CN214066387U

CN214066387U - Pressure sensor

Info

Publication number: CN214066387U
Application number: CN202120317985.6U
Authority: CN
Inventors: 王明秋; 孙承业; 刘青玉
Original assignee: Xipan Beijing Information Technology Co ltd
Current assignee: Wang Mingqiu
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-08-27
Anticipated expiration: 2031-02-04

Abstract

The utility model relates to a pressure sensor, include the elasticity midbody of being made by high resistance value conductive rubber and laminate respectively and fix the electrode slice in both sides about the midbody, each the equal connecting wire of electrode slice, the elasticity midbody includes the columnar body at middle part and an organic whole locate the variable elastic layer on columnar body upper surface and/or the lower surface, and variable elastic layer is the array form big-end-up's protruding structure or cross section be netted grid structure. The utility model discloses a pressure sensor, because the shape of variable elastic layer is netted lattice structure for big-end-up's protruding structure or cross section, receive external force after, deformation space and deformation amplitude are all bigger, the resistance value that leads to the elasticity midbody that corresponds under the different external force changes also bigger, it is sensitive and accurate to measure more, because the elasticity midbody has certain volume and specific shape, the processing uniformity is high, it is also negligible to receive the influence of external factor in the transportation laying process, the emergence of drift phenomenon has been avoided.

Description

Pressure sensor

Technical Field

The utility model relates to a health detection field especially relates to a pressure sensor.

Background

With the pursuit of people for quality of life being higher and higher, in order to guarantee the health, the customized shoes which are customized according to the shapes of the soles are more and more popular. In the prior art, a thin film pressure sensor is adhered to a measuring area on the inner surface of a sole, so that in the practical use, even if the thin film sensors in the same batch are used, the discreteness of the data obtained under the same measuring condition is larger, and in the multiple measurements of the same thin film pressure sensor under the same measuring condition, the error is larger, the measuring result is difficult to reflect the real situation, and the larger error often makes the customized shoe made according to the method difficult to achieve the ideal effect.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a pressure sensor still provides pressure distribution and detects shoes.

The utility model discloses a pressure sensor's technical scheme is:

a pressure sensor comprises an elastic intermediate body made of high-resistance conductive rubber and electrode plates which are respectively attached and fixed on the upper side and the lower side of the intermediate body, wherein each electrode plate is connected with a lead, the elastic intermediate body comprises a cylindrical body in the middle and a variable elastic layer integrally arranged on the upper surface and/or the lower surface of the cylindrical body, and the variable elastic layer is of an array-shaped bulge structure with a small upper part and a large lower part or a grid structure with a reticular cross section.

Preferably, the convex structures are arrayed cones, hemispheroids or platforms which are uniformly distributed on the upper surface and/or the lower surface.

Preferably, the width of the elastic intermediate is 0.5cm to 2cm, the vertical length is 1mm to 4mm, and the vertical length of the columnar body is twice the thickness of the single variable elastic layer.

Preferably, the electrode plate is a nickel plate.

Preferably, the electrode plates are fixedly attached to the upper side and the lower side of the elastic intermediate body through conductive adhesives.

Preferably, an adhesive layer is arranged on the lower surface of the electrode plate of the lower layer.

Preferably, plastic films are pasted on the upper surface of the electrode plate on the upper layer and the lower surface of the electrode plate on the lower layer, the circumferential edges of the two plastic films are bonded together to realize the fitting and fixing of the electrode plate on the upper side and the lower side of the elastic intermediate body, and the lower surface of the plastic film on the lower layer is provided with a bonding layer.

Preferably, the connection part of the electrode plate and the lead on the upper layer and the connection part of the electrode plate and the lead on the lower layer are staggered in the vertical direction.

The utility model discloses a pressure sensor, when using, can place pressure sensor in the tube-shape mount pad in the shoes or paste in the sole, after the foot is stepped on, variable elastic layer receives extrusion deformation, because the shape of variable elastic layer is big end down's protruding structure or cross section is netted grid structure, after receiving external force, deformation space and deformation range are bigger, the change of electrode slice and variable elastic layer's area of contact is also bigger, the resistance value of the corresponding elasticity midbody under different external force changes bigger, it is more sensitive and accurate to measure, compare with acupuncture formula simultaneously, because need not to pierce the elasticity midbody and destroy its structure, life is also much higher, because the elasticity midbody has certain volume and specific shape, the processing uniformity is high, it is also negligible to receive the influence of external factor in the transportation and lay, avoided the emergence of drift phenomenon, the utility model discloses a pressure sensor passes through after experimental actually demarcating pressure and resistance, can batch production and use, and the structure is very simple.

Furthermore, the electrode plate is made of a nickel plate which is hard, so that the stress consistency during pressing is ensured.

Furthermore, an adhesive layer is arranged on the lower surface of the electrode plate of the lower layer and can be adhered to the measuring surface.

Furthermore, plastic films are pasted on the upper surface of the electrode plate on the upper layer and the lower surface of the electrode plate on the lower layer, the circumferential edges of the two plastic films are bonded together to realize that the electrode plate is fixed in a laminating mode on the upper side and the lower side of the elastic intermediate body, and the lower surface of the plastic film on the lower layer is provided with a bonding layer.

Furthermore, the connecting portion of the electrode plate and the lead on the upper layer and the connecting portion of the electrode plate and the lead on the lower layer are arranged in a staggered mode in the vertical direction, and short circuit is prevented when the elastic intermediate is thin.

