CN115220585A

CN115220585A - Touch pad, vibration motor and electronic equipment

Info

Publication number: CN115220585A
Application number: CN202210674526.2A
Authority: CN
Inventors: 张胜斌; 刘凯; 郭益平
Original assignee: Shenzhen Goodix Technology Co Ltd
Current assignee: Shenzhen Goodix Technology Co Ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-10-21

Abstract

The application provides a touch pad, a vibration motor and electronic equipment, wherein the touch pad can provide obvious tactile feedback of vibration sense for a user so as to improve the use experience of the user. The touch panel includes: a cover plate; a circuit board provided with touch sensing electrodes; pressure detection means for detecting a pressure applied by a user on the cover plate; a vibratory motor comprising: a lever; the piezoelectric vibrator is positioned at the power input end of the lever and used for receiving an electric signal indicating the pressure applied by a user on the cover plate to generate vibration, and the distance between the piezoelectric vibrator and the fulcrum of the lever is a first distance; the vibrator is located at the power output end of the lever, the distance between the vibrator and the fulcrum of the lever is a second distance, the second distance is larger than the first distance, and the lever is used for amplifying the vibration displacement of the piezoelectric vibrator so that the vibrator vibrates with the amplified vibration displacement and provides the tactile feedback of the vibration for a user.

Description

Touch pad, vibration motor and electronic equipment

Technical Field

The present application relates to the field of electronic technology, and more particularly, to a touch pad, a vibration motor, and an electronic device.

Background

With the development of the era, in various user terminals, for example: all dispose the touch-control board in terminal equipment such as computer, panel and cell-phone, can be provided with vibrating motor in its this touch-control board, this vibrating motor can realize tactile feedback in user's use and the pressing to terminal equipment, promotes the user and experiences to terminal equipment's use.

The vibration motor mainly adopts a linear motor scheme in the market at present, and the linear motor mainly comprises a coil, an electromagnet and the like, has a complex structure, a large integral volume and high production cost. The other piezoelectric motor has the problems of small vibration displacement, low amplitude intensity and the like, and is difficult to provide tactile feedback with obvious vibration feeling for a user. In view of this, how to provide a touch panel with obvious vibration feedback to improve the user experience is an urgent technical problem to be solved.

Disclosure of Invention

The application provides a touch pad, a vibration motor and electronic equipment, wherein the touch pad can provide obvious tactile feedback of vibration sense for a user so as to improve the use experience of the user.

In a first aspect, a touch pad is provided, including: a cover plate; the circuit board is arranged below the cover plate, and is provided with a touch sensing electrode for sensing the touch of a user on the cover plate; the pressure detection device is arranged below the circuit board and used for detecting the pressure applied by a user on the cover plate; a vibration motor disposed under the circuit board for generating vibration according to pressure applied by a user on the cover plate to provide tactile feedback of the vibration to the user; wherein, the vibration motor includes: a lever; the piezoelectric vibrator is positioned at the power input end of the lever and used for receiving an electric signal indicating the pressure applied by a user on the cover plate to generate vibration, and the distance between the piezoelectric vibrator and the fulcrum of the lever is a first distance; the vibrator is located at the power output end of the lever, the distance between the vibrator and the fulcrum of the lever is a second distance, the second distance is larger than the first distance, and the lever is used for amplifying the vibration displacement of the piezoelectric vibrator so that the vibrator vibrates with the amplified vibration displacement and provides the tactile feedback of the vibration for a user.

In the technical scheme of the embodiment of the application, the touch pad comprises the touch sensing electrode and the pressure detection device, and can realize touch detection and pressure detection of a user on the cover plate at the same time. Further, in the touch panel, the lever, the piezoelectric vibrator and the vibrator are used for constructing the vibration motor, and the vibration motor has the advantages of low cost, small volume, high vibration frequency and the like of the piezoelectric vibrator. Meanwhile, the vibration motor can amplify relevant parameters such as vibration displacement of the piezoelectric vibrator by using the lever so that the vibrator has larger vibration displacement, and the vibration is transmitted to the outside of the touch pad through the vibrator, so that a user pressing the touch pad can have more obvious tactile feedback of vibration sense.

In some possible embodiments, the piezoelectric vibrator is configured to vibrate in a first direction parallel to the touch pad; when the piezoelectric vibrator is static, the lever extends along a second direction which is perpendicular to the first direction and parallel to the touch pad.

In the technical solution of this embodiment, the piezoelectric vibrator vibrates in the direction parallel to the touch pad, rather than in the direction perpendicular to the touch pad, so that the space occupied by the piezoelectric vibrator in the direction perpendicular to the touch pad, that is, the thickness space occupied by the piezoelectric vibrator and the vibration motor on which the piezoelectric vibrator is located, can be reduced. On this basis, the lever is parallel to the touch pad and extends in a direction perpendicular to the vibration direction of the piezoelectric vibrator, so that a longer lever force arm can be conveniently provided, the amplification times of the lever on the vibration displacement and other related parameters of the piezoelectric vibrator are improved, and the vibration performance of the vibration motor is further improved.

In some possible embodiments, the vibrator and/or the lever are plate-shaped structures parallel to the touch pad.

Through the technical scheme of the embodiment, in the direction vertical to the touch pad, the vibrators and/or the levers in the vibrating motor can be plate-shaped structural members with small thickness, so that the vibrators and/or the levers do not occupy excessive thickness space in the direction vertical to the touch pad, and the thickness space occupied by the vibrating motor in the touch pad is favorably further reduced.

In some possible embodiments, the piezoelectric vibrator is located on a side of the lever away from the touch interface of the touch pad in a third direction, the third direction being perpendicular to the first direction and the second direction; alternatively, the piezoelectric vibrator is located on either side of the lever in the first direction.

In the technical solution of this embodiment, the piezoelectric vibrator is disposed on a side of the lever away from the touch interface in the touch pad, so that an external stress applied on the touch interface can be prevented from affecting the piezoelectric vibrator, thereby improving the overall use reliability of the piezoelectric vibrator and the vibration motor. Or, the piezoelectric vibrator is located any one side of the lever in the first direction, and the piezoelectric vibrator can drive the power input end of the lever to have larger vibration displacement, so that after the input vibration displacement is amplified by the lever, the vibrator located at the power output end of the lever also has larger output vibration displacement.

In some possible embodiments, the lever has a recess formed therein, in which at least part of the piezoelectric vibrator is located.

With the technical solution of this embodiment, it is possible to reuse a space in the lever to accommodate at least part of the piezoelectric vibrator, thereby reducing the entire thickness or the entire volume of the vibration motor.

In some possible embodiments, the vibration motor further includes: the piezoelectric vibrator is connected to the lever through the adhesive layer.

In the technical scheme of this embodiment, the mode of connection of piezoelectric vibrator and lever is comparatively simple, can promote vibrating motor's manufacturing efficiency and productivity.

In some possible embodiments, the vibration motor further includes: and the connecting area of the intermediate piece and the lever is smaller than the surface area of the piezoelectric vibrator facing the lever.

Through the technical scheme of this embodiment, through set up the middleware between piezoelectric vibrator and lever, can be when the use reliability of piezoelectric vibrator is in order to improve piezoelectric vibrator through middleware protection piezoelectric vibrator, can also make the oscillator have vibration parameters such as bigger vibration displacement to promote vibrating motor's whole vibration performance and vibration effect.

In some possible embodiments, the middleware comprises: the protruding structure is connected with the sheet structure and protrudes towards the lever; the intermediate member is connected to the lever through the protrusion structure, and the intermediate member is connected to the piezoelectric vibrator through the sheet structure.

Through the technical scheme of this embodiment, the sheet structure in the middleware is favorable to protecting piezoelectric vibrator and preventing it from taking place to damage, and protruding structure in the middleware can make the lever play bigger amplification effect to piezoelectric vibrator's vibration displacement to make the oscillator have bigger vibration displacement, promote vibrating motor's wholeness ability.

In some possible embodiments, a groove structure is provided in the lever that fits into the protrusion structure.

Through the technical scheme of this embodiment, protruding structure in the middleware can be comparatively reliable and stable be fixed in the groove structure of lever, promotes the holistic reliability in utilization of vibrating motor. In addition, the groove structure is arranged in the lever, so that the middle part can be conveniently installed on the lever through the bulge structure, and the manufacturing efficiency of the vibration motor is improved.

In some possible embodiments, the piezoelectric vibrator is located on either side of the lever in the first direction, and the vibration motor further includes: and a support connected to a side of the piezoelectric vibrator away from the lever in the first direction.

