A press actuator and a button feel detection device for button feel detection

Abstract

This utility model provides a pressing actuator and a pressing actuator device for button tactile detection. The pressing actuator includes: a contact guiding mechanism comprising a housing and a built-in guide bearing; a force transmission assembly comprising a smooth bolt, an extended guide rod, a convex ring structure, and a spring; a sensor mounting frame comprising a support frame and a mounting cover formed thereon for mounting a force sensor, the support frame being fixedly mounted on the first end face of the housing; a capacitive sensing contact disposed on the first end of the extended guide rod, the second end of the extended guide rod extending into the guide bearing after penetrating the second end face of the housing; the first end of the smooth bolt being coaxially threaded to the second end of the extended guide rod after sequentially penetrating the hollow area of ​​the force sensor and the first end face of the housing; a convex ring structure being fixedly sleeved on the smooth bolt and seated on the first end face of the housing; and a spring sleeved on the smooth bolt and abutting against the convex ring structure and the force sensor respectively. This utility model solves the problems of easy damage to the force sensor and the impact on button tactile detection results caused by the layout design of the force sensor in existing pressing actuator devices.

Description

Technical Field

[0001] This utility model belongs to the field of button feel detection, and more specifically, relates to a pressing actuator and a button feel detection device for button feel detection. Background Technology

[0002] In recent years, although more and more handheld terminal devices have been developing towards larger screens and touchscreen designs, they still inevitably need to use some physical buttons. For these handheld terminal devices, in order to ensure a good user experience, the tactile feedback of the physical buttons needs to be tested before they leave the factory.

[0003] Existing button tactile detection typically relies on automated button tactile detection devices. A typical existing device usually includes a drive unit, a pressing actuator, and a data processing unit. The pressing actuator has a contact head, within which a force sensor is installed. The working principle of this device is as follows: the drive unit applies a driving force to the pressing actuator; the pressing actuator moves towards the button on the product under test under the driving force and presses the button through the contact head; the force sensor collects relevant mechanical data during the pressing operation; the data processing unit determines the pressing force and rebound force of the button based on the collected mechanical data, and determines whether the button passes the tactile detection based on the pressing force and rebound force.

[0004] However, the applicant found that the aforementioned button feel detection device still has the following major problems:

[0005] The force sensor is built into the contact head and is very close to the front surface of the contact head. This setting causes the reaction force from the button to be directly transmitted to the force sensor. This not only makes the force sensor easy to damage, but also makes the mechanical data collected by the force sensor contain a lot of noise, which in turn affects the accuracy of the subsequent button feel detection results to a certain extent. Utility Model Content

[0006] In view of this, the present invention provides a pressing actuator and a button feel detection device for button feel detection.

[0007] According to a first aspect of the present invention, a press actuator for detecting button tactile feedback is provided. The press actuator includes a capacitive sensing contact, a force sensor, a contact guide mechanism, a force transmission component, and a sensor mounting frame.

[0008] The contact guide mechanism includes a housing and a guide bearing built into the housing;

[0009] The force transmission assembly includes a smooth bolt, an extended guide rod, a convex ring structure, and a spring;

[0010] The sensor mounting frame includes a support frame and a mounting cover formed on the support frame. The support frame is fixedly disposed on the first end face of the housing, and the force sensor is mounted in the mounting cover.

[0011] The capacitive sensing contact is disposed on the first end of the extended guide rod, and the second end of the extended guide rod extends into the guide bearing after passing through the second end face of the housing. The first end face and the second end face are disposed opposite to each other.

[0012] The first end of the optical bolt is coaxially threaded to the second end of the extended guide rod after passing through the hollow region of the force sensor and the first end face of the housing in sequence. The second end of the optical bolt is configured to always be exposed outside the force sensor.

[0013] The convex ring structure is fixedly sleeved on the optical bolt and sits on the first end face of the housing;

[0014] The spring is sleeved on the optical rod bolt and abuts against the convex ring structure and the sensing area of ​​the force sensor, respectively.

[0015] Optionally, the capacitive sensing contact is threaded to the first end of the extended guide rod.

[0016] Optionally, the capacitive sensing contact includes a capacitive sensing contact body and a threaded post disposed on the rear end of the capacitive sensing contact body.

[0017] An internal thread matching the threaded post is formed on the first end of the extended guide rod;

[0018] The pressing actuator also includes a set screw locking mechanism, which is used to fix the threaded post and the sidewall of the first end of the extended guide rod in the radial direction.

[0019] Alternatively, the convex ring structure can be implemented using a clamping ring.

