CN204556788U - A key tapping head applied to a keyboard testing device - Google Patents

Abstract

The utility model discloses a key knocking head applied to a keyboard testing device, which comprises a knocking head shell internally provided with a coil winding, wherein a movable shaft hole is arranged at the core part of the knocking head shell, a movable shaft is embedded in the movable shaft hole, the upper end part of the movable shaft extends to the upper end side of the knocking head shell, and the lower end part of the movable shaft extends to the lower end side of the knocking head shell; the loose axle includes upper magnetic section, lower non-magnetic section that the coaxial was arranged, and lower non-magnetic section tip is adorned in knocking first shell lower extreme side and is established the contact of knocking, goes up magnetic section upper end and overlaps the head of gluing in knocking first shell upper end side, goes up magnetic section upper end and overlaps between gluing head, the head shell of knocking and reset spring, reset spring's upper end, lower tip respectively with the head of gluing of corresponding side, beat first shell upper end butt. Through the structure design, the utility model has the advantages of structural design is novel, the return is fast and can improve keyboard testing arrangement's work efficiency effectively.

Description

A key tapping head applied to a keyboard testing device

technical field

The utility model relates to the technical field of keyboard testing devices, in particular to a key tapping head applied to the keyboard testing device.

Background technique

As the main input structure, keys are widely used in electronic products such as computer keyboards, mobile phones and calculators; On and off, so as to input letters, numbers, punctuation marks, etc. into the corresponding computer, mobile phone or calculator.

In the production process of keyboards (including computer keyboards, mobile phone keyboards, and calculator keyboards, etc.), when the quality inspection of the finished keyboard must be carried out before production, it is necessary to hit each key to test its rebound and contacts. on and off. There are various types of keyboard testing devices in the prior art; among them, for the keyboard testing device, it mainly completes the key-pressing action of the keyboard to be tested through the key-pressing head.

However, for the existing key tapping head, it generally has the defect of slow return speed, which will seriously affect the working efficiency of the keyboard testing device.

Contents of the invention

The purpose of this utility model is to provide a key tapping head applied to the keyboard testing device in view of the deficiencies of the prior art. The key tapping head applied to the keyboard testing device has a novel structure design, fast return speed and effective Improve the working efficiency of the keyboard testing device.

In order to achieve the above object, the utility model is realized through the following technical solutions.

A keystroke head applied to a keyboard testing device, comprising a cylindrical shell with a coil winding installed inside, the core of the shell is provided with a vertical and complete hole along the axis of the shell. Through the movable shaft hole, the movable shaft hole of the striking head shell can be embedded with a movable shaft relatively up and down, the upper end of the movable shaft extends to the upper end side of the striking head shell, and the lower end of the movable shaft extends to the striking the lower end side of the head shell;

The movable shaft includes an upper magnetic section coaxially arranged and a lower nonmagnetic section located at the lower end side of the upper magnetic section, the upper end of the lower nonmagnetic section is connected with the lower end of the upper magnetic section, and the lower end of the lower nonmagnetic section of the movable shaft is at the The lower end of the knocking head shell is equipped with a knocking contact, the upper end of the upper magnetic section of the movable shaft is covered with a rubber head on the upper end side of the knocking head shell, and the upper end of the upper magnetic section of the movable shaft is attached to the rubber head and the knocking head. A return spring is sleeved between the beating head shells, and the upper end and the lower end of the return spring are in contact with the rubber head on the corresponding side and the upper end of the beating head shell respectively.

Wherein, the upper end of the movable shaft hole of the shell of the knocking head is embedded with an upper guide sleeve corresponding to the upper magnetic section of the movable shaft, and the upper magnetic section of the movable shaft can be embedded in the upper guide sleeve relatively up and down in the center hole.

Wherein, the lower end of the movable shaft hole of the shell of the knocking head is embedded with a lower guide sleeve corresponding to the lower non-magnetic section of the movable shaft, and the lower non-magnetic section of the movable shaft can be embedded in the lower guide sleeve relatively up and down. in the center hole of the tube.

Wherein, the outer diameter of the percussion head shell is 10mm-18mm.

