KR0149161B1 - Method of producing a keyboard switch and a keyboard switch - Google Patents

Abstract

In a process of producing a keyboard switch, a continuous track (10) of a metal foil is machined into two metallic terminal components (13, 14) constituting links between two carrier strips (11, 12). A base housing component (22) is cast from a high temperature resistant material around the terminals (13, 14) and is connected to the carrier strips (11, 12) through two tags (29) protruding outwards from opposite, outer side surfaces (27) of the base housing component (22). In an inner recess (23) of the base housing component (22) a domed metal disc (31) having an acoustically damping coating (32) on the convex side surface thereof, an elastically compressible rubber component (33) and a push button (37) are arranged. On top of the base housing component (22), a top housing component (30) preferably made from the same high temperature resistant plastics material is arranged. Within the recess (23) of the base housing component (22), the terminal (13, 14) define electric contacts (19, 20) with which the domed metal disc (31) co-operates. The terminals (13, 14) are separated from the carrier strips (11, 12) and bent into the configuration of pins of an electronic keyboard switch, and the keyboard switch is still connected through the tags (29) to the carrier strips (11, 12) transferred to a test stand (5), in which the keyboard switch is tested. Provided the keyboard switch is identified as a properly functioning keyboard switch, the tags (29) are separated from the base housing component (22).

Description

Manufacturing Method of Keyboard Switch and Keyboard Switch

1 is a schematic perspective view of a production line in which a keyboard switch is produced according to the method according to the invention,

2 is a partial cross-sectional view of the keyboard switch shown in FIG. 1,

3 is a schematic perspective view showing the production of the accessory element of the keyboard switch shown in FIGS. 1 and 2 according to the method of the present invention,

4 is a schematic, perspective, partial exploded view illustrating an assembly of an accessory element and a manually operable keyboard switch housing element comprising a keyboard switch and two light emitting diodes according to the invention and manufactured according to the method according to the invention. ,

FIG. 5 is a schematic, perspective and partial exploded view of the assembly shown in FIG. 4 upside down,

6 is a schematic perspective view showing an assembly of a light emitting diode support constituting an accessory upper housing element of a keyboard switch and a key according to the present invention.

A method according to the invention for producing a keyboard switch according to the invention, consisting of five respective manufacturing steps approximately shown in the positions indicated by reference numerals (1)-(5), is illustrated in FIG.

In position 1 a metal plate is provided to constitute a continuous track of the metal film 10.

In position (2), the metal thin film track 10 is processed by a punching tool, not shown in FIG. 1, so that two carrier strips 11 and 12 are formed with two terminal assemblies 13 and (14) follows.

As will be evident from the following description, each of the terminal assemblies 14 and 15 is molded into two terminals in the next manufacturing step.

Thus, the terminal assemblies 13 and 14 are integrally connected to the carrier strips 11 and 12 at the end of the terminal assembly, which end constitutes the outer terminal end of the terminal described above.

As clearly shown in FIG. 1, the terminal assembly 13 is shaped to form an indented bar 15 at its center, and the contact bar 17 is adjacent to the adjacent terminal assembly ( 14) stretched out.

A dome-shaped contact pad 19 is formed at the outer end of the contacted bar 17 away from the concave bar 15.

As clearly shown in FIG. 1, the terminal assembly 14 is also molded to form an indented bar 16 at the center, and the two connector bars 18 are adjacent terminals from the recess. It extends into the assembly 13.

The connector bar 18 is also provided with an outer contact 20 extending upwards. In position 3 the base housing element 22 is fitted around the aforementioned elements 15-20 of the terminal assembly 13 and 14 described above.

The base housing element 22 has a recess 23 formed in the center thereof to form the inner surface 24 and the bottom surface 25 of the circumference, in which the outer contact portion 20 extends upwardly with the contact pad 19. Protrudes upward and is exposed.

The base housing element 22 also consists of an upper side 26, a bottom side (not shown in FIG. 1), a first outer side 27 and a second outer side 28 facing towards the carrier strip 12. .

Faces 26, 27 and 28 are perpendicular to each other.

Base housing element 22 also has a bottom surface parallel to top surface 26 and two outer surfaces parallel to first and second outer surfaces 27 and 28, although not shown in FIG.

The carrier tech 29 protrudes from the first outer side 27 and from the outer side not shown in FIG. 1.

The carrier tech 29 is integrally molded to the base housing element 22 and fitted to the carrier strips 11 and 12 respectively.

As clearly shown in FIG. 1, it also engages the upper housing element 30 and accessory elements described below on the upper and lower surfaces 26 and outer surfaces 27 and 28 of the base housing 22. Indents are provided.

In the base housing element 22 described above, a dome-shaped metal disk 31 is distributed, and the metal disk has a dome-side surface upward, that is, outward from the recess 23 of the base housing element 922. It is supposed to be stretched.

