CN201811897U

CN201811897U - Key switch endurance tester

Info

Publication number: CN201811897U
Application number: CN2010201854834U
Authority: CN
Inventors: 李云
Original assignee: SHENZHEN NINEWAY HITECH CO Ltd
Current assignee: SHENZHEN NINEWAY HITECH CO Ltd
Priority date: 2010-05-04
Filing date: 2010-05-04
Publication date: 2011-04-27
Anticipated expiration: 2020-05-04

Abstract

The utility model relates to a key switch endurance tester which comprises a main control box (8), an adjustable support (6), a motor pipe (4), a stepping motor (13), a testing head (3), a displayer (11), a keyboard (12) and a platform for placing a workpiece (2) to be tested, and is characterized in that the main control box (8) controls and drives the stepping motor (3) in the motor pipe (4) to directly drive the testing head (3) to do up-down reciprocating movement, so that the workpiece to be tested is continuously pressed to simulate fingers to do effective key switch pressing actions; the stepping motor (13) can fast and accurately control the position, the speed and the pressing force of the testing head (3); and the main control box (8) conducts the real-time test on the on-and-off status of the workpiece (2) to be tested by a switch detecting line (15), and the characteristics can not be realized in the prior art. In the utility model, due to the special whole structure arrangement and the use of the special stepping motor, a cam linkage mechanism is eliminated, the material can be saved, the weight can be lightened, the power consumption can be reduced, the noise is lowered, and the operation is convenient.

Description

A kind of keyswitch life testing machine

Technical field

The utility model relates to a kind of keyswitch life testing machine.

Background technology

Existing keyswitch life test technology can be divided into motor, electromagnet and pneumatic three classes according to type of drive.Electromagnet since self in life-span not high, less being used.Pneumatic mode has simple in structure and advantage flexibly, but noise and power consumption are big and will have source of the gas could work, so the use inconvenience.Motor-driven is to adopt maximum a kind of modes, but prior art generally will rotatablely move with cam mechanism and become straight reciprocating motion, and in order to realize the constant of reliable long-life to-and-fro movement and pressing force, one-piece construction is comparatively complicated.Generally more than 50 kilograms, noise and energy consumption are also big for complete machine weight.Prior art is not seen the design of adopting stepper motor.

The utility model content

The purpose of this utility model be to provide a kind of simple and reasonable, cost is low, energy consumption is low, noise is low, test force and test speed are adjustable, can simulate the finger push action and detect the keyswitch life testing machine of the switch situation of measured workpiece in real time.

The technical scheme that the utility model adopted is: this keyswitch life testing machine includes primary control box, adjustable support, motor tube, stepper motor, measuring head, switch detection line.The output shaft of the stepper motor in primary control box control and the drive motor tube is done straight reciprocating motion, simulates the push action of finger thereby the drive measuring head pumps, and primary control box detects the switch situation of measured workpiece in real time by the switch detection line simultaneously.When switch damages, the life-span number of times is noted.In order to adapt to multiple measured workpiece, adjustable support both can be finely tuned up and down by trimming hand wheel, also can slide on column and swing and do to adjust on a large scale.

One of improve as one, this programme adopts a kind of stepper motor, and this stepper motor directly converts electrical energy into axially-movable and drives measuring head and pump except identical with common step motor control mode.

Description of drawings

Fig. 1 is the front view (FV) of the utility model embodiment.

Fig. 2 is the outboard profile of the utility model embodiment.

Label declaration:

1, platform 2, measured workpiece 3, measuring head 4, motor tube 5, right trimming hand wheel 6, adjustable support 7, left trimming hand wheel 8, primary control box 9, column 10, power switch 11, display 12, keyboard 13, stepper motor 1bb4, primary control box bonnet 15, switch detection line 16, band line supply socket 17, adjustable support slide 18, support fixed knob 19, slip ring fixed knob 20, slip ring 21, Connection Block.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Keyswitch life testing machine as shown in Figure 1, 2 includes primary control box 8, adjustable support 6, motor tube 4, stepper motor 13, measuring head 3, switch detection line 15.Master control borad and motor-driven plate are arranged in the primary control box 8, and operating personnel are provided with test parameter by keyboard on the primary control box 8 12 and display 11 and show test results.Primary control box 8 is erected at the top, adjustable support 6 middle and motor tube 4 below, primary control box 8 and motor tube 4 by screw retention at adjustable support 6, there is the through hole laying wire primary control box 8 and motor tube 4 inside, stepper motor 13 in the motor tube 4 and primary control box 8 interior motor-driven plates are communicated with, realize control and driving stepper motor 13.Stepper motor 13 need directly not exported axially-movable by any outside gear train, and its kinematic axis and measuring head 3 directly by being threaded, just can be realized pumping of measuring head 3.

