CN211955546U

CN211955546U - Accelerometer

Info

Publication number: CN211955546U
Application number: CN202020019109.0U
Authority: CN
Inventors: 徐超; 丁澄; 梁亚飞
Original assignee: Shanghai Deuta Electronic and Electrical Equipment Co Ltd
Current assignee: Shanghai Deuta Electronic and Electrical Equipment Co Ltd
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2020-11-17
Anticipated expiration: 2030-01-06

Abstract

The utility model discloses an accelerometer among the accelerometer technical field, pass half hole and sealing member etc. including accelerometer shell, output shaft, when the accelerometer shell was done accelerated motion along the input shaft, the float acted on the torquer because of inertia, and the torquer transmits this force signal to external display through the output shaft to demonstrate the size and the direction of acceleration. When the first half shell and the second half shell are integrally formed and connected, the inserting groove and the inserting protrusion are clamped to form a first defense line for preventing the leakage of the floating liquid and preventing the leakage of the floating liquid; the side wall of the sealing surface is in close contact with the side wall of the output shaft, and the sealing element forms a second defense line for preventing the leakage of the floating liquid and preventing the leakage of the floating liquid.

Description

Accelerometer

Technical Field

The utility model relates to an accelerometer technical field, specific field is an accelerometer.

Background

An accelerometer is a meter that measures acceleration. Acceleration measurement is a measurement technique commonly used in engineering technology, and when an object has a large acceleration, the object and its instrument and other objects without relative acceleration are subjected to a force which can generate the same large acceleration, i.e. a dynamic load. Acceleration is measured in anticipation of the dynamic load.

The working principle is as follows: when the instrument shell does accelerated motion along the input shaft, the detection mass rotates around the output shaft due to inertia, the sensing element converts the rotation angle into an electric signal, and the electric signal is amplified and then fed to the torquer to form a closed loop. The feedback moment generated by the torquer is balanced with the inertia moment suffered by the detection mass. The electrical signal (magnitude of current or number of pulses per unit time) fed into the torquer is used to measure the magnitude and direction of acceleration. The liquid floating type accelerometer is that the pendulum assembly is placed in a floater, the buoyancy generated by the floating liquid can unload the load of the floater pendulum assembly to the output shaft, the friction torque of the output shaft is reduced, the precision of the accelerometer is improved, the viscosity of the floating liquid has a damping effect on the pendulum assembly, the dynamic error can be reduced, and the vibration and impact resistance capability is improved.

The existing liquid floating type accelerometer is provided with an outlet hole because an output shaft of the existing liquid floating type accelerometer needs to penetrate out of a shell to be connected with an external terminal, and floating liquid in the existing liquid floating type accelerometer is accompanied with leakage conditions due to a gap between the output shaft and the outlet hole.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an accelerometer to solve the problem of mentioning in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: an accelerometer comprises an accelerometer shell, wherein the accelerometer shell comprises a first half shell and a second half shell, the first half shell and the second half shell are connected in an integrated forming mode to form the accelerometer shell, an insertion groove is formed in the plane side wall of the first half shell, an insertion protrusion in matched connection with the insertion groove is fixedly connected to the plane side wall of the second half shell, and the insertion protrusion is located in the insertion groove;

output shafts penetrate through the half holes to form an output shaft penetrating hole, a sealing piece is arranged at the position, where the output shaft penetrates through the half hole, of the first half shell and the second half shell, the sealing piece comprises an arc-shaped groove, and a sealing surface is integrally formed on the end surface of the arc-shaped groove;

the accelerometer is characterized in that an output shaft penetrates through the accelerometer shell, the side wall of the sealing surface is in close contact with the side wall of the output shaft, torquers are symmetrically arranged in the accelerometer shell and located on the output shaft, a floater is arranged between the two torquers on the output shaft, an unbalanced mass pendulum is arranged in the floater on the output shaft, and floating liquid is filled in the accelerometer shell.

Preferably, the insertion groove and the insertion protrusion are both square frames.

Preferably, the insertion projection is made of an elastic material.

Preferably, the insertion protrusion is fixedly bonded to the planar side wall of the second half housing.

Preferably, the arc-shaped groove and the end face of the output shaft penetrating through the half hole are fixedly bonded.

Preferably, the first half shell and the second half shell are semicircular in vertical section.

