WO2010139224A1 - 键升降开关装置及其组装夹具和组装工艺 - Google Patents

键升降开关装置及其组装夹具和组装工艺 Download PDF

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Publication number
WO2010139224A1
WO2010139224A1 PCT/CN2010/072465 CN2010072465W WO2010139224A1 WO 2010139224 A1 WO2010139224 A1 WO 2010139224A1 CN 2010072465 W CN2010072465 W CN 2010072465W WO 2010139224 A1 WO2010139224 A1 WO 2010139224A1
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WO
WIPO (PCT)
Prior art keywords
positioning
key
frames
support plate
switch device
Prior art date
Application number
PCT/CN2010/072465
Other languages
English (en)
French (fr)
Inventor
黎柏松
Original Assignee
Li Baisong
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Li Baisong filed Critical Li Baisong
Publication of WO2010139224A1 publication Critical patent/WO2010139224A1/zh

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/02Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/12Push-buttons
    • H01H3/122Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00Apparatus or processes specially adapted for the manufacture of electric switches

Definitions

  • the present invention relates to a key lift switch device for a keyboard, and more particularly to a key lift switch device for an ultra-thin key in a keyboard of an input device of an electronic device, and to an automatic assembly method of a button corresponding to the one-key lift switch device.
  • the guide plate is hollowed out with a guide slot and a shaft pivot;
  • the first frame and the second frame are scissor-type support structures, and are pivotally assembled to the keycap shaft and the positioning plate shaft
  • the elastic body is placed at the bottom pressing portion of the keycap, and the thin film circuit board is located between the elastic body and the bottom plate.
  • the key cap is lifted and lowered, and during the lifting process, the first frame and the second frame of the scissor-type support structure are guided on the key cap and the positioning plate.
  • the sliding of the chute realizes a smooth and uniform lowering of the keycap relative to the positioning plate, and at the same time, it rises smoothly and evenly by the resilience force of the elastic body, and the structure which plays an important role lies in the scissor structure.
  • first frame and the second frame must be separated from each other during injection molding, and are injection molded.
  • the post-formation is reassembled in pairs in the form of a hand or a fixture, which also increases assembly costs.
  • the link member disclosed in the patent CN1716483A is not easily injection-molded in the form of meshing in use, but must be present in the injection mold in a manner separated by a distance, and must be manually repositioned on the positioning plate after injection molding and It is difficult to control the assembly accuracy and labor cost between the key caps or the jig assembly method to reassemble the injection-molded link members.
  • the link member or the scissor frame having the meshing function described in the above two publications needs to be reassembled by hand or jig after injection molding, and due to the miniaturization and ultrathinness of the keyboard, Therefore, the above-mentioned link member or frame is increasingly miniaturized, so the accuracy of the jig is difficult to achieve.
  • a large number of related patents represented by the above two patent announcements are now present in patent databases in various regions of the world, which proves that the inertia of researchers in this field is based on "link parts" and has not been able to go out of this for many years.
  • the present invention has the following objects:
  • the primary purpose is to provide a key lift switch device to avoid the use of the "link member" pivoting or meshing structure, which can simplify the internal structure and reduce the cost of the injection mold, and can be easily carried out without re-arrangement after injection molding. Assembling, it is also possible to achieve balanced and stable keycap lifting to implement the operation of the switch;
  • Another object is to provide a keyboard for realizing the application of the key lifting switch device of the present invention; and another object is to provide an assembly jig for realizing the assembly process of the key lifting switch device of the present invention, so that each corresponding component is formed in the mold It can be arranged in a tightly arranged manner in a keyboard layout, and assembled with high precision, thereby saving the assembly steps of blanking and rearrangement of various components, improving production efficiency and yield of finished products, and providing substantial technical basis and technical support for the realization of highly automated production.
  • Another object is to provide an assembly process for assembling the assembly jig of the present invention to optimize the process flow and improve production efficiency.
  • a key lifting switch device comprising a key cap located above a support plate, a telescopic assembly for maintaining a balance of the key cap relative to the support plate when the key cap is pressed or pulled up or lowered by a resilience force, corresponding to the key a switching mechanism for raising and lowering the cap and opening the key signal, the telescopic assembly comprising:
  • the preset two pivoting kits are pivoted;
  • At least one synchronous slider for pressing the synchronous lifting of the pair of frames is disposed through the cavity of the pair of frames, one side of which is pivoted on the bottom surface of the support plate/keycap, and the other side is defined to follow the bottom surface of the keycap / Support 7 board specific area telescopic activities.
  • the two frames Preferably, in the telescopic assembly, the two frames have a symmetrical structure.
  • any one of the pair of frames is U-shaped, and has a beam and two arm members folded from the beam, and each of the two ends of the beam protrudes from a pivot to be associated with the support plate.
  • the sliding kit is mounted; the ends of the two arm members project outwardly from a pivot to pivot with a pivoting sleeve on the bottom surface of the keycap.
  • Any one of the two sliding sets on the support plate includes two groove forming members symmetrically spaced apart by a distance corresponding to the length of the beam, each groove forming member including a hook disposed on the surface of the supporting plate and a distance A limit block set by a certain length of the hook, the active area between the hook enterprise and the limit block defines a sliding range of the frame beam on which the frame beam is mounted.
  • Any one of the two pivoting sleeves on the bottom surface of the keycap includes two pivoting holes symmetrically spaced apart from the ends of the two arm members, and the corresponding frame has two pivots on the sides of the two arm members and the The two pivot holes are correspondingly arranged so that the frame can be pivoted.
  • the synchronous slider is in the shape of a plate having a through hole.
  • One side of the synchronous slider is mounted in a specific area formed between the bottom surface of the keycap and at least one of the card members extending based on the two frames to realize the fine expansion and contraction of the synchronous slider there Rotating, and the other side is provided with two movable holes, and a pair of pivoting members are provided at the supporting plates corresponding to the pair of movable holes, the side edges pivoting with the two movable holes and the pair
  • the phase mounting is finely pivoted.
  • the two pivoting members on the supporting plate corresponding to the two movable holes of the synchronous sliding member are in the shape of a hook, and the two movable holes are arranged in a through form on the corresponding sides of the synchronous sliding member, and the two pivoting members have a slightly smaller
  • the portions of the two movable holes are used to ensure a fine pivoting of the synchronous slider about the side.
  • the support plate is defined by a rectangular area defined by the two sliding sets.
  • the sliding kit and the pivoting member on the support plate are integrally formed on the support plate by a punching process.
  • the switch mechanism includes: a switch diaphragm attached to the support plate and provided with a through hole for the movement of the telescopic assembly; an elastic member passing through the synchronous slider, one end and the bottom surface of the key cap In contrast, the other end is in contact with the switch contact of the switch diaphragm with its internal contact to press the contact of the elastic member against the switch contact of the switch diaphragm to open the signal when the key cap is pressed. When the elastic member is released, the signal of the switch is turned off to close the button.
  • a keyboard at least one of which uses the key lift switch device of the present invention.
  • An assembly jig for use in an assembly process of a frame/synchronous slider of a telescopic assembly of a key lift switch device of the present invention comprising:
  • a positioning portion having a receiving portion for accommodating at least one of the support plates at a predetermined position
  • a first/two movable mold portion having a pair of the frame of the telescopic assembly corresponding to the position of the at least one support plate received on the positioning portion / a cavity of the synchronous slider;
  • the first/second ejector portion has a thimble portion that ejects the pair of frames/the synchronizing slider from the cavity under the specified power to assemble the pair of frames with the corresponding support plates.
  • the positioning portion is provided with a positioning introduction member
  • the first/two movable mold portion is provided with a positioning guide member
  • the positioning portion and the first/two movable mold portion are precisely matched by the positioning and the positioning guide member and the positioning I guide member. Positioning.
  • a plurality of support plates on the positioning portion and a plurality of pairs of frames/synchronous slides on the first/two movable mold portions are in number, arrangement and position One-to-one correspondence.
  • the assembly process of the telescopic assembly of the key-up P-switch device in the keyboard includes the following steps: a. Using the positioning portion of the assembly jig of the present invention, the keyboard layout is arranged at the accommodating portion thereof Support plate
  • the positioning portion of the assembly jig of the present invention may be the positioning portion used in steps a to d, or may be an independently provided positioning portion, and a plurality of supporting plates are arranged at the receiving portion thereof according to the keyboard layout. ;
  • steps a and b are performed in synchronization, and step e is omitted due to the presence of step d.
  • the present invention has the following advantages:
  • the present invention goes beyond the strange circle of inertial thinking, abandoning the "link member" of the scissors structure and the meshing structure, and proposes a telescopic assembly composed of a pair of frames that are not in contact with each other and a synchronous slider to realize the key cap.
  • the guidance of the lifting action provides a brand new key lifting switch device for solving the ultra-thin keyboard button, which enriches the selectivity of the industry and consumers;
  • the corresponding jig and the assembly process brought about by the production process are simplified. Since the components of the telescopic assembly do not directly connect with each other, there is no need to deal with the scissors. An intermediate process such as connecting or engaging a connection, thereby improving the overall assembly efficiency of the button on the one hand, and reducing the complexity of the jig on the other hand, thereby obtaining a superior assembly accuracy with a simple jig;
  • the simplification of the assembly process further greatly improves the production efficiency of the product.
