CN203024948U - Elasticity detection device - Google Patents

Abstract

An elasticity detecting device is used for testing an article to be tested. The object to be tested comprises an elastic part and a body connected with the elastic part. The elastic detection device comprises a propelling movable frame, an external force sensor and a linear sensor. The propelling movable frame comprises a fixed seat and an adjusting rod, and the adjusting rod is movably arranged on the fixed seat so as to enable the adjusting rod to move in a reciprocating manner relative to the fixed seat. The external force sensor is fixed on one side of the adjusting rod, and when the adjusting rod moves towards the elastic part, the external force sensor pushes the elastic part. The linear sensor comprises a telescopic rod and a base, the telescopic rod is arranged on the base, one end of the telescopic rod is fixed on the adjusting rod, and the relative movement between the adjusting rod and the fixing seat drives the telescopic rod to extend or shorten.

Description

Elasticity detection device

technical field

The utility model relates to a detection device, in particular to a detection device for testing elasticity.

Background technique

In today's daily life, a button is a common control element used in electronic devices and household appliances. For example, the mouse and keyboard dedicated to computers, the joystick of game consoles, the remote controller of television sets, and the control panel of washing machines all need buttons for people to operate.

Generally speaking, the button includes an elastic part and at least one sensing element, and the elastic part includes a cap and an elastic part connected to the cap, wherein the elastic part is, for example, a spring. When the user presses the key, the keycap presses the elastic member, so that the elastic member triggers the sensing element, so that the sensing element generates information. Electronic products or home appliances will perform corresponding actions after receiving this information. In this way, the user can operate electronic products or home appliances.

In terms of manufacturing or designing keys, the elastic coefficient of the elastic member is an important parameter. If the elastic coefficient of the elastic member is too large, it will be difficult for the elastic member to deform, so that the user needs to expend a lot of force to press the button. Therefore, if the button is pressed for a long time, the hands of the user are easily fatigued. Conversely, if the elastic coefficient of the elastic member is too small, the elastic member may be easily compressed and trigger the sensing element, causing malfunctions of electronic products or home appliances. Therefore, the elasticity test of the keyboard becomes an important subject.

Contents of the invention

The utility model provides an elastic detection device, which can detect the elastic parts in the key.

The utility model provides an elastic detection device, which is used for testing a product to be tested. The object to be tested includes an elastic part and a body connected with the elastic part. The elastic detection device includes a propulsion movable frame, an external force sensor and a linear sensor. The propulsion movable frame includes a fixed seat and an adjusting rod, and the adjusting rod is movably installed on the fixed seat so that the adjusting rod can reciprocate relative to the fixed seat. The external force sensor is fixed on one side of the adjusting rod, and when the adjusting rod moves toward the elastic part, the external force sensor pushes the elastic part. The linear sensor includes a telescopic rod and a base. The telescopic rod is installed on the base, and one end of the telescopic rod is fixed to the adjustment rod, wherein the relative movement between the adjustment rod and the fixed base drives the extension or shortening of the telescopic rod.

Wherein, the adjusting rod includes a propelling seat and a rod body, the propelling seat is arranged at one end of the rod body, the rod body is parallel to the telescopic rod, and the propelling seat connects the rod body and the telescopic rod.

Wherein, the elasticity detection device further includes a base and a fixing element, the propelling movable frame and the fixing element are arranged on the base, and the fixing element fixes the object to be tested on the base.

Wherein, the abutment is provided with a chute, and the pushing seat is slidably arranged in the chute.

Wherein, the fixing base is a power source, the adjusting rod is a power output rod, and the fixing base is used to generate power to drive the adjusting rod to move.

Wherein, the fixing base and the adjusting rod are integrated into a cylinder or a linear motor.

Wherein, the elastic detection device also includes a driving element and a connecting piece, the driving element includes a driving unit and a driving rod, the driving unit is fixed on the fixing base, the driving rod is movably arranged on the driving unit, the The driving rod and the adjusting rod are juxtaposed, and the connecting piece is connected between the driving rod and the adjusting rod.

Wherein, the driving element is a cylinder or a linear motor.

Wherein, the elastic detection device further includes a processing unit, which is electrically connected to the object under test, the external force sensor and the linear sensor, and used to control the object under test, the measuring unit and the linear sensor.

Based on the above, the elasticity detection device of the present utility model can measure the elastic force, moving stroke or elastic coefficient of the elastic parts to judge whether the elastic quality of the elastic parts is abnormal. Thereby can help key adopt normal elastic part.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

Description of drawings

FIG. 1 is a schematic side view of an elasticity detection device according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of the use state of the elasticity detection device in FIG. 1 .