[0020] Alternatively, the guide bearing may be implemented using a graphite copper bushing.

[0021] Optionally, the pressing actuator may also include a gasket;

[0022] The gasket is fitted onto the guide rod bolt and abuts against the sensing areas of the spring and the force sensor, respectively.

[0023] Optionally, the force sensor is a six-dimensional force sensor.

[0024] Alternatively, the pressing actuator can be used in conjunction with a three-axis motion mechanism having an end effector;

[0025] Mounting holes are provided on the edge portions of the support frame and the housing, and the pressing actuator is mounted on the end effector through the mounting holes.

[0026] Optionally, a wrench holder is provided on the portion of the extended guide rod located between the capacitive sensing contact and the housing.

[0027] According to a second aspect of the present invention, a button tactile detection device is provided, which includes any of the above-mentioned pressing actuators.

[0028] The beneficial effects of this utility model are as follows:

[0029] This invention discloses a press actuator for button feel detection. The force sensor is located at the distal end of a capacitive sensing contact. The reaction force exerted by the button on the capacitive sensing contact is transmitted sequentially through an extended guide rod, a smooth bolt, a convex ring structure, and a spring to the force sensor. This arrangement ensures that the reaction force from the button on the capacitive sensing contact travels a longer transmission path before reaching the force sensor. Simultaneously, the spring helps to even out the force on the force sensor, reducing significant force variations caused by vibration. Therefore, this press actuator for button feel detection effectively solves the problems of easy damage to the force sensor and the influence of button feel detection results caused by the force sensor layout design in existing button feel detection devices.

[0030] The button feel detection device of this utility model belongs to the same general inventive concept as the pressing actuator for button feel detection mentioned above, and has at least the same beneficial effects as the pressing actuator for button feel detection mentioned above, the beneficial effects of which will not be repeated here.

[0031] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0032] This invention can be better understood by referring to the following description taken in conjunction with the accompanying drawings, in which the same or similar reference numerals are used throughout the drawings to denote the same or similar parts.

[0033] Figure 1 A schematic diagram of the structure of a pressing actuator from a first perspective according to an embodiment of the present invention is shown;

[0034] Figure 2A schematic diagram of the pressing actuator from a second perspective, according to an embodiment of the present invention, is shown.

[0035] Figure 3 A schematic diagram of a pressing actuator without the housing of the contact guide mechanism is shown according to an embodiment of the present invention;

[0036] Figure 4 A schematic diagram illustrating the principle of adjusting the extension length of the capacitive sensing contact according to an embodiment of the present invention is shown. Detailed Implementation

[0037] To enable those skilled in the art to more fully understand the technical solution of this utility model, exemplary embodiments of this utility model will be described more comprehensively and in detail below with reference to the accompanying drawings. Obviously, the one or more embodiments of this utility model described below are merely one or more specific ways to implement the technical solution of this utility model, and are not exhaustive. It should be understood that other ways belonging to a general inventive concept can be used to implement the technical solution of this utility model, and it should not be limited to the embodiments described exemplary. Based on one or more embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0038] Example: Figure 1 This diagram shows a structural schematic of the pressing actuator from a first-view perspective according to an embodiment of the present invention. Figure 2 This diagram shows a second-view structural schematic of the pressing actuator according to an embodiment of the present invention. Figure 3 A schematic diagram of the structure of a pressing actuator without the housing of the contact guide mechanism according to an embodiment of the present invention is shown.

[0039] Reference Figures 1 to 3 The pressing actuator for button feel detection in this embodiment of the present invention includes a capacitive sensing contact 10, a force sensor 20, a contact guide mechanism, a force transmission component, and a sensor mounting frame;

[0040] The contact guiding mechanism includes a housing 30 and a guide bearing 40 built into the housing 30;

[0041] The force transmission assembly includes a smooth bolt 50, an extended guide rod 60, a convex ring structure 70, and a spring 80;

[0042] The sensor mounting frame includes a support frame 90 and a mounting cover 1000 formed on the support frame 90. The support frame 90 is fixedly disposed on the first end face of the housing 30, and the force sensor 20 is mounted in the mounting cover 1000.

[0043] The capacitive sensing contact 10 is disposed on the first end of the extended guide rod 60, and the second end of the extended guide rod 60 extends into the guide bearing 40 after passing through the second end face of the housing 30. The first end face and the second end face of the housing 30 are disposed opposite to each other.

