Camera module and electronic equipment

Abstract

The invention discloses a camera module and electronic equipment, the camera module comprises a mounting seat, an optical filter and a uniform pressure part, the mounting seat is provided with a light hole and a vent hole, the optical filter covers the light hole, an accommodating cavity is enclosed by the optical filter and the mounting seat, the vent hole is communicated with the inside and the outside of the accommodating cavity, and the pressure part is arranged in the accommodating cavity. At least part of the pressure equalizing part is arranged in the vent hole, and the pressure equalizing part can control opening and closing of the vent hole. When the pressure difference between the inside and the outside of the accommodating cavity is greater than a preset threshold value, the pressure equalizing part can control the vent hole to be in an open state, so that the air pressure inside and outside the accommodating cavity is balanced, and the problems of deformation and breakage of the optical filter due to overlarge pressure difference between the two sides can be avoided; and when the pressure difference between the interior and the exterior of the accommodating cavity is not greater than the preset threshold value, the pressure equalizing part can control the vent hole to be in a closed state, so that impurities such as water and dust can be prevented from entering the interior of the mounting seat, and the dustproof and waterproof performance of the electronic equipment is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a camera module and electronic equipment. Background Art

[0002] With the development of science and technology, camera modules are widely used in electronic devices such as mobile phones, tablet computers, driving recorders, and security monitoring. In the production process of camera modules, after the filter is fixed to the mounting base with a glue layer, the mounting base and the filter need to be baked to solidify the glue, so that the mounting base and the filter are stably connected. During the baking process, the mounting base is generally provided with an air escape hole, through which the air in the mounting base is discharged in time when heated at high temperature, so as to avoid the problem of the filter breaking due to the expansion of the enclosed air in the mounting base due to heat.

[0003] In the related art, after the mounting base and the filter are baked, the vent holes are sealed with glue to prevent water, dust and other debris from entering the mounting base. However, when the subsequent use environment of the electronic equipment involves high temperature, high pressure and other scenes, a large pressure difference is likely to occur between the inside and outside of the mounting base, resulting in the risk of the filter still breaking. Summary of the invention

[0004] The present application discloses a camera module and an electronic device to solve the problem in the related art that when the electronic device is in high temperature, high pressure and other usage scenarios, there is a risk of filter breakage.

[0005] In order to solve the above technical problems, this application is implemented as follows: In a first aspect, an embodiment of the present application discloses a camera module, which includes a mounting seat, a filter and a uniform pressure portion, wherein the mounting seat is provided with a light-transmitting hole and a vent hole, the filter cover is arranged on the light-transmitting hole and together with the mounting seat, forms a receiving cavity, the vent hole communicates the inside and the outside of the receiving cavity, and at least a part of the uniform pressure portion is arranged in the vent hole; When the pressure difference between the inside and outside of the accommodating chamber is greater than a preset threshold, the pressure equalizing unit controls the vent to be in an open state; when the pressure difference between the inside and outside of the accommodating chamber is not greater than the preset threshold, the pressure equalizing unit controls the vent to be in a closed state.

[0006] In a second aspect, an embodiment of the present application discloses an electronic device, which includes a device housing and the above-mentioned camera module, wherein the camera module is installed in the device housing.

[0007] The technical solution adopted in this application can achieve the following technical effects: The camera module disclosed in the embodiment of the present application improves the related technology. The camera module includes a mounting seat, a filter and a pressure-equalizing portion. The mounting seat is provided with a light-transmitting hole and a vent hole. The filter cover is arranged on the light-transmitting hole and forms a receiving cavity together with the mounting seat. The vent hole connects the inside and outside of the receiving cavity. At least part of the pressure-equalizing portion is arranged in the vent hole. The pressure-equalizing portion can control the opening and closing of the vent hole. When the pressure difference between the inside and outside of the receiving cavity is greater than a preset threshold, the pressure-equalizing portion can control the vent hole to be in an open state, so that the air pressure inside and outside the receiving cavity is balanced, thereby avoiding deformation, rupture and other problems of the filter; when the pressure difference between the inside and outside of the receiving cavity is not greater than a preset threshold, the pressure-equalizing portion can control the vent hole to be in a closed state, thereby preventing water, dust and other debris from invading the inside of the mounting seat, thereby improving the dustproof and waterproof performance of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A schematic diagram of the structure of the camera module disclosed in the embodiment of the present application; Figure 2 This is one of the structural schematic diagrams of the mounting base disclosed in the embodiment of the present application; Figure 3 One of the air path diagrams of the vent hole disclosed in the embodiment of the present application; Figure 4 The second gas path diagram of the vent hole disclosed in the embodiment of the present application; Figure 5 This is the second structural schematic diagram of the mounting base disclosed in the embodiment of the present application; Figure 6 The third gas path diagram of the vent hole disclosed in the embodiment of the present application; Figure 7 This is the fourth gas path diagram of the vent hole disclosed in the embodiment of the present application; Figure 8 This is the third structural schematic diagram of the mounting base disclosed in the embodiment of the present application; Fig. 9 The fifth gas path diagram of the vent hole disclosed in the embodiment of the present application; Fig.10 This is the sixth gas path diagram of the vent hole disclosed in the embodiment of the present application.

