Key and handheld device

Abstract

The utility model discloses a key and a hand-held device, and relates to the technical field of hand-held devices, the key comprises a key cap and a housing, the housing is provided with an accommodating groove, and the key cap is buckled in the accommodating groove; a rotating shaft and a rotating shaft hole which are matched with each other are formed between the key cap and the accommodating groove; and an elastic arm is arranged in the accommodating groove. When the key cap rotates towards the interior of the accommodating groove, the key cap extrudes the elastic arm, and the elastic arm provides hand feeling for the key cap; when the key cap is loosened, the elastic arm pushes the key cap to rotate towards the outside of the accommodating groove by means of elastic force until the key cap rebounds. According to the utility model, the rotating shaft is directly and integrally arranged in the keycap or the accommodating groove, and a rotating shaft does not need to be additionally arranged; moreover, the elastic arm is used for replacing a torsional spring, the elastic arm generates elastic force by utilizing the material characteristics of the elastic arm, and compared with the torsional spring, the elastic arm is relatively low in mounting difficulty; therefore, the number of materials can be reduced, the assembly difficulty can be reduced by simplifying the structure, the assembly is more efficient, and the production cost of the key is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of handheld device technology, and in particular to a button and a handheld device. Background Technology

[0002] Taking temperature measurement products as an example, these handheld devices typically have multiple buttons, such as a power button and a measurement button. The measurement button is used to trigger temperature measurement. The measurement button is a trigger button, as shown in the attached image. Figures 1 to 3 As shown, the trigger button includes a button cap 01, a torsion spring 02, a rotating shaft 03, and a fixing plate 04. During assembly, first, the torsion spring 02 is placed into the corresponding position of the button cap 01. Then, the rotating shaft 03 is passed through the central shaft hole 02a of the torsion spring 02 until both ends of the rotating shaft 03 are installed in the rotating shaft hole 01a of the button cap 01. Next, the button cap 01 is placed in the corresponding guide groove 05a of the outer casing 05, and then the fixing plate 04 is inserted into the corresponding slot 05b. When an external force presses the button cap 01, the button cap 01 rotates the torsion spring 02 through the rotation of the rotating shaft 03, providing a tactile feel for the operation of the button cap 01. When the button cap 01 is released, the button cap 01 rebounds due to the torque released by the rotational deformation of the torsion spring 02.

[0003] However, the assembly of this type of trigger button requires manual installation of the torsion spring 02 and the rotating shaft 03 in sequence, which is a complicated process. For example, the rotating shaft 03 often has difficulty passing through the button cap 01. The assembly is difficult and involves a large number of parts, resulting in high production costs. Utility Model Content

[0004] The purpose of this invention is to provide a button and handheld device. The rotating shaft adopts an integrated design and uses an elastic arm to replace the torsion spring, which reduces the assembly difficulty of the button and solves the technical problem of high production cost of existing trigger buttons.

[0005] To achieve the above objectives, this utility model provides a key, including a keycap and a housing, the housing having a receiving groove, the keycap being fastened into the receiving groove; a rotating shaft and a rotating shaft hole are formed between the keycap and the receiving groove to cooperate with each other; an elastic arm is provided in the receiving groove to assist the keycap in rebounding.

[0006] Preferably, a U-shaped seat is fixedly provided at the bottom of the receiving groove, and a rotating shaft is fixedly provided on each of the two opposite sides of the U-shaped seat; the keycap includes a connecting part that engages with the receiving groove, and a rotating shaft hole is formed on each of the two opposite sides of the connecting part.

[0007] Preferably, the U-shaped seat includes two integral vertical support columns fixed to the bottom of the receiving groove, the height of each support column being less than the depth of the receiving groove; a clearance groove is formed between each support column and the side wall of the receiving groove, the clearance groove being used to avoid the connecting part; a rotating shaft is fixed to the side of each support column facing the clearance groove, and the rotating shaft is located at the end of the support column away from the bottom of the receiving groove.