The domed metal disk 31 is connected to the contact 20 instead of the central contact pad 19 in the form of a normal dome, and thus, between the contact pad 19 and the outer contact 20 in the form of a normal dome. No electrical conductive connection is made between the assemblies 13 and 14.

A central coating 32 of damping material, for example silicon, is provided on the top or convex side of the domed metal disk 31.

In this case, the damping material contributes to converting the unpleasant and rough noise generated in the non-damped domed metal disk into a pleasant and reduced amplitude noise when the metal disk is deformed from the dome shape.

The rubber element 33 consisting of the coating part 34 and the stem part 35 which are integrally connected to the upper part of the domed metal disk 31 is distributed.

As clearly shown in FIG. 1, the encapsulant 34 has an outer diameter larger than that of the domed metal disk 31 and also has a circumferential bead 36 at the lower side of the encapsulated portion shown in FIG. ) Is installed.

The beads 36 contribute to seaming along the edge of the circumference of the domed metal disk 31.

Since the metal disk is deformed by elastically deforming the stem portion 35 or reduced in the form of a normal dome, the stem portion 35 is hollow, elastically deformable, and a conventional force is applied to the stem portion 35. It serves to transfer from the applied button 37 to the domed metal disk and to increase the travel stroke of the button 37 in relation to the stroke of the travel of the domed metal disk.

As clearly shown in FIG. 2, the coating portion 34 is provided with a projection portion 38 on the side of the coating portion, and has a dome shape when the stem portion 35 is operated by the button 37 and pressed downward. It serves to contact the center of the metal disk 31.

Since the domed metal disk 31 and the rubber element 33 are disposed in the recesses of the base housing element 22, the upper housing element 30 is disposed and fixed on top of the base housing element 22 and the upper housing element. The button 37 is disposed in the gap at the center of the 30.

As is clearly shown in FIG. 1, the upper housing element 30 is provided with a cylindrical bottom and is fitted by snap fitting into the recess 23 as clearly shown in FIG. In addition, the upper housing element is provided with a fin (protruding downward) to be able to engage with the above-described recess of the upper surface 26 of the base housing element 22.

The travel of the button 37 in the gap 39 of the upper housing element 30 is a pin projecting outward from the circumferential outer surface of the lower edge of the button 37 as clearly shown in FIG. controlled by a fin 40, the fin 40 is engaged with the recess in the inner surface of the gap 39 of the upper housing element 30.

Keyboard switch assembly corresponding to the above-described position (4) of FIG. 1, the base housing element 22, the upper housing element 30, the button 37, the domed metal disk 31 and the rubber contained in the housing of the keyboard switch assembly The element 33 is assembled.

Terminal assemblies 13 and 14 protrude from a parallel side opposite the first outer side 27.

When the keyboard switch assembly leaves position 4, the terminal assemblies 13 and 14 are separated at the outer ends of the carrier strips 11 and 12.

The keyboard switch assembly is thus connected to the carrier strips 11 and 12 via the tec 29 only.

When the keyboard switch assembly leaves position 4, the outer terminals extending from the base housing element 22 and consisting of fragments of the terminal assemblies 14 and 13 are also in position 5 of FIG. As you can clearly see from the keyboard switch shown, it is bent downwards.

By separating the terminal assemblies 13 and 14 from the carrier strips 11 and 12, the connection between the terminal assemblies 13 and 14 via the carrier strips 11 and 12 is removed.

When the keyboard switch assembly is mechanically supported by the carrier strips 11 and 12 through the tex 29 connecting the base housing element 22 and the carrier strips 11 and 12, the keyboard switch assembly is In position 5 it is tested in an automatic electrical test stand.

The test stand is roughly shown by the test block 41 and the test block is moved upwards from the position shown in FIG. 1 so that the outer ends of the terminals consisting of the terminal assemblies 13 and 14 are located at the block ( 41 is fitted into the gap 42.

A first connecting device made of metal in the gap 42 to establish a connection electrically conductive with the terminals 13 and 14 and capable of determining whether a short circuit condition is established in the contact device; A test circuit, not shown, is connected to the figure.

In addition, the button 37 is operated to deform the domed metal disk 31 from the normal dome shape by the interaction of the rubber element 33, and the short circuit condition between the terminals 13 and 14 is performed. Keyboard switches are easily tested by monitoring whether they exist.

The purpose of the test is to determine if the keyboard switch assembly is a functioning keyboard switch.

That is, a connection having no electrical conductivity is made between the terminal 13 and the terminal 14 when the keyboard switch is not operated, and electrically connected between the terminals 13 and 14 when the keyboard switch is operated. The connection with the connection is made.

If the keyboard switch assembly is found to function properly, the keyboard switch assembly is separated from the carrier strips 11 and 12 by disconnecting or separating the keyboard switch assembly from the tex 29.

In FIG. 1, holes 43 and 44 are provided in the carrier strips 11 and 12.

