CN218511878U

CN218511878U - Pressure sensor applied to vehicle

Info

Publication number: CN218511878U
Application number: CN202220784365.8U
Authority: CN
Inventors: 田忠生
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2023-02-21
Anticipated expiration: 2032-04-02

Abstract

The utility model relates to a pressure sensor applied to a vehicle, which is matched with a vehicle suspension and is arranged below the spring leaf at the lowest layer of the vehicle suspension, comprising a shell, wherein a cavity for filling liquid is arranged in the shell, and the position of the upper end surface corresponding to the cavity is provided with a stress surface which is in an arc surface structure and is attached to the lower end surface of the spring leaf at the lowest layer; the outer wall of the shell is connected with a connector communicated with the cavity, and a pressure test element is arranged in the connector; the utility model discloses mainly be applied to automotive suspension, to the crooked shape structure of spring leaf, with the stress surface design of sensor upper end for with the spring leaf under the camber type structure that the terminal surface was laminated mutually, can avoid the atress of sensor own to take place to warp, can realize the comprehensive laminating of spring leaf and stress surface again, with the accurate effect of effort on the stress surface, measurement accuracy is high, data acquisition is stable.

Description

Pressure sensor applied to vehicle

Technical Field

The utility model relates to a sensor technical field, in particular to be applied to pressure sensor of vehicle.

Background

The steel plate spring is an elastic element which is most widely applied in the automobile suspension, and is an elastic beam which is similar to the equal strength and is formed by combining a plurality of alloy spring pieces with equal width but unequal length (the thicknesses can be equal or unequal), wherein the spring pieces are fixed through a through wire and are fixed on an axle through a U-shaped wire; with the high-speed development and fine management requirements of the transportation industry, the vehicle-mounted pressure needs to be monitored in real time, so that a pressure sensor needs to be used for data acquisition, and people think that the pressure sensor is installed on a spring leaf suspension; pressure sensor among the prior art, its structure itself has good performance, nevertheless installs after on automotive suspension, based on the bending characteristic of spring leaf, very easily takes place to warp after long-time the use, and then leads to data acquisition unstable, and the condition that the error is big brings certain obstacle for transportation work, consequently the utility model discloses developed a pressure sensor who is applied to the vehicle to solve the problem that exists among the prior art, through the retrieval, not discover with the utility model discloses same or similar technical scheme.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is: the utility model provides a be applied to pressure sensor of vehicle to solve among the prior art sensor and easily take place to warp and lead to data acquisition unstable, the problem that the error is big.

The technical scheme of the utility model is that: the utility model provides a be applied to pressure sensor of vehicle, with vehicle suspension adaptation to install in vehicle suspension undermost layer spring leaf below, including the casing, have the cavity that is used for filling liquid in the casing, the outer wall connection has the connector with the cavity intercommunication, the built-in pressure test component of connector, its innovation point lies in: the upper end face of the shell is provided with a stress surface at a position corresponding to the cavity, and the stress surface is of an arc surface structure and is attached to the lower end face of the spring piece at the lowest layer.

Preferably, the housing comprises a base member and a seal member, the chamber being open in the base member; the sealing element sealing cover is arranged above the cavity, a boss is arranged at the upper end of the sealing element sealing cover, and the upper end face of the boss is a stress surface.

Preferably, the top corners of the periphery of the base member are provided with mounting holes which are arranged in a penetrating mode, and the middle of the base member is provided with a central hole which is arranged in a penetrating mode.

Preferably, the number of the chambers is two, the two chambers are communicated through a through cavity and are respectively arranged on two sides of the central hole; the two sealing pieces are also symmetrically arranged and are respectively covered above the two cavities; each stress surface is of an inwards concave cambered surface structure, and the height of one side, which is deviated to the middle part of the basic member, is lower than the height of one side, which is far away from the middle part of the basic member.

Preferably, the chambers are arranged in a whole, the middle part of each chamber is provided with a supporting table and a positioning table which are arranged in a protruding mode, and the central hole penetrates through the positioning table; one sealing element is arranged and covers the upper part of the cavity, and the middle part of the sealing element is supported on the supporting table and is in interference fit with the outer wall of the positioning table; the stress surface is of an inward concave cambered surface structure, and the height of the middle part is lower than that of the two ends.

Preferably, an oil filling hole and a vacuum hole which are communicated with the cavity are formed in the outer wall of the base component, liquid filled in the cavity through the oil filling hole is silicone oil, and after the cavity is filled with the silicone oil, the oil filling hole and the vacuum hole are sealed through a plunger and a sealing ring.