Compared with the prior art, the beneficial effects of the utility model are that: an accelerometer, when the shell of the accelerometer makes acceleration movement along an input shaft, the floater acts on the torquer due to inertia, and the torquer transmits a force signal to an external display through the output shaft, so that the magnitude and the direction of the acceleration are displayed. When the first half shell and the second half shell are integrally formed and connected, the inserting groove and the inserting protrusion are clamped to form a first defense line for preventing the leakage of the floating liquid and preventing the leakage of the floating liquid; the side wall of the sealing surface is in close contact with the side wall of the output shaft, and the sealing element forms a second defense line for preventing the leakage of the floating liquid and preventing the leakage of the floating liquid.

Drawings

Fig. 1 is a cross-sectional view of a first half-shell of the present invention;

FIG. 2 is a cross-sectional view of a second half of the housing of the present invention;

FIG. 3 is a right side view of the accelerometer housing of the present invention in an exploded state;

fig. 4 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.

In the figure: the device comprises an accelerometer shell 1, an accelerometer shell 101, a first half shell 102, a second half shell 103, an insertion groove 104, an insertion protrusion 2, an output shaft penetrating through a half hole 3, a sealing piece 301, an arc groove 302, a sealing surface 302, an output shaft 4, a torquer 5, a floater 6 and an unbalanced mass pendulum 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The description of the directions (up, down, left, right, front, and back) is made with reference to the structure shown in fig. 1 of the drawings attached to the specification, but the practical direction of the present invention is not limited thereto.

Example (b):

referring to fig. 1-4, the present invention provides a technical solution: referring to fig. 1 and 2, an accelerometer includes an accelerometer housing 1, where the accelerometer housing 1 includes a first half housing 101 and a second half housing 102, the first half housing 101 and the second half housing 102 are integrally connected to form the accelerometer housing 1, a plugging groove 103 is disposed on a planar side wall of the first half housing 101, a plugging protrusion 104 cooperatively connected with the plugging groove 103 is fixedly connected to a planar side wall of the second half housing 102, the plugging protrusion 104 is located in the plugging groove 103, and when the first half housing 101 and the second half housing 102 are integrally connected, the plugging groove 103 and the plugging protrusion 104 are clamped to form a first line of defense for preventing leakage of a floating liquid and preventing the floating liquid from leaking;

referring to fig. 3, output shafts passing through half holes 2 are respectively arranged at the joints of the first half shell 101 and the second half shell 102, the two output shafts passing through half holes 2 jointly form an output shaft passing hole, the output shaft passing through hole is used for passing through the output shaft 4, referring to fig. 4, a sealing member 3 is arranged at the position where the output shaft passes through half hole 2, the sealing member 3 comprises an arc-shaped groove 301, a sealing surface 302 is integrally formed on the end surface of the arc-shaped groove 301, the arc-shaped groove 301 plays a role in connecting the sealing surface 302, and the arc-shaped groove 301 is fixedly bonded with the end surface of the output shaft passing through half hole 2;

referring to fig. 1, an output shaft 4 penetrates through the accelerometer housing 1, the side wall of the sealing surface 302 is in close contact with the side wall of the output shaft 4, the sealing member 3 forms a second defense line for preventing the leakage of the floating liquid and preventing the leakage of the floating liquid, torquers 5 are symmetrically arranged inside the accelerometer housing 1 and on the output shaft 4, a float 6 is arranged on the output shaft 4 and between the two torquers 5, an unbalanced mass pendulum 7 is arranged on the output shaft 4 and inside the float 6, the accelerometer housing 1 is filled with the floating liquid, when the accelerometer housing 1 performs an accelerated motion along the input shaft, the float 6 acts on the torquers 5 due to inertia, and the torquers 5 transmit a force signal to an external display through the output shaft 4, thereby indicating the magnitude and direction of the acceleration.

Referring to fig. 1 and 2, specifically, the insertion groove 103 and the insertion protrusion 104 are both square, and when the first half casing 101 and the second half casing 102 are integrally formed and connected, the insertion groove 103 and the insertion protrusion 104 are clamped to form a first defense line for preventing the leakage of the floating liquid, so as to prevent the leakage of the floating liquid.

Referring to fig. 3, specifically, the insertion protrusion 104 is made of an elastic material, and when the insertion protrusion 104 is engaged with the insertion groove 103, the engagement between the insertion protrusion 104 and the insertion groove is tighter because the insertion protrusion 104 is made of the elastic material.

Specifically, the insertion protrusion 104 is fixedly adhered to the planar sidewall of the second half shell 102.

Specifically, the arc-shaped groove 301 is fixedly bonded to the end surface of the output shaft passing through the half hole 2.