[0044] After passing through the hollow region of the force sensor 20 and the first end face of the housing 30 in sequence, the first end of the smooth rod bolt 50 is coaxially threaded to the second end of the extended guide rod 60. The second end of the smooth rod bolt 50 is configured to always be exposed outside the force sensor 20.

[0045] The convex ring structure 70 is fixedly sleeved on the smooth rod bolt 50 and sits on the first end face of the housing 30;

[0046] Spring 80 is sleeved on smooth rod bolt 50 and abuts against the sensing area of ​​convex ring structure 70 and force sensor 20 respectively.

[0047] Specifically, the press actuator of this utility model embodiment is applicable to any device that needs to perform button feel detection on the front and / or side buttons of a product during the production process, such as network communication mobile phones, financial payment POS machines, retail business POS machines, data acquisition equipment in the logistics and retail field, and industrial control equipment. The press actuator of this utility model embodiment is suitable not only for button feel detection of handheld terminal devices but also for button feel detection of non-handheld terminal devices. Simultaneously, the capacitive sensing contact 10 can sense the capacitive screen and perform line detection and screen button detection on the capacitive screen.

[0048] Furthermore, in this embodiment of the present invention, the capacitive sensing contact 10 is threadedly connected to the first end of the extended guide rod 60.

[0049] Specifically, in this embodiment of the present invention, the capacitive sensing contact 10 includes a capacitive sensing contact body and a threaded post disposed on the rear end of the capacitive sensing contact body.

[0050] An internal thread matching the threaded post is formed on the first end of the extended guide rod 60;

[0051] The data acquisition unit also includes a set screw locking mechanism 1100, which is used to fix the threaded post and the side wall of the first end of the extended guide rod 60 in the radial direction.

[0052] Specifically, in this embodiment of the invention, the capacitive sensing contact 10 needs to contact and rub against the button during the pressing process, therefore, the capacitive sensing contact 10 is a wear-prone component. Typically, the capacitive sensing contact 10 needs to be replaced after a certain number of button feel tests are completed. Therefore, the capacitive sensing contact 10 adopts a threaded connection quick-change structure design.

[0053] Furthermore, in this embodiment of the invention, the convex ring structure 70 is implemented using a clamping ring.

[0054] Specifically, Figure 4 A schematic diagram illustrating the principle of adjusting the extension length of the capacitive sensing contact according to an embodiment of this utility model is shown. (Refer to...) Figure 4 In this embodiment of the invention, by adjusting the position of the convex ring structure 70 on the smooth rod bolt 50, the extension length of the capacitive sensing contact can be finely adjusted. The specific principle is as follows: the convex ring structure 70, which is fixed to the smooth rod bolt 50, sits on the top plate 31 of the housing 30 under the action of gravity; when the position of the convex ring structure 70 is adjusted upward, the combination formed by the convex ring structure 70, the smooth rod bolt 50 and the extended guide rod 60 will fall as a whole, and the extension length of the capacitive sensing contact 10 will become longer; when the position of the convex ring structure 70 is adjusted downward, the combination formed by the convex ring structure 70, the smooth rod bolt 50 and the extended guide rod 60 will rise as a whole, and the extension length of the capacitive sensing contact 10 will become shorter.

[0055] Furthermore, in this embodiment of the invention, the guide bearing 40 is implemented using a graphite copper bushing.

[0056] Specifically, in this embodiment of the invention, the main function of the contact guiding mechanism is to ensure that the capacitive sensing contact 10 maintains high precision during unidirectional movement, to share and remove lateral forces, and to transmit axial forces to the spring 80. The guide bearing 40 is implemented using a graphite copper bushing, which has the advantages of high fitting precision and maintenance-free operation.

[0057] Furthermore, in this embodiment of the present invention, the pressing actuator further includes a gasket 1200;

[0058] The gasket 1200 is fitted onto the smooth rod bolt 50 and abuts against the sensing areas of the spring 80 and the force sensor 20, respectively.

[0059] Specifically, refer to Figure 3 The force transmission process of the pressing actuator in this embodiment of the utility model is as follows:

[0060] The reaction force exerted by the button on the capacitive sensing contact 10 is transmitted to the guide rod 50 through the extended guide rod 60; since the convex ring structure 70 is fixedly sleeved on the guide rod 50, the reaction force transmitted to the guide rod 50 is transmitted to the spring 80 through the convex ring structure 70, and the reaction force transmitted to the spring 80 is transmitted to the force sensor 20 through the washer 1200.

[0061] Furthermore, in this embodiment of the present invention, the force sensor 20 is a six-dimensional force sensor.

