CN209560044U - A keyboard test key tapping head - Google Patents

Abstract

The utility model relates to the field of keyboard testing devices, in particular to a keyboard testing key striking head, which comprises a cylindrical shell, a magnetic movable shaft, an iron core connecting rod, a non-magnetic connecting rod and a testing rubber head, wherein the shell is internally provided with a through hole which penetrates through the shell up and down along the axial direction, the through hole forms a holding cavity in the shell, the magnetic movable shaft can be movably arranged in the holding cavity up and down, a coil is arranged in the holding cavity, the coil is wound around the magnetic movable shaft, one side of the upper end of the shell is also provided with a wire hole which is communicated with the holding cavity, the coil is connected with a wire, the wire is led out of the shell from the holding cavity through a wire hole, the upper end of the magnetic movable shaft is provided with an iron core block, the iron core connecting rod is connected with the lower end of the magnetic movable shaft, the non-, the resilience of the keyboard key and the on-off of the contact can be better tested, and the sensitivity of the key can also be tested.

Description

A keyboard test key tapping head

technical field

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

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 keyboard production process, 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 the continuity of the contacts. There are keyboard testing devices in various forms in the prior art; wherein, for the keyboard testing device, it mainly completes the key hitting action of the keyboard to be tested through the key hitting head, but the existing keyboard testing device hitting the head It can only test the rebound and the on-off of the contacts, but not the sensitivity of the keyboard.

Contents of the invention

In order to solve the above problems, the utility model provides a keyboard test key tapping head capable of testing the sensitivity of the keyboard.

In order to achieve the above object, the technical solution adopted by the utility model is: a keyboard test button tapping head, including a cylindrical shell, a magnetic movable shaft, an iron core connecting rod, a non-magnetic connecting rod and a testing rubber head, the The inside of the housing is provided with a through hole penetrating up and down along the axial direction, and the through hole forms a housing cavity in the housing, and the magnetic movable shaft can be arranged in the housing cavity up and down, and the housing cavity is provided with A coil, the coil is wound around the magnetic movable shaft, and a wire hole communicating with the accommodating cavity is provided on one side of the upper end of the housing, the coil is connected with a wire, and the wire is drawn from the accommodating cavity to the housing through the wire hole Externally, the upper end of the magnetic movable shaft is provided with an iron core block, the iron core connecting rod is connected to the lower end of the magnetic movable shaft, the non-magnetic connecting rod is connected to the lower end of the iron core connecting rod, and extends to the outside of the lower end of the housing, the The test rubber head is sleeved on the lower end of the non-magnetic connecting rod.

Further, the casing includes a cylindrical shell and an upper cover, and the lower end of the upper cover is riveted and fixed to the upper end of the shell.

Further, the upper side inside the housing is an accommodating cavity, the diameter of which is smaller than the diameter of the through hole of the upper cover, the lower side of the housing is a circular through hole, and the through hole on the lower side of the housing The diameter is smaller than the diameter of the accommodating cavity.

Wherein, the diameter of the through hole of the upper cover is 8.1 mm, and the diameter of the housing is 13 mm.

Further, the upper end of the through hole inside the upper cover is also provided with a protruding block that limits the position of the core block, and the protruding block is integrally formed in the through hole of the upper cover.

Further, the lower end of the housing is also connected with an integrally formed cylindrical end, the surface of the cylindrical end is provided with threads, and the diameter of the cylindrical end is 6mm.