[0009] Description of reference numerals: 110-mounting seat, 111-light-transmitting hole, 112-vent, 1121-hole section, 120-filter, 130-uniform pressure part, 131-first blocking member, 1311-first end face, 1312-second end face, 1313-mounting hole, 132-mounting groove, 1321-first groove body, 1322-second groove body, 1323-third groove body, 133-elastic member, 1331-first spring sheet, 1332-second spring sheet, 134-second blocking member, 1341-third end face, 1342-fourth end face, 140-accommodating chamber, 150-first direction, 160-second direction, 170-one-way valve, 180-guide column, 190-dust collecting structure, 200-first pressure sensor, 210-second pressure sensor, 220-photosensitive chip, 230-lens. DETAILED DESCRIPTION

[0010] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0011] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or a sequential order. It should be understood that the data used in this way can be interchangeable in appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally a class, and the number of objects is not limited, for example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally represents that the front and back associated objects are a kind of "or" relationship.

[0012] The technical solutions disclosed in various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0013] Please refer to Figures 1 to 10The embodiment of the present application discloses a camera module, which may include a mounting seat 110, a filter 120 and a pressure-equalizing portion 130, wherein the mounting seat 110 is the structural basis of the camera module, and the mounting seat 110 is provided with a light-transmitting hole 111 and a vent hole 112, the light-transmitting hole 111 may be located in the central area of ​​the mounting seat 110, and the vent hole 112 may be located in the edge area of ​​the mounting seat 110. The filter 120 is covered on the light-transmitting hole 111, and the main function of the filter 120 is to filter a part of stray light such as infrared rays and visible red light, which can further improve the imaging quality of the camera module.

[0014] The filter 120 can be fixed to the mounting base 110 by bonding. After the filter 120 and the mounting base 110 are bonded, they together form a receiving cavity 140. The receiving cavity 140 can be used to place the photosensitive chip 220. The receiving cavity 140 is a closed chamber that can prevent dust from entering and prevent dust from falling on the photosensitive chip 220 and affecting the imaging quality. The lens 230 is arranged on the side of the filter 120 that is away from the receiving cavity 140. The lens 230 can adjust the focal length of the camera module by lifting.

[0015] The vent hole 112 connects the inside and outside of the accommodating cavity 140. When the vent hole 112 is in an open state, the airflow inside the accommodating cavity 140 and the airflow outside can flow relative to each other through the vent hole 112 to balance the internal and external air pressures, thereby preventing the occurrence of a pressure difference between the inside and outside of the accommodating cavity 140 under a high temperature and high pressure environment, which may cause the filter 120 to rupture. Considering that the vent hole 112 is always in an open state, which may cause water, dust and other debris to invade the accommodating cavity 140, at least a part of the equalizing pressure part 130 can be arranged in the vent hole 112, and the equalizing pressure part 130 can control the vent hole 112 to switch between an open state and a closed state according to the pressure difference between the inside and outside of the accommodating cavity 140.

[0016] When the pressure difference between the inside and outside of the accommodating chamber 140 is greater than a preset threshold, the pressure equalizing unit 130 can control the vent hole 112 to be in an open state. The opening timing of the vent hole 112 is described in combination with the following specific scenarios: First, during the production process of the camera module, after the filter 120 is fixed to the mounting base 110 by the glue layer, the mounting base 110 and the filter 120 need to be baked to solidify the glue. During the baking process, the gas pressure in the accommodating cavity 140 will increase when heated at high temperature and will be greater than the air pressure outside the accommodating cavity 140. At this time, the vent 112 can be controlled to be in an open state by the pressure-equalizing portion 130, so that the high-pressure gas in the accommodating cavity 140 can be smoothly discharged to the outside of the accommodating cavity 140 through the vent 112 to balance the air pressure between the inside and outside of the accommodating cavity 140, thereby avoiding the problem of excessive air pressure inside the accommodating cavity 140 squeezing the filter 120.

[0017] Secondly, in the use scenario where the camera module is under high pressure, for example, an electronic device is equipped with the camera module. In order to extend the service life of the electronic device, the user will choose to attach a protective film to the screen, back cover and other parts of the electronic device. The protective film is prone to generate bubbles during the attachment process, which requires the use of a defoamer to eliminate the bubbles generated during the film attachment process. The working air pressure of the defoamer reaches 6 standard atmospheres, which leads to a large pressure difference between the inside and outside of the accommodating cavity 140. The high-pressure gas outside the accommodating cavity 140 will squeeze the filter 120. At this time, the vent 112 can be controlled to be in an open state by the pressure-equalizing unit 130, so that the high-pressure gas outside the accommodating cavity 140 can smoothly pass through the vent 112 into the inside of the accommodating cavity 140 to balance the pressure difference between the inside and outside of the accommodating cavity 140.

