Trigger key and handheld device

Abstract

The utility model discloses a hand-held device and a trigger button, and relates to the hand-held device technology field, the trigger button comprises a housing, an elastic rack and a button cap, the housing is provided with a mounting hole, one end of the elastic rack is fixedly arranged on the hole edge of the mounting hole, and the other end is provided with an elastic cantilever; a switching part is formed between the elastic frame and the hole edge; the key cap is embedded in the mounting hole and is provided with a rotating part, and the rotating part is rotationally matched with the switching part; a pushing column is formed on the key cap and abuts against the elastic cantilever, and the elastic cantilever pushes the key cap to reset through the pushing column. The rotating part is directly and integrally formed on the key cap, and the elastic cantilever on the elastic frame is used for replacing a common torsion spring. According to the utility model, two key parts, namely a rotating shaft and a torsion spring, are omitted, so that the material quantity is obviously reduced, the assembly process is simplified, and the production cost is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to handheld device technical field, especially a trigger key and handheld device. BACKGROUND

[0002] Taking temperature measurement products as an example, handheld devices are usually designed to facilitate single-handed operation by users, and the key layout and function design are critical. Such devices are usually equipped with multiple keys, such as power keys, measurement keys, etc., each key having a specific function. When the user presses the measurement key, the device will start the temperature measurement sensor, collect temperature data, and display the results.

[0003] The measurement key is usually a trigger key, as shown in the accompanying drawings. Figures 1 to 3 As shown, the trigger key includes a key cap 01, a torsion spring 02, a rotating shaft 03, and a fixed plate 04. During assembly, the torsion spring 02 is first placed in the corresponding position of the key cap 01, then the rotating shaft 03 is inserted through the center shaft hole 02a of the torsion spring 02 until the two ends of the rotating shaft 03 are fitted into the rotating shaft hole 01a of the key cap 01, then the key cap 01 is placed in the corresponding guide slot 05a of the shell 05, and finally the fixed plate 04 is inserted into the corresponding slot 05b. When an external force presses the key cap 01, the key cap 01 rotates through the rotating shaft 03, causing the torsion spring 02 to rotate and deform, providing a tactile sensation for the operation of the key cap 01. When the key cap 01 is released, the key cap 01 rebounds through the torsion force released by the torsion spring 02.

[0004] However, the assembly of such trigger keys requires manual installation of the torsion spring 02 and the rotating shaft 03, which is complicated and time-consuming. For example, it is often difficult to insert the rotating shaft 03 through the key cap 01, making assembly difficult and requiring a large number of components, resulting in high production costs. SUMMARY

[0005] The utility model aims to provide a handheld device and a trigger key, which eliminates the rotating shaft and the torsion spring, reduces the number of components, simplifies assembly, and reduces production costs, effectively solving the problem of high production costs of existing trigger keys.

[0006] To achieve the above-mentioned purpose, the utility model provides a trigger key, which comprises:

[0007] A shell having a mounting hole;

[0008] An elastic frame having one end fixed to the hole rim of the mounting hole and the other end formed with an elastic cantilever; a transition part formed between the elastic frame and the hole rim;

[0009] A key cap embedded in the mounting hole, the key cap having a rotating part that rotates with the transition part; the key cap has a push column that abuts against the elastic cantilever, and the elastic cantilever pushes the key cap back through the push column.

[0010] In some embodiments, the rotating part is a rotating shaft integrally arranged on two opposite sides of the key cap; the hole along is formed with a lower groove on two opposite sides, the elastic frame is formed with an upper groove on two opposite sides, and the rotating part is a rotating groove formed by the lower groove and the upper groove.

[0011] In some embodiments, the elastic frame comprises a connecting beam and two fixing blocks integrally arranged on two ends of the connecting beam, and the connecting beam is integrally and vertically connected with the elastic cantilever; the hole along is formed with a limiting groove, and the fixing blocks are in concave-convex cooperation with the limiting groove; and the fixing blocks are fixed in the limiting groove by fastening screws.

[0012] In some embodiments, a positioning pin and a positioning groove are formed between the fixing block and the limiting groove.

