Keyboard bottom plate structure

Abstract

The utility model relates to a keyboard bottom plate structure, which is detachably arranged on a bearing base of an electronic device, is used for bearing a plurality of keys and comprises a keyboard bottom plate and a positioning column. Riveting holes are formed in the positions, corresponding to the keys, of the keyboard bottom plate, and the hole edges of the riveting holes extend downwards to be gradually shrunk in the inclined direction to form a truncated conical hole wall structure. The positioning column is provided with a column body and a hollow end portion, the hollow end portion is formed by axially extending from the column body, and the diameter of the hollow end portion is smaller than that of the column body. And when the hollow end part penetrates through the riveting hole and is pressed to deform towards the truncated conical hole wall structure, the hollow end part and the column body jointly clamp the truncated conical hole wall structure, so that the positioning column is fixedly connected to the riveting hole. The keyboard bottom plate structure can effectively solve the problem that in the prior art, protruding riveting hole platforms of the riveting holes occupy too much space of the bottom plate, so that the configuration elasticity of the positioning columns of the keyboard bottom plate structure is greatly improved, the riveting height of the positioning columns can be reduced, and light and thin design of an electronic device and a keyboard is facilitated.

Description

Technical Field

[0001] This utility model relates to a keyboard base plate structure, and more particularly to a keyboard base plate structure with a truncated conical hole wall structure for clamping the rivet hole at the hollow end of the positioning post. Background Technology

[0002] In terms of current personal computer usage habits, the keyboard is an indispensable input device used to input text, symbols, or numbers. Furthermore, all consumer electronic devices encountered in daily life, as well as large-scale processing equipment used in industry, require keypads as input devices to operate these devices and equipment.

[0003] Generally, keyboards in electronic devices (such as laptops) are assembled using screws to attach the keyboard base, which houses the keys, to the device's mounting base. For example, studs riveted to the keyboard base can be used to secure the keyboard to the mounting base, thus completing the assembly between the keyboard and the electronic device. In prior art, the stud design required protruding riveting holes to be formed on the keyboard base for subsequent stud riveting. For example, ... Figure 1 As shown, before riveting the stud 1 to the keyboard base plate 2, the keyboard base plate 2 must first be placed on a stamping machine table, and the stamping head is used to stamp the keyboard base plate 2 to form a protruding riveting hole platform 3 that is roughly trapezoidal. Then, the stud 1 is riveted to the protruding riveting hole platform 3 using a press riveting fixture, thereby completing the riveting process of fixing the stud 1 to the keyboard base plate 2.

[0004] However, since the molding process of the protruding riveting hole platform 3 will form a riveting hole structure with a large diameter (about 4 mm), it will occupy too much base plate space, thus imposing many restrictions on the number and installation position of the studs on the keyboard base plate. Utility Model Content

[0005] The main objective of this invention is to provide a keyboard base plate structure with a truncated conical hole wall structure for clamping the rivet hole at the hollow end of the positioning post, in order to solve the above-mentioned problems.

[0006] According to one aspect of the present invention, a keyboard base structure is provided, which is detachably mounted on a support base of an electronic device and is used to support a plurality of keys. The keyboard base structure includes:

[0007] The keyboard base plate has at least one riveting hole corresponding to the position of each key, and the edge of each riveting hole extends downward to form a tapered conical hole wall structure; and

[0008] The positioning post has a column body and a hollow end. The hollow end extends axially from the column body and has a diameter smaller than that of the column body. When the hollow end passes through the rivet hole and is deformed by pressure against the truncated conical hole wall structure, the hollow end and the column body together clamp the truncated conical hole wall structure, so that the positioning post is fixed to the corresponding rivet hole.

[0009] As an optional technical solution, the truncated conical hole wall structure is discontinuously formed or serrated along the periphery of the riveting hole.

[0010] As an optional technical solution, the hollow end is formed discontinuously or in a serrated shape along the periphery of the column.

[0011] As an optional technical solution, the positioning post also has a T-shaped head, which is disposed at the other end of the post body relative to the hollow end. The support base has a locking hole corresponding to the position of the positioning post. The locking hole has a through-hole area, a tapered area and a locking hole area. The through-hole area is connected to the locking hole area through the tapered area. When the T-shaped head passes through the through-hole area, the post body passes through the tapered area to lock into the locking hole area, so that the keyboard base plate is fixed to the support base.