  • the assembly process of the key lifting switch device in the production process of the keyboard it is convenient to press the keyboard layout, and in a more simple manner, such as the telescopic assembly.
  • the two frames are arranged in a horizontally close manner instead of the X-shaped form of the scissor frame, and the components of the telescopic assembly are arranged on the movable mold, and then assembled with the support plate in sequence, thereby eliminating the labor force factor, which is undoubtedly
  • the production process of the ultra-thin keyboard brings revolutionary changes.
  • the key lifting switch device of the present invention and its corresponding assembly process have a more simplified structure, and can realize ultra-large-scale automatic keyboard production in a shorter time and with higher precision, and this effect has been measured by the applicant.
  • the face of the card not on paper.
  • Figure 1 is an assembled view of the key lift switch device of the present invention
  • FIG. 2 is a structural view of the telescopic assembly, the switch mechanism and the support plate assembled according to the present invention
  • FIG. 3 is a structural view of the telescopic assembly and the key cap assembled according to the present invention
  • FIG. 4 is a structural view of an assembly jig for assembling a frame of a telescopic assembly according to the present invention, and also shows a part of the components of the key elevating switch device, the state of which is an unejamped state;
  • Figure 5 is the ejected state of Figure 4;
  • FIG. 6 is a structural view of another assembly jig for assembling a synchronous slider of a telescopic assembly according to the present invention, and also shows a part of the components of the key lifting switch device, the state of which is an unejamped state;
  • Figure 7 is the ejected state of Figure 6;
  • the key lift switch device of the present invention is composed of a key cap 1, a telescopic assembly 2, a switch mechanism 3, and a support plate 4.
  • the main improvement of the key lift switch device of the present invention will be disclosed below as the telescopic assembly 2 and the bottom surface of the keycap 1 and the upper member of the upper surface of the support plate 4 associated with the improvement of the telescopic assembly 2.
  • the telescopic assembly 2 of the present invention comprises a pair of U-shaped frames 23, 25 having a symmetrical structure and a plate-like synchronous slider 21.
  • the U-shaped frames 23, 25 include a first frame 23 on the left side of Fig. 1 and a second frame 25 on the right side.
  • the two frames 23, 25 are symmetrical to each other to facilitate the fabrication of the mold.
  • the first frame 23 has a beam 231 slidably pivoted on the support plate 4 and two arm members 232, 233 respectively folded from the ends of the beam 231, at the ends of the beam 231 Whereas, there are extended pivots 2311, 2312 (the other pivot diagram is not shown, see FIG. 2 for more details), thereby making the first line formed by the pair of pivots 2311, 2312
  • the frame 23 provides the possibility of pivoting and sliding.
  • the ends of the two arm members 232, 233 in the extending direction are also respectively provided with pivots 2320, 2330 which project outwardly, whereby the first frame 23 is realized by a straight line formed by the pair of pivots 2320, 2330. Pivoting offers the possibility.
  • the second frame 25 has a beam 251 for slidably pivoting on the support plate 4 and two arm members 252, 253 which are respectively folded from the ends of the beam 251, and two of the beams 251. End part At this point, there are extended pivots 2511, 2512, thereby providing a possibility for the second frame 25 to pivot and slide with a straight line formed by the pair of pivots 2511, 2512.
  • the ends of the two arm members 252, 253 in the projecting direction are also respectively provided with pivots 2520, 2530 which project outwardly, whereby the second frame 25 is realized by a straight line formed by the pair of pivots 2520, 2530. Pivoting offers the possibility.
  • a gap must be maintained between the first frame 23 and the second frame 25 to ensure that they do not contact each other.
  • non-contact it may mean that the first frame 23 and the second frame 25 are physically inconsistent. Inverse, it can also be broadly referred to that even if the two are physically in direct contact, such contact does not affect the activity of the other frame 25, 23 by the force experienced by one of the frames 23, 25.
  • both the first frame 23 and the second frame 25 are U-shaped and symmetrical, the two are symmetrical as shown in FIG. 1 to form a cavity 20, which provides accommodation for other components.
  • Space see Figure 2.
  • the pair of card members 230, 250 A specific area will be defined by combining with the bottom surface of the keycap 1.
  • the shape of the two clips 230, 250 determines the size of the particular area to some extent and, therefore, may be partially cut to adjust the size of the particular area.
  • the synchronous slider 21 is substantially in the shape of a plate having a through hole 210, and the through hole 210 occupies a large area of the plane of the synchronous slider 21 so as to accommodate the switch mechanism 3 sufficiently.
  • the elastic member 31 (see Fig. 2).
  • the bumps 2112 and 2114 are placed in a specific area defined by the clips 230, 250 on the first frame 23 and the second frame 25 and the bottom surface of the keycap 1, in order to make the bumps 2112, 2114
  • the top edge 211 can slide and rotate a certain width in the specific area to achieve the loose connection of the fine telescopic rotation, and the size of the bumps 2112, 2114 is slightly smaller than the specific area and the specific area. Fit in shape, but bumps 2112, 2114 should not be too
  • the two movable holes 2121, 2122 of the other side 212 are loosely connected by inserting the two hooks 431, 432 to be described later, so as to realize the function of sliding and pivoting.
  • This unique design of the synchronizing slider 21 stipulates that the overall area needs to be less than or equal to the cavity 20 defined by the two frames 23 and 25, and the two sides 211, 212 for connecting are required to be two
  • the arms 232, 233, 252, 253 of the frames 25, 25 are substantially parallel, whereby the clamping members 230, 250 of the two frames 23, 25 can be pressed by the lifting movement of the synchronizing slider 21 under stress.
  • the first frame 23 and the second frame 25 are simultaneously raised and lowered in the downward movement or when the keycap 1 is pressed (in the ascending movement).
  • the key cap 1 is a one-piece cap body, and the face facing the reader in FIG. 1 is a bottom surface thereof, and the bottom surface has a shape with a recessed space, and the side faces are respectively arranged side by side for mounting.
  • Two pivoting kits of the first frame 23 and the second frame 25 (112 and 114 are the same pivoting kit, 122 and 124 are the same pivoting kit, the same below), and the first set of pivoting kits (112, 114) are located
  • the middle of the bottom surface of the keycap 1 is slightly to the left side, and the second set of pivoting kits (122, 124) are located on the right side of the middle of the bottom surface of the keycap 1.
  • Each set of pivoting kits is composed of two sets of pivoting kits 112 that are distant from each other. , 114, 122, 124, each pivoting sleeve 112, 114, 122, 124 has a pivot hole (such as 1120), and a card inlet is also provided at the bottom edge of the pivot hole (such as 1120), thereby Each set of pivoting kits can be rotated by a shaft or a component corresponding to the shaft about its two pivoting holes (eg, 1120). It should be noted that the two sets of pivoting kits are parallel and phase-separated, so that a certain axis or a component corresponding to the shaft is also separated from each other.
  • the switch mechanism 3 includes an elastic member 31 and a switch diaphragm 32.
  • the elastic member 31 has a contact (not shown) therein, and a switch is also formed in the middle of the switch diaphragm 32.
  • the contact member 320, the elastic member 31 is disposed with the bottom portion 312 corresponding to the middle portion of the switch diaphragm 32, and the top portion 310 thereof is disposed against the middle of the bottom surface of the keycap 1, and the elastic member 31 can be internally pressed by the pressing of the key cap 1.
  • the contact contacts the switch contact 320 of the switch diaphragm 32 to close it to produce a signal output corresponding to the key, and upon retraction of the elastic 31 piece, the switch diaphragm 32 releases the switch contact due to pressure removal. 320 Turns off the output of the signal.
  • the structure and working principle of the switching mechanism 3 are mostly seen in well-known techniques, and thus will not be described.
  • the elastic member 31 is sized to pass through the through hole 210 of the synchronizing slider 21 of the telescopic assembly 2.
  • the switch diaphragm 32 is covered on the support plate 4.
  • the switch diaphragm 32 is further provided with hollowed out regions 321, 322 so that some members of the support plate 4 are worn.
  • the regions 321 and 322 are mounted to the telescopic assembly 2.
  • the support plate 4 is used for supporting the entire button, and is formed of a sheet metal material.
  • the two sets of sliding kits (4110, 4112, 4120, 4122) are integrally formed by a punching process.
  • a group of 4210, 4212, 4220, 4222, and a pair of pivoting members 431, 432 project outwardly from the upper surface of the support plate 4 to pass through the hollowed out area 321 of the switch diaphragm 32. , 322 is installed with the telescopic component 2.
  • Each set of sliding kits includes two slot forming members (4110 and 4112; 4120 and 4122; 4210 and 4212; 4220 and 4222, the same below), and each slot forming member includes a hook 4110, 4120, 4210, 4220 And a limit block 4112, 4122, 4212, 4222, a hook 4110, 4120, 4210, 4220 and a limit block 4112, 4122, 4212, 4222 jointly define an active area (refer to reference numeral 4100 in Fig. 2, It is intended to representatively show the active areas defined by 4110 and 4112, while the two sets of sliding kits together define a rectangular area.
