Watertight accelerometer with high sealing performance

Abstract

The utility model relates to a watertight accelerometer with high sealing performance, which is applied to the technical field of accelerometers, and realizes that when the accelerometer is used for timing, a connecting wire can firstly penetrate into a protective cover, then the connecting wire is wound on a spring, and then a connector on the connecting wire is inserted into a port for fixed connection. At the moment, the protective cover is fixed to the base, one end of the spring is fixed to the connector, the other end of the spring abuts against the inner wall of the protective cover, then the two clamps outside the protective cover are clamped through the handle, and the two clamps are clamped through the limiting blocks and the limiting grooves to position the accelerometer. The connecting wire in the protective cover is kept still through limiting of the hoop, the connecting wire can be telescopically and elastically retracted and released through the spring even if the hoop is loosened, the purposes of buffering and damping are achieved, and the effect that the connecting wire and the accelerometer are not loosened due to pulling when the accelerometer is used for vibration is effectively achieved.

Description

Technical Field

[0001] The utility model relates to a watertight accelerometer with high sealing performance, in particular to a watertight accelerometer with high sealing performance applied in the technical field of accelerometers. Background Art

[0002] An accelerometer is a typical structural vibration measurement sensor, which can be reliably installed on a structure. When the structure vibrates, the electrical elements in the sensor are affected by the inertial mass block to generate charges. The charge output is proportional to the vibration acceleration. The charge output is amplified by a charge amplifier and converted into a voltage signal, which is transmitted to the display instrument, thereby linearly converting the vibration acceleration of the measured structure and achieving the purpose of vibration measurement. Conventional accelerometers have separate sensor interfaces and measurement wire connectors. This type of accelerometer is suitable for measuring the vibration of structures in conventional air. For vibration measurement of underwater structures, fluid will enter the wires and piezoelectric elements from the interface. Since the fluid is conductive, the insulation capacity of the sensor is reduced and the measurement signal is completely distorted. This type of ordinary accelerometer cannot be used for underwater measurement.

[0003] The specification of Chinese patent CN219200607U discloses an accelerometer assembly, which includes: an accelerometer body, the accelerometer body includes a connecting harness, and the connecting harness is an output port of the accelerometer body; a base, the accelerometer body is arranged on the base; a high-temperature resistant drag assembly, the drag assembly is connected to the base. The solution of the utility model can be directly taken out in a high-temperature test environment after the accelerometer is completed or fails in the middle of the work, so that the accelerometer can be replaced in time, thereby improving the test efficiency and ensuring the test accuracy and safety.

[0004] The specification of Chinese patent CN211955546U discloses an accelerometer, including an accelerometer housing, an output shaft passing through a half hole and a seal, etc. When the accelerometer housing is accelerated along the input shaft, the float acts on the torquer due to inertia, and the torquer transmits the force signal to the external display through the output shaft, thereby displaying the magnitude and direction of the acceleration. When the first half housing and the second half housing are integrally connected, the plug-in groove and the plug-in protrusion are connected to form a first line of defense to prevent the floating liquid from leaking, thereby preventing the floating liquid from leaking out; the side wall of the sealing surface is in close contact with the side wall of the output shaft, and the seal constitutes a second line of defense to prevent the floating liquid from leaking out, thereby preventing the floating liquid from leaking out.

[0005] The existing accelerometer has no protective mechanism during use, and the sensor cannot be protected, so it is easy to be hit and damaged. Utility Model Content

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the utility model is that the existing accelerometer has no protective mechanism during use, and the sensor cannot be protected, so it is easy to be impacted and damaged.

[0007] To solve the above problems, the utility model provides a watertight accelerometer with high sealing performance, including a base with first bolts at four corners, an accelerometer fixedly connected to the top of the base, a protective cover detachably connected to the outside of the accelerometer, a connector with a port fixedly connected to the side end of the accelerometer, a connecting wire extending to the outside of the protective cover detachably connected to the connector, and the connecting wire is connected to the port through an electrical terminal, a spring is sleeved on the connecting wire located in the protective cover, and the connecting wire is wound on the spring, one end of the spring is fixedly connected to the connector, and the other end is in conflict with the side wall of the protective cover, the outer end of the protective cover located on the outer circle of the connecting wire is symmetrically slidably connected to a clamp with a handle, and the two clamps are engaged, a second slider is fixedly connected to the clamp near one end of the protective cover, the protective cover is opened with a first slide groove corresponding to the second slider, and the second slider is slidably connected to the first slide groove.

[0008] In the above accelerometer, the effect of preventing the accelerometer from becoming loose due to pulling of the connecting wire and the accelerometer when the accelerometer is in use and vibrating is effectively achieved.

[0009] As a further improvement of the present application, a slot is drilled at the top of the base located on the outer ring of the accelerometer.

[0010] As a further improvement of the present application, a card block is fixedly connected to the bottom end of the protective cover, and the card block is engaged with the card slot.

