CN211319990U

CN211319990U - Touch sounding key structure for keyboard

Info

Publication number: CN211319990U
Application number: CN202020386167.7U
Authority: CN
Inventors: 尤新喜
Original assignee: Dongguan Datu Photoelectric Co ltd
Current assignee: Guangdong Ruixun Electronic Technology Co.,Ltd.
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-08-21
Anticipated expiration: 2030-03-24

Abstract

The utility model discloses a touch sounding key structure for a keyboard, wherein a key shaft and an elastic reset piece for resetting the key shaft are arranged in a key seat, a linkage frame is arranged at one side part of the key shaft, a sounding trigger piece independent of the key shaft is arranged in the linkage frame, a tension spring is arranged between the sounding trigger piece and the linkage frame, and the linkage frame drives the sounding trigger piece to move downwards through the tension spring; when the key shaft is pressed downwards, the linkage frame drives the sounding trigger to downwards trigger the electric element to output a switch signal, and the striking baffle plate frame gives out a striking sound. The sounding trigger piece can achieve good pressing touch and key sound, and can well trigger an electric element to obtain a signal; the key seat is provided with a positioning fixing bulge, so that the key shaft cannot impact the PCB, and meanwhile, the key seat is also provided with a lock catch structure, so that the key seat can be stably fixed on the PCB; the application has the advantages of simple structure, low production cost and high yield.

Description

Touch sounding key structure for keyboard

Technical Field

The utility model relates to a button field, concretely relates to sense of touch sound production button structure for keyboard.

Background

A keyboard is a command and data input device used to operate equipment and also refers to a set of function keys (e.g., typewriter, computer keyboard) arranged to operate a machine or equipment through a system. The keypad keys are generally classified into a hall sensing type and a photoelectric switching type, in which the photoelectric switching type keypad keys utilize a photoelectric coupling technology, an optical path is formed by a transmitting element and a receiving element by using an optical principle and a photoelectric coupling technology, and a circuit switch is implemented by a light blocking member for performing the cutting off and the conduction of the optical path to change the circuit impedance. The hall induction type is to induce a magnetic field change trigger signal by using a hall switch. Compared with the traditional contact type keyboard, the photoelectric switch type and Hall induction type keyboards have long service life, and the hand feeling change of the keys is very small after the keyboard is used for a long time. However, the new electric element is used for obtaining the trigger signal, so that the hand touch feeling and the sound of the original contact switch are lacked or are not easy to realize, and particularly, the existing photoelectric switch type and Hall induction type keyboard keys are only provided with one pressing shaft, so that the hand touch feeling and the sound are difficult to generate during pressing, the touch feeling of the keys is not obvious, and other trigger prompts do not exist during pressing. Aiming at the technical defect, the structure of the switch key needs to be improved so as to realize the touch feeling and the sound, and the industrial manufacture with low cost and high efficiency is easy to realize.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model aims at providing a sense of touch sound production button structure for keyboard that has good sense of touch and sound production.

In order to realize the technical purpose, the utility model discloses a scheme is: a touch sounding key structure for a keyboard is used for being matched with an electrical element to output a switch signal, and comprises a key seat arranged on a PCB (printed circuit board), wherein a key shaft and an elastic reset piece for resetting the key shaft are arranged in the key seat; the key seat is also internally provided with a baffle frame for jacking the sounding trigger piece and a pedestal matched with the sounding trigger piece to sound; when the key shaft is pressed downwards, the linkage frame drives the sounding trigger to move horizontally away from the baffle frame and downwards trigger the electric element to output a switch signal under the action of the tension spring, and the striking pedestal emits striking sound.