Through the technical scheme of this embodiment, when support piece supports and sets up in piezoelectric vibrator one side of keeping away from the lever in the first direction, piezoelectric vibrator can play comparatively effectual power input to the lever in the one side that is close to the lever on the first direction to promote the holistic vibration performance of vibrating motor.

In some possible embodiments, the support member is an elastic member that forms bending vibration in the first direction in cooperation with the piezoelectric vibrator.

Through the technical scheme of this embodiment, the whole of elastic component and piezoelectric vibrator can produce bigger initial displacement in the first direction to promote the vibration displacement of oscillator, with the holistic vibration performance of promotion vibrating motor.

In some possible embodiments, the dimension of the support in the second direction is greater than or equal to the dimension of the piezoelectric vibrator in the second direction.

In some possible embodiments, a support portion is provided at the fulcrum of the lever, the support portion includes a fixed end and a rotating end, the rotating end is connected to the lever, and the rotating end is configured to rotate in an axial direction of the support portion following the vibration of the piezoelectric vibrator.

Through the technical scheme of the embodiment, the supporting part can play a good fulcrum role in the lever, and then the lever can play a good amplification role in the vibration parameters of the piezoelectric vibrator.

In some possible embodiments, the support is a bearing.

In some possible embodiments, the vibration motor further includes: the casing, the casing includes top shell and drain pan, and top shell and drain pan cover each other and close in order to form the accommodation space who holds lever, piezoelectric vibrator and oscillator.

Through the technical scheme of this embodiment, the casing that top shell and drain pan formed can play the guard action to the important part among the vibrating motor, and this casing can play the power value conduction to the vibration that the oscillator formed for the vibration that the oscillator formed among the vibrating motor passes through the casing and conducts to external parts.

In some possible embodiments, the vibration motor further includes: the elastic sheet mechanism is connected between the vibrator and the shell and used for transmitting the vibration of the vibrator to the shell.

In some possible embodiments, the vibration motor further includes: and the damping glue is positioned between the vibrator and the elastic sheet mechanism and used for damping the vibrator when the piezoelectric vibrator stops vibrating.

In some possible embodiments, the piezoelectric vibrator and the vibrator are located on the same side of a fulcrum of the lever; or the piezoelectric vibrator and the vibrator are positioned on two sides of the fulcrum of the lever.

In some possible embodiments, the weight of the vibrator is greater than the weight of the lever.

Through the technical scheme of this embodiment, the weight of oscillator is great, can be so that the oscillator has great inertia and power value impact, and meanwhile, the weight of lever is less, can reduce vibrating motor's whole weight. In some possible embodiments, a through hole may be formed in the lever to reduce the weight of the lever.

In some possible embodiments, a through hole is formed in the lever to reduce the weight of the lever.

In some possible embodiments, the piezoelectric vibrator is made of a piezoelectric ceramic, and the piezoelectric ceramic includes any one of: the piezoelectric ceramic may be a single-layer piezoelectric ceramic, a multilayer piezoelectric ceramic, a piezoelectric ceramic in which the vibration direction and the electric field direction are parallel to each other, or a piezoelectric ceramic in which the vibration direction and the electric field direction are perpendicular to each other.

In a second aspect, there is provided a vibration motor for application to a touch pad and for providing vibratory tactile feedback to a user touching the touch pad, the vibration motor comprising: a lever; the piezoelectric vibrator is positioned at the power input end of the lever, and the distance between the piezoelectric vibrator and the fulcrum of the lever is a first distance; the vibrator is located at the power output end of the lever, the distance between the vibrator and the fulcrum of the lever is a second distance, the second distance is larger than the first distance, and the lever is used for amplifying the vibration displacement of the piezoelectric vibrator so that the vibrator vibrates with the amplified vibration displacement.

In a third aspect, an electronic device is provided, including: the touch pad of the first aspect or any possible implementation manner of the first aspect, wherein the touch pad is used for providing pressure detection and tactile feedback functions for an electronic device.

Drawings

Fig. 1 is a schematic side view and a schematic top view of a vibration motor provided in an embodiment of the present application.

Fig. 2 is an exploded view of another exemplary vibration motor according to an embodiment of the present disclosure.

Fig. 3 is an exploded view of another vibration motor according to an embodiment of the present disclosure.

Fig. 4 illustrates several fixing connection ways of the piezoelectric vibrator and the lever according to the embodiment of the present application.

Fig. 5 is a partial schematic view of another vibration motor provided in an embodiment of the present application.

Fig. 6 is a schematic enlarged view of an area where a piezoelectric vibrator is located in a vibration motor provided in an embodiment of the present application.

Fig. 7 is an exploded view of another exemplary vibration motor according to an embodiment of the present disclosure.

Fig. 8 is an exploded view of another vibration motor according to an embodiment of the present disclosure.

Fig. 9 is an exploded view of another vibration motor according to an embodiment of the present disclosure.

Fig. 10 is an exploded view of another vibration motor according to an embodiment of the present application.

Fig. 11 is an exploded view of another vibration motor according to an embodiment of the present disclosure.

Fig. 12 is a schematic structural diagram of a touch pad according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

The embodiment of the application can be suitable for the vibration motor. The vibration motor may be applied to various electronic devices to provide a tactile feedback function of vibration in the electronic devices. The electronic device may be a mobile phone, a tablet computer, a smart wearable device, a smart door lock, and the like, which is not limited in the embodiments of the present disclosure.

The vibration motor in the related art at present mainly includes: a rotor motor (ERM), a Linear motor (LRA) and a Piezo motor (Piezo).

The principle of rotor motor vibration is similar to that of a direct current motor, and the rotor in the center of the motor is driven to rotate by using the electromagnetic induction principle. The center of the rotor motor is an eccentric rotor, and when the motor is driven to rotate, the eccentric rotor can generate a centrifugal force, and the centrifugal force enables the motor to generate micro displacement so as to generate vibration. The linear motor is a spring system consisting of a spring, a magnetic mass and a coil, wherein the spring suspends the coil inside the linear motor, and when current passes through the coil, a magnetic field is generated. The coil is connected with the magnetic mass block, when the current flowing through the coil changes, the direction and the strength of the magnetic field also change, and the mass block moves in the magnetic field, so that people can sense the vibration. Above-mentioned two kinds of motors all have great volume, and to the comparatively valuable user terminal of inner space, these two kinds of motors can occupy more space in the terminal equipment, are unfavorable for terminal equipment's frivolousization development. In addition, since the linear motor has a complicated structure, the manufacturing cost thereof is high.

In order to solve the problems of the above two motors, a piezoelectric motor (Piezo) has been attracting attention in the industry. The piezoelectric motor may be formed of a piezoelectric material, such as a piezoelectric ceramic, which is deformed by application of a voltage thereto, and by which vibration is generated. Compared with the rotor motor and the linear motor, the piezoelectric motor has higher vibration frequency and smaller volume, so that only smaller space inside the terminal equipment is occupied, and high-precision tactile vibration feedback can be formed. However, the vibration displacement amount of a general piezoelectric motor is small and the amplitude intensity is low, and for example, the vibration displacement amount of a general piezoelectric motor is 30 μm or less, so that it is difficult to provide a tactile feedback with a significant vibration sensation to a user, and the user experience is affected.

In view of this, the present application provides a vibration motor, which has a high vibration displacement amount to provide a user with a tactile feedback with an obvious vibration sense while achieving a small volume and a low cost, and the vibration motor can be well adapted to a touch pad of an electronic device such as a terminal, thereby improving the user experience of the electronic device such as the terminal.

Fig. 1 shows a schematic side view and a schematic top view of a vibration motor 100 provided in an embodiment of the present application, where fig. 1 (a) is a schematic side view and fig. 1 (b) is a schematic top view.

As shown in fig. 1, in the embodiment of the present application, the vibration motor 100 may be configured to be disposed in a touch pad of an electronic device, and the vibration motor 100 may provide vibratory tactile feedback to a user touching the touch pad. Specifically, the vibration motor 100 includes: a lever 110, a piezoelectric vibrator 120, and a vibrator 130.

The piezoelectric vibrator 120 is located at the power input end of the lever 110, and the distance between the piezoelectric vibrator 120 and the fulcrum 111 of the lever 110 is a first distance L1. The vibrator 130 is located at the power output end of the lever 110, the distance between the vibrator 130 and the fulcrum 111 of the lever 110 is a second distance L2, wherein the second distance L2 is greater than the first distance L1, and the lever 110 is configured to amplify the vibration displacement of the piezoelectric vibrator 120, so that the vibrator 130 vibrates with the amplified vibration displacement.

