Security and protection equipment

Abstract

The invention discloses security and protection equipment. The security and protection equipment comprises a first shell, a second shell and a loudspeaker, the first shell and the second shell are connected and define an accommodating cavity and a first sound cavity which are arranged in parallel, the second shell is provided with a sound outlet hole, and the sound outlet hole is communicated with the first sound cavity; a containing cavity is formed in the first shell, a second sound cavity is formed in the first shell, the loudspeaker is located in the containing cavity and arranged on the first shell, and the second sound cavity is communicated with the loudspeaker; the first sound cavity is communicated with the second sound cavity to form a front sound cavity of the loudspeaker. According to the scheme, space stacking in the security and protection equipment can be optimized, and function implementation and appearance lightening and thinning of the whole security and protection equipment are facilitated.

Description

Technical Field

[0001] The present invention relates to the field of security technology, and in particular to a security device. Background Art

[0002] Security equipment refers to safety equipment. Security equipment has a variety of application functions, such as monitoring, access control, alarm, etc. Security equipment is a general term for video surveillance, anti-theft alarm, access control intercom, intelligent transportation, police equipment, etc. Security equipment is usually equipped with speakers, which can realize functions such as audio playback and intercom call speaker.

[0003] In the related art, a front sound cavity and a sound outlet hole connected to the front sound cavity are provided on the front shell or the rear shell of the security device, and a speaker is fixed on the front shell or the rear shell and connected to the front sound cavity. At this time, the sound emitted by the speaker passes through the front sound cavity and then is output to the outside of the security device through the sound outlet hole.

[0004] However, the speakers, front sound chambers and sound outlets are all stacked on the front shell or rear shell of the security equipment, which occupies a larger shell space. This is not conducive to the internal space stacking of the security equipment and the realization of the functions of the whole machine, and is therefore not conducive to the development of lightweight security equipment. Summary of the invention

[0005] The invention discloses a security device, which is beneficial to optimizing the internal space stacking of the security device, and is beneficial to realizing the functions of the entire device and making the appearance of the security device thin and light.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions:

[0007] A security device comprises a first housing, a second housing and a speaker;

[0008] The first shell and the second shell are connected to form a accommodating cavity and a first sound cavity arranged in parallel. The second shell is provided with a sound outlet hole, and the sound outlet hole is communicated with the first sound cavity; the first shell is provided with a second sound cavity, the speaker is located in the accommodating cavity and is arranged on the first shell, and the second sound cavity is communicated with the speaker; the first sound cavity is communicated with the second sound cavity to form a front sound cavity of the speaker.

[0009] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0010] In the security equipment disclosed in the present invention, the first shell and the second shell form a first sound cavity, and the second shell is provided with a sound outlet, which is connected to the first sound cavity. The speaker is arranged on the first shell and is connected to the second sound cavity arranged on the first shell. The first sound cavity and the second sound cavity on the first shell together form a front sound cavity of the speaker. In this scheme, a part of the front sound cavity can be formed between the first shell and the second shell, and the sound outlet and the speaker are dispersedly arranged on different shells, thereby avoiding the stacking arrangement of the speaker, the front sound cavity and the sound outlet on the same shell, which is conducive to reducing the volume of the first shell and the second shell, and thus further conducive to reducing the volume of the security equipment to achieve the lightweight development of the security equipment. At the same time, the sound outlet and the speaker are dispersedly arranged on different shells, and the surrounding position of the sound outlet is vacant, which is more conducive to optimizing the internal space stacking of the security equipment and the functional realization of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0012] Figure 1 A schematic diagram of the structure of a security device disclosed in an embodiment of the present invention;

[0013] Figure 2 An exploded diagram of a security device disclosed in an embodiment of the present invention;

[0014] Figure 3 A partial schematic diagram of a security device disclosed in an embodiment of the present invention;

[0015] Figure 4 A cross-sectional view of a security device disclosed in an embodiment of the present invention;

[0016] Figures 5 to 9 It is a structural schematic diagram of a first housing of a security device disclosed in an embodiment of the present invention;

[0017] Fig.10 and Fig.11 It is a schematic structural diagram of the second shell of the security device disclosed in an embodiment of the present invention.

[0018] Description of reference numerals:

[0019] 100-first shell, 101-second sound cavity, 101a-cavity, 101b-connecting channel, 101b1-first connecting section, 101b2-second connecting section, 102-first accommodating groove, 103-first recess, 110-first annular side wall, 111-annular wall, 1111-annular substrate, 1112-first protrusion, 112-annular flange, 1121-flange body, 1122-second protrusion, 113-first extension protrusion, 114-second extension protrusion, 1141-first strip segment, 1142-second strip segment, 1143-third strip segment, 120-first cover plate, 130-protrusion;

[0020] 200-second housing, 201-sound outlet, 202-second receiving groove, 203-second recess, 210-second annular side wall, 220-second cover plate, 230-extended baffle, 231-first plate body, 232-second plate body, 233-third plate body, 240-sealing protrusion, 250-positioning protrusion;

[0021] 300-speaker;

[0022] 410 - accommodating cavity, 420 - first sound cavity;

[0023] 500-sealing ring, 510-positioning notch, 520-annular sealing groove. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] In the related art, the device housing of the security equipment usually includes a front housing and a rear housing. Due to the installation requirements, the rear housing usually needs to be installed in a base or a wall. Then, according to the relevant sound output requirements, the sound outlet needs to be set on the front housing, so the speaker and the corresponding front sound cavity are also set on the front housing, which is bound to occupy a larger front housing space. Therefore, in order to meet the installation requirements of the front housing, the volume of the front housing needs to be set larger, resulting in a larger volume of the security equipment.