Preferably, the lower part of one side of the sounding trigger part is provided with an inclined plane boss, the inclined plane of the inclined plane boss is in contact with the frame body on the same side of the linkage frame, and the linkage frame downwards extrudes the inclined plane boss to enable the sounding trigger part to horizontally move when the key is pressed;

the upper portion of the other side of the sounding trigger piece is provided with a reset wedge block, the linkage frame and the frame body on the same side of the reset wedge block are provided with reset rails, the wedge surfaces of the reset wedge blocks correspond to the reset rails, after the pressed key shafts are loosened, the elastic reset pieces drive the key shafts and the linkage frame to reset in an ascending mode, the reset rails lift the reset wedge blocks to enable the sounding trigger piece to reset in an ascending mode, and meanwhile the reset rails extrude the reset wedge blocks to enable the sounding trigger piece to reset horizontally.

Preferably, the electrical element is a light-to-tube connector attached to the PCB, the bottom end of the sounding trigger is a light path switch for blocking the conduction of a light path, the sounding trigger does not extend out of the bottommost part of the key base, and the sounding trigger is not in contact with the PCB.

Preferably, the electric element is a Hall sensor, the bottom end of the sounding trigger piece is a magnetic end, the sounding trigger piece does not extend out of the bottommost part of the key seat, and the sounding trigger piece is not in contact with the PCB.

Preferably, the bottom of the key seat is also provided with a positioning fixing bulge, the PCB is provided with an accommodating positioning hole, and the positioning fixing bulge is embedded in the accommodating positioning hole;

and a lock catch is further arranged on one side of the positioning fixing protrusion, and when the positioning fixing protrusion is inserted into the accommodating positioning hole, the lock catch locks the positioning fixing protrusion on the PCB.

Preferably, the lock catch is an outward-expanding elastic lock catch, and is compressed and contracted when the positioning fixing protrusion is inserted into the accommodating positioning hole, and is expanded at the bottom of the PCB when the lock catch part passes through the accommodating positioning hole.

The utility model has the advantages that the sound production trigger piece is ingenious, good pressing touch and button sound can be realized, and the sound production trigger piece can well trigger the electric element to obtain signals; meanwhile, the key seat is provided with a positioning fixing bulge, so that the key shaft cannot impact the PCB, and the key seat can be stably fixed on the PCB by the aid of the lock catch structure; the application has the advantages of simple structure, low production cost and high yield.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of a top view of the present invention;

FIG. 3 is an exploded view of the present invention;

FIG. 4 is a schematic view of a partial structure of a key pad viewed from above;

FIG. 5 is a schematic view of a partial structure of the key pad of the present invention;

fig. 6 is a first state reference diagram of the present invention;

fig. 7 is a state reference diagram of the present invention.

The notation is as follows: the device comprises a PCB (printed circuit board) 1, an accommodating positioning hole 101, a key seat 2, a positioning fixing protrusion 201, a lock catch 202, a key shaft 3, a linkage frame 301, a reset rail 302, an elastic reset piece 4, a tension spring 5, a sounding trigger piece 6, a reset wedge 601, an inclined boss 602, a baffle plate frame 7 and an electric element 8.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-7, a specific embodiment of the present invention is a touch sounding key structure for a keyboard, wherein the key is used for cooperating with an electrical component 8 to output a switching signal, the structure includes a key base 2 installed on a PCB 1, the key base 2 is internally provided with a key shaft 3 and an elastic reset member 4 for resetting the key shaft 3, the elastic reset member 4 can be a spring or a silica gel member, a linkage frame 301 is disposed at one side of the key shaft 3, a sounding trigger 6 independent of the key shaft 4 is installed in the linkage frame 301, a tension spring 5 is disposed between the sounding trigger 6 and the linkage frame 301, and the linkage frame 301 drives the sounding trigger 6 to move downward through the tension spring 5; a baffle plate frame 7 for jacking the sounding trigger piece 6 and a pedestal matched with the sounding trigger piece 6 to sound are also arranged in the key seat 2; when the key shaft 3 is pressed downwards, the linkage frame 301 drives the sounding trigger 6 to move horizontally away from the baffle frame 7 and downwards triggers the electric element 8 to output a switch signal under the action of the tension spring 5, and the striking pedestal makes a striking sound.

