Micromechanical gyroscope

Abstract

The utility model provides a micromechanical gyroscope which comprises a gyroscope body, the gyroscope body comprises an upper shell, a lower shell, a stabilizing and reinforcing element and a vibration element, the upper shell and the lower shell are fixed into a whole in a bonding mode, pins are arranged on the two sides of the bottom of the lower shell, and the stabilizing and reinforcing element is connected with the vibration element. The stabilizing and reinforcing element is arranged on the surface of the upper shell and the surface of the lower shell in a sleeving mode, a coupling frame is arranged on one side of the vibration element, and the stabilizing and reinforcing element is installed outside the micromechanical gyroscope. When the micromechanical gyroscope sensor is fixed on a circuit board, downward pressure is simultaneously applied to the top of the micromechanical gyroscope sensor by means of the stable reinforcing element, so that the probability that the stability of the whole micromechanical gyroscope sensor is reduced due to loosening of subsequent pins is reduced, and a rolling effect is provided by a ceramic ball at the bottom; the abrasion problem of core elements in the micromechanical gyroscope sensor is relieved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic components, in particular to a micro-mechanical gyroscope. Background Art

[0002] Micromechanical gyroscopes are gyroscopes made based on micromechanical technology. They do not need to integrate rotating parts inside, but detect angular velocity through a vibrating micromechanical component made of silicon. According to the prior art, such as a micromechanical gyroscope described in Chinese patent document CN201610916234.X, the disclosed technical solution can ensure that the momentum and angular momentum of the entire system are always 0 by adopting a centrally symmetrical structural arrangement. Also, due to its structural symmetrical movement, it is immune to vibration / shock drift, linear vibration and angular vibration. Vacuum packaging technology is used to improve the yield rate and reduce costs.

[0003] According to the disclosed technical solution, the micromechanical gyroscope sensor in the prior art fixes the pins on the circuit board by soldering to achieve circuit connectivity. In order to ensure high sensitivity of subsequent sensing, the micromechanical gyroscope needs to be kept parallel to the mounting surface of the circuit board. However, in the prior solution, severe collisions during long-term use after installation may cause the pin welding position to loosen, thereby causing the mounting surface to loosen, and the subsequent sensing detection accuracy will also decrease. On the other hand, the bottom of the vibration element inside the micromechanical gyroscope directly generates high-speed friction with the substrate during high-frequency vibration, and this problem will reduce its service life. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a micromechanical gyroscope to solve the problems raised in the above-mentioned background technology. The utility model adds a stable structure to prevent tilting, improves wear resistance, and prolongs its service life.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a micromechanical gyroscope, including a gyroscope body, the gyroscope body including an upper shell, a lower shell, a stabilizing reinforcement element and a vibration element, the upper shell and the lower shell are fixed as a whole by bonding, pins are arranged on both sides of the bottom of the lower shell, the stabilizing reinforcement element is sleeved on the surfaces of the upper shell and the lower shell, the vibration element is fixedly installed inside the gyroscope body, and a coupling frame is arranged on one side of the vibration element.

[0006] Furthermore, a substrate is installed inside the upper shell and the lower shell, the vibration element is installed on the surface of the substrate, and a driving electrode is arranged on the side of the vibration element, and the vibration element includes two mass blocks.

[0007] Furthermore, docking balls are embedded in the bottom of the mass block, three docking balls are arranged as a group, and a supporting ball is placed in the middle of each group of docking balls. A slide groove is opened on the surface of the substrate, and the supporting ball is embedded in the inside of the slide groove. A gap is arranged between the bottom of the mass block and the surface of the substrate.

[0008] Furthermore, a vibration gap is provided on the inner side of the coupling frame, a groove is provided on the inner wall of the coupling frame, and an induction electrode is installed inside the vibration gap.