  • the pair of pivot members 431, 432 are defined to be disposed within a rectangular area.
  • two groove forming members (4110 and 4112; 4120 and 4122) of the first set of sliding sets (4110, 4112, 4120, 4122 are combined) are used for the beam of the first frame 23 of the telescopic assembly 2
  • the pivots 2311, 2312 at both ends of the 231 are connected, and the sliding ranges of the two transverse axes 2311, 2312 of the beam 231 of the first frame 23 are constrained by the two movable regions formed by the two groove forming members of the first set of sliding sets.
  • two slot forming members (4210 and 4212; 4220 and 4222) of the second set of sliding assemblies (4210, 4212, 4220, 4222) are used for the beam 251 with the second frame 25 of the telescopic assembly 2.
  • the pivots 2511, 2512 at both ends are connected, and the sliding ranges of the two pivots 2511, 2512 of the cross member 251 of the second frame 25 are constrained by the two movable regions formed by the two groove forming members of the second set of sliding sets, thereby
  • the two pivots 2511, 2512 thereof are respectively restricted by the two hooks 4210, 4220, and when the second frame 25 slides to the outside of the support plate 4, Its beam 251 is limited by two limiting blocks 4212, 4222.
  • the first frame 23 is snapped into the first set of pivoting kits (112, 114) of the keycap 1 with the two pivots 2320, 2330 at the ends of its arms 232, 233.
  • Two groove forming members (4110) for pivoting holes 112, 114 and first sliding sets (4110, 4112, 4120, 4122) which are fitted into the support plate 4 by pivots 2311, 2312 at both ends of the beam 231 And 4112; 4120 and 4122), the installation of the first frame 23 is realized; similarly, the second frame 25 is inserted into the keycap 1 with the two pivots 2520, 2530 at the ends of the arms 252, 253
  • Two pivoting holes 122, 124 of the two sets of pivoting kits (122, 124), and a second sliding set (4210, 4212, 4220) on the support plate 4 with pivots 2511, 2512 at both ends of the beam 251 4722 is formed in two groove forming members (4210 and 4212; 4220 and 4222), thereby realizing the installation of the
  • the corresponding hooks are limited, in which case the two frames are roughly "eight" in cross section, and in the process of the keycap 1 descending to the lowest height, the beams 231, 251 at the bottom of the two frames 23, 25
  • the back side slides to the outside of the support plate 4 and rotates slightly until it is restrained by the corresponding stop block on the support plate 4, at which time the two frames 23, 25 are substantially "-_" in the cross section.
  • a gap is maintained between the first frame 23 and the second frame 25 so that the two do not contact each other.
  • the pair of pivoting members 431, 432 are in the shape of opposite hooks, having an upright portion and an end projecting in a vertical direction perpendicular to the standing portion, the pair of pivoting members 431, 432 respectively Adjacent to each of the slot forming members (4110 and 4112; 4210 and 4212) on the same side of the first sliding kit and the second sliding kit.
  • the pivoting members 431, 432 are connected to the bottom edge 212 of the synchronizing slider 21 of the telescopic assembly 2, and the two movable holes 2121, 2122 of the bottom edge 212 of the synchronizing slider 21 are provided for the pair of pivoting members 431, After the 432 is inserted therein, since the pivoting members 431, 432 have the tapered end, they are not easily detached from the support plate 4 to achieve a relatively stable connection, but it is considered that the synchronous slider 21 needs to be made in the vertical direction of the button. With a small amount of lifting movement, the pivoting members 431, 432 cannot be tightly coupled with the movable holes.
  • the present invention processes the upright members of the pair of pivoting members 431, 432 to be slightly smaller than the corresponding movable holes 2121 of the bottom side 212 of the synchronous slider 21,
  • the bottom edge of the synchronous slider 21 is mounted with the pivoting members 431, 432, and the top edge 211 is loosely mounted in a specific area formed by the bottom surface of the keycap 1, thereby accompanying the lifting action of the keycap 1.
  • the synchronous slider 21 can be synchronously lifted and lowered in a small amplitude, and the first frame 23 and the third frame 23 can be driven while maintaining the relatively smooth movement between the bottom surface of the keycap 1 and the upper surface of the support plate 4 by the top edge 211 and the bottom edge 212 thereof.
  • the second frame 25 is synchronously raised and lowered, thereby strongly ensuring the smoothness of the keycap 1 during the lifting process.
  • the structure of the key lift switch device of the present invention has been clearly revealed, and its assembly process will be further revealed as follows in conjunction with its assembly jig.
  • the assembly jig for assembling the telescopic assembly 2 of the present invention on the support plate 4 includes a positioning portion 51 , a first movable mold portion 52 , and a second movable mold portion 53 .
  • the positioning portion 51 has a receiving portion 510 that accommodates a support plate 4 at a predetermined position.
  • the support plate 4 is assumed to have the switch mechanism 3 installed, and the switch diaphragm 32 and the elastic member 31 have been Mounted on the support plate 4, the positioning portion 51 is further provided with two positioning and guiding members 511, 512, which are columnar.
  • the first movable part 52 is provided with a cavity 520 for receiving the first frame 23 and the second frame 25, and a positioning guide 521 corresponding to the two positioning and guiding members 511, 512 is provided. 522, for example, in the shape of a hole. Since the first frame 23 and the second frame 25 can be disposed apart from each other, the two are in a "__" shape when they are accommodated, and this structure undoubtedly improves the success rate in the assembly process.
  • the first ejector portion 54 includes a ejector portion 540. As shown in FIG. 5, it drives the ejector pin portion 540 through the first movable mold portion 52 directly from the cavity 520 under the action of a specified power.
  • the first frame 23 and the second frame 25 housed thereon are fitted to the support plate 4 in the positioning portion 51 to form an assembly effect as shown in Fig. 2.
  • the second movable mold portion 53 is provided with a cavity 530 for receiving the synchronous slider 21 , and is provided with corresponding two positioning and guiding members 511 .
  • the positioning guides 531, 532 of 512 are, for example, in the shape of a hole.
  • the second ejector portion 55 includes a ejector portion 550. As shown in FIG. 7, it drives the ejector pin portion 550 through the second movable mold portion 53 directly from the cavity 530 under the action of a specified power.
  • the synchronizing slider 21 accommodated thereon is closely fitted to the support plate 4 in the positioning portion 51 to form an assembly effect as shown in Fig. 2.
  • the positioning between the positioning portion 51 and the first movable mold portion 52 or the second movable mold portion 53 is achieved by positioning the introduction members 511, 512 and the positioning guides 521, 522, 531, 532.
  • the close fitting is realized, since the accommodating portion 510 of the positioning portion 51 and the cavity of the movable mold portion have been precisely designed at the time of mold making, the positioning introduction members 511, 512 and the positioning guides 521, 522, 531, 532 are matched.
  • the relative positional relationship between the first frame 23 and the second frame 25 and the synchronizing slider 21 and the supporting plate 4 is quite precise, so that although the body of the button is actively small, the precision in the assembly process can be ensured. See Figure 2 for the overall installation effect.
  • a jig of a keyboard to which the key lift switch device of the present invention is applied can be derived from the fixture of a key lift switch device. Specifically, it only needs to follow the keyboard layout in the positioning portion 51 described above.
  • a plurality of support plates 4 on which the switch mechanism 3 is mounted are arranged in the accommodating portion 510, and corresponding numbers are provided corresponding to the accommodating portions 510 of the positioning portions 51 in the cavity 520 of the first movable mold portion 52 in accordance with the keyboard layout.
  • a pair of a frame 23 and a second frame 25 ensure a corresponding relationship between the plurality of pairs of frames (23, 25) and the plurality of support plates 4 in number, arrangement, position; and a type in the second movable mold portion 53
  • Corresponding relationship between the plurality of synchronous sliders 21 and the plurality of support plates 4 in the number, arrangement and position is set corresponding to the accommodating portion 510 of the positioning portion 51 according to the keyboard layout. ; It can form the assembly fixture of the entire keyboard.
  • FIG. 1 and FIG. 4 to FIG. 7 Please refer to FIG. 1 and FIG. 4 to FIG. 7 as follows. Taking a keyboard as an example, the assembly process involving the 2 parts of the telescopic assembly is disclosed, including the following steps:
  • a. preparation steps a plurality of support plates 4 are arranged according to the keyboard layout, and the switch diaphragm 32 and the elastic member 31 of the switch mechanism 3 are installed for each support plate 4;
  • the support plate group 4 arranged in the keyboard layout is placed in the receiving portion 510 of the positioning portion 51 to be stably received;
  • the first ejector portion 54 drives the thimble portion 540 directly acting on the cavity 520 of the first movable mold portion 52 under the specified pressure to dispose the plurality of pairs of frames (23, 25) arranged in the keyboard layout Ejected onto the receiving portion 510 of the positioning portion 51, the pivots 2310, 2510 at the ends of the respective beams 231, 251 of the first frame 23 and the second frame 25 of each pair of frames (23, 25) are Instantly fitting into a corresponding sliding kit (set of 4110, 4112, 4120, 4122, set of 4210, 4212, 4220, 4222) that is nested or embedded in the corresponding support plate 4; f.
