WO2022161164A1 - 键盘及电子设备 - Google Patents

键盘及电子设备 Download PDF

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Publication number
WO2022161164A1
WO2022161164A1 PCT/CN2022/071514 CN2022071514W WO2022161164A1 WO 2022161164 A1 WO2022161164 A1 WO 2022161164A1 CN 2022071514 W CN2022071514 W CN 2022071514W WO 2022161164 A1 WO2022161164 A1 WO 2022161164A1
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WO
WIPO (PCT)
Prior art keywords
frame
keyboard
glue
longitudinal
lateral
Prior art date
Application number
PCT/CN2022/071514
Other languages
English (en)
French (fr)
Inventor
吕静
金德浩
吴伟杰
叶斌
黄思鑫
左后秀
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP22745042.6A priority Critical patent/EP4266149A4/en
Publication of WO2022161164A1 publication Critical patent/WO2022161164A1/zh
Priority to US18/361,337 priority patent/US20230367373A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1662—Details related to the integrated keyboard
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
    • G06F1/1616—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/0202—Constructional details or processes of manufacture of the input device

Definitions

  • the present application relates to the technical field of keyboards, and in particular, to a keyboard and an electronic device.
  • Laptops are more and more popular among consumers due to their advantages of small size, light weight and good portability.
  • notebooks are mainly composed of shells, keyboards, motherboards, fans, batteries, etc., and the keyboards are attached to the whole machine by hot-melting or screw locking of the keyboard frame attached to the shell.
  • the keyboard frame can be fixed on the casing by adhesive or dispensing.
  • the keyboard frame is attached with the adhesive, there is a problem of opening the glue and the reliability is poor; a more reliable dispensing solution is adopted.
  • the glue overflows there may be a serious glue overflow problem, that is, glue overflows to the surface of the structural parts, which requires the staff to spend a lot of time and energy on glue removal.
  • the embodiments of the present application provide a keyboard and an electronic device, which can reduce the risk of glue overflow while satisfying the reliability of the keyboard.
  • an embodiment of the present application provides a keyboard, including: a key switch, a keyboard frame connected by dispensing glue, and a structural member; the keyboard frame includes a horizontal frame and a vertical frame, the horizontal frame extends in a row direction and is continuously arranged, and the vertical frame is arranged in a column.
  • the structural member includes a horizontal support rib and the longitudinal support rib, the transverse support rib and the longitudinal support rib intersect to define a second button accommodating hole, the first button accommodating hole and the second button accommodating hole are correspondingly arranged, and are jointly used for accommodating the button switch;
  • the longitudinal frame protrudes from the lateral frame, the longitudinal frame and the lateral support ribs are in contact and fit, and a glue storage gap for accommodating glue is formed between the lateral frame and the lateral support ribs.
  • the gap between the horizontal frame and the vertical frame on the keyboard frame is used to make the vertical frame and the structural member fit together as a support, and the gap between the horizontal frame and the structural member forms a hidden glue structure, which can increase the The large volume of glue can meet the pulling force of the keyboard frame while reducing the risk of glue spillage, thereby reducing the manpower for glue removal in the production line.
  • the keyboard frame further includes an outer ring frame, the horizontal frame and the longitudinal frame are connected in the outer ring frame, and the structural member further includes an outer ring support rib, and the lateral support rib and the longitudinal support rib are connected in the outer ring support rib , on the side of the keyboard frame connected to the structural member, the longitudinal frame is protruded relative to the outer ring frame, and the outer ring frame and the outer ring support rib form a glue storage gap for accommodating glue.
  • a gap for accommodating glue is formed between the outer ring frame and the outer ring supporting rib, which can further increase the volume of the glue to further increase the size of the keyboard frame.
  • the pull-out force further reduces the risk of glue spillage.
  • the end face of the longitudinal frame relative to the protruding portion of the lateral frame is flush with the edge of the lateral frame, and the surfaces of the lateral frame used to form the glue storage gap are on the same plane and have the same width.
  • the glue located in the gap between the horizontal frame and the structural parts is in an overall conduction state in the length direction, so that the glue with a certain fluidity can be distributed more evenly in the glue storage structure, which can reduce the risk of glue overflow to a certain extent.
  • the dispensing mechanism dispenses glue on the lateral support ribs, it continues to dispense glue along one direction, which is beneficial to improve the dispensing efficiency and dispensing uniformity.
  • the protruding height of the longitudinal frame relative to the lateral frame is in the range of 0.05mm-0.15mm.
  • the width of the lateral support rib is greater than the width of the lateral frame, and the width of the longitudinal support rib is greater than the width of the longitudinal frame.
  • the structural member can play the role of shielding the keyboard frame, which is beneficial to prevent the user from observing the internal keyboard frame through the gap between the key switch and the first key accommodating hole, thereby improving the appearance aesthetics;
  • the overflowed glue can adhere to the edge of the lower surface of the lateral support rib without overflowing and flow along the side wall of the lateral support rib to the upper surface of the lateral support rib. , thus eliminating the need for manual cleaning.
  • the widths of the horizontal frame and the vertical frame are equal.
  • This arrangement is beneficial to processing and to the positioning of the keyboard frame and the structural parts during pressing, and can largely avoid the occurrence of pressing offset, thereby improving the assembly accuracy of the keyboard frame and the structural parts.
  • the widths of the horizontal frame and the vertical frame are in the range of 1 mm-1.5 mm.
  • the keyboard frame is a plastic part, and the structural part is a metal part.
  • the structural part may be an aluminum part or an aluminum alloy part, so as to enhance the overall structural strength of the keyboard and at the same time provide a glossy appearance as an appearance part.
  • Another aspect of the embodiments of the present application provides an electronic device, including the above keyboard.
  • the electronic device can include a notebook computer, a tablet computer, a desktop computer, a virtual reality device, a vehicle-mounted device, etc.
  • the keyboard can be an independent keyboard or integrated in the electronic device. device casing.
  • the electronic device is a notebook computer
  • the notebook computer includes a first body and a second body connected by a rotating shaft, the first body is provided with a display screen, and the second body is provided with a keyboard and a touchpad,
  • the structural component of the keyboard is the shell of the second body facing the first body.
  • the gap between the horizontal frame and the vertical frame on the keyboard frame is used to make the vertical frame and the structural member fit together as a support, and the gap between the horizontal frame and the structural member forms a glue hiding structure , which can increase the volume of glue, and reduce the risk of glue overflow while meeting the pulling force of the keyboard frame, thereby reducing the manpower for cleaning the production line, thereby reducing the overall production cost of electronic equipment and improving production efficiency.
  • FIG. 1 is a schematic structural diagram of a notebook computer provided by an embodiment of the present application.
  • Fig. 2 is the partial cross-sectional schematic diagram of the keyboard provided by the related art
  • FIG. 3 is a partial cross-sectional schematic diagram of a keyboard provided by another related art
  • FIG. 4 is a schematic structural diagram of a keyboard frame provided by an embodiment of the present application.
  • Fig. 5 is the enlarged schematic diagram of A place in Fig. 4;
  • Fig. 6 is the perspective view corresponding to B in Fig. 5;
  • Fig. 7 is a sectional view corresponding to C-C' in Fig. 5;
  • FIG. 8 is a schematic structural diagram of a structural member provided by an embodiment of the present application.
  • Fig. 9 is the enlarged schematic diagram of D place in Fig. 8.
  • FIG. 10 is a partial cross-sectional schematic diagram of a keyboard frame and a structural component provided by an embodiment of the application after being assembled;
  • Fig. 11 is the enlarged schematic diagram at E in Fig. 10;
  • FIG. 12 is a schematic diagram of an area for storing glue on a keyboard frame according to an embodiment of the application.
  • FIG. 13 is a schematic diagram of glue dispensing on a structural member provided by an embodiment of the application.
  • FIG. 14 is a schematic diagram of points taken for a pull-out force test on a keyboard frame according to an embodiment of the present application.
  • 100-notebook computer 11-first body; 111-display screen; 12-second body; 121-touchpad; 122-camera; 200-keyboard; 20-key switch; 21-keyboard frame; 210-outer ring frame ; 211-horizontal frame; 212-longitudinal frame; 213-first button housing hole; 214-end face; 22-structural part; 220-outer ring support rib; 221-horizontal support rib; 222-longitudinal support rib; 223- The second button accommodating hole.