[0018] In addition to the two specific usage scenarios mentioned above, for other usage scenarios that can cause a large pressure difference between the inside and outside of the accommodating chamber 140, the vent 112 can also be controlled to be in an open state through the above-mentioned pressure equalizing portion 130. The embodiment of the present application does not limit the usage scenario of the camera module.

[0019] When the pressure difference between the inside and outside of the accommodating cavity 140 is not greater than a preset threshold, the pressure-equalizing unit 130 can control the vent 112 to be in a closed state, thereby preventing water, dust and other debris from invading the accommodating cavity 140. It should be noted that the optical filter 120 has a first surface close to the inside of the accommodating cavity 140 and a second surface away from the inside of the accommodating cavity 140. The air pressure inside the accommodating cavity 140 directly acts on the first surface of the optical filter 120, and the air pressure outside the accommodating cavity 140 directly acts on the second surface of the optical filter 120. If the pressure difference between the inside and outside of the accommodating cavity 140 is too large, the first surface or the second surface of the optical filter 120 will be unevenly stressed, and the optical filter 120 is prone to deformation and rupture. Based on this, the above-mentioned preset threshold can be determined according to the pressure difference that the two sides of the filter 120 can withstand. When the pressure difference between the inside and the outside of the accommodating cavity 140 is not greater than the preset threshold, the filter 120 is not prone to deformation or rupture. When the pressure difference between the inside and the outside of the accommodating cavity 140 is greater than the preset threshold, the filter 120 is prone to deformation or rupture.

[0020] As described above, it can be known that the camera module disclosed in the embodiment of the present application improves the relevant technology. By setting a uniform pressure part 130 in the vent 112, the uniform pressure part 130 can control the opening and closing of the vent 112. When the pressure difference between the inside and outside of the accommodating cavity 140 is greater than a preset threshold, the uniform pressure part 130 can control the vent 112 to be in an open state, so that the air pressure inside and outside the accommodating cavity 140 is balanced, thereby preventing the filter 120 from being deformed or broken; when the pressure difference between the inside and outside of the accommodating cavity 140 is not greater than a preset threshold, the uniform pressure part 130 can control the vent 112 to be in a closed state, thereby preventing water, dust and other debris from invading the accommodating cavity 140 of the mounting seat 110, thereby improving the dustproof and waterproof performance of the electronic device.

[0021] like Figures 1 to 10 As shown, in an optional embodiment of the present application, the equalizing pressure portion 130 may include a first blocking member 131, at least a portion of the first blocking member 131 is disposed in the vent 112, and the first blocking member 131 has a first position and a second position, and the first position and the second position may be based on the vent 112 as a reference.

[0022] When the first blocking member 131 is in the first position, the first blocking member 131 blocks the vent hole 112, so that the vent hole 112 is in a closed state, thereby preventing water, dust and other debris from invading the accommodating cavity 140 of the mounting seat 110. When the first blocking member 131 is in the second position, there is a flow gap between the first blocking member 131 and the vent hole 112, so that the vent hole 112 is in an open state, and the gas inside the accommodating cavity 140 and the gas outside can flow relative to each other through the vent hole 112, so as to balance the internal and external air pressures.

[0023] The first blocking member 131 can be made of elastic materials such as silicone and rubber, and the shape of the first blocking member 131 can be spherical, cylindrical, plate-shaped, etc. The power source for the first blocking member 131 to switch between the first position and the second position can come from the pressure difference between the inside and outside of the accommodating chamber 140, or a driving component such as a motor or a cylinder can be used to control the first blocking member 131 to switch between the first position and the second position.

[0024] To facilitate the installation of the first blocking member 131, Figures 1 to 10As shown, a mounting groove 132 is provided in the mounting seat 110, and the mounting groove 132 is connected to the vent hole 112. At least a portion of the first blocking member 131 can be disposed in the mounting groove 132, and the first blocking member 131 can move in the mounting groove 132 to achieve switching between the first position and the second position. The mounting groove 132 can provide a mounting location for the first blocking member 131 on the one hand, and on the other hand, the mounting groove 132 can play a guiding role in the movement of the first blocking member 131, so that the first blocking member 131 can switch smoothly between the first position and the second position.

[0025] The power source for the first blocking member 131 to switch between the first position and the second position as mentioned above can come from the pressure difference between the inside and outside of the accommodating chamber 140. Correspondingly, the elastic member 133 can also be used to cooperate with the first blocking member 131. Specifically, the elastic member 133 can be arranged in the installation groove 132, and the elastic member 133 is elastically supported between the groove wall of the installation groove 132 and the first blocking member 131. The elastic member 133 can provide an elastic pre-tightening force to the first blocking member 131, so that the first blocking member 131 can be in the first position.