  • the position of the first movable mold portion 52 and the first ejector portion 54 is placed by the second movable mold portion 53 and the second ejector portion 55, and the positioning guides 531 and 532 of the second movable mold portion 53 are set.
  • the positioning introduction members 511 and 512 of the positioning portion 51 realize the precise correspondence between the cavity 530 and the receiving portion 510;
  • the second ejector portion 55 under the action of the specified pressure, drives the ejector pin portion 550 to directly act on the cavity 530 of the second movable mold portion 53 to arrange the plurality of synchronous sliders 21 arranged in a keyboard layout.
  • the two movable holes 2121, 2122 of the respective bottom edges 212 of each of the synchronizing sliders 21 are instantaneously nested or embedded in the corresponding pivoting members on the corresponding supporting plates 4. 431, 432 to achieve assembly.
  • the keyboard assembled according to the above steps only needs to further assemble the plurality of keycaps 1 arranged in the keyboard layout and the plurality of telescopic components 2 mounted on the support plate 4 on the positioning portion 51 in a similar manner. Just fine.
  • the above steps b and c can be performed simultaneously, and the step f can be performed before any time between the steps b and e, so that the time is greatly saved as a whole.
  • the positioning portions 51 are identical, but the present invention does not exclude the possibility of assembling with different positioning portions.
  • connection relationship between the frame and the key cap can be realized by providing a pivot on the bottom surface of the key cap and providing a pivot hole on the outer side of the two arm members of the frame; for the manner in which the top edge of the synchronous slider is connected with the key cap, the bottom edge thereof can be The manner of connection with the support plate is interchanged; the specific shape of the synchronous slider can also be adapted; and, under the premise that the production process is sufficiently precise, the connection between the bottom edge of the synchronous slider and the support plate can be used.
  • the pivot and the pivot hole are pivoted and the like. And so on, It should be a simple change that should be known to those of ordinary skill in the art.
  • the invention overcomes the fixed thinking, simplifies the structure of the key lifting switch device, improves the assembly jig, optimizes the assembly process, and further improves the production efficiency of the keyboard and the yield of the finished product.

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Description

键升降开关装置及其组装夹具和组装工艺
【技术领域】
本发明涉及键盘的键升降开关装置, 尤其涉及作为电子仪器的输入装置 的键盘中的超薄型按键的键升降开关装置, 还涉及与此一键升降开关装置相 应的按键的自动组装方法。
【背景技术】
中国台湾省申请人精元电脑股份有限公司在中国申请的主题为 "超薄型 键盘按键", 于 2000年 3月 1 日公告, 公告号为 CN2366889Y。 该专利代表了 早期的超薄型键盘按键的主流结构, 被普遍应用于各种笔记本电脑的键盘中, 受到一定的欢迎。 其结构请参阅该份公告的说明书, 主要包括键帽、 定位板、 第一框架、 第二框架、 弹性体、 薄膜电路板及底板, 键帽底面上成型有轴枢 部、 导滑槽、 按压部及数片定位挡板; 定位板上镂空成型有导滑槽及轴枢部; 以第一框架与第二框架为剪刀式支撑结构, 并枢接组装于键帽轴枢部与定位 板轴枢部之间, 弹性体置于键帽底面按压部处, 薄膜电路板位于弹性体及底 板之间。 由此, 伴随手指按压和弹性体的回释力, 键帽随之升降, 而在升降 的过程中, 藉由剪刀式支撑结构的第一框架和第二框架在键帽与定位板上的 导滑槽的滑动实现键帽相对于定位板的平稳均匀下降, 同时藉由弹性体的回 释力而平稳均匀上升, 其中发挥重要作用的结构便在于该剪刀式结构。
CN2366889Y的这种结构的最大的不足在于由此带来的组装工艺上,其第 一框架与第二框架之间的组装、 第一框架和第二框架与键帽和定位板的组装, 以及整体结构的组装等, 由于存在多个微小孔位与枢轴的配合, 导致不便于 实现流水化生产, 从而影响生产效率。 即使其中部分易组装的环节实现机械 化, 也非常容易使成品合格率大幅降低。
另一方面, 第一框架及第二框架在注塑成型时, 须互相分隔, 并在注塑 后形成以手工或治具的形式重新组合成对, 从而也增加了组装成本。
进而, 申请人富士通电子零件有限公司作为业内同行提出了新的技术方 案, 详见 2006年 1月 4日公开的 CN1716483A号专利公告, 其保护一种键开 关装置,很明显针对前述专利的垄断而做出研发性改进,揭示采用一对呈倒 V 型的一对连杆部件代替前述剪刀式结构, 具体不同之处在于构成 V型连杆部 件的两个组件任意之一, 一端可在定位板上滑动, 而另一端彼此以齿相啮合 而且均枢设在键帽底面。 由于连杆部件的啮合关系, 使得整个连杆部件在受 力作用时可同步开合而在定位板的滑槽中实现滑动, 从而进一步带动键帽在 垂直方向上平稳均勾地升降。
需要注意的是, CN1716483 A号专利公告中述及的 "相互连动以在所述支 承板的上方向升降方向导引支承所述键顶部的一对连杆部件" 的连杆部件一 词, 也以上位化的形式概括了 CN2366889Y号专利公告的剪刀式结构: 连杆 部件必须具有一对共两个组件, 两个组件相互连接运动。 正是这样的限定导 致了本发明引用的此两份专利的技术方案均无法克服装配过程的缺陷。 CN2366889Y的缺陷已在前分析, 而 CN1716483A的缺陷也是明显的, 除了 连杆部件的滑动端在定位板上的安装的不便外, 更重要的还在于连杆部件的 齿式啮合关系的组装上, 往往很难完美地进行相互配合, 从而导致成品合格 率较低。