  • FIG. 1 is a schematic structural diagram of a notebook computer according to an embodiment of the present application.
  • a notebook computer 100 which includes a first body 11 and a second body 12 .
  • the first body 11 may be provided with components such as a display screen 111
  • the second body 12 may be provided with a keyboard 200 .
  • the first main body 11 and the second main body 12 can be connected by rotating shafts, hinges and other devices, so that the first main body 11 and the second main body 12 can rotate relative to each other, which is convenient for users to adjust the opening angle of the notebook computer.
  • Figure 1 shows the first main body 11 and the second main body 12. A schematic diagram of the second body 12 rotated to the unfolded state. When the first body 11 and the second body 12 are rotated to fit each other, the notebook computer 100 is reduced in size, which is convenient for storage and portability.
  • the user can interact with the notebook computer 100 by tapping the keyboard 200.
  • the keyboard 200 occupies most of the space of the second main body 12. As the main input device, the structural reliability and assembly accuracy of the keyboard 200 affect the overall notebook computer 100. performance has a greater impact.
  • the keyboard 200 may include a plurality of key switches 20 arranged in an array, and the plurality of key switches 20 correspond to different inputs, such as 26 English letters, 10 Arabic numerals, start, space, carriage return, switch, delete, etc.
  • a key switch 20 is connected to the main board, and a user taps the key switch 20 to realize various input functions.
  • the camera 122 can be integrated on a key in the keyboard 200 to realize the camera function as a lift-type camera.
  • the keyboard 200 can also include a keyboard frame, which can be fixed to the second body 12 by means of thermal fusion or screw locking.
  • the keyboard frame is provided with a plurality of key accommodating holes to accommodate a plurality of key switches 20 without interfering with the keys. The downward movement and rebound of the switch 20.
  • the keyboard frame can be fixed on the structural member by way of adhesive backing or dispensing, and the structural member can be a part of the shell of the second body 12 .
  • FIG. 2 is a partial cross-sectional schematic diagram of a keyboard provided by the related art.
  • the narrow edge is provided with an arc-shaped glue overflow groove 2101 , and the arc-shaped glue overflow groove 2101 is located in the The side of the keyboard frame 21 that is attached to the structural member 22 .
  • the keyboard frame 21 is attached to the structural member 22 under the action of the pressing jig, and the glue can be limited in the arc-shaped glue overflow groove 2101.
  • the glue overflow space is increased, which can reduce the overflow of glue amount.
  • the arc-shaped glue overflow groove 2101 can increase the glue capacity to a certain extent, improve the reliability of bonding, and can reduce the amount of glue to a certain extent. Glue spilled.
  • the keyboard frame 21 and the structural member 22 are pressed together, and the width of the narrow side of the keyboard frame 21 is limited, and the space of the curved glue overflow groove 2101 is limited, so that the keyboard frame 21 still has a high proportion of The problem of glue overflow requires manual cleaning.
  • FIG. 3 is a partial cross-sectional schematic diagram of a keyboard provided by another related art.
  • the narrow edge is provided with a rubber retaining wall 2102 , and each side of the narrow edge is provided with a narrow edge.
  • a glue retaining wall 2102, the glue retaining walls 2102 on both sides and the narrow side form a U-shaped groove.
  • the glue overflow space of the U-shaped groove formed by the glue retaining wall 2102 is larger, so the glue overflow can be further reduced.
  • the narrow side of the keyboard frame 21 itself is small in size, and the rubber retaining wall 2102 is extremely narrow, burrs are likely to be generated during molding, and the problem of unreliable bonding due to insufficient glue filling may occur.
  • the reasons for this phenomenon may include: the amount of glue filling will affect the reliability of the keyboard frame and structural parts, so in order to ensure the reliability between the keyboard frame and the structural parts, the amount of glue filling needs to reach a certain amount, often More than can be accommodated in the glue-filled areas in Figures 2 and 3, in this case, will result in glue spillage.
  • the embodiment of the present application provides a keyboard and an electronic device, which utilizes the difference between the horizontal frame and the vertical frame on the keyboard frame to make the vertical frame and the structural member fit together as a support, and the gap between the horizontal frame and the structural member is used as a support.
  • the gaps form a glue-holding structure, which can increase the volume of glue, which can meet the pulling force of the keyboard frame and reduce the risk of glue spillage, thereby reducing the manpower for glue removal in the production line.
  • FIG. 4 is a schematic structural diagram of a keyboard frame provided by an embodiment of the present application
  • FIG. 5 is an enlarged schematic diagram of part A in FIG. 4 . 4 to 6
  • the keyboard frame 21 provided by the embodiment of the present application may include an outer frame 210, a horizontal frame 211 and a vertical frame 212 arranged in the outer frame 210, and the horizontal frame 211 is along the X direction shown in the figure That is, the length direction of the keyboard 200 extends, the longitudinal frame 212 extends along the Y direction as shown in the figure, that is, the width direction of the keyboard 200 , and the lateral frame 211 and the vertical frame 212 are crossed to define a plurality of first keys for accommodating the key switch 20 accommodating hole 213 .
  • the size of the multiple key switches 20 of the keyboard 200 is different, and considering the input speed and other factors, the multiple key switches 20 can be aligned in the row direction, and can be non-aligned in the column direction. It is the structural characteristic of the keyboard 200 itself.
  • the horizontal frame 211 is connected between the left frame and the right frame of the outer ring frame 210 , and each horizontal frame 211 is arranged continuously, and a plurality of horizontal frames 211 are arranged in parallel to connect the keyboard frame 21 as a whole. into several lines.
  • the longitudinal frame 212 is connected between two adjacent rows of lateral frames 211, or between the upper frame of the outer frame 210 and the adjacent lateral frame 211, or between the lower frame of the outer frame 210 and the adjacent lateral frame 211.
  • a plurality of longitudinal frames 212 are arranged in parallel, but the longitudinal frames 212 of two adjacent rows may be arranged in a non-aligned manner, and are arranged in a staggered manner.
  • the first key accommodating holes 213 are aligned in a row in the transverse direction, and may be arranged in a staggered manner in the longitudinal direction.
  • Fig. 6 is a perspective view corresponding to B in Fig. 5
  • Fig. 7 is a cross-sectional view corresponding to C-C' in Fig. 5 . 6 and 7
  • the surface of the horizontal frame 211 is on the same horizontal plane
  • the surface of the vertical frame 212 protrudes from the horizontal frame 211
  • the end surface 214 of the protruding part is flush with the edge of the horizontal frame 211 .
  • the longitudinal frame 212 can also be protruded from the outer ring frame 210
  • the end face of the protruding part on the side close to the outer ring frame 210 is flush with the edge of the outer ring frame 210 .
  • at least a part of the surface of the outer frame 210 and the surface of the lateral frame 211 may be on the same horizontal plane.
  • the thickness h1 of the horizontal frame 211 is smaller than the thickness h2 of the vertical frame 212 , and the height of the protruding portion of the vertical frame 212 relative to the horizontal frame 211 is ⁇ h, that is, the height of the end surface 214 .
  • the thickness h1 of the horizontal frame may be in the range of 0.5-0.7mm, for example, 0.6mm
  • the thickness of the longitudinal frame 212 may be in the range of 0.6mm-0.8mm, for example, it may be 0.7 mm mm
  • ⁇ h can be in the range of 0.05mm-0.15mm, for example, it can be set to 0.1mm.
  • FIG. 8 is a schematic structural diagram of a structural member provided by an embodiment of the present application
  • FIG. 9 is an enlarged schematic diagram of the position D in FIG. 8
  • the structural member 22 provided in this embodiment of the present application may include outer ring support ribs 220 , and transverse support ribs 221 and longitudinal support ribs 222 disposed in the outer ring support ribs 220 .
  • the longitudinal support rib 222 extends along the Y direction as shown in the figure, that is, the width direction of the keyboard 200.
  • the transverse support rib 221 and the longitudinal support rib 222 are arranged crosswise and are arranged in dislocations, so as to define many a second key accommodating hole 213 for accommodating the key switch 20 .
