WO2018121423A1

WO2018121423A1 - Ultrathin pushbutton switch

Info

Publication number: WO2018121423A1
Application number: PCT/CN2017/117912
Authority: WO
Inventors: 吴福喜
Original assignee: 东莞市凯华电子有限公司
Priority date: 2016-12-26
Filing date: 2017-12-22
Publication date: 2018-07-05
Also published as: CN206441650U

Abstract

An ultrathin pushbutton switch comprises a base (1), a cap (2) covering the base (1), and a guiding core (3), a torsion spring (4), a conductive component (5) and a guiding core sliding block (6) respectively disposed on the base (1). A guiding column (11) protruding upwards is arranged at a central location of the base (1). A guiding hole (12) is formed at the center of the guiding column (11). The guiding core sliding block (6) is located at one side of the guiding core (3). An annular slot (31) is formed at a lower end of the guiding core (3). An insertion column (32) protruding downwards is arranged at a central section of the annular slot (31) and is inserted into the guiding hole (12) at the base (1) to insert the guiding column (11) of the base (1) into the annular slot (31). A spring (7) is sleeved around outer sides of the guiding column (11) and the insertion column (32). Slots are provided at a lower end surface of the guiding core (3) to form a plurality of guiding core protruding pieces (33) at the lower end surface of the guiding core (3). A plurality of recesses (16) are provided to insert therein the guiding core protruding pieces (33), or a plurality of holes (16') are provided to pass therethrough the guiding core protruding pieces (33). The pushbutton switch has a reasonable structure design, reduced thickness, enhanced pressing balance and stability, and enhanced button pressing feel.

Description

Ultra-thin key switch

Technical field

The utility model relates to a key switch, in particular to an ultra-thin key switch.

Background technique

Many operations of electronic equipment require the use of a button switch as an input means. The quality of the key switch determines the experience of the input device, which requires the button switch to have a good feel and sound. The existing thin key switch using a metal piece as a moving contact piece cannot always have a pressing feel like a large key switch because of the limitation of the internal space of the switch. At the same time, due to the irrational design of the internal structure, the compression stability is poor, resulting in unsmooth use and affecting normal use.

Therefore, due to the complexity of the internal structure of the push button switch, the existing push button switch cannot meet the requirements of the thin design when the pressing feel and the pressing stability are satisfied.

Utility model content

In view of the above deficiencies, the object of the present invention is to provide an ultra-thin key switch with reasonable structural design, reduced thickness, improved press balance and press stability, and enhanced pressing feel.

The technical solution adopted by the utility model to achieve the above object is:

An ultra-thin key switch includes a base and a cover attached to the base, the cover has an opening, and further comprises a guiding core, a torsion spring and a guide respectively arranged on the base a guiding member and a guiding core block, wherein a guiding post is protruded upward from a center of the upper end of the base, a guiding hole is defined in a center of the guiding column, and a guiding hole for inserting the conduction component is disposed at one end of the guiding base The other end of the guiding core is provided with a torsion spring slot; the guiding core is located at the side of the guiding core, and the lower end of the guiding core defines an annular slot, and the annular slot is convex downward The insertion post is inserted into the guiding hole of the base, and the guiding post of the base is inserted into the annular slot, and the guiding post and the outer side of the plug are sleeved with a spring; the lower end surface of the guiding core is opened Digging the groove to form a plurality of core lobes on the lower end surface of the lead core; on the pedestal and outside the guide post, a plurality of retaining grooves for guiding the lobes of the lead core are opened, or the ribs of the lead core are worn A number of yielding holes.

As a further improvement of the present invention, an annular receiving groove is defined in an upper end edge of the base, and a balance bar assembly is disposed in the annular receiving groove, the balance bar assembly is mainly composed of a split first balance bar and a second The balance bar is formed by crossing, and the first balance bar and the second balance bar are both disposed at the lower end of the guide core.

As a further improvement of the present invention, the first balance bar and the second balance bar are both U-shaped, and the open end of the first balance bar and the open end of the second balance bar are disposed to cross each other; the first balance The rod includes a first transverse rod and a first longitudinal rod respectively connected to the two ends of the first transverse rod, the first longitudinal rod end is provided with a first bending hook outwardly; the second balance The rod includes a second transverse rod and a second longitudinal rod respectively connected to the two ends of the second horizontal rod, the second longitudinal rod end is provided with a second hook bent inward; the first transverse The rod is located at a lower end of one side of the core, and the second horizontal rod is located at a lower end of the other side of the core.