[0012] As an optional technical solution, the bearing base has a protrusion on each side of the corresponding tapering area to abut against the T-shaped head, so that the positioning post is engaged in the engagement hole area.

[0013] As an optional technical solution, the bearing base has a straight elastic slot formed on each side of the corresponding tapering zone.

[0014] As an optional technical solution, the support base has an arc-shaped elastic groove formed near the engagement hole area to surround the engagement hole area and the tapering area.

[0015] As an optional technical solution, the end of the hollow end is flush with the upper surface of the keyboard base plate when the hollow end is pressed to clamp the truncated conical hole wall structure together with the column.

[0016] As an optional technical solution, the positioning post is a stud to be locked to the bearing base by screws.

[0017] As an optional technical solution, the inner wall of the end of the hollow end is inclined.

[0018] In summary, compared to the previous riveting method of riveting studs to a protruding riveting hole platform with a large riveting hole structure (approximately 4mm in diameter), this invention adopts a riveting design in which the hollow end of the positioning post clamps the truncated conical hole wall structure of the riveting hole to achieve the effect of reducing the riveting hole diameter (for example, it can be reduced to 2.8mm, but is not limited to this). In this way, this invention can effectively solve the problem mentioned in the previous technology that the protruding riveting hole platform of the riveting hole occupies too much base plate space, thereby greatly improving the flexibility of the positioning post configuration of the keyboard base plate structure, and reducing the riveting height of the positioning post, which is conducive to the thinner and lighter design of electronic devices and keyboards.

[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of a stud riveted to a keyboard base plate using prior art technology.

[0021] Figure 2 This is a partial exploded schematic diagram of an electronic device according to an embodiment of the present invention.

[0022] Figure 3 for Figure 2 A cross-sectional view of the center positioning pin riveted to the keyboard base plate.

[0023] Figure 4 This is a top view schematic diagram of the truncated conical hole wall structure proposed according to different embodiments of the present utility model.

[0024] Figure 5 This is a flowchart illustrating the base plate riveting method proposed according to an embodiment of the present invention.

[0025] Figure 6 This is a cross-sectional schematic diagram showing the application of pressure to the positioning post using a riveting fixture.

[0026] Figure 7 This is a cross-sectional schematic diagram of a keyboard base plate structure according to another embodiment of the present invention.

[0027] Figure 8 An enlarged schematic diagram of a portion of the support base having engagement holes that can engage with positioning posts.

[0028] Figure 9 This is a top view schematic diagram of the engaging hole proposed according to different embodiments of the present utility model. Detailed Implementation

[0029] The following description, accompanied by illustrations, illustrates the technical content of this utility model through specific embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different embodiments. Various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of this utility model. In particular, the structural design and connection relationships of various components in the drawings (such as the structural presentation and proportional size of the keyboard base / rivet holes / positioning pins, the structural design of the riveting fixture, etc.) are for illustrative purposes only and do not represent the actual implementation of this utility model.

[0030] Please see Figure 2 as well as Figure 3 , Figure 2 This is a partial exploded view of the electronic device 10 according to an embodiment of the present invention. Figure 3 for Figure 2 A cross-sectional view of the central positioning post 16 riveted to the keyboard base plate 14 is shown. To clearly illustrate the keyboard mounting design of the electronic device 10, in this utility model drawing, only the support base 11 for supporting the keyboard base plate structure 12 is shown, excluding the keys 13. Other components of the electronic device 10 (such as the device housing, motherboard, screen, etc., whose descriptions are commonly found in prior art and will not be repeated here). The electronic device 10 is preferably a laptop computer, but is not limited to this; it can also be other electronic products with an embedded keyboard (such as a tablet computer) so that the user can press to perform the desired input function. Figure 2 as well as Figure 3 As shown, the keyboard base structure 12 is detachably mounted on the support base 11 of the electronic device 10 and is used to support multiple keys 13 for user input. The keyboard base structure 12 includes a keyboard base 14 and positioning posts 16. The keyboard base 14 has at least one riveting hole 18 at the position corresponding to the multiple keys 13. Figure 2 Only one is shown, but this is not a limitation; the number and location of the riveting holes depend on the keyboard assembly requirements of the electronic device 10. The edge E of the riveting hole 18 extends downward to form a truncated conical hole wall structure 19, which is used for subsequent riveting of the positioning post 16. More specifically, in this embodiment, the truncated conical hole wall structure 19 of this invention can adopt a hole wall annular forming design (e.g., Figure 4 As shown in embodiment (a), but not limited thereto, for example, in another embodiment, such as Figure 4 As shown in embodiment (b), the truncated conical hole wall structure 19' can be formed discontinuously along the peripheral direction E of the riveting hole 18, or, as... Figure 4As shown in embodiment (c), the truncated conical hole wall structure 19” can be serrated along the peripheral direction E of the riveting hole 18, thereby increasing the riveting torque between the riveting hole 18 and the positioning post 16. As for which hole wall structure design is adopted, it depends on the actual manufacturing requirements of the keyboard base plate structure.