[0008] Preferably, the keycap further includes a pressing portion fixed to the side of the connecting portion away from the receiving groove, the pressing portion having an arc-shaped concave surface.

[0009] Preferably, a guide slope is formed at the end of the rotating shaft away from the support column, and the guide slope is used to guide the rotating shaft hole to be installed on the rotating shaft.

[0010] Preferably, it also includes a sealing gasket laid in the receiving groove, and an elastic arm formed in the sealing gasket; the keycap has a pressing post protruding on the side facing the receiving groove, and the pressing post abuts against the elastic arm.

[0011] Preferably, the sealing gasket has a through hole; the elastic arm includes a trigger portion and an elastic portion connected between the trigger portion and the edge of the through hole, the elastic portion being conical.

[0012] Preferably, it further includes a circuit board laid between the sealing gasket and the receiving groove, with the sealing gasket completely covering the circuit board; the circuit board forms a trigger switch, and the trigger part has a trigger protrusion; in the direction perpendicular to the receiving groove, the projection of the trigger protrusion falls on the trigger switch; when the trigger protrusion abuts against the trigger switch, the trigger switch realizes circuit conduction.

[0013] Preferably, the edge of the receiving groove is detachably provided with a limiting member. When the keycap is inserted into the receiving groove, the limiting member abuts against the protruding ribs provided on the keycap to prevent the keycap from falling out of the receiving groove.

[0014] This utility model also provides a handheld device, including the aforementioned buttons.

[0015] Compared to the prior art, this utility model optimizes the structure of the key. The optimized key includes a keycap and a housing. The keycap is fastened into a receiving groove in the housing. A rotating shaft and a rotating shaft hole are formed between the keycap and the receiving groove, and an elastic arm is provided in the receiving groove. When the keycap rotates into the receiving groove, the keycap presses against the elastic arm, which provides tactile feedback to the keycap. When the keycap is released, the elastic arm uses its elastic force to push the keycap out of the receiving groove until the keycap springs back.

[0016] In this invention, the rotating shaft is directly and integrally installed in the keycap or receiving groove, eliminating the need for a separate rotating shaft. Furthermore, this invention utilizes an elastic arm instead of a torsion spring. The elastic arm generates elastic force using its own material properties, and its installation is less difficult than that of a torsion spring. Therefore, this invention can reduce the amount of materials and simplify the assembly process, making assembly more efficient and effectively reducing the production cost of the keys.

[0017] The handheld device provided by this utility model includes the aforementioned buttons and has the same beneficial effects. Attached Figure Description

[0018] 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.

[0019] Figure 1 An exploded view of the original keycaps, torsion springs, and rotating shafts;

[0020] Figure 2 An exploded view of the original keycaps and their casing;

[0021] Figure 3 Structural diagram of the original button casing

[0022] Figure 4 An exploded view of the button provided in an embodiment of this utility model;

[0023] Figure 5 A cross-sectional view of the button provided in an embodiment of this utility model;

[0024] Figure 6 for Figure 4 Axonometric view of the middle shell;

[0025] Figure 7 for Figure 6 Another axonometric drawing;

[0026] Figure 8 for Figure 6 Another axonometric drawing;

[0027] Figure 9 for Figure 6 The main view;

[0028] Figure 10 for Figure 9 Sectional view along line AA;

[0029] Figure 11 for Figure 4Structural diagram of the central sealing gasket;

[0030] Figure 12 for Figure 11 Sectional view along the BB direction.

[0031] The attached figures are labeled as follows:

[0032] Keycap 01, torsion spring 02, rotating shaft 03, fixing plate 04, and housing 05;

[0033] Central shaft hole 02a;

[0034] Shaft hole 01a;

[0035] Guide groove 05a and slot 05b;

[0036] 1. Keycap; 2. Housing; 3. Rotating shaft; 4. Rotating shaft hole; 5. Sealing gasket; and 6. Circuit board.