Be to be connected the fine setting up and down that realizes adjustable support 6 between adjustable support 6 and the adjustable support slide 17 by the dovetail groove rack and pinion drive mechanism.Adjustable support slide 17 inside have through hole to slide on the column 9 of cylinder and rotate and adjust adjustable support 6 on a large scale, thereby the initial position of adjusting measuring head 3 on a large scale is to adapt to various measured workpieces 2.Releases clamp fixed knob 18 before adjusting is tightened after the adjustment.Slip ring 20 and slip ring fixed knob 19 are used for adjustable support slide 17 to be supported.Adjustable support slide 17 also fixedly revolves 19 supports simultaneously of being bound by by slip ring 20 that is close to and slip ring outside itself being fixed by support fixed knob 18.

Connection Block 21 fixedly secures column 9 on platform 1.

Primary control box bonnet 14 is drawn two cables, and one is used to connect the 12V direct supply, and another is a switch detection line 15, and switch detection line 15 links to each other with measured workpiece 2, makes primary control box 8 detector switch state in real time.

Power switch 10 is housed, display 11, keyboard 12 on the primary control box 8.

Display 11 is that the light-emitting diode display of 87 sections mixed decimal points is used for display digit and information.

Keyboard has 16 buttons, comprises 10 numerical keys, 6 function keys.These buttons are used for input and preset number of times, time, date, adjust pressing force and test speed.

The break-make of power switch 10 management DC12V inputs, the utility model uses single power supply.

Claims

1. a keyswitch life testing machine includes primary control box (8), adjustable support (6), motor tube (4), stepper motor (13), measuring head (3), switch detection line (15) and platform (1).It is characterized in that: primary control box (8) control on the adjustable support (6) and the stepper motor (13) in the drive motor tube (4) drive measuring head (3) and pump, the initial position of measuring head (3) can pass through trimming hand wheel (5), fine setting up and down, also can pass through releases clamp fixed knob (18), regulate on a large scale up and down along column (9), adapt to the measured device (2) of various sizes and shape.

2. as right 1 described keyswitch life testing machine, it is characterized in that primary control box (8) is erected at the top, adjustable support (6) middle and motor tube (4) below, they pass through screw retention together.

3. as right 1 described keyswitch life testing machine, it is characterized in that: be to be connected the fine setting up and down that realizes adjustable support (6) between described adjustable support (6) and the adjustable support slide (17) by the dovetail groove rack and pinion drive mechanism.

4. as right 1 described keyswitch test machine, it is characterized in that: power switch (10) is housed, display (11), keyboard (12) on the described primary control box (8).

5. as right 4 described keyswitch test machines, it is characterized in that: described display is the light-emitting diode display of 87 sections mixed decimal points.

6. as right 4 described keyswitch test machines, it is characterized in that: described keyboard has 16 buttons, comprises 10 numerical keys, 6 function keys.

7. as right 1 described keyswitch test machine, it is characterized in that: described switch detection line (15) links to each other with measured workpiece (2), makes primary control box (8) detector switch state in real time.

8. as right 1 described keyswitch test machine, it is characterized in that: described stepper motor (13) outside does not connect any gear train, and the kinematic axis of stepper motor inside and measuring head (3) are directly by being threaded.

9. as right 3 described keyswitch test machines, it is characterized in that: described adjustable support slide (17) itself also fixedly revolves be bound by (19) by slip ring that is close to (20) and slip ring and supports simultaneously outside being fixed by support fixed knob (18).