Anti-shock pendulum structure of quartz flexible accelerometer

Abstract

This utility model discloses an impact-resistant pendulum structure for a quartz flexible accelerometer, comprising: an outer ring and a pendulum tongue; a pendulum head component disposed between the outer ring and the pendulum tongue for absorbing the energy generated when the pendulum tongue vibrates; a slot disposed on the inner wall of the outer ring; and a buffer component disposed on the inner wall of the slot, serving as a limit and buffer. This utility model, by providing telescopic grooves on both sides of the pendulum head beam, with each telescopic groove containing a set of elastic clips, enhances the bending resistance of the pendulum head beam through this series of actions. With the cooperation of a tension plate, multiple springs are used to diagonally pull the pendulum head beam between the tension plate and the outer ring, thereby improving its tensile strength and significantly extending its service life.

Description

Technical Field

[0001] This utility model relates to the field of accelerometer structure technology, and in particular to an impact-resistant pendulum structure for a quartz flexible accelerometer. Background Technology

[0002] Quartz flexural accelerometers are high-precision inertial sensors widely used in launch vehicles, missiles, satellites, vehicle systems, ships, drilling, and other fields. The quartz pendulum is the core sensing element of the quartz flexural accelerometer. The quartz pendulum has a single-axis output, with the flexible beam as the rotation axis and the output axis perpendicular to the surface of the flexible beam. Its material is high-purity quartz glass, which has the characteristics of low thermal expansion coefficient, stable chemical properties, and high specific stiffness coefficient.

[0003] Currently, most quartz flexible accelerometers with shock-resistant pendulum structures are prone to bending and fracture due to the violent up-and-down vibration of the pendulum tongue during operation. This is because the pendulum head beam is relatively thin and the pendulum tongue is a cantilever structure. The prolonged vibration and bending of the pendulum head beam and the connection between the pendulum head beam and the pendulum tongue can easily lead to twisting and breakage. Utility Model Content

[0004] The purpose of this invention is to provide an impact-resistant pendulum structure for a quartz flexible accelerometer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A shock-resistant pendulum structure for a quartz flexible accelerometer includes: an outer ring and a pendulum tongue;

[0007] A scratching head component, disposed between the outer ring and the oscillating tongue, is used to absorb the energy generated when the oscillating tongue vibrates;

[0008] A card slot is provided on the inner wall of the outer ring;

[0009] A buffer element is disposed on the inner wall of the slot, serving to limit movement and provide cushioning.

[0010] Preferably, the swivel head includes a swivel beam disposed between the outer ring and the swing tongue. The upper and lower end faces of the swivel beam are provided with telescopic grooves, and there are several of them. Each telescopic groove has a set of elastic clips embedded in its inner wall.

[0011] Preferably, the buffer includes a fixing frame disposed on the inner wall of the slot, and elastic pads are disposed at both the upper and lower ends of the fixing frame, and a water bladder bag for storing buffer solution is disposed between the elastic pads.

[0012] The water bladder is positioned around the swing tongue.

[0013] Preferably, a tension plate is provided between the swivel beam and the swing tongue, and a plurality of springs are provided between the tension plate and the outer ring.

[0014] Preferably, the gap between the swing tongue and the outer ring is only 0.15mm, which is used to solve the left and right limiting of the outer ring and the swing tongue, and at the same time solves the anti-vibration limiting of the swing plate in the X and Y directions, improving the anti-vibration performance to 25g and the impact resistance performance to 3000g.

[0015] Preferably, the spring is inclined at 15 degrees in the horizontal direction;

[0016] Furthermore, the stretching plate is elastic.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] By setting expansion grooves on both sides of the toggle beam, and setting a set of elastic clips inside each expansion groove, the toggle beam can be made more resistant to bending through this series of actions. With the cooperation of the tension plate, multiple springs are used to diagonally pull between the tension plate and the outer ring, which can improve the tensile strength of the toggle beam and thus greatly improve its service life.

[0019] The interaction between the fixing frame, elastic pad, and liquid-filled water bladder on the outer ring reduces the vibration amplitude of the swing tongue and the scratching beam, resulting in a longer service life and greater durability of the swing plate device. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the oscillating plate structure of this utility model;

[0022] Figure 2 This is a top view of the structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the flexible beam structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the toggle head structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the buffer structure of this utility model.

[0026] As indicated by the markings in the diagram: 1. Outer ring; 2. Swing tongue; 3. Buffer; 4. Swing head; 5. Tension plate; 6. Spring; 7. Slot; 31. Fixing frame; 32. Elastic pad; 33. Water bladder; 41. Swing head beam; 42. Telescopic groove; 43. Elastic clamp. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. The preferred embodiments of this utility model will now be described in more detail with reference to the accompanying drawings. Although preferred embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this utility model more thorough and complete, and to fully convey the scope of this utility model to those skilled in the art.

[0028] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0029] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0030] In the description of this utility model, it should be understood that the terms "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] It should be understood that although the terms "first," "second," "third," etc., may be used to describe various components in this invention, this information should not be limited to these terms. These terms are only used to distinguish components of the same type from each other. For example, without departing from the scope of this invention, a first component may also be referred to as a second component, and similarly, a second component may also be referred to as a first component. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] The technical solutions of the embodiments of this utility model are described in detail below with reference to the accompanying drawings:

[0034] A shock-resistant pendulum structure for a quartz flexible accelerometer includes: an outer ring 1 and a pendulum tongue 2;

[0035] The scratching head component 4 is located between the outer ring 1 and the swing tongue 2, and is used to absorb the energy generated when the swing tongue 2 vibrates;

[0036] Card slot 7 is located on the inner wall of outer ring 1;

[0037] The buffer 3 is set on the inner wall of the slot 7, and serves to limit and buffer movement.