  • the structural member 22 is connected to the keyboard frame 21, wherein the outer ring frame 210 and the outer ring support ribs 220 are correspondingly connected, the horizontal frame 211 and the horizontal support ribs 221 are correspondingly connected, the longitudinal frame 212 and the vertical support ribs 222 are correspondingly connected, and the first key is accommodated.
  • the hole 213 and the second button accommodating hole 223 are correspondingly provided, and are used for accommodating the button switch 20 together.
  • the structural member 22 can be used as the upper surface shell of the second main body 12 of the notebook computer 100 . It should be noted that FIG. 8 shows the structure of the structural member 22 corresponding to the keyboard frame 21 , which can be a Part of the upper shell.
  • the structural member 22 can be made of metal such as aluminum, aluminum-magnesium alloy, etc., so as to strengthen the overall structural strength of the keyboard 200, and at the same time provide a glossy appearance.
  • first button accommodating hole 213 and the second button accommodating hole 223 may be rounded rectangles, that is, the connection between the horizontal frame 211 and the vertical frame 212 is rounded, and the connection between the horizontal support rib 221 and the vertical support rib 222
  • the corners are rounded to avoid stress concentration at the junction of the horizontal frame 211 and the vertical frame 212, the junction of the lateral support rib 221 and the junction of the vertical support rib 222, thereby helping to improve the overall structural strength and appearance of the keyboard 200.
  • Aesthetics The size of the rounded corners of the rounded rectangle is not specifically limited in the embodiments of the present application.
  • FIG. 10 is a partial cross-sectional schematic diagram of a keyboard frame and a structural component provided by an embodiment of the application after assembling
  • FIG. 11 is an enlarged schematic diagram of the position E in FIG. 10 . 10 and 11, it is defined that the structural member 22 is on the top and the keyboard frame 21 is on the bottom.
  • the upper surface of the keyboard frame 21 (the surface shown in FIG. 4) and the lower surface of the structural member 22 (the surface shown in FIG. 8) pass through AB glue connection.
  • AB glue is a two-component acrylate structural adhesive, including A component and B component mixed in a ratio of 10:1,
  • a component includes acrylate monomer, toughening agent, reducing agent, stabilizer, rheological aid Agents, etc., B component peroxides, plasticizers, rheology additives, etc.
  • a glue storage gap 300 may be formed between the support ribs 221 .
  • a glue storage gap may also be formed between the outer ring frame 210 and the outer ring support rib 220 .
  • the solution of the embodiment of the present application breaks the conventional thinking that shielding parts should be installed on both sides of the glue filling area, and cancels the shielding parts, and uses the step difference between the lateral frame 211 and the lateral support ribs 221 to form a glue storage gap. Since the shielding is removed The design of the components increases the glue storage gap, which can reduce or avoid the risk of glue overflow caused by insufficient glue storage space when the keyboard frame is pressed to the structural frame.
  • the assembly process of the keyboard frame 21 and the structural member 22 can be as follows: first, the structural member 22 is fixed on the jig, and glue is uniformly dispensed on the outer ring support rib 220 and the lateral support rib 221 of the structural member 22 by a glue dispenser; After the glue dispensing is completed, measure the glue weight and check whether there is any glue breakage, so that the glue dispensing state meets the standard; The AB glue is evenly distributed in the glue storage gap 300 formed between the outer ring frame 210 and the outer ring support ribs 220 and between the lateral frame 211 and the lateral support ribs 221, and the structural member 22 and the keyboard frame 21 are completely bonded.
  • FIG. 12 is a schematic diagram of an area for storing glue on a keyboard frame according to an embodiment of the present application, wherein the black filled area is the area covered by AB glue.
  • a glue storage gap 300 can be formed between the lateral frame 211 and the lateral support ribs 221, and a glue storage gap can also be formed between the outer ring frame 210 and the outer ring support ribs 220.
  • the maximum glue storage gap on the keyboard frame 21 The area is as shown in FIG. 12 , the AB glue can cover the entire area of the outer frame 210 and the horizontal frame 211 on the keyboard frame 21 .
  • the outer frame 210 refers to the main frame surrounding the horizontal frame 211 and the vertical frame 212, which includes an upper frame, a right frame, a lower frame and a left frame which are connected in sequence.
  • the outer sides of the left frame and the right frame can be provided with lifting ears, which are used to connect the keyboard frame 21 with the structures such as the speakers on both sides thereof. Rational line structure. It is not difficult to understand that the maximum coverage of the AB glue includes the main frame of the outer ring frame 210 , but may not include the lifting lug, the mounting table, and the cable management structure.
  • FIG. 13 is a schematic diagram of glue dispensing on a structural member provided by an embodiment of the application, and the dark thick lines covering the lateral support ribs and the outer ring support ribs in the figure are AB glue.
  • the width of the glue dispensing is smaller than the width of the lateral support rib and the outer ring support rib, and the AB glue is located in the middle of the lateral support rib, and the keyboard frame 21 and After the structural parts 22 are pressed together, the proportion of AB glue overflowing is greatly reduced.
  • the vertical frame 212 protruding from the horizontal frame 211 is formed. It can be closely attached to the structural member 22 as a support, and the gap between the horizontal frame 211 and the structural member 22 forms a glue storage structure. In theory, the glue storage space can be increased, the bonding strength can be improved, and the risk of glue overflow can be reduced.
  • both sides of the lateral frame 211 are open structures, no glue overflow groove or glue retaining wall is provided, and the lateral frame 211 is not provided.
  • the gap between 211 and the lateral support rib 221 is used as a glue storage structure, and the volume of the glue storage structure is larger. Under the same glue amount, the solution provided by the embodiment of the present application greatly reduces the proportion of glue overflowing.
  • the maximum glue storage amount of the glue storage structure depends on the coverage area of the AB glue on the keyboard frame 21 and the height of the glue storage gap 200 , and the coverage area of the AB glue on the keyboard frame 21 is equal to the horizontal frame 211 .
  • the length multiplied by the width, plus the area of the outer frame 210 , the height of the glue-holding gap 300 is the difference ⁇ h between the horizontal frame 211 and the vertical frame 212 .
  • the above values can be fine-tuned to control the maximum amount of glue stored in the glue storage structure of the keyboard 200 , so that the pullout force test of the keyboard frame 21 meets the preset pullout force standard.
  • the AB glue can be evenly and completely hidden in the glue storage structure. , thereby further reducing the risk of glue spillage.
  • the overall length of the keyboard frame 21 may be in the range of 260mm-300mm, for example, 282mm; the overall width of the keyboard frame 21 may be in the range of 100mm-120mm, for example, 112mm.
  • the weight of the glue dispensed between the keyboard frame 21 and the structural member 22 may be in the range of 0.205-0.403 g.
  • the width a1 of the lateral frame 211 may be between 1 mm and 1.5 mm, for example, may be 1.25 mm.
  • the width a2 of the longitudinal frame 212 may be between 1 mm and 1.5 mm, for example, may be 1.25 mm.
  • the width a3 of the longitudinal frame 212 located between the upper frame of the outer ring frame 210 and the adjacent lateral frame 211 may be between 1 mm and 1.6 mm, for example, may be 1.46 mm.
  • the distance b1 between the two adjacent horizontal frames 211 may be between 16mm-20mm, for example, it may be 17.80mm; the distance b2 between the two adjacent longitudinal frames 212 may be between 16mm-20mm, for example, it may be is 17.80mm; the distance b3 between the upper frame of the outer ring frame 210 and the adjacent lateral frame 211 is smaller than b1, and may be between 9mm-12mm, for example, may be 10.14mm.
  • the width of the outer ring frame 210 is not less than the width of the lateral frame 211 , and may be in the range of 1 mm-1.5 mm.
  • the fillet size of the first key accommodating hole 213 may be between 2 mm and 3 mm, for example, may be set to 2.30 mm.
  • the thickness h3 of the lateral support rib 221 may be in the range of 0.7-0.9 mm, for example, 0.8 mm.
  • the height of the glue storage gap 300 that is, the protruding height ⁇ h of the vertical frame 212 relative to the horizontal frame 211 , may be in the range of 0.05mm-0.15mm, for example, may be set to 0.1mm.
  • FIG. 14 is a schematic diagram of points taken for a pull-out force test on a keyboard frame according to an embodiment of the present application.