[0013] In some embodiments, the circuit board is further formed with a trigger switch; the elastic frame further comprises a trigger protrusion fixed at an end of the elastic cantilever away from the connecting beam, and the trigger protrusion is provided with an abutting surface and a trigger surface at two ends, respectively, the trigger surface is opposite to the trigger switch, and the abutting surface is opposite to the pushing column.

[0014] In some embodiments, the sealing gasket is further arranged between the circuit board and the elastic frame, and the sealing gasket is formed with a through hole, and the trigger switch is inserted into the through hole.

[0015] In some embodiments, the key cap is fixed with a limiting baffle at an end facing the elastic cantilever, and the limiting baffle is matched with a limiting clamping groove arranged on the hole along.

[0016] In some embodiments, the key cap comprises a left side plate and a right side plate arranged opposite to each other, and a plurality of reinforcing ribs are arranged side by side between the left side plate and the right side plate.

[0017] In some embodiments, the key cap further comprises a pressing plate connected between the left side plate and the right side plate, and the pressing plate is formed with a circular arc groove.

[0018] The utility model also provides a handheld device, including above-mentioned trigger key.

[0019] Compared with the prior art, the structure of the trigger key is optimized, and the complex components and assembly process in the prior design are significantly simplified. Specifically, the rotating part is directly integrally formed on the key cap, so that the rotating part formed between the key cap, the elastic frame and the hole along realizes rotating cooperation, and the existing design is abandoned. The way of separately installing the rotating shaft not only reduces the number of parts, but also avoids the cumbersome steps of assembling the rotating shaft.

[0020] Furthermore, this invention utilizes an elastic cantilever on the elastic frame to replace the torsion spring commonly used in existing designs. The elastic cantilever design not only provides the required elastic restoring force but also makes the assembly of the elastic frame simpler and faster. Compared to traditional torsion springs, the installation of the elastic cantilever does not require precise alignment or additional fixing, further reducing assembly difficulty and operational complexity.

[0021] In summary, by eliminating the two key components of the rotating shaft and the torsion spring, this utility model significantly reduces the amount of materials, simplifies the assembly process, and effectively lowers production costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 An exploded view of the keycap, rotating shaft, and torsion spring of an existing trigger button;

[0024] Figure 2 An exploded view of the keycap and casing of an existing trigger button;

[0025] Figure 3 for Figure 2 A schematic diagram of the inner and outer shell;

[0026] Figure 4 This is a longitudinal sectional view of the trigger button provided in an embodiment of the present utility model;

[0027] Figure 5 An exploded view of the trigger button provided in an embodiment of this utility model;

[0028] Figure 6 This is a cross-sectional view of the trigger button provided in an embodiment of the present utility model;

[0029] Figure 7 for Figure 4 Schematic diagram of the middle shell;

[0030] Figure 8 for Figure 7 A magnified view of part A in the image;

[0031] Figure 9 for Figure 4 Schematic diagram of a flexible frame;

[0032] Figure 10 for Figure 4 Another schematic diagram of the medium-elastic frame;

[0033] Figure 11 for Figure 4 A diagram of the middle keycap;

[0034] Figure 12 for Figure 4 Another illustration of the middle keycap.

[0035] The attached figures are labeled as follows:

[0036] Keycap 01, torsion spring 02, rotating shaft 03, fixing plate 04, and housing 05;

[0037] Central shaft hole 02a;

[0038] Shaft hole 01a;

[0039] Guide groove 05a and slot 05b;

[0040] 1. Housing; 2. Elastic frame; 3. Keycap; 4. Fastening screw; 5. Circuit board; 6. Sealing gasket;

[0041] Mounting hole 11, lower groove 12 and limiting groove 13;

[0042] Hole edge 111;

[0043] Positioning groove 131;

[0044] Elastic cantilever 21, upper groove 22, connecting beam 23, fixing block 24 and trigger protrusion 25;

[0045] Positioning pin 241;

[0046] Contact surface 251 and trigger surface 252;

[0047] The components include: a pusher column 31, a rotating shaft 32, a limiting baffle 33, a left side plate 34, a right side plate 35, a reinforcing rib 36, and a pressing plate 37.