[0026] Analyzing in combination with specific scenarios, when the pressure difference between the inside and outside of the accommodating chamber 140 is not greater than the preset threshold, the elastic member 133 provides the first blocking member 131 with an elastic preload greater than the pressure difference between the inside and outside of the accommodating chamber 140, so the first blocking member 131 can be in the first position and stably block the vent 112. When the pressure difference between the inside and outside of the accommodating chamber 140 is greater than the preset threshold, the elastic member 133 provides the first blocking member 131 with an elastic preload less than the pressure difference between the inside and outside of the accommodating chamber 140. Under the action of the pressure difference, the first blocking member 131 will move to the second position, so that there is a flow gap between the first blocking member 131 and the vent 112, and the air pressure inside and outside the accommodating chamber 140 can be balanced through the flow gap. When the pressure difference after the balance is not greater than the preset threshold, under the action of the elastic member 133, the first blocking member 131 will move back to the first position, so that the vent 112 is in a closed state.

[0027] Please refer to Figures 1 to 4In a specific embodiment of the present application, the mounting groove 132 may include a first groove body 1321, which may be disposed inside the structural member of the mounting seat 110, the first groove body 1321 being connected to the vent hole 112, the first blocking member 131 and the first groove body 1321 being assembled by sliding connection, the elastic member 133 being disposed in the first groove body 1321, the elastic member 133 being elastically supported between the groove bottom of the first groove body 1321 and the first blocking member 131, to prevent the first blocking member 131 from falling out of the first groove body 1321, the two ends of the elastic member 133 may be connected to the first groove body 1321 and the first blocking member 131 respectively, and the specific connection method may be bonding, welding, etc. The elastic member 133 may be a member capable of storing elastic potential energy, such as a metal spring, a silicone spring, etc.

[0028] When the first blocking member 131 is in the first position, at least a portion of the first blocking member 131 extends from the first groove 1321 into the vent hole 112. Figure 2 From the perspective of FIG. 1 , the right side of the first blocking member 131 extends from the first slot 1321 into the vent hole 112 and blocks the vent hole, so that the vent hole 112 is in a closed state. Figure 3 and Figure 4 As shown, when the first blocking member 131 is in the second position, at least a portion of the first blocking member 131 is retracted from the vent hole 112 into the first slot body 1321 and compresses the elastic member 133. The first blocking member 131 can be completely retracted into the first slot body 1321, or only the left side portion can be retracted into the first slot body 1321, as long as a flow gap can be ensured in the vent hole 112.

[0029] In combination with specific usage scenarios, such as Figure 2 As shown, when the pressure difference between the inside and outside of the accommodating cavity 140 is not greater than the preset threshold, the elastic member 133 provides the first blocking member 131 with an elastic preload greater than the pressure difference between the inside and outside of the accommodating cavity 140, so the first blocking member 131 can be in the first position and stably block the vent hole 112. Figure 3 and Figure 4 As shown, when the pressure difference between the inside and outside of the accommodating chamber 140 is greater than a preset threshold, the elastic member 133 provides an elastic preload force to the first blocking member 131 that is smaller than the pressure difference between the inside and outside of the accommodating chamber 140. Under the action of the pressure difference, the first blocking member 131 moves to the second position, so that a flow gap is provided between the first blocking member 131 and the vent hole 112, and the air pressure inside and outside the accommodating chamber 140 can be balanced through the flow gap.

[0030] The situation where the pressure difference between the inside and outside of the accommodating chamber 140 is greater than the preset threshold can be further divided into two types, such as Figure 3 and Figure 4As shown, the upper part of the mounting seat 110 is defined as the outside of the accommodating cavity 140, and the lower part of the mounting seat 110 is defined as the inside of the accommodating cavity 140. When the air pressure inside the accommodating cavity 140 is greater than the air pressure outside, the airflow direction is as follows: Figure 3 In the direction indicated by the middle arrow, the airflow enters from the opening below the vent hole 112 and pushes the first blocking member 131 to move to the left, so that the first blocking member 131 is in the second position; when the air pressure inside the accommodating chamber 140 is lower than the air pressure outside, the airflow direction is as shown in FIG. Figure 4 In the direction indicated by the middle arrow, airflow enters from the opening above the vent hole 112 and pushes the first blocking member 131 to move leftward, so that the first blocking member 131 is in the second position.

[0031] like Figures 2 to 4 As shown, the first blocking member 131 may be a ball structure, which is slidably connected to the first slot 1321. The design of the ball structure can avoid the problem of the first blocking member 131 getting stuck during the sliding process.

