Shell structure of inertial measurement unit

Abstract

The utility model discloses a shell structure of an inertial measurement unit, which comprises a base and a shell, the shell comprises a channel which is convenient for a connecting line on the inertial measurement unit to penetrate out, glue is filled in the channel, the shell comprises an outer shell and an inner shell, the base is provided with the inertial measurement unit arranged in the inner shell, and the inertial measurement unit is arranged in the inner shell. The inner wall of the top of the outer shell is connected with a first elastic pad abutting against the outer wall of the top of the inner shell, the outer shell is connected with a mounting plate, the mounting plate is provided with a first mounting hole, the inner shell is connected with a sealing plate arranged around the inertial measurement unit, and the base is provided with a second mounting hole in bolted connection with the first mounting hole and a positioning groove in clamped connection with the sealing plate. An elastic sealing gasket abutting against the sealing plate is arranged in the positioning groove. The utility model has the beneficial effects that the inertial measurement unit can be conveniently assembled in the shell to protect the inertial measurement unit, the assembly sealing performance of the inertial measurement unit is ensured, the assembly stability of the inertial measurement unit does not influence the subsequent use, and the assembly effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of inertial measurement unit, more specifically, it relates to a shell structure of inertial measurement unit. BACKGROUND

[0002] Inertial measurement unit (IMU) is a device for measuring the three-axis attitude angle (or angular rate) and acceleration of an object, generally, an IMU contains three single-axis accelerometers and three single-axis gyroscopes, the accelerometer detects the acceleration signal of the object on the independent three-axis of the carrier coordinate system, and the gyroscope detects the angular velocity signal of the carrier relative to the navigation coordinate system, measures the angular velocity and acceleration of the object in three-dimensional space, and calculates the attitude of the object, which has important application value in navigation.

[0003] The utility model discloses a mounting structure of inertial measurement unit, the utility model discloses a mounting structure of inertial measurement unit, through installing the inertial measurement unit on the support seat, the first clamping groove is symmetrically set up on the inner wall of the base, the second clamping groove is symmetrically set up on the other two sides of the inner wall of the base, the top and bottom in the first clamping groove and the second clamping groove are symmetrically provided with elastic shock absorber, the convex block of support seat is clamped between the elastic shock absorber set in the first clamping groove and the second clamping groove, when the base is fixed through the mounting seat and vibrates, the inertial measurement unit on the support seat can be damped under the action of the elastic shock absorber, thereby reducing the influence of external force on the inertial measurement unit, the air bag is arranged at the bottom of the support seat, and the air bag can also be inflated to support the bottom of the inertial measurement unit through the through groove in the support seat, so that the inertial measurement unit can be damped when vibrating under external force, thereby realizing double damping, improving the damping effect and reducing the influence of external force.

[0004] But in the prior art, it is inconvenient to assemble the inertial measurement unit in the shell to protect the inertial measurement unit while ensuring the assembly sealing of the inertial measurement unit, the assembly effect is not good, and in the above technical scheme, the top cover is connected with the base through the rubber ring connected with the connecting neck sleeve on the top cover, the connection is not firm, the top cover and the base are easy to separate during subsequent use, and the assembly stability of the inertial measurement unit is reduced. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a shell structure of inertial measurement unit.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The shell structure of an inertial measurement unit comprises a base and a shell, the base is provided with an inertial measurement unit arranged in the shell, the shell comprises a channel for facilitating the connection line of the inertial measurement unit to pass out, the channel is filled with glue, the shell comprises an outer shell and an inner shell, the inertial measurement unit is arranged in the inner shell, a first elastic pad is connected to the inner wall of the top of the outer shell and abuts against the outer wall of the top of the inner shell, a mounting plate is connected to the outer shell and surrounds the outer shell, the mounting plate is provided with a first mounting hole, a sealing plate is connected to the inner shell and surrounds the inertial measurement unit, the base is provided with a second mounting hole matched with the first mounting hole and a positioning groove matched with the sealing plate, the first mounting hole and the second mounting hole are bolted, the sealing plate is clamped with the positioning groove, and the positioning groove is provided with an elastic sealing pad abutting against the sealing plate.

[0008] Further, a chamber is formed between the outer shell and the inner shell, the base is provided with a glue pouring hole communicated with the chamber, the chamber is filled with heat-conducting pouring glue, the heat-conducting pouring glue enters the chamber through the glue pouring hole, and the glue pouring hole is also filled with the heat-conducting pouring glue, and the glue in the channel is also the heat-conducting pouring glue.

[0009] Further, the base is provided with a second elastic pad abutting against the bottom of the inertial measurement unit.

[0010] Further, the base, the inner shell and the outer shell are made of aluminum alloy material with good heat-conducting performance.