As a further improvement of the present invention, the upper end of the lead post of the lead core defines a mounting hole in which an LED lamp is mounted.

As a further improvement of the present invention, the conduction component comprises a static piece and a moving piece.

The beneficial effects of the utility model are:

(1) Through the design of the joint of the lead core and the retaining groove or the retaining hole, the position groove or the retaining hole is used as the avoidance of the base, which provides a space for the lead of the guiding core to make the guiding core and the base The mating length before sliding between each other is lengthened, and the core pressing does not cause a click feeling; at the same time, the height of the button switch is lowered, so that the overall thickness of the button switch is thinner;

(2) The first balance bar and the second balance bar with built-in split type, in the process of moving the lead core up and down, the first balance bar and the second balance bar are oscillated up and down to achieve press balance, press balance and press stability Significantly increased;

(3) By the setting of the torsion spring, the pressing feel is enhanced, and the pressing sound is emitted.

The above is an overview of the technical solutions of the utility model, and the present invention will be further described below in conjunction with the drawings and specific embodiments.

DRAWINGS

Figure 1 is an assembly view of the present invention;

2 is a schematic structural view of a base of the present invention;

Figure 3 is a cross-sectional view of the present invention;

Figure 4 is a schematic structural view of the balance bar assembly of the present invention;

Figure 5 is a schematic structural view of the bottom of the guide core of the present invention;

Figure 6 is a schematic structural view of the bottom of the base of the present invention;

Figure 7 is another schematic structural view of the bottom of the base of the present invention;

Figure 8 is a schematic view showing the external structure of the utility model in a free state;

Figure 9 is a cross-sectional view of the utility model in a free state;

Figure 10 is another cross-sectional view of the utility model in a free state;

Figure 11 is a schematic view showing the external structure of the utility model in a pressed state;

Figure 12 is a cross-sectional view of the utility model in a depressed state;

Figure 13 is another cross-sectional view of the present invention in a depressed state.

detailed description

The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings and preferred embodiments.

Referring to FIG. 1 to FIG. 13 , the embodiment provides an ultra-thin key switch including a base 1 and a cover 2 attached to the base 1 . The cover 2 defines an opening 21 and includes The guide core 3, the torsion spring 4, the conduction assembly 5 and the core guide slider 6 are disposed on the base 1. The center of the upper end of the base 1 is convexly provided with a guide post 11 at the center of the guide post 11 A guiding hole 12 is defined downwardly, and one end of the base 1 is provided with a conducting component slot 14 for inserting the conductive component 5, and the other end is provided with a torsion spring slot 15 for inserting the torsion spring 4; the guiding core The slider 6 is located at the side of the guiding core 3. The lower end of the guiding core 3 defines an annular slot 31. A protruding post 32 is protruded downwardly from the central portion of the annular slot 31. The insertion post 32 is inserted into the guiding hole 12 of the base 1. At the same time, the guiding post 11 of the base 1 is inserted into the annular slot 31, and a spring 7 is sleeved on the outer side of the guiding post 11 and the insertion post 32; a digging groove is formed in the lower end surface of the guiding core 3 to make the guiding core 3 lower end faces form a plurality of core lobes 33. At the same time, the lead rib 33 is provided with a yield space in two ways. One way is to provide a plurality of places on the pedestal 1 and outside the guide post 11 for the guide rib 33 to extend. a groove 16 , and the depth of the yielding groove 16 is exactly equal to the height of the guiding core 33; the other way is: on the base 1 and located outside the guiding column 11 , the guiding core 33 passes through A number of yielding holes 16'.

As shown in FIG. 1-4, an annular receiving groove 13 is defined in an upper end edge of the base 1, and a balance bar assembly 8 is disposed in the annular receiving groove 13. The balance bar assembly 8 is mainly separated by a first type. The balance bar 81 is formed to intersect with the second balance bar 82. The first balance bar 81 and the second balance bar 82 are both disposed at the lower end of the guide core 3.

As shown in FIG. 1 and FIG. 3, a mounting hole 321 is defined in the upper end of the insertion post 32. The LED light 10 is mounted in the mounting hole 321 to realize an intermediate light-emitting function.

