CN216160667U - High-sensitivity uniaxial acceleration sensor - Google Patents

Abstract

The utility model discloses a high-sensitivity uniaxial acceleration sensor, which relates to the field of acceleration sensors and comprises a sensor body and a sensor outer shell, wherein the sensor outer shell comprises a plurality of crimping shells, the crimping shells are fixedly installed with each other, fixed supporting pieces for dispersing impact force are installed among the crimping shells, and buffering mechanisms for reducing vibration are installed in the crimping shells; buffer gear is including protecting the shell board, it is in to protect shell board slidable mounting in the crimp shell, install elastic element on the lateral wall of protection shell board, elastic element's one end is installed on the lateral wall of crimp shell. The utility model can reduce the vibration of the sensor body when collision occurs again, thereby reducing the influence on sensitive components inside the sensor and reducing the probability of equipment failure.

Description

High-sensitivity uniaxial acceleration sensor

Technical Field

The utility model relates to the field of acceleration sensors, in particular to a high-sensitivity single-axis acceleration sensor.

Background

An acceleration sensor is a sensor capable of measuring acceleration. The acceleration sensor is generally composed of a mass block, a damper, an elastic element, a sensitive element, an adaptive circuit and the like, in the acceleration process, the acceleration value is obtained by measuring the inertial force borne by the mass block by the sensor according to the Newton's second law, and common acceleration sensors comprise a capacitor type, an inductance type, a strain type, a piezoresistive type, a piezoelectric type and the like according to the difference of sensitive elements of the sensor.

The sensitive components and parts of present part unipolar acceleration sensor are piezoceramics, and the shell is firm titanium alloy, and acceleration sensor adopts laser welding's mode to prevent the dust and gets into, and though the rigidity of shell is great like this, when the sensor falls or when colliding in transportation and use, the sensor is inside can produce great vibrations to cause the influence to inside sensitive components and parts, consequently, we propose a high sensitivity unipolar acceleration sensor and solve this problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-sensitivity uniaxial acceleration sensor to solve the problems in the background technology, and the utility model can reduce the vibration of a sensor body when collision occurs, thereby reducing the influence on sensitive components inside the sensor and reducing the probability of equipment failure.

In order to achieve the above purpose, the present application provides the following technical solutions: the high-sensitivity uniaxial acceleration sensor comprises a sensor body and a sensor outer shell, wherein the sensor outer shell comprises a plurality of bending shells, the plurality of bending shells are fixedly mounted with each other, fixed supporting pieces for dispersing impact force are mounted among the plurality of bending shells, and buffering mechanisms for relieving vibration are mounted in the plurality of bending shells; buffer gear is including protecting the shell board, it is in to protect shell board slidable mounting in the crimp shell, install elastic element on the lateral wall of protection shell board, elastic element's one end is installed on the lateral wall of crimp shell.

Borrow by above-mentioned structure, the protective housing board can with the laminating of crimp casing for the shell of whole sensor guarantees smooth effect, then borrows the elasticity of elastic element to cushion, falls or receives when colliding at the sensor in the transportation, can cushion through the buffer gear on the crimp casing earlier, reduces the holistic vibration of sensor, thereby alleviates the influence to the inside sensitive components and parts of sensor, reduces the probability that equipment broke down. Meanwhile, when the sensor is extruded, the buffer mechanism can be timely reset after being compressed, the degree of probability of deformation of the sensor shell is reduced, meanwhile, the fixed support piece can conduct force received by the single face of the sensor to the whole shell, the probability of deformation is further reduced, protection of internal sensitive components is facilitated, and meanwhile, attractiveness of the whole sensor shell is guaranteed.

Preferably, the fixed support comprises a support tube, two sliding rods are slidably mounted in the support tube, and a sliding sealing connection is arranged between the two sliding rods and the support tube.

Furthermore, the advantage of this design is that through the mode that the slide bar slides in the support tube, can make fixed support piece still possess the cushioning effect simultaneously when playing the supporting role.

Preferably, one end of each of the two sliding rods is fixedly provided with a piston plate, and the piston plates are slidably arranged in the supporting pipes.

Furthermore, the structural design can ensure that the sliding rod and the supporting tube have better sealing effect when sliding relatively, and simultaneously, the sealing mode can be simpler.

Preferably, install the spacing ring on the inside wall of crimp casing, install on the lateral wall of protection shell plate and remove the screens ring, the cross section that removes the screens ring is L shape structure.

Further, this kind of structural design can remove the spacing to the protection shell board through spacing ring and removal screens ring, avoids the protection shell board roll-off crimp casing.