Fig. 3 is a schematic side view of an elasticity detection device according to another embodiment of the present invention.

Fig. 4 is a schematic side view of an elasticity detection device according to another embodiment of the present invention.

Wherein, the reference signs are explained as follows:

100 elastic detection device

100' elastic detection device

100" elastic detection device

10 propulsion activity frame

11 fixed seat

12 adjustment lever

121 propulsion seat

122 rod body

20 external force sensor

30 linear sensors

31 telescopic rod

32 base

40 abutments

221 shell

S1~S3 signal

40" abutment

41 chute

50 fixed elements

60 drive elements

61 drive units

62 drive rod

70 connectors

80 processing units

200 items to be tested

210 elastic parts

211 keycaps

212 elastic parts

220 body

222 sensing elements

Detailed ways

FIG. 1 is a schematic side view of an elasticity detection device 100 according to an embodiment of the present invention. As shown in FIG. 1 , the elasticity detection device 100 is used to test the object under test 200 , wherein the object under test 200 includes an elastic part 210 and a body 220 , and the elastic part 210 is connected to the body 220 . The elastic part 210 includes a keycap 211 and an elastic part 212 . The body 220 includes a casing 221 and a sensing element 222 , and the sensing element 222 has a trigger circuit (not shown). Both the keycap 211 and the elastic member 212 are mounted on the casing 221 .

The sensing element 222 and part of the elastic component 210 are accommodated in the casing 221 . The elastic member 212 is partially accommodated in the keycap 211 , and one end of the elastic member 212 is in contact with the top of the keycap 211 . When an external force is applied to the keycap 211 , the keycap 211 will move toward the casing 221 and further compress the elastic member 212 . The compressed elastic part 212 will generate compression elastic force, and when the elastic part 212 is compressed by an external force to reach a certain movement stroke, the elastic part 210 will trigger the sensing element 222 to activate the DUT 200 or execute the DUT 200 of a function.

The elastic part 210 and the sensing element 222 of the body 220 can form a button, which can be a film button, a mechanical button or a non-contact electrostatic button, and the present invention does not limit the types of the above buttons. In addition, the DUT 200 may be an electronic device with buttons, a home appliance, or an accessory of one of such an electronic device and a home appliance. For example, the DUT 200 may be a computer keyboard, a game console, a home phone, or a TV remote control. In addition, the object to be tested 200 may also be a spring balance or a vehicle shock absorber.

In addition, the elastic detection device 100 can also be used to detect the sweeper. When the sweeper performs tasks, it may collide with walls, furniture, etc., so the sweeper has a collision sensor. The crash sensor has elements like the elastic part 210 and the sensing element 222 . When the elastic part is compressed due to the collision, the collision sensor can sense the deformation of the elastic part to send a signal to the processor of the sweeper, so that the sweeper can change direction and move forward without stagnation.

As mentioned above, the selection of the collision sensor will affect the sensitivity of the sweeper. No matter whether the elastic coefficient of the elastic parts in the collision sensor is too large or too small, the sweeper may not be able to perform the cleaning task smoothly. In this regard, the elasticity detection device 100 can detect the collision sensor of the sweeper, so that the collision sensor has an appropriate elasticity coefficient.

The elasticity detection device 100 includes a base 40 , a propulsion movable frame 10 , an external force sensor 20 , a linear sensor 30 and a fixed element 50 . The propulsion movable frame 10 , the external force sensor 20 and the linear sensor 30 are all disposed on the base 40 , and the object under test 200 is also fixed on the base 40 or around the base 40 by using the fixing element 50 .

The propelling movable frame 10 includes a fixed seat 11 and an adjusting rod 12 . In this embodiment, the adjusting rod 12 includes a rod body 122 and a pushing seat 121 . The rod body 122 is movably disposed on the fixing seat 11 , and the pushing seat 121 is disposed on the rod body 122 , which means that the pushing seat 121 and the fixing seat 11 are respectively disposed at two ends of the rod body 122 . The pushing base 121 is relatively close to the object under test 200 , and the adjustment rod 12 reciprocates relative to the fixed base 11 , wherein the adjustment rod 12 reciprocates between the object under test 200 and the fixed base 11 .