[0048] Trigger switch 51. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] This utility model discloses a trigger button, as shown in the attached figure. Figures 4 to 6 As shown, it includes a housing 1, an elastic frame 2, and keycaps 3. The housing 1 has a mounting hole 11, and the keycaps 3 are embedded in the mounting hole 11. However, it should be noted that the keycaps 3 are not completely embedded, but only partially embedded in the mounting hole 11, with the rest exposed outside the mounting hole 11, so that the fingers can press the keycaps 3.

[0052] One end of the elastic bracket 2 is fixed to the edge 111 of the mounting hole 11, and the other end forms an elastic cantilever 21. The elastic cantilever 21 provides elastic force for the rebound of the keycap 3. Moreover, the elastic cantilever 21 is flat, and its thickness can be adjusted to meet different operating feel of the trigger button. Due to the influence of the manufacturing process, the torque value of the torsion spring will decrease under long-term torsion, while the elastic cantilever 21 can keep the operating feel of the trigger button within a stable range, thus improving performance. It should be noted that the edge of the hole in this text specifically refers to the extension portion extending away from the mounting hole 11 along the edge contour of the mounting hole 11. Specifically, one end of the mounting hole 11 is a square end and the other end is a rounded end. The elastic bracket 2 is preferably symmetrically fixed to both sides of the square end of the mounting hole 11, but it is not limited to this.

[0053] A transition portion is formed between the elastic frame 2 and the hole edge 111. The keycap 3 has a rotating portion, which rotates in conjunction with the transition portion to support the keycap 3's rotation relative to the housing 1, thereby achieving the trigger function. The keycap 3 has a push post 31, which is integrally molded and fixed in the cavity of the keycap 3. The push post 31 abuts against the elastic cantilever 21. When the keycap 3 is pressed, the keycap 3 pushes the elastic cantilever 21 through the push post 31, causing the elastic cantilever 21 to bend and deform until the elastic cantilever 21 triggers the circuit of the circuit board 5 to conduct. When the keycap 3 is released, the keycap 3 returns to its elastic deformation, and the keycap 3 is pushed back to its original position by the push post 31, improving the operating feel.

[0054] This invention optimizes the structure of the trigger button, significantly simplifying the complex components and assembly process of existing designs. Specifically, the rotating part is directly integrally formed on the keycap 3, enabling rotational engagement between it and the transition part formed between the elastic frame 2 and the hole edge 111. This eliminates the need for separate installation of the rotating shaft 32 in existing designs, reducing the number of parts and avoiding the cumbersome steps of assembling the rotating shaft 32.

[0055] Furthermore, this invention utilizes an elastic cantilever 21 on the elastic frame 2 to replace the torsion spring commonly used in existing designs. The design of the elastic cantilever 21 not only provides the required elastic restoring force but also makes the assembly of the elastic frame 2 simpler and faster. Compared to traditional torsion springs, the installation of the elastic cantilever 21 does not require precise alignment or additional fixing, further reducing the assembly difficulty and operational complexity.

[0056] In summary, by eliminating the two key components, the rotating shaft 32 and the torsion spring, this utility model significantly reduces the amount of materials, simplifies the assembly process, and effectively reduces production costs.

[0057] In a preferred embodiment, the rotating part is specifically a rotating shaft 32 integrally disposed on both opposite sides of the keycap 3, and the mounting hole 11 has a recess 12 formed on both opposite sides of the hole 111, as shown in the attached figure. Figure 8 As shown; upper grooves 22 are formed on two opposite sides of the elastic frame 2, as attached. Figure 9 As shown, the connecting part is specifically a rotating groove formed by the engagement of the lower groove 12 and the upper groove 22. The rotating shaft 32 is rotatably engaged with the rotating groove, allowing the rotating shaft 32 to support the keycap 3 to rotate between the hole edge 111 and the elastic frame 2. It should be noted that both the lower groove 12 and the upper groove 22 are semi-circular grooves, but the diameter of the lower groove 12 is larger than the diameter of the upper groove 22. The rotating shaft 32 is formed by two arc surfaces with different diameters, thus limiting the rotation angle of the rotating shaft 32 within the rotating groove and preventing the keycap 3 from excessively rotating and becoming stuck.

