CN212963794U

CN212963794U - Pressure detection structure of automobile touch key

Info

Publication number: CN212963794U
Application number: CN202021731599.3U
Authority: CN
Inventors: 罗小林; 叶浩翔; 曹赞利
Original assignee: Yanfeng Visteon Electronic Technology Shanghai Co Ltd
Current assignee: Yanfeng Visteon Electronic Technology Shanghai Co Ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-04-13
Anticipated expiration: 2030-08-19

Abstract

The pressure detection structure of the automobile touch key comprises a base and a base, wherein the base is arranged below the base, at least two pressure sensing assemblies are arranged between the base and the base, any one of the pressure sensing assemblies respectively comprises a lower support, an upper support, a metal elastic sheet and a strain sensor, the lower support is fixedly arranged on the upper side of the base, the upper support is fixedly arranged on the lower side of the base, the top of the lower support is fixedly connected with one end of the metal elastic sheet, the top of the upper support is fixedly connected with the other end of the metal elastic sheet, and the strain sensor is arranged on the metal elastic sheet. The utility model has the advantages that: 1. the structure is simple, and the required space is small; 2. the trigger sensitivity of the strain sensor is high; 3. a group of pressure sensing components can be used for signal judgment corresponding to a plurality of keys.

Description

Pressure detection structure of automobile touch key

Technical Field

The utility model relates to an electricity field especially relates to a pressure detection structure of car touch button.

Background

In the prior art, function switching of electronic products of an automobile cabin is realized by physical keys. With the development of the automobile industry, automobile electronic products seek the integrity of a control panel more and more, entity keys are gradually reduced, and original entity keys are gradually replaced by touch keys. However, the touch key only provides a position detection function, and no pressure detection exists, so that a user can easily trigger related keys by mistake.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pressure detection structure of car touch key, this kind of pressure detection structure of car touch key solve the technical problem that touch key triggered by mistake easily among the prior art.

In order to achieve the above object, the present invention provides the following technical solutions:

the pressure detection structure of the automobile touch key comprises a base and a base, wherein the base is arranged below the base, at least two pressure sensing assemblies are arranged between the base and the base, any one of the pressure sensing assemblies respectively comprises a lower support, an upper support, a metal elastic sheet and a strain sensor, the lower support is fixedly arranged on the upper side of the base, the upper support is fixedly arranged on the lower side of the base, the top of the lower support is fixedly connected with one end of the metal elastic sheet, the top of the upper support is fixedly connected with the other end of the metal elastic sheet, and the strain sensor is arranged on the metal elastic sheet.

Furthermore, the number of the pressure sensing assemblies is two, and the pressure sensing assemblies are symmetrically distributed on the base.

Furthermore, the upper side of the base is provided with the touch control film.

Further, the controller is arranged on the lower side of the base.

Further, the strain sensor is electrically connected with the controller.

Furthermore, the touch control film is electrically connected with the controller.

Furthermore, any one of the pressure sensing assemblies further comprises a limiting frame, the limiting frame is arranged on the upper side of the base, and the limiting frame is matched with the upper support.

The utility model discloses a working process:

the user presses touch-control membrane surface, touch-control membrane atress back will produce decurrent pressure together with the base, and produce a small displacement change relative the base, upper bracket on the base promotes metal shrapnel and produces decurrent small deformation, strain sensor senses deformation and produces the signal, and give the controller with signal transmission, the controller receives behind the signal and compares the judgement with predetermined threshold value, if in the scope, then regard this button to be the intentional touch of user, for effectively triggering, the controller gives instructions carries out corresponding operation, if not in the scope, then regard this operation to be the spurious triggering, the controller does not send operating command.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the structure is simple, the required space is small, and the overall appearance of the touch key is not influenced; 2. the trigger sensitivity of the used strain sensor is high, and the stress of the touch key can be effectively judged; 3. a group of pressure sensing components can be used for signal judgment of a plurality of touch keys.

Drawings

Fig. 1 is a schematic diagram of a pressure detection structure of an automobile touch key of the present invention.