In this embodiment, the fixing base 11 is a power source, and the adjusting rod 12 is a power output rod. Preferably, the fixing seat 11 and the adjusting rod 12 can be integrated into an air cylinder (also called a pneumatic cylinder), and the air cylinder can output linear power, and has the advantages of environmental protection and low price. When the fixed seat 11 and the adjusting rod 12 are integrated into a cylinder, the power source (that is, the fixed seat 11) is the cylinder of the cylinder, which contains structures such as pistons and end cover plates, and the power output rod (that is, the adjusting rod 12) is the piston. rod (push rod). The piston rod is arranged at the center of the piston, so that the piston rod can move back and forth following the piston. In this way, the adjusting rod 12 can move back and forth relative to the fixing base 11 .

In addition, the power source (that is, the fixing seat 11 ) can also be a linear motor, and the power output rod (that is, the adjusting rod 12 ) is arranged on the transmission mechanism of the linear motor. The aforementioned power source can also be a stepper motor or a servo motor that provides rotation. The aforementioned power output rod can be configured with a set of worm gears, crank sliders, or cam rods to convert rotary motion into linear motion. In this way, the adjusting rod 12 can also reciprocally move relative to the fixing base 11 .

The external force sensor 20 is fixed on one side of the adjustment rod 12 . In this embodiment, the external force sensor 20 is located on the push seat 121 of the adjustment rod 12 . When the adjusting rod 12 protrudes from the fixing seat 11 and moves to a certain distance toward the object under test 200 , the external force sensor 20 can contact the elastic part 210 of the object under test 200 . As the adjusting rod 12 pushes the elastic part 210 , the external force sensor 20 applies an external force to the elastic part 210 to compress the elastic part 210 . Since the action force and the reaction force are equal, the forces on the external force sensor 20 and the elastic component 210 are equal, so the external force applied by the external force sensor 20 is equal to the elastic force of the elastic component 210 .

In this embodiment, the external force sensor 20 can be made of a piezoelectric material. When the piezoelectric material is deformed due to force, the electrode moments in the material will change to generate electrical energy. Using this characteristic, it is possible to measure how much force the piezoelectric material exerts on the elastic component 210 , that is, to measure the elastic force of the elastic component 210 . It should be noted that the external force sensor 20 is not limited to piezoelectric materials, and in other embodiments, the external force sensing element 222 can also be a strain gauge or an elastic probe for pressure sensing.

The linear sensor 30 includes a telescopic rod 31 and a base 32 , and the telescopic rod 31 is disposed on the base 32 . The telescopic rod 31 is juxtaposed with the adjusting rod 12 , and the telescopic rod 31 is connected with the adjusting rod 12 , so that the telescopic rod 31 will be extended or shortened as the adjusting rod 12 moves. In this embodiment, the end of the telescopic rod 31 is fixed to the pushing seat 121 of the adjusting rod 12 . In this way, the linear sensor 30 can measure the moving stroke of the adjusting rod 12 , that is, the moving stroke of the external force sensor 20 , and the moving directions of the linear sensor 30 , the adjusting rod 12 and the elastic part 210 are all in the same direction.

The base 40 is used to carry the propelling movable frame 10 , the external force sensor 20 and the linear sensor 30 , and a power source may be disposed in the base 40 . In this embodiment, the abutment 40 is provided with a chute 41 , so that the aforementioned pushing seat 121 or the connecting piece 70 is slidably disposed in the chute 41 . When a force is applied to the elastic part 210, the adjustment rod 12 will generate an axial stress, and the chute 41 of the base 40 can reduce the flexure of the adjustment rod 12 without affecting the measurement of the external force sensor 20, so as to Avoid errors.

In this embodiment, the fixing element 50 is disposed on the base 40 , and the fixing element fixes the object under test 200 such that the elastic part 210 of the object under test 200 faces the external force sensor 20 . , the fixing element 50 can be used to fix the DUT 200 by means of clamping, locking, binding, magnetic attraction or snapping. For example, the fixing element 50 can be a clamp or a powerful magnet, but not limited thereto.

FIG. 2 is a schematic diagram of the use state of the elasticity detection device according to an embodiment of the present invention. As shown in Figures 1 and 2, the elasticity detection device 100 further includes a processing unit 80, which is a computer, and the processing unit 80 is electrically connected to the sensing element 222 of the object under test 200, the external force sensor 20 and Linear sensor 30. The processing unit 80 can be disposed around the base 40 , or can be integrated with the base 40 , for example, embedded inside the base 40 , but the present invention is not limited thereto.