Specifically, in the embodiment of the present application, the piezoelectric vibrator 120 may be a device that generates vibration by inverse piezoelectric effect, that is, the piezoelectric vibrator 120 may be formed by preparing a piezoelectric material that generates mechanical stress to generate vibration when a voltage is applied to the piezoelectric material. By way of example and not limitation, the piezoelectric vibrator 120 may be made of piezoelectric ceramics, or the piezoelectric vibrator 120 may be made of other piezoelectric materials such as piezoelectric polymers, piezoelectric composites, and the like.

The piezoelectric vibrator 120 is provided at a power input end of the lever 110 to provide a power input to the lever 110. The vibrator 130 is provided at a power output end of the lever 110 with respect to the piezoelectric vibrator 120. When the piezoelectric vibrator 120 vibrates, it can drive the lever 110 and the vibrator 130 at its output end to vibrate.

Specifically, the vibrator 130 plays a role of a heavy load in the vibration motor 100, which may have a large inertia and a force impact effect during vibration. The materials of the vibrator include but are not limited to: the metal material such as stainless steel, copper, tungsten steel, this metal material is difficult for taking place the deformation and can have higher use reliability.

In addition, the lever 110 plays a role of amplifying the vibration displacement amount and the force value transmission of the piezoelectric vibrator 120 in the vibration motor 100, and the material of the lever 110 includes but is not limited to: stainless steel, alloys, tungsten steel, injection molded parts, and the like.

Alternatively, in the embodiment of the present application, the vibrator 130 and the lever 110 may be of an integrally molded structure, and the vibrator 130 and the lever 110 are made of the same material. Or, the vibrator 130 and the lever 110 may be in a split structure, and the vibrator 130 and the lever 110 are connected together by a glue layer or by welding, and the materials of the vibrator 130 and the lever 110 may be the same or different.

Alternatively, in the embodiment of the present application, the weight of the vibrator 130 may be greater than that of the lever 110. In the technical solution of this embodiment, the weight of the vibrator 130 is large, so that the vibrator 130 has large inertia and force impact, and at the same time, the weight of the lever 110 is small, so that the overall weight of the vibration motor 100 can be reduced. In some possible embodiments, a through hole may be formed in the lever 110 to reduce the weight of the lever 110.

Specifically, in the present embodiment, in order to achieve an amplification effect of the lever 110 on the vibration displacement of the piezoelectric vibrator 120, a first distance L1 between the piezoelectric vibrator 120 and the fulcrum 111 of the lever 110 is smaller than a second distance L2 between the vibrator 130 and the fulcrum 111. Alternatively, as shown in fig. 1, the first distance L1 between the piezoelectric vibrator 120 and the fulcrum 111 may be understood as the maximum distance between the contact area of the piezoelectric vibrator 120 on the lever 110 and the fulcrum 111, and similarly, the second distance L2 between the vibrator 130 and the fulcrum 111 may be understood as the maximum distance between the contact area of the vibrator 130 on the lever 110 and the fulcrum 111.

When the piezoelectric vibrator 120 vibrates, it generates a first vibration velocity V1, and the vibrator 130, driven by the lever 110, generates a second vibration velocity V2. As can be seen from the lever principle, the first vibration speed V1, the second vibration speed V2, and the first distance L1 and the second distance L2 satisfy the relationship: V1/L1= V2/L2, and therefore, the second vibration speed V2= (L2/L1) × V1, the second vibration speed V2 being amplified by (L2/L1) times with respect to the first vibration speed V1. Since the vibration time of vibrator 130 and piezoelectric vibrator 120 is the same, the vibration displacement of vibrator 130 is amplified by (L2/L1) times with respect to the vibration of piezoelectric vibrator 120. Based on the same principle as described above, the vibration acceleration of the vibrator 130 is also amplified by (L2/L1) times with respect to the vibration acceleration of the piezoelectric vibrator 120.

Therefore, according to the above-described configuration, the vibration displacement, the vibration velocity, and the vibration acceleration of the vibrator 130 are all amplified by (L2/L1) times with respect to the piezoelectric vibrator 120. The vibration displacement specifically reflects the magnitude of vibration amplitude, the vibration speed reflects the magnitude of vibration energy, and the vibration acceleration reflects the magnitude of impact force. Therefore, the vibrator 130 may have a larger vibration amplitude, vibration energy and impact force than the piezoelectric vibration 120, and the vibrator 130 provides vibration to the external environment, so that the user may have tactile feedback with a more obvious vibration sense, thereby improving the user experience.

In summary, in the technical solution of the embodiment of the present application, the vibration motor 100 is constructed by using the lever 110, the piezoelectric vibrator 120 and the vibrator 130, and the vibration motor 100 can have the advantages of low cost, small volume, high vibration frequency and the like of the piezoelectric vibrator 120. Meanwhile, the vibration motor 100 may amplify a parameter related to a vibration displacement of the piezoelectric vibrator 120 using the lever 110, so that the vibrator 130 has a large vibration displacement, and may transmit a vibration to the outside of the touch pad through the vibrator 130, so that a user pressing the touch pad may have a tactile feedback with a more obvious vibration sense.

Fig. 2 shows an exploded schematic structure diagram of another vibration motor 100 provided in the embodiment of the present application.

As shown in fig. 2, in the present embodiment, the piezoelectric vibrator 120 may be configured to vibrate in a direction parallel to a touch pad, which may be a plate-shaped structure parallel to the xy-plane shown in fig. 2.

Specifically, a cover plate for receiving a user's touch may be included in the touch pad, and the cover plate may be a plate-shaped structure parallel to the xy plane shown in fig. 2. In the embodiment of the present application, a direction parallel to the touch pad may also be understood as a direction parallel to the cover plate.

As an example, the piezoelectric vibrator 120 may vibrate in a first direction x shown in fig. 2. When the piezoelectric vibrator 120 is at rest, the lever 110 extends along a second direction y perpendicular to the first direction x and parallel to the touch pad. In this case, the first distance L1 between the piezoelectric vibrator 120 and the fulcrum 111 and the second distance L2 between the vibrator 130 and the fulcrum 111 may be distances in the first direction x.

Therefore, in the vibration motor 100 provided in the embodiment of the present application, the piezoelectric vibrator 120 vibrates in the direction parallel to the touch pad, rather than in the direction perpendicular to the touch pad, so that the space required by the piezoelectric vibrator 120 in the direction perpendicular to the touch pad, that is, the thickness space required by the piezoelectric vibrator 120 and the vibration motor 100 on which the piezoelectric vibrator is located, can be reduced. On this basis, the lever 110 is parallel to the touch pad and extends in a direction perpendicular to the vibration direction of the piezoelectric vibrator 120, so that a longer lever arm can be provided conveniently, the amplification factor of the lever 110 on the relevant parameters such as the vibration displacement of the piezoelectric vibrator 120 is improved, and the vibration performance of the vibration motor 100 is further improved.

In some examples, the cover plate in the touch pad may be a rectangular plate-like structure having a rectangular large face in the xy-plane. Alternatively, the first direction x shown in fig. 2 may be a long side direction of the cover plate on the xy plane, and the second direction y shown in fig. 2 may be a short side direction of the cover plate on the xy plane. Alternatively, the first direction x shown in fig. 2 may be a short-side direction of the cover plate on the xy plane, and the second direction y shown in fig. 2 may be a long-side direction of the cover plate on the xy plane.

Alternatively, as shown in fig. 2, in some embodiments, the vibrator 130 and/or the lever 110 may be a plate-shaped structure parallel to the touch pad. Alternatively, the vibrator 130 and/or the lever 110 may be a plate-shaped structure parallel to a cover plate of the touch pad.

With the technical solution of this embodiment, the vibrator 130 and/or the lever 110 in the vibration motor 100 can be a plate-shaped structural member with a small thickness in a direction perpendicular to the touch pad (e.g. the z direction shown in fig. 2), so that the vibrator 130 and/or the lever 110 does not occupy too much thickness space in the direction perpendicular to the touch pad, which is beneficial to further reduce the thickness space occupied by the vibration motor 100 in the touch pad.

Alternatively, as shown in fig. 2, in some embodiments, the piezoelectric vibrator 120 is located on a side of the lever 110 that is far away from a touch interface (i.e., a touch interface of a cover) in the touch pad in a third direction z, which is perpendicular to the first direction x and the second direction y, the touch interface being an interface of the touch pad for receiving a touch of a user, and specifically, the touch interface may be an interface of the touch pad in which the cover faces the user, and the vibration motor 100 may be disposed below the cover. In this embodiment, the piezoelectric vibrator 120 is disposed on the side of the lever 110 away from the touch interface in the touch pad, and the piezoelectric vibrator 120 is prevented from being affected by external stress applied to the touch interface, thereby improving the overall reliability of the piezoelectric vibrator 120 and the vibration motor 100.