  • the pull-out force test standard that each point on the keyboard frame 21 needs to meet is 5Kg
  • the pull-out force test points P1-P10, P1- P10 can be distributed in a number of typical positions such as the four corners, the middle, and the middle of the outer ring of the keyboard frame 21 or weak positions with less glue in theory. volume.
  • Table 1 In the actual pull-out force test, different batches of products were tested, and the test results are shown in Table 1.
  • the solution provided by the embodiment of the present application is adopted, and the gap between the horizontal frame 211 and the structural member 22 is formed by utilizing the difference between the horizontal frame 211 and the vertical frame 212 on the keyboard frame 21 to form a hidden glue.
  • the structure can meet the pull-out force test standard of the keyboard frame 21 , that is, meet the bonding reliability requirements of the keyboard 200 .
  • the width a1 of the horizontal frame 211 and the width a2 of the vertical frame 212 may be the same, so that the distance between the two adjacent first key accommodating holes 213 in the lateral direction and the longitudinal direction is the same. The distance is the same, which is conducive to processing.
  • the width a1 of the horizontal frame 211 may be greater than the width a2 of the vertical frame 212 , and the widening of the horizontal frame 211 is beneficial to increase the volume of glue stored at the horizontal frame 211 .
  • the difference between the width a1 of the horizontal frame 211 and the width a2 of the vertical frame 212 is not greater than 0.2 mm.
  • the width of the lateral support ribs 221 may be slightly larger than the width of the lateral frame 211, and the width of the longitudinal support ribs 222 may be slightly larger than the width of the longitudinal frame 212.
  • the second button The area of the accommodating hole 223 is smaller than that of the first button accommodating hole 213 .
  • the difference between the width of the lateral support rib 221 and the width of the lateral frame 211 is not greater than 0.2 mm
  • the difference between the width of the longitudinal support rib 222 and the width of the longitudinal frame 212 is not greater than 0.2 mm.
  • the structural member 22 can play a role of shielding the keyboard frame 21, which is beneficial to prevent the user from observing the internal keyboard frame 21 through the gap between the key switch 20 and the first key accommodating hole 213, thereby improving the appearance.
  • the overflowed AB glue can adhere to the edge of the lower surface of the lateral support rib 221 , and will not overflow and follow the direction of the lateral support rib 221 .
  • the side walls flow to the upper surface of the lateral support ribs 221 .
  • the width of the lateral support ribs 221 may be the same as the width of the lateral frame 211, and the width of the longitudinal support ribs 222 may be the same as the width of the longitudinal frame 212.
  • the first button accommodating hole 213 The area is equal to that of the second button accommodating hole 223 .
  • the vertical frame 212 is used as a support, and the gap between the horizontal frame 211 and the structural member 22 is used as a hidden glue structure.
  • 211 extends continuously and directly connects the opposite left frame and right frame of the outer ring frame 210. Therefore, the AB glue located in the gap between the lateral frame 211 and the structural member 22 is in an overall conduction state in the length direction, so that it has a certain The fluid AB glue can be distributed more evenly in the glue storage structure, which can reduce the risk of glue overflow to a certain extent.
  • the glue dispensing mechanism dispenses glue on the lateral support ribs 221, it continuously dispenses glue along one direction, which is beneficial to improve glue dispensing efficiency and glue dispensing uniformity.
  • the vertical frame 212 can play a positioning role in addition to a supporting role.
  • the multi-segment longitudinal frame 212 is aligned with the longitudinal support ribs 222 and then pressed together, which is beneficial to improve the alignment accuracy of the keyboard frame 21 and the structural member 22, so as to avoid the misalignment caused by pressing. Glue overflow, low assembly accuracy, key switch stuck and other phenomena.
  • the horizontal frame 211 can also be set to protrude relative to the vertical frame 212 and the outer frame 210, so that the horizontal frame 211 and the structural member 22 are closely attached as a support , and the gap between the longitudinal frame 212 and the structural member 22 forms a glue-holding structure.
  • part of the horizontal frame 211 and/or part of the longitudinal frame 212 may be arranged to protrude relative to the outer frame 210 , so that the protruding part is closely attached to the structural member 22 as a support, and the part that is flush with the outer frame 210
  • the gap with the structural member 22 forms a glue-holding structure.
  • the keyboard frame 21 can also be set to other structures.
  • the horizontal borders 211 are arranged in a row direction, and the vertical borders 212 are dislocated in the column direction, that is, the horizontal borders 211 and the vertical borders 212 are arranged discontinuously.
  • the horizontal borders 211 are staggered in the row direction, and the vertical borders 212 are aligned in the column direction, that is, the horizontal borders 211 are arranged discontinuously and the vertical borders 212 are continuously arranged.
  • the horizontal borders 211 are aligned in the row direction, and the vertical borders 212 are aligned in the column direction.
  • the surfaces on both sides of the keyboard frame 21 can be set to be flush, and there is a gap between the lateral support ribs 221 and the longitudinal support ribs 222 of the structural member 22.
  • the fracture difference of the support rib 222 is used as the glue storage structure.
  • the keyboard 200 provided in this embodiment of the present application can be applied to the notebook computer 100 shown in FIG. 1 .
  • the structural member 22 can be used as the upper surface of the second main body 12 of the notebook computer 100
  • the keyboard frame 21 is attached to the structural member. 22, and can also be fixedly connected to the second body 12 by means of heat fusion or screw locking. Because the keyboard 200 utilizes the gap between the horizontal frame 211 and the vertical frame 212 of the keyboard frame 21 as a special glue-holding structure, the risk of glue spillage, the difficulty of glue removal and the glue removal can be reduced under the premise of satisfying the pulling force. Therefore, the overall production cost of the notebook computer 100 can be reduced, and the production efficiency can be improved.
  • the keyboard 200 provided in this embodiment of the present application can be applied to other electronic devices, such as tablet computers, desktop computers, virtual reality devices, and in-vehicle devices, in addition to the notebook computer 100 .
  • the keyboard 200 can be an independent keyboard or integrated in the electronic device.
  • the structural member 22 of the keyboard 200 can be directly used as a shell of the keyboard or a shell of the electronic device.
  • the specific structure of the keyboard 200 can also have other deformations, such as the arrangement of the key switches 20, which can be aligned horizontally and vertically, or both horizontally and vertically staggered. As the solution of the glue-holding structure, the fault difference should fall within the protection scope of this application.
  • the solution provided by the embodiments of the present application using the difference between the transverse frame and the longitudinal frame as the glue-holding structure is suitable for the bonding of narrow-side structures, for example, for the bonding between narrow-side structures with a width of less than 2 mm.
  • the bonding reliability is poor, and the risk of glue overflow is still high.
  • using the fracture difference as a special glue storage structure, as analyzed above has a good effect of increasing the amount of glue storage and avoiding the risk of glue overflow, and is suitable for bonding between narrow-sided structures.
  • the gap between the horizontal narrow side and the vertical narrow side as the glue storage structure, it can be applied to devices such as backlight modules with arrayed lamp beads, phones with arrayed buttons, etc. It is regarded as a simple modification on the basis of the technical solutions described in the embodiments of the present application.

