PCB (Printed Circuit Board) mounting and fixing structure on MEMS (Micro Electro Mechanical System) inertial measurement unit

Abstract

The utility model discloses a PCB (Printed Circuit Board) mounting and fixing structure on an MEMS (Micro Electro Mechanical System) inertial measurement unit, which belongs to the technical field of inertial measurement units and comprises a bottom plate, a top plate, an acceleration side plate, an X-direction gyroscope plate, a Y-direction gyroscope plate and an interface plate, the acceleration side plate, the X-direction gyroscope plate, the Y-direction gyroscope plate and the interface plate are arranged between the bottom plate and the top plate and are arranged in a rectangular shape, and the two ends of the acceleration side plate, the two ends of the X-direction gyroscope plate, the two ends of the Y-direction gyroscope plate and the two ends of the interface plate are connected with the bottom plate and the top plate in an inserted mode respectively. The beneficial effects of the utility model are that: it is convenient to adhere and fix, does not need to consider the design of opposite fixing holes, can be formed independently, can be tested temporarily when the gluing mode is unavailable, and the cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to inertial measurement unit technical field more specifically, it relates to a kind of PCB mounting fixed structure on MEMS inertial measurement unit. BACKGROUND

[0002] MEMS inertial measurement unit is a kind of sensor device based on micro electro mechanical system (MEMS) technology, for measuring the motion state of object, including acceleration, angular velocity and direction etc. It is widely used in navigation, aerospace, automobile, robot, consumer electronics etc. field, is indispensable key component in many modern equipment.

[0003] PCB (printed circuit board) of inertial measurement unit (IMU) is the substrate for installing, connecting and protecting MEMS sensor and related electronic components, IMU needs to be physically installed and fixed by PCB, to ensure that IMU can be stably installed on it, while avoiding measurement error due to mechanical stress, but the existing PCB mounting fixed structure has the following problems:

[0004] 1, need to consider the design relative fixed hole;

[0005] 2, cannot be independently formed, when adhesive method is not available, cannot temporarily test, and cost is higher. UTILITY MODEL CONTENT

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a kind of PCB mounting fixed structure on MEMS inertial measurement unit.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A kind of PCB mounting fixed structure on MEMS inertial measurement unit, including bottom plate, top plate, acceleration side plate, X direction gyro plate, Y direction gyro plate and interface plate, and bottom plate is placed in top plate directly below and parallel with top plate, acceleration side plate, X direction gyro plate, Y direction gyro plate and interface plate are placed between bottom plate and top plate and present rectangular arrangement, the both ends of acceleration side plate, the both ends of X direction gyro plate, the both ends of Y direction gyro plate and the both ends of interface plate are respectively inserted with bottom plate and top plate.

[0009] Further, the two ends of the acceleration side plate, the two ends of the X gyroscope plate, the two ends of the Y gyroscope plate and the two ends of the interface plate are connected with plug-in protrusions, the bottom plate and the top plate are provided with a first insertion slot, a second insertion slot, a third insertion slot and a fourth insertion slot, the first insertion slot on the bottom plate and the first insertion slot on the top plate are respectively plugged with the plug-in protrusions at the two ends of the acceleration side plate, the second insertion slot on the bottom plate and the second insertion slot on the top plate are respectively plugged with the plug-in protrusions at the two ends of the X gyroscope plate, the third insertion slot on the bottom plate and the third insertion slot on the top plate are respectively plugged with the plug-in protrusions at the two ends of the Y gyroscope plate, and the fourth insertion slot on the bottom plate and the fourth insertion slot on the top plate are respectively plugged with the plug-in protrusions at the two ends of the interface plate.

[0010] Further, the first insertion slot, the second insertion slot, the third insertion slot and the fourth insertion slot are filled with glue, the first insertion slot, the second insertion slot, the third insertion slot and the fourth insertion slot on the bottom plate are respectively fixed with the plug-in protrusions at one end of the acceleration side plate, one end of the X gyroscope plate, one end of the Y gyroscope plate and one end of the interface plate through the glue, and the first insertion slot, the second insertion slot, the third insertion slot and the fourth insertion slot on the top plate are respectively fixed with the plug-in protrusions at the other end of the acceleration side plate, the other end of the X gyroscope plate, the other end of the Y gyroscope plate and the other end of the interface plate through the glue.

[0011] Further, one end of the acceleration side plate, one end of the X gyroscope plate, one end of the Y gyroscope plate and one end of the interface plate are welded on the bottom plate, and the other end of the acceleration side plate, the other end of the X gyroscope plate, the other end of the Y gyroscope plate and the other end of the interface plate are welded on the top plate.

[0012] By adopting the above technical scheme, the application has the following beneficial effects:

[0013] 1. The glue fixing is convenient, and the relative fixing holes do not need to be considered.

[0014] 2. The structure can be independently formed, and when the glue fixing method cannot be used, the structure can be temporarily tested, and the cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 The figure is a structural schematic diagram of an embodiment of the application.

[0016] Fig. 2 The figure is a structural schematic diagram of the cooperation of the acceleration side plate, the X gyroscope plate, the Y gyroscope plate, the interface plate and the bottom plate.