Preferably, a dustproof sealing ring is installed between the protective shell plate and the crimping shell, and the dustproof sealing ring is installed on the outer side of the movable clamping ring.

Further, this kind of structural design, dustproof sealing ring can guarantee that whole equipment is in dustproof sealing's environment for equipment can be in and use in the environment that humidity is great or the dust is many.

Preferably, a plurality of heat dissipation holes are formed in the side wall of one of the crimping housings, a heat dissipation hole is formed in the side wall of one of the protection shell plates, and a heat conduction sealing plug is arranged in the heat dissipation hole.

Further, this kind of structural design, can be when the temperature is higher, the inside components and parts of the sensor of being convenient for give off the heat to between crimp casing and the protection shell board, then accelerate the heat dissipation through the heat conduction sealing plug that sets up in the heat extraction hole.

In conclusion, the technical effects and advantages of the utility model are as follows:

1. according to the utility model, the buffer mechanism on the bent side shell is used for buffering, so that the vibration of the whole sensor is reduced, the failure probability of equipment is reduced, and when the sensor is extruded, the buffer mechanism can be timely reset after being compressed, so that the deformation probability of the sensor shell is reduced, the protection of internal sensitive components is facilitated, and the attractiveness of the whole sensor shell is ensured.

2. According to the utility model, the protective shell plate is moved and limited through the limiting ring and the movable clamping ring, the protective shell plate is prevented from sliding out of the flanging shell, then the arranged dustproof sealing ring can ensure that the whole equipment is in a dustproof and sealed environment, so that the equipment can be used in an environment with high humidity or much dust, in addition, the heat dissipation holes can be used when the temperature is high, the heat can be conveniently dissipated between the flanging shell and the protective shell plate by components in the sensor, and then the heat dissipation is accelerated through the heat conduction sealing plugs arranged in the heat dissipation holes.

Drawings

Fig. 1 is a schematic perspective view of a high-sensitivity uniaxial acceleration sensor in this embodiment;

FIG. 2 is a schematic cross-sectional view of the fixing support of the present embodiment;

FIG. 3 is a schematic perspective view of the crimping shell in this embodiment;

FIG. 4 is a schematic cross-sectional view of the crimp housing in the present embodiment;

fig. 5 is an enlarged schematic view of a portion a in fig. 4.

In the figure: 1. a sensor body; 2. a protective housing panel; 3. a fixed support; 4. heat removal holes; 5. supporting a tube; 6. a piston plate; 7. a slide bar; 8. crimping the shell; 9. heat dissipation holes; 10. an elastic element; 11. a dust-proof sealing ring; 12. moving the position clamping ring; 13. a limit ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1-4, a high-sensitivity uniaxial acceleration sensor includes a sensor body 1 and a sensor housing, the sensor housing includes a plurality of crimping cases 8, the crimping cases 8 are fixedly mounted to each other, fixing supports 3 for dispersing impact force are mounted between the crimping cases 8, a buffer mechanism for reducing vibration is mounted in the crimping cases 8, as shown in fig. 4, the buffer mechanism includes a protective shell plate 2, the protective shell plate 2 is slidably mounted in the crimping cases 8, a plurality of heat dissipation holes 9 are formed in a side wall of one of the crimping cases 8, as shown in fig. 2, a heat dissipation hole 4 is formed in a side wall of one of the protective shell plates 2, a sealing plug is disposed in the heat dissipation hole 4 for heat conduction, and this structural design facilitates heat dissipation from components inside the sensor to between the crimping case 8 and the protective shell plate 2 at higher temperature, and then the heat dissipation is accelerated by the heat-conducting sealing plug arranged in the heat-dissipating hole 4.

As shown in fig. 4, install elastic element 10 on the lateral wall of protection shell plate 2, elastic element 10 sets up to the compression spring structure, the one end of elastic element 10 is installed on the lateral wall of crimp casing 8, the benefit of design like this is, protection shell plate 2 can laminate with crimp casing 8, make the shell of whole sensor guarantee smooth effect, then cushion with the help of elastic force of elastic element 10, as shown in fig. 5, install spacing ring 13 on crimp casing 8's the inside wall, install removal screens ring 12 on protection shell plate 2's the lateral wall, the cross section of removal screens ring 12 is the L shape structure, this kind of structural design, can remove spacing to protection shell plate 2 through spacing ring 13 and removal screens ring 12, avoid protection shell plate 2 roll-off crimp casing 8.