Specifically, the vertical cross-section of the first half casing 101 and the second half casing 102 is semicircular.

The working principle is as follows: the accelerometer shell 1 comprises a first half shell 101 and a second half shell 102, the first half shell 101 and the second half shell 102 are integrally connected to form the accelerometer shell 1, an insertion groove 103 is formed in the plane side wall of the first half shell 101, an insertion protrusion 104 which is in fit connection with the insertion groove 103 is fixedly connected to the plane side wall of the second half shell 102, the insertion protrusion 104 is located in the insertion groove 103, and when the first half shell 101 and the second half shell 102 are integrally connected, the insertion groove 103 and the insertion protrusion 104 are clamped to form a first defense line for preventing leakage of floating liquid and prevent leakage of the floating liquid; an output shaft passing half hole 2 is respectively arranged at the joint of the first half shell 101 and the second half shell 102, the two output shafts pass through half holes 2 to jointly form an output shaft passing hole, the output shaft passing hole is used for passing through the output shaft 4, a sealing member 3 is arranged at the position where the output shaft passes through half hole 2, the sealing member 3 comprises an arc-shaped groove 301, a sealing surface 302 is integrally formed on the end surface of the arc-shaped groove 301, the arc-shaped groove 301 plays a role in connecting the sealing surface 302, and the arc-shaped groove 301 is fixedly bonded with the end surface of the output shaft passing through half hole 2; an output shaft 4 penetrates through the inside of the accelerometer shell 1, the side wall of the sealing surface 302 is tightly contacted with the side wall of the output shaft 4, the sealing element 3 forms a second defense line for preventing the leakage of the floating liquid and preventing the leakage of the floating liquid, the moment devices 5 are symmetrically arranged in the accelerometer shell 1 and on the output shaft 4, a floater 6 is arranged on the output shaft 4 and between the two torquers 5, an unbalanced mass pendulum 7 is arranged on the output shaft 4 and inside the floater 6, the inside of the accelerometer shell 1 is filled with floating liquid, when the accelerometer shell 1 makes acceleration movement along the input axis, the float 6 acts on the torquer 5 due to inertia, the torquer 5 transmits the force signal to an external display through the output shaft 4, thereby displaying the magnitude and direction of the acceleration.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses the standard parts that use all can purchase from the market, and dysmorphism piece all can be customized according to the record of the description with the drawing.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An accelerometer comprising an accelerometer housing (1), characterized in that: the accelerometer shell (1) comprises a first half shell (101) and a second half shell (102), the first half shell (101) and the second half shell (102) are connected in an integrated forming mode to form the accelerometer shell (1), an insertion groove (103) is formed in the plane side wall of the first half shell (101), an insertion protrusion (104) matched and connected with the insertion groove (103) is fixedly connected to the plane side wall of the second half shell (102), and the insertion protrusion (104) is located in the insertion groove (103);

an output shaft passing half hole (2) is formed in the joint of the first half shell (101) and the second half shell (102) respectively, the two output shafts pass through the half hole (2) to form an output shaft passing hole together, a sealing piece (3) is arranged at the position where the output shaft passes through the half hole (2), the sealing piece (3) comprises an arc-shaped groove (301), and a sealing surface (302) is integrally formed on the end surface of the arc-shaped groove (301);

the novel high-precision accelerometer is characterized in that an output shaft (4) penetrates through the inside of the accelerometer shell (1), the side wall of the sealing surface (302) is in close contact with the side wall of the output shaft (4), torquers (5) are symmetrically arranged on the output shaft (4) inside the accelerometer shell (1), a floater (6) is arranged between the two torquers (5) on the output shaft (4), an unbalanced mass pendulum (7) is arranged on the output shaft (4) inside the floater (6), and floating liquid is filled in the accelerometer shell (1).

2. An accelerometer according to claim 1, wherein: the inserting groove (103) and the inserting protrusion (104) are both square.

3. An accelerometer according to claim 1, wherein: the plug-in projection (104) is made of an elastic material.

4. An accelerometer according to claim 3, wherein: the plug-in protrusion (104) is fixedly bonded with the plane side wall of the second half shell (102).

5. An accelerometer according to claim 1, wherein: the arc-shaped groove (301) is fixedly bonded with the end face of the output shaft penetrating through the half hole (2).

6. An accelerometer according to claim 1, wherein: the vertical cross-sections of the first half shell (101) and the second half shell (102) are semicircular.