Alternatively, as shown in fig. 2, in the third direction z, a side of the lever 110 away from the touch interface in the touch pad is provided with a recess 112, and the recess 112 can be used for accommodating at least part of the piezoelectric vibrator 120. In other words, in the third direction z, the piezoelectric vibrator 120 may be at least partially located in the recess 112.

Specifically, in this embodiment, at least a portion of the piezoelectric vibrator 120 can be accommodated in the thickness space of the multiplexing lever 110 in the third direction z, which is perpendicular to the thickness direction of the touch pad, so that the space occupied by the piezoelectric vibrator 120 in the thickness direction can be further reduced, and the overall thickness of the vibration motor 100 can be reduced.

Alternatively, fig. 3 shows an exploded schematic structure diagram of another vibration motor 100 provided in the embodiment of the present application.

As shown in fig. 3, the piezoelectric vibrator 120 is located on either side of the lever 110 in the first direction x. Compared with the embodiment shown in fig. 2, in this embodiment, the piezoelectric vibrator 120 is located in the first direction x of the lever 110, and the piezoelectric vibrator 120 vibrates along the first direction x, and the piezoelectric vibrator 120 can drive the power input end of the lever 110 to have a larger vibration displacement, so that after the input vibration displacement is amplified by the lever 110, the vibrator 130 located at the power output end of the lever 110 also has a larger output vibration displacement.

Alternatively, as shown in fig. 3, in the first direction x, the lever 110 may also be provided with a recess 112, and the recess 112 may be used for accommodating at least part of the piezoelectric vibrator 120. In other words, in the first direction x, the piezoelectric vibrator 120 may be at least partially located in the recess 112. Through the technical scheme of the embodiment, the piezoelectric vibrator 120 fully utilizes the thickness space of the lever 110, so that the space occupied by the piezoelectric vibrator 120 in the direction parallel to the touch pad can be further reduced, and the overall volume of the vibration motor 100 is reduced.

Alternatively, in the embodiment of the above application, the piezoelectric vibrator 120 may be a different type of piezoelectric vibrator. For example, in the embodiment shown in fig. 2 and 3, the piezoelectric vibrator 120 has a longer dimension in the first direction x, the electrodes of the piezoelectric vibrator 120 are located on the xy plane, the electric field direction of the piezoelectric vibrator 120 is parallel to the third direction z, and the piezoelectric vibrator 120 can contract and expand in the first direction x to form a vibration displacement. In this embodiment, the electric field direction of the piezoelectric vibrator 120 is perpendicular to the vibration direction of the piezoelectric vibrator 120.

Alternatively, in other embodiments, the electric field direction of the piezoelectric vibrator 120 may be parallel to the vibration direction of the piezoelectric vibrator 120. Alternatively, the piezoelectric vibrator 120 may be made of piezoelectric ceramics whose vibration direction and electric field direction are parallel to each other or perpendicular to each other. Besides, the piezoelectric vibrator 120 may be made of a single-layer piezoelectric ceramic or a multi-layer piezoelectric ceramic, and the specific type of the piezoelectric ceramic is not limited in the embodiment of the present application.

Fig. 4 illustrates several fixing connection ways of the piezoelectric vibrator 120 and the lever 110 provided by the embodiment of the present application.

As shown in fig. 4 (a), in this embodiment, the vibration motor 100 further includes a first adhesive layer 131, and the piezoelectric vibrator 120 may be directly connected to the lever 110 through the first adhesive layer 131. In this embodiment, the piezoelectric vibrator 120 and the lever 110 are simply connected, so that the manufacturing efficiency and productivity of the vibration motor 100 can be improved.

Alternatively, in this embodiment, the area of the first adhesive layer 131 may be equal to the contact area of the piezoelectric vibrator 120 and the lever 110. In this case, the force between the piezoelectric vibrator 120 and the lever 110 may be uniform, which is beneficial to protect the piezoelectric vibrator 120 and prevent the piezoelectric vibrator 120 from being damaged due to excessive local pressure between the piezoelectric vibrator 120 and the lever 110.

As shown in fig. 4 (b), in this embodiment, the vibration motor 100 includes an intermediate member 140, and the piezoelectric vibrator 120 is connected to the lever 110 through the intermediate member 140, wherein the area of the connection of the intermediate member 140 to the lever 110 is smaller than the surface area of the piezoelectric vibrator 120 facing the lever 110. Specifically, in this embodiment, the middle member 140 may be connected to the lever 110 by a first adhesive layer 131, and the middle member 140 may be connected to the middle member 140 by a second adhesive layer 132. The piezoelectric vibrator 120 is connected to the lever 110 through the first adhesive layer 131, the second adhesive layer 132, and the intermediate member 140, wherein the connection area of the intermediate member 140 and the lever 110 may be equal to the area of the first adhesive layer 131.

By way of example and not limitation, the intermediate member 140 may be a metal sheet having a relatively thin thickness and relatively high strength. The connection area between the metal sheet and the lever 110 may be equal to the large area of the metal sheet, and the large area of the metal sheet may be smaller than the surface area of the piezoelectric vibrator 120 facing the lever 110.

In particular, in this embodiment, the intermediate member 140 is disposed between the piezoelectric vibrator 120 and the lever 110, and the force applied between the piezoelectric vibrator 120 and the intermediate member 140 can be uniform, which is beneficial for protecting the piezoelectric vibrator 120 from being damaged. Further, the connection area of the intermediate member 140 and the lever 110 is smaller than the surface area of the piezoelectric vibrator 120 facing the lever 110, so that the contact area between the whole of the piezoelectric vibrator 120 and the intermediate member 140 and the lever 110 is smaller, thereby reducing the maximum distance (i.e. the first distance L1 in the embodiment shown in fig. 1 above) between the contact area of the whole of the piezoelectric vibrator 120 and the intermediate member 140 on the lever 110 and the fulcrum 111 of the lever 110, and in the case that the first distance L1 is reduced, the lever 110 can play a greater role in amplifying vibration parameters such as vibration displacement of the piezoelectric vibrator 120, thereby enabling the vibrator 130 to have a greater vibration displacement and related vibration parameters, and the vibration motor 100 has a better vibration performance.

In summary, according to the technical solution of the embodiment, by providing the intermediate member 140 between the piezoelectric vibrator 120 and the lever 110, the piezoelectric vibrator 120 can be protected by the intermediate member 140 to improve the reliability of the piezoelectric vibrator 120, and the vibrator 130 can have larger vibration parameters such as vibration displacement, thereby improving the overall vibration performance and the vibration effect of the vibration motor 100.

As shown in fig. 4 (c), in this embodiment, the middleware 140 includes: a sheet structure 141 and a protrusion structure 142, the protrusion structure 142 being connected to the sheet structure 141 and protruding toward the lever 110, the middle member 140 being connected to the lever 110 through the protrusion structure 142 and the first adhesive layer 131, and the middle member 140 being connected to the piezoelectric vibrator 120 through the sheet structure 141 and the second adhesive layer 132.

Alternatively, in this embodiment, the protrusion structure 142 may be a hollow structure, or alternatively, may be a solid structure. Compared to the solution shown in fig. 4 (b), while the sheet-like structure 141 of the intermediate member 140 can maintain a large connecting area with the piezoelectric vibrator 120, the connecting area of the protruding structure 142 of the intermediate member 140 and the lever 110 can be further reduced, so as to further reduce the maximum distance between the whole of the piezoelectric vibrator 120 and the intermediate member 140 and the fulcrum 111 of the lever 110 (i.e., the first distance L1 in the embodiment shown in fig. 1 above). Based on the technical solution of this embodiment, the sheet structure 141 in the intermediate member 140 is beneficial to protecting the piezoelectric vibrator 120 from being damaged, and the protrusion structure 142 in the intermediate member 140 can make the lever 110 play a greater role in amplifying the vibration displacement of the piezoelectric vibrator 120, so that the vibrator 130 has a greater vibration displacement, and the overall performance of the vibration motor 100 is improved.

In some embodiments, the protrusion 142 can be directly connected to the lever 110 through the first adhesive layer 131. However, since the coupling area of the protrusion 142 toward the lever 110 is small, the coupling reliability of the protrusion 142 to the lever 110 is weak. In other embodiments, as shown in fig. 4 (c), a groove structure may be disposed in the lever 110 to fit the protruding structure 142, and the first adhesive layer 131 is disposed in the groove structure, so that the protruding structure 142 is reliably and stably fixed in the groove structure of the lever 110 through the first adhesive layer 131, and the use reliability of the entire vibration motor 100 is improved. In addition, the arrangement of the groove structure in the lever 110 can also facilitate the installation of the intermediate member 140 on the lever 110 through the protrusion structure 142, thereby improving the manufacturing efficiency of the vibration motor 100.