[0031] In this embodiment, the positioning post 16 is preferably a stud (with internal threads) to be fixed to the bearing base 11 by screw locking. The positioning post 16 has a connected column body 20 and a hollow end 22. The hollow end 22 can be formed by extending axially from the column body 20 and can preferably be formed continuously in a ring shape along the periphery of the column body 20 (but not limited thereto, it can also be designed with a discontinuous or serrated end structure along the periphery of the column body 20). Before the positioning post 16 is assembled with the keyboard base plate 14, the hollow end 22 of the positioning post 16 is in an initial ring state. The diameter of the hollow end 22 is smaller than the diameter of the column body 20. The number of positioning posts 16 can be determined according to the number of riveting holes 18, so that the positioning posts 16 can be riveted into the corresponding riveting holes 18 to complete the subsequent keyboard base plate assembly operation.

[0032] In one embodiment, the hollow inner diameter of the main body of the hollow end 22 is the same as the hollow inner diameter of the column 20. At the same time, the annular thickness of the hollow end 22 is less than the annular thickness of the column 20. Thus, in the initial state, the diameter of the hollow end 22 (specifically, the outer wall diameter) is less than the diameter of the column (specifically, the outer wall diameter).

[0033] The following provides a detailed explanation of the riveting method for the positioning posts in the keyboard base structure. Please refer to [link / reference needed]. Figure 2 , Figure 3 , Figure 5 as well as Figure 6 , Figure 5 This is a flowchart illustrating the base plate riveting method according to an embodiment of the present invention. Figure 6 The cross-sectional view shows the application of pressure to the positioning pins 16 using the press-fit fixture 4. The base plate riveting method of this utility model includes the following steps:

[0034] Step S50: Provide the keyboard base plate 14 and the positioning post 16;

[0035] Step S52: Pass the hollow end 22 of the positioning post 16 (which is in its initial ring state at this time) through the riveting hole 18 of the keyboard base plate 14;

[0036] Step S54: Use the riveting fixture 4 to apply pressure to the hollow end 22 so that it, together with the column 20 of the positioning post 16, clamps the truncated conical hole wall structure 19 of the riveting hole 18.

[0037] First, as can be seen from step S50, a keyboard base plate 14 with riveting holes 18 can be provided, and a positioning post 16 housed in a riveting fixture 4 (for example, the riveting fixture 4 includes a matching receiving platform 5 and a stamping head 6, and the positioning post 16 is first housed in...) Figure 6 In the riveting fixture 4 shown, the receiving platform 5 is aligned with the riveting hole 18; in one embodiment, the receiving platform 5 has a columnar receiving groove with a stepped cross-section, the diameter of the top of the receiving groove is larger than the diameter of the bottom of the receiving groove, the positioning post 16 is first received in the receiving groove, wherein the column body 20 of the positioning post 16 is located in the bottom space of the receiving groove, and the hollow end 22 of the positioning post 6 (at this time the hollow end 22 is in an initial annular state) is located in the top space of the receiving groove and forms a gap with the side wall of the top space of the receiving groove.

[0038] Next, as described in step S52, the keyboard base plate 14 can be placed in the receiving platform 5, and the hollow end 22 of the positioning post 16 passes through the riveting hole 18 of the keyboard base plate 14 to complete the positioning step before stud riveting (e.g. Figure 6 As shown, at this time, the truncated conical hole wall structure 19 is located within the gap between the aforementioned hollow end 22 and the side wall of the top space of the receiving groove.

