CN219265549U

CN219265549U - Combined pressure sensor

Info

Publication number: CN219265549U
Application number: CN202320686026.0U
Authority: CN
Inventors: 吴美贞
Original assignee: Shenzhen Xinjingcheng Sensor Technology Co ltd
Current assignee: Shenzhen Xinjingcheng Sensor Technology Co ltd
Priority date: 2023-03-25
Filing date: 2023-03-25
Publication date: 2023-06-27
Anticipated expiration: 2033-03-25

Abstract

The application relates to a combined pressure sensor, which comprises a pressing plate piece, an elastomer element, a bottom plate piece and a connecting piece, wherein a first end face of the elastomer element is connected with the pressing plate piece, and a second end face of the elastomer element is connected with the bottom plate piece; the connecting pieces comprise two groups, and each group of connecting pieces at least comprises three connecting pieces with non-collinear center points; one group of connecting pieces are arranged between the pressing plate piece and the elastic body element, and the other group of connecting pieces are arranged between the elastic body element and the bottom plate piece. The pressure sensor vibration measuring device has the advantages of reducing the vibration possibility of the pressure sensor and improving the measuring precision of the pressure sensor.

Description

Combined pressure sensor

Technical Field

The present application relates to the field of force sensors, and more particularly to a combination pressure sensor.

Background

Currently, force sensors are capable of converting force between devices into electrical signals for output to a computer, so force sensors are capable of enabling the force to be visually embodied in the form of data.

In the related art, the utility model patent with publication number CN212585891U discloses a strain seat type tension sensor, in which an elastic element is integrally formed with a base, the elastic element is connected with a pressing plate through an elastic element positioning hole, the bottom plate is connected with one equipment end, the pressing plate is connected with the other equipment end, and a strain gauge on the elastic element can convert a force signal between the two equipment ends into an electric signal for outputting.

For the related art in the foregoing, in combination with the specification and the drawings of the disclosure, two elastic element positioning holes are provided between the elastic element and the pressing plate, and the elastic body may shake along a direction perpendicular to a line connecting center points of the two elastic element positioning holes, so that the fixation between the elastic element and the pressing plate is not firm.

Disclosure of Invention

In order to reduce the possibility of shaking of the pressure sensor and improve the measurement accuracy of the pressure sensor, the application provides a combined pressure sensor.

The application provides a combination formula pressure sensor adopts following technical scheme:

a modular pressure sensor comprising a platen member, an elastomeric member, a base member and a connector member, wherein a first end surface of the elastomeric member is connected to the platen member and a second end surface of the elastomeric member is connected to the base member;

the connecting pieces comprise two groups, and each group of connecting pieces at least comprises three connecting pieces with non-collinear center points; one group of connecting pieces are arranged between the pressing plate piece and the elastic body element, and the other group of connecting pieces are arranged between the elastic body element and the bottom plate piece.

By adopting the technical scheme, a group of connecting pieces are arranged between the pressing piece and the elastic body element, and a group of connecting pieces are also arranged between the elastic body element and the bottom plate element; at least three connecting pieces with non-collinear central points are arranged in each group of connecting pieces, so that axial relative shaking is not easy to occur between the pressing plate piece and the elastic body element under the action of the connecting pieces, and the connecting relation between the pressing plate piece and the elastic body element is firmer; meanwhile, the elastic body element and the bottom plate piece are not easy to generate relative axial shaking, so that the connection relationship between the elastic body element and the bottom plate piece is firmer; finally, the possibility of shaking of the pressure sensor is reduced, and the measurement accuracy of the pressure sensor is improved.

Preferably, the connecting member is detachably connected to the pressing plate member, the connecting member is detachably connected to the elastomer element, and the connecting member is detachably connected to the base member.

Through adopting above-mentioned technical scheme, can dismantle between clamp plate spare and the elastomer component and be connected, also can dismantle between elastomer component and the bottom plate spare and be connected, consequently when the elastomer component installation in-process was inclined for clamp plate spare or bottom plate spare, can reinstall the elastomer component, and then this scheme can adjust the position of elastomer component at the installation in-process, further reduces pressure sensor and rocks the possibility, improves pressure sensor's measurement accuracy.

