Inertial measurement device and movable apparatus

Abstract

The application relates to an inertial measurement device and a movable device, the movable device comprising a body and the inertial measurement device, the inertial measurement device comprising a shell and an inertial measurement assembly, the shell having a containing cavity inside, and the inertial measurement assembly comprising a plug connector; the shell has a mounting surface on one side along a plug direction, the mounting surface is provided with a mounting part protruding outwardly towards the shell, an arrangement space is formed between the mounting part and the mounting surface, the shell has the containing cavity inside, the mounting surface is provided with a through hole communicating with the containing cavity, and a plug part of the plug connector extends out of the mounting surface through the through hole, so that when the plug connector is connected with a connector mounted on the body of the movable device, the mounting part abuts against the body, the body cannot approach the mainboard, the mainboard arranged in the shell is spaced apart from the connector by a large distance, thus electronic interference between the mainboard and the connector can be avoided, meanwhile, the arrangement space can also be used for circuit arrangement, the circuit is prevented from being exposed, and the circuit is effectively protected.

Description

Technical Field

[0001] This application relates to the field of inertial measurement technology, and in particular to an inertial measurement device and a mobile device. Background Technology

[0002] An inertial measurement unit (IMU) is a device that uses sensing elements such as gyroscopes and accelerometers to measure the angular velocity and acceleration of a mobile device in three-dimensional space in real time, and uses this to calculate the attitude of the mobile device. It has important application value in navigation.

[0003] Typically, inertial measurement units (INS) have connectors that mate with the connectors of mobile devices. These connectors interlock to allow the INS to transmit signals to the mobile device's body. However, because the connectors are mounted on a motherboard containing multiple electronic components, the close proximity of the motherboard and connectors when the connectors are plugged in makes it easy for electronic interference to occur between the electronic components on the motherboard and the connectors. In other words, the signals emitted by the electronic components on the motherboard and the connectors can easily interfere with each other, thus affecting the signal transmission of the INS. Utility Model Content

[0004] Based on this, the purpose of this application is to provide an inertial measurement device and a mobile device including the inertial measurement device, so as to solve the problem that when the existing inertial measurement device is connected to the body of the mobile device, the motherboard of the inertial measurement device and the connector on the body are prone to electronic interference, which affects the signal transmission of the inertial measurement device.

[0005] According to one aspect of this application, an inertial measurement device is provided, comprising:

[0006] The housing has a mounting surface on one side along a plugging direction, and a mounting portion protruding outward from the mounting surface, with an arrangement space formed between the mounting portion and the mounting surface; the housing has a receiving cavity, and a through hole communicating with the receiving cavity is opened on the mounting surface, with any edge of the through hole spaced apart from the mounting portion;

[0007] An inertial measurement unit includes a motherboard, a main chip, and a connector. The motherboard is disposed within the receiving cavity. The main chip and the connector are disposed on the motherboard and are interconnected through the motherboard. The plug portion of the connector extends out of the mounting surface through the through hole for connection to the body of a mobile device along the plugging direction.

[0008] In one embodiment, the cavity wall near the end of the through hole is provided with a first step, and the main board is disposed on the first step.

[0009] In one embodiment, the receiving cavity has an opening at the end away from the through hole, and the sidewall of the receiving cavity has a second step at the end near the opening, and a cap is provided on the second step to close the opening.

[0010] In one embodiment, multiple mounting portions are provided at opposite ends of the mounting surface, each mounting portion having a mounting point and / or a guide post. The mounting point is used for fastener connection so that the inertial measurement device and the body of the mobile device are interconnected by the fastener. The guide post is used to provide guidance when the connector is inserted into the body of the mobile device.

[0011] In one embodiment, the guide post includes a first guide post and a second guide post, the first guide post and the second guide post having different diameters.

[0012] In one embodiment, the projection of the main chip and the projection of the connector are offset from each other; wherein, the projection of the main chip is the projection of the main chip on the motherboard along the insertion direction, and the projection of the connector is the projection of the connector on the motherboard along the insertion direction.