The above-described process of manufacturing a keyboard switch assembly according to the invention is shown above, which also includes a computer controlled mechanical propulsion device in which the track 10 is known from position 1 to position 5. By moving it.

Thus, the holes 43 and 44 are associated with a process apparatus for advancing the track 10 and alternatively with a predetermined position which is one of the positions 1-5 shown in FIG. 1 in the process control computer. To be coupled to the optical or approach detection device to indicate the position of the track or carrier strips 11 and 12.

FIG. 2 shows a cross section of the keyboard switch assembly described above, showing the aforementioned elements, moreover a domed metal disk 31 surrounded by a bend 36 of the encapsulant 34 of the rubber element 33. The sutures are shown in detail.

In the production line for producing the keyboard switch described above with reference to FIG. 1, the metal plate 10 on which the keyboard switch is molded is advanced through a plurality of process stations.

Alternatively, the metal plate 10 is in a stationary state, and the production station may be moved along the metal plate.

Moreover, the production line can be configured with a suitable combination of the above possibilities, namely, advancing the metal plate 10 in relation to the station and moving the station in relation to the metal plate.

However, one very important aspect of the present invention is to permanently secure the keyboard switch with respect to the metal plate 10 or carrier strips 11 and 12 until the keyboard switch is tested and found to be a functioning key.

The keyboard switch is thus permanently fixed to the carrier strips 11 and 12 and thus relates to the devices of the respective stations 2-5 in the fixed position, in particular the position of FIG. The keyboard switch is not moved from the production line to the test position because it relates to the block 41 constituting part of the test stand shown in 5).

As described above, the keyboard switch assembly illustrated in connection with FIGS. 1 and 2 will be coupled with accessory elements such as the display assembly 50 shown in FIG.

In FIG. 4, the display assembly 50 is connected via a dovedale-type locking device protruding outwardly to the assembly according to the present invention, which is the reference numeral 48, and the locking device shown in FIG. In combination with the above-mentioned recess of 28).

The display assembly 50 is connected to the keyboard switch assembly 48 and mechanically fixed by the dovedale-type female and male locking devices.

The keyboard switch assembly 48 is provided with the fact that the button 37 is replaced by the button 47 and the upper housing element 30 is replaced by the upper housing element 60 so that it is located on the upper surface of the same level as the button 47. Different from the keyboard switches described with reference to FIGS. 1 and 2.

The display assembly 50 is composed of two light emitting diodes 51 and 52, the light emitting diode being fitted into a housing of the display assembly 50 and connected to a terminal, the terminal being referred to by reference numeral 113 and The terminal 13 and keyboard 13 of the keyboard switch assembly 48, denoted by 114, and which has a configuration that enables the mounting of the keyboard switch assembly 48 and the display assembly 50 during the surface mount process. 14), moreover the terminal is known as terminal type J SMD in the known art.

Accessory assembly 50 is composed of replaceable elements. Thus, the two light emitting diodes 51 and 52 may be embodiments of the elements of the display assembly 50, and in other specific embodiments, may be replaced by, for example, a single light emitting diode, one or more incandescent lamps.

The accessory assembly 50 also consists of one or more active or passive elements such as integrated circuits, transistors, resistors, capacitors or relays. Unlike the accessory element or the display assembly 50, the keyboard switch assembly 48 is coupled with the pushbutton assembly 54 in FIG. 4, which pushbutton assembly is divided into two parts, that is, the assemblies 48 and 50. It consists of a fixed housing part 55 which is installed and fixed in relation to it and a movable or pivotal part 56.

The upper housing element 60 also has a shaft portion of the pivot acting portion 56 of the pushbutton assembly 54 on the upper housing element 60 from the upper housing element 30 described above in FIGS. 1 and 2. In order to couple with the axial part, different elements 61 in which the outer groove 62 is formed are installed.

5, the assemblies 48, 50 and 54 are shown in an inverted state. Thus, in Fig. 5, the above-mentioned shaft portion, which is combined with the groove 62, is indicated by the reference numeral 63.

Thus, in Fig. 5, the aforementioned shaft portion, which is coupled with the groove 62, is shown by reference numeral 63.

In FIG. 5 two projections 64 of the fixed housing portion 55 of the pushbutton assembly 54 are shown, the projections having an outer surface 27 or base housing element (described above with reference to FIG. 1). It is to be combined with the recess of the opposite outer surface of 22).

The fixed housing portion 55 is also provided with a snap-locking device 65 to tighten around the keyboard switch assembly 48 to secure the housing portion 55.

As clearly shown in FIG. 5, the housing portion 55 also has two protruding journal devices 67 that engage with the journal device 68 of the axis action 56 of the pushbutton assembly 54. Pressure is applied to the pushbutton 47 or to the inner contact element of the keyboard switch consisting of a domed metal disk 31 shown in FIGS. 1 and 2. A stem device 66 that delivers is installed.