Compared with the prior art, the utility model has the advantages that:

(1) The utility model discloses mainly be applied to automotive suspension, to the crooked shape structure of spring leaf, with the stress surface design of sensor upper end for with the spring leaf under the camber type structure that the terminal surface was laminated mutually, can avoid the atress of sensor own to take place to warp, can realize the comprehensive laminating of spring leaf and stress surface again, with the accurate effect of effort on the stress surface, measurement accuracy is high, data acquisition is stable.

(2) The design of cavity and sealing member is various, and the sealing member both can set up in pairs, also can set up one alone, satisfies under the reasonable condition of structural installation, guarantee all the time that the stress surface of upper end can with the spring leaf under the terminal surface laminate mutually can, performance optimum this moment.

Drawings

The invention will be further described with reference to the following drawings and examples:

fig. 1 is a schematic structural diagram of a pressure sensor applied to a vehicle according to embodiment 1 of the present invention;

fig. 2 is a front view of a pressure sensor applied to a vehicle according to embodiment 1 of the present invention;

fig. 3 is a plan view of a base member according to embodiment 1 of the present invention;

fig. 4 is a front view of a pressure sensor applied to a vehicle according to embodiment 1 of the present invention mounted on a suspension of the vehicle;

fig. 5 is a front view of a pressure sensor and a plurality of spring strips according to embodiment 1 of the present invention;

fig. 6 is a schematic structural diagram of a pressure sensor applied to a vehicle according to embodiment 2 of the present invention;

fig. 7 is an exploded view of a pressure sensor applied to a vehicle according to embodiment 2 of the present invention.

Wherein: 01. the device comprises a shell, 1, a base component, 2, a sealing element, 3, a chamber, 4, a boss, 5, a stress surface, 6, a through cavity, 7, a connector, 8, a mounting hole, 9, a central hole, 10, an oil injection hole, 11, a vacuum hole, 12, a spring piece, 13, an axle, 14, a core penetrating wire, 15, a U-shaped wire, 16, a supporting platform, 17 and a positioning platform.

Detailed Description

The following detailed description is made for the contents of the present invention with reference to the specific embodiments:

example 1

As shown in figure 1, the pressure sensor applied to the vehicle is matched with a vehicle suspension and is installed below a spring leaf 12 at the lowest layer of the vehicle suspension, the pressure sensor comprises a shell 01, a chamber 3 used for filling liquid is arranged in the shell 01, a connector 7 communicated with the chamber 3 is connected to the outer wall of the shell, and a pressure testing element is arranged in the connector 7.

Referring to fig. 2 and 3, a stress surface 5 is provided at a position corresponding to the chamber 3 on the upper end surface of the housing 01, and the stress surface 5 is in an arc-shaped structure and is attached to the lower end surface of the spring leaf 12 at the lowest layer; specifically, the shell 01 comprises a base component 1 and a sealing element 2, wherein mounting holes 8 which are arranged in a penetrating manner are formed in the vertex angles of the periphery of the base component 1, a central hole 9 which is arranged in a penetrating manner is formed in the middle of the base component 1, and the chamber 3 is arranged in the base component 1; the sealing cover of the sealing element 2 is arranged above the cavity 3, in order to ensure sealing, an interference fit mode is generally adopted, a boss 4 is arranged at the upper end of the sealing element 2, and the upper end surface of the boss 4 is a stress surface 5.

An oil injection hole 10 and a vacuum hole 11 which are communicated with the cavity 3 are formed in the outer wall of the base component 1, liquid filled in the cavity 3 through the oil injection hole 10 is silicon oil, and after the cavity 3 is filled with the silicon oil, the oil injection hole 10 and the vacuum hole 11 are sealed through a plunger and a sealing ring.

In this embodiment, two chambers 3 are provided, which are communicated with each other through a through chamber 6 and are respectively provided at two sides of the central hole 9, and the connector 7 is communicated with the two chambers 3 through the through chamber 6; two sealing elements 2 are also symmetrically arranged and are respectively covered above the two chambers 3; every stress surface 5 all is indent cambered surface type structure, and highly being less than the height of keeping away from 1 middle part one side of basic member 1 of the height of 1 middle part one side of basic member of erroneous tendency for guarantee can laminate with spring leaf 12, concrete mounting means as follows:

as shown in fig. 4 and 5, the leaf spring is an elastic element most widely used in automobile suspensions, and is an elastic beam with approximately equal strength formed by combining a plurality of alloy spring leaves with equal width but unequal length (the thickness may be equal or unequal), and a plurality of spring leaves 12 are fixed by a core wire 14 and fixed on an axle 13 by a U-shaped wire 15; in this embodiment, mounting hole 8 on the base member 1 supplies U type silk 15 to run through, and centre bore 9 supplies the lower extreme of wire 14 to hold, and pressure sensor installs between lower floor spring leaf 12 and axle 13, because spring leaf 12 is the camber line structure, consequently with stress surface 5 design for can with the cambered surface type structure of spring leaf 12 laminating, realize the comprehensive laminating of spring leaf 12 and stress surface 5, with the accurate effect on stress surface 5 of effort, measurement accuracy is high, data acquisition is stable.