[0013] In one embodiment, the perimeter of the connector includes two long sides of the connector that are parallel to a width direction and opposite to each other, and two short sides of the connector that are parallel to a length direction and opposite to each other. The length direction is perpendicular to the width direction and is perpendicular to the insertion direction. The long sides of the connector are perpendicular to the length direction, and the length of the long sides of the connector along the width direction is greater than the length of the short sides of the connector along the width direction.

[0014] The motherboard has a first side and a second side that are opposite to each other and both perpendicular to the length direction. The distance from the center point of the projection of the connector to the first side is greater than the distance to the second side. The projection of the connector is the projection of the connector on the motherboard along the insertion direction.

[0015] In one embodiment, at both ends of the mounting surface, the housing has a first side and a second side disposed opposite to each other, and the distance from the center point of the through hole to the first side is greater than the distance to the second side.

[0016] In one embodiment, the housing is provided with a marking for the user to identify whether the inertial measurement device is inserted in the correct orientation.

[0017] According to another aspect of this application, a mobile device is provided, including a body and an inertial measurement device as described in any of the above embodiments, wherein the body is provided with a connector that is connected to a plug of the inertial measurement device to enable the inertial measurement device to measure the inertial parameters of the mobile device.

[0018] The aforementioned inertial measurement device features a mounting portion protruding outward from the mounting surface of the housing, creating a layout space between the mounting portion and the mounting surface. A through-hole communicating with a receiving cavity of the housing is also provided on the mounting surface. The main board is housed within the receiving cavity, and the plug portion of the connector extends outward from the mounting surface through the through-hole. This design ensures that when the connector is connected to a connector mounted on the mobile device body, the mounting portion abuts against the body, preventing the body from approaching the main board. This creates a significant distance between the main board and the connector within the housing, thus preventing electronic interference between them. Furthermore, this layout space can also be used for wiring, preventing exposed wiring and effectively protecting the circuitry. Attached Figure Description

[0019] Figure 1 An exploded schematic diagram of an inertial measurement device provided in an embodiment of this application.

[0020] Figure 2 Axial view of an inertial measurement device provided in an embodiment of this application Figure 1 .

[0021] Figure 3 A side view of an inertial measurement device provided in an embodiment of this application.

[0022] Figure 4 This is a schematic diagram of the internal structure of the housing in an inertial measurement device provided in an embodiment of this application.

[0023] Figure 5 This is a cross-sectional view of the housing in an inertial measurement device provided in an embodiment of this application.

[0024] Figure 6 Axial view of an inertial measurement device provided in an embodiment of this application Figure 2 .

[0025] Figure 7 A bottom view of an inertial measurement device provided in an embodiment of this application.

[0026] Figure 8 This is a bottom view of the inertial measurement component in an inertial measurement apparatus provided in an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 10. Inertial Measurement Device; 100. Housing; 100a. First Side; 100b. Second Side; 101. Receiving Cavity; 102. Mounting Surface; 103. Through Hole; 103a. Long Side of Through Hole; 103b. Short Side of Through Hole; 104. Mounting Part; 104a. First Mounting Part; 104b. Second Mounting Part; 105. Arrangement Space; 106. Mounting Point; 107. Guide Post; 107a. First Guide Post; 107b. Second Guide Post; 108. Opening; 1 08a, Limiting groove; 109, First step; 1010, Second step; 1011, Long side side; 1012, Short side side; 1012a, First side side; 1012b, Second side side; 1013, Clearance groove; 200, Inertial measurement unit; 210, Main board; 211, First side; 212, Second side; 220, Connector; 221, Long side of connector; 222, Short side of connector; 230, Main chip; 300, Cover; 301, Limiting block. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0030] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0035] This application provides an inertial measurement device applied to a mobile device. The mobile device includes a body and an inertial measurement device. The inertial measurement device is connected to the body to measure the inertial parameters (such as angular velocity or acceleration) of the mobile device when it is in motion, thereby calculating the attitude of the mobile device.

[0036] The structure of the inertial measurement device is described below. It is understood that, in other embodiments, the inertial measurement device of this application can be applied to mobile devices such as automobiles and aircraft, and is not limited thereto.