[0026] Similarly, if the corresponding back shell has a sound output requirement, the speaker and the corresponding sound cavity are also arranged on the back shell body. At this time, in order to meet the installation requirements of the back shell, the volume of the back shell needs to be set larger, which makes the volume of the security equipment larger.

[0027] In addition, the space around the sound hole is occupied by the front sound cavity and the speaker, which makes it difficult to arrange other devices around the sound hole, which is not conducive to the internal space stacking of the security equipment and affects the function realization of the whole machine. This problem will further increase the size of the security equipment.

[0028] Therefore, the security equipment in the related technical solutions has the problem of being large in size, which is not conducive to the lightweight development of the security equipment.

[0029] The technical solutions disclosed in various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] like Figures 1 to 11 As shown, an embodiment of the present invention discloses a security device, which includes a first shell 100 , a second shell 200 and a speaker 300 .

[0031] The first shell 100 and the second shell 200 are connected. Here, the first shell 100 and the second shell 200 constitute the device shell of the security device. The device shell is the installation base of the security device and is used to install other components of the security device. For example, components such as a circuit board and a camera of the security device can be installed in the space surrounded by the first shell 100 and the second shell 200. Here, one of the first shell 100 and the second shell 200 can be a front shell, and the other can be a rear shell.

[0032] Specifically, the first shell 100 and the second shell 200 enclose a holding cavity 410 and a first sound cavity 420 arranged in parallel. The holding cavity 410 here is used to hold other components of the security equipment. For example, components such as the speaker 300, the camera, and the circuit board. The first sound cavity 420 here is used to transmit the audio signal of the speaker 300. In order to prevent the audio signal from being transmitted into the holding cavity 410, the first sound cavity 420 and the holding cavity 410 can be isolated from each other, that is, the first sound cavity 420 and the holding cavity 410 are not connected.

[0033] In the embodiment of the present application, a sound hole 201 is opened on the second shell 200, and the sound hole 201 is connected with the first sound cavity 420. The sound hole 201 here is used to connect the first sound cavity 420 and the external space. The sound hole 201 transmits the audio signal inside the device shell to the external space to realize the transmission of sound.

[0034] A second sound cavity 101 may be provided on the first shell 100, the speaker 300 is located in the accommodating cavity 410 and is arranged on the first shell 100, the second sound cavity 101 is connected to the speaker 300, and the first sound cavity 420 is connected to the second sound cavity 101 to form a front sound cavity of the speaker 300. In the specific audio transmission process, the audio signal generated by the speaker 300 is transmitted from the second sound cavity 101 to the first sound cavity 420, and then transmitted to the external space through the sound outlet 201. It can be understood here that the sound cavity on the side facing the diaphragm of the speaker 300 is the front sound cavity. The specific structure and principle of the speaker 300 are well-known technologies and will not be elaborated in this article.

[0035] In the embodiments disclosed in the present application, a partial front sound cavity can be formed between the first shell 100 and the second shell 200, and the sound hole 201 and the speaker 300 are dispersedly arranged on different shells, thereby avoiding the stacking of the speaker 300, the front sound cavity and the sound hole 201 on the same shell, which is beneficial to reducing the volume of the first shell 100 and the second shell 200, and is further beneficial to reducing the volume of the security equipment, so as to achieve the lightweight development of the security equipment.

[0036] In an optional solution, the first shell 100 can be a rear shell, the second shell 200 can be a front shell, and the security device can be a front shell sound output solution. At this time, the sound outlet 201 is located on the second shell 200, and the speaker 300 and the second sound cavity 101 are arranged on the rear shell. At this time, the position around the sound outlet 201 on the front shell does not need to stack the speaker 300 and the sound cavity, so that this part of the space is reserved, and this part of the space can be used to set other functional devices, so there is no need to increase the volume of the front shell. The sound cavity set on the rear shell is connected to the sound cavity formed by splicing the front shell and the rear shell together to achieve communication with the sound outlet 201. Here, the first sound cavity 420 is used to realize the transfer of the second sound cavity 101 and the sound outlet 201. At this time, the speaker 300 is installed using part of the space of the rear shell to save the space originally used for setting the speaker 300 on the front shell, thereby meeting the assembly requirements of the front shell, and there is no need to increase the volume of the front shell. Therefore, the sound outlet 201 and the speaker 300 are dispersedly arranged on different shells, and the surrounding position of the sound outlet 201 is vacant, and other devices can be arranged in the vacant position, which is more conducive to optimizing the internal space stacking of the security equipment and the functional realization of the whole machine. In addition, while optimizing the internal space stacking of the security equipment and the functional realization of the whole machine, this solution will not increase the volume of the whole machine of the security equipment, so the solution disclosed in this application is more conducive to the development of lightweight and thin security equipment.