[0039] Finally, in step S54, pressure can be applied to the hollow end 22 that has been aligned and inserted using the riveting fixture 4 (e.g., using...). Figure 6 The punch head 6 of the riveting fixture 4 shown is used to press the hollow end 22 against the truncated conical hole wall structure 19 to deform it, so that it and the column 20 (other parts) together clamp the truncated conical hole wall structure 19, so that the positioning post 16 is fixed to the riveting hole 18 (e.g., Figure 3 As shown, the hollow end 22 is in a bent and deformed state at this time. In one embodiment, the outer wall of the hollow end 22 can be closely attached to the inner wall of the truncated conical hole wall structure 19. The end of the truncated conical hole wall structure 19 abuts against the hollow end 22 and the connection between the column 20 and the hollow end 22, but this is not a limitation, so that the keyboard base structure 12 can be detachably installed on the support base 11 of the electronic device 10 by means of screw fastening (e.g., cooperating with the hollow threaded part of the main body 20), thereby completing the keyboard assembly operation of the electronic device 10. In practical applications, by Figure 3 It can be seen that after completing the above riveting process of pressing the hollow end 22 to clamp the truncated conical hole wall structure 19 together with the column 20, the end of the hollow end 22 can be better flush with the upper surface of the keyboard base plate 14 (but is not limited thereto), thereby improving the flatness of the riveting structure of the keyboard base plate structure 12 and reducing the overall space occupied by the keyboard base plate structure 12.

[0040] In one embodiment, the inner wall of the end of the hollow end 22 away from the column 20 (i.e., the end of the hollow end 22) is inclined. This facilitates the alignment accuracy when the stamping head 6 presses down on the hollow end 22 and ensures that the force is uniform throughout the hollow end 22. When the hollow end 22 is pressed to clamp the truncated conical hole wall structure 19 together with the column 20, the outer wall of the hollow end 22 is close to the inner wall of the truncated conical hole wall structure 19. At the same time, the aforementioned inclined inner wall is adjacent to and horizontally flush with the upper surface of the keyboard base plate 14.

[0041] In summary, compared to the previous riveting method of riveting studs to a protruding riveting hole platform with a large riveting hole structure (approximately 4mm in diameter), this invention adopts a riveting design in which the hollow end of the pressure positioning post clamps the truncated conical hole wall structure of the riveting hole to achieve the effect of reducing the riveting hole diameter (for example, it can be reduced to 2.8mm, but is not limited to this). In this way, this invention can effectively solve the problem mentioned in the previous technology that the protruding riveting hole platform of the riveting hole occupies too much base plate space, thereby greatly improving the flexibility of the positioning post configuration of the keyboard base plate structure, and reducing the riveting height of the positioning post, which is conducive to the thinner and lighter design of electronic devices and keyboards.

[0042] It is worth mentioning that the assembly design of fixing the positioning post to the bearing base in this utility model is not limited to the above-mentioned stud locking design; it can also adopt a structural interlocking design. For example, please refer to... Figure 7 as well as Figure 8 , Figure 7 This is a cross-sectional schematic diagram of a keyboard base plate structure 100 according to another embodiment of the present invention. Figure 8 This is a partially enlarged schematic diagram showing the engagement hole 106 formed on the support base 11 that can engage with the positioning post 102. Components in this embodiment that have the same number as those mentioned in the above embodiments represent components with the same or similar structures and functions, and will not be described again here. Figure 7 as well as Figure 8As shown, the keyboard base structure 100 is detachably mounted on the support base 11 of the electronic device 10 and includes a keyboard base 14 and a positioning post 102. The positioning post 102 may have a column body 20, a hollow end 22, and a T-shaped head 104. The T-shaped head 104 is disposed at the other end of the column body 20 relative to the hollow end 22. The support base 11 forms a locking hole 106 at the position corresponding to the positioning post 102. The locking hole 106 may have a through-hole area 108, a tapered area 110, and a locking hole area 112. The through-hole area 108 can be connected to the locking hole area 112 via the tapered area 110. Thus, after the T-shaped head 104 passes through the through-hole area 108 with a larger diameter, the column body 20 can be locked in the locking hole area 112 with a smaller diameter through the tapered area 110, so that the keyboard base 14 is fixed to the support base 11. In addition, in practical applications, the support base 11 may have protrusions 111 formed on both sides of the corresponding tapered area 110 to abut against the interference T-shaped head 104, so that the positioning post 102 can be more securely engaged in the engagement hole area 112.