[0037] In a specific application example, the mobile device of this application refers to a car, and the inertial measurement device is installed on the car's airbag control unit (ACU).

[0038] See Figure 1 , Figure 1 An exploded view of an inertial measurement device 10 provided in an embodiment of this application is shown. Figure 2 An axonometric view of the inertial measurement device 10 is shown. An embodiment of the inertial measurement device 10 provided in this application includes a housing 100 and an inertial measurement assembly 200. The inertial measurement assembly 200 is used to interconnect with the body of a mobile device and transmit data to acquire the inertial parameters of the mobile device in real time; the housing 100 provides support for the inertial measurement assembly 200 or provides a mounting base.

[0039] Specifically, the inertial measurement unit 200 includes a motherboard 210, sensing elements (not shown), a connector 220, and a main chip 230. The motherboard 210 has circuitry, and the main chip 230 and connector 220 are mounted on the motherboard 210. The main chip 230 and connector 220 are communicatively connected via the motherboard 210. The main chip 230 provides inertial measurement data, and the body has a connector for... Figure 3 The inertial measurement unit 200 is connected to the connector on the fuselage along a connection direction (Z direction shown in the figure) so that the inertial measurement unit 200 can be connected to the fuselage, thereby enabling the sensing element integrated in the main chip to measure the inertial parameters of the fuselage (such as angular velocity or acceleration) in real time. For example, the sensing element may be a gyroscope or an accelerometer.

[0040] In one embodiment, such as Figure 2 As shown, the housing 100 has a hollow structure with an internal cavity 101. The housing 100 has a mounting surface 102 on one side along the insertion direction. The mounting surface 102 has a through hole 103 that communicates with the cavity 101. The main board 210 and the connector 220 are both disposed in the cavity 101. The insertion part of the connector 220 extends out of the mounting surface 102 through the through hole 103, so that the connector can pass through the through hole 103 along the insertion direction and be inserted into the connector 220.

[0041] However, as described in the background section, when the inertial measurement device 10 is plugged into the connector mounted on the body of the mobile device, the main chip 230 on the motherboard 210 and other electronic components and the connector will experience electronic interference such as signal interference. Therefore, in order to avoid this phenomenon, in the embodiment provided in this application, the mounting surface 102 is provided with a mounting portion 104 protruding outward toward the housing 100, and an arrangement space 105 is formed between the mounting portion 104 and the mounting surface 102. For example, as shown in the figure, there are two mounting portions 104, which are spaced apart along a length direction perpendicular to the insertion direction (X direction shown in the figure). A through hole 103 is located between the two mounting portions 104, and any edge of the through hole 103 is spaced apart from the mounting portion 104.

[0042] By creating the arrangement space 105, when the connector of the inertial measurement device 10 is connected to the connector mounted on the body, the mounting part 104 contacts the body. Due to the existence of the arrangement space 105, the motherboard 210 and the connector mounted on the body are separated by a large distance by the arrangement space 105, thus effectively reducing electronic interference between the main chip 230 on the motherboard 210 and the connector. Furthermore, since the arrangement space 105 is a large space, it can also be used for wiring, thus avoiding exposed wiring and effectively protecting the wiring.

[0043] It is understood that in other embodiments, the number of mounting portions 104 is not limited to two. There may be multiple mounting portions 104 at both ends of the mounting surface 102, or there may be only one mounting portion 104. A mounting portion 104 may extend in a ring shape along the circumference of the mounting surface 102, as long as it can form an arrangement space 105. There is no limitation on this.

[0044] Further, see Figure 2 Each mounting portion 104 is provided with a mounting point 106, which is used for fastener connection such as screws. For example, the mounting point 106 can be a mounting hole, and the fastener is sequentially inserted into the body of the mobile device and the mounting hole, so that the inertial measurement device 10 is connected to the body by the fastener. In the embodiment shown in the figure, of the two mounting portions 104, the mounting portion 104 provided at one end in the length direction is the first mounting portion 104a, and the mounting portion 104 provided at the opposite end in the length direction is the second mounting portion 104b. The first mounting portion 104a and the second mounting portion 104b are each provided with a mounting point 106, and the two mounting points 106 are diagonally distributed, so that the inertial measurement device 10 can be more securely connected to the body.

