Damping assembly for inertial measurement device, inertial measurement device and unmanned aerial vehicle

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, and discloses a damping assembly for an inertial measurement device, the inertial measurement device and an unmanned aerial vehicle, the damping assembly comprises a lower support, an upper cover plate, a damping structure and a distance adjusting structure, and the top surface of the lower support is provided with a unit assembly position for placing an inertial measurement unit; the upper cover plate covers the lower support to define a damping cavity, the damping structure is arranged in the damping cavity and used for abutting against the inertial measurement unit, and the distance adjusting structure is used for adjusting the distance between the upper cover plate and the lower support. According to the damping assembly, the inertial measurement device and the unmanned aerial vehicle, the vibration of the inertial measurement unit is reduced, the accuracy of data acquired by the inertial measurement unit is ensured, and different types of damping structures are convenient to replace, so that the expansibility of the damping assembly is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of unmanned aerial vehicles, and particularly relates to a damping assembly for an inertial measurement device, an inertial measurement device and an unmanned aerial vehicle. BACKGROUND

[0002] An inertial measurement unit is a sensor widely used in mobile carriers such as unmanned aerial vehicles, robots and motor vehicles, and is mainly used for detecting the acceleration and attitude angle of the mobile carriers. The detection sensitivity is extremely high, and it is easy to be disturbed by external force. For example, when applied to an unmanned aerial vehicle, the rotation of the propeller of the unmanned aerial vehicle and the body resonance will produce additional noise data. These noises are easy to be captured by the inertial measurement unit, which seriously affects the accuracy of the calculation result. Therefore, it is urgent to design a damping structure suitable for the inertial measurement unit to reduce the influence of the vibration generated by the operation of the mobile carrier such as the unmanned aerial vehicle. CONTENT OF THE UTILITY MODEL

[0003] In view of at least one of the above defects or deficiencies of the prior art, the present application provides a damping assembly for an inertial measurement device, an inertial measurement device and an unmanned aerial vehicle, which can effectively reduce the vibration of the inertial measurement unit, ensure the accuracy of the data collected by the inertial measurement unit, and facilitate the replacement of different types of damping structures.

[0004] In order to achieve the above-mentioned purpose, the present application provides a damping assembly for an inertial measurement device, comprising:

[0005] a lower support, a unit assembly position for placing an inertial measurement unit is arranged on the top surface of the lower support;

[0006] an upper cover plate, covering the lower support to define a damping cavity;

[0007] a damping structure arranged in the damping cavity for abutting the inertial measurement unit; and

[0008] a spacing adjustment structure for adjusting the spacing between the upper cover plate and the lower support.

[0009] In some embodiments, the lower support comprises a bottom plate and a unit assembly plate, the upper cover plate, the unit assembly plate and the bottom plate are arranged in sequence from top to bottom, the unit assembly plate is formed with the unit assembly position, the upper cover plate is provided with a first connecting portion, the bottom plate is provided with a second connecting portion arranged in position with the first connecting portion, and the spacing adjustment structure is connected with the first connecting portion and the second connecting portion respectively.

[0010] In some embodiments, the spacing adjustment structure comprises a telescopic support column, and the two ends of the support column are connected with the first connecting portion and the second connecting portion respectively.

[0011] In some embodiments, the spacing adjustment structure comprises a threaded column and a threaded hole, the threaded hole is arranged in one of the first connecting part and the second connecting part, the threaded column is arranged in the other one of the first connecting part and the second connecting part and passes through the threaded hole to form a threaded fit.

[0012] In some embodiments, the bottom plate comprises a bottom plate body and a plurality of first inclined plates arranged equidistantly in sequence around the circumference of the bottom plate body, the unit assembly plate comprises an assembly plate body and a plurality of second inclined plates arranged equidistantly in sequence around the circumference of the assembly plate body, the plurality of first inclined plates are arranged in one-to-one correspondence with the plurality of second inclined plates, the lower support further comprises a shock absorption connecting piece connected between the first inclined plate and the second inclined plate, and the upper cover plate is provided with a clearance hole for the first inclined plate and the second inclined plate to extend upward.