Example 2

The present example is different from example 1 in that: as shown in fig. 6 and 7, the chambers 3 are arranged one by one, the middle part is provided with a support platform 16 and a positioning platform 17 which are arranged in a protruding way, and the central hole 9 penetrates through the positioning platform 17; one sealing element 2 is also arranged and is sealed and arranged above the cavity 3 in an interference connection mode, and the middle part of the sealing element is supported on the supporting table 16 and is in interference fit with the outer wall of the positioning table 17; the stress surface 5 is of an inward concave cambered surface structure, and the middle part of the stress surface is lower than the two ends of the stress surface so as to ensure that the stress surface can be attached to the spring piece 12.

Therefore, the design of the chamber 3 and the sealing element 2 is not single, and the stress surface 5 at the upper end can be always attached to the lower end surface of the spring piece 12 under the condition of reasonable structural installation.

By combining the two embodiments, the utility model can be applied by combining with a data acquisition system and a signal processing system, thereby realizing the matching of the acquired data and the vehicle-mounted weight, realizing the dynamic monitoring of the vehicle-mounted weight, and preventing the phenomena of cargo theft, loss, falling, overload, unbalance loading and the like; the device is combined with a positioning system, the carrying capacity in any positioning scene in the process of passing is recorded, if the phenomena of theft, loss and falling are not found in time, the position of the lost goods can be known through the positioning system, and the application is extremely strong; secondly, the condition of overload or insufficient loading can be avoided by quickly acquiring the vehicle-mounted weight, and timely unloading or replenishment can be realized; furthermore, the unbalance loading phenomenon is monitored in a static state of the vehicle, so that the influence on the road is prevented.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that the present invention be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A pressure sensor applied to a vehicle, is matched with a vehicle suspension and is installed below the spring leaf at the lowest layer of the vehicle suspension, and comprises a shell, wherein a cavity for filling liquid is formed in the shell, a connector communicated with the cavity is connected to the outer wall of the shell, a pressure testing element is arranged in the connector, and the pressure sensor is characterized in that: the upper end face of the shell is provided with a stress surface at a position corresponding to the cavity, and the stress surface is of an arc surface structure and is attached to the lower end face of the spring piece at the lowest layer.

2. A pressure sensor for a vehicle according to claim 1, wherein: the shell comprises a base component and a sealing element, and the cavity is arranged in the base component; the sealing part sealing cover is arranged above the cavity, a boss is arranged at the upper end of the sealing part sealing cover, and the upper end face of the boss is a stress surface.

3. A pressure sensor for a vehicle according to claim 2, wherein: the base component is provided with mounting holes at the peripheral top corners, and a central hole in the middle.

4. A pressure sensor applied to a vehicle according to claim 3, wherein: the two cavities are communicated through a through cavity and are respectively arranged at two sides of the central hole; the two sealing pieces are also symmetrically arranged and are respectively covered above the two cavities; each stress surface is of an inwards concave cambered surface structure, and the height of one side, which is deviated to the middle part of the basic member, is lower than the height of one side, which is far away from the middle part of the basic member.

5. A pressure sensor applied to a vehicle according to claim 3, wherein: the cavity is provided with one cavity, the middle part of the cavity is provided with a supporting table and a positioning table which are arranged in a protruding mode, and the central hole penetrates through the positioning table; one sealing element is arranged and covers the upper part of the cavity, and the middle part of the sealing element is supported on the supporting table and is in interference fit with the outer wall of the positioning table; the stress surface is of an inward concave cambered surface structure, and the height of the middle part is lower than that of the two ends.

6. A pressure sensor for vehicle application according to claim 4 or 5, wherein: the outer wall of the basic component is provided with an oil filling hole and a vacuum hole which are communicated with the cavity, liquid filled in the cavity through the oil filling hole is silicon oil, and after the cavity is filled with the silicon oil, the oil filling hole and the vacuum hole are sealed through a plunger and a sealing ring.