However, the keyboard switch assembly 48 and the display assembly 50 shown in FIG. 5 are connected to the terminals 13, 14, and 113 from the keyboard switch assembly 48 and the display assembly 50 shown in FIG. 4. There is a difference that 114 is a different configuration, that is, an SMD terminal configuration known as a gull wing in the art.

3 shows the positions 6, 7 and 8 of the sequence process according to the invention for manufacturing the device or display assembly 50 described above with respect to FIGS. 4 and 5.

From a metal track similar to the metal track 10 described above in FIG. 1, two carrier strips 11 and 112 are punched and sent to the first position, indicated at 6 in FIG.

As clearly shown in FIG. 3, the two terminal assemblies 113 and 114 are also punched from the metal tracks above.

However, the terminal assemblies 113 and 114 are different from the terminal assemblies 13 and 14 shown in FIG. 1, and the terminal assemblies 113 and 114 connect the link between the carrier strips 111 and 112. The difference is that it is not configured.

Thus, only the terminal assembly 113 is connected to the carrier strip 111 while the terminal assembly 114 is independently connected to the carrier strip 112.

In position 7, terminal assembly 113 and 114 are also processed and separated into two respective terminal assemblies.

Thus, the terminal assembly 113 is separated into two terminal assemblies 113a and 113b and the terminal assembly 114 is separated into two terminal assemblies 114a and 114b.

The recesses of the terminal assemblies 113a, 113b and 114a, 114b, which are separated from the carrier strips 111 and 112, are bent in the form shown in FIG.

In the position 8, the housing portion 122 is fitted to the terminals 113a, 113b and 114a, 114b.

After the forming step shown in position 8 is finished, the elements constituting the housing of the display assembly 50 shown in FIGS. 4 and 5 are separated from the carrier strips 111 and 112.

As clearly shown in FIG. 3, the carrier strips 111 and 112 have holes corresponding to the holes 43 and 44 of the carrier strips 11 and 12 shown in FIG. 143) are installed.

It is to be appreciated that the keyboard switch assembly or keyboard switch assembly according to the present invention described above has a modular configuration since the keyboard switch assembly is combined with the aforementioned display assembly and accessory elements such as pushbuttons. As can be readily seen, the accessory element is translucent or a translucent portion is provided in the accessory element.

Thus, in particular, the axis acting portion 56 of the pushbutton 54 can be made of translucent material, which is emitted by the light emitting diodes 51 and 52 of the display assembly 50.

Furthermore, as clearly shown in FIG. 4, the pushbuttons or upper housing elements of the keyboard switch assembly 48 may be modified for special purposes.

6 shows a keyboard switch assembly for the present invention, wherein the keyboard switch assembly is a pushbutton extender 70 with respect to the above-described keyboard switch assembly shown in FIGS. 4 and 5. The point where the upper part of the pushbutton 47 shown in FIG. 4 is arrange | positioned is deformed, and the said pushbutton tensioner 70 is a cylindrical structure.

An inner space 71 is formed in the pushbutton tensioner 70 and a light emitting diode 72 is disposed therein, and the diode is installed in the socket 73 fitted in the inner space 71.

The light emitting diode 72 has a pin extending through the gap between the slits 75 and 76 of the pushbutton tensioner 70 or the upper housing element 60 of the keyboard switch assembly.

In FIG. 6 one of the gaps of the upper housing element of the keyboard switch assembly is indicated with reference numeral 74.

One of the pins of the light emitting diode 72 is also shown in FIG. 6 and denoted by reference numeral 77.

In FIG. 6, the terminals 13 and 14 of the keyboard switch assembly and also the pins of the light emitting diode 72 are of a different configuration than the terminal configurations shown in FIGS.

Thus, it should be appreciated that the pins or terminals of the accessory elements, such as terminals 13 and 14 and pins 77 or terminals 113 and 114, may be of suitable construction.

TECHNICAL FIELD The present invention relates to the technical field of manufacturing electrical or electronic devices, and more particularly to the manufacture of keyboard switches and thus keyboard switches.

Various keyboard switches as well as various methods of manufacturing electrical or electronic devices are known in the art.

See the following patent specifications: EP 0030473, DE 2740746, DE 3542953, DE3545798, EP 0164799, SE 440836, US 4331851, US 4690484 (consistent with DE 3542953), US 4659881, US 4352964 and US 4102039.

It is an object of the present invention to provide a method for manufacturing a keyboard switch in a simple and few manufacturing steps with a small number of devices.

Another object of the present invention is to be able to use according to the so-called surface mounting techinque (SMT), i.e. withstand exposure to soldering metal materials such as tin heated to 240 ° C for about 60 seconds, for example. It is to provide a new keyboard switch manufacturing technology.

It is yet another object of the present invention to provide a novel keyboard switch manufacturing technique which is produced in a sequential process and tested before exiting the production line.