[0037] Similarly, when the rear shell needs to produce sound, the front shell can be used to assist in installing the speaker 300, thereby saving the original space on the rear shell, thereby meeting the assembly requirements of the rear shell without increasing the volume of the rear shell.

[0038] In addition, a part of the front sound cavity can be enclosed between the first shell 100 and the second shell 200, and another part of the front sound cavity can be formed on the first shell 100. In this case, the front sound cavity is formed by splicing the two parts. Compared with the solution of setting the front sound cavity on a single shell in the related art, the spliced ​​front sound cavity solution disclosed in the present application has a smaller volume of the sound cavity set on a single shell when the volume of the front sound cavity is the same, thereby reducing the volume of the single shell, which is beneficial to reducing the overall volume of the security equipment, so as to further realize the lightweight development of the security equipment.

[0039] In addition, the spliced ​​front sound cavity solution disclosed in the present application fully utilizes the internal space between the first shell 100 and the second shell 200. Therefore, the spliced ​​front sound cavity structure disclosed in the present application can further reduce the manufacturing cost of the security equipment and further simplify the assembly process.

[0040] In the above embodiment, the first housing 100 can be connected to the outer shell of the speaker 300 by mechanical connection means such as screws and buckles.

[0041] In another optional embodiment, the width of the sound outlet hole 201 is not less than 2.5 mm. The width of the sound outlet hole 201 here is the size shown by W in 3 .

[0042] In an optional solution, the first sound cavity 420 can be a hole-shaped structure, and the speaker 300 can be arranged at the edge of the first hole on one side of the hole-shaped structure. In this case, the outer shell of the speaker 300 can be sealed and connected to the edge of the first hole of the hole-shaped structure, and the side where the diaphragm of the speaker 300 is located faces the second hole of the hole-shaped structure, and the second hole is connected to the second sound cavity 101.

[0043] In another optional solution, the second sound cavity 101 may include a cavity 101a and a connecting channel 101b, the cavity 101a has an opening, and the speaker 300 may be sealed and connected to the edge of the opening of the cavity 101a. In this case, the housing of the speaker 300 may be connected to the cavity 101a through the first end of the connecting channel 101b, where the first end of the connecting channel 101b may directly penetrate the inner wall of the cavity 101a, or a through hole may be provided on the inner wall of the cavity 101a, and the cavity 101a may be connected to the first end of the connecting channel 101b through the through hole. The second end of the connecting channel 101b may be connected to the first sound cavity 420, and in this case, the second end of the connecting channel 101b may directly penetrate the surface of the first housing 100, so that the connecting channel 101b is connected to the first sound cavity 420.

[0044] In this solution, the second sound cavity 101 includes a cavity 101a and a connecting channel 101b that are connected in sequence, so that the path of the second sound cavity 101 can be made longer. Therefore, when dust and water vapor in the environment enter the second sound cavity 101, due to the longer path of the second sound cavity 101, the dust and water vapor can settle on the inner walls of the cavity 101a and the connecting channel 101b, and are not easily adsorbed on the diaphragm of the speaker 300, thereby avoiding the influence on the acoustic performance of the speaker 300. Therefore, the second sound cavity 101 of this structure is more conducive to improving the acoustic performance of the speaker 300.

[0045] Further, the first end of the connecting channel 101b is located at an end away from the opening of the cavity 101a. At this time, the communication position between the first end of the connecting channel 101b and the cavity 101a is far away from the opening of the cavity 101a. Specifically, one end of the cavity 101a is a closed end, and the other end has the above-mentioned opening. The closed end here means that the end position is blocked. The communication position between the first end of the connecting channel 101b and the cavity 101a is set close to the closed end. It can be understood here that the through hole formed between the side wall of the cavity 101a and its closed end is the first end of the connecting channel 101b. Alternatively, the through hole formed between the side wall of the cavity 101a and its closed end is connected to the first end of the connecting channel 101b. The opening of the cavity 101a faces the second shell 200, and the second end of the connecting channel 101b passes through the surface of the first shell 100 facing the second shell 200, and the opening of the cavity 101a is arranged in parallel with the second end of the connecting channel 101b. At this time, the second end of the connecting channel 101b is close to the opening of the cavity 101a.

[0046] During the specific audio signal transmission process, the speaker 300 generates an audio signal at an opening position close to the cavity 101a, and then the audio signal propagates toward the closed end, enters the connecting channel 101b from a position close to the closed end, and then transmits toward the second end of the connecting channel 101b, and then enters the first sound cavity 420 from the second end of the connecting channel 101b.

[0047] In this solution, the extension direction from the opening of the cavity 101a to its closed end is opposite to the extension direction from the first end to the second end of the connecting channel 101b. At this time, the cavity 101a and the connecting channel 101b form a tortuous audio transmission path, thereby further preventing dust and water vapor from being adsorbed on the speaker 300, thereby further improving the waterproof and dustproof performance of the security equipment.

[0048] In the above embodiment, the first housing 100 may be provided with a first receiving groove 102 and a first recess 103, the second housing 200 may be a flat plate structure, and the second housing 200 may cover the opening positions of the first receiving groove 102 and the first recess 103, thereby forming the receiving cavity 410 and the first sound cavity 420. Alternatively, the second housing 200 is provided with a second receiving groove 202 and a second recess 203, the first housing 100 may be a flat plate structure, and the first housing 100 may cover the opening positions of the second receiving groove 202 and the second recess 203, thereby forming the receiving cavity 410 and the first sound cavity 420.