[0032] like Figures 2 to 4 As shown, the vent hole 112 may include a plurality of hole segments 1121, the plurality of hole segments 1121 are zigzagly arranged and interconnected, the hole segments 1121 may be extended in the horizontal direction, may be extended in the vertical direction, or may be inclined, and the first slot 1321 is connected to at least one hole segment 1121. The vent hole 112 adopts a design of a plurality of hole segments 1121, which can increase the path of airflow and increase the flow resistance, thereby preventing excessive flow velocity from carrying too many debris into the accommodating cavity 140.

[0033] like Figures 5 to 10 As shown, in an optional embodiment of the present application, the mounting groove 132 may include a second groove body 1322, which may be disposed in a structural member of the mounting seat 110, and the second groove body 1322 extends circumferentially along the vent hole 112 and communicates with the vent hole 112. Figure 5 As shown, the first direction 150 is defined as the radial direction of the vent hole 112, and the second direction 160 is defined as the axial direction of the vent hole 112. The two ends of the first blocking member 131 along the first direction 150 can extend into the second slot body 1322 respectively, and the first blocking member 131 can move in the second slot body 1322 along the second direction 160. The first blocking member 131 has a first end face 1311 and a second end face 1312 opposite to each other along the second direction 160. The vent hole 112 has a first opening and a second opening opposite to each other along the second direction 160. The first end face 1311 is close to the first opening, and the second end face 1312 is close to the second opening. It should be noted that along the second direction 160, the projection of the first blocking member 131 covers the first opening of the vent hole 112.

[0034] When the first blocking member 131 is in the first position, the first end surface 1311 can cover and block the first opening, so that the vent hole 112 is in a closed state. When the first blocking member 131 is in the second position, there is a flow gap between the first end surface 1311 and the first opening, so that the vent hole 112 is in an open state.

[0035] like Figures 5 to 10 As shown, the elastic member 133 can be elastically supported between the groove wall of the second groove body 1322 and the second end surface 1312, and the elastic member 133 can apply an elastic pre-tightening force to the first blocking member 131 so that the first blocking member 131 can be in the first position.

[0036] like Figures 5 to 7 As shown, in a specific embodiment of the present application, the elastic member 133 may include a first elastic piece 1331 and a second elastic piece 1332. Both the first elastic piece 1331 and the second elastic piece 1332 are arc-shaped structures and are both arranged in the second slot body 1322. The first elastic piece 1331 and the second elastic piece 1332 are respectively located on both sides of the vent hole 112 along the first direction 150. The first elastic piece 1331 and the second elastic piece 1332 are respectively elastically supported between the slot wall of the second slot body 1322 and the second end face 1312 to support the first blocking member 131 in the first position; when the first blocking member 131 is in the second position, the second end face 1312 compresses the first elastic piece 1331 and the second elastic piece 1332 respectively.

[0037] In combination with a specific usage scenario, the upper side of the mounting seat 110 is defined as the outside of the accommodating chamber 140, and the lower side of the mounting seat 110 is defined as the inside of the accommodating chamber 140. When the air pressure inside the accommodating chamber 140 is lower than the air pressure outside, and the pressure difference is greater than the elastic preload force provided by the elastic member 133 to the first blocking member 131, the airflow direction is as follows: Figure 6 In the direction indicated by the middle arrow, the airflow enters from the first opening above the vent 112 and pushes the first blocking member 131 downward, so that the first blocking member 131 is in the second position, and compresses the first elastic sheet 1331 and the second elastic sheet 1332 respectively. At this time, the vent 112 is in an open state, and the airflow can flow to the second opening through the first opening of the vent 112 and the second groove 1322. After the air pressure inside and outside the accommodating cavity 140 is balanced, the first elastic sheet 1331 and the second elastic sheet 1332 push the first blocking member 131 upward, so that the first end surface 1311 of the first blocking member 131 blocks the first opening of the vent 112. At this time, the vent 112 is in a closed state.

[0038] For the case where the air pressure inside the accommodating chamber 140 is greater than the air pressure outside, the pressure-equalizing portion 130 may further include a one-way valve 170. The first blocking member 131 is provided with a mounting hole 1313 that passes through the first end face 1311 and the second end face 1312. The one-way valve 170 is disposed in the mounting hole 1313. The one-way valve 170 is sealed with the hole wall of the mounting hole 1313. The gas allowed to pass through the one-way valve 170 flows toward the first opening. When the air pressure inside the accommodating chamber 140 is greater than the air pressure outside, and the pressure difference is greater than a preset threshold, the one-way valve 170 may be in an open state. Figure 6 As shown, air flow can enter the one-way valve 170 through the second opening of the vent hole 112 and flow out through the first opening.