Preferably, the connecting pieces comprise threaded connecting pieces and riveting pieces, and each group of connecting pieces at least comprises two riveting pieces.

By adopting the technical scheme, the connecting effect of the riveting piece is firmer, but the connecting process of the riveting piece is more complex; the connecting process of the threaded connecting piece is more convenient, but the connecting effect of the threaded connecting piece is relatively loose. Therefore, in the scheme, the elastic body element is connected with the bottom plate piece through the combination of the riveting piece and the threaded connection piece, and meanwhile, the elastic body element is connected with the pressing plate piece through the mode, so that the connecting process is more convenient when the stability of the pressure sensor is improved.

Preferably, each set of said connectors comprises two of said rivets and two of said threaded connectors; and in the same group of connecting pieces, the connecting line of the central points of the two riveting pieces is perpendicular to the connecting line of the central points of the two threaded connecting pieces.

By adopting the technical scheme, the two threaded connecting pieces can fix the pressing plate piece and the elastic body element along one line, and meanwhile, the two riveting pieces can fix the pressing plate piece and the elastic body element along one line; when the line perpendicular to the line of two riveting piece central points of line of two threaded connection piece central points, the pressure plate piece is difficult for taking place the axial more and rocks with the elastomer element, and then this scheme has higher stability, has finally improved pressure sensor's measurement accuracy.

Preferably, in the same group of connecting pieces, a straight line where connecting lines of two central points of the riveting pieces are located is a perpendicular bisector of connecting lines of the central points of the two threaded connecting pieces, and a straight line where connecting lines of the central points of the two threaded connecting pieces are located is not a perpendicular bisector of connecting lines of the central points of the two riveting pieces.

Through adopting above-mentioned technical scheme, the connecting wire of two riveting piece central points sets up for the connecting wire eccentric of two threaded connection piece central points, and then riveting piece and threaded connection piece can play better fixed effect to clamp plate spare and elastomer element, and then further improved the stability of this scheme, finally improved pressure sensor's measurement accuracy.

Preferably, the projection of the first end face and the projection of the second end face do not overlap in the direction from the pressing plate member to the base member.

Through adopting above-mentioned technical scheme, the bottom plate spare is connected in an equipment end, and the clamp plate spare is connected in another equipment end, therefore when there is the power between two equipment ends, first terminal surface and second terminal surface homoenergetic atress, when along the clamp plate spare on the direction of bottom plate spare, when the projection of first terminal surface and the projection of second terminal surface do not overlap, elastomer element can have bigger deformation, and then this scheme can measure the power between two equipment ends more accurately.

Preferably, the elastic body element is arranged on the bottom plate member, the pressing plate member is arranged on the elastic body element, the elastic body element is arranged on the bottom plate member, one end of the elastic body element is communicated with the inner wall of the bottom plate member, and the other end of the elastic body element is communicated with the outside.

By adopting the technical scheme, the elastic body element is surrounded by the pressing plate element, the shell element and the bottom plate element, so that the elastic body element is not easy to be contaminated with impurities such as dust, the service life of the scheme is prolonged, and the measuring precision of the scheme is improved; the connection cavity can be pierced for electrical connection lines between the elastomeric element and the computer.

Preferably, the cable fixing device further comprises a cable fixing piece, the cable fixing piece protrudes along the outer side of the shell piece, and the connecting cavity penetrates through the cable fixing piece.

Through adopting above-mentioned technical scheme, the wire fixing piece can play the guide effect for the electric connecting wire between elastomer element and the computer, and then makes electric connecting wire can arrange more neatly in this scheme.

