CN211529136U

CN211529136U - Touch device

Info

Publication number: CN211529136U
Application number: CN202020246916.6U
Authority: CN
Inventors: 不公告发明人
Original assignee: Beijing Taifang Technology Co ltd
Current assignee: Beijing Taifang Technology Co ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-09-18
Anticipated expiration: 2030-03-03

Abstract

The utility model provides a touch device, including touch-control board, a supporting beam and sensor module, a supporting beam has a plurality of first bulges that extend to the outside, first bulge is the cantilever form, be equipped with first supporting pad on the first bulge, the touch-control board is fixed on the first supporting pad, the sensor module is installed on a supporting beam. The utility model provides a touch device can realize the detection of touch-control dynamics size, and simple structure, and application scope is wide.

Description

Touch device

Technical Field

The utility model relates to a touch-control field, more specifically relates to a touch device.

Background

In the field of consumer electronics products with notebook computers as main bodies, a touch panel with force feedback has become a current popular research and development trend due to stable touch, rich functions and adjustable force. Different from simple mechanical touch, the touch scheme with force feedback can accurately sense the input force of a user and give timely feedback vibration, and the intelligent level of man-machine interaction is improved.

The core component in the touch control scheme with force feedback is a set of mechanical structure and sensor module capable of accurately measuring force, and additionally comprises functional components with three functions of bearing, limiting and deforming. The present application proposes a new executable solution for these functions.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the embodiment of the utility model provides a touch device, its detection that can realize the touch-control dynamics, and simple structure, application scope is wide.

In order to achieve the purpose of the utility model, the utility model discloses the technical scheme who takes as follows:

an embodiment of the utility model provides a touch device, including touch-control board, a supporting beam and sensor module, a supporting beam has a plurality of first bulges that extend to the outside, first bulge is the cantilever form, be equipped with first supporting pad on the first bulge, the touch-control board is fixed on the first supporting pad, the sensor module is installed it is last to prop up supporting beam.

In the touch device provided by the embodiment of the utility model, the touch pad can deform when being pressed; the supporting beam is used for supporting the touch pad and providing a deformation space for the touch pad. Specifically, a supporting beam has the first bulge of the cantilever form that extends to the outside, and the touch-control board passes through first supporting pad fixed stay on first bulge to when the touch-control board receives the pressing force, the touch-control board moves down with first bulge together, and then drives a supporting beam and takes place deformation displacement. The sensor module is arranged on the supporting beam and used for detecting the deformation displacement of the supporting beam so as to generate an electric signal, and the electric signal can be transmitted to the control chip.

In the touch device of the embodiment, the first protruding part in the cantilever form is easy to deform, which is beneficial to accurately measuring the deformation of the touch pad; and the stress analysis of the cantilever is simple, and the information such as the magnitude and the position of the pressing force on the touch pad can be easily obtained.

Other features and advantages of the present invention will be set forth in the description that follows.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention.

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

FIG. 2 is another schematic structural diagram of the touch device shown in FIG. 1;

fig. 3 is a schematic structural diagram of a touch device according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a support beam of a touch device according to another embodiment of the present invention.

Reference numerals:

10-a housing; 20-a touch pad; 30-a second beam; 31-a second projection; 32-a support floor; 33-avoidance groove; 40-a first beam; 41-a first support pad; 42-a first connector; 43-a first projection; 50-a sensor; 60-a second support pad.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the present embodiment provides a touch device, which includes a touch pad 20, a supporting beam and a sensor module, wherein the supporting beam has a plurality of first protruding portions 43 extending outward, the first protruding portions 43 are in a cantilever form, first supporting pads 41 are disposed on the first protruding portions 43, the touch pad 20 is fixed on the first supporting pads 41, and the sensor module is mounted on the supporting beam.

In the touch device, the touch pad 20 deforms when pressed; the support beam is used to support the touch pad 20 and provide a deformation space for the touch pad 20. Specifically, the support beam has a first projecting portion 43 extending outward, and the first projecting portion 43 is in the form of a cantilever having a fixed end and a free end. The touch pad 20 is fixedly supported on the first protrusion 43 through the first supporting pad 41, so that when the touch pad 20 is pressed, the touch pad 20 and the first protrusion 43 move downward together, and the supporting beam is driven to deform and displace. The sensor module is arranged on the supporting beam and used for detecting the deformation displacement of the supporting beam so as to generate an electric signal, and the electric signal can be transmitted to a control chip (such as a PCB).