[0011] By adopting the above technical scheme, the inertial measurement unit can be conveniently assembled in the shell to protect the inertial measurement unit, the assembly sealing performance of the inertial measurement unit is ensured, the assembly stability of the inertial measurement unit is ensured, the subsequent use is not affected, and the assembly effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a structural schematic view of the embodiment of the utility model.

[0013] Fig. 2 It is a structural schematic view of the cooperation of the outer shell and the inner shell.

[0014] In the figure: base 100, shell 200, inertial measurement unit 300, channel 2001, outer shell 2002, inner shell 2003, first elastic pad 1, mounting plate 2, first mounting hole 3, sealing plate 4, second mounting hole 5, positioning groove 6, elastic sealing pad 7, chamber 8, glue pouring hole 9, heat-conducting pouring glue 10, second elastic pad 11. PREFERRED EMBODIMENT

[0015] Reference Figs. 1-2 The embodiment of the utility model is further explained.

[0016] The application discloses a shell structure of an inertial measurement unit, which comprises a base 100 and a shell 200, the base 100 is provided with an inertial measurement unit 300 arranged in the shell 200, the shell 200 comprises a channel 2001 for facilitating the connection line of the inertial measurement unit 300 to pass out, the channel 2001 is filled with glue, so as to seal the channel 2001 by the glue and ensure the sealing of the shell 200, the shell 200 comprises an outer shell 2002 and an inner shell 2003, the base 100, the inner shell 2003 and the outer shell 2002 are all made of aluminum alloy material with good heat conduction performance, so as to facilitate heat dissipation of the inertial measurement unit 300 and not affect the normal use of the inertial measurement unit 300, the inertial measurement unit 300 is arranged in the inner shell 2003, a first elastic pad 1 is connected to the inner wall of the top of the outer shell 2002 and abuts against the outer wall of the top of the inner shell 2003, an installation plate 2 is connected to the outer shell 2002 and surrounds the outer shell 2002, the installation plate 2 is integrally formed with the outer shell 2002, a first installation hole 3 is formed in the installation plate 2, a sealing plate 4 is connected to the inner shell 2003 and surrounds the inertial measurement unit 300, the sealing plate 4 is integrally formed with the inner shell 2003, a second installation hole 5 matched with the first installation hole 3 and a positioning groove 6 matched with the sealing plate 4 are formed in the base 100, the first installation hole 3 and the second installation hole 5 are connected by bolts, the sealing plate 4 is clamped in the positioning groove 6, and an elastic sealing pad 7 abutting against the sealing plate 4 is arranged in the positioning groove 6.

[0017] When the inertial measurement unit 300 is assembled in the shell 200, the inertial measurement unit 300 is arranged on the base 100, then the inner shell 2003 covers the inertial measurement unit 300 and the sealing plate 4 is clamped in the positioning groove 6 of the base 100, so that the inner shell 2003 is preliminarily fixed on the base 100 and the inertial measurement unit 300 is limited in the inner shell 2003, then the outer shell 2002 covers the inner shell 2003 and the first installation hole 3 on the installation plate 2 corresponds to the second installation hole 5 on the base 100, the outer shell 2002 is fixed on the base 100 by bolt connection of the first installation hole 3 and the second installation hole 5, at this time, the first elastic pad 1 abutting against the outer wall of the inner shell 2003 tightly abuts the inner shell 2003 against the base 100, so that the inner shell 2003 is more firmly fixed on the base 100 and the inertial measurement unit 300 is stably fixed in the inner shell 2003, the stable assembly of the inertial measurement unit 300 in the shell 200 is realized, the assembly operation is simple, the connection line of the inertial measurement unit 300 passes out of the shell 200 through the channel 2001, the channel 2001 is sealed by filling the glue in the channel 2001, so as to avoid the influence of the channel 2001 on the sealing of the shell 200, the setting of the outer shell 2002 and the inner shell 2003 improves the protection effect on the inertial measurement unit 300 and reduces the influence of external force on the inertial measurement unit 300.

[0018] The first elastic pad 1 presses the inner shell 2003 downward when the first elastic pad 1 abuts against the outer wall of the inner shell 2003, so that the sealing plate 4 abuts against the elastic sealing pad 7 in the positioning groove 6, and the sealing of the inertial measurement unit 300 by the inner shell 2003 is realized. The sealing performance of the inertial measurement unit 300 assembled with the shell 200 is further improved by the arrangement of the outer shell 2002. Finally, the inertial measurement unit 300 is conveniently assembled in the shell 200 to protect the inertial measurement unit 300, the sealing performance of the inertial measurement unit 300 is ensured, the assembly of the inertial measurement unit 300 is stable, and the subsequent use is not affected, and the assembly effect is improved.