In summary, the present application includes at least one of the following beneficial technical effects:

1. a group of connecting pieces are arranged between the pressing piece and the elastic body element, and a group of connecting pieces are also arranged between the elastic body element and the bottom plate element; at least three connecting pieces with non-collinear central points are arranged in each group of connecting pieces, so that axial relative shaking is not easy to occur between the pressing plate piece and the elastic body element under the action of the connecting pieces, and the connecting relation between the pressing plate piece and the elastic body element is firmer; meanwhile, the elastic body element and the bottom plate piece are not easy to generate relative axial shaking, so that the connection relationship between the elastic body element and the bottom plate piece is firmer; finally, the scheme reduces the possibility of shaking of the pressure sensor and improves the measurement accuracy of the pressure sensor;

2. the pressure plate piece is detachably connected with the elastic body element, and the elastic body element is also detachably connected with the bottom plate piece, so that when the elastic body element is inclined relative to the pressure plate piece or the bottom plate piece in the installation process, the elastic body element can be reinstalled, and the position of the elastic body element can be adjusted in the installation process, so that the possibility of shaking of the pressure sensor is further reduced, and the measurement accuracy of the pressure sensor is improved;

3. the connecting effect of the riveting piece is firmer, but the connecting process of the riveting piece is more complex; the connecting process of the threaded connecting piece is more convenient, but the connecting effect of the threaded connecting piece is relatively loose. Therefore, in the scheme, the elastic body element is connected with the bottom plate piece through the combination of the riveting piece and the threaded connection piece, and meanwhile, the elastic body element is connected with the pressing plate piece through the mode, so that the connecting process is more convenient when the stability of the pressure sensor is improved.

Drawings

FIG. 1 is a view of a combined pressure sensor after housing parts are hidden.

Fig. 2 is an exploded view of a combination pressure sensor.

Reference numerals illustrate: 1. a platen member; 2. an elastomeric element; 21. a main body; 22. a first boss; 221. a first end face; 23. a second protruding portion; 231. a second end face; 3. a floor member; 4. a connecting piece; 5. a housing member; 51. a connecting cavity; 6. and the wire fixing piece.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses a combined pressure sensor.

Referring to fig. 1 and 2, a combined pressure sensor comprises a platen member 1, an elastomeric element 2, a base plate member 3, a connecting member 4, a housing member 5 and a wire fixing member 6; the pressing piece 1, the elastomer element 2 and the bottom plate piece 3 are sequentially and linearly arranged; the elastic body element 2 is provided with a first end surface 221 and a second end surface 231 which are arranged in parallel, the first end surface 221 is connected to the pressing plate member 1, and the second end surface 231 is connected to the bottom plate member 3 under the action of the connecting member 4. The connecting pieces 4 comprise two groups, and each group of connecting pieces 4 at least comprises three connecting pieces 4; one group of connecting pieces 4 is arranged between the first end face 221 and the pressing plate piece 1, and the other group of connecting pieces 4 is arranged between the second end face 231 and the bottom plate piece 3; the center points of all of the connectors 4 in any one set of connectors 4 are not collinear in a direction perpendicular to the first end face 221. The shell piece 5 is connected to the bottom plate piece 3, the elastic body element 2 is surrounded by the pressing piece 1, the shell piece 5 and the bottom plate piece 3, the wire fixing piece 6 is arranged along the protrusion of the outer surface of the shell piece 5, the shell piece 5 is provided with a connecting cavity 51, the connecting cavity 51 penetrates through the wire fixing piece 6, one end of the connecting cavity 51 is communicated with the inner wall of the shell piece 5, and the other end of the connecting cavity 51 is communicated with the outside.

Through the structure, under the action of the connecting piece 4, at least three connecting areas are arranged between the pressing plate piece 1 and the elastic body element 2, and the center points of the three connecting areas are not collinear, so that the pressing plate piece 1 is difficult to shake relative to the elastic body element 2, and the pressing plate piece 3 and the elastic body element 2 are also difficult to shake; and then improved the stability of this scheme, finally this scheme can have higher measurement accuracy. In addition, the connecting cavity 51 can be used for the electric connecting wire connected between the elastomer element 2 and the computer to pass through, and the wire fixing piece 6 can play a guiding role on the electric connecting wire, so that the electric connecting wire is distributed more orderly.

Referring to fig. 1 and 2, in particular, the elastomeric element 2 comprises a body 21, a first boss 22 and a second boss 23; the main body 21 is a cuboid, a strain gauge for sensing the deformation of the main body 21 is attached to the main body 21, and a through groove for increasing the deformation of the main body 21 is formed in the main body 21. The first protruding portion 22 and the second protruding portion 23 are also rectangular, one end face of the first protruding portion 22 is connected to a side wall corresponding to the length and width of the main body 21, and one end face of the second protruding portion 23 is connected to a side wall corresponding to the other length and width of the main body 21.