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Abstract

本申请实施例提供一种键盘及电子设备，键盘包括：按键开关、键盘框和结构件；键盘框包括横向边框和纵向边框，横向边框在行方向上延伸并连续设置，纵向边框在列方向上延伸并连接在相邻的两个横向边框之间，多个纵向边框在列方向上呈错位排布；结构件包括横向支撑筋和纵向支撑筋，在键盘框的与结构件连接的一侧，纵向边框相对于横向边框凸出设置，纵向边框和横向支撑筋抵触贴合，横向边框和横向支撑筋之间构成用来容纳胶水的藏胶间隙。本申请实施例提供一种键盘及电子设备，可以在满足键盘的可靠性的同时降低溢胶风险。

Description

键盘及电子设备
本申请要求于2021年01月30日提交中国专利局、申请号为202110131841.6、申请名称为“键盘及电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及键盘技术领域，尤其涉及一种键盘及电子设备。
背景技术
笔记本电脑因具备体积小，重量轻，便携性好等优点，越来越受到消费者的喜爱。在笔记本电脑生产制造中，笔记本主要由外壳、键盘、主板，风扇、电池等堆叠而成，其中键盘是通过贴附在外壳上的键盘框热熔或螺钉锁附在整机上。
相关技术中，键盘框可以通过背胶或点胶的方式固定在外壳上，采用背胶贴附键盘框时，存在一定比例的开胶问题，可靠性差；采用可靠性更高的点胶贴附方案时，则可能存在严重的溢胶问题，即胶溢到结构件的表面，需要工作人员耗费较多时间和精力进行清胶工作。
发明内容
本申请实施例提供一种键盘及电子设备，可以在满足键盘的可靠性的同时降低溢胶风险。
本申请实施例一方面提供一种键盘，包括：按键开关、通过点胶连接的键盘框和结构件；键盘框包括横向边框和纵向边框，横向边框在行方向上延伸并连续设置，纵向边框在列方向上延伸并连接在相邻的两个横向边框之间，多个纵向边框在列方向上呈错位排布，横向边框和纵向边框交叉限定出第一按键容置孔；结构件包括横向支撑筋和纵向支撑筋，横向支撑筋和纵向支撑筋交叉限定出第二按键容置孔，第一按键容置孔和第二按键容置孔对应设置，共同用来容置按键开关；在键盘框的与结构件连接的一侧，纵向边框相对于横向边框凸出设置，纵向边框和横向支撑筋抵触贴合，横向边框和横向支撑筋之间构成用来容纳胶的藏胶间隙。
本申请实施例提供的键盘，利用键盘框上的横向边框和纵向边框的断差，使纵向边框和结构件贴合以作为支撑，横向边框和结构件之间的空隙形成藏胶结构，可以增大容胶体积，在满足键盘框的拉拔力的同时，降低溢胶风险，从而减少产线清胶人力。
在一种可能的实施方式中，键盘框还包括外圈边框，横向边框和纵向边框连接在外圈边框内，结构件还包括外圈支撑筋，横向支撑筋和纵向支撑筋连接在外圈支撑筋内，在键盘框的与结构件连接的一侧，纵向边框相对于外圈边框凸出设置，外圈边框和外圈支撑筋之间构成用来容纳胶的藏胶间隙。
通过设置外圈边框和纵向支撑筋之间存在断差，使外圈边框和外圈支撑筋之间构成用 来容纳胶的藏胶间隙，可以进一步增大容胶体积，以进一步增大键盘框的拉拔力，进一步降低溢胶风险。
在一种可能的实施方式中，纵向边框相对于横向边框凸出部分的端面与横向边框的边沿平齐，横向边框的用来构成藏胶间隙的表面处于同一平面且宽度一致。
位于横向边框和结构件间隙内的胶，在长度方向上呈整体导通状态，从而，具有一定的流动性的胶可以在藏胶结构内分布的更加均匀，在一定程度上可以降低溢胶风险。另外，点胶机构在横向支撑筋上点胶时，沿着一个方向持续点胶，有利于提高点胶效率和点胶均匀性。
在一种可能的实施方式中，纵向边框相对于横向边框凸出的高度处于0.05mm-0.15mm的范围内。
在一种可能的实施方式中，横向支撑筋的宽度大于横向边框的宽度，纵向支撑筋的宽度大于纵向边框的宽度。
这样设置，一方面，结构件可以起到对键盘框的遮蔽作用，有利于防止用户透过按键开关和第一按键容置孔的缝隙观察到内部的键盘框，从而提高外观美观性；另一方面，假使胶溢出至横向边框的两侧，则溢出的胶可以沾附在横向支撑筋的下表面的边缘，而不会溢出并沿着横向支撑筋的侧壁流动至横向支撑筋的上表面，因而可以无需人工清胶。
在一种可能的实施方式中，横向边框和纵向边框的宽度相等。
这样设置，有利于加工，有利于键盘框和结构件在压合时的定位，可以很大程度上避免压合偏位的发生，从而提高键盘框和结构件的装配精度。
在一种可能的实施方式中，横向边框和纵向边框的宽度处于1mm-1.5mm的范围内。
在一种可能的实施方式中，键盘框为塑胶件，结构件为金属件。
结构件可以为铝件或铝合金件，以在增强键盘整体的结构强度的同时，作为外观件提供光泽的外观。
本申请实施例另一方面提供一种电子设备，包括如上的键盘。
该电子设备可以包括笔记本电脑、平板电脑、台式电脑、虚拟现实设备、车载装置等，键盘可以为独立的键盘或者集成在电子设备中，此时，键盘的结构件可以直接作为键盘的外壳或电子设备的外壳。
在一种可能的实施方式中，电子设备为笔记本电脑，笔记本电脑包括通过转轴连接的第一主体和第二主体，第一主体上设置有显示屏，第二主体上设置有键盘和触摸板，键盘的结构件为第二主体的面向第一主体的外壳。
本申请实施例提供的键盘和电子设备，利用键盘框上的横向边框和纵向边框的断差，使纵向边框和结构件贴合以作为支撑，横向边框和结构件之间的空隙形成藏胶结构，可以增大容胶体积，在满足键盘框的拉拔力的同时，降低溢胶风险，从而减少产线清胶人力，从而可以降低电子设备整体的生产成本，提高生产效率。
附图说明
图1为本申请实施例提供的笔记本电脑的结构示意图；
图2为相关技术提供的键盘的局部断面示意图；
图3为另一种相关技术提供的键盘的局部断面示意图；
图4为本申请实施例提供的键盘框的结构示意图；
图5为图4中A处的放大示意图；
图6为图5中B处对应的立体图；
图7为图5中C-C’对应的剖面图；
图8为本申请一实施例提供的结构件的结构示意图；
图9为图8中D处的放大示意图；
图10为本申请一实施例提供的键盘框和结构件装配后的局部断面示意图；
图11为图10中E处的放大示意图；
图12为本申请一实施例提供的键盘框上的藏胶面积的示意图；
图13为本申请一实施例提供的结构件上的点胶示意图；
图14为本申请一实施例提供的对键盘框进行拉拔力测试的取点示意图。
附图标记说明：
100-笔记本电脑；11-第一主体；111-显示屏；12-第二主体；121-触摸板；122-摄像头；200-键盘；20-按键开关；21-键盘框；210-外圈边框；211-横向边框；212-纵向边框；213-第一按键容置孔；214-端面；22-结构件；220-外圈支撑筋；221-横向支撑筋；222-纵向支撑筋；223-第二按键容置孔。
具体实施方式
图1为本申请实施例提供的笔记本电脑的结构示意图。参考图1所示，本申请实施例提供一种笔记本电脑100，包括第一主体11和第二主体12，第一主体11上可以设置显示屏111等部件，第二主体12上可以设置键盘200、触摸板121、摄像头122、主板、电池、散热风扇(图中未示出)等部件。
第一主体11和第二主体12可以通过转轴、铰链等装置转动连接，使第一主体11和第二主体12可以相对转动，方便用户调整笔记本电脑的打开角度，图1为第一主体11和第二主体12转动至展开状态的示意图，当第一主体11和第二主体12转动至互相贴合时，笔记本电脑100体积缩小，方便收纳和携带。
其中，用户可以通过敲击键盘200与笔记本电脑100进行交互，键盘200占据第二主体12的大部分空间，作为主要的输入设备，键盘200的结构可靠性、装配精度等因素对笔记本电脑100整体的性能具有较大的影响。
键盘200可以包括呈阵列排布的多个按键开关20，多个按键开关20分别对应不同的输入，例如26个英文字母、10个阿拉伯数字、开始、空格、回车、切换、删除等，多个按键开关20和主板连接，用户敲击按键开关20可以实现多种输入功能。摄像头122可以集成在键盘200中的一个按键上，作为升降式摄像头实现摄像功能。