When the downward displacement of the touch pad 20 reaches a certain value, the back surface of the touch pad 20 contacts the top surface of the supporting beam to prevent the touch pad 20 from moving downward, and at this time, the supporting beam has a limiting function. The support beam may also be used for fixing the touch device, for example, the support beam may be fixed to the housing 10 of the electronic apparatus to fix the touch device to the electronic apparatus.

In the touch device of the present embodiment, the first protruding portion 43 in the form of the cantilever is easy to deform, which is beneficial to accurately measuring the deformation of the touch pad 20; and the stress analysis of the cantilever is simple, and the information such as the magnitude and the position of the pressing force on the touch pad 20 can be easily obtained.

Optionally, the support beam is of a one-piece construction, or the support beam is of a split construction comprising a plurality of fixed assembled components.

In some examples, as shown in fig. 1 and 2, the support beam includes a plurality of first beams 40 arranged in parallel and a plurality of second beams 30 arranged in parallel, the plurality of first beams 40 and the plurality of second beams 30 are arranged in a crossing manner and fixedly connected, both ends of the first beams 40 protrude from the plurality of second beams 30 and form first protrusions 43, and the first support pad 41 is fixed on a side of the first protrusions 43 away from the second beams 30; the second beam 30 is provided for fixation of the touch device, e.g. the second beam 30 may be fixed with the housing 10 of the electronic device to fix the touch device to the electronic device.

Specifically, the second beam 30 may be fixed to the housing 10 of the electronic device by screws, and the second beam 30 serves to support the first beam 40, and the first beam 40 may be fixed above the second beam 30; the first support pad 41 is disposed above the first protrusion 43, and the gaps between the first beams 40 and the gaps between the second beams 30 can be used to avoid other electronic components or other parts. Further, the first beam 40 and the second beam 30 may be perpendicular to each other, for example, the first beam 40 may be a longitudinal beam and the second beam 30 may be a transverse beam. For example: the support beams may include two first beams 40 and two second beams 30, the two first beams 40 and the two second beams 30 may form a cross-shaped support beam, the two first beams 40 form four first protrusions 43, and four first support pads 41 are respectively fixed above the first protrusions 43 and respectively supported at set positions (e.g., four corners) of the rectangular touch pad 20. Of course, the support beam may further include three or more first beams 40 or second beams 30, and the number of the first beams 40 and the number of the second beams 30 may be the same or different.

In one embodiment, as shown in fig. 1 and 2, the first supporting pad 41 is disposed near the protruding end of the first protruding portion 43 (i.e., the free end of the cantilever), the sensor module includes a plurality of sensors 50 and is respectively mounted on the sides of the plurality of first protruding portions 43 away from the second beam 30, and the sensors 50 are located at the end of the first supporting pad 41 away from the protruding end of the first protruding portion 43. Specifically, the sensor 50 is mounted above the first projection 43, and the sensor 50 is located between the first support pad 41 and the fixed end of the cantilever.

In another embodiment, the sensor 50 of the sensor module is mounted on the side of the first projection 43 adjacent to the second beam 30. Further, the first support pad 41 may be disposed near the protruding end of the first protrusion 43, and the sensor 50 may be located at an end of the first support pad 41 away from the protruding end of the first protrusion 43. That is, the sensor 50 may be installed below the first protrusion 43 and between the first support pad 41 and the fixed end of the cantilever.

In yet another embodiment, both ends of the second beam 30 protrude from the plurality of first beams 40 and form a second protrusion 31 (shown in fig. 2), and the sensor 50 is mounted on the second protrusion 31. Wherein both ends of the second beam 30 form the second protrusions 31, and the sensor 50 may be installed above or below the second protrusions 31. Further, the second protrusion 31 may be used for fixing the touch device, for example: the second protrusion 31 may be fixed to the casing 10 of the electronic device (e.g. a C-casing of a notebook computer) by screws or gluing.

Alternatively, the plurality of first beams 40 and the plurality of second beams 30 may be fixed by a plurality of first screws, and tightening moments of the plurality of first screws are the same. Specifically, the fixing is performed by 4 first screws at 4 crossing positions of the two first beams 40 and the two second beams 30, and the tightening of the first screws may be performed using an electric torque wrench so that tightening torques of the 4 first screws are the same.

The tightening torque of the first screws is the same, so that the fixing degree of the fixed ends of the first protruding portions 43 in the form of the cantilevers is ensured to be the same, the consistency of the fixed ends of the cantilevers is kept, and the balance of force detection of the touch device is improved.