此夕卜, CN1716483A号专利公告的连杆部件不易以使用时的啮合状注塑成 型, 而必须以分隔一段距离的方式存在于注塑模具当中, 且注塑成型后必须 用手工方式重新定位于定位板及键帽之间, 或用治具式组装方式, 对分隔注 塑成形的连杆部件重新组合安装, 难以控制组装的精度及人力成本。
再者, 上述两份公告所记载的有啮合功能的连杆部件或剪刀式框架, 由 于注塑成型后仍需用手工或治具重新组合安装, 且由于键盘的小型化及超薄 化的要求, 令上述连杆部件或框架日趋小形化, 故治具的精度不易实现。 然而, 以上述两专利公告所代表的相关专利大量如今存在于世界各国各 地区的专利数据库中, 足证本领域研发人员的惯性思维均系基于 "连杆部件" 出发, 多年来未能走出此一定势思维, 另一方面, 由于各专利的刻意上位化 和专利权人对专利权的既得, 又进一步限制了研发人员的研发思维无法自由 飞翔。 由此, 至少在近一个年代期间, 申请人认为, 键升降开关装置未曾取 得技术上的飞跃。
但是, 科技的发展趋势与市场间白热化竟争亟需此一飞跃。 本申请人从 事本领域研发多年, 本着条条大道通罗马的信念, 从研发之初便将思维独立 于前述 "连杆部件" 之外, 一直致力于探究一种可克服以上述两份专利公告 为代表的各种技术方案所固有的不足的新方案, 现已达成目标, 并最终在生 产上得以实践论证。
【发明内容】
因此, 本发明的提出有如下目的:
首要目的在于提供一种键升降开关装置, 以避免使用 "连杆部件" 的枢 设或啮合结构, 在简化内部结构降低注塑模具成本的同时, 在注塑成型后无 须逐个重新排列便可简易地进行组装, 也可实现平衡稳定的键帽升降以实施 开关的操作;
另一目的在于提供一种键盘, 以实现本发明键升降开关装置的应用; 又一目的在于提供一种组装夹具, 以实现本发明键升降开关装置的组装 工艺, 使构成各个相应部件在模具中能以键盘布局的方式作紧密排列, 高精 度进行装配, 从而节省各部件的落料及重新排列的组装步驟, 提高生产效率 和成品合格率, 为高度自动化生产的实现提供实质性技术基础和技术保障; 再一目的在于提供一种应用本发明的组装夹具的组装工艺, 以优化工艺 流程, 提高生产效率。 为了实现上述目的, 本发明采用如下技术方案:
一种键升降开关装置, 包括位于支承板上方的键帽、 在键帽受按压或受 回释力进行升或降时, 维持键帽相对于支承板的平衡的伸缩组件、 对应于所 述键帽的升、 降动作闭、 开该键信号的开关机构, 所述伸缩组件包括:
互不接触对向设置且形成有空腔的一对框架, 两框架各自的对应底边分 别可滑动设置于支承板两侧预设的两滑动套件中, 而各自的对应顶部则与键 帽底部预设的两枢设套件相枢设;
至少一个用于压制该对框架同步升降的同步滑件, 经过该对框架的空腔 设置, 其一侧被枢设在支承板 /键帽底面上, 另一侧被限定为紧随键帽底面 / 支 7 板特定区域伸缩活动。
较佳的, 所述伸缩组件中, 两个框架呈对称结构。
具体的, 所述伸缩组件中, 该对框架任意之一呈 U型, 具有一横梁及自 该横梁折出的两臂件, 横梁两端各伸出一枢轴以与所述支承板的一滑动套件 相装设; 两臂件的末端, 各向外侧伸出一枢轴以与所述键帽底面的一枢设套 件相枢设。 所述支承板上的两滑动套件任意之一均包括以对应于所述横梁长 度的距离对称分设的两槽形成件, 每一槽形成件包括一设于支承板表面的勾 企和一距离该勾企一定长度设置的限位块, 该勾企与限位块之间的活动区域 定义装设其上的所述框架横梁的滑动量程。 所述键帽底面的两枢设套件任意 之一均包括以对应于所述两臂件末端的距离对称分设的两枢设孔, 相应的框 架以其两臂件侧边的两枢轴与该两枢设孔对应装设以便该框架可枢转。 所述 两枢设套件各自的一个同侧的枢设孔相距设置以保持两相应框架之间的互不 接触。 所述同步滑件呈具有通孔的板状。 所述同步滑件的一侧边被装设于所 述键帽底面与基于所述两个框架伸出的至少一个卡件之间形成的特定区域内 以实现同步滑件在该处的细微伸缩旋转, 而另一侧边设有两活动孔, 与该对 活动孔相应的支承板处设有一对枢转件, 该侧边以其两个活动孔与该对枢转 件相装设实现细微枢转。 所述支承板上对应于同步滑件的两活动孔的两枢转 件呈勾企状, 所述两活动孔系自同步滑件的相应边上以贯通形式设置, 两枢 转件具有略小于两活动孔的部位以保证同步滑件绕该边的细微枢转。 所述支 承板上, 所述两枢转件被限定在所述两滑动套件所定义的矩形面积内。 所述 支承板上的滑动套件和枢转件通过沖切工艺在支承板上一体成型。
所述开关机构包括: 开关膜片, 其贴设在支承板上, 并设有供所述伸缩 组件活动的通孔; 弹性件, 其穿过所述同步滑件, 一端与所述键帽底面相抵 触, 另一端以其内部的触点与开关膜片的开关触点相对应接触设置, 以在键 帽受压时压迫弹性件的触点抵触开关膜片的开关触点开通该键的信号, 而在 弹性件回释时则离开该开关触点关闭该键的信号。
一种键盘, 其至少一个按键采用本发明所述的键升降开关装置。
一种组装夹具, 应用于本发明键升降开关装置的伸缩组件的框架 /同步滑 件的组装工艺中, 包括:
定位部, 具有以规定位置容纳至少一个所述支承板的收容部;
第一 /二动模部, 具有与收容在定位部上的至少一个支承板位置相对应的 所述伸缩组件的该对框架 /该同步滑件的型腔;
第一 /二顶出部, 具有在指定动力作用下, 从所述型腔顶出所述一对框架 / 该同步滑件以使该对框架与相应的支承板相装配的顶针部。
所述定位部设有定位导入件, 所述第一 /二动模部设有定位引导件, 定位 部与第一 /二动模部藉由定位导入件和定位 I导件的紧密配合实现精确定位。
在应用多个所述键升降开关装置的键盘中, 所述定位部上的多个支承板 与第一 /二动模部上的多对框架 /多个同步滑件在数量、 排列及位置上一一对 应。
一种键盘中键升 P条开关装置的伸缩组件的组装工艺, 包括如下步骤: a. 釆用本发明的组装夹具的定位部, 按键盘布局在其收容部处排列好多 个支承板;
b. 釆用本发明的组装夹具的第一动模部, 按键盘布局在其型腔中与步驟 a中的定位部的支 7 板——对应地排列好多个伸缩组件的框架;
c 移动步骤 b的第一动模部至与步驟 a的定位部相对应的位置, 以第一 动模部的定位导入件与该定位部的定位引导件紧密配合实现精确定位;
d. 釆用本发明的组装夹具的第一顶出部施加指定动力利用其顶针部顶出 所述多对框架与所述多个支 板稳定装配;
e. 采用本发明的组装夹具的定位部, 该定位部既可为步驟 a至 d中采用 的定位部, 也可为独立提供的定位部, 按键盘布局在其收容部处排列好多个 支承板;
f. 采用本发明的组装夹具的第二动模部, 按键盘布局在其型腔中与步驟 e中的定位部的支 板——对应地排列好多个伸缩组件的同步滑件;
g. 移动步骤 f的第二动模部至与步骤 e的定位部相对应的位置, 以第二 动模部的定位导入件与该定位部的定位引导件紧密配合实现精确定位;
h. 釆用本发明的组装夹具的第二顶出部施加指定动力利用其顶针部顶出 所述多对框架与所述多个支^ c板稳定装配。
在采用两个定位部分别用于夹持框架和同步滑件时 ,所述步驟 a和步骤 b 同时执行, 所述步驟 e和步驟 f同时执行。
在采用一个定位部用于先后夹持框架和同步滑件时, 步骤 a和 b 同步执 行, 而步骤 e由于步驟 d的存在而省略。
与现有技术相比较, 本发明具有如下优点:
首先, 本发明超出惯性思维的怪圈,摒弃剪刀式结构和啮合结构的等 "连 杆部件", 提出由互不相接触的一对框架和一同步滑件相配合组成的伸缩组件 实现对键帽的升降动作的导引, 为解决超薄化键盘按键提供了一种全新的键 升降开关装置, 丰富了业内及消费者的可选择性; 其次, 由于该伸缩组件的结构的简易化, 使得其生产工艺中相应的夹具 及由此带来的组装工艺被简化, 由于伸缩组件的构件彼此之间不发生直接连 接关系, 不需要处理剪刀式连接或啮合连接之类的中间过程, 因而, 一方面 按键的整体组装效率得以提高, 另一方面其夹具的复杂程度也被降低, 得以 较简易的夹具获得较优良的装配精度;
再者, 由于组装工艺的复杂度的下降, 避免了如处理剪刀式连接和啮合 连接之类的安装细节, 在组装过程中, 这些细节的存在会因为工件的过份微 细而导致工件本身机械故障的增加从而降低成品合格率, 而组装工艺复杂度 的下降, 使得伸缩组件仅需考虑几个枢设的连接关系, 相对而言, 便可大大 提高成品合格率;
此外, 组装工艺的简化, 也进一步大大提高产品的生产效率, 具体而言, 在键盘的生产过程中的键升降开关装置组装环节, 便于按键盘布局, 以更为 简易的方式如将伸缩组件的两个框架以水平紧贴的方式而非剪刀式框架的 X 型方式在动模上排布好伸缩组件的各个构件, 然后依序与支承板相组装即可, 极力排除人力劳动因素, 无疑为超薄型键盘的生产工艺带来革命性的变化。
概况而言, 本发明键升降开关装置及其相应的组装工艺, 具有更简化的 结构, 可用更短的时间、 更高的精度实现超大规模的自动化键盘生产, 此一 效果已在申请人的实测中脸证, 而非纸上谈兵。
【附图说明】
图 1为本发明的键升降开关装置的装配图;