The beneficial effect of the utility model is that: in the natural state of the keyboard testing head of the utility model, the movable shaft and the testing rubber head are drooping due to gravity, and when the testing rubber head is in contact with the keyboard, the resistance of the keyboard will make the movable shaft Move upward, at this time, the test rubber head can test the sensitivity of the keyboard through the gravity of the movable shaft; when the movable shaft moves upward to a certain position, the coil is energized and generates a magnetic field, and the magnetic force of the magnetic field acts on the movable shaft and drives the movable shaft Move down to make the test rubber head hit the keyboard key; when the coil is powered off, the magnetic field disappears, and the key is reset while driving the movable shaft to move up, thus completing the keyboard knock test. The test rubber head of the utility model tests the sensitivity of the keyboard through the gravity of the movable shaft, and the return of the movable shaft is completed by the elastic force of the key, which can better test the rebound of the keyboard key and the on-off of the contact, and can also test the key Sensitivity, improve product quality.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model.

Fig. 2 is a perspective view of the utility model.

Description of reference numerals: 1. shell; 11. housing; 12. upper cover; 13. accommodating cavity; 14. cylindrical end; 2. movable shaft; .Test rubber head; 6. Coil; 7. Wire; 8. Iron core block.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present utility model.

Please refer to Figure 1-2, the utility model relates to a keyboard test key tapping head, including a cylindrical shell 1, a magnetic movable shaft 2, an iron core connecting rod 3, a non-magnetic connecting rod 4 and a test rubber head 5. The inside of the housing 1 is provided with a through hole penetrating up and down along the axial direction, and the through hole forms an accommodating cavity 13 in the housing 1, and the magnetic movable shaft 2 can be arranged in the accommodating cavity 13 so as to move up and down The accommodating cavity 13 is provided with a coil 6, and the coil 6 is wound around the magnetic movable shaft 2, and a wire hole communicating with the accommodating cavity 13 is also provided on the side of the upper end of the housing 1, and the coil 6 is connected to There is a wire 7, and the wire 7 is drawn out from the housing chamber 13 through the wire hole to the outside of the casing 1, and the upper end of the magnetic movable shaft 2 is provided with an iron core block 8, and the iron core connecting rod 3 is connected to the lower end of the magnetic movable shaft 2 , the non-magnetic connecting rod 4 is connected to the lower end of the iron core connecting rod 3 and extends to the outside of the lower end of the casing 1 , and the test rubber head 5 is sleeved on the lower end of the non-magnetic connecting rod 4 .

In this embodiment, the iron core block and the movable shaft 2 , and the movable shaft 2 and the iron core connecting rod 3 are integrated structures, and the non-magnetic connecting rod 4 is plugged and fixed with the lower end of the iron core connecting rod 3 .

Further, the housing 1 includes a cylindrical housing 11 and an upper cover 12 , the lower end of the upper cover 12 is riveted and fixed to the upper end of the housing 11 .

Further, the upper side inside the housing 11 is an accommodating chamber 13, the diameter of the accommodating chamber 13 is smaller than the diameter of the through hole of the upper cover 12, the lower side of the housing 11 is a circular through hole, the housing The diameter of the through hole on the lower side of 11 is smaller than the diameter of the accommodating cavity 13 .

Wherein, the diameter of the through hole of the upper cover 12 is 8.1 mm, and the diameter of the housing 11 is 13 mm.

Further, the upper end of the inner through hole of the upper cover 12 is also provided with a protruding block that limits the position of the core block 8 , and the protruding block is integrally formed in the through hole of the upper cover 12 .

By adopting the above solution, the movable shaft 2 can be limited, so that the movable shaft 2 can move up by a limited distance and position.

Further, the lower end of the housing 11 is also connected with an integrally formed cylindrical end 14 , the surface of the cylindrical end 14 is threaded, and the diameter of the cylindrical end 14 is 6 mm.