键盘200还可以包括键盘框，键盘框可以通过热熔或者螺钉锁附的方式与第二主体12固定，键盘框上设置有多个按键容置孔，以容纳多个按键开关20，不干涉按键开关20的下移和回弹。键盘框可以通过背胶或点胶的方式固定在结构件上，该结构件可以为第二主体12的外壳的一部分。
采用背胶贴附键盘框和结构件时，存在一定比例的开胶问题，粘接可靠性差；采用可靠性更高的点胶贴附方案时，则可能存在严重的溢胶问题，胶溢到外壳的表面，需要工作 人员耗费较多时间和精力进行清胶工作；且人工清理残胶后，胶量不足会导致键盘框能承受的拉拔力变低，从而影响键盘200及笔记本电脑100整体的质量。
为了减轻溢胶问题和保证连接可靠性，相关技术中，采用在键盘框上设置溢胶槽或者挡胶墙的方案。
图2为相关技术提供的键盘的局部断面示意图。参考图2所示，该相关技术中，键盘框21上相邻的两个按键容置孔之间具有窄边，该窄边上开设有弧形溢胶槽2101，弧形溢胶槽2101位于键盘框21的与结构件22贴合的一侧。采用点胶设备在结构件22上点胶后，键盘框21在压合治具的作用下与结构件22贴合，胶可以被限制在弧形溢胶槽2101内，弧形溢胶槽2101增加了溢胶空间，可以减少胶量的溢出。
该相关技术提供的方案中，通过点胶粘接键盘框21和结构件22，弧形溢胶槽2101在一定程度上可以增加容胶量，提高粘接的可靠性，且一定程度上可以减少胶溢出。但是，键盘框21和结构件22压合时可能会存在偏位的问题，且键盘框21的窄边宽度有限，弧形溢胶槽2101的空间有限，从而导致键盘框21仍然存在高比例的溢胶问题，需要人工进行清胶。并且，胶溢出弧形溢胶槽2101外时，键盘框21和结构件22原本紧密贴合的位置可能会由于溢出的胶的存在，而导致键盘框21和结构件22的贴合不够平整，从而影响键盘200整体的装配精度和外观美观性。
图3为另一种相关技术提供的键盘的局部断面示意图。参考图3所示，在另一种相关技术中，键盘框21上相邻的两个按键容置孔之间具有窄边，该窄边上设置有挡胶墙2102，窄边两侧各设置一个挡胶墙2102，两侧的挡胶墙2102与窄边构成U型凹槽。采用点胶设备在结构件22上点胶后，键盘框21在压合治具的作用下与结构件22贴合，挡胶墙2102的端部和结构件22紧密贴合，胶可以被限制在该U型凹槽内。
相比于弧形溢胶槽2101，挡胶墙2102围设形成的U型凹槽的溢胶空间更大，因此可以进一步减少胶溢出。但是，键盘框21的窄边本身尺寸较小，挡胶墙2102极窄，成型上容易产生毛边，且可能会发生胶填充不满导致粘接不可靠的问题。并且，键盘框21组装时仍然存在一定比例的溢胶，需要人工清胶。
综合上述两种相关技术可以看出，为了避免溢胶现象，通常的思维是在填胶的空间两侧设置遮挡部件，来避免溢胶。但是研究发现，采用遮挡部件来防止溢胶时，在键盘框21和结构件22通过点胶粘接时，还是容易出现溢胶的情况，人工清胶难度大，且产线清胶人力较多，造成生产效率低，成本高。并且，利用人工清理残胶后，胶量不足可能会导致键盘框能承受的拉拔力变低。
经研究产生该现象的原因可能包括：填胶量的多少会影响键盘框和结构件的可靠性，因此为了保证键盘框和结构件之间的可靠性，则填胶量需要达到一定量，往往超过图2和图3中的填胶区域所能容纳的量，在这种情况下，会导致胶的溢出。
基于上述问题，本申请实施例提供一种键盘及电子设备，利用键盘框上的横向边框和纵向边框的断差，使纵向边框和结构件贴合以作为支撑，横向边框和结构件之间的空隙形成藏胶结构，可以增大容胶体积，在满足键盘框的拉拔力的同时，降低溢胶风险，从而减少产线清胶人力。
以下参考附图和具体的实施例来对本申请提供的键盘的结构做具体说明。
图4为本申请实施例提供的键盘框的结构示意图，图5为图4中A处的放大示意图。 参考图4-图6所示，本申请实施例提供的键盘框21，可以包括外圈边框210和设置在外圈边框210内的横向边框211、纵向边框212，横向边框211沿着图示X方向即键盘200的长度方向延伸，纵向边框212沿着图示Y方向即键盘200的宽度方向延伸，横向边框211和纵向边框212交叉设置，限定出多个用来容置按键开关20的第一按键容置孔213。
键盘200具有的多个按键开关20的尺寸大小存在不同，且考虑到输入速度等因素，多个按键开关20在行方向上可以对齐设置，在列方向上可以非对齐设置，即错位排布，这是键盘200自身的结构特性。
对应地，本申请实施例中，横向边框211连接在外圈边框210的相对设置的左边框和右边框之间，每一个横向边框211呈连续设置，多个横向边框211平行设置将键盘框21整体分成若干行。纵向边框212连接在相邻的两行横向边框211之间，或者外圈边框210的上边框和相邻的横向边框211之间，或者外圈边框210的下边框和相邻的横向边框211之间，多个纵向边框212平行设置，但是相邻两行的纵向边框212可以非对齐设置，呈错位排布。对应地，不难理解，第一按键容置孔213在横向上对齐成行，在纵方向上可以呈错位排布。
图6为图5中B处对应的立体图，图7为图5中C-C’对应的剖面图。参考图6和图7所示，横向边框211的表面出于同一水平面上，纵向边框212的表面相对于横向边框211凸出设置，凸出部分的端面214与横向边框211的边沿平齐。结合图4和图5可知，可选地，纵向边框212可以同样相对于外圈边框210凸出设置，凸出部分的与外圈边框210靠近的一侧的端面与外圈边框210的边沿平齐。其中，外圈边框210可以存在至少一部分表面和横向边框211的表面处于同一水平面上。
横向边框211的厚度h1小于纵向边框212的厚度h2，纵向边框212相对于横向边框211凸出部分的高度为Δh，即端面214的高度。在一种具体的实施方式中，横向边框的厚度h1可以处于0.5-0.7mm的范围内，例如可以为0.6mm，纵向边框212的厚度可以处于0.6mm-0.8mm的范围内，例如可以为0.7mm，Δh可以处于0.05mm-0.15mm的范围内，例如可以设置为0.1mm。
图8为本申请一实施例提供的结构件的结构示意图，图9为图8中D处的放大示意图。参考图8和图9所示，本申请实施例提供的结构件22，可以包括外圈支撑筋220和设置在外圈支撑筋220内的横向支撑筋221、纵向支撑筋222，横向支撑筋221沿着图示X方向即键盘200的长度方向延伸，纵向支撑筋222沿着图示Y方向即键盘200的宽度方向延伸，横向支撑筋221和纵向支撑筋222交叉设置且错位排布，限定出多个用来容置按键开关20的第二按键容置孔213。
结构件22两侧表面可以均设置为平齐的表面，结构件22整体的厚度均匀，可以处于0.7-0.9mm的范围内，例如可以为0.8mm。结构件22和键盘框21连接，其中外圈边框210和外圈支撑筋220对应连接，横向边框211和横向支撑筋221对应连接，纵向边框212和纵向支撑筋222对应连接，第一按键容置孔213和第二按键容置孔223对应设置，共同用来容置按键开关20。
结构件22可以作为笔记本电脑100的第二主体12的上表面壳体，需要说明的是，图8所示为与键盘框21相对应的结构件22的结构，其可以为第二主体12的上表面壳体的一部分。结构件22可以由铝、铝镁合金等金属制成，以加强键盘200整体的结构强度，同 时提供光泽的外观。
此外，第一按键容置孔213和第二按键容置孔223可以呈圆角矩形，即横向边框211和纵向边框212的连接处呈圆角设置，横向支撑筋221和纵向支撑筋222的连接处呈圆角设置，以避免横向边框211和纵向边框212的连接处、横向支撑筋221的连接处和纵向支撑筋222的连接处发生应力集中，从而有利于提高键盘200整体的结构强度和外观美观性。该圆角矩形的圆角尺寸在本申请实施例中不做具体限制。
