gear, an end of the rack being connected to the guide member.

9. The housing assembly of any one of claims 1 to 4, wherein, The shell further comprises: an acoustic channel structure, one end of the acoustic channel structure being correspondingly arranged with the loudspeaker, the other end of the acoustic channel structure being correspondingly arranged with the opening.

10. An audio-visual apparatus, characterized by comprising: The shell assembly comprises: a device main body; and the shell assembly according to any one of claims 1 to 9, the shell assembly being connected to the device main body. ​

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