In this embodiment, its working process is as follows: in the natural state, the movable shaft 2 and the test rubber head 5 are drooping due to gravity, and when the test rubber head 5 is in contact with the keyboard, the resistance of the keyboard will make the movable shaft 2 upward At this time, the test rubber head 5 can test the sensitivity of the keyboard through the gravity of the movable shaft 2; when the movable shaft 2 moves upward to a certain position, the coil 6 is energized and generates a magnetic field, and the magnetic force of the magnetic field acts on the movable shaft 2 and drives The movable shaft 2 moves downward, so that the test rubber head 5 hits the keyboard key; when the coil 6 is powered off, the magnetic field disappears, and the movable shaft 2 is driven upward while the key is reset, thereby completing the keyboard tapping test. In this embodiment, the rubber head 5 tests the sensitivity of the keyboard through the gravity of the movable shaft 2, and the return of the movable shaft 2 is completed by the elasticity of the keys, which can better test the rebound of the keyboard keys and the on-off of the contacts, and also It can test the sensitivity of keys and improve the quality of products.

In this embodiment, the magnitude of the magnetic field generated by the coil 6 can be controlled by controlling the magnitude of the voltage and current connected to the coil 6 , thereby controlling the force with which the movable shaft 2 hits the key. Wherein, the dynamics that the movable shaft 2 of the present embodiment hits the key is 30g-150g, and the precision is ± 2g; Make adjustments.

In this embodiment, since the lower end of the magnetic movable shaft 2 is a non-magnetic connecting rod 4, when the coil 6 is powered off and the movable shaft 2 is reset, the movable shaft 2 can reduce the magnetic effect and cause the return speed to slow down The problem is that this structural design can effectively increase the return speed of the movable shaft 2 . This embodiment can ensure that the movable shaft 2 moves up and down accurately and smoothly, thereby effectively improving the accuracy of keystrokes.

The above embodiment is only a description of the preferred implementation of the utility model, and is not intended to limit the scope of the utility model. On the premise of not departing from the design spirit of the utility model, ordinary engineers and technicians in the field made the technical solution of the utility model Various modifications and improvements should fall within the protection scope determined by the claims of the present utility model.

Claims (6)

1. a kind of keyboard test key striking head, it is characterised in that: shell, magnetic adjustable axis, iron core including cylindrical shape connect Extension bar, non magnetic connecting rod and test rubber head, the interior of shell are in axial direction equipped with perforative through-hole, the through-hole up and down and exist Accommodating cavity is formed in shell, the magnetic adjustable axis can be arranged in accommodating cavity up and downly, and line is equipped in the accommodating cavity Circle, the coil are wrapped in around magnetic adjustable axis, and the upper shell side is additionally provided with the wire guide communicated with accommodating cavity, institute State coil and be connected with conducting wire, the conducting wire from accommodate it is intracavitary shell exterior is drawn out to by wire hole, on the magnetic adjustable axis End is equipped with iron core block, and the iron core connecting rod is connect with magnetic adjustable axis lower end, under the non magnetic connecting rod and iron core connecting rod End connection, and shell lower end outside is extended to, the test rubber head is socketed in non magnetic connecting rod lower end.

2. a kind of keyboard test key striking head according to claim 1, it is characterised in that: the shell includes cylindrical body The shell and upper cover of shape, the upper cover lower end and the riveting of shell upper end are fixed.

3. a kind of keyboard test key striking head according to claim 2, it is characterised in that: be on the upside of the enclosure interior Accommodating cavity, the diameter of the accommodating cavity are less than upper cover through-hole diameter, are circular through hole on the downside of the shell, lead on the downside of the shell The diameter in hole is less than accommodating cavity diameter.

4. a kind of keyboard test key striking head according to claim 3, it is characterised in that: the upper cover through-hole diameter is 8.1mm, the diameter of the housing are 13mm.

5. a kind of keyboard test key striking head according to claim 2, it is characterised in that: in the upper cover interior bone End is additionally provided with the casting lug thereon to the limit of iron core block, and the casting lug thereon integrated molding is arranged in the through-hole of upper cover.

6. a kind of keyboard test key striking head according to claim 2, it is characterised in that: the shell lower end is also connected with There is integrally formed cylindrical end, the cylinder end surfaces are equipped with screw thread, and the cylindrical end diameter is 6mm.