[0017] In the figure, the bottom plate 1, the top plate 2, the acceleration side plate 3, the X gyroscope plate 4, the Y gyroscope plate 5, the interface plate 6, the first insertion slot 101, the second insertion slot 102, the second insertion slot 103, the second insertion slot 104 and the plug-in protrusion 7. DETAILED DESCRIPTION

[0018] Reference Figs. 1-2 Further illustrate the embodiments of the utility model.

[0019] A PCB mounting and fixing structure on a MEMS inertial measurement unit, including bottom plate 1, top plate 2, acceleration side plate 3, X direction gyro plate 4, Y direction gyro plate 5 and interface plate 6, and bottom plate 1 is placed directly below top plate 2 and parallel with top plate 2, acceleration side plate 3, X direction gyro plate 4, Y direction gyro plate 5 and interface plate 6 are placed between bottom plate 1 and top plate 2 and present rectangular arrangement, both ends of acceleration side plate 3, both ends of X direction gyro plate 4, both ends of Y direction gyro plate 5 and both ends of interface plate 6 correspond with bottom plate 1 and top plate 2 respectively, both ends of acceleration side plate 3, both ends of X direction gyro plate 4, both ends of Y direction gyro plate 5 and both ends of interface plate 6 are all connected with plug-in protrusion 7, first slot 101, second slot 102, third slot 103 and fourth slot 104 are all opened on bottom plate 1 and top plate 2, the first slot 101 on bottom plate 1 and the first slot 101 on top plate 2 are respectively plugged with the plug-in protrusion 7 of both ends of acceleration side plate 3, the second slot 102 on bottom plate 1 and the second slot 102 on top plate 2 are respectively plugged with the plug-in protrusion 7 of both ends of X direction gyro plate 4, the third slot 103 on bottom plate 1 and the third slot 103 on top plate 2 are respectively plugged with the plug-in protrusion 7 of both ends of Y direction gyro plate 5, the fourth slot 104 on bottom plate 1 and the fourth slot 104 on top plate 2 are respectively plugged with the plug-in protrusion 7 of both ends of interface plate 6.

[0020] Glue is filled in first slot 101, second slot 102, third slot 103 and fourth slot 104, the first slot 101, second slot 102, third slot 103 and fourth slot 104 on bottom plate 1 are respectively fixed with the plug-in protrusion 7 of one end of acceleration side plate 3, the plug-in protrusion 7 of one end of X direction gyro plate 4, the plug-in protrusion 7 of one end of Y direction gyro plate 5 and the plug-in protrusion 7 of one end of interface plate 6 through glue, improve the connection strength with bottom plate 1, the first slot 101, second slot 102, third slot 103 and fourth slot 104 on top plate 2 are respectively fixed with the plug-in protrusion 7 of the other end of acceleration side plate 3, the plug-in protrusion 7 of the other end of X direction gyro plate 4, the plug-in protrusion 7 of the other end of Y direction gyro plate 5 and the plug-in protrusion 7 of the other end of interface plate 6 through glue, improve the connection strength with top plate 2.

[0021] Working principle: the acceleration side plate 3, the X direction gyro plate 4, the Y direction gyro plate 5 and the interface plate 6 are respectively used for installing the accelerometer, the X direction gyroscope, the Y direction gyroscope and the interface circuit, the bottom plate 1 and the top plate 2 are used for installing and fixing the acceleration side plate 3, the X direction gyro plate 4, the Y direction gyro plate 5 and the interface plate 6, the first slot 101, the second slot 102, the third slot 103 and the fourth slot 104 on the bottom plate 1 and the first slot 101, the second slot 102, the third slot 103 and the fourth slot 104 on the top plate 2 are convenient for the acceleration side plate 3, the X direction gyro plate 4, the Y direction gyro plate 5 and the interface plate 6 to be inserted on the bottom plate 1 and the top plate 2 through the insertion protrusions 7 on them, so that the bottom plate 1, the top plate 2, the acceleration side plate 3, the X direction gyro plate 4, the Y direction gyro plate 5 and the interface plate 6 are independently formed, when the adhesive method cannot be used, temporary testing can be carried out, when the acceleration side plate 3, the interface plate 6, the X direction gyro plate 4 and the Y direction gyro plate 5 are welded by using the welding equipment, the first slot 101, the second slot 102, the third slot 103 and the fourth slot 104 on the bottom plate 1 and the first slot 101, the second slot 102, the third slot 103 and the fourth slot 104 on the top plate 2 are convenient for assisting the fixation of the acceleration side plate 3, the X direction gyro plate 4, the Y direction gyro plate 5 and the interface plate 6, the welding is convenient, and the connection and assembly of the whole PCB mounting and fixing structure are realized.