[0009] Furthermore, an arc-shaped protrusion is provided on the side of the sensing electrode, and the arc-shaped protrusion is aligned with the groove, and the sensing electrode is fixed to the surface of the substrate as a whole.

[0010] Furthermore, the stabilizing and reinforcing element includes a pressure rod and a fixing rod, the fixing rod is arranged at both ends of the pressure rod, and a thermally conductive silicone sheet is attached to the bottom of the pressure rod.

[0011] Furthermore, the bottom of the thermally conductive silicone sheet is in contact with the surface of the upper shell, the interior of the fixing rod is a hollow structure, and a plug-in column is inserted into the interior of the fixing rod, and a support pad is installed at the bottom of the plug-in column.

[0012] Furthermore, a bottom welding sheet is provided at the bottom of the support pad, a welding tin sheet is connected to the top of the plug-in column, and the surface of the plug-in column is in contact with the inner wall of the fixing rod.

[0013] Beneficial effects of the utility model:

[0014] The micromechanical gyroscope is provided with a stabilizing reinforcement element installed on the outside. When the micromechanical gyroscope sensor is fixed on a circuit board, downward pressure is applied to the top of the micromechanical gyroscope sensor with the help of the stabilizing reinforcement element, and multiple welding fixing points are provided, thereby reducing the probability of subsequent pin loosening and causing the stability of the entire micromechanical gyroscope sensor to decrease.

[0015] The micromechanical gyroscope achieves a supporting effect through two sets of balls at the bottom of the internal vibration element. Therefore, when the vibration element is controlled to vibrate at high frequency with the help of driving electrodes and sensing electrodes, a rolling effect can be provided by the ceramic balls at the bottom. The rolling support replaces the sliding friction, thereby reducing the wear problem of the core components inside the micromechanical gyroscope sensor and extending its service life.

[0016] In the internal coupling structure of the micromechanical gyroscope, an arc-shaped protrusion is provided on the side of the induction motor, which is aligned with the groove on the inner wall of the coupling frame. Therefore, when vibrating, the sensing electrode part can provide a larger contact area, so that the vibration element can stop in a shorter time after colliding with the sensing electrode, while also reducing the probability of deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the appearance of a micromechanical gyroscope of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the stabilizing and reinforcing component part of the utility model;

[0019] Figure 3 This is a top view of the interior of a micromechanical gyroscope of the utility model;

[0020] Figure 4 This is a bottom structural diagram of the vibration element of the utility model;

[0021] In the figure: 1. upper shell; 2. lower shell; 3. pins; 4. stabilizing reinforcement element; 5. pressure rod; 6. thermal conductive silicone sheet; 7. fixing rod; 8. support pad; 9. bottom welding sheet; 10. plug-in column; 11. welding tin sheet; 12. substrate; 13. driving electrode; 14. vibration element; 15. mass block; 16. coupling frame; 17. docking ball; 18. supporting ball; 19. vibration gap; 20. groove; 21. sensing electrode; 22. arc-shaped protrusion. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] See also Figures 1 to 4 The utility model provides a technical solution: a micromechanical gyroscope, comprising a gyroscope body, the gyroscope body comprising an upper shell 1, a lower shell 2, a stabilizing reinforcement element 4 and a vibration element 14, the upper shell 1 and the lower shell 2 are fixed as a whole by bonding, pins 3 are arranged on both sides of the bottom of the lower shell 2, the stabilizing reinforcement element 4 is sleeved on the surfaces of the upper shell 1 and the lower shell 2, the vibration element 14 is fixedly installed inside the gyroscope body, and a coupling frame 16 is arranged on one side of the vibration element 14, the micromechanical gyroscope is welded and fixed to a circuit board through the pins 3 at the bottom, and during installation, the entire micromechanical gyroscope sensor is inserted into the interior of the stabilizing reinforcement element 4, and after being synchronously fixed to the circuit board through the stabilizing reinforcement element 4, the auxiliary fixation and heat dissipation effect of the micromechanical gyroscope sensor are achieved.