It should be noted that the embodiments shown in fig. 4 (a) to (c) above can be applied to the vibration motor 100 shown in fig. 2, or can also be applied to the vibration motor 100 shown in fig. 3.

Alternatively, for the vibration motor 100 shown in fig. 2, the piezoelectric vibrator 120 is located on a side of the lever 110 away from the touch interface of the touch pad in the third direction z. In order to reduce the thickness space required to be occupied by the piezoelectric vibrator 120 in the third direction z, the piezoelectric vibrator 120 may be directly connected to the lever 110 through the first adhesive layer 131, or may be connected to the recess 112 provided in the third direction z of the lever 110, using the embodiment shown in fig. 4 (a). Of course, in order to optimize the vibration effect of vibration motor 100, the embodiment shown in fig. 4 (b) or (c) may be used to improve the vibration performance of vibrator 130 at the expense of a certain thickness space.

Alternatively, for the vibration motor 100 shown in fig. 3, the piezoelectric vibrator 120 is located on either side of the lever 110 in the first direction x. The piezoelectric vibrator 120 has a relatively sufficient space in the first direction x without taking up an additional thickness space. Therefore, in this case, the embodiments shown in fig. 4 (b) or (c) may be prioritized, and the vibration performance of the vibrator 130 may be improved to optimize the vibration effect of the vibration motor 100.

Fig. 5 shows a partial schematic view of another vibration motor 100 provided in an embodiment of the present application, in a case where the piezoelectric vibrator 120 is located on either side of the lever 110 in the first direction x.

As shown in fig. 5, in the embodiment of the present application, the vibration motor 100 further includes: a support 150, the support 150 being connected to a side of the piezoelectric vibrator 120 away from the lever 110 in the first direction x. Alternatively, the supporter 150 may be connected to the piezoelectric vibrator 120 by a glue layer. When the support member 150 is supported and disposed on one side of the piezoelectric vibrator 120 away from the lever 110 in the first direction x, the support member 150 can perform a good supporting and stabilizing function on the piezoelectric vibrator 120, and one side of the piezoelectric vibrator 120 close to the lever 110 in the first direction x can perform a relatively effective power input on the lever 110, so as to improve the overall vibration performance of the vibration motor 100.

Optionally, in the present embodiment, the supporting member 150 includes, but is not limited to, a metal sheet. The dimension of the support 150 in the second direction y is greater than or equal to the dimension of the piezoelectric vibrator 120 in the second direction y, so that the support 150 can provide a good support effect for the piezoelectric vibrator 120, thereby further optimizing the vibration performance of the vibration motor 100 as a whole.

Alternatively, in some embodiments, the support member 150 may be an elastic member, for example, the support member 150 may be a metal sheet capable of elastic deformation. When the piezoelectric vibrator 120 generates contraction and extension vibration in the first direction x, the piezoelectric vibrator 120 can drive the elastic member connected thereto to generate bending vibration in the first direction x, and therefore, the whole of the elastic member and the piezoelectric vibrator 120 can generate larger initial displacement in the first direction x, so as to improve the vibration displacement of the vibrator 130, and thus improve the vibration performance of the whole vibration motor 100.

As shown in fig. 5, the elastic member may alternatively have a size in the second direction y larger than that of the piezoelectric vibrator 120. In this case, the elastic member may wrap the piezoelectric vibrator 120 in the second direction y. By the technical solution of this embodiment, the size of the elastic member in the second direction y is increased, and the elasticity of the elastic member as a whole can be increased, so as to further enhance the initial displacement of the elastic member and the piezoelectric vibrator 120 as a whole in the first direction x, and further improve the vibration effect of the vibration motor 100.

Alternatively, the size of the piezoelectric vibrator 120 in the second direction y may be larger than the size of the piezoelectric vibrator 120 in other directions (e.g., the first direction x and the third direction z). In this case, the elastic member can be driven well by the extension and contraction of the piezoelectric vibrator 120, so that the elastic member has a larger bending vibration deformation in the first direction x. With the technical solution of this embodiment, the whole of the elastic member and the piezoelectric vibrator 120 can generate a larger initial displacement in the first direction x, and thus the vibration effect of the vibration motor 100 can be further improved.

On the basis of the embodiment shown in fig. 5, fig. 6 shows a schematic enlarged view of the region where the piezoelectric vibrator 120 is located in the vibration motor 100 provided in the embodiment of the present application.

As shown in fig. 6, in the present embodiment, the piezoelectric vibrator 120 may be connected to the supporter 150 through the third adhesive layer 133.

In addition, in the embodiment shown in fig. 6, the vibration motor 100 may further include, in addition to the supporting member 150 and the third glue layer 133: the middle part 140, the middle part 140 may include a protrusion 142 and a sheet-like structure 141, wherein the protrusion 142 may be a hollow protrusion formed by protruding a central portion of the sheet-like structure 141 toward the lever 110. The piezoelectric vibrator 120 may be connected to the sheet structure 141 of the middle member 140 through the second adhesive layer 132, and the protrusion structure 142 of the middle member 140 is connected to the lever 110 through the first adhesive layer 131.

Since the piezoelectric vibrator 120 in the embodiment of the present application has a larger size in the second direction y, the piezoelectric vibrator 120 is connected to the lever 110 through the protrusion structure 142 in the intermediate member 140, and it is possible to avoid that the piezoelectric vibrator 120 is away from the fulcrum 111 in the lever 110 by a larger distance, which affects the amplification effect of the lever 110 on the vibration displacement of the piezoelectric vibrator 120.

By combining the arrangement of the middle member 140 and the supporting member 150 in the embodiment shown in fig. 6, the vibration performance of the vibrator 130 can be optimized to a greater extent, so as to enhance the vibration effect of the vibration motor 100 to a greater extent.

Based on the vibration motor 100 shown in fig. 2, fig. 7 shows an exploded schematic structure diagram of another vibration motor 100 provided in the embodiment of the present application.

As shown in fig. 7, in the embodiment of the present application, the piezoelectric vibrator 120 is located on a side of the lever 110 away from the touch interface of the touch pad in the third direction z. In the third direction z, the lever 110 is provided with a recess which can be used to accommodate at least part of the piezoelectric vibrator 120. The piezoelectric vibrator 120 may be connected to a recess in the lever 110 by a glue layer (not shown).

In order to enable the piezoelectric vibrator 120 to be connected to external electrical components, an electrical connection 121 is provided on the piezoelectric vibrator 120, and the electrical connection 121 may be connected to electrodes of the piezoelectric vibrator 120 and an external control circuit. By way of example, the electrical connection 121 includes, but is not limited to, a Flexible Printed Circuit (PFC), or a solder wire, or the like.

In addition, as shown in fig. 7, in the embodiment of the present application, a support portion 160 is provided at the fulcrum 111 of the lever 110, the support portion 160 includes a fixed end 161 and a rotating end 162, the rotating end 162 is connected to the lever 110, and the rotating end 162 is configured to rotate in the axial direction of the support portion 160 following the vibration of the piezoelectric vibrator 120.

Alternatively, in some embodiments, the support 160 may be a bearing. Specifically, in this embodiment, the inner ring or the outer ring in the bearing may be regarded as the fixed end 161 and the rotating end 162, respectively, and the inner ring and the outer ring are connected in a sliding or rolling manner.

As an example, as shown in fig. 7, the support portion 160 may be a rolling bearing with balls or other types of rolling elements disposed between an inner ring and an outer ring thereof. The fixed end 161 may be an inner ring of a rolling bearing, the rotating end 162 is an outer ring of the rolling bearing, the inner ring may be connected and fixed to other fixed components in the vibration motor 100 through a first fixing glue 1611, and the outer ring may also be connected and fixed to the fulcrum 111 of the lever 110 through a second fixing glue 1621.

Alternatively, in another example, the fixed end 161 may be an outer ring of a rolling bearing, and correspondingly, the rotating end 162 may be an inner ring of a rolling bearing, the outer ring may be connected and fixed to other fixed components in the vibration motor 100 by a first fixing glue 1611, and the inner ring may be connected and fixed to the fulcrum 111 of the lever 110 by a second fixing glue 1621.

It is understood that the supporting portion 160 may be other types of bearings besides the rolling bearing shown in fig. 7, for example, the supporting portion 160 may also be a sliding bearing, etc. Alternatively, in other embodiments, the supporting portion 160 may be a rotating body other than a bearing, and it is only necessary that the rotating end 162 of the supporting portion 160 connected to the lever 110 can rotate following the vibration of the piezoelectric vibrator 120, and the specific type of the supporting portion 160 is not limited in the embodiments of the present application.