Detailed Description

Referring to fig. 1, the present invention provides a technical solution:

the utility model provides a pressure detection structure of car touch key, including a base 2 and a base 1, base 1 sets up the below at base 2, be provided with two at least forced induction subassemblies between base 2 and the base 1, arbitrary forced induction subassembly all includes a lower carriage 3 separately, an upper bracket 4, a metal shrapnel 5 and a strain sensor 6, lower carriage 3 is fixed to be set up at base 1 upside, upper bracket 4 is fixed to be set up at 2 downside of base, the top of lower carriage 3 and the one end fixed connection of metal shrapnel 5, the top of upper bracket 4 and the other end fixed connection of metal shrapnel 5, strain sensor 6 sets up on metal shrapnel 5.

Furthermore, the number of the pressure sensing assemblies is two, and the two pressure sensing assemblies are symmetrically distributed on the base 1.

Further, a touch film 7 is disposed on the upper side of the base 2.

Further, a controller 8 is provided on the lower side of the base 2.

Further, the strain sensor 6 is electrically connected to the controller 8.

Further, the touch film 7 is electrically connected to the controller 8.

Furthermore, any one pressure sensing assembly also comprises a limiting frame 9, the limiting frame 9 is arranged on the upper side of the base 1, and the limiting frame 9 is matched with the upper support 4.

Specifically, the working principle of the strain sensor is based on the resistance strain effect, that is, when the conductor is mechanically deformed (stretched or compressed) under the external action, the resistance value of the conductor changes correspondingly. The strain sensor of this embodiment sets up on the metal shrapnel, and the metal shrapnel receives the pressure of upper bracket to take place deformation, and strain sensor can gather corresponding signal and feed back to the controller, and the signal of feedback changes along with the change of pressure size, and the preset atress interval can regard this touch-control as the user and touch intentionally, but not trigger by mistake more than the threshold value. The strain sensor has high trigger sensitivity, namely is very sensitive to stress of the touch key, and can timely make effective feedback.

The working process of the embodiment:

the user presses touch-control membrane surface, touch-control membrane atress back will produce decurrent pressure together with the base, and produce a small displacement change relative the base, upper bracket on the base promotes metal shrapnel and produces decurrent small deformation, strain sensor senses deformation and produces the signal, and give the controller with signal transmission, the controller receives behind the signal and compares the judgement with predetermined threshold value, if in the scope, then regard this button to be the intentional touch of user, for effectively triggering, the controller gives instructions carries out corresponding operation, if not in the scope, then regard this operation to be the spurious triggering, the controller does not send operating command. The cooperation of the below of upper bracket is provided with spacing, prevents that the user from pressing excessively hard and leading to metal shrapnel to bend and warp.

The pressure sensing assembly can sense the stress change of the surface of the touch film in a certain area, and a plurality of touch keys can be set in the touch area, namely, one pressure sensing assembly can be used for signal judgment of the plurality of touch keys. On the other hand, the touch button has a simple structure and small occupied space, and the overall appearance of the touch button is not affected.

Claims

1. The utility model provides a pressure detection structure of car touch key, includes a base (2) and a base (1), base (1) set up the below of base (2), its characterized in that: the base (2) with base (1) between be provided with two at least forced induction subassemblies, arbitrary one forced induction subassembly all include a lower carriage (3), an upper bracket (4), a metal shrapnel (5) and one strain sensor (6) respectively, lower carriage (3) fixed the setting base (1) upside, upper bracket (4) fixed the setting base (2) downside, the top of lower carriage (3) with the one end fixed connection of metal shrapnel (5), the top of upper bracket (4) with the other end fixed connection of metal shrapnel (5), strain sensor (6) set up metal shrapnel (5) on.

2. The pressure detection structure of the touch button of the vehicle of claim 1, wherein: the number of the pressure sensing assemblies is two, and the two pressure sensing assemblies are symmetrically distributed on the base (1).

3. The pressure detection structure of the touch button of the vehicle of claim 1, wherein: the upper side of the base (2) is provided with the touch control film (7).

4. The pressure detection structure of the touch button of the vehicle of claim 3, wherein: the lower side of the base (2) is provided with a controller (8).

5. The pressure detection structure of the touch button of the vehicle as claimed in claim 4, wherein: the strain sensor (6) is electrically connected with the controller (8).

6. The pressure detection structure of the touch button of the vehicle of claim 5, wherein: the touch control film (7) is electrically connected with the controller (8).

7. The pressure detection structure of the touch button of the vehicle of claim 1, wherein: any one the pressure sensing assembly further comprises a limiting frame (9), the limiting frame (9) is arranged on the upper side of the base (1), and the limiting frame (9) is matched with the upper support (4).