Electronic equipment and key structure thereof
By designing a button structure including waterproof parts and elastic limit brackets, the problem of complex key structure process and inability to meet different levels of waterproofing requirements in the prior art is solved, and the effect of simple installation and reduction of defective rates is achieved.
Patent Information
- Application Number
- CN202420287536.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-05
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-02-05
AI Technical Summary
The existing button structure has defects such as complex process, inability to meet different levels of waterproofing requirements, or high defect rate.
A key structure including a key body, a waterproof member and an elastic limit bracket is designed. The key body consists of a rod part, a waterproof part and an elastic limit bracket. The waterproof part is arranged on the outer wall of the rod part. The elastic limit bracket is used to limit the key body.
It realizes waterproofing to a certain extent, and is easy to install, improves installation efficiency and reduces the defect rate.
Smart Images
Figure CN222653830U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic equipment, in particular to an electronic equipment and a key structure thereof. Background Art
[0002] Most handheld electronic devices are equipped with buttons. The design of the button structure must comprehensively consider various factors such as waterproof requirements, processing and assembly processes. Currently, the commonly used button solutions include ultrasonic, internal gluing, and casing LSR + glue. Among them, the ultrasonic solution structure generally includes button brackets, keycaps, key silicone, etc., but the ultrasonic process is complex, the defect rate is high, and the processing cost is high; the internal solution structure generally includes keycaps, key silicone, etc., but the internal structure cannot meet the high-level waterproof requirements. If it meets the requirements, the machine must be treated with waterproof glue inside, which is complicated to assemble and has high processing costs; the casing LSR + glue solution generally includes button keycaps, LSR shells, etc., which are assembled by suppliers, but the mold is complex and the cycle is long, and it is easy to have defects such as overflowing glue and crooked keycaps when gluing the button keycaps.
[0003] It can be seen that the current key structure scheme has defects such as complex process, inability to meet different levels of waterproof requirements, or high defect rate. Therefore, it is necessary to propose a new key structure. Utility Model Content
[0004] The utility model aims at the above-mentioned defects of the prior art and provides an improved electronic device and a key structure thereof.
[0005] The technical solution adopted by the utility model to solve the technical problem is: construct a key structure, including:
[0006] The button body comprises a rod portion, wherein the rod portion comprises a pressing end and a triggering end, wherein the pressing end and the triggering end are respectively located at two ends of the rod portion in the axial direction;
[0007] A waterproof member is provided on the outer wall surface of the rod; and
[0008] An elastic limiting bracket is arranged on the rod portion to limit the button body.
[0009] In some embodiments, a groove for arranging the waterproof component is provided on the circumference of the outer wall surface of the rod portion; and the elastic limiting bracket is closer to the trigger end of the rod portion than the waterproof component.
[0010] In some embodiments, the waterproof member is arranged in a ring shape, and the waterproof member is sleeved in the groove of the rod; or,
[0011] The waterproof member is a waterproof ring formed in the groove by an injection molding process.
[0012] In some embodiments, the rod portion includes a mounting column arranged at one end away from the pressing end, the elastic limiting bracket is sleeved on the mounting column and fixed to the mounting column through a fixing portion; the end of the mounting column away from the pressing end is the trigger end.
[0013] In some embodiments, the fixing portion is a flat structure formed by hot-melting an end of the mounting post away from the pressing end, and an end of the flat structure away from the pressing end is the trigger end; or,
[0014] The fixing part is a screw structure; or,
[0015] The fixing portion is an adhesive layer.
[0016] In some embodiments, the elastic limiting bracket includes a through hole for being sleeved on the mounting column and an elastic limiting claw arranged on the outside of the through hole.
[0017] In some embodiments, more than two elastic limiting claws are provided, the two or more elastic limiting claws are distributed along the circumference of the through hole, and the two or more elastic limiting claws are expanded outward toward the end where the pressing end is located.
[0018] In some embodiments, the rod portion further includes a first rod portion and a second rod portion, the first rod portion, the second rod portion, and the mounting column are sequentially connected along the axial direction of the rod portion, and the radial dimensions of the first rod portion, the second rod portion, and the mounting column are sequentially reduced; an end of the first rod portion away from the second rod portion is the pressing end;
[0019] The waterproof component is arranged on the outer wall surface of the first rod portion; the radial dimension of the elastic limiting bracket is larger than the radial dimension of the second rod portion, and smaller than the radial dimension of the first rod portion.