[0045] Furthermore, the mounting surface 102 is provided with guide posts 107 protruding from the mounting portion 104 at both ends along its length. The guide posts 107 include a first guide post 107a and a second guide post 107b. In the embodiment shown in the figure, the first guide post 107a and the second guide post 107b are each respectively disposed on a mounting portion 104 and are also diagonally distributed. The first guide post 107a and the second guide post 107b are used to provide guidance when the plug 220 is plugged into the connector on the body, thereby avoiding misalignment when the plug 220 and the connector are plugged into each other, thus ensuring that the two can be plugged into each other effectively and avoiding poor contact.

[0046] Preferably, the diameter of the first guide post 107a is different from the diameter of the second guide post 107b. This design enables the inertial measurement device 10 to have a foolproof function, that is, when the inertial measurement device 10 is inserted into the connector mounted on the machine body along the insertion direction, it can only be inserted in a specific orientation, avoiding the situation where the inertial measurement device 10 or the connector of the machine body is damaged due to incorrect insertion orientation.

[0047] In other embodiments, a mark may be provided on the housing 100 to allow the user to identify whether the insertion orientation is correct. For example, it may be an arrow or a chamfer may be made on one of the edges of the housing 100. No particular limitation is made here.

[0048] It is understandable that the mounting section 104 may only have mounting point 106, or it may only have guide post 107 without mounting point 106; there is no limitation here.

[0049] See Figure 4 and Figure 5 , Figure 4 and Figure 5 A schematic diagram of the internal structure of the housing 100 is shown. As can be seen from the figure, the cavity 101 of the housing 100 has a first step 109 on the cavity wall near the through hole 103. The motherboard 210 is disposed on the first step 109. Since the first step 109 has a certain height, the first step 109 is a certain distance away from the cavity wall of the cavity 101 where the through hole 103 is located. This allows the motherboard 210 to be disposed on the first step 109, so that the motherboard 210 and the connector can be further apart, thereby better avoiding electronic interference between the main chip 230 on the motherboard 210 and the connector.

[0050] In addition, adhesive can be applied to the first step 109 to fix the motherboard 210 to the first step 109, thereby preventing the motherboard 210 from detaching from the first step 109.

[0051] For further information, please refer to [link / reference]. Figure 4 and Figure 5 To facilitate the installation of the inertial measurement unit 200 within the receiving cavity 101, the end of the receiving cavity 101 away from the through hole 103 has an opening 108 communicating with the receiving cavity 101, and the sidewall of the receiving cavity 101 has a second step 1010 at the end near the opening 108, on which are provided a... Figure 6 The cover 300 shown closes the opening 108. As can be seen from the figure, the first step 109 and the second step 1010 are spaced apart, so that there is a certain gap between the motherboard 210 and the cover 300, which allows for better heat dissipation of the electronic components on the motherboard 210.

[0052] like Figure 6 As shown, Figure 6 A schematic diagram of the cover 300 covering the housing 100 is shown. In the embodiment shown in the figure, both the opening 108 and the cover 300 are rectangular. The two adjacent edges of the opening 108 are provided with limiting grooves 108a. The two adjacent edges of the cover 300 are provided with limiting blocks 301 corresponding to the limiting grooves 108a. Each limiting block 301 is limited in a corresponding limiting groove 108a. The purpose of this design is twofold: firstly, when the robotic arm grasps the cover 300 and closes it to the opening 108, it facilitates visual identification to align the limiting block 301 with the limiting groove 108a, thereby making it easy to assemble the cover 300 onto the housing 100; secondly, when the cover 300 is closed onto the housing 100, the limiting block 301 and the limiting groove 108a form an indicator for the user to identify whether the insertion orientation is correct, eliminating the need to cut corners on the edges of the housing 100 that would occupy the receiving cavity 101, and thus eliminating the need to cut corners on the motherboard 210, thereby making fuller use of the space in the receiving cavity 101, which is beneficial to improving the utilization rate of the electronic components on the motherboard 210, and thus allowing the overall volume of the inertial measurement device 10 to be designed to be smaller.