[0058] As a preferred embodiment, as shown in the appendix Figure 9 and 10 As shown, the elastic frame 2 includes a connecting beam 23 and two fixing blocks 24 integrally fixed at both ends of the connecting beam 23. The two fixing blocks 24 are symmetrically arranged. The connecting beam 23 is integrally and vertically connected to the elastic cantilever 21. A limiting groove 13 is formed along the hole 111. The fixing blocks 24 are engaged with the limiting groove 13 to limit the position of the elastic frame 2 on the housing 1. The fixing blocks 24 are fixed in the limiting groove 13 by fastening screws 4 to ensure that one end of the elastic frame 2 is reliably fixed to the housing 1. Of course, the fixing method of the fixing blocks 24 is not limited to this. It should be noted that each fixing block 24 is provided with a threaded hole, which is formed on the outside of the fixing block 24. A countersunk groove is also formed on the outside of the fixing block 24. The countersunk groove is connected to the threaded hole and is used to accommodate the head of the fastening screw 4 to avoid interference.

[0059] As a preferred embodiment, as shown in the appendix Figure 8 and 9 As shown, a positioning pin 241 and a positioning groove 131 are formed between the fixing block 24 and the limiting groove 13 to limit the position of the elastic frame 2 on the housing 1, facilitating quick assembly of the elastic frame 2. Specifically, the positioning pin 241 is an integral cylindrical pin provided on the fixing block 24, and the positioning groove 131 is a cylindrical groove provided at the bottom of the limiting groove 13. Of course, interchangeable positions of the positioning pin 241 and the positioning groove 131 do not affect the purpose of this utility model.

[0060] The trigger button also includes circuit board 5, as shown in the attached diagram. Figure 4As shown, the circuit board 5 has a trigger switch 51, which controls the circuit on / off of the circuit board 5. The elastic frame 2 also includes a trigger protrusion 25 fixed to the end of the elastic cantilever 21 away from the connecting beam 23. The trigger protrusion 25 is cylindrical, with both ends extending beyond the elastic cantilever 21. The trigger protrusion 25 has an abutment surface 251 and a trigger surface 252 at its two ends, respectively. The trigger surface 252 is opposite to the trigger switch 51, and the abutment surface 251 is opposite to the push post 31. When the keycap 3 is pressed down, the push post 31 abuts against the abutment surface 251, pushing the elastic cantilever 21 to bend towards the circuit board 5. The trigger surface 252 presses against the trigger switch 51, and the trigger switch 51 controls the circuit of the circuit board 5 to be on. Conversely, when the keycap 3 is released, the trigger surface 252 moves away from the trigger switch 51, and the trigger switch 51 controls the circuit of the circuit board 5 to be off.

[0061] The trigger button also includes a sealing gasket 6 located between the circuit board 5 and the elastic frame 2, as shown in the attached figure. Figure 4 As shown, the gasket 6 is used to prevent short circuits in circuit board 5, reduce the failure rate, and improve the reliability of the trigger button. The gasket 6 can be a silicone gasket, but is not limited to this. The gasket 6 has a through hole into which the trigger switch 51 is inserted, preventing interference or affecting the control accuracy of circuit board 5.

[0062] As a preferred embodiment, a limiting baffle 33 is fixedly provided at the end of the keycap 3 facing the elastic cantilever 21, as shown in the attached figure. Figure 11 and 12 As shown, the limiting baffle 33 cooperates with the limiting slot provided on the edge of the hole 111 to prevent the keycap 3 from coming out of the mounting hole 11, ensuring that one end of the keycap 3 is fixed reliably and the other end can be pressed flexibly.

