A vertical-horizontal dual-purpose single-axis gyroscope ceramic packaging structure

Abstract

The utility model discloses a vertical and horizontal dual-purpose single-shaft gyroscope ceramic packaging structure, including mutually cooperate casing and apron, the casing is equipped with the accommodation cavity to the apron one side, and the accommodation cavity is used for accommodating gyroscope, and the casing bottom is equipped with a plurality of bottom groove, and the bottom groove inside two sides are equipped with front patch and rear patch respectively, the casing is equipped with upper back patch and lower back patch respectively to the apron one side top and bottom, the packaging structure of the utility model can be installed vertically or horizontally, realizes directly welding three gyroscopes on single bottom plate, avoids the complex structure and technology of installing PCB on the shell after welding gyroscope to PCB first, makes the miniaturization of inertial measurement unit possible, and reduces the installation step, reduces the manufacturing difficulty, saves manufacturing cost, and moreover only needs to use the casing bottom surface and the casing relative to the apron one side side when installing, guarantees the perpendicularity of structure, when welding to the PCB board by surface mount technology, reduces the error of cross axis.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gyroscope technology, concretely is a vertical and horizontal dual-purpose single-axis gyroscope ceramic packaging structure. BACKGROUND

[0002] The gyroscope is a kind of instrument that can accurately determine the orientation of moving object, and the traditional inertial gyroscope mainly refers to fiber-optic gyroscope, and the fiber-optic gyroscope has high requirement on process structure, and the structure is complex, and its size is restricted in application aspect.A great development has been made in MEMS gyroscope since 1990s.The MEMS gyroscope has higher integration, smaller volume, and is also an important development direction of modern gyroscope.

[0003] Generally, high-precision MEMS gyroscope is single-axis gyroscope, when designing three-axis inertial measurement unit product, the gyroscope is first welded to three PCBs, then the PCBs of X-axis and Y-axis are vertically installed to product shell, and the PCB of Z-axis is horizontally installed to product shell, the product structure is relatively complex, leading to larger product size, difficult to miniaturization, and the perpendicularity of PCB installation and the release of installation stress are difficult to control, leading to larger cross-axis error of gyroscope, and reducing long-term reliability and precision. CONTENT OF THE UTILITY MODEL

[0004] To solve the defects of the prior art, the utility model provides a vertical and horizontal dual-purpose single-axis gyroscope ceramic packaging structure, which can be vertically or horizontally installed, and directly weld three gyroscopes on a single bottom plate.

[0005] To achieve the above technical purposes, the utility model adopts the following technical scheme: a vertical and horizontal dual-purpose single-axis gyroscope ceramic packaging structure, which comprises a shell and a cover plate matched with each other, the shell is provided with a containing cavity on the side facing the cover plate, the containing cavity is used for containing a gyroscope, the bottom of the shell is provided with a plurality of bottom grooves, the front patch and the rear patch are respectively arranged on the two sides in the bottom groove, the upper back patch is arranged on the top of the side of the shell relative to the cover plate, the lower back patch is arranged on the bottom of the side of the shell relative to the cover plate, the rear patch is connected with the lower back patch, and the front patch is connected with the upper back patch.

[0006] Preferably, the containing cavity is provided with a boss around, and the boss clamps the gyroscope.

[0007] Preferably, the boss is provided with a plurality of upper inner patches on the top of the side facing the cover plate, the upper inner patches are connected with the upper back patch, the boss is provided with a plurality of lower inner patches on the bottom of the side facing the cover plate, and the lower inner patches are connected with the lower back patch.

[0008] Preferably, one of the lower back patches is provided with an outer mark, and one of the lower inner patches is provided with an inner mark, and the lower back patch marked by the outer mark is connected with the lower inner patch marked by the inner mark.

[0009] Preferably, the bottom groove is provided with a partition block, and the partition block separates the front patch and the back patch.

[0010] Preferably, the top surface of the shell is provided with a plurality of top grooves.

[0011] Preferably, the bottom surface of the shell is vertically arranged relative to the side surface of the cover plate.