With the technical solution of this embodiment, the supporting portion 160 can play a good fulcrum role in the lever 110, so that the lever 110 can play a good amplifying role in the vibration parameter of the piezoelectric vibrator 120.

With continued reference to fig. 7, in the present embodiment, the vibration motor 100 further includes: and a case including a top case 171 and a bottom case 172, the top case 171 and the bottom case 172 being mutually covered to form an accommodating space for accommodating the lever 110, the piezoelectric vibrator 120, and the vibrator 130.

The case formed by the top case 171 and the bottom case 172 may protect important parts in the vibration motor 100, and may perform a force value transmission function on the vibration generated by the vibrator 130, so that the vibration generated by the vibrator 130 in the vibration motor 100 is transmitted to an external part through the case.

Optionally, the material of the housing includes, but is not limited to: stainless steel, aluminum alloy or injection molding and other materials, and has high stability and good force value conductivity.

In the embodiment of the present application, in order to make the piezoelectric vibrator 120 perform reliable and stable force value transmission to the lever 110, the piezoelectric vibrator 120 is adhered to the bottom case 172 by the adhesive 122, which includes but is not limited to: epoxy, thermosetting adhesive, ultraviolet (UV) curable adhesive, double-sided adhesive, conductive adhesive, or the like.

In addition, the fixed end 161 of the supporting portion 160 may also be fixed on the bottom case 172 by a first fixing glue 1611, so that the fixed end 161 of the supporting portion 160 has high stability. Optionally, the first fixing glue 1611 and the second fixing glue 1621 include, but are not limited to: epoxy, thermosetting glue, UV curing glue or double sided glue etc.

With continued reference to fig. 7, in the present embodiment, the vibration motor 100 further includes: and the elastic sheet mechanism 180, wherein the elastic sheet mechanism 180 is connected between the vibrator 130 and the housing, and the elastic sheet mechanism 180 is used for transmitting the vibration of the vibrator 130 to the housing.

Alternatively, as shown in fig. 7, the elastic sheet mechanisms 180 may be symmetrically disposed on two sides of the vibrator 130 in the first direction x. The elastic sheet mechanism 180 may be used to transmit the vibration of the vibrator 130 to the housing, and may also be used to support the vibrator 130 in the first direction x, so that the vibrator 130 may be suspended between the top case 171 and the bottom case 172.

Optionally, the material of the spring mechanism 180 includes but is not limited to: spring steel, stainless steel, alloys, and the like. The elastic sheet mechanism 180 may be formed by a stamping process, and the elastic sheet mechanism 180 may be connected to the vibrator 130 by laser welding.

With continued reference to fig. 7, in the present embodiment, the vibration motor 100 further includes: and a damping rubber 190, the damping rubber 190 being located between the vibrator 130 and the spring mechanism 180, the damping rubber 190 being configured to damp the vibrator 130 when the piezoelectric vibrator 120 stops vibrating.

Optionally, the damping glue 190 includes, but is not limited to: double sided tape, silicone, foam, and the like. By arranging the damping rubber 190 between the vibrator 130 and the elastic sheet mechanism 180, when the piezoelectric vibrator 120 stops vibrating, the vibrator 130 can also stop vibrating quickly, and the vibration tactile feedback to the user is further optimized.

Fig. 8 shows an exploded schematic structure diagram of another vibration motor 100 provided in the embodiment of the present application.

As shown in fig. 8, in the embodiment of the present application, the vibration motor 100 may also include: a lever 110, a piezoelectric vibrator 120, and a vibrator 130. Compared with the technical solution in fig. 7 in which the piezoelectric vibrator 120 and the vibrator 130 are located on the same side of the fulcrum 111 of the lever 110, in the embodiment shown in fig. 8, the piezoelectric vibrator 120 and the vibrator 130 are respectively located on two sides of the fulcrum 111 of the lever 110. Specifically, the piezoelectric vibrator 120 and the vibrator 130 are respectively located on both sides of the fulcrum 111 in the second direction y.

In the embodiment of the present application, in addition to the difference of the above positional relationship, other related technical solutions of the lever 110, the piezoelectric vibrator 120, and the vibrator 130 may refer to the description of the above embodiment, and are not described in detail herein.

Specifically, in the case where the piezoelectric vibrator 120 and the vibrator 130 are located on the same side of the fulcrum 111 of the lever 110, the second distance L2 between the vibrator 130 and the fulcrum 111 may include the first distance L1 between the piezoelectric vibrator 120 and the fulcrum 111, that is, the first distance L1 between the piezoelectric vibrator 120 and the fulcrum 111 is located in the second distance L2 between the vibrator 130 and the fulcrum 111. In this case, the piezoelectric vibrator 120 and the vibrator 130 can be reasonably arranged by fully utilizing the size of the lever 110, and the space occupied by the lever 110 and the vibration motor 100 where the lever 110 is located is reduced under the condition that the vibration displacement of the vibrator 130 is ensured to have a large amplification factor.

In addition, in addition to the lever 110, the piezoelectric vibrator 120, and the vibrator 130, in the embodiment of the present application, the vibration motor 100 may further include: a support part 160 at the fulcrum 111 of the lever 110, a housing (including a top case 171 and a bottom case 172), a spring mechanism 180, and a damping paste 190. The technical solution of each part may be the same as that of the embodiment shown in fig. 7, and is not described here again.

Based on the vibration motor 100 shown in fig. 3, fig. 9 shows an exploded schematic structure diagram of another vibration motor 100 provided in an embodiment of the present application.

As shown in fig. 9, in the embodiment of the present application, the vibration motor 100 may include: the lever 110, the piezoelectric vibrator 120, the vibrator 130, the support portion 160 at the fulcrum 111 of the lever 110, the case (including the top case 171 and the bottom case 172), the spring mechanism 180, and the damping paste 190.

Specifically, as shown in fig. 9, the piezoelectric vibrator 120 is located on either side of the lever 110 in the first direction x. The lever 110 may be provided with a recess in the first direction x, a first end of the piezoelectric vibrator 120 in the first direction x may be directly and fixedly disposed in the recess through an adhesive layer, and a second end of the piezoelectric vibrator 120 in the first direction x may be provided with an electrode of the piezoelectric vibrator 120. The electrodes of the piezoelectric vibrator 120 may be connected to an electrical connection member 121 through a conductive paste 124, wherein the electrical connection member 121 may be a Flexible Printed Circuit (FPC). Optionally, in order to improve the stability and reliability of the FPC, the FPC is correspondingly provided with a reinforcing plate 123. The reinforcing plate 123 is adhered to the bottom case 172 through the adhesive 122, so as to fix the FPC and the piezoelectric vibrator 120 to the bottom case 172.

Alternatively, as shown in fig. 9, in the present embodiment, the top case 171 is provided with an opening at a position corresponding to the piezoelectric vibrator 120 to avoid the piezoelectric vibrator 120. By providing the open hole in the top case 171, the piezoelectric vibrator 120 can be accommodated with the thickness of the top case 171, thereby reducing the overall thickness of the vibration motor 100.

Of course, in an alternative embodiment, the top case 171 may not have an opening, and the top case 171 may protect the components such as the piezoelectric vibrator 120 and improve the reliability of the vibration motor 100 in use.

Except that the above-mentioned related technical solutions of the piezoelectric vibrator 120 and the top case 171 are different from the embodiment shown in fig. 7, in the embodiment of the present application, the related technical solutions of the supporting portion 160, the elastic sheet mechanism 180, the damping rubber 190, and the like may be the same as the technical solution of the embodiment shown in fig. 7, which may be specifically referred to the above description, and are not described herein again.

Based on the vibration motor 100 shown in fig. 5 and 6, fig. 10 and 11 show schematic structural exploded views of another two vibration motors 100 provided in the embodiments of the present application.

As shown in fig. 10 and 11, in the embodiment of the present application, the vibration motor 100 may include: the piezoelectric vibrator 120, the vibrator 130, the middle member 140, the support member 150, the support portion 160 at the fulcrum 111 of the lever 110, the case (including the top case 171 and the bottom case 172), the spring mechanism 180, and the damping paste 190.

Specifically, in the present embodiment, the piezoelectric vibrator 120 is located on either side of the lever 110 in the first direction x. The piezoelectric vibrator 120 is connected to the lever 110 through an intermediate member 140. The middle part 140 includes a sheet-shaped structure 141 and a protrusion structure 142, the protrusion structure 142 may be a hollow protrusion structure formed by protruding the central portion of the sheet-shaped structure 141 toward the lever 110, and the protrusion structure 142 may be connected to the lever 110 through the first adhesive layer 131. Optionally, a groove structure is formed in the lever 110 to fit the protrusion structure 142, and the first adhesive layer 131 is disposed in the groove structure, so as to stably and reliably achieve the interconnection between the intermediate member 140 and the lever 110.