[0039] To ensure that the first blocking member 131 can stably move in the second direction 160, as Figures 5 to 7 As shown, the pressure-equalizing portion 130 may further include a guide post 180, which is disposed in the second slot 1322, and extends along the second direction 160, and both ends of the guide post 180 may be respectively connected and fixed to the slot wall of the second slot 1322. The portion of the first blocking member 131 extending into the second slot 1322 may be provided with a guide hole, and the guide post 180 may be inserted into the guide hole of the first blocking member 131. The sliding cooperation between the guide post 180 and the guide hole can improve the stability of the movement of the first blocking member 131.

[0040] In an optional embodiment of the present application, Figures 8 to 10 As shown, the first blocking member 131 can be an electrodeformable structure, and the first blocking member 131 includes a fixed end and a free end. The elastic member 133 is elastically supported between the groove wall of the second groove body 1322 and the fixed end of the first blocking member 131. Under the support of the elastic member 133, the first end face 1311 of the first blocking member 131 can cover the first opening of the vent hole 112 to seal the vent hole 112.

[0041] When the first blocking member 131 is powered on, the free end of the first blocking member 131 is bent in the direction opposite to the first opening, so that the first blocking member 131 is in the second position. At this time, there is a flow gap between the first end face 1311 of the first blocking member 131 and the first opening of the vent hole 112, through which air can pass. The first blocking member 131 can be made of materials such as shape memory alloy and IPMC (ion-exchange polymer metal composite).

[0042] Taking IPMC material as an example, when voltage is applied to the thickness direction of IPMC, IPMC will produce a large deformation and bend toward the anode. Therefore, the bending of IPMC can be controlled by controlling the power-on voltage or current. In combination with the above-mentioned specific structure, the upper part of the first blocking member 131 can be connected to the cathode, and the lower part of the first blocking member 131 can be connected to the anode. When the first blocking member 131 is powered on, the free end of the first blocking member 131 bends in the direction away from the first opening (bends toward the anode), so that the first blocking member 131 is in the second position; when the voltage applied to the first blocking member 131 is removed, the first blocking member 131 can return to the first position and block the vent 112.

[0043] Considering that only controlling the opening and closing of the vent hole 112 by the first blocking member 131 may have a problem of poor stability, in the embodiment of the present application, Figures 8 to 10 As shown, the mounting groove 132 may further include a third groove body 1323, which is circumferentially extended along the vent hole 112 and is connected to the vent hole 112, the second groove body 1322 is close to the first opening, and the third groove body 1323 is close to the second opening, and the area of ​​the vent hole 112 located between the second groove body 1322 and the third groove body 1323 is a buffer area, which can reduce the pressure difference on both sides of the vent hole 112, thereby reducing airflow fluctuations.

[0044] Corresponding to the third slot body 1323, the pressure-equalizing part 130 may also include a second blocking member 134. The second blocking member 134 may have the same structure as the first blocking member 131. The second blocking member 134 is disposed in the third slot body 1323. The second blocking member 134 has a third end face 1341 and a fourth end face 1342 opposite to each other along the second direction 160. The third end face 1341 is close to the second opening, and the fourth end face 1342 is close to the buffer chamber. Similarly, the second blocking member 134 also includes a fixed end and a free end. An elastic member 133 is also disposed between the fixed end of the second blocking member 134 and the slot wall of the third slot body 1323. The specific assembly method may refer to the first blocking member 131 described above. When the second blocking member 134 is powered on, the free end of the second blocking member 134 bends in a direction opposite to the second opening, so that a flow gap exists between the third end face 1341 of the second blocking member 134 and the second opening of the vent hole 112.

[0045] In combination with specific usage scenarios, such as Figure 8As shown, when the pressure difference between the inside and the outside of the accommodating cavity 140 is not greater than a preset threshold value, the first blocking member 131 and the second blocking member 134 are both in an unpowered state, the first end face 1311 of the first blocking member 131 blocks the first opening of the vent 112, and the third end face 1341 of the second blocking member 134 blocks the second opening of the vent 112, so that the vent 112 is in a closed state.

[0046] When the pressure difference between the inside and outside of the accommodating chamber 140 is greater than a preset threshold, the first blocking member 131 and the second blocking member 134 can be controlled to be in an energized state, which can be further divided into two scenarios, such as Fig. 9 and Fig.10 As shown, the upper side of the mounting seat 110 is defined as the outside of the accommodating cavity 140, and the lower side of the mounting seat 110 is defined as the inside of the accommodating cavity 140. When the air pressure inside the accommodating cavity 140 is lower than the air pressure outside, the free end of the first blocking member 131 is bent in a direction away from the first opening, and the free end of the second blocking member 134 is bent in a direction away from the second opening, and the vent hole 112 is in an open state. The airflow direction is as shown in FIG. Fig. 9 In the direction indicated by the middle arrow, the airflow enters from the first opening above the vent hole 112 and flows out through the buffer area and the second opening; when the air pressure inside the accommodating cavity 140 is greater than the air pressure outside, the airflow direction is as shown in FIG. Fig.10 In the direction indicated by the middle arrow, air flow enters from the second opening below the vent hole 112 and flows out through the buffer area and the first opening.