As shown in FIG. 4 , the first balance bar 81 and the second balance bar 82 are both U-shaped, and the open end of the first balance bar 81 and the open end of the second balance bar 82 are disposed to cross each other. At the same time, the first balance bar 81 includes a first horizontal rod 811 and a first longitudinal rod 812 respectively connected to the two ends of the first horizontal rod 811. The first longitudinal rod 812 is provided with an outward bend. a first bending hook 813; the second balance bar 82 includes a second transverse rod 821, and a second longitudinal rod 822 connected to the two ends of the second transverse rod 821, the second longitudinal rod 822 end The second bending hook 823 is bent inwardly; the first transverse rod 811 is located at the lower end of the guiding core 3, and the second transverse rod 821 is located at the lower end of the other side of the guiding core 3.

In the embodiment, the conduction component 5 includes a static piece 51 and a movable piece 52.

The working principle of the utility model is:

As shown in FIGS. 11 to 13, when the guide core 3 is pressed downward, the insertion post 32 of the guide core 3 is inserted into the guide hole 12 of the base 1, and the core projection 33 of the lower end of the guide core 3 is inserted into the base 1 In the retaining groove 16 or the retaining hole 16', the guiding post 11 of the base 1 is inserted into the annular slot 31 of the guiding core 3, and the spring 7 is compressed to touch the static piece 51 of the conducting assembly 5 The sheets 52 are in contact with each other to realize the conduction function of the button switches; at the same time, the lower ends of the guiding cores 3 respectively apply the first horizontal rods 811 of the first balance rod 81 and the second horizontal rods 821 of the second balance rod 82. Under the force, the first balance bar 81 and the second balance bar 82 swing up and down to maintain the press balance.

As shown in FIG. 8 to FIG. 10, when the force of pressing the lead metal 3 disappears, the core 3 is reset upward by the elastic restoring force of the spring 7, and the upper end passes through the opening 21 of the cover 2 to return to the original position. At the same time, the static piece 51 of the conduction component 5 is separated from the movable piece 52, and the function of opening the key switch is realized.

The main points of the utility model are:

(1) Let the position slot or the yield hole be used as a matching design of the lead rib and the retaining groove or the retaining hole. The avoidance of the pedestal provides a space for the lead rib to make the mating length of the lead and the base before sliding relative to each other, and the lead pressing does not cause a click feeling; at the same time, the height of the push button switch is lowered. , making the overall thickness of the button switch thinner;

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention. Therefore, other structures obtained by the same or similar technical features as the above-described embodiments of the present invention are used. Within the scope of protection of the present invention.

Claims

An ultra-thin key switch includes a base and a cover attached to the base, the cover has an opening, and further comprises a guiding core, a torsion spring and a guide respectively arranged on the base a guiding member and a guiding core block, wherein a guiding post is protruded upward from a center of the upper end of the base, a guiding hole is defined in a center of the guiding column, and a guiding hole for inserting the conduction component is disposed at one end of the guiding base The other end of the guiding core is provided with a torsion spring slot; the guiding core is located at the side of the guiding core, and the lower end of the guiding core defines an annular slot, and the annular slot is convex downward The insertion post is inserted into the guiding hole of the base, and the guiding post of the base is inserted into the annular slot, and the guiding post and the outer side of the plug are sleeved with a spring; the lower end surface of the guiding core is opened Digging the groove to form a plurality of core lobes on the lower end surface of the lead core; on the pedestal and outside the guide post, a plurality of retaining grooves for guiding the lobes of the lead core are opened, or the ribs of the lead core are worn A number of yielding holes.
The ultra-thin key switch according to claim 1, wherein an annular receiving groove is defined in an upper end edge of the base, and a balance bar assembly is disposed in the annular receiving groove, and the balance bar assembly is mainly divided into The first balance bar of the body is formed to intersect with the second balance bar, and the first balance bar and the second balance bar are both disposed at the lower end of the guide core.
The ultra-thin key switch according to claim 2, wherein the first balance bar and the second balance bar are both U-shaped, and the open end of the first balance bar and the open end of the second balance bar Interlacing with each other; the first balance bar includes a first transverse bar, and a first longitudinal bar respectively connected to the two ends of the first transverse bar, the first longitudinal rod end is provided with an outwardly bent first a second hook; the second balance bar includes a second horizontal rod, and a second longitudinal rod respectively connected to the two ends of the second horizontal rod, the second longitudinal rod end is provided with an inwardly bent portion a second hook; the first transverse rod is located at a lower end of the guiding core, and the second transverse rod is located at a lower end of the other side of the guiding core.
The ultra-thin key switch according to claim 1, wherein an insertion hole is formed in an upper end of the lead post of the lead core, and an LED lamp is mounted in the mounting hole.
The ultra-thin key switch according to claim 1, wherein the conduction assembly comprises a static piece and a movable piece.