Of course, the first plurality of beams 40 and the second plurality of beams 30 may also be fixed by other means, such as by gluing.

Optionally, as shown in fig. 1, a second support pad 60 is disposed between the first beam 40 and the second beam 30, and the first beam 40, the second support pad 60 and the second beam 30 are fixedly connected. Specifically, the second beam 30 is arranged below the second support pad 60, the first beam 40 is arranged above the second support pad 60, and the first beam 40, the second support pad 60 and the second beam 30 can be fixedly connected through a first screw or fixedly connected through gluing.

The second support pad 60 is disposed to provide a space for the height of the touch pad 20. By providing the first support pad 41 and the second support pad 60 with a space for the height of deformation of the touch pad 20, a sufficient space for deformation of the touch pad 20 can be provided.

Alternatively, adjacent two first beams 40 of the plurality of first beams 40 are connected by at least one first connector 42 to form an i-shaped or ladder-shaped integrated structure, or the plurality of first beams 40 are split structures. That is, the plurality of first beams 40 may be independent of each other and fixed only to the second beam 30; alternatively, as shown in fig. 1, two adjacent first beams 40 of the plurality of first beams 40 may be connected by one first connector 42 to form an i-shaped structure, or two adjacent first beams 40 may be connected by a plurality of first connectors 42 to form a ladder-like structure.

Alternatively, adjacent two second girders 30 of the plurality of second girders 30 are connected by at least one second connector to form an i-shaped or ladder-shaped integrated structure, or the plurality of second girders 30 are a split structure. That is, the plurality of second beams 30 may be independent of each other and fixed only to the first beam 40; alternatively, among the plurality of second beams 30, two adjacent second beams 30 may be connected by one second connection member to form an i-shaped structure, or two adjacent second beams 30 may be connected by a plurality of second connection members to form a ladder-like structure.

Optionally, in the support beams, the second beam 30 provides stable support for the touch panel 20, and may be made of a material with relatively high rigidity, and the first beam 40 may be made of a material with relatively low rigidity, and the two are combined to realize a simple cantilever-type mechanical structure, thereby facilitating the algorithm to perform force processing to the maximum extent. For example: the second beam 30 may be made of manganese steel (e.g., 65 manganese steel), spring steel, etc., and the first beam 40 may be made of a common stainless steel (e.g., 304 stainless steel).

The second beam 30 may also provide a limiting function to limit the maximum input force of the touch pad 20, so as to protect the stable operation of the touch device.

Alternatively, the position of the supporting point for supporting the touch pad 20 can be moved by adjusting the connection position between the first beam 40 and the second beam 30, so as to change the supporting position of the touch pad 20 according to different product requirements, so as to adapt to the touch pad 20 structures with different rigidity requirements. For example: the distance between the adjacent second beams 30 can be adjusted, or the distance between the adjacent first beams 40 can be adjusted, so that the supporting point of the touch pad 20 can move in and out along the second beams 30 to adjust the length of the first protrusion 43, such as: for the thin-sheet type touch pad 20 with smaller rigidity, the supporting point needs to be moved inward (the distance between two adjacent first beams 40 is reduced) to prevent the parts on the back of the touch pad 20 from touching the upper surface of the first beams 40 when the central area of the touch pad 20 is pressed; for a touch pad 20 with greater rigidity, the supporting point needs to be moved outward (increasing the distance between two adjacent first beams 40).

In other examples, as shown in fig. 4, the support beam includes a support floor 32 and a plurality of first beams 40 arranged in parallel. Wherein the supporting base plate 32 is provided for fixation of the touch device, for example, the supporting base plate 32 may be fixed with the housing 10 of the electronic apparatus to fix the touch device to the electronic apparatus. The plurality of first beams 40 are fixed on the support base plate 32, two ends of the first beams 40 protrude from the support base plate 32 to form first protruding portions 43, and the first support pads 41 are fixed on one sides of the first protruding portions 43 far away from the support base plate 32.

Specifically, the supporting base plate 32 may be fixed to the housing 10 of the electronic device by screws, and the supporting base plate 32 is used to support the first beam 40, the first beam 40 may be fixed above the supporting base plate 32, the first supporting pad 41 is fixed above the first beam 40, and the touch pad 20 is fixed on the first supporting pad 41. The entire upper surface of the supporting substrate 32 can function as a limit for the deformation and displacement of the touch pad 20. The support floor 32 may be a rectangular plate and the first beam 40 may be a longitudinal beam parallel to a short side of the rectangular plate or a transverse beam parallel to a long side of the rectangular plate. The support base plate 32 may be provided with an avoiding groove 33 for avoiding other electronic components or other components.