The beneficial effects of the utility model are: a key tapping head applied to a keyboard testing device described in the utility model, which includes a casing of the tapping head with a coil winding installed inside, and a movable shaft hole is opened in the core of the casing of the tapping head. The movable shaft is embedded in the movable shaft hole, the upper end of the movable shaft extends to the upper end of the striking head shell, and the lower end of the movable shaft extends to the lower end of the striking head shell; the movable shaft includes an upper magnetic section and a lower non-magnetic section coaxially arranged , the lower end of the lower non-magnetic section is equipped with a percussion contact on the lower end of the percussion head shell, the upper end of the upper magnetic section is covered with a rubber head on the upper side of the percussion head shell, and the upper end of the upper magnetic section is on the rubber head and percussion head. A return spring is set between the shells, and the upper end and the lower end of the return spring are respectively abutted against the rubber head on the corresponding side and the upper end of the percussion head shell. Through the above structural design, the utility model has the advantages of novel structural design, fast return speed and can effectively improve the working efficiency of the keyboard testing device.

Description of drawings

The utility model is further described below using the drawings, but the embodiments in the drawings do not constitute any limitation to the utility model.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is an exploded schematic diagram of the utility model.

Fig. 3 is a schematic cross-sectional view of the utility model.

In Figures 1 to 3 include:

1——Knocking head shell 11——Active shaft hole

2——Active shaft 21——Magnetic segment

22——Lower non-magnetic section 3——Knocking contact

4——Glue head 5——Return spring

6——upper guide sleeve 7——lower guide sleeve.

Detailed ways

The utility model will be described below in conjunction with specific embodiments.

As shown in Figures 1 to 3, a key tapping head applied to a keyboard testing device includes a cylindrical tapping head shell 1 with coil windings installed inside, and the core of the tapping head shell 1 is provided with The movable shaft hole 11 completely penetrates up and down along the axial direction of the striking head shell 1, and the movable shaft 2 can be embedded in the movable shaft hole 11 of the striking head casing 1 relatively up and down, and the upper end of the movable shaft 2 extends to The upper end side of the striking head case 1 and the lower end portion of the movable shaft 2 extend to the lower end side of the striking head case 1 .

Further, the movable shaft 2 includes an upper magnetic segment 21 coaxially arranged and a lower non-magnetic segment 22 positioned at the lower end side of the upper magnetic segment 21, the upper end of the lower non-magnetic segment 22 is connected with the lower end of the upper magnetic segment 21, and the movable The lower end of the lower non-magnetic section 22 of the shaft 2 is equipped with a knocking contact 3 on the lower end side of the knocking head shell 1, and the upper end of the upper magnetic section 21 of the movable shaft 2 is clamped on the upper end side of the knocking head shell 1. The rubber head 4, the upper end of the upper magnetic section 21 of the movable shaft 2 is set with a return spring 5 between the rubber head 4 and the knocking head shell 1, and the upper end and the lower end of the return spring 5 are respectively connected with the rubber head 4, The upper end of the striking head shell 1 abuts against it.

It should be further pointed out that the outer diameter of the striking head shell 1 of the present invention is 10mm-18mm.

During the working process of the utility model, the coil winding installed inside the shell 1 of the knocking head is energized and generates a magnetic field, and the magnetic force of the magnetic field acts on the movable shaft 2 in the movable shaft hole 11 and drives the movable shaft 2 to move downward. The movable shaft 2 touches and hits the key by tapping the lower end. At this time, the return spring 5 is compressed; when the coil winding is powered off, the magnetic field disappears, and the return spring 5 drives the movable shaft 2 toward Move up and reset active axis 2.

Further explanation is needed, the utility model can control the magnitude of the magnetic field generated by the coil winding by controlling the voltage and current connected to the coil winding, and then control the force of the movable shaft 2 hitting the key. Wherein, the dynamics of the movable shaft 2 of the utility model hitting the keys is 30g-150g, and the precision is ± 2g; it needs to be further pointed out that in the actual keyboard testing process, the dynamics of the movable shaft 2 of the utility model hitting the buttons can also be Adjust according to the actual situation.