[0047] In order to prevent dust outside the accommodating cavity 140 from entering the accommodating cavity 140 along with the airflow, a dust collecting structure 190 may be provided on at least one of the first sealing member 131 and the second sealing member 134. The dust collecting structure 190 may be dust collecting glue. The dust collecting structure 190 may be provided at the free ends of the first sealing member 131 and the second sealing member 134. The dust collecting structure 190 may adhere to dust carried in the airflow, thereby playing a role in purifying the airflow.

[0048] like Figures 8 to 10 As shown, the camera module may further include a first pressure sensor 200, a second pressure sensor 210 and a controller. The first pressure sensor 200 is disposed inside the accommodating cavity 140, and may be specifically disposed on a surface of the mounting base 110 close to the accommodating cavity 140. The first pressure sensor 200 is used to detect the air pressure inside the accommodating cavity 140. The second pressure sensor 210 is disposed outside the accommodating cavity 140, and may be specifically disposed on a surface of the mounting base 110 away from the accommodating cavity 140. The second pressure sensor 210 is used to detect the air pressure outside the accommodating cavity 140. The controller is connected to the first pressure sensor 200, the second pressure sensor 210, the first blocking member 131 and the second blocking member 134, respectively.

[0049] The controller can obtain the pressure values ​​detected by the first pressure sensor 200 and the second pressure sensor 210. When the pressure difference between the inside and outside of the accommodating chamber 140 is greater than a preset threshold, the controller energizes the first blocking member 131 and the second blocking member 134 respectively to control the opening of the vent 112. When the pressure difference between the inside and outside of the accommodating chamber 140 is not greater than the preset threshold, the controller can control the first blocking member 131 and the second blocking member 134 to be in a non-energized state to control the closing of the vent 112.

[0050] Please refer to Figures 1 to 10 , the embodiment of the present application also discloses an electronic device, and the disclosed electronic device may include a device housing and the above-mentioned camera module, and the camera module is installed in the device housing. The electronic device may also be referred to as a mobile device, a terminal device, a mobile terminal or a terminal. The electronic device includes but is not limited to a handheld device, a vehicle-mounted device, a wearable device, a computing device or other processing device connected to a wireless modem. For example, the electronic device may include a smart watch, a smart bracelet, a smart phone, a personal digital assistant computer, a tablet computer, a laptop computer, a vehicle-mounted computer, smart glasses, a game console, a driving recorder, a security monitoring, a camera, a video recorder, a camera, an intelligent robot or other electronic devices with a camera that require an air vent anti-blocking design.

[0051] From the above description, it can be known that the camera module disclosed in the embodiment of the present application improves the relevant technology. The camera module includes a mounting seat 110, a filter 120 and a uniform pressure portion 130. The mounting seat 110 is provided with a light-transmitting hole 111 and a vent 112. The filter 120 covers the light-transmitting hole 111 and together with the mounting seat 110, forms a accommodating cavity 140. The vent 112 connects the inside and the outside of the accommodating cavity 140. At least a part of the uniform pressure portion 130 is arranged in the vent 112, and the uniform pressure portion 130 can control the opening and closing of the vent 112. When the pressure difference between the inside and outside of the accommodating cavity 140 is greater than a preset threshold, the pressure equalizing portion 130 can control the vent 112 to be in an open state, so that the air pressure inside and outside the accommodating cavity 140 is balanced, thereby avoiding deformation, rupture and other problems of the filter 120; when the pressure difference between the inside and outside of the accommodating cavity 140 is not greater than a preset threshold, the pressure equalizing portion 130 can control the vent 112 to be in a closed state, thereby preventing water, dust and other debris from invading the interior of the mounting base 110, thereby improving the dustproof and waterproof performance of the electronic equipment.

[0052] The above embodiments of the present application focus on describing the differences between the various embodiments. As long as the different technical features between the various embodiments are not contradictory, they can be combined to form more specific embodiments. Considering the simplicity of the text, they will not be repeated here.

[0053] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A camera module, characterized in that: The optical filter comprises a mounting seat, an optical filter and a uniform pressure portion, wherein the mounting seat is provided with a light-transmitting hole and an air vent, the optical filter cover is arranged on the light-transmitting hole and forms a receiving cavity together with the mounting seat, the air vent communicates the inside and the outside of the receiving cavity, and at least a part of the uniform pressure portion is arranged in the air vent; When the pressure difference between the inside and outside of the accommodating chamber is greater than a preset threshold, the pressure equalizing unit controls the vent to be in an open state; when the pressure difference between the inside and outside of the accommodating chamber is not greater than the preset threshold, the pressure equalizing unit controls the vent to be in a closed state.