In one embodiment, as shown in fig. 4, the first support pad 41 is disposed near the projecting end of the first projecting portion 43 (i.e., the free end of the cantilever). The sensor 50 of the sensor module is installed on the side of the first protrusion 43 away from the support base 32, and the sensor 50 is located at one end of the first support pad 41 away from the protruding end of the first protrusion 43. That is, the sensor 50 may be installed above the first protrusion 43 and between the first support pad 41 and the fixed end of the cantilever.

In another embodiment, the sensor 50 of the sensor module is mounted on the side of the first protrusion 43 close to the support base 32. Further, the first support pad 41 may be disposed near the protruding end of the first protrusion 43, and the sensor 50 is located at an end of the first support pad 41 away from the protruding end of the first protrusion 43. That is, the sensor 50 may be installed below the first protrusion 43 and between the first support pad 41 and the fixed end of the cantilever.

In yet another embodiment, both ends of the support base 32 protrude from the plurality of first beams 40 and form second protruding parts 31 (as shown in fig. 4), and the sensor 50 is mounted on the second protruding parts 31. Wherein the sensor 50 may be installed above or below the second protrusion 31.

In the above example, the support of the whole touch device can be basically carried by the second beam 30 or the support base plate 32, and since the rigidity of the second beam 30 or the support base plate 32 is relatively high, the requirement on the whole structure rigidity of the housing 10 of the electronic device connected with the second beam 30 or the support base plate 32 is not high, and the housing 10 of the electronic device does not need to be reinforced, thereby facilitating the realization of the modular design. For example: the touch device is suitable for products with small thickness, such as notebook computers, and the like, and although the C shell of the notebook computer is thin and low in rigidity, the touch device can still be fixed on the C shell, so that the purpose of touch is achieved.

Optionally, the first protrusion 43 and the first support pad 41 are of an integral structure, or the first protrusion 43 and the first support pad 41 are of a split-type assembly structure.

In one embodiment, as shown in fig. 1 and 2, the first protrusion 43 and the first supporting pad 41 are of a unitary structure (i.e., are one piece), and the first supporting pad 41 may be formed by an upwardly protruding protrusion on the first protrusion 43, or the first supporting pad 41 may be formed by bending a protruding end of the first protrusion 43 upward and attaching the protruding end to the first protrusion 43.

In another embodiment, the first protrusion 43 and the first supporting pad 41 are assembled in a split manner, i.e. the first supporting pad 41 is a separate component and is fixed on the first supporting pad 41 by a second screw or by gluing. As shown in fig. 3, the plurality of first supporting pads 41 and the plurality of first protrusions 43 are connected by a plurality of second screws, so that the assembly process of the first supporting pads 41 can be greatly simplified, and the production cost can be saved. In addition, the tightening torque of a plurality of second screws can be the same, so that the consistency of the fixed end of the cantilever is kept, and the balance of force detection of the touch device is improved.

Optionally, the first supporting pad 41 and the touch pad 20 are fixed by a plurality of third screws, and tightening torques of the plurality of third screws are the same, which is beneficial to maintaining consistency of fixed ends of the cantilevers, and is further beneficial to improving balance of force detection of the touch device; or, the first supporting pad 41 and the touch pad 20 are fixed by gluing, for example, the first supporting pad 41 and the touch pad 20 are fixed by gluing through a strong gel, and the gel fixation can ensure firm connection and simultaneously has certain connection elasticity, thereby improving touch feeling.

In a specific example, as shown in fig. 3, the first support pads 41 may be designed as independent internally threaded support pads, and two (or another number of) threaded holes may be provided on each first support pad 41. During installation, the four first supporting pads 41 are respectively fixed at the four corners of the back of the touch pad 20 by gluing to form a module, then the module is turned upside down, the four first supporting pads 41 are respectively placed into the positioning holes on the four first protruding portions 43 for positioning, and then the first supporting pads 41 and the first protruding portions 43 are screwed and fixed by using second screws, wherein the tightening torque of 8 second screws is strictly ensured to be consistent, so that the electric torque wrench can be used for tightening.

Optionally, the sensor module further includes a substrate (not shown) fixed on a side of the support beam near the touch pad 20, at least a portion of the substrate is fixed on the first protrusion 43, the sensor 50 is mounted on the portion of the substrate fixed to the first protrusion 43, and the substrate can transmit an electric signal of the sensor 50 to the control chip.