The processing unit 80 can receive the signal S1 generated by the sensing element 222 to make the processing unit 80 know when the sensing element 222 is triggered. The processing unit 80 can also receive the force signal S2 measured by the external force sensor 20 to determine when the external force sensor 20 starts to apply force to the elastic part 210 and measure the elastic force of the elastic part 210 . The processing unit 80 can also receive the signal S3 of the linear sensor 30 , and this signal S3 carries the information of the movement distance of the external force sensor 20 .

The processing unit 80 can measure how much external force the elastic part 210 needs to withstand and how much it moves according to the above signals, and the sensing element 222 generates the signal S1 to determine whether the sensing element 222 is sensitive. In addition, the processing unit 80 can also calculate the elastic force and elastic coefficient of the elastic part 210 according to the above signals S1 , S2 , S3 , so as to determine whether the elastic part 210 of the DUT 200 is a good product.

The processing unit 80 can further provide calibration and control functions for calibrating the linear sensor 30 and the external force sensor 20 . In detail, when starting to measure the keycap 211 , the linear sensor 30 and the external force sensor 20 are reset to zero, and the measurement of the elastic force and the moving distance is started. In addition, the processing unit 80 can control the output of the aforementioned power source (that is, the fixed seat 11 ), that is, control the moving stroke of the external force sensor 20 .

Based on the above, the procedure for detecting the object under test 200 by the elastic detection device 100 can be as follows:

First, fix the object to be tested 200, and make the elastic part 210 of the object to be tested 200 face the external force sensor 20;

When the linear sensor 30 is ready to move, use the processing unit 80 to reset the external force sensor 20 and the linear sensor 30 to zero;

Utilize processing unit 80, control aforementioned power source to output power, make power output rod (that is, adjustment rod 12), linear sensor 30 and external force sensor 20 have moving stroke;

Feed back the applied force information of the external force sensor 20, and start to calculate the moving stroke of the linear sensor 30 when the applied force information is greater than zero; and

When the sensing element 222 is triggered, the signal S1 of the sensing element 222 is fed back, and the moving stroke signal S3 of the linear sensor 30 and the force signal S2 of the external force sensor 20 are recorded at the same time.

Through the above steps, the elasticity detection device 100 can be used to judge the quality of the object under test 200 . In detail, when the elastic part 210 is pushed by the external force sensor 20 to move with a predetermined external force, the normal elastic part 210 should move a predetermined distance. However, if the moving stroke of the elastic component 210 is less than the predetermined stroke under the above-mentioned external force, it means that the elastic coefficient of the elastic member 212 is too large, exceeding the original elastic coefficient design.

When the elastic part 210 is moved by the aforementioned predetermined external force and also moves the aforementioned predetermined distance, the normal sensing element 222 should be triggered to generate a signal. However, if the sensing element 222 is still not triggered and no signal is generated, it means that the sensing element 222 may be abnormal or faulty, or the sensing element 222 may be improperly assembled.

In addition, when the elastic part 210 is pushed by the external force sensor 20 with less than a predetermined external force, but moves a predetermined distance, and triggers the sensing element 222 to generate a signal, it means that the elastic coefficient of the elastic part 212 is too small, lower than the original elastic coefficient. design. Similarly, under the condition that the elastic part 210 is pushed by a lower than predetermined external force, if the sensing element 222 is triggered and generates a signal before the elastic part 210 moves to the predetermined stroke, this indicates that the sensing element 222 may be abnormal Or malfunction, or improper assembly of the sensing element 222 .

It can be seen that the elasticity detection device 100 can be used to detect the elasticity of the elastic part 210 of the object under test 200 to judge the quality of the elastic part 210 and also detect whether the sensing element 222 is abnormal, faulty, or improperly assembled. In addition, when the sensing element 222 is just triggered, the elastic member 212 of the elastic member 210 can be classified according to the elastic force and stroke of the elastic member 210 measured at this time, so that the elastic member 212 can be used for keys of different specifications. . For example, if some users like to tap the button lightly, the button uses the elastic member 212 with a low elastic coefficient; some users like to press the button with gravity, then the button uses the elastic member 212 with a high elastic coefficient.

Fig. 3 is a schematic side view of an elasticity detection device 100' according to another embodiment of the present invention. As shown in FIG. 3, the structure and detection method of the elasticity detection device 100' are substantially the same as the elasticity detection device 100 of FIG. It will not be repeated here.

Elasticity detection device 100' can further comprise a driving element 60 and a connecting member 70, and driving element 60 comprises a driving unit 61 and a driving rod 62, and the driving unit 61 is substantially equivalent to the above-mentioned power source (that is, the fixed base 11), and the driving rod 62 is roughly equal to the above-mentioned power take-off lever (ie, the adjustment lever 12).