To facilitate understanding of the positional relationship between the sound emitting trigger and the electrical component, the following are listed: a partial state of the structure in which the key pad and the like are removed is referred to fig. 6 and 7. Referring to fig. 6, in the initial state, the key shaft is not pressed, the sounding trigger is located at the left side position in the linkage frame, the tension spring 5 does not store force, and the sounding trigger is located above the electrical element (the baffle frame is not shown in the figure, and the sounding trigger is located above the baffle frame at this time). Referring to fig. two in the state of fig. 7, in order to trigger the signal state, the key shaft is pressed down to a certain position, the sounding trigger piece has completed striking and sounding, the bottom of the sounding trigger piece triggers the electrical element, the right side wall of the sounding trigger piece is contacted with the inner wall of the right side of the linkage frame after the sounding trigger piece is horizontally moved to the right, and the tension spring 5 has been released and does not store power (the baffle frame is not shown in the figure, and the sounding trigger piece is located on the side surface of the baffle frame).

The lower part of one side of the sounding trigger piece 6 is provided with an inclined plane boss 602, the inclined plane of the inclined plane boss 602 is in contact with the frame body on the same side of the linkage frame 301, when a key is pressed, the linkage frame 301 downwards extrudes the inclined plane boss 602 to enable the sounding trigger piece 6 to horizontally move, at the moment, the tension spring 5 is always extruded to accumulate force until the sounding trigger piece 6 is horizontally moved away from the top baffle plate frame 7, the tension spring 5 is released to enable the sounding trigger piece 6 to be rapidly ejected downwards, and the striking pedestal emits crisp striking sound.

The sounding trigger 601, the linkage frame 301 and the reset wedge 601 are provided with a reset rail 302 in the same side frame body, the wedge surface of the reset wedge 601 corresponds to the reset rail 302, after the pressed key shaft 3 is released, the elastic reset piece 6 drives the key shaft 3 and the linkage frame 301 to move upwards for resetting, the reset rail 302 pulls the reset wedge 601 to enable the sounding trigger 6 to move upwards for resetting, and meanwhile, the reset rail 302 extrudes the reset wedge 601 to enable the sounding trigger 6 to horizontally reset to the baffle frame 7.

In order to obtain the trigger signal conveniently, the electrical element 8 is a light-to-tube device which is attached to the PCB, the bottom end of the sounding trigger 6 is a light path switch which blocks the conduction of a light path, the sounding trigger 6 does not extend out of the bottommost part of the key base 2, and the sounding trigger 6 is not in contact with the PCB 1. The light pair tube consists of a light-emitting element and a photosensitive element, an effective light signal emitted by the light-emitting element can be received by the photosensitive element, and the light path is smooth at the moment; the switching signal can be formed by switching the optical path. The light emitting element can be a light emitting diode or a laser diode, and the photosensitive element can be a photosensitive diode or a phototriode.

In order to obtain the trigger signal conveniently, the electric element 8 is a hall sensor, and the bottom end of the sounding trigger 6 is a magnetic end.

In order to better perform installation and fixation, the bottom of the key base 2 is further provided with a positioning fixing protrusion 201, the PCB board 1 is provided with an accommodating positioning hole 101, and the positioning fixing protrusion 201 is embedded in the accommodating positioning hole 101;

the positioning fixing protrusion 201 is further provided with a latch 202 on one side, and when the positioning fixing protrusion 201 is inserted into the receiving positioning hole 101, the latch 202 locks the positioning fixing protrusion 201 on the PCB board 1. The lock catch is an outward-expanding elastic lock catch, and is extruded and contracted when the positioning fixing protrusion is inserted into the accommodating positioning hole, and is expanded at the bottom of the PCB when the lock catch part passes through the accommodating positioning hole.