On this basis, the intermediate member 140 may be connected to the piezoelectric vibrator 120 through the second adhesive layer 132, and the size of the piezoelectric vibrator 120 in the second direction y may be larger than the size of the second adhesive layer 132 and the intermediate member 140 in the second direction y. The piezoelectric vibrator 120 is provided with an electrical connection member 121 at one side thereof in the third direction z to electrically connect the piezoelectric vibrator 120 with an external electrical component.

In addition to the intermediate member 140, the vibration motor 100 in the embodiment of the present application further includes: the support member 150, the piezoelectric vibrator 120 is provided with a third glue layer 133 on a side of the piezoelectric vibrator 120 away from the lever 110 in the first direction x, and the support member 150 is connected to the piezoelectric vibrator 120 through the third glue layer 133.

Alternatively, as shown in fig. 10, the size of the support 150 in the second direction y may be the same as the size of the piezoelectric vibrator 120 in the second direction y. The support 150 is provided with a fixing paste 151 on a side of the support 150 away from the piezoelectric vibrator 120 in the first direction x, and the fixing paste 151 extends along the second direction y to at least partially cover a side of the support 150 away from the piezoelectric vibrator 120 in the first direction x and at least partially cover both ends of the support 150 in the second direction y. The fixing glue 151 is used to fixedly connect the supporting member 150 to the bottom case 172, so that the supporting member 150 has good fixing stability.

Alternatively, as shown in fig. 11, the supporting member 150 may be an elastic member, and the size of the elastic member in the second direction y may be larger than the size of the piezoelectric vibrator 120 in the second direction y. When the supporting member 150 is an elastic member, the elastic member and the piezoelectric vibrator 120 as a whole can generate a large degree of bending vibration in the first direction x, and thus generate a large vibration displacement in the first direction x. In order to fix the elastic member, fixing glue 151 is disposed at two ends of the elastic member in the second direction y, and the fixing glue 151 can stably and reliably fix the elastic member to the bottom case 172.

Similar to the embodiment shown in fig. 9, the top case 171 may also be provided with an opening at a position corresponding to the piezoelectric vibrator 120 to avoid the piezoelectric vibrator 120 in the embodiment shown in fig. 10 and 11 of the present application.

Except that the above-mentioned technical solutions of the piezoelectric vibrator 120, the middle piece 140, the supporting piece 150, and the top case 171 are different from the embodiment shown in fig. 7, in the embodiment of the present application, the technical solutions of the supporting portion 160, the elastic piece mechanism 180, the damping glue 190, and other components may be the same as the technical solution of the embodiment shown in fig. 7, which may be referred to the above description, and are not described herein again.

Fig. 12 shows a schematic structural diagram of a touch pad 10 provided in an embodiment of the present application. Alternatively, the touch panel 10 may be a schematic cross-sectional view along the xz direction.

As shown in fig. 12, the touch panel 10 includes: a cover plate 101, a circuit board 102, a pressure detection device 103, and a vibration motor 100.

Specifically, the circuit board 102 is disposed below the cover 101, and a touch sensing electrode (not shown in fig. 12) is disposed on the circuit board for sensing a touch of a user on the cover 101. The pressure detection device 103 is disposed below the circuit board 102 and is used for detecting the pressure applied by the user on the cover plate 101. The vibration motor 100 is disposed under the circuit board 102 for generating vibration according to pressure applied by a user on the cover plate to provide tactile feedback of the vibration to the user touching.

The vibration motor 100 may be the vibration motor described in any of the above embodiments, referring to the vibration motor shown in fig. 1, which may specifically include: a lever 110, a piezoelectric vibrator 120, and a vibrator 130. The piezoelectric vibrator 120 is positioned at the power input end of the lever 110 and is used for receiving an electric signal indicating the pressure applied by a user on the cover plate 101 to generate vibration, and the distance between the piezoelectric vibrator 120 and the fulcrum 111 of the lever 110 is a first distance L1; the vibrator 130 is located at the power output end of the lever 110, the distance between the vibrator 130 and the fulcrum 111 of the lever 110 is a second distance L2, wherein the second distance L2 is greater than the first distance L1, and the lever 110 is used for amplifying the vibration displacement of the piezoelectric vibrator 120, so that the vibrator 130 vibrates with the amplified vibration displacement and provides tactile feedback of the vibration to the user.

In the embodiment of the present application, the cover 101 has a touch interface capable of facing a user for receiving a touch of a finger or other objects of the user on the cover 101. The cover plate 101 includes, but is not limited to, a glass cover plate or a cover plate of other material.

The circuit board 102 is disposed below the cover plate 101, that is, the circuit board 102 is disposed on a side of the cover plate 101 away from the touch interface. As an example, as shown in fig. 12, the circuit board 102 may be fixedly attached to the lower surface of the cap plate 101 by a glue layer. The Circuit Board 102 includes a Printed Circuit Board (PCB) Board. The circuit board 102 may be provided with touch-sensitive electrodes and other related electrical components, through which the touch position of the user on the cover 101 can be determined. As an example, when a user finger touches the cover 101, the user finger and the touch sensing electrode may form a capacitance signal, and a touch position of the user finger on the cover 101 may be determined according to the capacitance signal.

Alternatively, the touch sensing electrodes in the embodiment of the present application may be electrically connected to a processor (or may also be referred to as a controller) through the circuit board 102, and the processor is configured to receive signals (e.g., capacitance signals) sensed by the touch sensing electrodes so as to determine a touch position of a user on the cover plate 101. In some embodiments, the processor may be a dedicated processor of the touch panel 10, or in another embodiment, the processor may also be a processor in the electronic device in which the touch panel 10 is located, for example, a master processor of the electronic device may be reused as the processor in the embodiments of the present application.

In addition, the touch panel 10 further includes a pressure detection device 103 and a vibration motor 100. The pressure detection device 103 and the vibration motor 100 are also disposed below the circuit board 102. Alternatively, as shown in fig. 12, the vibration motor 100 may be connected to the lower surface of the circuit board 102 by a glue layer, so that the vibration of the vibration motor 100 can be effectively transmitted to the user touching the cover plate 101 through the circuit board 102 and the cover plate 101.

Alternatively, the pressure detection device 103 includes, but is not limited to, a pressure sensor, which may be, for example, a strain gauge or other type of sensor. To facilitate the installation of the pressure detection device 103 under the circuit board 102, the pressure detection device 103 may be fixedly disposed on a bracket 104, and the bracket 104 may be connected to the circuit board 102 through a connection layer 106.

By way of example, a reinforcing plate 105 is further disposed below the circuit board 102, and the bracket 104 may be connected to the reinforcing plate 105 through a connecting layer 106. The reinforcing plate 105 and the vibration motor 100 may be disposed side by side below the circuit board 102.

Alternatively, the connection layer 106 includes, but is not limited to, an elastic connection layer, which may be, for example, a silicone rubber, which not only can perform a connection function, but also can perform a damping function on the vibrating vibration motor 100, so that the vibration motor 100 can stop vibrating quickly.

When a user touches or presses the cover plate 101 of the touch pad 10, the pressure can be transmitted to the pressure detection device 103 through the cover plate 101, the circuit board 102, the connection layer 106 and the bracket 104, so that the pressure detection device 103 detects the pressure applied on the cover plate 101 by the user. Further, the vibration motor 100 may provide a vibratory tactile feedback to a user touching the cover plate 101 based on the magnitude of the pressure.

Alternatively, both the vibration motor 100 and the pressure detection device 103 may be connected to a processor, the pressure detection device 103 transmits a pressure value detected by the pressure detection device to the processor, and the processor processes the pressure value and then sends a relevant electrical signal to the vibration motor 100, so as to start or stop the vibration motor 100 from vibrating. Specifically, the piezoelectric vibrator 120 in the vibration motor 100 can receive the relevant electrical signal sent by the processor to start or stop vibrating, so as to drive the vibrator 130 to start or stop vibrating.

As an example, after receiving the pressure value sent by the pressure detection device 103, the processor may determine the relationship between the pressure value and a preset threshold, and when the pressure value is greater than a first preset threshold, the processor sends a first electrical signal to the vibration motor 100 to instruct the vibration motor 100 to start vibrating, and when the pressure value is less than a second preset threshold, the processor sends a second electrical signal to the vibration motor 100 to instruct the vibration motor 100 to stop vibrating.