图10为本申请一实施例提供的键盘框和结构件装配后的局部断面示意图，图11为图10中E处的放大示意图。参考图10和图11所示，定义结构件22在上，键盘框21在下，键盘框21的上表面(图4所示表面)和结构件22的下表面(图8所示表面)通过AB胶连接。AB胶即双组分丙烯酸酯结构胶，包括按照10:1的比例混合的A组分和B组分，A组分包括丙烯酸酯单体、增韧剂、还原剂、稳定剂、流变助剂等，B组分过氧化剂、增塑剂、流变助剂等。
由于键盘框21上的纵向边框212相对于横向边框211凸出设置，因此键盘框21和结构件22压合后，纵向边框212与纵向支撑筋222之间紧密贴合，而横向边框211与横向支撑筋221之间可以形成藏胶间隙300。可选地，外圈边框210与外圈支撑筋220之间也可以形成藏胶间隙。
本申请实施例的方案打破在填胶区域两侧都要设置遮挡部件的惯常思维，而取消该遮挡部件，利用横向边框211与横向支撑筋221之间的段差形成藏胶间隙，由于去掉了遮挡部件的设计，因此增大了藏胶间隙，能够降低或避免在将键盘框压合至结构框时，因为藏胶空间不足所导致的溢胶风险。
键盘框21和结构件22的装配工艺过程可以为：首先，将结构件22固定在治具上，利用点胶机在结构件22的外圈支撑筋220和横向支撑筋221上均匀点胶；点胶完成后，对胶重进行测量，并检查是否存在断胶的情况，使点胶状态符合标准；然后，将放置在治具上的键盘框21与结构件22通过热压工艺压合，使AB胶均匀分布在外圈边框210与外圈支撑筋220之间、横向边框211与横向支撑筋221之间形成的藏胶间隙300内，结构件22和键盘框21完成粘接。
图12为本申请一实施例提供的键盘框上的藏胶面积的示意图，其中黑色填充区域为AB胶覆盖的区域。参考图12所示，横向边框211与横向支撑筋221之间可以形成藏胶间隙300，外圈边框210与外圈支撑筋220之间也可以形成藏胶间隙，键盘框21上的最大藏胶面积如图12所示，AB胶可以覆盖键盘框21上的外圈边框210和横向边框211的全部面积。
需要说明的是，外圈边框210指的是围设在横向边框211和纵向边框212四周的主框架，其包括依次连接的上边框、右边框、下边框和左边框。左边框和右边框的外侧可以设置吊耳，用来将键盘框21与其两侧的扬声器等结构连接在一起，上边框的外侧可以设置有用来安装摄像头122的安装台，下边框的外侧可以设置有理线结构。不难理解，AB胶的最大覆盖范围包括外圈边框210的主框架，而可以不包括吊耳、安装台、理线结构。
图13为本申请一实施例提供的结构件上的点胶示意图，图中覆盖在横向支撑筋和外圈支撑筋上的深色粗线条为AB胶。参考图13所示，实际加工过程中，在结构件22上点胶后，点胶的宽度小于横向支撑筋和外圈支撑筋的宽度，且AB胶位于横向支撑筋的中部， 键盘框21和结构件22压合后，AB胶溢出的比例大大降低。
本申请实施例提供的键盘，通过利用键盘框21上的横向边框211和纵向边框212的断差，使键盘框21和结构件22粘接时，相对于横向边框211凸出设置的纵向边框212可以与结构件22紧密贴合作为支撑，而横向边框211和结构件22之间的空隙形成藏胶结构，理论上，可以增大藏胶空间，提高粘接强度，降低溢胶风险。
相比于图2和图3所示的相关技术提供的键盘来说，本申请实施例中，横向边框211的两侧为敞开式的结构，没有设置溢胶槽或挡胶墙，依靠横向边框211和横向支撑筋221之间的间隙作为藏胶结构，藏胶结构的体积更大，在相同的胶量的情况下，本申请实施例提供的方案，溢胶的比例大大降低。
如图12所示，该藏胶结构的最大藏胶量取决于AB胶在键盘框21上的覆盖面积与藏胶间隙200的高度，AB胶在键盘框21上的覆盖面积等于横向边框211的长度乘以宽度，加上外圈边框210的面积，藏胶间隙300的高度即横向边框211和纵向边框212的断差Δh。对于不同型号的键盘200，可以通过微调以上这些数值，以控制键盘200的藏胶结构的最大藏胶量，使键盘框21的在拉拔力测试满足预设拉拔力标准。
另外，需要说明的是，除了藏胶结构自身的最大藏胶量外，影响溢胶风险和拉拔力测试结果的还有点胶的因素。点胶机点胶过程中，通过控制点胶机的气压、挤压速度、点胶速度、胶重、点胶针头直径等参数设定，可以使AB胶均匀而完整地藏于藏胶结构中，从而进一步降低溢胶风险。
在一个具体的实施例中，键盘框21整体的长度可以处于260mm-300mm的范围内，例如可以为282mm；键盘框21整体的宽度可以处于100mm-120mm的范围内，例如可以为112mm。键盘框21和结构件22之间点胶的胶重可以处于0.205-0.403g的范围内。
横向边框211的宽度a1可以处于1mm-1.5mm之间，例如可以为1.25mm。纵向边框212的宽度a2可以处于1mm-1.5mm之间，例如可以为1.25mm。位于外圈边框210的上边框和相邻的横向边框211之间的纵向边框212的宽度a3可以处于1mm-1.6mm之间，例如可以为1.46mm。相邻的两个横向边框211之间的距离b1可以处于16mm-20mm之间，例如可以为17.80mm；相邻的两个纵向边框212之间的距离b2可以处于16mm-20mm之间，例如可以为17.80mm；外圈边框210的上边框和相邻的横向边框211之间的距离b3小于b1，可以处于9mm-12mm之间，例如可以为10.14mm。外圈边框210的宽度不小于横向边框211的宽度，可以处于1mm-1.5mm的范围内。第一按键容置孔213的圆角尺寸可以处于2mm-3mm之间，例如可以设置为2.30mm。
横向支撑筋221的厚度h3即结构件22整体的厚度，可以处于0.7-0.9mm的范围内，例如为0.8mm。藏胶间隙300的高度即纵向边框212相对于横向边框211凸出的高度Δh，可以处于0.05mm-0.15mm的范围内，例如可以设置为0.1mm。
这里需要说明的是，本申请涉及的数值和数值范围为近似值，受制造工艺的影响，可能会存在一定范围的误差，这部分误差本领域技术人员可以认为忽略不计。
图14为本申请一实施例提供的对键盘框进行拉拔力测试的取点示意图。参考图14所示，对于上述具体实施例提供的键盘200，键盘框21上各点需要满足的拉拔力测试标准为5Kg，按照图13所示取拉拔力测试点P1-P10，P1-P10可以分布在键盘框21的四角、中部、外圈中段等多个典型位置或理论上胶量较少的薄弱位置，试验中填充的胶的重量 0.205-0.403g，其小于藏胶间隙的最大体积。实际拉拔力测试中，对不同批次的产品进行测试，测试结果如表1，对P1-P10经过编号1-10次的测试，得到了单位为Kg的拉拔力数据，所有的拉拔力测试数据均超过预设标准5Kg。因此试验结果证明，P1-P10任意位置上的拉拔力均满足预设标准。可见，通过本申请的方案增加了藏胶间隙，该藏胶间隙所容纳的胶量能够满足键盘框和结构件之间的可靠性的要求。
表1
Figure PCTCN2022071514-appb-000001
结合实际测试结果可以证明，采用本申请实施例提供的方案，通过利用键盘框21上的横向边框211和纵向边框212的断差，使而横向边框211和结构件22之间的空隙形成藏胶结构，可以满足键盘框21的拉拔力测试标准，即满足键盘200的粘接可靠性要求。
上述本申请实施例中，对于键盘框21，横向边框211的宽度a1和纵向边框212的宽度a2可以相同，以使相邻的两个第一按键容置孔213在横向上的距离和纵向上的距离相同，有利于加工。或者，横向边框211的宽度a1可以大于纵向边框212的宽度a2，横向边框211的加宽设置，有利于增大横向边框211处的藏胶体积。示例性地，横向边框211的宽度a1与纵向边框212的宽度a2的差值不大于0.2mm。