Drawings

Fig. 1 is a schematic structural diagram of a pressure sensor according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the structure of the elastomeric intermediate of FIG. 1;

FIG. 3 is a schematic top view of the structure of FIG. 2;

fig. 4 is another schematic structural diagram of the pressure sensor according to the embodiment of the present invention;

fig. 5 is a schematic top view of the elastomeric intermediate of fig. 4.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Example 1

A pressure sensor, as shown in FIGS. 1-3, comprises an elastic intermediate body made of high-resistance conductive rubber and

electrode plates

4, 5 respectively attached and fixed on the upper and lower sides of the intermediate body, the high-resistance conductive rubber is generally made of doped graphite or nanoscale conductive metal under certain conditions, the resistance of the conductive rubber is controlled by controlling the doping degree and other parameters, the manufacturing of the high-resistance conductive rubber is the prior art, and will not be described herein, in this embodiment, the high-resistance conductive rubber refers to a conductive rubber material corresponding to the elastic intermediate body with a resistance of 20M omega in a natural state, the electrode plates can be nickel plates or copper plates, etc., the embodiment adopts nickel plates which are hard and ensure the stress consistency when pressing down, each electrode plate is connected with a

lead

6, 7, the connection part of the upper electrode plate 4 and the lead 7 and the connection part of the lower electrode plate 5 and the lead 6 are staggered in a vertical direction, the elastic intermediate body comprises a columnar body 1 in the middle and variable

elastic layers

2 and 3 integrally arranged on the upper surface and the lower surface of the columnar body, the variable elastic layers are in an array-shaped convex structure with a small upper part and a large lower part or in a grid structure with a net-shaped cross section, as shown in fig. 3, the grid structure with the net-shaped cross section is adopted in the embodiment.

The width of the elastic intermediate is 0.5 cm-2 cm, and the vertical length is 1 mm-4 mm, in this embodiment, the width of the elastic intermediate is 1cm, and the vertical length is 1mm, wherein the vertical length of the cylindrical body 1 is twice the thickness of the single variable elastic layer, the cylindrical body is a cylinder in this embodiment, and the variable elastic layer is circular. Plastic films 8 and 9 are adhered to the upper surface of the electrode plate on the upper layer and the lower surface of the electrode plate on the lower layer, the circumferential edges of the two plastic films are adhered together to realize the adhesion and fixation of the electrode plate on the upper side and the lower side of the elastic intermediate body, and the lower surface of the plastic film on the lower layer is provided with an adhesive layer. (not shown) for attachment to a measuring surface. The pressure sensor of the present embodiment has a resistance value variation range of 20M Ω to 200K Ω when pressed.

Example 2

Unlike the previous embodiments, as shown in fig. 4-5, the protruding structures are array-

shaped cones

10, 11 uniformly distributed on the upper and lower surfaces, and the cones may be cones or pyramids, in this embodiment, cones 12; the electrode plates are fixedly attached to the upper side and the lower side of the elastic intermediate body through conductive adhesives, and the lower surface of the electrode plate on the lower layer is provided with an adhesive layer (not shown in the figure) which can be used for being attached to a measuring surface.

In other embodiments, different from the above embodiments, the variable elastic layer may be disposed on only one surface of the columnar body as needed, the convex structure may be a hemisphere or a truncated cone, and the truncated cone may be a circular truncated cone or a truncated pyramid.

It should be noted that, for those skilled in the art, without departing from the technical principle of the present invention, several modifications and substitutions can be made, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A pressure sensor, characterized by: the elastic intermediate body comprises a cylindrical body in the middle and a variable elastic layer integrally arranged on the upper surface and/or the lower surface of the cylindrical body, wherein the variable elastic layer is in an array-shaped bulge structure with a small upper part and a large lower part or is in a grid structure with a reticular cross section.

2. A pressure sensor as claimed in claim 1, wherein: the convex structures are arrayed cones, hemispheroids or platforms which are uniformly distributed on the upper surface and/or the lower surface.

3. A pressure sensor as claimed in claim 2, wherein: the width of the elastic intermediate is 0.5 cm-2 cm, the vertical length of the elastic intermediate is 1 mm-4 mm, and the vertical length of the columnar body is twice of the thickness of a single variable elastic layer.

4. A pressure sensor as claimed in claim 3, wherein: the electrode plate is a nickel plate.

5. A pressure sensor according to any one of claims 1 to 4, wherein: the electrode plates are fixedly attached to the upper side and the lower side of the elastic intermediate body through conductive adhesives.

6. A pressure sensor as claimed in claim 5, wherein: and the lower surface of the electrode plate of the lower layer is provided with an adhesive layer.

7. A pressure sensor according to any one of claims 1 to 4, wherein: plastic films are pasted on the upper surface of the electrode plate on the upper layer and the lower surface of the electrode plate on the lower layer, the circumferential edges of the two plastic films are bonded together to realize the fitting and fixing of the electrode plate on the upper side and the lower side of the elastic intermediate, and the lower surface of the plastic film on the lower layer is provided with a bonding layer.

8. A pressure sensor according to any one of claims 1 to 4, wherein: the connecting parts of the electrode plates and the wires on the upper layer and the connecting parts of the electrode plates and the wires on the lower layer are arranged in a staggered mode in the vertical direction.