[0043] It should be noted that, in addition to the aforementioned locking design where the T-shaped head of the interference positioning post abuts against the protrusion, this utility model can also employ, as well as... Figure 9 The bearing base 11 shown in embodiment (a) has an arc-shaped elastic slot 114 formed near the engagement hole area 112 to surround the engagement hole area 112 and the tapering area 110, or adopts an engagement design such as Figure 9 In the embodiment (b), the support base 11 has a locking design with straight elastic slots 116 formed on both sides of the corresponding tapered region 110, thereby improving the elasticity of the hole structure of the tapered region 110 so that the positioning post 102 can be locked into the locking hole region 112 with less effort. The type of locking design used depends on the actual manufacturing requirements.

[0044] The keyboard base plate structure and its riveting method of this utility model adopt a riveting design in which the hollow end of the pressure positioning post is used to clamp the truncated conical hole wall structure of the riveting hole to achieve the effect of reducing the riveting hole diameter. This can effectively solve the problem that the protruding riveting hole platform of the riveting hole in the prior art occupies too much base plate space, thereby greatly improving the flexibility of the positioning post configuration of the keyboard base plate structure, and reducing the riveting height of the positioning post, which is conducive to the thin and light design of electronic devices and keyboards.

[0045] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A keyboard chassis structure detachably mounted on a supporting base of an electronic device and used for supporting a plurality of keys, characterized by, The keyboard base structure comprises: a keyboard base having at least one rivet hole formed at a position corresponding to a plurality of keys, a hole edge of each rivet hole extending downward to form a truncated cone hole wall structure; a positioning column having a column body and a hollow end portion extending axially from the column body, the hollow end portion having a diameter smaller than that of the column body, the hollow end portion and the column body together clamping the truncated cone hole wall structure when the hollow end portion passes through the rivet hole and is deformed toward the truncated cone hole wall structure, so that the positioning column is fixed to the corresponding rivet hole.

2. The keyboard deck structure of claim 1, wherein, The truncated cone hole wall structure is discontinuous or zigzag along the circumferential direction of the rivet hole.

3. The keyboard deck structure of claim 1, wherein, The hollow end portion is discontinuous or zigzag along the circumferential direction of the column body.

4. The keyboard deck structure of claim 1, wherein, The positioning column further has a T-shaped head portion arranged at the other end of the column body relative to the hollow end portion, the support base having a clamping hole formed at a position corresponding to the positioning column, the clamping hole having a perforated area, a tapered area and a clamping hole area, the perforated area being communicated with the clamping hole area via the tapered area; when the T-shaped head portion passes through the perforated area, the column body passes through the tapered area to be clamped in the clamping hole area, so that the keyboard base is fixed to the support base.

5. The keyboard deck structure of claim 4, wherein, The support base has a protrusion formed at a position corresponding to each side of the tapered area to abut and interfere with the T-shaped head portion, so that the positioning column is clamped in the clamping hole area.

6. The keyboard deck structure of claim 4, wherein, The support base has a linear elastic slot hole formed at a position corresponding to each side of the tapered area.

7. The keyboard deck structure of claim 4, wherein, The support base has an arc-shaped elastic slot hole formed at a position adjacent to the clamping hole area to surround the clamping hole area and the tapered area.

8. The keyboard deck structure of claim 1, wherein, The end of the hollow end portion is flush with the upper surface of the keyboard base when the hollow end portion is pressed to clamp the truncated cone hole wall structure together with the column body.

9. The keyboard deck structure of claim 1, wherein, The positioning column is a threaded column to be screwed to the support base.

10. The keyboard deck structure of claim 1, wherein, The inner wall of the end of the hollow end portion is beveled. The positioning column is a threaded column to be screwed to the support base. The inner wall of the end of the hollow end portion is beveled.

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