The sound-producing trigger piece is ingenious, good pressing touch and key sound can be achieved, and the sound-producing trigger piece can well trigger the electric element to obtain a signal; meanwhile, the key seat is provided with a positioning fixing bulge, so that the key shaft cannot impact the PCB, and the key seat can be stably fixed on the PCB by the aid of the lock catch structure; the application has the advantages of simple structure, low production cost and high yield.

The above, only do the preferred embodiment of the present invention, not used to limit the present invention, all the technical matters of the present invention should be included in the protection scope of the present invention for any slight modification, equivalent replacement and improvement of the above embodiments.

Claims

1. The utility model provides a sense of touch sound production button structure for keyboard, the button is used for cooperation electrical element output switch signal, including installing the key seat on the PCB board, be equipped with a key shaft in the key seat and supply the elasticity that the key shaft resets, its characterized in that: a linkage frame is arranged at one side part of the key shaft, a sounding trigger piece independent of the key shaft is installed in the linkage frame, a tension spring is arranged between the sounding trigger piece and the linkage frame, and the linkage frame drives the sounding trigger piece to move downwards through the tension spring; the key seat is also internally provided with a baffle frame for jacking the sounding trigger piece and a pedestal matched with the sounding trigger piece to sound; when the key shaft is pressed downwards, the linkage frame drives the sounding trigger to move horizontally away from the baffle frame and downwards trigger the electric element to output a switch signal under the action of the tension spring, and the striking pedestal emits striking sound.

2. A tactile sound emitting key structure for a keyboard according to claim 1, wherein: the lower part of one side of the sounding trigger piece is provided with an inclined plane boss, the inclined plane of the inclined plane boss is contacted with the frame body on the same side of the linkage frame, and the linkage frame downwards extrudes the inclined plane boss to enable the sounding trigger piece to horizontally move when the key is pressed;

the upper portion of the other side of the sounding trigger piece is provided with a reset wedge block, the frame body on the same side of the linkage frame and the reset wedge block is provided with a reset transverse bar, the wedge surface of the reset wedge block corresponds to the reset transverse bar, after the pressed key shaft is loosened, the elastic reset piece drives the key shaft and the linkage frame to reset in an ascending mode, the reset transverse bar lifts the reset wedge block to enable the sounding trigger piece to reset in an ascending mode, and meanwhile the reset transverse bar extrudes the reset wedge block to enable the sounding trigger piece to reset horizontally.

3. A tactile sounding key structure for a keyboard according to claim 2, characterized in that: the electric element is a light-to-tube element pasted on the PCB, the bottom end of the sounding trigger piece is a light path switch for blocking the conduction of a light path, the sounding trigger piece does not stretch out of the bottommost part of the key seat, and the sounding trigger piece is not in contact with the PCB.

4. A tactile sounding key structure for a keyboard according to claim 2, characterized in that: the electric element is a Hall sensor, the bottom end of the sounding trigger piece is a magnetic end, the sounding trigger piece does not extend out of the bottommost part of the key seat, and the sounding trigger piece is not in contact with the PCB.

5. A tactile sound-emitting key structure for a keyboard according to any one of claims 1 to 4, wherein: the bottom of the key seat is also provided with a positioning fixing bulge, the PCB is provided with an accommodating positioning hole, and the positioning fixing bulge is embedded in the accommodating positioning hole; and a lock catch is further arranged on one side of the positioning fixing protrusion, and when the positioning fixing protrusion is inserted into the accommodating positioning hole, the lock catch locks the positioning fixing protrusion on the PCB.

6. A tactile sound-emitting key structure for a keyboard according to claim 5, wherein: the lock catch is an outward-expanding elastic lock catch, and is extruded and contracted when the positioning fixing protrusion is inserted into the accommodating positioning hole, and is expanded at the bottom of the PCB when the lock catch part passes through the accommodating positioning hole.