[0038] Specifically, the scuffing component 4 includes a scuffing beam 41 disposed between the outer ring 1 and the swing tongue 2. The upper and lower end faces of the scuffing beam 41 are provided with telescopic grooves 42, and there are several of them. Each telescopic groove 42 has a set of elastic clips 43 embedded in its inner wall.

[0039] Specifically, the buffer 3 includes a fixing frame 31 set on the inner wall of the slot 7, and elastic pads 32 are provided at both the upper and lower ends of the fixing frame 31. A water bladder bag 33 for storing buffer solution is provided between the elastic pads 32.

[0040] The water bladder 33 is positioned around the swing tongue 2.

[0041] Specifically, a tension plate 5 is provided between the swivel beam 41 and the swing tongue 2, and several springs 6 are provided between the tension plate 5 and the outer ring 1.

[0042] Specifically, the gap between the swing tongue 2 and the outer ring 1 is only 0.15mm, which is used to solve the left and right limit of the outer ring 1 and the swing tongue 2, and at the same time solve the seismic limit of the swing plate in the X and Y directions, improving the seismic performance to 25g and the impact resistance to 3000g.

[0043] Specifically, spring 6 is tilted at a 15-degree angle in the horizontal direction;

[0044] Furthermore, the stretching plate 5 is elastic.

[0045] Example 1

[0046] In this embodiment, refer to Figures 1 to 5 To address the issue of the sway bar 2 bending and breaking under stress during vibration, the specific technology is as follows:

[0047] Because several telescopic grooves 42 are provided on the sway beam 41, and each telescopic groove 42 is provided with a set of elastic clips 43, when the swing tongue 2 vibrates, the stress given to the sway beam 41 by the swing tongue 2 will be quickly contracted by the telescopic grooves 42 and elastic clips 43. Because a tension plate 5 is provided between the sway beam 41 and the swing tongue 2, and the tension plate 5 is tough, and several springs 6 are provided between the tension plate 5 and the outer ring 1, the tensile performance of the sway beam 41 can be increased.

[0048] It should be noted that both the telescopic groove 42 and the elastic clip 43 are arc-shaped. When the swing tongue 2 drives the deflector beam 41 to bend upward, the upper elastic clip 43 will be squeezed and deformed inward by the action of the telescopic groove 42, while the lower elastic clip 43 will be stretched outward. Similarly, when the deflector beam 41 bends downward, the upper elastic clip 43 will be stretched, while the lower elastic clip 43 will be squeezed, thus effectively alleviating the situation where the deflector beam 41 breaks due to stress.

[0049] Example 2

[0050] This embodiment is based on Embodiment 1, and refers to... Figures 1 to 5 The specific technologies are as follows:

[0051] By setting a fixing frame 31, an elastic pad 32 and a water bag 33 inside the outer ring 1, and filling the water bag 33 with four-fifths liquid, when the swing tongue 2 vibrates, the swing tongue 2 strikes the water bag 33, which can effectively buffer the impact and absorb the energy of the swing tongue 2 vibration, thereby reducing the stress on the head beam 41 and improving the durability of the head beam 41.

[0052] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the present invention embodiments can be adjusted, combined, and deleted according to actual needs, and the structure in the device of the present invention embodiments can be combined, divided, and deleted according to actual needs.

[0053] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A shock-resistant pendulum structure for a quartz flexible accelerometer, characterized in that, include: Outer ring (1) and oscillating tongue (2); The scratching head component (4) is disposed between the outer ring (1) and the swing tongue (2) to absorb the energy generated when the swing tongue (2) vibrates; A card slot (7) is provided on the inner wall of the outer ring (1); The buffer (3) is disposed on the inner wall of the slot (7) and serves to limit and buffer.

2. The quartz flexible accelerometer shock-resistant pendulum structure according to claim 1, characterized in that, The swivel head component (4) includes a swivel head beam (41) disposed between the outer ring (1) and the swing tongue (2). The upper and lower end faces of the swivel head beam (41) are provided with telescopic grooves (42), and there are several of them. Each telescopic groove (42) has a set of elastic clips (43) embedded in its inner wall.

3. The impact-resistant pendulum structure for a quartz flexible accelerometer according to claim 1, characterized in that, The buffer (3) includes a fixing frame (31) disposed on the inner wall of the slot (7), and elastic pads (32) are provided at both the upper and lower ends of the fixing frame (31), and a water bag (33) for storing buffer solution is disposed between the elastic pads (32). The water bladder (33) is positioned around the swing tongue (2).

4. The impact-resistant pendulum structure for a quartz flexible accelerometer according to claim 2, characterized in that, A tension plate (5) is provided between the swivel beam (41) and the swing tongue (2), and a plurality of springs (6) are provided between the tension plate (5) and the outer ring (1).

5. The impact-resistant pendulum structure for a quartz flexible accelerometer according to claim 1, characterized in that, The gap between the swing tongue (2) and the outer ring (1) is only 0.15mm, which is used to solve the left and right limit of the outer ring (1) and the swing tongue (2), and at the same time solve the seismic limit of the swing plate in the X and Y directions, improving the seismic performance to 25g and the impact resistance to 3000g.

6. The impact-resistant pendulum structure for a quartz flexible accelerometer according to claim 4, characterized in that, The spring (6) is tilted at a 15-degree angle in the horizontal direction; Furthermore, the stretching plate (5) is elastic.

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