One side wall of the first boss 22 is connected to and coplanar with the end face of the main body 21, and one side wall of the second boss 23 is connected to and coplanar with the other end face of the main body 21. The end surface of the first protruding portion 22 away from the main body 21 is a first end surface 221, and the end surface of the second protruding portion 23 away from the main body 21 is a second end surface 231. In a direction perpendicular to the first end surface 221, the projection of the first end surface 221 does not overlap with the projection of the second end surface 231.

In the present embodiment, the connecting member 4 comprises a threaded connecting member and a rivet member, so that the elastic body member 2 is detachably connected to the pressing plate member 1, and the elastic body member 2 is also detachably connected to the bottom plate member 3; in other embodiments, the connector 4 may also be a solder or other connection structure. Each set of connectors 4 comprises two threaded connectors, in this embodiment screws, and two rivets, in other embodiments, the threaded connectors may be other threaded structures such as bolts or studs. In this embodiment the rivet is a pin.

Referring to fig. 1 and 2, each set of connectors 4 comprises two threaded connectors and two rivets; in the same group of connectors 4, in the direction perpendicular to the first end face 221, the connecting line of the center points of the two threaded connectors is parallel to the connecting line of the center points of the two riveted parts, and the connecting line of the center points of the two threaded connectors is perpendicular to the long side of the main body 21, and the distance from the center point of one threaded connector to one long side of the main body 21 is equal to the distance from the center point of the other threaded connector to the other long side of the main body 21; the distance from the center point of one rivet to one broadside of the body 21 is equal to the distance from the center point of the other rivet to the other broadside of the body 21; meanwhile, the connecting line of the center points of the two riveting pieces is positioned in a vertical bisector plane of the main body 21; the threaded connection is disposed adjacent to an end face of the body 21.

Through the structure, the connecting effect of the riveting piece is firmer, but the riveting process is more complex; threaded connection spare is convenient for dismouting more, but threaded connection spare's connection effect compares riveting spare relatively poor. Therefore, in the scheme, the mode of combining the threaded connecting piece and the riveting piece can ensure the connection stability and simultaneously make the connection process more convenient as much as possible. Therefore, the scheme can further improve the measurement accuracy while the manufacturing process is more convenient.

Referring to fig. 1 and 2, specifically, the pressing plate member 1 is in a rectangular block structure, the bottom plate member 3 is also in a rectangular block structure, the end surface area of the bottom plate member 3 is larger than the end surface area of the pressing plate member 1, and threaded holes and riveting holes are formed in the pressing plate member 1, the bottom plate member 3, the first end surface 221 and the second end surface 231, the threaded holes are used for being matched with threaded connecting members, and the riveting holes are used for being matched with the riveting members. The shell piece 5 is hollow cuboid, and the cavity of shell piece 5 communicates with the two terminal surfaces of shell piece 5, and an terminal surface of shell piece 5 is connected in bottom plate piece 3, and another terminal surface of shell piece 5 can laminate with the terminal surface of clamp plate piece 1, and clamp plate piece 1, shell piece 5 and bottom plate piece 3 surround elastomer element 2 and set up.

The outer side wall of the shell member 5 is convexly provided with a wire fixing member 6, the wire fixing member 6 is in a cylinder shape, the shell member 5 is provided with a cylindrical connecting cavity 51, the connecting cavity 51 penetrates through the wire fixing member 6, one end of the connecting cavity 51 is communicated with a space surrounded by the inner side wall of the shell member 5, and the other end of the connecting cavity 51 is communicated with the outside; the connecting cavity 51 is used for the electric connection wire on the elastic body element 2 to pass through, and the inner side wall of the wire fixing piece 6 is used for guiding the electric connection wire.

Through above-mentioned structure, the setting of elastomer element 2 is encircleed to clamp plate piece 1, shell piece 5 and bottom plate piece 3, and the foil gage on elastomer element 2 surface is difficult for being infected with debris, consequently this scheme can have longer life, and this scheme still has higher measurement accuracy simultaneously. In addition, under the action of the wire fixing piece 6, the electric connection wires penetrating through the connecting cavity 51 are more orderly.