[0011] As a further improvement of the present application, a second slide groove is excavated on the accelerometer, a first slider corresponding to the second slide groove is fixedly connected to the inner wall of the protective cover, and the first slider is slidably connected to the second slide groove.

[0012] As another improvement of the present application, a first screw hole is drilled on the second slide groove, a second screw hole is drilled on the first sliding block, and a second bolt is threadedly connected between the second screw hole and the first screw hole.

[0013] As another improved supplement of the present application, a protective pad is fixedly connected to the inner wall of the clamp, and the protective pad is in contact with the connecting wire.

[0014] As another improved supplement of the present application, a limiting block is fixedly connected to the upper clamp, a limiting groove corresponding to the positioning block is bored on the lower clamp, and the limiting block is engaged with the limiting groove.

[0015] To sum up, this solution can be realized. When the accelerometer is used, the connecting wire can be first inserted into the protective cover, and then the connecting wire is wrapped around the spring, and then the connector on the connecting wire is inserted into the port for fixed connection. At this time, the protective cover is fixed to the base. At this time, one end of the spring is fixed to the connector, and the other end is in contact with the inner wall of the protective cover. Then, the two clamps outside the protective cover are moved closer to each other by holding the handle, so that the protective pad wraps the surface of the connecting wire. At this time, the two clamps are positioned by the limit blocks and the limit grooves. When the accelerometer vibrates and pulls during use, the connecting wire in the protective cover is kept stationary by the limitation of the clamps. Even if the clamps are loose, the connecting wire can be elastically retracted and expanded by the spring, which plays a role in buffering and shock absorption, effectively achieving the effect that when the accelerometer is used and vibrates, the loosening phenomenon between the connecting wire and the accelerometer will not be caused by pulling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Axonometric diagram of the accelerometer of the first and second embodiments of the present application;

[0017] Figure 2 For the first implementation of this application Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a structural diagram of an accelerometer according to the first and second embodiments of the present application;

[0019] Figure 4 For the second implementation of this application Figure 2 Enlarged view of point B in the middle;

[0020] Figure 5 This is a structural diagram of an accelerometer base according to a second embodiment of the present application;

[0021] Figure 6 This is a schematic cross-sectional view of a screw hole in a protective cover according to a second embodiment of the present application;

[0022] Figure 7 This is a spring structure diagram of the first embodiment of the present application.

[0023] Description of the numbers in the figure:

[0024] 1. Base; 2. First bolt; 3. Protective cover; 4. Wire connection; 5. Clamp; 6. Handle; 7. First slide groove; 8. Protective pad; 9. First slider; 10. Second bolt; 11. Block; 12. Second slide groove; 13. First screw hole; 14. Slot; 15. Connector; 16. Spring; 17. Second screw hole; 18. Port; 19. Power terminal; 20. Accelerometer. DETAILED DESCRIPTION

[0025] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0026] The first implementation method:

[0027] Figure 1-3 and Figure 7 A watertight accelerometer with high sealing performance is shown, including a base 1 with first bolts 2 at four corners, an accelerometer 20 is fixedly connected to the top of the base 1, a protective cover 3 is detachably connected to the outside of the accelerometer 20, a connector 15 with a port 18 is fixedly connected to the side end of the accelerometer 20, a connecting wire 4 extending to the outside of the protective cover 3 is detachably connected to the connector 15, and the connecting wire 4 is connected to the port 18 through an electrical terminal 19. A spring 16 is sleeved on the connecting wire 4 located in the protective cover 3, and the connecting wire 4 is wound on the spring 16, one end of the spring 16 is fixedly connected to the connector 15, and the other end is in contact with the side wall of the protective cover 3, the outer end of the protective cover 3 located on the outer circle of the connecting wire 4 is symmetrically slidably connected to a clamp 5 with a handle 6, and the two clamps 5 are engaged, and a second slider is fixedly connected to the clamp 5 near one end of the protective cover 3, the protective cover 3 is opened with a first slide groove 7 corresponding to the second slider, and the second slider is slidably connected to the first slide groove 7.

[0028] The present invention can realize that when the accelerometer 20 is used, the connecting wire 4 can be first inserted into the protective cover 3, and then the connecting wire 4 is wound around the spring 16, and then the connector 15 on the connecting wire 4 is inserted into the port 18 for fixed connection. At this time, the protective cover 3 is fixed to the base 1, and at this time, one end of the spring 16 is fixed to the connector 15, and the other end is in contact with the inner wall of the protective cover 3. Then, the two clamps 5 outside the protective cover 3 are moved closer to each other by holding the handle 6, so that the protective pad 8 wraps the surface of the connecting wire 4. At this time, the two clamps 5 are positioned by the limit blocks and the limit grooves. When the accelerometer 20 is vibrated and pulled during use, the connecting wire 4 in the protective cover 3 is kept stationary by the limit of the clamp 5. Even if the clamp 5 is loose, the connecting wire 4 can be elastically retracted and released by the spring 16, which plays a role in buffering and shock absorption, and effectively achieves the effect that when the accelerometer 20 is used and vibrates, the loosening phenomenon between the connecting wire 4 and the accelerometer 20 will not be caused by pulling.