2. The camera module according to claim 1, characterized in that: The pressure-equalizing portion includes a first blocking member, at least a portion of which is disposed in the vent hole, and the first blocking member has a first position and a second position; When the first blocking member is in the first position, the first blocking member blocks the vent hole so that the vent hole is in the closed state; When the first blocking member is in the second position, a flow gap is provided between the first blocking member and the vent hole, so that the vent hole is in the open state.

3. The camera module according to claim 2, characterized in that: The mounting seat is provided with a mounting groove, the mounting groove is communicated with the vent hole, and the first blocking member is used to move in the mounting groove to switch between the first position and the second position.

4. The camera module according to claim 3, characterized in that: The pressure-equalizing portion further includes an elastic member, which is disposed in the mounting groove and elastically supported between the groove wall of the mounting groove and the first blocking member, and is used to provide an elastic preload force to the first blocking member so that the first blocking member is in the first position.

5. The camera module according to claim 4, characterized in that: The mounting groove comprises a first groove body, the first groove body is communicated with the vent hole, the first blocking member is slidably connected with the first groove body, and the elastic member is arranged in the first groove body and elastically supported between the groove bottom of the first groove body and the first blocking member; When the first blocking member is in the first position, at least a portion of the first blocking member extends from the first groove body into the vent hole; When the first blocking member is in the second position, at least a portion of the first blocking member is retracted from the vent hole into the first slot body and compresses the elastic member.

6. The camera module according to claim 5, characterized in that: The vent hole comprises a plurality of hole segments, the plurality of hole segments are zigzagly arranged and interconnected, and the first slot body is connected to at least one of the hole segments.

7. The camera module according to claim 4, characterized in that: The mounting groove includes a second groove body, the second groove body is extended along the circumference of the vent hole and communicated with the vent hole; The two ends of the first blocking member along the first direction extend into the second slot body respectively, and can move in the second slot body along the second direction, the first blocking member has a first end face and a second end face opposite to each other along the second direction, the vent hole has a first opening and a second opening opposite to each other along the second direction, the first end face is close to the first opening, and the second end face is close to the second opening; When the first blocking member is in the first position, the first end surface blocks the first opening, and when the first blocking member is in the second position, a flow gap exists between the first end surface and the first opening; The first direction is the radial direction of the vent hole, and the second direction is the axial direction of the vent hole.

8. The camera module according to claim 7, characterized in that: The elastic member includes a first elastic sheet and a second elastic sheet, wherein the first elastic sheet and the second elastic sheet are both arranged in the second slot body and are respectively located at two sides of the vent hole along the first direction; The first elastic sheet and the second elastic sheet are elastically supported between the groove wall and the second end surface of the second groove body respectively, so that the first blocking member is in the first position; When the first blocking member is in the second position, the second end surface compresses the first elastic sheet and the second elastic sheet respectively.

9. The camera module according to claim 7, characterized in that: The pressure-equalizing portion further includes a one-way valve, the first blocking member is provided with a mounting hole penetrating the first end surface and the second end surface, the one-way valve is arranged in the mounting hole, and the flow direction of the one-way valve is toward the first opening; When the pressure difference between the inside and the outside of the accommodating chamber is greater than a preset threshold, the one-way valve is in an open state.

10. The camera module according to claim 7, characterized in that: The pressure-equalizing portion further includes a guide post, which is disposed in the second slot body and extends along the second direction. The guide post passes through the guide hole of the first blocking member and is slidably matched with the guide hole.

11. The camera module according to claim 7, characterized in that: The first blocking member is an electrodeformable structure and includes a fixed end and a free end, and the elastic member is elastically supported between the groove wall of the second groove body and the fixed end; When the first blocking member is powered on, the free end of the first blocking member is bent in a direction away from the first opening, so that the first blocking member is in the second position.

12. The camera module according to claim 11, characterized in that: The mounting slot further includes a third slot body, the third slot body is extended along the circumference of the vent hole and is in communication with the vent hole, the second slot body is close to the first opening, the third slot body is close to the second opening, and the area of ​​the vent hole between the second slot body and the third slot body is a buffer area; The pressure-equalizing portion further includes a second blocking member, the second blocking member is disposed in the third slot body, the second blocking member has a third end face and a fourth end face opposite to each other along the second direction, the third end face is close to the second opening, and the fourth end face is close to the buffer cavity, the second blocking member includes a fixed end and a free end, and the elastic member is disposed between the fixed end of the second blocking member and the slot wall of the third slot body; When the second blocking member is energized, the free end of the second blocking member is bent in a direction away from the second opening.

13. The camera module according to claim 12, characterized in that: At least one of the first blocking member and the second blocking member is provided with a dust collecting structure, and the dust collecting structure is used to adhere to dust carried in the airflow.

14. An electronic device, characterized in that: It comprises a device housing and the camera module according to any one of claims 1 to 13, wherein the camera module is installed in the device housing.

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