It is still another object of the present invention to provide a keyboard switch having a compact module structure that enables the keyboard switch to be connected to accessory elements such as a module display unit, a keyboard pad, and the like, and a method of manufacturing the keyboard switch. .

The above and other objects and advantages achieved by the technology of the present invention will become apparent from the following description.

Therefore, according to the first aspect of the present invention, a method of manufacturing a keyboard switch and the keyboard switch are:

It consists of an insulating housing with outer sidewalls, a switching element enclosed within said housing, and two or more metal terminal elements:

The two or more metal terminal elements each extend outwardly from an outer wall of the housing and are surrounded by an outer terminal forming the shape of the outer terminal end, which forms the shape of the outer terminal end, and the housing and are integral with opposite ends of the outer terminal end. It consists of an electrical contact device that is connected as an enemy:

The switching element is a first state in which the switching element is non-electrically connected to one or more of the electrical contact devices included in the at least two or more metal terminal elements and the switching element is electrically connected to the two or more metal elements. Switching between the second state, which is electrically conductive between the contacts, is possible:

The method for manufacturing a keyboard switch consists of the following sequence of steps.

(a) installing a continuous track of metal constituting the metal terminal elements;

(b) processing said continuous track to form said metal terminal elements and carrier strip, wherein said metal terminal elements are integrally connected to said carrier strip at said outer terminal ends with said outer terminal elements;

(c) inserting a base housing element made of insulating material around the metal terminal elements so that the base housing element forms a part of the outer wall which forms part of the outer wall of the housing, wherein the outer terminals are the outer wall of the base housing element; Extending in the base housing element, the base housing element comprises one or more tags protruding out from the outer wall of the base housing element and fitted into the carrier strip such that a mechanical connection is made between the base housing element and the carrier strip. The base housing element also has a recess such that the electrical contact device is exposed outward in the recess.

(d) said switching element is arranged in said reset of said base housing element to enable switching between said first and second states;

(e) step of installing the upper housing element with an aperture;

(f) Steps to install the stem device

(g) arranging the stem device within the gap of the upper housing element and arranging the upper housing element with respect to the base housing element together to form a housing, wherein the stem device is a magnetic pole between the first and second states. Arranged to be associated with the switching element by means of which the switching element can be switched

(h) separating the metal terminal elements from the carrier strip by separating the outer terminals from the carrier strip at an end of the outer terminal.

(i) if said switching element is switchable between said first and ninth states while said base housing element is mechanically connected to said carrier strip through said tec, said stem device may be run to perform a test; By activating and when the switching element is in the first state, determining whether the two or more metal terminal elements are electrically insulated from each other or not, and when the switch element is in the second state, Testing the keyboard switch manufactured in steps (a)-(h) at a test stand by determining whether two or more metal terminal elements of the electrical connection make an electrically conductive connection therewith; and

(j) if the keyboard switch is found to be a normally operating element in step (i), separating the tex from the base housing element.

According to the method according to the invention the keyboard switch is made of only five elements: continuous track, base housing element, switching element, stem device and upper housing element.

Since the base housing element is mechanically connected to the carrier strip via the tec, the keyboard switch is passed through a number of production departments corresponding to the above steps by moving the carrier strip during the manufacturing process.

According to a feature of the method according to the invention the keyboard switch manufactured in the above steps (a) to (h) is easily located in the test stand which is integrally connected to the carrier strip via the tec. It is easily tested in step (i).

According to a preferred specific embodiment of the method according to the invention two carrier strips are machined from said continuous track in step (b) above, have a foreign terminal end and carry said carrier strip through said outer terminal end. The metal elements, which are integrally connected to the carrier strips, are integrally connected to the carrier strips, and the metal elements are arranged between the carrier strips, and are inserted into the respective carrier strips in two of the above steps (c). You lose.

By installing two carrier strips and two tacks fitted to each carrier strip, the keyboard switch is fixed to the two carrier strips and mechanically held firmly as the carboard switch proceeds through the above steps.

According to a variant of this preferred embodiment of the method according to the invention, each rapid terminal element forms a link between the two carrier strips so that the mechanical action of the keyboard switch as it proceeds through said steps Fastening and support are further increased, each of the metal elements having two outer terminals, which are integrally connected to the respective carrier strips at the ends of the terminals.

According to a preferred specific embodiment of the method according to the invention the switching element is a domed metal disc, in step d the disc is arranged such that the dome protrudes out of the recess, the disc being first A stem device deformable into a deflected shape constituting the state, provided in step (f) and disposed in the gap of the housing element in step (g), acts on the metal disk and the dome The shape is transformed into the above deflected shape.

In step (g), it is preferable that an elastically compressible main body device is disposed between the stem device in step (f) and the metal disk in accordance with the method according to the invention and is burned as described below. The sexually compressible body device has other purposes, for example to increase the travel or stroke of the metal disk when the metal disk is deformed, when the keyboard switch is welded to the support circuit board. That is, in a corrugated welder, it is sealed along the circumferential edge of the disk, thus contributing to the limited protection of the metal disk by protecting the metal disk and the electrical seating device from high temperatures in the surface mounting process.