It should be further pointed out that the movable shaft 2 of the present utility model adopts a segmented structure design, that is, the movable shaft 2 of the present utility model is composed of an upper magnetic segment 21 and a lower non-magnetic segment 22, the upper magnetic segment 21 is magnetic, and the lower The non-magnetic section 22 has no magnetism, and when the magnetic field generated by the coil winding acts on the movable shaft 2 , the magnetic field mainly acts on the upper magnetic section 21 of the movable shaft 2 . Since the lower non-magnetic section 22 is non-magnetic, when the coil winding is powered off and the movable shaft 2 is reset, the movable shaft 2 can reduce its own magnetic effect and cause the problem of slowing down the return speed, that is, the segmented structure design The return speed of the movable shaft 2 can be effectively improved.

Based on the above situation, it can be seen that through the above structural design, the utility model has the advantages of novel structural design, fast return speed and can effectively improve the working efficiency of the keyboard testing device.

As a preferred embodiment, as shown in Figure 3, the upper end of the movable shaft hole 11 of the striking head housing 1 corresponds to the upper magnetic segment 21 of the movable shaft 2, and the upper guide sleeve 6 is embedded, and the upper magnetic segment 21 of the movable shaft 2 It can be embedded in the central hole of the upper guide sleeve relatively up and down; further, the lower end of the movable shaft hole 11 of the striking head shell 1 corresponds to the lower non-magnetic section 22 of the movable shaft 2 and is embedded with the lower guide sleeve 7 The lower non-magnetic section 22 of the movable shaft 2 can be embedded in the central hole of the lower guide sleeve so as to move up and down.

In the process of the movable shaft 2 moving up and down relative to the striking head shell 1, the upper guide sleeve cooperates with the upper magnetic section 21 of the movable shaft 2 and the lower guide sleeve cooperates with the lower non-magnetic section 22 of the movable shaft 2. The new type can ensure that the movable shaft 2 moves up and down accurately and smoothly, thereby effectively improving the hitting accuracy of the case.

The above content is only a preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and scope of application. The content of this specification should not be understood as Limitations on the Invention.

Claims (4)

1. one kind is applied to the button striking head of keyboard tester, it is characterized in that: include and inner coil winding is installed and striking head shell (1) in cylindrical shape, the core of striking head shell (1) offers the movable axis hole (11) that the axis direction along striking head shell (1) runs through up and down completely, movable axis (2) can be embedded with in the movable axis hole (11) of striking head shell (1) relatively up and downly, the upper end of movable axis (2) extends to the upper end side of striking head shell (1), the bottom of movable axis (2) extends to the lower end side of striking head shell (1),

Movable axis (2) includes coaxially arranged upper magnetic sections (21) and is positioned at lower non magnetic section (22) of magnetic sections (21) lower end side, the upper end of lower non magnetic section (22) is connected with the bottom of upper magnetic sections (21), lower non magnetic section of (22) bottom of movable axis (2) is equiped with in the lower end side of striking head shell (1) and knocks contact (3), there is glue head (4) upper magnetic sections (21) upper end of movable axis (2) in the upper end side cover card of striking head shell (1), upper magnetic sections (21) upper end of movable axis (2) is in glue head (4), back-moving spring (5) is set with between striking head shell (1), the upper end of back-moving spring (5), bottom respectively with the glue head (4) of corresponding side, striking head shell (1) upper end abuts.

2. a kind of button striking head being applied to keyboard tester according to claim 1, it is characterized in that: upper magnetic sections (21) inlay card of the corresponding described movable axis (2) in movable axis hole (11) upper end of described striking head shell (1) has upper pilot sleeve (6), and the upper magnetic sections (21) of movable axis (2) can be flush-mounted in the center pit of guide thimble relatively up and downly.

3. a kind of button striking head being applied to keyboard tester according to claim 2, it is characterized in that: lower non magnetic section of (22) inlay card of the corresponding described movable axis (2) in movable axis hole (11) bottom of described striking head shell (1) has lower pilot sleeve (7), and lower non magnetic section (22) of movable axis (2) can be flush-mounted in the center pit of lower guide thimble relatively up and downly.

4. a kind of button striking head being applied to keyboard tester according to claim 3, is characterized in that: the external diameter value of described striking head shell (1) is 10mm-18mm.