The driving unit 61 is fixed on the fixing base 11 by screw locking, but not limited thereto. The driving rod 62 is parallel to the adjusting rod 12 , preferably, the driving rod 62 is substantially parallel to the adjusting rod 12 . The connecting piece 70 is connected between the driving rod 62 and the adjusting rod 12, so that the driving rod 62 can drive the adjusting rod 12 when it moves, and the connection positions of the connecting piece 70 are respectively arranged at the ends of the driving rod 62 and the adjusting rod 12. The ends of all are the ends close to the DUT 200 .

Fig. 4 is a schematic side view of an elastic detection device 100" according to another embodiment of the present invention. As shown in Fig. 4, the structure and detection method of the elastic detection device 100" are substantially the same as those of the elastic detection device 100 in Fig. 1, Therefore, the following description will mainly focus on the differences between the elasticity detection devices 100 and 100 ″, and the similarities will not be repeated here.

Elasticity detection device 100 " also can be a vertical machine platform. The base 40 " of elasticity detection device 100 " does not need to be provided with chute 41 (as shown in Figure 1 ), and the moving direction of adjustment rod 12 is perpendicular to the horizontal plane. Compared with the elasticity testing device 100 , the elasticity testing device 100 ″ (vertical machine platform) requires less lateral space, while the elasticity testing device 100 (horizontal machine platform) requires less vertical space.

In summary, the elasticity detection device of the present utility model can measure the induction sensitivity, elastic force, moving stroke and overall elastic coefficient of the product to be tested, and further judge whether the elastic quality of the elastic parts of the product to be tested is abnormal, and can Classification of test items. In this way, using the elasticity detection device of the present invention can help to judge whether the keyboard is good or not, and can also help the sweeper to adopt normal or excellent elastic parts.

The above descriptions are only examples of the present utility model, and are not intended to limit the scope of protection of the present utility model. Any person familiar with the art without departing from the spirit and scope of the utility model, the equivalent replacement of changes and retouchings are still within the patent protection scope of the utility model.

Claims (9)

1. an elastomeric check device, be used for test one product to be tested, and this product to be tested comprises that an elastic part and connects the body of this elastic part, it is characterized in that, this elastomeric check device comprises:

One advances tressel, comprises a holder and an adjusting lever, and this adjusting lever is installed in this holder movably, so that this adjusting lever reciprocally moves with respect to this holder;

One external force sensor is fixed in a side of this adjusting lever, and when this adjusting lever moved towards this elastic part, this external force sensor promoted this elastic part; And

One linear transducer comprises an expansion link and a pedestal, and this expansion link is installed in this pedestal, and an end of this expansion link is fixed in this adjusting lever, and wherein relatively moving between this adjusting lever and this holder drives this expansion link and elongate or shorten.

2. elastomeric check device as claimed in claim 1, is characterized in that, this adjusting lever comprises an advance seat and a body of rod, and this advance seat is arranged at an end of this body of rod, and this body of rod and this expansion link are arranged side by side, and this advance seat connects this body of rod and this expansion link.

3. elastomeric check device as claimed in claim 2, is characterized in that, this elastomeric check device also comprises a base station and a retaining element, and this propelling tressel and this retaining element are arranged on this base station, and this retaining element is fixed in this product to be tested on this base station.

4. elastomeric check device as claimed in claim 3, is characterized in that, this base station is provided with a chute, and this advance seat is mounted slidably in this chute.

5. elastomeric check device as claimed in claim 1, is characterized in that, this holder is a power source, and this adjusting lever is a power output rod, and this holder drives this adjusting lever for generation of power and moves.

6. elastomeric check device as claimed in claim 5, is characterized in that, this holder and this adjusting lever are integrated into a cylinder or a linear motor.

7. as claim 1 a described elastomeric check device, it is characterized in that, this elastomeric check device also comprises a driving element and a connection piece, this driving element comprises a driver element and a driving stem, this driver element is fixed in this holder, this driving stem is arranged at this driver element movably, and this driving stem and this adjusting lever are arranged side by side, and this web member is connected between this driving stem and this adjusting lever.

8. elastomeric check device as claimed in claim 7, is characterized in that, this driving element is a cylinder or a linear motor.

9. elastomeric check device as claimed in claim 1, it is characterized in that, this elastomeric check device also comprises a processing unit, and this processing unit is electrically connected at this product to be tested, this external force sensor and this linear transducer, and is used for controlling this product to be tested, this measurement unit and this linear transducer.

Images