It is known that smooth and rough clicks occur when the domed metal disk is deformed.

In addition, according to the characteristics of the present invention, the click is damped to apply a coating or layer to one side of the domed metal disk to produce a clearer sound, and the side of the disk is the outer or convex side of the domed metal disk. Configure

Therefore, according to another specific embodiment of the method according to the present invention, it is preferable that the metal disk is punched out of the metal thin film, and coated with a damping material on one side thereof, and the side of the domed metal disk has It constitutes an outer or convex side.

Furthermore, keyboard switches manufactured according to the method according to the invention are made of a plastic material that the base and upper housing elements of the keyboard switch can withstand at high temperatures, for example in surface mount processes, for example in corrugated welders, eg For example, it is a keyboard switch that can withstand temperatures as high as 240 ° C for 60 seconds.

According to a second aspect of the invention,

Housing made of insulating material with an outer wall.

A keyboard switch is provided that is comprised of a domed metal disk enclosed within the housing, and at least two metal terminal elements, wherein each metal terminal element extends outward from the outer wall of the housing and is shaped like an outer terminal end. An outer terminal constituting the outer terminal and the electric contact device three-dimensionally connected to the upper outer terminal at the opposite end of the outer terminal end;

The domed metal disk is a type in which the domed metal disk is deflected from a first state in which the disk is in a normal dome shape and is not in contact with at least one of the above electrical contact devices of two or more metal terminal elements. And by deforming the disk from a normal dome to a deflected shape, the two or more metal elements are switchable between a second state where an electrically conductive contact is made between the electrical contact devices:

The housing above is:

A base housing element made of said insulating material fitted around said metal terminal elements and an upper housing element having a gap and a stem device, said base housing element being an outer wall constituting part of said outer wall of said housing; Wherein the outer terminal extends through an outer wall of the base housing element, the base housing element has a recess, through which the electrical contact device is exposed outward, The dome shaped metal disk is disposed in the recess of the base housing element such that the metal disk dome protrudes outward from the recess so as to be switchable between the first and second states,

The stem device is disposed in relation to the domed metal disk to be disposed within the gap of the upper housing element and to switch the domed metal disk of the wing between the first and second states by a magnetic pole, And

The metal disk is molded from a thin metal film, and a damping material is coated on one side of the dome-shaped metal disk, which constitutes an outer or convex side.

As mentioned above, the keyboard switch according to the present invention preferably also includes an elastically compressible main body device disposed between the stem device and the metal disk, wherein the main body device replaces the stroke of the metal disk with the larger stroke of the stem device. To increase its role.

In a preferred specific implementation of the keyboard switch according to the invention, the keyboard switch should be a keyboard switch capable of withstanding high temperatures, for example 60 ° C. for 60 seconds since the keyboard switch is for example welded during the surface mount process.

The base and upper housing elements are polycrystalline copolymers such as high crystalline copolymers, epoxy resins, olefin-carbon-monooxide copolymers, polycarbonates and polyethylene-sulphate (PES) or polyethylene-terephthalate such as PETP or PET, for example. Made of heat-resistant plastic material such as sulfonate.

In order to seal the domed metal disks so that the domed metal disks are not exposed to gases such as corrosive gases or for example high temperatures during the surface mount process described above, the keyboard switches according to the invention are also coaxially associated with one another. The main body device is composed of a stem device, a main body device, and a dome-shaped metal disk, and the elastically compressible main body device is composed of a circular coating part having a circumferential bead and a central stem part. Wherein the stem portion of the stem portion constitutes an elastically compressible recess that transmits the stimulus applied to the stem device to the domed metal disk, wherein the domed metal disk has an edge around the circumference of the domed metal disk. Arranged in the bead of the circumference of the encapsulation to be sealed along and intercept the domed metal disk from the surroundings This is preferred.

In the above-mentioned preferred concrete seal of the keyboard switch according to the present invention, the elastically compressible main body device is made in particular from silicone rubber, and the domed metal disk is in particular a cube thin film having a thickness of, for example, 0.075 mm. Is made.

The invention is now illustrated with reference to the drawings.

In a pilot implementation of the method of manufacturing the keyboard switch assembly shown in FIGS. 1 and 2, the carrier strips 11 and 12 and the terminal assemblies 13 and 14 have a thickness of 0.3 mm. It is molded from plated tin bronze.

The carrier strips 11 and 12 have a width of 3 mm and the distance between the centerlines of the carrier strips 11 and 12 is 23.96 mm.

The distance between the terminal assemblies 13 and 14 is 7.6.mm and the diameter of the holes 44 is 1.2 mm, which is on the centerline of the carrier strips 11 and 12 and the terminal assembly 13. And a middle point of 14 and the diameter of the hole 43 is 1.8 mm.