对于结构件22，在一种可能的实施方式中，横向支撑筋221的宽度可以略大于横向边框211的宽度，纵向支撑筋222的宽度可以略大于纵向边框212的宽度，此时，第二按键容置孔223的面积小于第一按键容置孔213的面积。示例性地，横向支撑筋221的宽度与横向边框211的宽度的差值不大于0.2mm，纵向支撑筋222的宽度与纵向边框212的宽度差值不大于0.2mm。这样设置，一方面，结构件22可以起到对键盘框21的遮蔽作用，有利于防止用户透过按键开关20和第一按键容置孔213的缝隙观察到内部的键盘框21，从而提高外观美观性；另一方面，假使AB胶溢出至横向边框211的两侧，则溢出的AB胶可以沾附在横向支撑筋221的下表面的边缘，而不会溢出并沿着横向支撑筋221的侧壁流动至横向支撑筋221的上表面。
在另一种可能的实施方式中，横向支撑筋221的宽度可以与横向边框211的宽度相同，纵向支撑筋222的宽度可以与纵向边框212的宽度相同，此时，第一按键容置孔213和第二按键容置孔223的面积相等。这样设置，有利于加工，有利于键盘框21和结构件22在压合时的定位，可以很大程度上避免压合偏位的发生，从而提高键盘框21和结构件22的装配精度。
上述本申请实施例中，采用纵向边框212作为支撑，横向边框211和结构件22的间隙作为藏胶结构，这利用了键盘200本身的按键开关20在列方向上错位排布的特性，横向边框211连续延伸，直接连通了外圈边框210相对的左边框和右边框，因而，位于横向边 框211和结构件22间隙内的AB胶，在长度方向上呈整体导通状态，从而，具有一定的流动性的AB胶可以在藏胶结构内分布的更加均匀，在一定程度上可以降低溢胶风险。另外，点胶机构在横向支撑筋221上点胶时，沿着一个方向持续点胶，有利于提高点胶效率和点胶均匀性。
并且，纵向边框212除了起到支撑作用外，还可以起到定位作用。将键盘框21和结构件22压合时，多段纵向边框212与纵向支撑筋222对齐后再压合，有利于提高键盘框21和结构件22的对位精度，从而可以避免压合偏位导致的溢胶、装配精度低、按键开关卡位等现象。
对于上述实施例提供的键盘框21，在另一些实施例中，也可以设置横向边框211相对于纵向边框212、外圈边框210凸出设置，使横向边框211与结构件22紧密贴合作为支撑，而纵向边框212和结构件22之间的空隙形成藏胶结构。或者，也可以设置部分横向边框211和/或部分纵向边框212相对于外圈边框210凸出设置，使凸出部分与结构件22紧密贴合作为支撑，而和外圈边框210平齐的部分与结构件22之间的空隙形成藏胶结构。这两种方案同样可以实现增大藏胶空间，提高粘接强度，降低溢胶风险的效果。
另一些可能的实施例中，键盘框21也可以设置为其它结构。示例性地，横向边框211在行方向上呈错位排布，纵向边框212在列方向上呈错位排布，即横向边框211和纵向边框212均呈不连续设置。或者，横向边框211在行方向上呈错位排布，纵向边框212在列方向上对齐排布，即横向边框211呈不连续设置，纵向边框212呈连续设置。或者，横向边框211在行方向上呈对齐设置，纵向边框212在列方向上对齐设置。
在另一些可能的实施例中，不难理解，可以设置键盘框21两侧的表面平齐，设置结构件22的横向支撑筋221和纵向支撑筋222存在断差，利用横向支撑筋221和纵向支撑筋222的断差作为藏胶结构。
本申请实施例提供的键盘200，可以应用在图1所示的笔记本电脑100中，此时，结构件22可以作为笔记本电脑100的第二主体12的上表面，键盘框21贴附在结构件22的下表面上，并还可以通过热熔或螺钉锁附等方式与第二主体12实现固定连接。由于键盘200利用了键盘框21的横向边框211和纵向边框212之间的断差作为特殊的藏胶结构，可以在满足拉拔力的前提下，降低溢胶风险，降低清胶难度和清胶人力，从而可以降低笔记本电脑100整体的生产成本，提高生产效率。
本申请实施例提供的键盘200，除了应用在笔记本电脑100中以外，也可以应用在其它电子设备中，例如平板电脑、台式电脑、虚拟现实设备、车载装置等。键盘200应用在其它电子设备中时，可以为独立的键盘或者集成在电子设备中，此时，键盘200的结构件22可以直接作为键盘的外壳或电子设备的外壳。键盘200的具体结构也可以有其它变形，如按键开关20的排布方式，可以为横向纵向皆对齐，或者横向纵向皆错位排布等方式，但是，对于利用键盘框21的横向边框和纵向边框的断差作为藏胶结构的方案，均应当落入在本申请的保护范围内。
需要理解的是，本申请实施例提供的利用横向边框和纵向边框的断差作为藏胶结构的方案，适用于窄边结构的粘接，例如对于宽度小于2mm的窄边结构之间的粘接，由于采用常规的如相关技术中的溢胶槽、挡胶墙的方案，受到窄边尺寸的限制，导致粘接可靠性较差，溢胶风险仍较高。而利用断差作为特殊的藏胶结构，如上述分析，具有良好的提高 藏胶量、避免溢胶风险的效果，适用于窄边结构之间的粘接。对于将利用横向窄边和纵向窄边之间的断差作为藏胶结构的方案，应用到例如具有阵列排布的灯珠的背光模组、具有阵列排布的按键的电话等装置中，可以视作在本申请实施例所记载的技术方案的基础上的简单修改。
最后应说明的是：以上各实施例仅用以说明本申请实施例的技术方案，而非对其限制；尽管参照前述各实施例对本申请实施例进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请实施例技术方案的范围。

Claims (10)

  1. 一种键盘，其特征在于，包括：按键开关、通过点胶连接的键盘框和结构件；
    所述键盘框包括横向边框和纵向边框，所述横向边框在行方向上延伸并连续设置，所述纵向边框在列方向上延伸并连接在相邻的两个所述横向边框之间，多个所述纵向边框在列方向上呈错位排布，所述横向边框和所述纵向边框交叉限定出第一按键容置孔；所述结构件包括横向支撑筋和纵向支撑筋，所述横向支撑筋和所述纵向支撑筋交叉限定出第二按键容置孔，所述第一按键容置孔和所述第二按键容置孔对应设置，共同用来容置所述按键开关；
    在所述键盘框的与所述结构件连接的一侧，所述纵向边框相对于所述横向边框凸出设置，所述纵向边框和所述横向支撑筋抵触贴合，所述横向边框和所述横向支撑筋之间构成用来容纳胶的藏胶间隙。
  2. 根据权利要求1所述的键盘，其特征在于，所述键盘框还包括外圈边框，所述横向边框和所述纵向边框连接在所述外圈边框内，所述结构件还包括外圈支撑筋，所述横向支撑筋和所述纵向支撑筋连接在所述外圈支撑筋内，在所述键盘框的与所述结构件连接的一侧，所述纵向边框相对于所述外圈边框凸出设置，所述外圈边框和所述外圈支撑筋之间构成用来容纳胶的藏胶间隙。
  3. 根据权利要求1或2所述的键盘，其特征在于，所述纵向边框相对于所述横向边框凸出部分的端面与所述横向边框的边沿平齐，所述横向边框的用来构成所述藏胶间隙的表面处于同一平面且宽度一致。
  4. 根据权利要求3所述的键盘，其特征在于，所述纵向边框相对于所述横向边框凸出的高度处于0.05mm-0.15mm的范围内。
  5. 根据权利要求1-4任一项所述的键盘，其特征在于，所述横向支撑筋的宽度大于所述横向边框的宽度，所述纵向支撑筋的宽度大于所述纵向边框的宽度。
  6. 根据权利要求1-4任一项所述的键盘，其特征在于，所述横向边框和所述纵向边框的宽度相等。
  7. 根据权利要求6所述的键盘，其特征在于，所述横向边框和所述纵向边框的宽度处于1mm-1.5mm的范围内。
  8. 根据权利要求1-7任一项所述的键盘，其特征在于，所述键盘框为塑胶件，所述结构件为金属件。
  9. 一种电子设备，其特征在于，包括权利要求1-8任一项所述的键盘。
  10. 根据权利要求9所述的电子设备，其特征在于，所述电子设备为笔记本电脑，所述笔记本电脑包括通过转轴连接的第一主体和第二主体，所述第一主体上设置有显示屏，所述第二主体上设置有所述键盘和触摸板，所述键盘的结构件为所述第二主体的面向所述第一主体的外壳。
PCT/CN2022/071514 2021-01-30 2022-01-12 键盘及电子设备 WO2022161164A1 (zh)

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