[0049] In another optional solution, the first housing 100 may be provided with a first receiving groove 102 and a first recess 103, and the second housing 200 may be provided with a second receiving groove 202 and a second recess 203. The notch of the first receiving groove 102 is arranged opposite to the notch of the second receiving groove 202, and an accommodating cavity 410 is formed. The second end of the connecting channel 101b passes through the inner surface of the first recess 103, and the connecting channel 101b is connected to the first recess 103. The first recess 103 is spaced apart from the cavity 101a, and the first recess 103 may be arranged opposite to the second recess 203, and the first sound cavity 420 is formed.

[0050] This solution can increase the volume of the first sound cavity 420 and the accommodating cavity 410, thereby further increasing the internal space of the security device.

[0051] Here, the first recess 103 and the second recess 203 may be groove-shaped structures. In this case, the first recess 103 and the second recess 203 may have an opening respectively. Therefore, the opening of the first recess 103 and the opening of the second recess 203 are arranged relative to each other, so that the first sound cavity 420 is formed between the first recess 103 and the second recess 203. Alternatively, the first recess 103 and the second recess 203 may both be notches. In this case, the first recess 103 and the second recess 203 are both composed of a bottom surface and three side surfaces, that is, the first recess 103 and the second recess 203 do not have a top surface and a side surface. In this case, the first recess 103 and the second recess 203 have two openings respectively, one opening is located on the top surface, and the other opening is located on the side surface. Therefore, the openings on the top surfaces of the first recess 103 and the second recess 203 are arranged relative to each other, so that the first recess 103 and the second recess 203 form the first sound cavity 420, and the two notches on the sides of the first recess 103 and the second recess 203 can form the above-mentioned sound outlet 201. Alternatively, one of the first recess 103 and the second recess 203 is a groove-shaped structure, and the other is a notch. In this case, the top surface opening of the notch is arranged opposite to the opening of the groove-shaped structure to enclose the first sound cavity 420, part of the side wall of the groove-shaped structure blocks the side opening of the notch, and the above-mentioned sound hole 201 can be opened on the side wall of the groove-shaped structure opposite to the opening.

[0052] In one solution, the first recess 103 may be formed in the first receiving groove 102 . In this case, an extension structure is provided in the first receiving groove 102 , and the first recess 103 is formed on the extension structure.

[0053] In another optional solution, the first shell 100 may include a first annular sidewall 110 and a first cover plate 120, wherein the first annular sidewall 110 refers to the circumferential sidewall of the first shell 100, and the first cover plate 120 is an end plate sealed at one end of the circumferential sidewall. The first cover plate 120 may be disposed at one end of the first annular sidewall 110, and the first annular sidewall 110 and the first cover plate 120 may enclose a first receiving groove 102. A protrusion 130 may be disposed in the first receiving groove 102, and the protrusion 130 may be provided with a cavity 101a. A first recess 103 may be disposed on the surface of the first annular sidewall 110 facing the second shell 200, and at least a portion of the connecting channel 101b is disposed on the first annular sidewall 110.

[0054] In this solution, the first recess 103 is located on the first annular side wall 110, so there is no need to separately set up an extension structure to form the first recess 103, thereby simplifying the structure of the first shell 100, and thus being more conducive to the manufacture and assembly of the first shell 100, further reducing the manufacturing cost of the security equipment. At the same time, the first recess 103 is set on the first annular side wall 110, which also avoids the first recess 103 occupying the first receiving groove 102 and avoiding affecting the volume of the receiving cavity 410.

[0055] In the above embodiment, part of the outer surface of the protrusion 130 may contact part of the inner surface of the first annular sidewall 110, and the first end of the connecting channel 101b may be located on the first annular sidewall 110, that is, the first end of the connecting channel 101b does not penetrate the protrusion 130. This requires a through hole to be opened on the protrusion 130 for the cavity 101a to communicate with the connecting channel 101b. Alternatively, the first end of the connecting channel 101b may pass through the inner surface of the first annular sidewall 110 to the protrusion 130, and then pass through to the inner surface of the cavity 101a. In this case, the first end of the connecting channel 101b is located on the protrusion 130.

[0056] Alternatively, part of the outer surface of the protrusion 130 can be separated from part of the inner surface of the first annular side wall 110, that is, there is a certain distance between the protrusion 130 and the first annular side wall 110. In this case, a channel needs to be opened on the first cover plate 120, and this channel is part of the connecting channel 101b, which is used to connect the cavity 101a. At this time, the part of the connecting channel 101b opened on the first annular side wall 110 and the part of the connecting channel 101b opened on the first cover plate 120 form an integral channel, and the integral channel is the connecting channel 101b.

[0057] In the above embodiment, in order to ensure the volume of the first sound cavity 420, the volume of the first recess 103 needs to be set larger, so the wall thickness of the first annular side wall 110 needs to be increased, so that the volume of the accommodating cavity 410 needs to be reduced without affecting the overall volume of the security equipment.