[0053] Of course, the same technical effect can also be achieved by opening a limiting groove 108a on only one edge of the opening 108 and setting a corresponding limiting block 301 on only one edge of the cover 300. This is not limited here.

[0054] See Figure 7 , Figure 7A bottom view of the inertial measurement device 10 is shown. As can be seen from the figure, at both ends of the mounting surface 102, the housing 100 has a first side 100a and a second side 100b arranged opposite each other. Exemplarily, viewed from a bottom view (i.e., a direction perpendicular to the plane of the paper), the housing 100 is rectangular, having two oppositely arranged short-side sides 1012 and two oppositely arranged long-side sides 1011. The two short-side sides 1012 are parallel to a width direction (the Y direction shown in the figure), and the two long-side sides 1011 are parallel to the length direction. The width direction is perpendicular to both the length direction and the insertion direction. The two short-side sides 1012 respectively constitute the first side 100a and the second side 100b of the housing 100. The length of the long side 1011 is greater than the width of the short side 1012. The connector 220 is also rectangular, with two parallel long sides 221 and two parallel short sides 222 arranged opposite each other in the width direction. The long sides 221 are perpendicular to the long side 1011, and their width length is greater than the width length of the short sides 222. Correspondingly, the through hole 103 is also rectangular, with a long side 103a and a short side 103b arranged opposite each other in the length direction. Since the long side 221 is perpendicular to the long side 1011, the long side 103a is also perpendicular to the long side 1011.

[0055] By adopting the above settings, the overall size of the inertial measurement device 10 in the length direction can be effectively reduced, making the inertial measurement device 10 more compact in structure. This can effectively reduce the volume of the inertial measurement device 10, especially when the inertial measurement device 10 is applied to scenarios such as airbags, the smaller inertial measurement device 10 is more suitable for such scenarios.

[0056] It is understood that in other embodiments, the housing 100 and the connector 220, when viewed from below in the figure, can also be trapezoidal, parallelogram, or other shapes with at least two long sides parallel to each other, and are not limited here.

[0057] Furthermore, Figure 8 A bottom view of the inertial measurement unit 200 is shown. Figure 8 In one embodiment, when viewed from below, the motherboard 210 is also rectangular, and the long side 221 of the connector is perpendicular to the long side of the motherboard 210. In a preferred embodiment, the projection of the main chip 230 and the projection of the connector 220 are offset from each other. The projection of the main chip 230 refers to the projection of the main chip 230 on the motherboard 210 along the insertion direction, and the projection of the connector 220 refers to the projection of the connector 220 on the motherboard 210 along the insertion direction.

[0058] In one specific embodiment, the motherboard 210 has a first side 211 and a second side 212 that are arranged opposite each other in the length direction. The distance from the center point of the projection of the connector 220 to the first side 211 is greater than the distance to the second side 212. Optionally, the projection of the main chip 230 is located on the motherboard 210 area between the projection of the connector 220 and the first side 211, so that, as can be seen from the figure, the connector 220 is not located in the center on the motherboard 210. Therefore, through the above design, there is enough space on the motherboard 210 to arrange the main chip 230, so that the projection of the main chip 230 on the motherboard 210 along the insertion direction is staggered from the projection of the connector 220 on the motherboard 210 along the insertion direction. Correspondingly, the two short-side sides 1012 of the housing 100 are defined as the first side 1012a and the second side 1012b, respectively. The first side 1012a constitutes the first side 100a of the housing 100, and the second side 1012b constitutes the second side 100b of the housing 100. The distance from the center point of the through hole 103 to the first side 100a is greater than the distance to the second side 100b. In other words, the through hole 103 is not located in a central position on the surface of the housing 100 where the through hole 103 is located.

[0059] Thus, while ensuring the compact structure of the inertial measurement device 10, the main chip 230 and the connector 220 do not interfere with each other in the insertion direction. Therefore, when the inertial measurement device 10 is inserted into the body of the mobile device, the insertion force applied by the connector 220 to the motherboard 210 will not affect the main chip 230, thereby avoiding damage to the main chip 230 and effectively protecting the main chip 230.