The width of the recess 16 is 4.4 mm, and the contact 20 extending upward projects 0.5 mm upward from the recess 16.

The drawn contacts 20 and contact pads 19 are located at the center or at the midline of the terminal assemblies 13 and 14.

The contact pad 19 protrudes 0.45 mm upward from the concave portion 15, and consists of a dome having a radius of 1.35 mm to form a circular contact pad having a diameter of 1.224 mm.

The base housing element 22, the upper housing element 30 and the button 37 are made of polycarbonate (or are made of PES or PETP). The shrinkage of the device is about 0.5 percent or less.

Pushbutton 37 is 6.5 mm in diameter and 2.8 mm in height.

The pin 40 has a height of 0.8 mm and a maximum diameter of 7.65 mm due to the pins located opposite each other.

The button 37 also has a centrally inwardly projecting protrusion, shown in FIG. 2, which is at a height of 0.95 mm from the bottom side of the bottom.

The assembly consisting of the base housing element 22 and the upper housing element 30 has a height of 5 mm and is the maximum of the keyboard switch assembly from the bottom side of the base housing element 22 to the top surface of the keyboard switch 37. The height is 6.4mm.

The outer dimensions of the bottom and upper housing parts are 10mm × 10mm.

The rubber element 33 is made of silicone rubber having a Shore hardness of 38 ± 2. The inner diameter of the coating part 34 is 8.83 mm, the inner diameter defined in the bead 36 is 6.8 mm, the thickness of the coating part 34 is 0.3 mm, and the total thickness of the bead is 0.63 mm.

The central projection 38 has a circular cross section of 1.4 mm at a distance of 0.4 mm from the lower side of the coating portion 34.

The stem portion 35 is a hollow cylindrical recess portion having a height of 3.16 mm, the diameter of the upper portion of the stem portion is 2.8 mm, the taper angle of the cylindrical outer surface of the stem portion 35 is 7 °, and the depth of the inner recess. Is 2.5 mm, the inner diameter is 1 mm, and the taper angle of 5 ° is achieved by the inner cylindrical surface.

The domed metal disk 31 is made of 0.075 mm copper beryllum alloy.

The diameter of the metal disk 31 is 6.4 mm, and the maximum diameter of the damping coating 32 is 5 mm.

The arch or dome radius of the disc is 39.1 mm and the height of the dome is 0.25 mm.

The domed metal disk is deformed from the normal dome shape by applying a pressure of 155-165 g, and is reduced from the deformed shape to the normal dome shape when the pressure applied to the domed metal disk is 115-125 g or less.

Both the rubber element 33 and the domed metal disk 31 provide an increase in the stroke of the domed metal disk of about 0.25 mm-0.3 mm to the total stroke or travel of the pushbutton 937 of about 0.8 mm-1 mm.

Example 2

The accessory element or display assembly 50 shown in FIG. 4 is made of a terminal plate made of a tin bronze plate which is piloted with silver and a housing molded of polycarbonate, similar to the keyboard switch described above in Example 1. FIG.

Although the present invention has been described above with reference to specific embodiments, the present invention is not limited to the above specific embodiments, and thus various modifications and modifications within the scope of the present invention are defined by the appended claims. It will be clear to those who have a general description of the technical field to which the invention belongs.

Claims (12)