In summary, the connecting members 4 are divided into two groups, one group of connecting members 4 is disposed between the first end surface 221 and the pressing plate member 1, and the other group of connecting members 4 is disposed between the second end surface 231 and the bottom plate member 3; every group connecting piece 4 can all play the connection through the region of a plurality of central points non-collineation, and then make elastomer element 2 be difficult for rocking for bottom plate piece 3 excessive pressure plate piece 1 takes place in this scheme, improved the stability of this scheme, finally improved the measurement accuracy of this scheme.

The implementation principle of the combined pressure sensor in the embodiment of the application is as follows: a group of connecting pieces 4 are arranged between the pressing piece 1 and the elastic body element 2, and a group of connecting pieces 4 are also arranged between the elastic body element 2 and the bottom plate element 3; at least three connecting pieces 4 with non-collinear central points are arranged in each group of connecting pieces 4, so that axial relative shaking is not easy to occur between the pressing plate piece 1 and the elastic body element 2 under the action of the connecting pieces 4, and the connection relationship between the pressing plate piece 1 and the elastic body element 2 is firmer; meanwhile, the elastic body element 2 and the bottom plate piece 3 are not easy to generate relative axial shaking, so that the connection relationship between the elastic body element 2 and the bottom plate piece 3 is firmer; finally, the possibility of shaking of the pressure sensor is reduced, and the measurement accuracy of the pressure sensor is improved.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A combination pressure sensor, characterized by: a pressing plate (1), an elastomer element (2), a bottom plate (3) and a connecting piece (4), wherein a first end surface (221) of the elastomer element (2) is connected to the pressing plate (1), and a second end surface (231) of the elastomer element (2) is connected to the bottom plate (3);

the connecting pieces (4) comprise two groups, and each group of connecting pieces (4) at least comprises three connecting pieces (4) with non-collinear central points; one group of connecting pieces (4) are arranged between the pressing plate piece (1) and the elastic body element (2), and the other group of connecting pieces (4) are arranged between the elastic body element (2) and the bottom plate piece (3).

2. A combination pressure sensor as claimed in claim 1, wherein: the connecting piece (4) can be detachably connected with the pressing plate piece (1), the connecting piece (4) can be detachably connected with the elastic body element (2), and the connecting piece (4) can be detachably connected with the bottom plate piece (3).

3. A combination pressure sensor as claimed in claim 2, wherein: the connecting pieces (4) comprise threaded connecting pieces and riveting pieces, and each group of connecting pieces (4) at least comprises two riveting pieces.

4. A combination pressure sensor according to claim 3, wherein: each group of said connecting elements (4) comprises two of said rivet elements and two of said threaded connecting elements; in the same group of connecting pieces (4), the connecting line of the central points of the two riveting pieces is perpendicular to the connecting line of the central points of the two threaded connecting pieces.

5. A combination pressure sensor as claimed in claim 4, wherein: in the same group of connecting pieces (4), the straight line of the connecting lines of the central points of the two riveting pieces is the perpendicular bisector of the connecting lines of the central points of the two threaded connecting pieces, and the straight line of the connecting lines of the central points of the two threaded connecting pieces is not the perpendicular bisector of the connecting lines of the central points of the two riveting pieces.

6. A combination pressure sensor as claimed in claim 1, wherein: the projection of the first end face (221) and the projection of the second end face (231) do not overlap in the direction of the pressure plate member (1) to the base plate member (3).

7. A combination pressure sensor as claimed in claim 1, wherein: still include shell piece (5), clamp plate piece (1) shell piece (5) with bottom plate piece (3) can encircle elastomer element (2), be equipped with on shell piece (5) and connect chamber (51), connect chamber (51) one end with shell piece (5) inner wall intercommunication, connect chamber (51) other end and external intercommunication.

8. A combination pressure sensor as in claim 7, wherein: the connecting device further comprises a wire fixing piece (6), the wire fixing piece (6) protrudes out of the outer shell piece (5), and the connecting cavity (51) penetrates through the wire fixing piece (6).