Piezoelectric tactile feedback module

Abstract

The utility model discloses a piezoelectric type tactile feedback module, which relates to the technical field of tactile feedback modules, and comprises a touch pad, a piezoelectric type tactile feedback module arranged at the bottom of the touch pad, a plurality of pressing assemblies symmetrically arranged in a surrounding manner, and a plurality of pressing assemblies arranged on the bottom of the touch pad and arranged on the bottom of the piezoelectric type tactile feedback module, and an adhesive layer is arranged between the piezoelectric type tactile feedback module and the touch pad. The pressing assemblies are fixedly arranged at the bottoms of the touch panel pairs and are in contact fit with the outer side walls of the piezoelectric type tactile feedback modules, the pressing assemblies are used for fixing the positions of the piezoelectric type tactile feedback modules, and the synchronous pressing mechanism is arranged on the outer sides of the pressing assemblies and is used for synchronously pushing the pressing assemblies. After the feedback assembly and the touch panel are bonded, the periphery of the feedback module can be extruded and limited, the feedback module is prevented from deviating from the touch panel as much as possible after being pressed for a long time, and it is guaranteed that the continuous and stable touch feedback effect can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of tactile feedback module, concretely relates to a piezoelectric tactile feedback module. BACKGROUND

[0002] The piezoelectric tactile feedback module is a kind of device that utilizes the inverse piezoelectric effect of piezoelectric material, converts electrical signal into mechanical vibration, to provide tactile feedback for user.

[0003] According to the patent file with the announcement number CN215298189U, a piezoelectric tactile feedback module is disclosed, which is pressed by pressing the pressure block on both sides, the pressure block is extruded by the inclined groove buckle, the buckle is separated from the clamping groove on the body of the tactile feedback module, the clock spring drives the rotating shaft to rotate through the first cavity, the body of the tactile feedback module is rotated 90 degrees to the outside, which simplifies the work flow of manual disassembly bolt, facilitates the maintenance of internal electronic components, and improves work efficiency.

[0004] However, the existing piezoelectric tactile feedback module is generally arranged at the bottom of the touch screen and bonded with the touch screen, when the touch screen is pressed for a long time, the adhesive material connecting the touchpad and the piezoelectric tactile feedback module may gradually lose adhesion, resulting in loosening between the two, so that effective and stable feedback cannot be obtained after subsequent pressing. UTILITY MODEL CONTENT

[0005] In view of the above problems existing in the piezoelectric tactile feedback module, the utility model is proposed.

[0006] Therefore, the utility model aims to provide a piezoelectric tactile feedback module, which solves the problem that the tactile feedback module deviates from the position after bonding with the touch screen due to continuous pressing, and reduces the feedback effect.

[0007] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0008] A piezoelectric tactile feedback module, comprising a touchpad and a piezoelectric tactile feedback module arranged at the bottom of the touchpad, an adhesive layer is arranged between the piezoelectric tactile feedback module and the touchpad, and further comprising:

[0009] A plurality of pressing assemblies arranged in pairs in a symmetrical ring, fixedly arranged at the bottom of the pair of touchpads, and in contact with the outer wall of the piezoelectric tactile feedback module, the pressing assembly is used for fixing the position of the piezoelectric tactile feedback module;

[0010] Synchronous pressing mechanism, arranged on the outside of a plurality of pressing assemblies, and used for synchronously pushing a plurality of pressing assemblies.

[0011] Preferably, the pressing assembly comprises a pressing plate, the pressing plate contacts the side of the piezoelectric tactile feedback module, the end of the pressing plate is fixed with a crossbar, the wall of the crossbar is rotationally sleeved with a connecting plate, and the connecting plate is fixedly connected with the touch plate.

[0012] Preferably, the synchronous pressing mechanism comprises a pressing cap, the pressing cap is sleeved outside the plurality of pressing plates, a pressing hole is formed in the inner middle end of the pressing cap, the inner wall of the pressing hole is in contact with the pressing plate, and an extrusion positioning mechanism is arranged between the pressing cap and the side of the connecting plate.

[0013] Preferably, the extrusion positioning mechanism comprises a positioning rod, the positioning rod is slidably arranged on the side of the pressing cap, a positioning groove is formed in the side of the connecting plate and matched with the positioning rod, a spring is sleeved on the wall of the positioning rod, and the two ends of the spring are fixedly connected with the positioning rod and the pressing cap respectively.

[0014] Further, a placing groove is formed in the side of the pressing cap, and the spring is arranged in the placing groove.

[0015] Preferably, the bottom of each of the plurality of connecting plates is fixedly provided with a guide rod, and the connecting plate is slidably sleeved outside the guide rod.

[0016] Preferably, the plurality of guide rods are T-shaped guide rods.

[0017] Preferably, the inner part of the pressing cap is provided with a through hole matched with the sliding of the guide rod.

[0018] Preferably, the end of the positioning rod away from the piezoelectric tactile feedback module is provided with two symmetrically arranged pull grooves.