[0013] In some embodiments, the unit assembly plate comprises a counterweight arranged between two adjacent second inclined plates.

[0014] In some embodiments, the upper cover plate comprises a cover plate body and a plurality of side edge enclosing plates arranged equidistantly in sequence around the circumference of the cover plate body, and the shock absorption structure is arranged at least on the inner side of the cover plate body and the inner side of the plurality of side edge enclosing plates.

[0015] In some embodiments, the shock absorption structure is a shock absorption sponge.

[0016] The second aspect of the present application provides an inertial measurement device, which comprises an inertial measurement unit and the shock absorption assembly for the inertial measurement device described above, and the inertial measurement unit is arranged on the unit assembly site.

[0017] The third aspect of the present application provides a UAV, which comprises the inertial measurement device described above.

[0018] By the above technical solution, when the inertial measurement unit is installed by using the shock absorption assembly of the present application, the inertial measurement unit can be placed in the unit assembly site of the shock absorption cavity, and the shock absorption structure abuts against the inertial measurement unit. When the vibration of the device is transmitted to the inertial measurement unit, the shock absorption structure can absorb the vibration, thereby effectively reducing the adverse effects of the vibration on the inertial measurement unit and improving the detection accuracy of the inertial measurement unit. In addition, by adjusting the spacing between the upper cover plate and the lower support through the spacing adjustment structure, the spatial capacity of the shock absorption cavity can be changed, thereby facilitating the replacement of appropriate shock absorption structures, such as replacing shock absorption structures with different thicknesses or densities, to meet the shock absorption requirements of the inertial measurement unit assembled in different types of moving carriers.

[0019] Other features and advantages of the present embodiments will be made apparent by the following detailed description of the embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are included to provide a further understanding of the present embodiments and are incorporated in and constitute a part of this specification, illustrate embodiments of the present embodiments and serve to explain the present embodiments, but do not limit the present embodiments. Other embodiments can be derived from the structure shown in the drawings, without paying creative labor, which will be apparent to those skilled in the art. In the drawings:

[0021] Figure 1 is a front view of an inertial measurement device in the present embodiments;

[0022] Figure 2 is a top view of the inertial measurement device of Figure 1

[0023] Figure 3 is a schematic view of the bottom of the inertial measurement device of Figure 1

[0024] BRIEF DESCRIPTION OF DRAWINGS

[0025] 1 lower support 2 upper cover plate

[0026] 3 spacing adjustment structure 4 inertial measurement unit

[0027] 101 bottom plate 102 unit assembly plate

[0028] 103 shock-absorbing connecting piece 201 avoidance hole

[0029] 202 cover plate body 203 side fence

[0030] 301 support column 1011 second connecting part

[0031] 1012 bottom plate body 1013 first inclined plate

[0032] 1021 assembly plate body 1022 second inclined plate DETAILED DESCRIPTION

[0033] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0034] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0035] As Figures 1 to 3 ​​As shown, the first exemplary embodiment of the present application provides a damping assembly for an inertial measurement device, which includes a lower support 1, an upper cover plate 2, a damping structure, and a spacing adjustment structure 3. The top surface of the lower support 1 is provided with a unit assembly position (not shown in the drawings) for placing an inertial measurement unit 4. The upper cover plate 2 covers the lower support 1 to define a damping cavity. The damping structure (not shown in the drawings) is arranged in the damping cavity to abut the inertial measurement unit 4 placed on the unit assembly position. The spacing adjustment structure 3 is used to adjust the spacing between the upper cover plate 2 and the lower support 1.

[0036] In the damping assembly of the present application, a damping cavity is specially provided for accommodating the damping structure, so that the inertial measurement unit 4 placed on the unit assembly position can be contacted by the damping structure. As the name implies, the damping structure can play a role of buffering and damping for the contacted object. For example, the damping structure can be made of soft materials such as air cushion, sponge, and silica gel, which are not limited in the present application. Therefore, the inertial measurement unit 4 contacted with the damping structure can at least avoid being impacted by high-frequency vibration in the up-down direction, thereby being effectively protected and ensuring the accuracy of data collected by the inertial measurement unit 4.