[0058] Based on this, in another optional solution, the first annular side wall 110 may include an annular wall 111 and an annular flange 112, the first cover plate 120 and the annular flange 112 may be respectively arranged at opposite ends of the annular wall 111, and the annular flange 112 may be arranged around the edge of the annular wall 111, in which case the inner surface of the annular flange 112 coincides with the inner edge of the annular wall 111. The outer edge of the annular flange 112 may protrude from the outer surface of the annular wall 111, in which case the width of the annular flange 112 is greater than the wall thickness of the annular wall 111. The surface of the annular flange 112 facing the second shell 200 is provided with a first recess 103, and the first recess 103 may penetrate to the outer edge of the annular flange 112 in a direction away from the first receiving groove 102. The first recess 103 here is the notch listed above.

[0059] In this solution, the wall thickness of the first annular side wall 110 is small, so it does not affect the volume of the accommodating cavity 410. At the same time, the annular flange 112 has a large width, so that a large space can be reserved for the first recess 103. Therefore, this solution does not affect the volume of the accommodating cavity 410, and makes the volume of the first recess 103 larger, further improving the utilization of the internal space of the security device.

[0060] In the above embodiment, the protrusion 130 may be a cylindrical structure, and the first end of the cylindrical structure is covered by the first cover plate 120, so the protrusion 130 and the first cover plate 120 form a cavity 101a. In this case, the first end is covered by the first cover plate 120, so the first end is the closed end of the cavity 101a, and the second end of the cylindrical structure is exposed, so the second end forms the opening of the cavity 101a. Alternatively, the protrusion 130 is provided with a blind hole, one end of the blind hole forms the closed end of the cavity 101a, and the other end forms the opening of the cavity 101a.

[0061] In the above embodiment, the first annular side wall 110 is an integrated structural component, and the end of the annular wall 111 extends toward the outside of the first receiving groove 102 to form the above-mentioned annular flange 112 .

[0062] In an optional solution, a first recess 103 is formed on the surface of the annular flange 112 facing the second shell 200. In this case, the material of a local area of ​​the annular flange 112 is removed to form the first recess 103. In this case, the annular flange 112 is sealed and connected to the second shell 200 except for the area of ​​the first recess 103. The first recess 103 is located outside the sealing structure formed by the first shell 100 and the second shell 200.

[0063] In another optional embodiment, the surface of the annular flange 112 on the side facing the second shell 200 may be formed with a first extension protrusion 113 and a second extension protrusion 114 connected end to end along the extension direction thereof, and in this case, the first extension protrusion 113 and the second extension protrusion 114 form an annular structure. Both the first extension protrusion 113 and the second extension protrusion 114 may be sealed and connected to the second shell 200. In this case, the first extension protrusion 113 and the second extension protrusion 114 may be sealed and connected to the second shell 200 as a sealing structure. The second extension protrusion 114 may enclose a first recess 103 with a portion of the surface of the annular flange 112, and the second end of the connecting channel 101b may penetrate the surface of the annular flange 112 on the side facing the second shell 200.

[0064] In this solution, the first extension protrusion 113 and the second extension protrusion 114 are formed on the surface of the annular flange 112, which can not only form the first recess 103, but also improve the overall strength of the annular flange 112, thereby further improving the safety of the housing of the security device. In addition, the first extension protrusion 113 and the second extension protrusion 114 can also be used as a sealing structure, thereby further simplifying the structure of the security device.

[0065] Further, the second extension protrusion 114 may include a first strip segment 1141, a second strip segment 1142 and a third strip segment 1143 connected in sequence, the second strip segment 1142 may be located at the inner edge of the annular flange 112, the first strip segment 1141 may extend toward the outer edge of the annular flange 112 from one end of the second strip segment 1142, and connect with one end of the first extension protrusion 113. The third strip segment 1143 extends toward the outer edge of the annular flange 112 from one end of the second strip segment 1142, and connects with the other end of the first extension protrusion 113. At this time, the first strip segment 1141, the second strip segment 1142 and the third strip segment 1143 form a first recess 103 in the shape of a notch with a local area of ​​the annular flange 112. It should be emphasized here that the second end of the connecting channel 101b is located on the side of the second strip segment 1142 away from the first receiving groove 102.

[0066] In this scheme, the second strip segment 1142 of the second extension protrusion 114 is located at the inner edge of the annular flange 112, so a large space is reserved between the outer surface of the second strip segment 1142 and the outer edge of the annular flange 112, thereby making the volume of the first recess 103 larger, thereby further increasing the volume of the first sound cavity 420.

[0067] In another optional solution, a sound hole 201 may be provided in an area where the second shell 200 and the second strip segment 1142 are arranged opposite to each other, that is, the second strip segment 1142 is located on the opposite side of the sound hole 201. The angles between the first strip segment 1141 and the third strip segment 1143 and the second strip segment 1142 are all greater than 90°. At this time, the first recess 103 is a trapezoidal structure, and the first strip segment 1141, the third strip segment 1143 and the second strip segment 1142 are all side walls of the first recess 103. Specifically, the angle between the inner surface of the first strip segment 1141 and the inner surface of the second strip segment 1142 is greater than 90°, such as Figure 8 The angle between the inner surface of the third strip segment 1143 and the inner surface of the second strip segment 1142 is greater than 90°. Figure 8 The angle shown in B.