[0012] In summary, the utility model achieves the following technical effects:

[0013] 1. The vertical and horizontal dual-purpose single-axis gyroscope ceramic packaging structure can be vertically or horizontally installed, directly welded with three gyroscopes on a single bottom plate, avoids the complex structure and process of welding gyroscopes on a PCB and then installing the PCB on the shell, makes the miniaturization of the inertial measurement unit possible, reduces the installation steps, reduces the manufacturing difficulty, and saves the manufacturing cost.

[0014] 2. The vertical and horizontal dual-purpose single-axis gyroscope ceramic packaging structure only needs to use the bottom surface of the shell and the side surface of the shell relative to the cover plate during installation, ensures the perpendicularity of the structure, and reduces the error of the cross axis when welded on the PCB by the surface mount technology. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a front structure schematic view of the vertical and horizontal dual-purpose single-axis gyroscope ceramic packaging structure of the utility model;

[0016] Fig. 2 is a back structure schematic view of the vertical and horizontal dual-purpose single-axis gyroscope ceramic packaging structure of the utility model;

[0017] Fig. 3 is a structure schematic view of the shell of the vertical and horizontal dual-purpose single-axis gyroscope ceramic packaging structure of the utility model;

[0018] The description of the drawings of the specification is as follows: 1, shell; 2, cover plate; 3, bottom groove; 4, top groove; 5, partition block; 6, front patch; 7, back patch; 8, lower back patch; 9, upper back patch; 10, outer mark; 11, lower inner patch; 12, inner mark; 13, upper inner patch; 14, boss. DETAILED DESCRIPTION

[0019] The utility model will be further described in detail in combination with the drawings.

[0020] The specific embodiments are merely illustrative of the present application, and are not intended to limit the present application, and those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, as long as the modifications are within the scope of the claims of the present application.

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0022] In addition, 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 technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0023] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In the present application, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0025] Embodiment one:

[0026] As Figs. 1-3 The vertical and horizontal dual-purpose single-axis gyroscope ceramic packaging structure comprises a matched shell 1 and a cover plate 2, the shell 1 is provided with a containing cavity on the side facing the cover plate 2, the containing cavity is provided with a boss 14 around, the boss 14 clamps the gyroscope, the bottom of the shell 1 is provided with five bottom grooves 3, the two sides in the bottom grooves 3 are respectively provided with front patches 6 and rear patches 7, the top of the side of the shell 1 relative to the cover plate 2 is provided with an upper back patch 9, the bottom of the side of the shell 1 relative to the cover plate 2 is provided with a lower back patch 8, the rear patch 7 is connected with the lower back patch 8, and the front patch 6 is connected with the upper back patch 9; the bottom surface of the shell 1 is vertically arranged with the side of the shell 1 relative to the cover plate 2.

[0027] The gyroscope is fixed in the containing cavity through silver glue, the shell 1 is made of ceramic material, the shell 1 and the cover plate 2 are fixed together through parallel sealing welding, the sealing performance between the shell 1 and the cover plate 2 is improved, the gyroscope is connected with the lower inner patch 11 and the upper inner patch 13 in a wire bonding mode, gold wire passes through the capillary of the hollow clamp, then is subjected to arc discharge to make the protruding part melt and form a spherical shape under the action of surface tension, then the ball is pressed and welded to the electrode of the chip through the clamp, and after pressing, the ball serves as the first welding point, then the bent gold wire is extracted from the first welding point and is pressed and welded to the corresponding position to form the second welding point, which is a flat welding (wedge-shaped) welding point, and then another new ball is formed and used as the first ball welding point of the next one.

[0028] The vertical and horizontal dual-purpose single-axis gyroscope ceramic packaging structure can be vertically or horizontally installed, three gyroscopes can be directly welded on a single bottom plate, the complex structure and process that the gyroscopes are first welded on a PCB and then the PCB is installed on the shell are avoided, miniaturization of the inertial measurement unit is possible, the installation steps are reduced, the manufacturing difficulty is reduced, and the manufacturing cost is saved; only the bottom surface of the shell 1 and the side of the shell 1 relative to the cover plate 2 are used during installation, the perpendicularity of the structure is ensured, the error of the cross axis is reduced when being welded on the PCB by the surface mounting technology, the ceramic packaging has obvious advantages for the MEMS gyroscope, the high and low temperature characteristics of the gyroscope can be improved, the stress influence of the PCB deformation on the gyroscope is reduced, and the long-term performance stability and consistency of the gyroscope are ensured.

