CN217307661U

CN217307661U - Pressure sensing switch with flexible distributed matrix electrodes

Info

Publication number: CN217307661U
Application number: CN202123445174.3U
Authority: CN
Inventors: 刘燕; 杨明; 卫超; 黄法深; 朱宏
Original assignee: Genad Intelligent Control Technology Shanghai Co Ltd
Current assignee: Genad Intelligent Control Technology Shanghai Co Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-08-26
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses a pressure-sensitive switch with flexible distributed matrix electrodes, which comprises a lower flexible circuit layer, an upper flexible circuit layer, an insulating layer and an elastic composite material layer; a bottom glue layer is arranged on the lower surface of the lower flexible circuit layer; the upper surface of the lower flexible circuit layer is uniformly distributed with lower electrodes; electrodes are uniformly distributed on the lower surface of the upper flexible circuit layer; the upper surface of the upper flexible circuit layer is fixedly connected with the lower surface of the elastic composite material layer through a first bonding layer; the lower flexible circuit layer and the upper flexible circuit layer are distributed in a transverse and longitudinal rectangular shape; the lower flexible circuit layer is fixedly connected with the upper flexible circuit layer through a second bonding layer; the lower electrode and the upper electrode are in one-to-one correspondence; the insulating layer is disposed on the upper surface of the lower flex circuit layer in a region where the non-electrode lower and electrode upper contacts. The technical scheme adopts the design of the flexible distributed matrix electrodes, expands the application occasions, and can be widely used for the surface mounting of software such as large-scale medical equipment, automobile seats, sickbeds, wearable equipment and the like which need a larger pressure sensing range.

Description

Pressure sensing switch with flexible distributed matrix electrodes

Technical Field

The utility model relates to a forced induction switch field specifically is a flexible distributed matrix electrode forced induction switch.

Background

The pressure sensing switch is a device or apparatus capable of sensing pressure signals and converting the pressure signals into usable output electrical signals according to a certain rule, and is widely applied to software surfaces of large-scale medical equipment, automobile seats, hospital beds, wearable equipment and the like.

However, the common pressure sensing switches in the market are single electrode switches, can only be applied to a small-range pressure sensing occasion, and have large limitations.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects existing in the prior art, the utility model provides a flexible distributed matrix electrode pressure sensing switch.

In order to achieve the above object, the utility model provides an adopted technical scheme as follows: a pressure sensing switch with flexible distributed matrix electrodes comprises a lower flexible circuit layer, an upper flexible circuit layer, an insulating layer and an elastic composite material layer; a bottom glue layer is arranged on the lower surface of the lower flexible circuit layer; the upper surface of the lower flexible circuit layer is uniformly distributed with lower electrodes; electrodes are uniformly distributed on the lower surface of the upper flexible circuit layer; the upper surface of the upper flexible circuit layer is fixedly connected with the lower surface of the elastic composite material layer through a first bonding layer; the lower flexible circuit layer and the upper flexible circuit layer are distributed in a transverse and longitudinal rectangular shape; the lower flexible circuit layer is fixedly connected with the upper flexible circuit layer through a second bonding layer; the lower electrode and the upper electrode are in one-to-one correspondence; the insulating layer is disposed on the upper surface of the lower flex circuit layer in a region where the non-electrode lower and electrode upper contacts.

Compared with the prior art, the technical scheme has the advantages that the electrode is arranged on the lower flexible circuit layer and the upper flexible circuit layer, the distributed matrix electrode design is adopted, the application occasions are expanded, and the pressure sensing device can be widely applied to surface installation of software such as large-scale medical equipment, automobile seats, sickbeds and wearable equipment which need large pressure sensing ranges. All the components are made of flexible materials, so that the device is not only suitable for regular and plane occasions, but also suitable for irregular and curved scenes, and the application scenes are expanded. The further improvement is that the bottom glue layer is double-sided adhesive tape or glue without base material. By adopting the design, the pressure sensing switch can be ensured to have enough flexibility.

In a further improvement, the lower flexible circuit layer and the upper flexible circuit layer are both made of flexible and high-performance conductive PET base materials. The flexible high-performance conductive materials form a transverse matrix and a longitudinal matrix, the size of the product is not limited, and the sensing range of the pressure is enlarged.

In a further improvement, the first bonding layer and the second bonding layer are both double-sided adhesive without base materials. The thickness of the product is reduced while the fixing effect is ensured.

In a further improvement, the elastic composite material layer is a silicon-based or PU composite material. The pressure required by the conduction of the pressure sensing switch can be adjusted and controlled through the hardness of the pressure sensing switch, and the material is soft and is suitable for occasions requiring soft and comfortable feeling.

Drawings

Fig. 1 is a schematic diagram of a layered structure of a pressure sensitive switch with flexible distributed matrix electrodes.

Fig. 2 is a schematic diagram of a distributed matrix with flexible distributed matrix electrode pressure sensitive switches.

Wherein: 1. a lower flex circuit layer; 2. an upper flex circuit layer; 3. an insulating layer; 4. a layer of elastic composite material; 5. a primer layer; 6. under the electrode; 7. on the electrode; 8. a first bonding layer; 9. and a second adhesive layer.

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.