[0037] In addition, considering that different transfer vehicles have different damping requirements for the inertial measurement unit 4, the damping assembly of the present application is also provided with the spacing adjustment structure 3. The spacing adjustment structure 3 adjusts the capacity of the damping cavity by adjusting the spacing between the upper cover plate 2 and the lower support 1, so as to adjust the tightness of the inertial measurement unit 4 pressed by the damping structure, or to facilitate the replacement of suitable damping structures, such as thicker or softer damping structures, to improve the damping effect of the damping structure on the inertial measurement unit 4, improve the flexibility of the damping assembly, and enable a single model of the damping assembly to be matched with more types of transfer vehicles, such as different models of unmanned aerial vehicles, thereby improving the expandability of the damping assembly.

[0038] In order to further improve the damping protection effect on the inertial measurement unit 4, as shown in Figure 1 and Figure 3 The upper cover plate 2 includes a cover plate body 202 and a plurality of side edge surrounding plates 203 arranged in sequence and spaced apart circumferentially along the cover plate body 202. In other words, the damping cavity can be enclosed by the cover plate body 202, the plurality of side edge surrounding plates 203, and the lower support 1. The damping structure is arranged at least on the inner side of the cover plate body 202 and the inner side of the plurality of side edge surrounding plates 203, so that the cover plate body 202 and the plurality of side edge surrounding plates 203 can form a wrapping state for the damping structure, and the damping structure can wrap the inertial measurement unit 4 installed on the unit assembly position. Therefore, the damping structure can simultaneously absorb high-frequency vibration of the inertial measurement unit 4 in the horizontal direction and the vertical direction, realize omnidirectional damping, and enable the inertial measurement unit 4 to obtain more accurate detection data.

[0039] In an optional or preferred embodiment, as shown inFigure 1 As shown, the lower support 1 comprises a bottom plate 101 and a unit assembly plate 102, the upper cover plate 2, the unit assembly plate 102 and the bottom plate 101 are arranged in sequence from top to bottom, the unit assembly position can be formed on the top surface of the unit assembly plate 102, the upper cover plate 2 is provided with a first connecting part (such as the intersection position of the spacing adjustment structure 3 and the upper cover plate 2 shown in the figure), the bottom plate 101 is provided with a second connecting part 1011 which is arranged in position with the first connecting part, and the spacing adjustment structure 3 is connected with the first connecting part and the second connecting part 1011 respectively. In this embodiment, the first connecting part and the second connecting part 1011 are arranged at the edge of the cover plate body 202 and the edge of the bottom plate 101 respectively, and the area of the unit assembly plate 102 is smaller than that of the bottom plate 101, so that the edge of the unit assembly plate 102 can avoid the spacing adjustment structure 3 which connects the first connecting part and the second connecting part 1011. The spacing adjustment structure 3 can adjust the spacing between the upper cover plate 2 and the bottom plate 101 on the one hand, and can also support the upper cover plate 2 on the other hand, and the overall structure of the shock absorbing assembly of the application is more stable and is not easy to deform, and the shock absorbing effect is also improved.

[0040] In other embodiments, the unit assembly plate 102 can also be provided with an assembly plate avoiding hole, so that the spacing adjustment structure 3 can pass through the assembly plate avoiding hole to be arranged through the unit assembly plate 102, which is not limited in the application.

[0041] Further, the bottom plate 101 comprises a bottom plate body 1012 and a plurality of first inclined plates 1013 arranged in sequence and at equal intervals around the circumference of the bottom plate body 1012, and the unit assembly plate 102 comprises an assembly plate body 1021 and a plurality of second inclined plates 1022 arranged in sequence and at equal intervals around the circumference of the assembly plate body 1021, and the plurality of first inclined plates 1013 are arranged in one-to-one position with the plurality of second inclined plates 1022. Wherein, the application does not limit the specific shape of the bottom plate 101 and the unit assembly plate 102, as an example, as shown in Figure 2 and Figure 3 As shown, the bottom plate body 1012 and the assembly plate body 1021 can be square plates, which can better ensure that the quality distribution of the lower support 1 is more stable, and the first inclined plate 1013 and the second inclined plate 1022 are provided with four respectively and distributed at the four corners of the bottom plate body 1012 and the assembly plate body 1021.