[0019] In the above technical scheme, the technical effects and advantages of the present application are provided:

[0020] 1. The utility model discloses a touch plate, a piezoelectric tactile feedback module, a pressing assembly and a synchronous pressing mechanism, which can extrude and limit the four sides of the feedback module after the feedback assembly is bonded with the touch plate, thereby avoiding the position deviation of the feedback module from the touch plate after long-time pressing as much as possible, and ensuring that the continuous and stable touch feedback effect can be improved.

[0021] 2. The utility model discloses a synchronous pressing mechanism and an extrusion positioning mechanism, which can determine the position of the pressing cap after the pressing cap presses the plurality of pressing plates, ensure that the positions of the plurality of pressing assemblies are fixed, and thus complete the extrusion positioning work. DRAWINGS

[0022] In order to make the technical personnel of the prior art better understand the technical scheme of the present application, the following will be further described in detail with reference to the drawings.

[0023] Figure 1 It is a schematic view of the three-dimensional structure of the utility model;

[0024] Figure 2 It is a schematic view of the side structure of the utility model;

[0025] Figure 3 It is a schematic view of the three-dimensional structure of the utility model; Figure 2 It is a schematic view of the three-dimensional structure of the utility model;

[0026] Figure 4 It is a schematic view of the three-dimensional structure of the utility model;

[0027] Figure 5 It is a schematic view of the three-dimensional structure of the utility model.

[0028] Explanation of reference signs:

[0029] 1, touch plate; 2, piezoelectric tactile feedback module; 3, adhesive layer; 4, pressing plate; 5, horizontal rod; 6, connecting plate; 7, gland; 8, positioning rod; 9, positioning groove; 10, spring; 11, guide rod; 12, pull groove; 13, pressing hole. DETAILED DESCRIPTION

[0030] In order to make the technical personnel of the prior art better understand the technical scheme of the present application, the following will be further described in detail with reference to the drawings.

[0031] The utility model discloses a piezoelectric tactile feedback module.

[0032] Embodiment 1

[0033] The utility model provides a piezoelectric tactile feedback module as shown in Figures 1-5 The piezoelectric tactile feedback module 2 is provided with an adhesive layer 3 between the piezoelectric tactile feedback module 2 and the touch plate 1, further comprising a plurality of pressing assemblies arranged in a surrounding symmetrical pair, fixedly arranged at the bottom of the pair of touch plates 1 and in contact with the outer side wall of the piezoelectric tactile feedback module 2, the pressing assembly is used for fixing the position of the piezoelectric tactile feedback module 2, and the pressing assembly comprises a pressing plate 4, the pressing plate 4 is arranged in contact with the side of the piezoelectric tactile feedback module 2, the end of the pressing plate 4 is fixedly provided with a horizontal rod 5, the rod wall of the horizontal rod 5 is rotatably sleeved with a connecting plate 6, and the connecting plate 6 is fixedly connected with the touch plate 1.

[0034] In use of the piezoelectric tactile feedback module 2, the piezoelectric tactile feedback module 2 is bonded to the top of the touchpad 1 through the adhesive layer 3 and is located between the plurality of pressing assemblies. After the piezoelectric tactile feedback module 2 is preliminarily positioned, the plurality of pressing assemblies are simultaneously driven to work, so that the plurality of pressing plates 4 are synchronously rotated under the rotating support of the crossbar 5 and the connecting plate 6 and press the piezoelectric tactile feedback module 2 located at the side. At this time, the position of the piezoelectric tactile feedback module 2 is positioned from all around, so that the piezoelectric tactile feedback module 2 is not separated from the touchpad 1 even if the touchpad 1 is pressed for a long time, thereby ensuring the use stability of the piezoelectric tactile feedback module 2.

[0035] Embodiment 2

[0036] In order to enable the plurality of pressing assemblies to work simultaneously, the embodiment 2 is based on the embodiment 1, as shown in Figures 2-3 and Figure 5 , the synchronous pressing mechanism is arranged at the outer side of the plurality of pressing assemblies and is used for synchronously pushing the plurality of pressing assemblies. The synchronous pressing mechanism comprises a pressing cover 7 which is sleeved at the outer side of the plurality of pressing plates 4. The inner middle end of the pressing cover 7 is provided with a pressing hole 13. The inner wall of the pressing hole 13 is in contact with the pressing plate 4. The pressing cover 7 and the side of the connecting plate 6 are provided with an extrusion positioning mechanism. The bottom of the plurality of connecting plates 6 is fixedly provided with a guide rod 11. The inside of the pressing cover 7 is provided with a through hole which is used for sliding the guide rod 11. The connecting plate 6 is slidably sleeved at the outer side of the guide rod 11. The plurality of guide rods 11 are T-shaped guide rods.