图 2为本发明的伸缩组件、 开关机构与支承板相组装后的结构图; 图 3为本发明的伸缩组件与键帽组装后的结构图;
图 4 为本发明的一套用于组装伸缩组件的框架的组装夹具的结构图, 同 时还示出键升降开关装置的部分构件, 其状态为未顶出状态; 图 5为图 4的已顶出状态;
图 6 为本发明的另一套用于组装伸缩组件的同步滑件的组装夹具的结构 图, 同时还示出键升降开关装置的部分构件, 其状态为未顶出状态;
图 7为图 6的已顶出状态;
【具体实施方式】
下面结合附图和实施例对本发明作进一步的说明:
参阅图 1所示, 本发明的键升降开关装置, 由键帽 1、 伸缩组件 2、 开关 机构 3 以及支承板 4构成。 如下将揭示本发明键升降开关装置的主要改进之 处 在于伸缩组件 2及与伸缩组件 2的改进相关的键帽 1底面和支承板 4 上表面上的部分构件。
请先理解本发明的伸缩组件 2的具体构造:
结合图 1和图 2, 本发明的伸缩组件 2包括一对具有对称结构的 U型框 架 23 , 25和一个板状的同步滑件 21。
所述的 U型框架 23 , 25 , 包括图 1左侧的第一框架 23和右侧的第二框 架 25 , 两框架 23 , 25相互对称, 便于模具的制作。
所述的第一框架 23 , 具有一用于可滑动枢设在支承板 4上的横梁 231和 两个分别自该横梁 231两端折出的臂件 232 , 233 , 在横梁 231的两端部位处, 均设有伸出的枢轴 2311 , 2312 (另一枢轴图 1未示出, 参阅图 2更详尽), 由 此, 便为以该对枢轴 2311, 2312构成的直线使第一框架 23 实现枢转及滑动 提供可能。 在两臂件 232, 233的伸出方向的末端也分别设有向外侧伸出的枢 轴 2320, 2330, 由此, 也为以该对枢轴 2320, 2330构成的直线使第一框架 23实现枢转提供可能。
所述的第二框架 25 ,同理具有一用于可滑动枢设在支承板 4上的横梁 251 和两个分别自该横梁 251两端折出的臂件 252, 253 , 在横梁 251的两端部位 处, 均设有伸出的枢轴 2511 , 2512, 由此, 便为以该对枢轴 2511 , 2512构成 的直线使第二框架 25 实现枢转及滑动提供可能。 在两臂件 252, 253 的伸出 方向的末端也分别设有向外侧伸出的枢轴 2520 , 2530, 由此, 也为以该对枢 轴 2520, 2530构成的直线使第二框架 25实现枢转提供可能。
第一框架 23与第二框架 25之间须保持间隙以保证彼此间互不接触, 对 于互不接触的界定, 既可以是狭义地指第一框架 23与第二框架 25在物理上 的不相抵触, 也可以是广义地指即使两者在物理上直接相接触, 这种接触也 不会使框架 23 , 25之一所受到的力影响另一个框架 25 , 23的活动。 本领域 内普通技术人员应知晓此一等同替换原则。
由于第一框架 23与第二框架 25均采用 U型设计, 且相对称设置, 故而 两者如图 1所示相对称设置可形成一个空腔 20,该空腔 20为其它构件提供了 容置空间(参阅图 2 )。而在第一框架 23的臂件 233和第二框架 25的臂件 253 的两端内侧, 还分别设有一个内伸的卡件 230和 250 (参阅图 1 ), 该对卡件 230, 250将与键帽 1的底面相结合定义出一个特定区域。 两卡件 230, 250的 形状在某种程度上决定了该特定区域的大小, 因而, 可呈被局部切削状以调 节该特定区域的大小。
请进一步结合图 1、 2、 3 , 所述的同步滑件 21 , 大致呈具有通孔 210的 板状, 该通孔 210占据同步滑件 21平面的较大面积, 以便足够容置开关机构 3中的弹性件 31 (参阅图 2 )。 在同步滑件 21的一侧边即顶边 211上, 设有两 个凸块 2112, 2114, 而另一相对的侧边即底边 212上则设有两个贯通的活动 孔 2121 , 2122。 凸块 2112和 2114被置入所述由第一框架 23和第二框架 25 上的卡件 230, 250 与键帽 1 底面之间共同定义的特定区域中, 为了使凸块 2112 , 2114所在的顶边 211可在该特定区域内 文一定幅度的细 4¾滑动和转动, 达到细微伸缩旋转的松动连接的目的, 而将凸块 2112 , 2114的大小加工成略 小于该特定区域且与该特定区域在形状上相配合, 但凸块 2112, 2114不宜太 另一侧边 212的两活动孔 2121, 2122, 在后述将通过插置入两个勾企 431, 432而实现可松动的连接, 以实现细 ϋ滑动和枢转的功能。
同步滑件 21的这种独特设计, 规定了其整体面积需小于或等于两个框架 23和 25所定义的空腔 20, 且其用于连接的两条侧边 211 , 212均需与两个框 架 25 , 25的臂件 232, 233 , 252, 253大致相平行, 由此, 通过同步滑件 21 在受力时的升降运动, 便可以压制两个框架 23 , 25的卡件 230, 250 (下降运 动时)或压制键帽 1 (上升运动时)而使第一框架 23和第二框架 25同步升降。
伸缩组件 2的这种结构, 可实现第一框架 23与第二框架 25的同步升降 操作, 从而, 装设其上的键帽 1将能进行平稳的升降。
参阅图 1和图 3 , 所述键帽 1 , 为一方状帽体, 图 1中朝向读者的面为其 底面, 该底面呈具有凹陷空间的形状, 其上设有并排的分别用于装设第一框 架 23和第二框架 25的两枢设套件( 112和 114为一同一枢设套件, 122和 124 为同一枢设套件, 下同), 第一组枢设套件 (112, 114 )位于键帽 1底面中部 略偏左一侧, 第二组枢设套件 ( 122, 124 )位于键帽 1底面中部略偏右一侧, 每组枢设套件均由两组相互远离的枢设套件 112 , 114, 122 , 124组成, 每一 枢设套件 112 , 114, 122 , 124均具有枢设孔(如 1120 ), 在枢设孔(如 1120 ) 的底缘还设有卡入口, 由此, 每一组枢设套件均可由一个轴或相当于轴的部 件绕其两个枢设孔(如 1120 )旋转。 需要注意的是, 两组枢设套件是相互平 行且相分离的, 由此装设其上的某轴或相当于轴的某部件同理也将彼此相分 隔。
参阅图 1和图 2, 所述的开关机构 3, 包括一弹性件 31和一开关膜片 32, 弹性件 31内部具有一触点 (未图示), 开关膜片 32的中部也形成有开关触点 320, 弹性件 31以其底部 312与开关膜片 32的中部相对应设置, 而以其顶部 310抵触键帽 1的底面中部设置, 藉由键帽 1的按压, 弹性件 31可以其内部 的触点抵触开关膜片 32的开关触点 320使其闭合产生与该键相对应的信号输 出, 而在弹性 31件回释时, 开关膜片 32由于压力的移除而松开开关触点 320 关闭信号的输出。 开关机构 3 的结构及工作原理多见于公知技术, 因而不行 赘述。
弹性件 31的大小刚好穿过所述伸缩组件 2的同步滑件 21的通孔 210中。 开关膜片 32覆盖在支承板 4上,为使保证支承板 4与伸缩组件 2的机械连接, 开关膜片 32上还设置有挖空的区域 321 , 322, 以便支承板 4上的部分构件穿 过该区域 321 , 322与伸缩组件 2相装设。
参阅图 1和图 2, 所述支承板 4, 用于支承整个按键, 由钣金材料形成, 其上通过冲切工艺一体成型设置有两组滑动套件 ( 4110, 4112 , 4120 , 4122 构成的一组, 4210, 4212, 4220, 4222构成的一组, 下同)及一对枢转件 431 , 432,均外突于支承板 4上表面以便穿过所述开关膜片 32的挖空区域 321, 322 与伸缩组件 2相装设。 每一组滑动套件均包括两个槽形成件 (4110与 4112; 4120与 4122; 4210与 4212; 4220与 4222, 下同), 每个槽形成件均包括一 勾企 4110, 4120, 4210, 4220及一限位块 4112, 4122 , 4212 , 4222 , 一勾企 4110, 4120 , 4210, 4220与一限位块 4112, 4122 , 4212 , 4222共同限定一个 活动区域(可参阅如图 2的标号 4100, 力求代表性地示出 4110与 4112共同 定义的活动区域), 而两组滑动套件则共同定义一个矩形面积。 所述一对枢转 件 431 , 432被定义在矩形面积内设置。
具体而言, 第一组滑动套件 ( 4110 , 4112 , 4120, 4122 共同构成) 的两 个槽形成件 (4110与 4112; 4120与 4122 ) 用于与所述伸缩组件 2的第一框 架 23的横梁 231两端的枢轴 2311, 2312相连接, 第一框架 23横梁 231的两 个横轴 2311 , 2312的滑动量程被第一组滑动套件的两个槽形成件所形成的两 个活动区域所约束, 从而, 当第一框架 23向支承板 4的中部滑动时, 其两个 枢轴 2311, 2312分别被两个勾企 4110, 4120所限止, 而当第一框架 23向支 承板 4的外侧滑动时, 其横梁 231被两个限位块 4112 , 4122所限止。