[0068] In this scheme, the first strip segment 1141 and the third strip segment 1143 are inclined outward relative to the second strip segment 1142. Therefore, when rainwater enters the first sound cavity 420 through the sound outlet hole 201, under the influence of gravity, the rainwater can be discharged from the first strip segment 1141 and the third strip segment 1143 along the inclined direction, thereby avoiding the risk of rainwater accumulating in the front sound cavity.

[0069] In another optional solution, the angles between the first strip segment 1141 and the third strip segment 1143 and the second strip segment 1142 can all be 150°. Of course, the angles between the first strip segment 1141 and the third strip segment 1143 and the second strip segment 1142 can also be other angles, which are not limited herein.

[0070] In the above embodiment, the angle A and the angle B may be the same. In this case, the orthographic projection of the first recess 103 may be an isosceles trapezoidal structure.

[0071] In another optional solution, the connecting channel 101b may include a first connecting section 101b1 and a second connecting section 101b2 that are connected. The annular wall 111 may include an annular base plate 1111 and a first protrusion 1112 disposed on a portion of the inner surface of the annular base plate 1111. A side surface of the first protrusion 1112 that is away from the annular base plate 1111 contacts a portion of the outer surface of the protrusion 130. The annular base plate 1111 and the first cover plate 120 form a first receiving groove 102. The first protrusion 1112 here refers to a region where the wall thickness of the annular wall 111 is increased.

[0072] The annular flange 112 may include a flange body 1121 and a second protrusion 1122. The second protrusion 1122 may be provided on the inner side of the flange body 1121. The flange body 1121 may be provided around the edge of the annular substrate 1111, and the second protrusion 1122 may be provided on the first protrusion 1112. The second protrusion 1122 here refers to the area where the width of the annular flange 112 is increased.

[0073] The annular base plate 1111 and the first protruding portion 1112 form a first connecting section 101b1, the flange body 1121 and the second protruding portion 1122 can form a second connecting section 101b2, and the end of the first connecting section 101b1 away from the second connecting section 101b2 can be connected to the cavity 101a. The second connecting section 101b2 is connected to the first recess 103, and at this time, the end of the second connecting section 101b2 away from the first connecting section 101b1 is the first end of the above-mentioned connecting channel 101b. The first extending protrusion 113, the first strip section 1141 and the third strip section 1143 are all formed on the flange body 1121, and the second strip section 1142 is formed on the second protruding portion 1122.

[0074] In this solution, the wall thickness of a local area of ​​the first annular side wall 110 is increased, and a connecting channel 101b is provided in the area with increased wall thickness, so that the strength of the first annular side wall 110 is not easily affected, thereby improving the safety performance of the security equipment.

[0075] like Figure 4 As shown, the first protrusion 1112 and the second protrusion 1122 are integrally formed, so the first protrusion 1112 and the second protrusion 1122 are an integral protrusion, and a connecting channel 101b is formed between the protrusion and the annular wall 111, and at the same time, it strengthens the local area of ​​the first annular side wall 110.

[0076] In another optional solution, the second housing 200 may include a second annular sidewall 210 and a second cover plate 220, the second cover plate 220 may be disposed at one end of the first annular sidewall 110, and the second cover plate 220 and the second annular sidewall 210 form a second receiving groove 202. The second cover plate 220 may be provided with an extension baffle 230 on one side facing the second receiving groove 202, and both ends of the extension baffle 230 are connected to the second annular sidewall 210. The second annular sidewall 210, the second cover plate 220 and the strip baffle may form a second recess 203. The second recess 203 here is a groove-shaped structure.

[0077] In this solution, the baffle 230 is extended to form a second recess 203 in the second receiving groove 202, so that the thickness and weight of the second shell 200 can be reduced, thereby further meeting the development of lightweight and thin security equipment.

[0078] Further, the extended baffle 230 may include a first plate 231, a second plate 232, and a third plate 233 connected in sequence, and the ends of the first plate 231 and the third plate 233 facing away from the second plate 232 may contact the inner surface of the first annular side wall 110, and the area of ​​the second annular side wall 210 opposite to the second plate 232 may be provided with a sound outlet 201, and the angles between the first plate 231 and the third plate 233 and the second plate 232 are greater than 90°. Specifically, the angle between the inner surface of the first plate 231 and the inner surface of the second plate 232 is greater than 90°, such as Fig.11 The angle between the inner surface of the third plate 233 and the inner surface of the second plate 232 is greater than 90°. Fig.11 The angle shown by C in the figure.

[0079] In this solution, the first plate 231 and the third plate 233 are inclined outward relative to the second plate 232. Therefore, when rainwater enters the first sound cavity 420 through the sound outlet 201, under the influence of gravity, the rainwater can be discharged from the first plate 231 and the third plate 233 along the inclined direction, thereby avoiding the risk of rainwater accumulating in the front sound cavity.

[0080] In another optional solution, the angles between the first plate 231 and the third plate 233 and the second plate 232 can all be 150°. Of course, the angles between the first plate 231 and the third plate 233 and the second plate 232 can also be other angles, which are not limited herein.

[0081] In the above embodiment, the angle C and the angle D may be the same. In this case, the orthographic projection of the second recess 203 may be an isosceles trapezoidal structure.