[0019] The chamber 8 is formed between the outer shell 2002 and the inner shell 2003, the glue pouring hole 9 communicating with the chamber 8 is formed in the base 100, and the heat-conducting pouring glue 10 is filled in the chamber 8. The heat-conducting pouring glue 10 enters the chamber 8 through the glue pouring hole 9, and the heat-conducting pouring glue 10 is also filled in the glue pouring hole 9. The glue in the channel 2001 is also heat-conducting pouring glue 10, so as to conveniently seal the channel 2001 and not affect the heat dissipation of the inertial measurement unit 300.

[0020] The chamber 8 between the outer shell 2002 and the inner shell 2003 is filled with heat-conducting pouring glue 10, which enhances the shock absorption effect of the shell 200, improves the protection of the inertial measurement unit 300, and improves the heat dissipation of the inertial measurement unit 300 after the heat-conducting pouring glue 10 is solidified. At the same time, the heat-conducting pouring glue 10 enhances the connection strength between the outer shell 2002 and the inner shell 2003 and the connection strength between the shell 200 and the base 100, improves the assembly stability of the inertial measurement unit 300 and the shell 200, and the chamber 8 and the glue pouring hole 9 are filled with heat-conducting pouring glue 10, which enhances the sealing performance of the assembly of the inertial measurement unit 300 and improves the assembly effect. The arrangement of the glue pouring hole 9 facilitates the filling of the heat-conducting pouring glue 10 into the chamber 8, which is beneficial to the convenience of the assembly of the inertial measurement unit 300 and the shell 200.

[0021] The second elastic pad 11 abutting against the bottom of the inertial measurement unit 300 is connected to the base 100. When the first elastic pad 1 abutting against the outer wall of the inner shell 2003 presses the inner shell 2003 tightly on the base 100, the top and the bottom of the inertial measurement unit 300 abut against the inner wall of the top of the inner shell 2003 and the second elastic pad 11 respectively, so that the second elastic pad 11 cooperates with the inner shell 2003 to better fix the inertial measurement unit 300 in the inner shell 2003, and the assembly stability of the inertial measurement unit 300 is improved.

[0022] The elastic sealing gasket 7, the first elastic gasket 1 and the second elastic gasket 11 are composed of graphene and natural rubber polymer materials, so that the first elastic gasket 1 and the second elastic gasket 11 have shock absorption and heat conduction performance, do not affect heat dissipation of the inertial measurement unit 300, and improve the shock absorption effect of the shell 200, improve the protection effect of the shell 200 on the inertial measurement unit 300, and the graphene and natural rubber polymer materials make the elastic sealing gasket 7 facilitate heat transfer from the inner shell 2003 to the base 100 to dissipate, so as not to affect heat dissipation of the inertial measurement unit 300.

[0023] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any change or replacement within the technical scheme of the present application made by those skilled in the art should be included in the protection scope of the present application.

Claims

1. A housing structure of an inertial measurement unit, comprising a base (100) and a case (200), the base (100) being provided with an inertial measurement unit (300) disposed in the case (200), characterized in that, The shell (200) includes a channel (2001) for facilitating the connection line of the inertial measurement unit (300) to pass out, the channel (2001) is filled with glue, the shell (200) includes an outer shell (2002) and an inner shell (2003), the inertial measurement unit (300) is arranged in the inner shell (2003), and the outer shell (2002) is connected with a first elastic pad (1) on the top inner wall of the outer shell (2002) and abuts against the top outer wall of the inner shell (2003), the outer shell (2002) is connected with a mounting plate (2) arranged around the outer shell (2002), the mounting plate (2) is provided with a first mounting hole (3), the inner shell (2003) is connected with a sealing plate (4) arranged around the inertial measurement unit (300), the base (100) is provided with a second mounting hole (5) matched with the first mounting hole (3) and a positioning groove (6) matched with the sealing plate (4), the first mounting hole (3) and the second mounting hole (5) are bolted, the sealing plate (4) is clamped with the positioning groove (6), and the positioning groove (6) is provided with an elastic sealing pad (7) abutting against the sealing plate (4).

2. The housing structure of an inertial measurement unit according to claim 1, wherein The outer shell (2002) and the inner shell (2003) form a cavity (8), the base (100) is provided with a glue pouring hole (9) communicated with the cavity (8), the cavity (8) is filled with heat-conducting pouring glue (10), the heat-conducting pouring glue (10) enters the cavity (8) through the glue pouring hole (9), and the glue pouring hole (9) is also filled with the heat-conducting pouring glue (10), and the glue in the channel (2001) is also the heat-conducting pouring glue (10).

3. The housing structure of an inertial measurement unit according to claim 2, wherein The base (100) is connected with a second elastic pad (11) abutting against the bottom of the inertial measurement unit (300).

4. The housing structure of an inertial measurement unit according to claim 3, wherein The base (100), the inner shell (2003) and the outer shell (2002) are all made of aluminum alloy material with good heat-conducting performance.

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