A housing made of an insulating material having outer sidewalls, a switching element enclosed within the housing, and two or more metal terminal elements: the two or more metal terminal elements each extending outward from an outer wall of the housing and having an outer terminal. An outer contact forming an end of the outer terminal and an electrical contact enclosed in the housing and integrally connected to an opposite end of the outer terminal end, the switching element comprising the switching element having at least two metal terminal elements; Between the first state that is not electrically conductively connected to at least one of the electrical contacts included in the switch and the second state where the switching element is electrically conductive between the electrical contacts of the two or more metal elements. CLAIMS 1. A method of making a switchable keyboard switch, comprising: (a) installing a continuous track of metal constituting the metal terminal elements; (b) shaping the continuous track to form the metal terminal elements and the carrier strip, wherein the metal terminal elements are integrally connected to the carrier strip at the outer terminal ends; (c) embedding a base housing element of insulating material around the metal terminal elements so that the base housing element forms the outer wall that forms part of the outer wall of the housing, wherein the outer terminals are the outer wall of the base housing element. Extending from the field, the base housing element includes one or more tacks protruding outward from an outer wall of the base housing element, the base housing element being fitted to the base housing element and the carrier strip, wherein the base housing element is also provided with a lid. And having a recess such that the electrical contact device is exposed out of the recess: (d) the return of the base housing element such that the switching element is capable of switching between the first and second states. Steps disposed in the set: (e) with a gap (F) installing the stem device: (g) arranging the stem device in the gap of the upper housing element and in relation to the upper housing element to secure the housing together. And the system arrangement is arranged with respect to the switching element to enable switching of the switching element by a magnetic pole between the first and second states: (h) the outer terminals at the end of the outer terminal of the carrier strip Separating said metal terminal elements from said carrier strip by separating from: (i) said switching element being said first while said base housing element is systematically connected to said carrier strip through said tec; Switchable between and second state By operating the stem device to perform a test and when the switching element is in the first state it is determined whether the two or more metal terminal elements are electrically insulated from each other or not. When the switching element is in the second state, the keyboard switch manufactured in steps (a)-(h) is tested in a test stand by determining whether two or more metal terminal elements are in an electrically conductive connection with each other. Step and (j) if the fraudulent keyboard switch is found to be a normally functioning device in step (i), separating from the base housing element. 2. The carrier strip of claim 1, wherein in step (b) two carrier strips are formed from the continuous track, wherein the metal elements are disposed between the carrier strips and integrally with the carrier strip through the outer terminal end. Connected, and in step (c) two tacks are fitted to each carrier strip. 3. The device of claim 2, wherein each of the metal terminal elements forms a link between the two carrier strips, wherein each of the metal elements has two outer terminals to each carrier strip at the end of the outer terminal. Keyboard switch manufacturing method characterized in that connected integrally. 4. The switching element according to any one of claims 1 to 3, wherein the switching element is a domed metal disk, and the disk is arranged in step (d) such that the dome of the disk protrudes outward from the recess. The disc is in the form of a normal dome in the first state and can be deformed into a deflected form constituting the second state in the dome form, where it is installed in step (f) and the top of the in step (g). And said stem device disposed within a gap of a housing element acts on a metal disk to deform said disk from said dome shape to said deflected shape. 5. The method of claim 4, wherein in step (g), an elastically compressible body device is disposed between the stem device and the metal disk. 6. The metal disk of claim 5, wherein the metal disk is punched from a thin metal film, and a coating of damping material is coated on one side of the metal disk, and the sidewall of the domed metal disk is formed on the outer side of the domed metal disk or Keyboard switch manufacturing method characterized in that consisting of convex sidewalls. 5. A method according to claim 4, wherein in said steps (c) and (e) said base and upper housing elements are cast from a high temperature, heat resistant plastic material. A housing made of an insulating material having an outer wall, a domed metal disk enclosed within the housing, and two or more metal terminal elements, each metal terminal element extending outward from an outer wall of the housing, A dome shaped outer terminal and an electrical contact device housed in the housing and integrally connected to an upper outer terminal at an opposite end of the outer terminal end: the domed metal disk is a dome shaped disk. The domed metal disk and the first state which are not in electrical contact with at least one of the above electrical contact devices of two or more metal terminal elements are deflected and the disk is in a normal dome shape. In a biased form The bottle shape enables switching between a second state where an electrically conductive contact between the electrical contacts of the two or more metal elements is made: wherein the housing is fitted around the terminal elements of the metal. A base housing element made of the above insulating material, and an upper housing element having a gap and a stem device, wherein the base housing element forms a form of an outer wall constituting a part of the outer wall of the housing, and the base housing element. The outer terminal extends through the outer wall of the base housing element, and the base housing element has a recess through which the electrical contact device is exposed and the domed metal disc is In said recess of said base housing element The dome of the metal disk protrudes outwardly from the recess so as to be switchable between the first and second states, the stem device is disposed in the gap of the upper housing element and by the stimulus the The keyboard is disposed between the first and second states, and the metal disk is molded from a thin metal film, and the damping material is coated on one side of the dome-shaped metal disk to form an outer or convex side. switch. The keyboard switch according to claim 8, wherein an elastically compressible main body device is disposed between said stem device and said metal disk. 10. The base and top housing elements of claim 8 or 9, wherein the base and upper housing elements are made of crystalline copolymers, epoxy resins, olefin-carbon-monooxide copolymers, polycarbonates and polyethylene sulfonates (PES) or PETP or PET and the like. A keyboard switch comprising a heat resistant plastic material such as polyolefin sulfonate such as polyethylene terephthalate. 11. A body according to claim 10, having a stem device, a main body device and a domed metal disk arranged coaxially in relation to each other, wherein the elastically compressible main body device has a circular coating portion having a circumferential bead and a central portion. The stem portion of the main body apparatus constitutes an elastically compressible recess for transmitting a stimulus applied to the stem apparatus to the domed metal disk, wherein the dome-shaped metal disk diameter is the main body. The dome-shaped metal disk is smaller than the diameter of the circular encapsulant of the device, and the domed metal disk is disposed in the circumferential bead of the encapsulated portion such that the bead along the circumferential edge of the domed metal disk is formed. Keyboard switch characterized in that it is sealed. 12. The keyboard switch according to claim 11, wherein said elastically compressible main body device is molded from silicone rubber, and said domed metal disk is formed from CuBe alloy thin film having a thickness of, for example, 0.075 mm. .

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