[0042] In addition, the lower support 1 further comprises a damping connecting piece 103, such as a spring, a gas cylinder or a damping ball as shown in the drawings, connected between the first inclined plate 1013 and the second inclined plate 1022. Preferably, the inclination angles of the first inclined plate 1013 and the second inclined plate 1022 are 45°, so that the damping connecting piece 103 can better absorb the vibration transmitted from the bottom plate 101 upward, thereby maintaining the stability of the assembly plate body 1021 and reducing the vibration transmitted to the inertial measurement unit 4.

[0043] In the case where the first inclined plate 1013 and the second inclined plate 1022 are both upwardly inclined, in order to ensure the compactness of the damping assembly of the present application, the upper cover plate 2 is provided with a relief hole 201 for the upward extension of the first inclined plate 1013 and the second inclined plate 1022, so that the distance between the bottom plate 101 and the unit assembly plate 102 can be set smaller, which helps to reduce the overall volume of the damping assembly, thereby facilitating the assembly on a small-size moving vehicle such as a drone.

[0044] It should be noted that in the case where the damping connecting piece 103 is provided between the first inclined plate 1013 and the second inclined plate 1022, the distance between the upper cover plate 2 and the bottom plate 101 is adjusted by the distance adjusting structure 3, and similarly, the damping connecting piece 103 can be replaced, thereby improving the flexibility of the damping assembly.

[0045] In the embodiment shown in the drawings, the distance adjusting structure 3 comprises a telescopic support column 301, and the two ends of the support column 301 are respectively connected to the first connecting part and the second connecting part 1011 by screws. In this way, by adjusting the telescopic length of the support column 301, the distance between the upper cover plate 2 and the bottom plate 101 can be adjusted, thereby adjusting the volume of the damping accommodating cavity located therebetween.

[0046] In other alternative embodiments, the distance adjusting structure 3 can comprise a threaded column and a threaded hole, wherein the threaded hole is provided in one of the first connecting part and the second connecting part 1011, and the threaded column is provided in the other one of the first connecting part and the second connecting part 1011, and the threaded column is arranged through the threaded hole to form a threaded fit. In this way, by rotating the threaded column in the forward or reverse direction, the threaded column drives the upper cover plate 2 or the bottom plate 101 to move in the direction away from or close to each other, thereby adjusting the volume of the damping accommodating cavity located therebetween.

[0047] Of course, the present application can also be connected by a connecting column or other connecting structure without telescopic function to fix the upper cover plate 2 and the bottom plate 101.

[0048] In an alternative or preferred embodiment, the unit assembly plate 102 comprises a counterweight (not shown in the drawings) arranged between two adjacent second inclined plates 1022, preferably symmetrically arranged about the central axis of the assembly plate body 1021, so as to facilitate the uniformity of the mass distribution of the unit assembly plate 102 and improve the assembly stability of the inertial measurement unit 4.

[0049] Preferably, the damping structure is a damping sponge.

[0050] The second exemplary embodiment of the present application provides an inertial measurement device comprising the inertial measurement unit 4 and the damping assembly for the inertial measurement device described above, wherein the inertial measurement unit 4 is arranged on the unit assembly position of the damping assembly. Obviously, the inertial measurement device of the present exemplary embodiment has all the technical effects brought by the damping assembly described above, and thus will not be described here.

[0051] The third exemplary embodiment of the present application provides a UAV comprising the inertial measurement device described above, wherein the inertial measurement device can be installed on the flight control board of the UAV for monitoring the acceleration and attitude angle of the UAV. Obviously, the UAV of the present exemplary embodiment also has all the technical effects brought by the damping assembly described above, and thus will not be described here.