[0022] At the same time, the first slot 101, the second slot 102, the third slot 103 and the fourth slot 104 are filled with glue, which is convenient for the acceleration side plate 3, the X direction gyro plate 4, the Y direction gyro plate 5 and the interface plate 6 to be fixed on the bottom plate 1 and the top plate 2 by gluing, without considering the design of the relative fixing hole, the installation and fixation of the PCB mounting and fixing structure are convenient, the process is simple, the materials used are simple, the assembly cost of the whole PCB mounting and fixing structure is low, and finally the PCB mounting and fixing structure is conveniently fixed by gluing, without considering the design of the relative fixing hole, and the PCB mounting and fixing structure can be independently formed, temporary testing can be carried out when the adhesive method cannot be used, without wasting manpower and material resources to fix the PCB mounting and fixing structure before testing, so as to reduce the cost.

[0023] One end of the acceleration side plate 3, one end of the X direction gyro plate 4, one end of the Y direction gyro plate 5 and one end of the interface plate 6 are welded on the bottom plate 1, and the other end of the acceleration side plate 3, the other end of the X direction gyro plate 4, the other end of the Y direction gyro plate 5 and the other end of the interface plate 6 are welded on the top plate 2.

[0024] The acceleration side plate 3, the X-direction gyro plate 4, the Y-direction gyro plate 5 and the interface plate 6 are welded with the bottom plate 1 and the top plate 2 through the first slot 101, the second slot 102, the third slot 103 and the fourth slot 104 on the bottom plate 1 and the first slot 101, the second slot 102, the third slot 103 and the fourth slot 104 on the top plate 2, so that the acceleration side plate 3, the X-direction gyro plate 4, the Y-direction gyro plate 5, the interface plate 6, the bottom plate 1 and the top plate 2 are quickly welded and fixed, which is beneficial to the quick forming of the PCB mounting and fixing structure, meanwhile, the further welding fixing mode strengthens the connection strength of the PCB mounting and fixing structure and improves the stability.

[0025] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any common change and replacement within the technical scheme of the present application should be included in the protection scope of the present application.

Claims

1. A PCB mounting fixation structure on a MEMS inertial measurement unit, characterized by, It includes a base plate (1), a top plate (2), an acceleration side plate (3), an X-axis gyroscope plate (4), a Y-axis gyroscope plate (5), and an interface plate (6). The base plate (1) is placed directly below the top plate (2) and parallel to the top plate (2). The acceleration side plate (3), the X-axis gyroscope plate (4), the Y-axis gyroscope plate (5), and the interface plate (6) are placed between the base plate (1) and the top plate (2) and arranged in a rectangular pattern. The two ends of the acceleration side plate (3), the two ends of the X-axis gyroscope plate (4), the two ends of the Y-axis gyroscope plate (5), and the two ends of the interface plate (6) are respectively inserted into the base plate (1) and the top plate (2).

2. The PCB mounting and fixing structure on a MEMS inertial measurement unit according to claim 1, characterized in that, Both ends of the acceleration side plate (3), both ends of the X-axis gyroscope plate (4), both ends of the Y-axis gyroscope plate (5) and both ends of the interface plate (6) are connected to plug-in protrusions (7), and the bottom plate (1) and the top plate (2) are provided with a first slot (101), a second slot (102), a third slot (103) and a fourth slot (104). The first slot (101) on the base plate (1) and the first slot (101) on the top plate (2) are respectively inserted into the insertion protrusions (7) at both ends of the acceleration side plate (3). The second slot (102) on the base plate (1) and the second slot (102) on the top plate (2) are respectively inserted into the insertion protrusions (7) at both ends of the X-axis gyroscope plate (4). The third slot (103) on the base plate (1) and the third slot (103) on the top plate (2) are respectively inserted into the insertion protrusions (7) at both ends of the Y-axis gyroscope plate (5). The fourth slot (104) on the base plate (1) and the fourth slot (104) on the top plate (2) are respectively inserted into the insertion protrusions (7) at both ends of the interface plate (6).

3. The PCB mounting and fixing structure on a MEMS inertial measurement unit according to claim 2, characterized in that, The first slot (101), the second slot (102), the third slot (103), and the fourth slot (104) are all filled with glue. The first slot (101), the second slot (102), the third slot (103), and the fourth slot (104) on the base plate (1) are respectively glued to the insertion protrusion (7) at one end of the acceleration side plate (3), the insertion protrusion (7) at one end of the X-axis gyroscope plate (4), the insertion protrusion (7) at one end of the Y-axis gyroscope plate (5), and the insertion protrusion (7) at one end of the interface plate (6). The first slot (101), the second slot (102), the third slot (103) and the fourth slot (104) on the top plate (2) are respectively glued to the insertion protrusion (7) at the other end of the acceleration side plate (3), the insertion protrusion (7) at the other end of the X-axis gyroscope plate (4), the insertion protrusion (7) at the other end of the Y-axis gyroscope plate (5) and the insertion protrusion (7) at the other end of the interface plate (6).

4. The PCB mounting and fixing structure on a MEMS inertial measurement unit according to claim 3, characterized in that, One end of the acceleration side plate (3), one end of the X-axis gyroscope plate (4), one end of the Y-axis gyroscope plate (5), and one end of the interface plate (6) are all welded to the base plate (1). The other end of the acceleration side plate (3), the other end of the X-axis gyroscope plate (4), the other end of the Y-axis gyroscope plate (5) and the other end of the interface plate (6) are all welded to the top plate (2).

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