[0037] Receiving groove 21, U-shaped seat 22 and clearance groove 23;

[0038] Connecting part 11, pressing part 12 and pressing post 13;

[0039] Support column 221;

[0040] Guide slope 31;

[0041] Elastic arm 51 and through hole 52;

[0042] Triggering part 511 and elastic part 512;

[0043] Trigger bump 5111;

[0044] Trigger switch 61. Detailed Implementation

[0045] 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.

[0046] 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.

[0047] This utility model discloses a button, which is a trigger button, as shown in the attached figure. Figure 4 and 5As shown, the device includes a keycap 1 and a housing 2. One side of the housing 2 is open, and a receiving groove 21 is formed in its center to accommodate the keycap 1. The keycap 1 is fastened into the receiving groove 21. A rotating shaft 3 and a rotating shaft hole 4 are formed between the keycap 1 and the receiving groove 21, allowing the keycap 1 to rotate relative to the receiving groove 21 under the support of the rotating shaft 3. An elastic arm 51 is provided in the receiving groove 21, and the keycap 1 abuts against the elastic arm 51.

[0048] When the keycap 1 rotates into the receiving groove 21, the keycap 1 presses against the elastic arm 51, and the elastic arm 51 provides tactile feedback to the keycap 1; when the keycap 1 is released, the elastic arm 51 pushes the keycap 1 out of the receiving groove 21 by relying on elastic force until the keycap 1 springs back.

[0049] In this invention, the rotating shaft 3 is directly and integrally installed in the keycap 1 or the receiving groove 21, eliminating the need for a separate rotating shaft 3 and saving installation time. Moreover, this invention uses an elastic arm 51 instead of a torsion spring. The elastic arm 51 generates elastic force using its own material properties, and its installation is easier than that of a torsion spring. Therefore, this invention can reduce the amount of materials and simplify the assembly process, making assembly more efficient and effectively reducing the production cost of the keys.

[0050] As a preferred embodiment, as shown in the appendix Figures 6 to 9 As shown, a U-shaped seat 22 is fixedly provided at the bottom of the receiving groove 21. Specifically, the U-shaped seat 22 is integrally fixed at one end of the receiving groove 21 to support the keycap 1. Rotating shafts 3 are fixedly provided on two opposite sides of the U-shaped seat 22, that is, the rotating shafts 3 are integrally formed and fixed on the two inner or two outer sides of the U-shaped seat 22. The keycap 1 includes a connecting part 11 that engages with the receiving groove 21. The connecting part 11 is surrounded by four side plates. Specifically, the connecting part 11 includes a front side plate and a rear side plate arranged opposite each other, and a left side plate and a right side plate arranged opposite each other. The front side plate is shorter to avoid affecting the rotation of the keycap 1. Rotating shaft holes 4 are formed on two opposite sides of the connecting part 11, and the rotating shafts 3 provided in the U-shaped seat 22 are rotatably engaged with the rotating shaft holes 4 provided in the connecting part 11. Specifically, the left and right side plates of the connecting part 11 are symmetrically formed with pivot holes 4. It should be noted that the pivot holes 4 are formed at the ends of the front and rear side plates away from the rear side plate, and the ends of the front and rear side plates forming the pivot holes 4 are both formed with stepped notches to avoid the bottom of the receiving groove 21. This prevents the ends of the front and rear side plates from contacting and colliding with the bottom of the receiving groove 21 when the keycap 1 rotates, ensuring that the keycap 1 rotates smoothly and preventing the keycap 1 and the receiving groove 21 from wearing out due to contact.