[0037] After the piezoelectric tactile feedback module 2 is bonded to the touchpad 1, the pressing cover 7 can be pushed under the sliding cooperation of the plurality of guide rods 11 and the through hole, so that the pressing cover 7 gradually approaches the touchpad 1 and the inner pressing hole 13 of the pressing cover 7 is in contact with the pressing plate 4. Under the continuous movement of the pressing cover 7, the pressing hole 13 synchronously extrudes the plurality of pressing plates 4, so that the plurality of pressing plates 4 can simultaneously move and extrude and position the piezoelectric tactile feedback module 2, thereby ensuring that the positioning operation is conveniently performed.

[0038] Embodiment 3

[0039] In order to determine the position of the pressing cover 7 after the pressing cover 7 moves, the embodiment 3 is based on the embodiment 1, as shown in Figures 2-4 , the extrusion positioning mechanism comprises a positioning rod 8 which is slidably arranged at the side of the pressing cover 7. The side of the connecting plate 6 is provided with a positioning groove 9 which is used for penetrating the positioning rod 8. The rod wall of the positioning rod 8 is sleeved with a spring 10. The two ends of the spring 10 are fixedly connected with the positioning rod 8 and the pressing cover 7, respectively. The side of the pressing cover 7 is provided with a placing groove. The spring 10 is arranged in the inside of the placing groove. The end of the positioning rod 8 which is away from the piezoelectric tactile feedback module 2 is provided with two symmetrically arranged pull grooves 12.

[0040] Before the pressing cap 7 moves, the positioning rod 8 can be pulled transversely through the pulling groove 12, so that the positioning rod 8 is away from the connecting plate 6, and after the pressing cap 7 continuously moves and extrudes the pressing plate 4, the positioning rod 8 is released, and under the elastic recovery of the spring 10, the positioning rod 8 quickly rebounds and is inserted into the positioning groove 9 on the side of the connecting plate 6, so that the position fixing of the pressing cap 7 is completed, and the plurality of pressing plates 4 can stably extrude and position the piezoelectric tactile feedback module 2.

[0041] The above only describes some exemplary embodiments of the present application by way of illustration, without doubt, for ordinary skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the present application.

Claims

1. A piezoelectric haptic feedback module comprising a touchpad (1) and a piezoelectric haptic feedback module (2) arranged at the bottom of the touchpad (1), characterized in that, The piezoelectric tactile feedback module (2) is provided with a glue layer (3) between the touchpad (1), and further comprises; A plurality of pressing assemblies arranged in pairs in a surrounding symmetry are fixedly arranged at the bottom of the touchpad (1) and in contact with the outer side wall of the piezoelectric tactile feedback module (2), and the pressing assemblies are used for fixing the position of the piezoelectric tactile feedback module (2); A synchronous pressing mechanism is arranged outside the plurality of pressing assemblies and is used for synchronously pushing the plurality of pressing assemblies.

2. The piezoelectric haptic feedback module of claim 1, wherein, The pressing assembly comprises a pressing plate (4) arranged in contact with the side of the piezoelectric tactile feedback module (2), and the end of the pressing plate (4) is fixedly provided with a horizontal rod (5), the rod wall of the horizontal rod (5) is rotatably sleeved with a connecting plate (6), and the connecting plate (6) is fixedly connected with the touchpad (1).

3. The piezoelectric haptic feedback module of claim 1, wherein, The synchronous pressing mechanism comprises a pressing cap (7) sleeved outside the plurality of pressing plates (4), a pressing hole (13) is formed in the inner middle end of the pressing cap (7), the inner wall of the pressing hole (13) is in contact with the pressing plate (4), and an extrusion positioning mechanism is arranged between the pressing cap (7) and the side of the connecting plate (6).

4. The piezoelectric haptic feedback module of claim 3, wherein, The extrusion positioning mechanism comprises a positioning rod (8) slidably arranged at the side of the pressing cap (7), a positioning groove (9) is formed in the side of the connecting plate (6) and matched with the positioning rod (8), a spring (10) is sleeved on the rod wall of the positioning rod (8), and the two ends of the spring (10) are fixedly connected with the positioning rod (8) and the pressing cap (7) respectively.

5. The piezoelectric haptic feedback module of claim 4, wherein, The side of the pressing cap (7) is provided with a placing groove, and the spring (10) is arranged in the inner part of the placing groove.

6. The piezoelectric haptic feedback module of claim 2, wherein, The bottom of each of the plurality of connecting plates (6) is fixedly provided with a guide rod (11), and the connecting plate (6) is slidably sleeved outside the guide rod (11).

7. The piezoelectric haptic feedback module of claim 6, wherein, Each of the plurality of guide rods (11) is a T-shaped guide rod.

8. The piezoelectric haptic feedback module of claim 3, wherein, The inner part of the pressing cap (7) is provided with a through hole matched with the sliding of the guide rod (11).

9. The piezoelectric haptic feedback module of claim 4, wherein, The end of the positioning rod (8) away from the piezoelectric tactile feedback module (2) is provided with two symmetrically arranged pull grooves (12).

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