[0024] In this embodiment, a substrate 12 is installed inside the upper shell 1 and the lower shell 2, the vibration element 14 is installed on the surface of the substrate 12, and a driving electrode 13 is arranged on the side of the vibration element 14. The vibration element 14 includes two mass blocks 15, and a docking ball 17 is embedded at the bottom of the mass block 15. Three docking balls 17 are arranged as a group, and a supporting ball 18 is placed in the middle of each group of docking balls 17. A slide groove is opened on the surface of the substrate 12, and the supporting ball 18 is embedded in the inside of the slide groove. A gap is arranged between the bottom of the mass block 15 and the surface of the substrate 12. The support effect is achieved by two groups of balls at the bottom of the internal vibration element 14. Therefore, when the vibration element 14 is controlled to vibrate at high frequency by means of the driving electrode 13 and the sensing electrode 21, a rolling effect can be provided by the ceramic balls at the bottom, and the sliding friction is replaced by the rolling support, thereby reducing the wear problem of the core components inside the micromechanical gyroscope sensor and extending the service life.

[0025] Specifically, after the current is transmitted to the inside of the driving electrode 13, the mass block 15 can be vibrated, and by applying voltage and changing the voltage alternately, the mass block 15 can be made to oscillate back and forth on the substrate 12. When the mass block 15 rotates, Coriolis acceleration is generated, and the angular velocity can be determined by measuring the Coriolis acceleration. In this process, the movement of the vibration element 14 is always achieved through the two sets of ball supports at the bottom, so there is no direct contact between the bottom of the mass block 15 and the substrate 12, thereby avoiding the problem of rapid wear between the mass block 15 and the substrate 12.

[0026] In this embodiment, a vibration gap 19 is provided on the inner side of the coupling frame 16, a groove 20 is provided on the inner wall of the coupling frame 16, an induction electrode 21 is installed inside the vibration gap 19, an arc-shaped protrusion 22 is provided on the side of the induction electrode 21, and the arc-shaped protrusion 22 is aligned with the groove 20, and the induction electrode 21 is fixed as a whole with the surface of the substrate 12. In the internal coupling structure, an arc-shaped protrusion 22 is provided on the side of the induction motor, which is aligned with the groove 20 on the inner wall of the coupling frame 16, so that when vibrating, the induction electrode 21 part can provide a larger contact area, so that the vibration element 14 can stop in a shorter time after colliding with the induction electrode 21, and the probability of deformation is also reduced.

[0027] Specifically, the sensing electrode 21 is limited inside the coupling frame 16 to control the oscillation range of the entire vibration element 14. Therefore, when the mass block 15 moves in one direction, the groove 20 on the inner side of the coupling frame 16 will eventually be pressed against the surface of the arc-shaped protrusion 22 on one side of the sensing electrode 21. By matching the groove 20 with the edge of the sensing electrode 21, the limiting and blocking effect of the entire vibration element 14 can be achieved.

[0028] In this embodiment, the stabilizing reinforcement element 4 includes a pressure rod 5 and a fixing rod 7. The fixing rod 7 is arranged at both ends of the pressure rod 5. A heat-conducting silicone sheet 6 is attached to the bottom of the pressure rod 5. The bottom of the heat-conducting silicone sheet 6 fits with the surface of the upper shell 1. The interior of the fixing rod 7 is a hollow structure, and a plug-in column 10 is inserted into the interior of the fixing rod 7. A support pad 8 is installed at the bottom of the plug-in column 10. A bottom welding sheet 9 is arranged at the bottom of the support pad 8. A welding tin sheet 11 is connected to the top of the plug-in column 10. The surface of the plug-in column 10 fits with the inner wall of the fixing rod 7. A stabilizing reinforcement element 4 is installed on the outside. When the micromechanical gyroscope sensor is fixed on the circuit board, downward pressure is applied to the top of the micromechanical gyroscope sensor with the help of the stabilizing reinforcement element 4, and multiple welding fixing points are provided, which reduces the probability that the subsequent pin 3 becomes loose and causes the stability of the entire micromechanical gyroscope sensor to decrease.