[0060] For other structures of the housing 100, the outer surface of the housing 100 is also provided with a clearance groove 1013. For example, the clearance groove 1013 can be provided at opposite ends of the housing 100, so that the housing 100 can avoid mutual clearance with other modules on the body, and avoid damage to the housing 100 or the body due to mutual interference when they are connected.

[0061] In addition, this application also provides a mobile device, which includes the inertial measurement device 10 as described above. As mentioned above, the mobile device includes a body and a connector mounted on the body, the connector being connected to the plug 220 of the inertial measurement device 10. The specific structure of the inertial measurement device 10 refers to the above embodiments. Preferably, the hardness of the housing 100 of the inertial measurement device 10 can be greater than the hardness of the outer shell of the body, so that when the inertial measurement device 10 and the body collide due to vibration, the structure of the inertial measurement device 10 can be effectively prevented from being damaged. Since the mobile device adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An inertial measurement device, characterized in that, include: The housing has a mounting surface on one side along a plugging direction, and a mounting portion protruding outward from the mounting surface, with an arrangement space formed between the mounting portion and the mounting surface; the housing has a receiving cavity, and a through hole communicating with the receiving cavity is opened on the mounting surface, with any edge of the through hole spaced apart from the mounting portion; An inertial measurement unit includes a motherboard, a main chip, and a connector. The motherboard is disposed within the receiving cavity. The main chip and the connector are disposed on the motherboard and are interconnected through the motherboard. The plug portion of the connector extends out of the mounting surface through the through hole for connection to the body of a mobile device along the plugging direction.

2. The inertial measurement device according to claim 1, characterized in that, The cavity wall near the through hole has a first step, and the main board is disposed on the first step.

3. The inertial measurement device according to claim 2, characterized in that, The receiving cavity has an opening at one end away from the through hole, and the sidewall of the receiving cavity has a second step at one end near the opening. A cap is provided on the second step to close the opening.

4. The inertial measurement device according to claim 1, characterized in that, The mounting surface has multiple mounting portions at opposite ends. Each mounting portion has a mounting point and / or a guide post. The mounting point is used for fastener connection so that the inertial measurement device and the body of the mobile device are connected to each other through the fastener. The guide post is used to provide guidance when the connector is inserted into the body of the mobile device.

5. The inertial measurement device according to claim 4, characterized in that, The guide post includes a first guide post and a second guide post, the first guide post and the second guide post having different diameters.

6. The inertial measurement device according to claim 1, characterized in that, The projection of the main chip and the projection of the connector are offset from each other; wherein, the projection of the main chip is the projection of the main chip on the motherboard along the insertion direction, and the projection of the connector is the projection of the connector on the motherboard along the insertion direction.

7. The inertial measurement device according to claim 1, characterized in that, The four edges of the connector include two long sides of the connector that are parallel to a width direction and opposite to each other, and two short sides of the connector that are parallel to a length direction and opposite to each other. The length direction is perpendicular to the width direction and is also perpendicular to the insertion direction. The long sides of the connector are perpendicular to the length direction, and the length of the long sides of the connector along the width direction is greater than the length of the short sides of the connector along the width direction. The motherboard has a first side and a second side that are opposite to each other and both perpendicular to the length direction. The distance from the center point of the projection of the connector to the first side is greater than the distance to the second side. The projection of the connector is the projection of the connector on the motherboard along the insertion direction.

8. The inertial measurement device according to claim 1 or 7, characterized in that, At both ends of the mounting surface, the housing has a first side and a second side disposed opposite to each other, and the distance from the center point of the through hole to the first side is greater than the distance to the second side.

9. The inertial measurement device according to claim 1, characterized in that, The housing is provided with markings for users to identify whether the inertial measurement device is inserted in the correct direction.

10. A mobile device, characterized in that, The device includes a body and an inertial measurement unit as described in any one of claims 1-9, wherein the body is provided with a connector that is connected to a plug of the inertial measurement unit to enable the inertial measurement unit to measure the inertial parameters of the mobile device.

Images