[0082] In another optional scheme, the first plate body 231 abuts against the above-mentioned first strip segment 1141, the second plate body 232 abuts against the above-mentioned second strip segment 1142, and the third plate body 233 abuts against the above-mentioned third strip segment 1143. At this time, the first recess 103 and the second recess 203 form a first sound cavity 420.

[0083] In another optional embodiment, a sealing protrusion 240 may be further provided on one side of the second cover plate 220 facing the second receiving groove 202, the sealing protrusion 240 extends along the circumference of the second cover body, one end of the sealing protrusion 240 may be connected to one end of the extension baffle 230, the other end of the sealing protrusion 240 may be connected to the other end of the extension baffle 230, and the extension baffle 230 and the sealing protrusion 240 are both sealed and connected to the first shell 100. At this time, the extension baffle 230 and the sealing protrusion 240 form an annular structure, and the extension direction of the annular structure is along the circumference of the second shell 200.

[0084] In this solution, the extended baffle 230 can be used as a partial sealing structure, thereby further simplifying the structure of the second housing 200 .

[0085] Further, a sealing ring 500 may be provided between the first housing 100 and the second housing 200, the first recessed portion 103 and the second recessed portion 203 may be located outside the sealing ring 500, and the sealing ring 500 may be provided with an annular sealing groove 520 on the surface of the side facing the second housing 200, and at least part of the extended baffle 230 and the sealing protrusion 240 may be located in the annular sealing groove 520. This solution can further improve the sealing performance of the first housing 100 and the second housing 200. The sealing ring 500 here may be made of materials such as foam and rubber. Of course, the sealing ring 500 may also be made of other materials, which is not limited herein.

[0086] In an optional solution, the sealing ring 500 can be carried on the annular structure formed by the first extension protrusion 113 and the second extension protrusion 114 on the first housing 100, and the second annular side wall 210 of the second housing 200 can overlap the outer edge of the annular flange 112. At this time, the area between the second annular side wall 210 and the sealing ring 500 can form the first sound cavity 420, and the area inside the sealing ring 500 can form the accommodating cavity 410. In this solution, the first sound cavity 420 and the accommodating cavity 410 are isolated by the sealing ring 500, thereby further improving the waterproof and dustproof performance of the security equipment.

[0087] In another optional solution, a positioning notch 510 may be provided at the edge of the sealing ring 500, a positioning protrusion 250 may be provided in the second receiving groove 202, and at least a portion of the positioning protrusion 250 may be located in the positioning notch 510, so that the second housing 200 and the sealing ring 500 are positioned and matched. This solution can improve the assembly accuracy of the sealing ring 500, thereby avoiding the risk of the sealing ring 500 being offset and causing the first sound cavity 420 and the receiving cavity 410 to be connected.

[0088] The above embodiments of the present invention focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0089] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A security device, It is characterized in that It comprises a first housing (100), a second housing (200) and a speaker (300); The first shell (100) and the second shell (200) are connected to form a accommodating cavity (410) and a first sound cavity (420) which are arranged in parallel; the second shell (200) is provided with a sound outlet hole (201), and the sound outlet hole (201) is communicated with the first sound cavity (420); the first shell (100) is provided with a second sound cavity (101); the loudspeaker (300) is located in the accommodating cavity (410) and is arranged on the first shell (100); the second sound cavity (101) is communicated with the loudspeaker (300); the first sound cavity (420) is communicated with the second sound cavity (101) to form a front sound cavity of the loudspeaker (300).

2. The security device according to claim 1, It is characterized in that The second sound cavity (101) comprises a cavity (101a) and a connecting channel (101b); the speaker (300) is sealedly connected to the edge of the opening of the cavity (101a); a first end of the connecting channel (101b) is connected to the cavity (101a); and a second end of the connecting channel (101b) is connected to the first sound cavity (420).

3. The security device according to claim 2, It is characterized in that The first end of the connecting channel (101b) is located at an end away from the opening of the cavity (101a), the opening of the cavity (101a) faces the second shell (200), and the second end of the connecting channel (101b) passes through the surface of the first shell (100) on a side facing the second shell (200), and the opening of the cavity (101a) and the second end of the connecting channel (101b) are arranged in parallel.

4. The security device according to claim 2, It is characterized in that The first shell (100) is provided with a first accommodating groove (102) and a first recess (103), and the second shell (200) is provided with a second accommodating groove (202) and a second recess (203), the notch of the first accommodating groove (102) and the notch of the second accommodating groove (202) are arranged opposite to each other, and form the accommodating cavity (410); the second end of the connecting channel (101b) passes through the inner surface of the first recess (103), the first recess (103) and the cavity (101a) are arranged at intervals, the first recess (103) and the second recess (203) are arranged opposite to each other, and form the first sound cavity (420).

5. The security device according to claim 4, It is characterized in that The first housing (100) comprises a first annular side wall (110) and a first cover plate (120); the first cover plate (120) is arranged at one end of the first annular side wall (110); the first annular side wall (110) and the first cover plate (120) enclose the first accommodating groove (102); a protrusion (130) is arranged in the first accommodating groove (102); the protrusion (130) is provided with the cavity (101a); The first recess (103) is provided on the surface of the first annular side wall (110) facing the second shell (200), and at least a portion of the connecting channel (101b) is provided on the first annular side wall (110).