[0051] In a preferred embodiment, the U-shaped base 22 includes a fixing plate and two integrally vertically fixed support columns 221 at the bottom of the receiving groove 21. The two support columns 221 are vertically connected to the fixing plate, and the two support columns 221 are of equal height. However, the height of each support column 221 is less than the depth of the receiving groove 21, increasing the embedding depth of the keycap 1 in the receiving groove 21, thereby reducing space occupation and providing dust prevention. The U-shaped base 22 is not tightly attached to the side wall of the receiving groove 21. The two support columns 221 are symmetrically arranged in the receiving groove 21, and the distance between each support column 221 and the opposite side wall of the receiving groove 21 is equal. A clearance groove 23 is formed between each support column 221 and the side wall of the receiving groove 21, so that the connecting part 11 of the keycap 1 can be inserted into the clearance groove 23 when rotating, allowing the U-shaped base 22 to avoid the connecting part 11. Each support post 221 is fixed with a rotating shaft 3 on one side facing the relief groove 23. That is, the rotating shaft 3 is fixed on the two outer surfaces of the U-shaped seat 22, and the rotating shaft 3 is located at the end of the support post 221 away from the bottom of the receiving groove 21, ensuring that the receiving groove 21 provides sufficient space for the keycap 1 to rotate.

[0052] In a preferred embodiment, the keycap 1 further includes a pressing portion 12 fixed to the side of the connecting portion 11 away from the receiving groove 21. The pressing portion 12 has an arc-shaped concave surface, which increases the contact area between the finger and the pressing portion 12, ensuring that the finger fits the pressing portion 12, facilitating the user's finger application and effectively improving the user experience. Of course, anti-slip pads or anti-slip bumps can also be added to the arc-shaped concave surface to increase the friction between the finger and the pressing portion 12.

[0053] As a preferred embodiment, a guide slope 31 is formed at the end of the rotating shaft 3 away from the support column 221. The guide slope 31 is used to guide the rotating shaft hole 4 to be installed on the rotating shaft 3, which reduces the installation difficulty of the keycap 1, makes assembly more convenient, and reduces production costs.

[0054] The button also includes a sealing gasket 5 laid in the receiving groove 21, as shown in the attached figure. Figure 5 , 11 As shown in Figure 12, the elastic arm 51 is formed on the sealing gasket 5. A pressing post 13 protrudes from the side of the keycap 1 facing the receiving groove 21, and the pressing post 13 abuts against the elastic arm 51. When a finger flips the keycap 1, the pressing post 13 compresses the elastic arm 51, causing the elastic arm 51 to undergo elastic deformation, providing elastic force for the keycap 1 to rebound. It should be noted that the sealing gasket 5 is made of an elastic material, such as a silicone gasket or a rubber gasket.

[0055] In a preferred embodiment, the sealing gasket 5 has a through hole 52 for the trigger switch 61 of the circuit board 6 to pass through. The elastic arm 51 includes a trigger portion 511 and an elastic portion 512 connecting the trigger portion 511 and the edge of the through hole 52. When the elastic arm 51 is in its natural state, the trigger portion 511 is located above the through hole 52; when the keycap 1 presses the elastic arm 51, the trigger portion 511 passes through the through hole 52. The elastic portion 512 is conical, allowing the elastic arm 51 to rebound more effectively.

[0056] The button also includes a circuit board 6 laid between the sealing gasket 5 and the receiving groove 21. The sealing gasket 5 completely covers the circuit board 6, sealing the circuit board 6 and reducing the risk of short circuit and burnout, thus extending the button's lifespan. The circuit board 6 has a trigger switch 61, and the trigger portion 511 has a trigger protrusion 5111; in the direction perpendicular to the receiving groove 21, the projection of the trigger protrusion 5111 falls on the trigger switch 61; as shown in the attached diagram. Figure 5 As shown, when the trigger protrusion 5111 abuts against the trigger switch 61, the trigger switch 61 turns on the circuit.

[0057] The edge of the receiving groove 21 is detachably equipped with a limiting member. When the keycap 1 is inserted into the receiving groove 21, the limiting member abuts against the raised rib on the side wall of the keycap 1, restricting the keycap 1 from moving further. This prevents the elastic arm 51 from dislodging from the receiving groove 21 due to excessive elastic force provided by the elastic arm 51, reducing the failure rate and improving the user experience. Specifically, the limiting member can be a rectangular frame fixed to the edge of the receiving groove 21, but is not limited to this. The raised rib can be formed on two opposite sides of the keycap 1, exposed outside the receiving groove 21. This prevents the keycap 1 from excessively entering the receiving groove 21 and getting stuck when pressed, and also prevents the keycap 1 from dislodging from the receiving groove 21 when released.