[0052] Of course, the inertial measurement device of the present application can also be installed on a mobile carrier such as a robot or a motor vehicle, which is not limited in the present application.

[0053] It should be noted that in the present application, the positional words such as "upper", "lower", "top", "bottom" are used to describe the positional relationship between the components in the use state of the damping assembly, unless otherwise stated.

[0054] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0055] In this application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection or communication with each other; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0056] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0057] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A shock absorbing assembly for an inertial measurement device, characterized by, The utility model relates to a shock-absorbing structure for an inertial measurement unit (4), comprising: a lower support (1) having a top surface provided with a unit mounting position for mounting the inertial measurement unit (4); an upper cover plate (2) covering the lower support (1) to define a shock-absorbing cavity; a shock-absorbing structure arranged in the shock-absorbing cavity for abutting against the inertial measurement unit (4); and a spacing adjustment structure (3) for adjusting the spacing between the upper cover plate (2) and the lower support (1). The lower support (1) comprises a bottom plate (101) and a unit mounting plate (102), the upper cover plate (2), the unit mounting plate (102) and the bottom plate (101) are arranged in sequence from top to bottom, the unit mounting plate (102) is formed with the unit mounting position, the upper cover plate (2) is provided with a first connecting part, the bottom plate (101) is provided with a second connecting part (1011) arranged in position with the first connecting part, and the spacing adjustment structure (3) is connected with the first connecting part and the second connecting part (1011) respectively.

2. The shock absorbing assembly for an inertial measurement device of claim 1, wherein, The spacing adjustment structure (3) comprises a telescopic adjusting support column (301), and two ends of the support column (301) are connected with the first connecting part and the second connecting part (1011) respectively.

3. The shock assembly for an inertial measurement device of claim 2, wherein, The spacing adjustment structure (3) comprises a threaded column and a threaded hole, the threaded hole is arranged in one of the first connecting part and the second connecting part (1011), the threaded column is arranged in the other one of the first connecting part and the second connecting part (1011) and penetrates the threaded hole to form a threaded fit.

4. The shock absorbing assembly for an inertial measurement device of claim 2, wherein, The bottom plate (101) comprises a bottom plate body (1012) and a plurality of first inclined plates (1013) arranged in sequence and at equal intervals in the circumferential direction of the bottom plate body (1012), the unit mounting plate (102) comprises a mounting plate body (1021) and a plurality of second inclined plates (1022) arranged in sequence and at equal intervals in the circumferential direction of the mounting plate body (1021), the plurality of first inclined plates (1013) are arranged in one-to-one position with the plurality of second inclined plates (1022) respectively, and the lower support (1) further comprises a shock-absorbing connecting piece (103) connected between the first inclined plates (1013) and the second inclined plates (1022), and the upper cover plate (2) is provided with an avoiding hole (201) for upward extension of the first inclined plates (1013) and the second inclined plates (1022).

5. The shock assembly for an inertial measurement device of claim 2, wherein, The unit mounting plate (102) comprises a counterweight arranged between two adjacent second inclined plates (1022).

6. The shock assembly for an inertial measurement device of claim 5, wherein, The upper cover plate (2) comprises a cover plate body (202) and a plurality of side edge surrounding plates (203) arranged in sequence and at equal intervals in the circumferential direction of the cover plate body (202), and the shock-absorbing structure is arranged at least on the inner side of the cover plate body (202) and the inner sides of the plurality of side edge surrounding plates (203).

7. The shock assembly for an inertial measurement device of claim 1, wherein, The shock-absorbing structure is a shock-absorbing sponge.

8. The shock assembly for an inertial measurement device of any one of claims 1 to 7, wherein, ​ 9. An inertial measurement device, characterized by The inertial measurement device comprises an inertial measurement unit (4) arranged on the unit mounting site and a shock absorbing assembly for an inertial measurement device according to any one of claims 1 to 8.

10. A drone, characterized in that, The unmanned aerial vehicle comprises an inertial measurement device according to claim 9.

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