[0063] Keycap 3 includes a left side panel 34 and a right side panel 35 that are positioned opposite each other, as shown in the attached diagram. Figure 11 and 12 As shown, a cavity is formed between the left side plate 34 and the right side plate 35, and the push post 31 is integrally fixed to one end of the cavity. Several reinforcing ribs 36 are arranged side-by-side between the left side plate and the right side plate 35 to enhance the mechanical strength of the key. Specifically, two reinforcing ribs 36 are provided inside the cavity of the keycap 3, and the two reinforcing ribs 36 and the push post 31 are evenly distributed along the longitudinal center line of the cavity. Of course, the specific number of reinforcing ribs 36 can be adjusted according to the length of the keycap 3, and is not specifically limited here.

[0064] Keycap 3 also includes a press plate 37 connecting the left side panel 34 and the right side panel 35, as shown in the attached diagram. Figure 12 The pressing plate 37 has an arc groove to ensure that the finger fits fully with the pressing plate 37, thus improving the user experience.

[0065] This utility model embodiment also discloses a trigger button, which includes the above-mentioned trigger button and has the same beneficial effects.

[0066] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0067] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A trigger button, characterized in that, include: The housing (1) has mounting holes (11). An elastic frame (2) is provided, one end of which is fixed to the edge (111) of the mounting hole (11), and the other end is provided with an elastic cantilever (21); a transition portion is provided between the elastic frame (2) and the edge (111); The keycap (3) is embedded in the mounting hole (11). The keycap (3) has a rotating part, which rotates in conjunction with the adapter part. The keycap (3) has a push post (31), which abuts against the elastic cantilever (21). The elastic cantilever (21) pushes the keycap (3) to reset through the push post (31).

2. The trigger button according to claim 1, characterized in that, The rotating part is specifically a rotating shaft (32) integrally provided on both opposite sides of the keycap (3); a lower groove (12) is formed on both opposite sides of the hole edge (111), and an upper groove (22) is formed on both opposite sides of the elastic frame (2); the connecting part is specifically a rotating groove formed by the lower groove (12) and the upper groove (22) engaging, and the rotating shaft (32) is rotatably engaged with the rotating groove.

3. The trigger button according to claim 1, characterized in that, The elastic frame (2) includes a connecting beam (23) and two fixing blocks (24) integrally fixed at both ends of the connecting beam (23). The connecting beam (23) is integrally and vertically connected to the elastic cantilever (21). The hole edge (111) forms a limiting groove (13), and the fixing block (24) is in concave-convex fit with the limiting groove (13). The fixing block (24) is fixed in the limiting groove (13) by fastening screws (4).

4. The trigger button according to claim 3, characterized in that, The fixing block (24) and the limiting groove (13) are formed with a positioning pin (241) and a positioning groove (131) that cooperate with each other.

5. The trigger button according to claim 3, characterized in that, It also includes a circuit board (5) on which a trigger switch (51) is formed; the elastic frame (2) also includes a trigger protrusion (25) fixed to one end of the elastic cantilever (21) away from the connecting beam (23), the trigger protrusion (25) having an abutment surface (251) and a trigger surface (252) at both ends, the trigger surface (252) being opposite to the trigger switch (51) and the abutment surface (251) being opposite to the push column (31).

6. The trigger button according to claim 5, characterized in that, It also includes a sealing gasket (6) disposed between the circuit board (5) and the elastic frame (2), the sealing gasket (6) having a through hole, and the trigger switch (51) being inserted into the through hole.

7. The trigger button according to any one of claims 1 to 6, characterized in that, The keycap (3) is fixed with a limiting baffle (33) at one end facing the elastic cantilever (21), and the limiting baffle (33) cooperates with the limiting slot provided on the hole edge (111).

8. The trigger button according to any one of claims 1 to 6, characterized in that, The keycap (3) includes a left side plate (34) and a right side plate (35) arranged opposite to each other, with a number of reinforcing ribs (36) arranged side by side between the left side plate (34) and the right side plate (35).

9. The trigger button according to claim 8, characterized in that, The keycap (3) also includes a pressing plate (37) connected between the left side plate (34) and the right side plate (35), the pressing plate (37) having an arc groove.

10. A handheld device, characterized in that, Includes the trigger button as described in any one of claims 1 to 9.

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