同理, 第二组滑动套件(4210, 4212 , 4220, 4222共同构成) 的两个槽 形成件 ( 4210与 4212; 4220与 4222 ) 用于与所述伸缩组件 2的第二框架 25 的横梁 251两端的枢轴 2511 , 2512相连接, 第二框架 25横梁 251的两个枢 轴 2511 , 2512的滑动量程被第二组滑动套件的两个槽形成件所形成的两个活 动区域所约束, 从而, 当第二框架 25向支承板 4的中部滑动时, 其两个枢轴 2511 , 2512分别被两个勾企 4210, 4220所限止, 而当第二框架 25向支承板 4的外侧滑动时, 其横梁 251被两个限位块 4212, 4222所限止。
结合图 1、 图 2和图 3, 将第一框架 23以其臂件 232, 233末端的两枢轴 2320, 2330卡设入键帽 1的第一组枢设套件 ( 112, 114 ) 的两个枢设孔 112, 114, 且以其横梁 231 两端的枢轴 2311 , 2312套入支承板 4上的第一滑动套 件(4110, 4112, 4120, 4122共同构成)的两个槽形成件( 4110与 4112; 4120 与 4122 ) 中, 便实现了第一框架 23的安装; 同理, 将第二框架 25以其臂件 252, 253末端的两枢轴 2520, 2530卡设入键帽 1的第二组枢设套件 ( 122 , 124 ) 的两个枢设孔 122, 124, 且以其横梁 251两端的枢轴 2511, 2512套入 支承板 4上的第二滑动套件(4210, 4212, 4220, 4222共同构成) 的两个槽 形成件 (4210与 4212; 4220与 4222 ) 中, 由此, 便实现了第二框架 25的安 装;装设后的第一框架 23和第二框架 25 ,在键帽 1上升至最大高度的过程中 , 两个框架 23 , 25底部的横梁 231 , 251相对向向支 7 ^板 4中部滑动并略 £旋 转, 直至被支承板 4上的相应的勾企所限止, 此时两个框架在截面上大致呈 "八" 型, 而在键帽 1下降至最低高度的过程中, 两个框架 23 , 25底部的横 梁 231, 251相背向向支承板 4外侧滑动并略微旋转, 直至被支承板 4上的相 应的限位块所限止, 此时两个框架 23 , 25在截面上则大致呈 " - _ ', 型。 自 始至终, 第一框架 23和第二框架 25之间均保持有间隙, 以使两者相互不接 触。 所述的一对枢转件 431 , 432, 呈相背向的勾企状, 具有一个竖立的部位 和一个在该竖立部位垂直方向渐细伸出的末端, 该对枢转件 431, 432分别与 第一滑动套件和第二滑动套件的同侧的各一个槽形成件(4110与 4112; 4210 与 4212 )相邻设置。
枢转件 431 , 432用于与伸缩组件 2的同步滑件 21的底边 212相连接, 同步滑件 21的底边 212上具有的两个活动孔 2121 , 2122供该对枢转件 431 , 432插置其中后, 由于枢转件 431 , 432具有的渐细末端的作用而不易从支承 板 4上脱落而实现相对稳固的连接, 但是, 考虑到同步滑件 21需要在按键的 垂直方向做小幅度的升降运动, 不能将枢转件 431, 432与活动孔紧密结合, 本发明将该对枢转件 431 , 432的竖立部件处理成略小于同步滑件 21底边 212 相应活动孔 2121 , 2122的形状, 由此, 同步滑件 21的底边 212得以藉由其 活动孔 2121, 2122与所述枢转件 431, 432的松动连接而实现细微的旋转以 至升降运动。
同步滑件 21的底边得以与枢转件 431 , 432相装设, 而其顶边 211则得 以松动装设于键帽 1底面形成的特定区域中, 由此, 伴随键帽 1的升降动作, 同步滑件 21得以小幅度同步升降, 在以其顶边 211和底边 212共同维持键帽 1底面与支承板 4上表面之间的相对平稳移动的同时, 还可带动第一框架 23 和第二框架 25同步升降,从而强有力的保证了键帽 1在升降过程中的平稳性。
本发明的键升降开关装置的结构已清楚揭示, 如下将结合其组装夹具进 一步揭示其组装过程。
请结合图 1、 图 2、 图 4及图 5 , 用于将本发明的伸缩组件 2组装在支承 板 4上的组装夹具包括定位部 51、 第一动模部 52、 第二动模部 53、 第一顶出 部 54和第二顶出部 55。
所述定位部 51具有以规定位置容纳一个支承板 4的收容部 510, 该支承 板 4被假定为已装设好所述开关机构 3,包括开关膜片 32与弹性件 31均已被 装设在该支承板 4上,定位部 51上还设有两个定位导入件 511 , 512,呈柱状。 所述的第一动模部 52则设有用于收容所述第一框架 23和第二框架 25的 型腔 520, 且设有对应所述两个定位导入件 511 , 512的定位引导件 521 , 522, 例如呈孔状。 由于第一框架 23与第二框架 25可相距设置, 故而两者在被收 容时呈 " _ _ " 状, 这种结构无疑提高了组装过程中的成功率。
所述第一顶出部 54, 包括一顶针部 540, 如图 5所示, 其在指定动力作 用下, 驱动其顶针部 540穿过第一动模部 52直接从所述型腔 520中顶出收容 其上的第一框架 23和第二框架 25,使之与定位部 51中的支承板 4紧密装配, 形成图 2所示的组装效果。
同理, 参阅图 1、 图 2、 图 6和图 7, 第二动模部 53设有用于收容所述同 步滑件 21的型腔 530, 且设有对应所述两个定位导入件 511 , 512的定位引导 件 531, 532, 例如呈孔状。
所述第二顶出部 55 , 包括一顶针部 550, 如图 7所示, 其在指定动力作 用下, 驱动其顶针部 550穿过第二动模部 53直接从所述型腔 530中顶出收容 其上的同步滑件 21, 使之与定位部 51中的支承板 4紧密装配, 形成图 2所示 的组装效果。
结合图 4和图 6, 定位部 51与第一动模部 52或与第二动模部 53之间的 定位, 藉由定位导入件 511 , 512和定位引导件 521 , 522, 531 , 532的紧密 配合实现, 由于在制作模具之时已精确设计好定位部 51的收容部 510与动模 部的型腔, 因此, 定位导入件 511 , 512 和定位引导件 521 , 522, 531 , 532 相配合后, 第一框架 23和第二框架 25以及同步滑件 21 , 与支承板 4的相对 位置关系是相当精密的, 从而, 尽管按键的体积极小, 此举仍可保证装配工 艺中的精度, 整体安装效果请参阅图 2。
由一个键升降开关装置的夹具同理可推导出一个应用本发明的键升降开 关装置的键盘的夹具。 具体而言, 只需按照键盘布局, 在上述定位部 51中的 收容部 510中排列多个已装设好开关机构 3的支承板 4, 而在第一动模部 52 的型腔 520中按照键盘布局与定位部 51的收容部 510对应地设置相应多个第 一框架 23和第二框架 25组成的对, 保证多对框架(23 , 25 )与多个支承板 4 在数量、 排列、 位置上的——对应关系; 以及在第二动模部 53的型腔 530中 按照键盘布局与定位部 51的收容部 510对应地设置相应多个同步滑件 21 ,保 证多个同步滑件 21与多个支承板 4在数量、 排列、 位置上的——对应关系; 即可构成整个键盘的组装夹具。
请结合图 1 , 图 4至图 7, 如下以一个键盘为例, 揭示涉及伸缩组件 2部 分的组装工艺, 包括如下步骤:
a. 准备的步驟, 按照键盘布局排列好多个支承板 4, 为每一个支承板 4 装设好开关机构 3的开关膜片 32和弹性件 31 ;
b. 将按键盘布局排列好的支承板组 4置于定位部 51的收容部 510中稳 固收容;
c 按键盘布局将多对框架 (23 , 25 ) 固定在第一动模部 52 的型腔中, 保证第一动模部 52上的多对框架 (23, 25 ) 与定位部 51上的多个支承板 4 间的——十应关系;
d. 移动第一动模部 52至其型腔 520与定位部 51的收容部 510相对应的 位置处, 藉由第一动模部 52的定位引导件 521 , 522套入定位部 51的定位导 入件 511 , 512, 实现型腔 520与收容部 510的精密对应;
e. 第一顶出部 54在指定压力作用下, 驱动其顶针部 540直接作用于第 一动模部 52的型腔 520将所述按键盘布局排列的多对框架(23 , 25 )一次性 顶出至定位部 51的收容部 510上, 由于推力的作用, 每对框架(23, 25 ) 中 的第一框架 23和第二框架 25各自的横梁 231 , 251 两端的枢轴 2310, 2510 在瞬间被套入或嵌入相应支承板 4 上的相应滑动套件 (4110, 4112, 4120, 4122组成的一套, 4210, 4212, 4220 , 4222组成的一套) 中实现装配; f. 按键盘布局将多个同步滑件 21 固定在第二动模部 53的型腔 530中, 保证第二动模部 530上的多个同步滑件 21与定位部 51上的多个支承板 4间 的——对应关系;
g. 用第二动模部 53和第二顶出部 55置入第一动模部 52和第一顶出部 54的位置, 藉由第二动模部 53的定位引导件 531 , 532套入定位部 51的定位 导入件 511 , 512, 实现型腔 530与收容部 510的精密对应;