[0029] The second implementation method:

[0030] Figure 1 and Figure 3-6It is shown that a groove 14 is bored at the top of the base 1 located on the outer ring of the accelerometer 20, a block 11 is fixedly connected to the bottom end of the protective cover 3, and the block 11 is engaged with the groove 14, a second groove 12 is bored on the accelerometer 20, a first slider 9 corresponding to the second groove 12 is fixedly connected to the inner wall of the protective cover 3, and the first slider 9 is slidably connected to the second groove 12, a first screw hole 13 is bored on the second groove 12, a second screw hole 17 is bored on the first slider 9, and a second bolt 10 is threadedly connected between the second screw hole 17 and the first screw hole 13, a protective pad 8 is fixedly connected to the inner wall of the clamp 5, and the protective pad 8 is in conflict with the connecting wire 4, a limiting block is fixedly connected to the upper clamp 5, a limiting groove corresponding to the positioning block is bored on the lower clamp 5, and the limiting block is engaged with the limiting groove.

[0031] This solution can achieve that when the accelerometer 20 is used, the connecting wire 4 can be passed through the protective cover 3 and connected to the connector 15, and then the protective cover 3 can be slid downward through the first slider 9 and the second slide groove 12, so that the block 11 is engaged with the slot 14, and a layer of sealing gasket is fixedly connected to the outer wall of the block 11, so as to seal the connection between the slot 14 and the block 11. At this time, the first screw hole 13 coincides with the second screw hole 17, so that the first slider 9 passes through the second screw hole 17 and penetrates into the first screw hole 13, and then is fixed by twisting, so that the protective cover 3 is fixed to the base 1, so as to achieve the effect of quick disassembly and assembly, and during the vibration process, the protective cover 3 can be used for sound insulation and noise reduction, so as to effectively protect the accelerometer 20 and avoid impact and damage.

[0032] In view of current practical needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A watertight accelerometer with high sealing performance, comprising a base (1) with first bolts (2) at four corners, characterized in that: The top of the base (1) is fixedly connected to an accelerometer (20), the outside of the accelerometer (20) is detachably connected to a protective cover (3), the side of the accelerometer (20) is fixedly connected to a connector (15) with a port (18), the connector (15) is detachably connected to a connection wire (4) extending outside the protective cover (3), and the connection wire (4) is connected to the port (18) via a connection terminal (19), a spring (16) is sleeved on the connection wire (4) located inside the protective cover (3), and the connection wire (4) is detachably connected to the port (18). ) is wound around a spring (16), one end of the spring (16) is fixedly connected to the connector (15), and the other end is in contact with the side wall of the protective cover (3), the outer end of the protective cover (3) located on the outer ring of the connecting wire (4) is symmetrically slidably connected to a clamp (5) with a handle (6), and the two clamps (5) are engaged with each other, and the clamp (5) is fixedly connected to a second slider near one end of the protective cover (3), and the protective cover (3) is cut with a first slide groove (7) corresponding to the second slide groove, and the second slide groove is slidably connected to the first slide groove (7).

2. A watertight accelerometer with high sealing performance according to claim 1, characterized in that: A slot (14) is bored at the top of the base (1) located on the outer ring of the accelerometer (20).

3. A watertight accelerometer with high sealing performance according to claim 2, characterized in that: A clamping block (11) is fixedly connected to the bottom end of the protective cover (3), and the clamping block (11) is engaged with the clamping slot (14).

4. A watertight accelerometer with high sealing performance according to claim 1, characterized in that: The accelerometer (20) is provided with a second slide groove (12), the inner wall of the protective cover (3) is fixedly connected with a first sliding block (9) corresponding to the second slide groove (12), and the first sliding block (9) is slidably connected to the second slide groove (12).

5. A watertight accelerometer with high sealing performance according to claim 4, characterized in that: A first screw hole (13) is bored on the second slide groove (12), a second screw hole (17) is bored on the first slide block (9), and a second bolt (10) is threadedly connected between the second screw hole (17) and the first screw hole (13).

6. A watertight accelerometer with high sealing performance according to claim 1, characterized in that: The inner wall of the clamp (5) is fixedly connected with a protective pad (8), and the protective pad (8) is in contact with the connecting wire (4).

7. A watertight accelerometer with high sealing performance according to claim 1, characterized in that: The clamp (5) located at the top is fixedly connected to a limiting block, and the clamp (5) located at the bottom is provided with a limiting groove corresponding to the positioning block, and the limiting block is engaged with the limiting groove.

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