6. The security device according to claim 5, It is characterized in that The first annular side wall (110) comprises an annular wall (111) and an annular flange (112); the first cover plate (120) and the annular flange (112) are respectively arranged at opposite ends of the annular wall (111); the annular flange (112) is arranged around the edge of the annular wall (111); the outer edge of the annular flange (112) protrudes from the outer surface of the annular wall (111); the surface of the annular flange (112) on one side facing the second shell (200) is provided with the first recess (103); the first recess (103) penetrates to the outer edge of the annular flange (112) along a direction away from the first accommodating groove (102).

7. The security device according to claim 6, It is characterized in that A first extension protrusion (113) and a second extension protrusion (114) are formed on the surface of the annular flange (112) facing the second shell (200) and connected end to end along the extension direction thereof; the first extension protrusion (113) and the second extension protrusion (114) are both sealedly connected to the second shell (200); the second extension protrusion (114) and a part of the surface of the annular flange (112) form the first recess (103); and the second end of the connecting channel (101b) passes through the surface of the annular flange (112) facing the second shell (200).

8. The security device according to claim 7, It is characterized in that The second extending protrusion (114) comprises a first strip segment (1141), a second strip segment (1142) and a third strip segment (1143) which are connected in sequence; the second strip segment (1142) is located at the inner edge of the annular flange (112); one end of the first strip segment (1141) which is away from the second strip segment (1142) extends toward the outer edge of the annular flange (112) and is connected to one end of the first extending protrusion (113); one end of the third strip segment (1143) which is away from the second strip segment (1142) extends toward the outer edge of the annular flange (112) and is connected to the other end of the first extending protrusion (113).

9. The security device according to claim 8, It is characterized in that The sound outlet hole (201) is provided in an area where the second shell (200) and the second strip segment (1142) are arranged opposite to each other, and the angles between the first strip segment (1141) and the third strip segment (1143) and the second strip segment (1142) are all greater than 90°.

10. The security device according to claim 8, It is characterized in that The connecting channel (101b) comprises a first connecting section (101b1) and a second connecting section (101b2) which are connected to each other; The annular wall (111) comprises an annular base plate (1111) and a first protruding portion (1112) arranged on a portion of the inner surface of the annular base plate (1111); a side surface of the first protruding portion (1112) facing away from the annular base plate (1111) contacts a portion of the outer surface of the protruding portion (130); the annular base plate (1111) and the first cover plate (120) enclose the first containing groove (102); The annular flange (112) comprises a flange body (1121) and a second protruding portion (1122); the second protruding portion (1122) is arranged on the inner side of the flange body (1121); the flange body (1121) is arranged around the edge of the annular base plate (1111); and the second protruding portion (1122) is arranged on the first protruding portion (1112); The first connecting section (101b1) is formed between the annular base plate (1111) and the first protruding portion (1112), and the second connecting section (101b2) is formed between the flange body (1121) and the second protruding portion (1122). The end of the first connecting section (101b1) away from the second connecting section (101b2) is connected to the cavity (101a), and the second connecting section (101b2) is connected to the first recessed portion (103). The first extending protrusion (113), the first strip section (1141) and the third strip section (1143) are all formed on the flange body (1121), and the second strip section (1142) is formed on the second protruding portion (1122).

11. The security device according to claim 4, It is characterized in that The second shell (200) comprises a second annular side wall (210) and a second cover plate (220); the second cover plate (220) is arranged at one end of the second annular side wall (210); the second cover plate (220) and the second annular side wall (210) form the second receiving groove (202); an extension baffle (230) is arranged on the side of the second cover plate (220) facing the second receiving groove (202); both ends of the extension baffle (230) are connected to the second annular side wall (210); the second annular side wall (210), the second cover plate (220) and the extension baffle (230) form the second recess (203).

12. The security device according to claim 11, It is characterized in that The extended baffle (230) comprises a first plate body (231), a second plate body (232) and a third plate body (233) which are connected in sequence, wherein the ends of the first plate body (231) and the third plate body (233) which are away from the second plate body (232) are in contact with the inner surface of the first annular side wall (110), and the sound outlet hole (201) is provided in the area of ​​the second annular side wall (210) opposite to the second plate body (232), and the angles between the first plate body (231) and the third plate body (233) and the second plate body (232) are all greater than 90°.

13. The security device according to claim 11, It is characterized in that A sealing protrusion (240) is also provided on one side of the second cover plate (220) facing the second receiving groove (202), and the sealing protrusion (240) extends along the circumference of the second cover plate (220), one end of the sealing protrusion (240) is connected to one end of the extended baffle (230), and the other end of the sealing protrusion (240) is connected to the other end of the extended baffle (230), and the extended baffle (230) and the sealing protrusion (240) are both sealed and connected to the first shell (100).

14. The security device according to claim 13, It is characterized in that A sealing ring (500) is arranged between the first shell (100) and the second shell (200); the first recess (103) and the second recess (203) are both located on the outside of the sealing ring (500); an annular sealing groove (520) is provided on the surface of the sealing ring (500) on the side facing the second shell (200); and at least part of the extended baffle (230) and the sealing protrusion (240) are located in the annular sealing groove (520).

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