Alternatively, the processor in the above example may be the same processor as the processor for receiving the touch sensing electrode signal to determine the touch position of the user on the cover plate 101.

In addition, in the touch pad 10 provided in the embodiment of the present application, other technical solutions of the vibration motor 100 can be referred to the related description of the embodiments shown in fig. 1 to fig. 11, and redundant description is not repeated here.

In the technical solution of the embodiment of the present application, a touch pad is provided, where the touch pad includes a touch sensing electrode and a pressure detection device, and can simultaneously implement touch detection and pressure detection of a user on a cover plate, and at the same time, the touch pad further includes a vibration motor, and the vibration motor can generate vibration according to pressure applied by the user on the cover plate to provide a vibrating tactile feedback to the user, so that the touch pad can implement multiple functions to improve user experience. Furthermore, in the touch control panel, the lever, the piezoelectric vibrator and the vibrator are utilized to construct and obtain the vibration motor, and the vibration motor can have the advantages of low cost, small volume, high vibration frequency and the like of the piezoelectric vibrator. Meanwhile, the vibration motor can amplify relevant parameters such as vibration displacement of the piezoelectric vibrator by utilizing the lever, so that the vibrator has larger vibration displacement, and the vibration is transmitted to the outside of the touch pad through the vibrator, so that a user pressing on the touch pad can have more obvious tactile feedback of vibration sense.

The embodiment of the present application also provides an electronic device, which includes the touch pad 10 in the embodiment of the present application, where the touch pad 10 is used to provide pressure detection and tactile feedback functions for the electronic device.

By way of example and not limitation, the electronic device in the embodiments of the present application may be a portable or mobile computing device such as a terminal device, a mobile phone, a tablet computer and its accessory keyboard, a notebook computer, a desktop computer, a game device, an in-vehicle electronic device or a wearable smart device, and other electronic devices such as an electronic database, an automobile, and an Automated Teller Machine (ATM). This wearing formula smart machine includes that the function is complete, the size is big, can not rely on the smart mobile phone to realize complete or partial functional equipment, for example smart watch or intelligent glasses etc to include and only concentrate on a certain type of application function and need and other equipment like the equipment that the smart mobile phone cooperation was used, for example all kinds of intelligent bracelet, intelligent ornament etc. that carry out the physical sign monitoring.

It should be noted that, without conflict, the embodiments and/or technical features in the embodiments described in the present application may be arbitrarily combined with each other, and the technical solutions obtained after the combination also fall within the protection scope of the present application.

It should be understood that the specific examples in the embodiments of the present application are for the purpose of promoting a better understanding of the embodiments of the present application, and are not intended to limit the scope of the embodiments of the present application, and that various modifications and variations can be made by those skilled in the art based on the above embodiments and fall within the scope of the present application.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A touch pad, comprising:

a cover plate;

the circuit board is arranged below the cover plate, and a touch sensing electrode is arranged on the circuit board and used for sensing the touch of a user on the cover plate;

the pressure detection device is arranged below the circuit board and used for detecting the pressure applied on the cover plate by the user;

a vibration motor disposed below the circuit board for generating vibration according to pressure applied by the user on the cover plate to provide tactile feedback of the vibration to the user;

wherein the vibration motor includes: a lever;

the piezoelectric vibrator is positioned at the power input end of the lever and used for receiving an electric signal indicating the pressure applied on the cover plate by the user so as to generate vibration, and the distance between the piezoelectric vibrator and the fulcrum of the lever is a first distance;

the vibrator is located at the power output end of the lever, the distance between the vibrator and the fulcrum of the lever is a second distance, the second distance is larger than the first distance, and the lever is used for amplifying the vibration displacement of the piezoelectric vibrator so that the vibrator vibrates with the amplified vibration displacement and provides the vibration touch feedback for the user.

2. The trackpad of claim 1, wherein the piezoelectric vibrator is configured to vibrate in a first direction parallel to the cover plate;

when the piezoelectric vibrator is static, the lever extends along a second direction which is perpendicular to the first direction and parallel to the cover plate;

wherein, the oscillator and/or the lever are in a plate-shaped structure parallel to the cover plate.

3. The trackpad of claim 2, wherein the piezoelectric vibrator is located on a side of the lever that is away from the touch interface of the cover plate in a third direction, the third direction being perpendicular to the first direction and the second direction; or,

the piezoelectric vibrator is located on either side of the lever in the first direction.

4. The trackpad of claim 3, wherein the lever has a recess formed therein, at least a portion of the piezoelectric vibrator being located in the recess.

5. The touch pad of any one of claims 1-4, wherein the vibration motor further comprises:

the piezoelectric vibrator is connected to the lever through the adhesive layer; and

the piezoelectric vibrator is connected to the lever through the intermediate piece, and the connection area of the intermediate piece and the lever is smaller than the surface area of the piezoelectric vibrator facing the lever.

6. The trackpad of claim 5, wherein the middleware comprises: the protruding structure is connected to the sheet structure and protrudes towards the lever;

the intermediate member is connected to the lever through the protrusion structure, and the intermediate member is connected to the piezoelectric vibrator through the sheet structure.

7. The touch pad of claim 6, wherein the lever has a groove structure disposed therein that engages the protrusion structure.

8. The touch panel according to any one of claims 2 to 7, wherein the piezoelectric vibrator is located on either side of the lever in the first direction, and the vibration motor further comprises: a support connected to a side of the piezoelectric vibrator away from the lever in the first direction;

the support member is an elastic member, and the elastic member and the piezoelectric vibrator jointly form bending vibration in the first direction.

9. The touch pad of claim 8, wherein the dimension of the support in the second direction is greater than or equal to the dimension of the piezoelectric vibrator in the second direction.

10. The touch panel according to any one of claims 1 to 9, wherein a support portion is provided at a fulcrum of the lever, the support portion includes a fixed end and a rotating end, the rotating end is connected to the lever, and the rotating end is configured to rotate in an axial direction of the support portion following vibration of the piezoelectric vibrator;

wherein the support part is a bearing.

11. The touch pad of any one of claims 1-10, wherein the vibration motor further comprises:

a housing including a top case and a bottom case that cover each other to form an accommodation space for accommodating the lever, the piezoelectric vibrator, and the vibrator; and

the elastic sheet mechanism is connected between the vibrator and the shell and used for transmitting the vibration of the vibrator to the shell.

12. The touch panel according to any one of claims 1 to 11, wherein the piezoelectric vibrator and the vibrator are located on the same side of a fulcrum of the lever; or,

the piezoelectric vibrator and the vibrator are located on two sides of a fulcrum of the lever.

13. The touch panel according to any one of claims 1 to 12, wherein the weight of the vibrator is greater than the weight of the lever.

14. The touch panel according to any one of claims 1 to 13, wherein the piezoelectric vibrator is made of a piezoelectric ceramic, and the piezoelectric ceramic includes any one of: the piezoelectric ceramic may be a single-layer piezoelectric ceramic, a multilayer piezoelectric ceramic, a piezoelectric ceramic in which the vibration direction and the electric field direction are parallel to each other, or a piezoelectric ceramic in which the vibration direction and the electric field direction are perpendicular to each other.

15. A vibration motor for use with a touch pad, the vibration motor for providing vibratory tactile feedback to a user touching the touch pad, the vibration motor comprising:

a lever;

the piezoelectric vibrator is positioned at the power input end of the lever, and the distance between the piezoelectric vibrator and the fulcrum of the lever is a first distance;

the vibrator is located at the power output end of the lever, the distance between the vibrator and the fulcrum of the lever is a second distance, the second distance is larger than the first distance, and the lever is used for amplifying the vibration displacement of the piezoelectric vibrator so that the vibrator vibrates with the amplified vibration displacement.

16. The vibration motor of claim 15, wherein the piezoelectric vibrator is configured to vibrate in a first direction parallel to the touch pad;

when the piezoelectric vibrator is static, the lever extends along a second direction which is perpendicular to the first direction and parallel to the touch pad.

17. The vibration motor according to claim 16, wherein the piezoelectric vibrator is located on a side of the lever away from the touch interface of the touch pad in a third direction, the third direction being perpendicular to the first direction and the second direction; or,

18. The vibration motor according to any one of claims 15 to 17, further comprising: the piezoelectric vibrator is connected to the lever through the intermediate piece, and the connection area of the intermediate piece and the lever is smaller than the surface area of the piezoelectric vibrator facing the lever.

19. A vibration motor as claimed in claim 18, wherein said intermediate member comprises: the protruding structure is connected to the sheet structure and protrudes towards the lever;

20. An electronic device, comprising: the trackpad of any one of claims 1 to 14, the trackpad being for providing pressure detection and haptic feedback functionality to the electronic device.