[0029] Specifically, during installation, the bottom of the entire micromechanical gyroscope sensor is supported by the support pad 8 at the bottom, and then the bottom welding sheet 9 can be fixed on the circuit board, and the thermal conductive silicone sheet 6 at the top is attached to the surface of the upper shell 1, and finally the fixing rod 7 is sleeved on the plug-in column 10 and the welding tin sheet 11. The internal welding tin sheet 11 can be melted by heating the fixing rod 7, and the fixing rod 7 and the plug-in column 10 can be fixed as a whole. During the whole process, downward pressure is always applied to the micromechanical gyroscope sensor, thereby ensuring that the entire micromechanical gyroscope sensor always maintains a stable downward fixed state after the fixation is completed.

[0030] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A micromechanical gyroscope, comprising a gyroscope body, characterized in that: The gyroscope body comprises an upper shell (1), a lower shell (2), a stabilizing reinforcement element (4) and a vibration element (14); the upper shell (1) and the lower shell (2) are fixed as a whole by bonding; pins (3) are provided on both sides of the bottom of the lower shell (2); the stabilizing reinforcement element (4) is sleeved on the surfaces of the upper shell (1) and the lower shell (2); the vibration element (14) is fixedly mounted inside the gyroscope body; and a coupling frame (16) is provided on one side of the vibration element (14).

2. A micromechanical gyroscope according to claim 1, characterized in that: A substrate (12) is installed inside the upper shell (1) and the lower shell (2), the vibration element (14) is installed on the surface of the substrate (12), and a driving electrode (13) is arranged on the side of the vibration element (14), and the vibration element (14) includes two mass blocks (15).

3. A micromechanical gyroscope according to claim 2, characterized in that: A docking ball (17) is embedded in the bottom of the mass block (15), three docking balls (17) are arranged as a group, and a supporting ball (18) is placed in the middle of each group of docking balls (17), a slide groove is provided on the surface of the base plate (12), the supporting ball (18) is embedded in the inside of the slide groove, and a gap is provided between the bottom of the mass block (15) and the surface of the base plate (12).

4. A micromechanical gyroscope according to claim 2, characterized in that: A vibration gap (19) is provided on the inner side of the coupling frame (16), a groove (20) is provided on the inner wall of the coupling frame (16), and an induction electrode (21) is installed inside the vibration gap (19).

5. A micromechanical gyroscope according to claim 4, characterized in that: An arc-shaped protrusion (22) is provided on the side of the sensing electrode (21), and the arc-shaped protrusion (22) and the groove (20) are aligned with each other, and the sensing electrode (21) and the surface of the substrate (12) are fixed as a whole.

6. A micromechanical gyroscope according to claim 1, characterized in that: The stabilizing reinforcement element (4) comprises a pressure rod (5) and a fixing rod (7), wherein the fixing rod (7) is arranged at both ends of the pressure rod (5), and a heat-conducting silicone sheet (6) is attached to the bottom of the pressure rod (5).

7. A micromechanical gyroscope according to claim 6, characterized in that: The bottom of the thermally conductive silicone sheet (6) is in contact with the surface of the upper shell (1); the interior of the fixing rod (7) is a hollow structure; a plug-in column (10) is inserted into the interior of the fixing rod (7); and a support pad (8) is installed at the bottom of the plug-in column (10).

8. A micromechanical gyroscope according to claim 7, characterized in that: A bottom welding sheet (9) is provided at the bottom of the support pad (8), a welding tin sheet (11) is connected to the top of the plug-in column (10), and the surface of the plug-in column (10) is in contact with the inner wall of the fixing rod (7).

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