Specifically, the substrate may be a flexible circuit board FPC, which may be bonded to the support beam, the sensor 50 may be soldered to the FPC, and a gap may be provided between the sensor 50 and the back surface of the touch pad 20. The FPC may also be connected with an electrical connector of the touch pad 20 so as to transmit an electrical signal of the sensor 50 to the touch chip. Of course, the substrate can also be a silver paste circuit board, or include a silver paste circuit film, a lead and the like.

Alternatively, the sensor 50 may be a piezoelectric sensor (referred to as a piezoceramic sensor, a piezoelectric film sensor, other piezoelectric crystal sensors, etc.), a resistive strain gauge, a fiber grating sensor, etc.

Alternatively, the touch pad 20 may be capacitive for sensing the position of the user's finger, gesture, and other information. The touch pad 20 may include a touch pad, a control chip mounted on the back surface of the touch pad, and an electrical connector, which may be connected to the substrate of the sensor module. Of course, the touch pad 20 may also include other electronic components, such as a haptic vibration feedback motor, etc.

In the description of the present invention, the term "plurality" means two or more than two.

Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.

Claims

1. The utility model provides a touch device, its characterized in that, includes touch-control board, a supporting beam and sensor module, a supporting beam has a plurality of first bulges that extend to the outside, first bulge is the cantilever form, be equipped with first supporting pad on the first bulge, the touch-control board is fixed on the first supporting pad, the sensor module is installed on a supporting beam.

2. The touch device of claim 1, wherein the support beam comprises a support base and a plurality of first beams arranged in parallel, the support base is configured for fixing the touch device, the plurality of first beams are fixed on the support base, two ends of the first beams protrude from the support base to form the first protruding portion, and the first support pad is fixed on a side of the first protruding portion away from the support base.

3. The touch device of claim 2, wherein the first supporting pad is close to the protruding end of the first protruding portion, the sensor of the sensor module is mounted on a side of the first protruding portion away from the supporting substrate, and the sensor is located at an end of the first supporting pad away from the protruding end of the first protruding portion;

or the sensor of the sensor module is arranged on one side of the first bulge part close to the support bottom plate;

or, both ends of the supporting bottom plate protrude from the plurality of first beams and form second protruding parts, and the sensor is installed on the second protruding parts.

4. The touch device of claim 1, wherein the support beam comprises a plurality of first beams disposed in parallel and a plurality of second beams disposed in parallel, the first beams and the second beams are disposed in an intersecting manner and fixedly connected, two ends of the first beams protrude from the second beams and form the first protrusion, the first support pad is fixed on a side of the first protrusion away from the second beams, and the second beams are disposed for fixing the touch device.

5. The touch device of claim 4, wherein the first supporting pad is close to the protruding end of the first protruding portion, the sensor of the sensor module is mounted on a side of the first protruding portion away from the second beam, and the sensor is located at an end of the first supporting pad away from the protruding end of the first protruding portion;

or the sensor of the sensor module is arranged on one side of the first bulge part close to the second beam;

or, both ends of the second beam protrude from the plurality of first beams and form a second protruding portion, and the sensor is mounted on the second protruding portion.

6. The touch device of claim 4, wherein a second support pad is disposed between the first beam and the second beam, and the first beam, the second support pad and the second beam are fixedly connected.

7. The touch device of claim 4, wherein the first beams and the second beams are fixed by first screws, and tightening torques of the first screws are the same;

alternatively, a plurality of the first beams and a plurality of the second beams are fixed by gluing.

8. The touch device of claim 4, wherein two adjacent first beams of the plurality of first beams are connected by at least one first connecting member to form an I-shaped or ladder-shaped integrated structure, or wherein the plurality of first beams are split structures;

and in the plurality of second beams, two adjacent second beams are connected through at least one second connecting piece to form an I-shaped or ladder-shaped integrated structure, or the plurality of second beams are split structures.

9. The touch device of any one of claims 1-8, wherein the first protrusion and the first support pad are integrally formed, or wherein the first protrusion and the first support pad are separately assembled.

10. The touch device according to any one of claims 1 to 8, wherein the first protrusion is fixed to the first support pad by a plurality of second screws, and tightening torques of the plurality of second screws are the same, or the first protrusion is fixed to the first support pad by adhesion;

the first supporting pad and the touch pad are fixed through a plurality of third screws, the tightening torque of the third screws is the same, or the first supporting pad and the touch pad are fixed through gluing.