[0058] This utility model embodiment also discloses a handheld device, including the above-mentioned buttons, which has the same beneficial effects.

[0059] 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.

[0060] 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 key, characterized in that The utility model provides a keycap (1) and the shell (2) including, the shell (2) is formed with accommodating groove (21), the keycap (1) is buckled in accommodating groove (21);The keycap (1) and accommodating groove (21) between form the rotating shaft (3) and the rotation shaft hole (4) of mutual cooperation;Accommodating groove (21) is equipped with elastic arm (51) in, and the elastic arm (51) is used for assisting the keycap (1) rebound.

2. The key of claim 1, wherein The bottom of the accommodating groove (21) is fixedly provided with a U-shaped seat (22), and the two opposite sides of the U-shaped seat (22) are respectively fixedly provided with the rotating shaft (3); the keycap (1) comprises a connecting portion (11) buckled with the accommodating groove (21), and the two opposite sides of the connecting portion (11) are respectively formed with the rotation shaft hole (4).

3. The key of claim 2, wherein The U-shaped seat (22) comprises two integral vertical support columns (221) fixedly provided on the bottom of the accommodating groove (21), and the height of each support column (221) is less than the depth of the accommodating groove (21); each support column (221) and the side wall of the accommodating groove (21) form an avoiding groove (23), and the avoiding groove (23) is used for avoiding the connecting portion (11); one side of each support column (221) towards the avoiding groove (23) is fixedly provided with the rotating shaft (3), and the rotating shaft (3) is located at the end of the support column (221) away from the bottom of the accommodating groove (21).

4. The key of claim 3, wherein The keycap (1) further comprises a pressing portion (12) fixedly provided on the side of the connecting portion (11) away from the accommodating groove (21), and the pressing portion (12) is formed with a circular arc concave surface.

5. The key of claim 3, wherein One end of the rotating shaft (3) away from the support column (221) is formed with a guide inclined surface (31), and the guide inclined surface (31) is used for guiding the rotation shaft hole (4) to be mounted on the rotating shaft (3).

6. The key according to any one of claims 1 to 5, characterized in that Further comprising a sealing gasket (5) laid in the accommodating groove (21), and the elastic arm (51) is formed on the sealing gasket (5); one side of the keycap (1) towards the accommodating groove (21) is protrudingly provided with a pressing column (13), and the pressing column (13) abuts against the elastic arm (51).

7. The key of claim 6, wherein The sealing gasket (5) is formed with a through hole (52); the elastic arm (51) comprises a trigger portion (511) and an elastic portion (512) connected between the trigger portion (511) and the hole along of the through hole (52), and the elastic portion (512) is conical.

8. The key of claim 7, wherein, Further comprising a circuit board (6) laid between the sealing gasket (5) and the accommodating groove (21), and the sealing gasket (5) completely covers the circuit board (6); the circuit board (6) is formed with a trigger switch (61), and the trigger portion (511) has a trigger protrusion (5111); in the direction perpendicular to the accommodating groove (21), the projection of the trigger protrusion (5111) falls on the trigger switch (61); when the trigger protrusion (5111) abuts against the trigger switch (61), the trigger switch (61) realizes circuit conduction.

9. The key according to any one of claims 1 to 5, characterized in that The edge of the accommodating groove (21) is detachably provided with a limiting piece, when the keycap (1) is installed into the accommodating groove (21), the limiting piece is abutted against the protruding rib provided on the keycap (1) to prevent the keycap (1) from being separated from the accommodating groove (21).

10. A hand-held device, characterized by The keycap (1) is installed into the accommodating groove (21) of the keyboard (2), and the protruding rib provided on the keycap (1) is abutted against the limiting piece provided on the edge of the accommodating groove (21) to prevent the keycap (1) from being separated from the accommodating groove (21).

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