h. 第二顶出部 55在指定压力作用下, 驱动其顶针部 550直接作用于第 二动模部 53的型腔 530将所述按键盘布局排列的多个同步滑件 21—次性顶 出至定位部 51的收容部 510上, 由于推力的作用, 每个同步滑件 21各自的 底边 212的两活动孔 2121 , 2122在瞬间被套入或嵌入相应支承板 4上的相应 枢转件 431 , 432从而实现装配。
按上述步骤装配后的键盘, 只需进一步以类似的方式将按键盘布局排列 的多个键帽 1与定位部 51上的多个已装在支 板 4上的伸缩组件 2——对应 相装配即可。
根据时间统筹原则, 上述步骤 b和 c可同步执行, 而步驟 f则可在步驟 b 至 e之间的任何时刻前执行完成, 如此即可从整体上大大节约时间。
在上述的整个组装工艺中, 定位部 51是同一的, 但本发明并不排除采用 不同定位部进行组装的可能性。
需要进一步说明的是, 以上仅为本发明的一个较佳实施例, 基于本发明 的权利要求的发明精神, 还可至少对键升降开关装置做出如下适应性改进: 对于第一框架和第二框架与键帽的连接关系, 可以采用在键帽底面设置 枢轴而在框架两臂件外侧设置枢设孔的方式实现; 对于同步滑件的顶边与键 帽连接的方式, 可与其底边与支承板连接的方式互换; 对于同步滑件的具体 形状也可做出适应性的改进; 以及, 在生产工艺足够精密的前提下, 同步滑 件底边与支承板的连接, 可以釆用枢轴与枢孔的方式实现枢设等。 诸如此类, 应是本领域内普通技术人员所应知晓的简单变化。
综上所述, 本发明超脱定势思维, 简化了键升降开关装置的结构, 进而 改进了其组装夹具, 优化了其组装工艺, 使得键盘的生产效率及成品合格率 得以进一步提高。
尽管本发明除揭示最佳实施例外还列举了部分可能的变化实例, 但是毕 竟无法穷举, 因而, 特声明如下:
以上实施例仅用以说明本发明而并非限制本发明所描述的技术方案; 因 此, 尽管本说明书参照上述的各个实施例对本发明已进行了详细的说明, 但 是, 本领域的普通技术人员应当理解, 仍然可以对本发明进行修改或者等同 替换; 而一切不脱离本发明的精神和范围的技术方案及其改进, 其均应涵盖 在本发明的权利要求范围当中。

Claims

权利要求书
1、 一种键升降开关装置, 包括位于支承板上方的键帽、 在键帽受按压或 受回释力进行升或降时, 维持键帽相对于支承板的平衡的伸缩组件、 对应于 所述键帽的升、 降动作闭、 开该键信号的开关机构, 其特征在于, 所述伸缩 组件包括:
互不接触对向设置且形成有空腔的一对框架, 两框架各自的对应底边分 别可滑动设置于支承板两侧预设的两滑动套件中, 而各自的对应顶部则与键 帽底部预设的两枢设套件相枢设;
至少一个用于压制该对框架同步升降的同步滑件, 经过该对框架的空腔 设置, 其一侧被枢设在支承板 /键帽底面上, 另一侧被限定为紧随键帽底面 / 支承板特定区域伸缩活动。
2、 根据权利要求 1所述的键升降开关装置, 其特征在于, 所述伸缩组件 中, 两个框架呈对称结构。
3、 根据权利要求 2所述的键升降开关装置, 其特征在于, 所述伸缩组件 中, 该对框架任意之一呈 U型, 具有一横梁及自该横梁折出的两臂件, 横梁 两端各伸出一枢轴以与所述支承板的一滑动套件相装设; 两臂件的末端, 各 向外侧伸出一枢轴以与所述键帽底面的一枢设套件相枢设。
4、 根据权利要求 3所述的键升降开关装置, 其特征在于, 所述支承板上 的两滑动套件任意之一均包括以对应于所述横梁长度的距离对称分设的两槽 形成件, 每一槽形成件包括一设于支 板表面的勾企和一距离该勾企一定长 度设置的限位块, 该勾企与限位块之间的活动区域定义装设其上的所述框架 横梁的滑动量程。
5、 根据权利要求 4所述的键升降开关装置, 其特征在于, 所述键帽底面 的两枢设套件任意之一均包括以对应于所述两臂件末端的距离对称分设的两 枢设孔 , 相应的框架以其两臂件侧边的两枢轴与该两枢设孔对应装设以便该 框架可枢转。
6、 根据权利要求 5所述的键升降开关装置, 其特征在于, 所述两枢设套 件各自的一个同侧的枢设孔相距设置以保持两相应框架之间的互不接触。
7、根据权利要求 1至 6中任意一项所述的键升降开关装置,其特征在于, 所述同步滑件呈具有通孔的板状。
8、 根据权利要求 7所述的键升降开关装置, 其特征在于, 所述同步滑件 的一侧边被装设于所述键帽底面与基于所述两个框架伸出的至少一个卡件之 间形成的活动区域内以实现同步滑件在该处的细微伸缩旋转, 而另一侧边设 有活动孔, 与该对活动孔相应的支 7 板处设有一对枢转件, 该侧边以其两个 活动孔与该对枢转件相装设实现枢转。
9、 根据权利要求 8所述的键升降开关装置, 其特征在于, 所述支承板上 对应于同步滑件的两活动孔的两枢转件呈勾企状, 所述两活动孔系自同步滑 件的相应边上以贯通形式设置, 两枢转件具有略小于两活动孔的部位以保证 同步滑件绕该边的细 ¾枢转。
10、 根据权利要求 9所述的键升降开关装置, 其特征在于, 所述支承板 上, 所述两枢转件被限定在所述两滑动套件所定义的矩形面积内。
11、 根据权利要求 7所述的键升降开关装置, 其特征在于, 所述开关机 构包括: 开关膜片, 其贴设在支承板上, 并设有供所述伸缩组件活动的通孔; 弹性件, 其穿过所述同步滑件, 一端与所述键帽底面相抵触, 另一端以其内 部的触点与开关膜片的开关触点相对应接触设置, 以在键帽受压时压迫弹性 件的触点抵触开关膜片的开关触点开通该键的信号, 而在弹性件回释时则离 开该开关触点关闭该键的信号。
12、 根据权利要求 10所述的键升降开关装置, 其特征在于, 所述支承板 上的滑动套件和枢转件通过冲切工艺在支承板上一体成型。
13、 一种键盘, 其特征在于, 其至少一个按键釆用如权利要求 1至 12中 任意一项所述的键升降开关装置。
14、 一种组装夹具, 应用于权利要求 1至 12中任意一项所述的键升降开 关装置的伸缩组件的框架的组装工艺中, 其特征在于包括:
定位部, 具有以规定位置容纳至少一个所述支承板的收容部;
第一动模部, 具有与收容在定位部上的至少一个支承板位置相对应的所 述伸缩组件的该对框架的型腔;
第一顶出部, 具有在指定动力作用下, 从所述型腔顶出所述一对框架以 使该对框架与相应的支承板相装配的顶针部。
15、 根据权利要求 14所述的组装夹具, 其特征在于, 所述定位部设有定 位导入件, 所述第一动模部设有定位引导件, 定位部与第一动模部藉由定位 导入件和定位引导件的紧密配合实现精确定位。
16、 根据权利要求 14或 15所述的组装夹具, 其特征在于, 在应用多个 所述键升降开关装置的键盘中, 所述定位部上的多个支承板与第一动模部上 的多对框架在数量、 排列及位置上——对应。
17、 一种组装夹具, 应用于权利要求 1至 12中任意一项所述的键升降开 关装置的伸缩组件的同步滑件的组装工艺中, 其特征在于包括:
定位部, 具有以规定位置容纳至少一个所述支承板的收容部;
第二动模部, 具有与收容在定位部上的至少一个支承板位置相对应的所 述伸缩组件的该对框架的型腔;
第二顶出部, 具有在指定动力作用下, 从所述型腔顶出所述一对框架以 使该对框架与相应的支承板相装配的顶针部。
18、 根据权利要求 17所述的组装夹具, 其特征在于, 所述定位部设有定 位导入件, 所述第二动模部设有定位引导件, 定位部与第二动模部藉由定位 导入件和定位引导件的紧密配合实现精确定位。
19、 根据权利要求 17或 18所述的组装夹具, 其特征在于, 在应用多个 所述键升降开关装置的键盘中, 所述定位部上的多个支承板与第二动模部上 的多对框架在数量、 排列及位置上——对应。
20、 一种键盘中键升降开关装置的伸缩组件的组装工艺, 其特征在于包 括如下步驟:
a. 采用如权利要求 16所述的组装夹具的定位部, 按键盘布局在其收容 部处排列好多个支承板;
b. 采用如权利要求 16所述的组装夹具的第一动模部, 按键盘布局在其 型腔中与步骤 a中的定位部的支承板——对应地排列好多个伸缩组件的框架; c 移动步骤 b的第一动模部至与步驟 a的定位部相对应的位置, 以第一 动模部的定位导入件与该定位部的定位引导件紧密配合实现精确定位;
d. 釆用如权利要求 16所述的组装夹具的顶出部施加指定动力利用其顶 针部顶出所述多对框架与所述多个支承板稳定装配;
e. 采用如权利要求 19所述的组装夹具的定位部, 按键盘布局在其收容 部处排列好多个支承板;
f. 釆用如权利要求 19 所述的组装夹具的第二动模部, 按键盘布局在其 型腔中与步骤 e 中的定位部的支承板——对应地排列好多个伸缩组件的同步 滑件;
g. 移动步骤 f的第二动模部至与步骤 e的定位部相对应的位置, 以第二 动模部的定位导入件与该定位部的定位引导件紧密配合实现精确定位;
h. 采用如权利要求 19所述的组装夹具的顶出部施加指定动力利用其顶 针部顶出所述多对框架与所述多个支承板稳定装配。
21、 根据权利要求 20所述的组装工艺, 其特征在于, 所述步驟 a和步骤 b同时执行, 所述步骤 e和步驟 f同时执行。
22、 根据权利要求 20 所述的组装工艺, 其特征在于, 步驟 a、 b、 c、 d 中所述的定位部与步骤6、 f、 g、 h中所述的定位部分别采用同一部件, 其中 步驟 a和 b同步执行, 而步驟 e由于步驟 d的存在而省略。
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