As shown in FIG. 5, a dustproof sealing ring 11 is installed between the protective shell plate 2 and the crimp housing 8, the dustproof sealing ring 11 is installed on the outer side of the movable clamping ring 12, and due to the structural design, the dustproof sealing ring 11 can ensure that the whole equipment is in a dustproof sealing environment, so that the equipment can be used in an environment with high humidity or much dust.

Based on the above structure: fall or receive when the collision at the sensor in the transportation, can cushion through the buffer gear on the crimp casing 8 earlier, reduce the vibration of sensor body 1, thereby alleviate the influence to the inside sensitive components and parts of sensor, reduce the probability that equipment breaks down, and when the sensor receives the extrusion, buffer gear can in time reset after being compressed, reduce the probability that the sensor shell takes place deformation, the fixed support piece 3 that sets up simultaneously can give whole shell with the power conduction that the sensor single face received, further reduce the probability of deformation, be favorable to the protection to inside sensitive components and parts, also be favorable to guaranteeing the aesthetic property of whole sensor shell simultaneously.

As a preferred embodiment of this embodiment, as shown in fig. 2, the fixed supporting component 3 includes a supporting tube 5, two sliding rods 7 are slidably mounted in the supporting tube 5, a piston plate 6 is fixedly mounted at one end of each of the two sliding rods 7, the piston plate 6 is slidably mounted in the supporting tube 5, the piston plate 6 is arranged to enable the sliding rods 7 and the supporting tube 5 to have better sealing effect when sliding relatively, and also enable the sealing manner to be simpler, so that the advantage of this design is that the fixed supporting component 3 can have a buffering effect while playing a supporting role by the way that the sliding rods 7 slide in the supporting tube 5,

this practical theory of operation: when the sensor falls or receives the collision in the transportation, can extrude protection shell plate 2 for protection shell plate 2 cushions through elastic element 10's elasticity, takes place relative slip's in-process at protection shell plate 2 and crimp casing 8, and dust sealing ring 11 is used for guaranteeing that whole sensor is in encapsulated situation, has reduced the vibration of equipment at the collision in-process.

When the external force is too large, the elastic element 10 is completely compressed, the force applied to the unilateral crimping shell 8 is transmitted to the sliding rod 7, then the sliding rod 7 transmits the pressure to the other sliding rod 7 in an air pressure mode by the supporting tube 5, and then the force is transmitted to the crimping shell 8 on the other side by the leading sliding rod 7, so that the whole shell body is stressed, and when the external force disappears, the protective shell plate 2 is reset under the elastic force of the elastic element 10 and is limited by the arranged movable clamping ring 12 and the limiting ring 13.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims (6)

1. High sensitivity unipolar acceleration sensor, including sensor body (1) and sensor shell body, its characterized in that: the sensor outer shell comprises a plurality of bending shells (8), the plurality of bending shells (8) are fixedly mounted with each other, fixed supporting pieces (3) used for dispersing impact force are mounted among the plurality of bending shells (8), and a buffer mechanism used for reducing vibration is mounted in the plurality of bending shells (8); buffer gear is including protection shell board (2), protection shell board (2) slidable mounting be in crimping casing (8), install elastic element (10) on the lateral wall of protection shell board (2), the one end of elastic element (10) is installed on the lateral wall of crimping casing (8).

2. The high-sensitivity uniaxial acceleration sensor according to claim 1, characterized in that: the fixed supporting piece (3) comprises a supporting pipe (5), two sliding rods (7) are arranged in the supporting pipe (5) in a sliding mode, and the two sliding rods (7) are connected with the supporting pipe (5) in a sliding and sealing mode.

3. The high-sensitivity uniaxial acceleration sensor according to claim 2, characterized in that: and one end of each of the two sliding rods (7) is fixedly provided with a piston plate (6), and the piston plates (6) are slidably arranged in the supporting tubes (5).

4. The high-sensitivity uniaxial acceleration sensor according to claim 1, characterized in that: install spacing ring (13) on the inside wall of crimp casing (8), install removal screens ring (12) on the lateral wall of protection shell board (2), the cross section that removes screens ring (12) is L shape structure.

5. The high-sensitivity uniaxial acceleration sensor according to claim 4, wherein: protection shell board (2) with install dust sealing ring (11) between crimp casing (8), dust sealing ring (11) are installed remove the outside of screens ring (12).

6. The high-sensitivity uniaxial acceleration sensor according to claim 1, characterized in that: the side wall of one of the crimping shells (8) is provided with a plurality of heat dissipation holes (9), the side wall of one of the protection shell plates (2) is provided with a heat exhaust hole (4), and a heat conduction sealing plug is arranged in the heat exhaust hole (4).

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