In the description of the present invention, it should be noted that the terms "horizontal and vertical", "rectangular", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to be referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is further to be noted that, unless otherwise explicitly specified or limited, the terms "disposed", "distributed" and "adhesively secured" are to be understood in a broad sense, e.g. as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 and fig. 2, the utility model provides a technical solution: a pressure induction switch with flexible distributed matrix electrodes comprises a lower flexible circuit layer 1, an upper flexible circuit layer 2, an insulating layer 3 and an elastic composite material layer 4; the lower flexible circuit layer and the upper flexible circuit layer are both made of flexible and high-performance conductive PET base materials. The lower surface of the lower flexible circuit layer is provided with a bottom glue layer 5; the elastic composite material layer is silicon-based or PU composite material. The bottom glue layer is double-sided adhesive tape or glue without base material. The first bonding layer and the second bonding layer are both double-sided adhesive without base materials.

The upper surface of the lower flexible circuit layer is uniformly distributed with lower electrodes 6; the lower surface of the upper flexible circuit layer is uniformly distributed with electrodes 7; the upper surface of the upper flexible circuit layer is fixedly connected with the lower surface of the elastic composite material layer through a first bonding layer 8; the lower flexible circuit layer and the upper flexible circuit layer are distributed in a transverse and longitudinal rectangular shape; the lower flexible circuit layer is fixedly connected with the upper flexible circuit layer through a second bonding layer 9; the lower electrode and the upper electrode are in one-to-one correspondence; the insulating layer is disposed on the upper surface of the lower flex circuit layer in a region where the non-electrode lower and electrode upper contacts.

Wherein the bottom adhesive layer is an installed bottom adhesive tape, and a flexible non-substrate double-sided adhesive tape or glue is selected as the material; the lower flexible circuit layer is a flexible circuit of a flexible PET substrate and plays a role in bearing the conducting electrode; the lower part of the electrode is made of a high-performance conductive material, and a lower conducting electrode matrix is formed on the flexible circuit substrate through screen printing and plays a role in conducting; the insulating layer is made of high-performance insulating materials and is arranged on the lower flexible circuit substrate through screen printing to play a role in isolating contact between the lower electrode and the upper electrode; the second bonding layer is made of flexible double-sided adhesive without base materials and plays a role in bonding the upper flexible circuit and the lower flexible circuit; the electrode is made of high-performance conductive material, and a conducting electrode upper matrix is formed on the flexible circuit substrate through screen printing to play a role in conducting; the upper flexible circuit layer is a flexible circuit of a flexible PET (polyethylene terephthalate) base material and plays a role in bearing an upper conducting electrode; the first bonding layer is made of a flexible double-sided adhesive without a base material, and plays a role in bonding the flexible distributed matrix pressure switch and the upper elastic composite material; the elastic composite material layer is made of flexible silicon-based or PU composite material, and plays a role in adjusting and controlling the pressure required by the conduction of the switch through the hardness.

The working principle is as follows: under the initial elastic composite material layer non-pressure state, the upper electrode of the distributed matrix on the upper flexible circuit layer and the lower electrode of the lower flexible circuit layer are separated from each other due to the partition of the insulating layer, and the switch is in a disconnected state. When the pressure applied to the elastic composite material layer by the outside is greater than the trigger pressure, the pressure can be conducted downwards, so that the upper electrode of the distributed matrix on the upper flexible circuit layer and the lower electrode of the distributed matrix on the lower flexible circuit layer are contacted with each other to form an upper electrode conduction loop and a lower electrode conduction loop, and the switch is in a conduction state.

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. A pressure sensitive switch having a flexible distributed matrix electrode, comprising: comprises a lower flexible circuit layer (1), an upper flexible circuit layer (2), an insulating layer (3) and an elastic composite material layer (4); a bottom glue layer (5) is arranged on the lower surface of the lower flexible circuit layer; the upper surface of the lower flexible circuit layer is uniformly distributed with lower electrodes (6); electrodes (7) are uniformly distributed on the lower surface of the upper flexible circuit layer; the upper surface of the upper flexible circuit layer is fixedly connected with the lower surface of the elastic composite material layer through a first bonding layer (8); the lower flexible circuit layer and the upper flexible circuit layer are distributed in a transverse and longitudinal rectangular shape; the lower flexible circuit layer is fixedly connected with the upper flexible circuit layer through a second bonding layer (9); the lower electrode and the upper electrode are in one-to-one correspondence; the insulating layer is disposed on the upper surface of the lower flex circuit layer in a region where the non-electrode lower and electrode upper contacts.

2. The pressure sensitive switch with flexible distributed matrix electrodes of claim 1, wherein: the bottom glue layer is double-sided adhesive tape or glue without base material.

3. The pressure-sensitive switch with flexible distributed matrix electrodes of claim 1, wherein: the lower flexible circuit layer and the upper flexible circuit layer are both made of flexible and high-performance conductive PET base materials.

4. The pressure-sensitive switch with flexible distributed matrix electrodes of claim 1, wherein: the first bonding layer and the second bonding layer are both double-sided adhesive without base materials.

5. The pressure-sensitive switch with flexible distributed matrix electrodes of claim 1, wherein: the elastic composite material layer is silicon-based or PU composite material.