[0029] The boss 14 is provided with five upper inner patches 13 on the top of the side facing the cover plate 2, the upper inner patches 13 are connected with the upper back patch 9, and the boss 14 is provided with five lower inner patches 11 on the bottom of the side facing the cover plate 2, the lower inner patches 11 are connected with the lower back patch 8.

[0030] The rightmost lower back patch 8 of the five lower back patches 8 is provided with an outer mark 10, and the rightmost lower inner patch 11 of the five lower inner patches 11 is provided with an inner mark 12, the lower back patch 8 marked by the outer mark 10 is connected with the lower inner patch 11 marked by the inner mark 12; the rest of the lower back patches 8, the lower inner patches 11 and the back patches 7 are one-to-one corresponding connection, and the upper back patches 9, the upper inner patches 13 and the front patches 6 are one-to-one corresponding connection.

[0031] The middle part of the bottom groove 3 is provided with a partition block 5, and the partition block 5 separates the front patch 6 from the back patch 7.

[0032] The top part of the shell 1 is provided with five top grooves 4.

[0033] When the X-axis and Y-axis are installed, the shell 1 is vertically installed, that is, the bottom groove 3 of the shell 1 is positioned towards the PCB, and the five front patches 6 and the five back patches 7 are connected with the PCB, and it is noted that the back patch 7 connected with the lower back patch 8 provided with the outer mark 10 is used as the leading end, when the Z-axis is installed, the shell 1 is horizontally installed, that is, the back of the shell 1 is towards the PCB, and the cover plate 2 is upwards, and the five upper back patches 9 and the five lower back patches 8 are connected with the PCB, and it is noted that the lower back patch 8 provided with the outer mark 10 is used as the leading end, and the leading end is provided, so that the installation precision is improved.

[0034] The above is only a preferred embodiment of the present application, and does not limit the present application in any form, and any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiment are within the scope of the technical scheme of the present application.

Claims

1. A ceramic packaging structure for a vertical / horizontal dual-purpose single-axis gyroscope, characterized in that, The application relates to a gyroscope, which comprises a matched shell and a cover plate, the shell is provided with a containing cavity for containing a gyroscope on one side of the cover plate, the bottom of the shell is provided with a plurality of bottom grooves, the two sides of the bottom grooves are respectively provided with front and rear patches, the top of the shell on the side of the cover plate is provided with an upper back patch, the bottom of the shell on the side of the cover plate is provided with a lower back patch, the rear patch is connected with the lower back patch, and the front patch is connected with the upper back patch.

2. The dual upright and horizontal single-axis gyroscope ceramic packaging structure according to claim 1, wherein, The containing cavity is provided with a boss around the containing cavity, and the boss clamps the gyroscope.

3. The dual upright-horizontal single-axis gyroscope ceramic packaging structure according to claim 2, wherein, The boss is provided with a plurality of upper inner patches on the top of the side of the cover plate, the upper inner patches are connected with the upper back patch, the boss is provided with a plurality of lower inner patches on the bottom of the side of the cover plate, and the lower inner patches are connected with the lower back patch.

4. The dual upright and horizontal single-axis gyroscope ceramic packaging structure according to claim 3, characterized in that, One of the plurality of lower back patches is provided with an outer mark, one of the plurality of lower inner patches is provided with an inner mark, and the lower back patch marked by the outer mark is connected with the lower inner patch marked by the inner mark.

5. The dual upright and recumbent single-axis gyroscope ceramic packaging structure according to claim 1, characterized in that, The middle of the bottom groove is provided with a partition block, and the partition block separates the front patch from the rear patch.

6. The dual upright and recumbent single-axis gyroscope ceramic packaging structure according to claim 1, characterized in that, The top of the shell is provided with a plurality of top grooves.

7. The dual upright-horizontal single-axis gyroscope ceramic packaging structure according to claim 1, wherein, The bottom surface of the shell is vertically arranged with the side surface of the shell on the side of the cover plate.

Images