[0062] Furthermore, in this embodiment of the invention, the pressing actuator is used in conjunction with a three-axis motion mechanism, which has an end effector.

[0063] Mounting holes are provided on the edge portions of the support frame 90 and the housing 30, and the pressing actuator is mounted on the end effector through the corresponding mounting holes.

[0064] Furthermore, in this embodiment of the invention, a wrench holder is provided on the portion of the extended guide rod 60 located between the capacitive sensing contact 10 and the housing 30.

[0065] Specifically, in this embodiment of the invention, a wrench holder is provided on the extended guide rod 60. When it is necessary to thread the second end of the extended guide rod 60 to the first end of the smooth bolt 50, a wrench is used to fix the extended guide rod 60 through the wrench holder, and then an Allen wrench is used to rotate the second end of the smooth bolt 50 to achieve the threaded connection between the extended guide rod 60 and the smooth bolt 50. When it is necessary to install or remove the capacitive sensing contact 10, a wrench is used to fix the extended guide rod 60 through the wrench holder for easy operation.

[0066] Accordingly, based on the pressing actuator for button feel detection in this embodiment of the present invention, this embodiment of the present invention also proposes a button feel detection device, which includes the above-mentioned pressing actuator.

[0067] Specifically, the button tactile detection device of this utility model embodiment includes:

[0068] A three-axis motion mechanism having an end effector, with a pressing actuator mounted on the end effector;

[0069] Motion controller, used for motion control of a three-axis motion mechanism;

[0070] A processor is used to receive mechanical data transmitted from the end effector to achieve button tactile detection. Although one or more embodiments of the present invention have been described above, those skilled in the art will understand that the present invention can be implemented in any other form without departing from its spirit and scope. Therefore, the embodiments described above are illustrative and not restrictive, and many modifications and substitutions will be apparent to those skilled in the art without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. A press actuator for detecting button tactile feedback, characterized in that, Includes capacitive sensing contacts, force sensors, contact guiding mechanisms, force transmission components, and sensor mounting frames; The contact guide mechanism includes a housing and a guide bearing built into the housing; The force transmission assembly includes a smooth bolt, an extended guide rod, a convex ring structure, and a spring; The sensor mounting frame includes a support frame and a mounting cover formed on the support frame. The support frame is fixedly disposed on the first end face of the housing, and the force sensor is mounted in the mounting cover. The capacitive sensing contact is disposed on the first end of the extended guide rod, and the second end of the extended guide rod extends into the guide bearing after passing through the second end face of the housing. The first end face and the second end face are disposed opposite to each other. The first end of the optical bolt is coaxially threaded to the second end of the extended guide rod after passing through the hollow region of the force sensor and the first end face of the housing in sequence. The second end of the optical bolt is configured to always be exposed outside the force sensor. The convex ring structure is fixedly sleeved on the optical bolt and sits on the first end face of the housing; The spring is sleeved on the optical rod bolt and abuts against the convex ring structure and the sensing area of ​​the force sensor, respectively.

2. The press executor for key feel detection according to claim 1, wherein The capacitive sensing contact is threadedly connected to the first end of the extended guide rod.

3. The press actuator for key feel detection according to claim 2, wherein The capacitive sensing contact includes a capacitive sensing contact body and a threaded post disposed on the rear end of the capacitive sensing contact body. An internal thread matching the threaded post is formed on the first end of the extended guide rod; The pressing actuator also includes a set screw locking mechanism, which is used to fix the threaded post and the sidewall of the first end of the extended guide rod in the radial direction.

4. The press actuator for key feel detection according to claim 1, wherein The convex ring structure is achieved using a clamping ring.

5. The press actuator for key feel detection according to claim 1, wherein The guide bearing is implemented using a graphite copper bushing.

6. The press actuator for key feel detection according to claim 1, wherein It also includes gaskets; The gasket is fitted onto the guide rod bolt and abuts against the sensing areas of the spring and the force sensor, respectively.

7. The press actuator for key feel detection according to claim 1, wherein The force sensor is a six-dimensional force sensor.

8. The press actuator for key feel detection according to claim 1, wherein, The pressing actuator is used in conjunction with a three-axis motion mechanism, which has an end effector. Mounting holes are provided on the edge portions of the support frame and the housing, and the pressing actuator is mounted on the end effector through the mounting holes.

9. The press actuator for key feel detection according to claim 1, wherein, A wrench holder is provided on the portion of the extended guide rod located between the capacitive sensing contact and the housing.

10. A key feel detecting apparatus characterized by comprising: Includes the press actuator for button feel detection as described in any one of claims 1-9.

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