[0020] The utility model also provides an electronic device, comprising a housing, a switch and any one of the above-mentioned key structures, wherein the housing is provided with a mounting groove, the key structure can be mounted in the mounting groove movably back and forth along the axial direction of the mounting groove, and is in contact with the switch or spaced apart from the switch; the waterproof member seals the gap between the rod and the mounting groove;
[0021] The elastic limiting bracket is installed in the installation slot or passes through the installation slot by elastic contraction, and is in an expanded state after being installed in place, and cooperates with the shell to limit the button structure from falling out.
[0022] In some embodiments, the mounting groove is provided with a limiting portion, and the radial dimension of the limiting portion is larger than the radial dimension of the elastic limiting bracket in a contracted state, and smaller than the radial dimension of the elastic limiting bracket in an expanded state.
[0023] The electronic device and key structure thereof implementing the utility model have the following beneficial effects:
[0024] The key structure is waterproof to a certain extent and can be easily installed, thereby improving installation efficiency and reducing defective rates. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:
[0026] Figure 1 It is a structural schematic diagram of a key structure of an embodiment of the utility model in a first state (before the mounting column is hot-melted);
[0027] Figure 2 yes Figure 1 A schematic diagram of the exploded structure of the key structure shown;
[0028] Figure 3 yes Figure 1 A schematic cross-sectional view of the key structure shown;
[0029] Figure 4 It is a structural schematic diagram of a key structure of an embodiment of the utility model in a second state (after the mounting column is hot-melted);
[0030] Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure of the key structure shown;
[0031] Figure 6 It is a structural schematic diagram of an electronic device according to an embodiment of the utility model;
[0032] Figure 7 yes Figure 6 A schematic cross-sectional structure diagram of the electronic device shown;
[0033] Figure 8 yes Figure 7 Schematic diagram of the exploded structure of the electronic device shown.
[0034] In the accompanying drawings, 10. button structure, 1. button body, 11. rod, 111. pressing end, 112. trigger end, 113. groove, 114. mounting column, 115. fixing part, 116. first rod, 117. second rod, 12. pressing part, 2. waterproof part, 3. elastic limiting bracket, 31. main body, 311. through hole, 32. elastic limiting claw, 20. electronic device, 4. shell, 41. mounting groove, 42. side wall, 43. make way space, 44. limiting part, 5. switch. DETAILED DESCRIPTION
[0035] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "horizontal", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in specific directions, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0036] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.
[0037] Figures 1 to 5 A key structure 10 of an embodiment of the utility model is shown. The key structure 10 can be applied to an electronic device 20, for example, a handheld electronic device. The handheld electronic device can be a law enforcement recorder, a walkie-talkie, etc. The key structure 10 has the characteristics of simple structure, easy assembly, and can meet different levels of waterproof requirements and good versatility.
[0038] like Figures 1 to 3 As shown, the key structure 10 includes a key body 1, a waterproof member 2 and an elastic limit bracket 3. The key body 1 includes a rod 11. The rod 11 includes a pressing end 111 and a trigger end 112. The pressing end 111 and the trigger end 112 are respectively located at two ends of the axial direction of the rod 11. It can be understood that the pressing end 111 of the rod 11 is used for being pressed by a user, and the trigger end 112 is used to contact the switch 5 in the electronic device 20, so that when the pressing end 111 of the rod 11 is pressed, the rod 11 moves toward the switch 5 in the electronic device 20, and when the trigger end 112 contacts the switch 5, the circuit of the switch 5 can be turned on to realize the key function.
[0039] In this embodiment, the button body 1 may further include a pressing portion 12 , which is disposed at the pressing end 111 of the rod 11 , and the size of the pressing portion 12 is larger than the size of the pressing end 111 of the rod 11 , so as to facilitate pressing by the user.
[0040] The waterproof component 2 is arranged on the outer wall surface of the rod portion 11. It can be understood that when the key structure 10 is installed in the installation groove 41 of the electronic device 20, the waterproof component 2 seals the gap between the rod portion 11 and the installation groove 41, thereby achieving a waterproof function.
[0041] A groove 113 for arranging the waterproof member 2 is provided on the circumference of the outer wall surface of the rod 11. The groove 113 is extended along the circumference of the rod 11, so that the waterproof member 2 is arranged around the rod 11 to achieve circumferential waterproofing. The groove 113 can be formed by the rod 11 being recessed inwardly. The arrangement of the groove 113 facilitates the arrangement of the waterproof member 2 and facilitates the waterproof member 2 to achieve close fit with the rod 11.
[0042] It is understandable that different levels of waterproofing requirements can be met by setting different waterproofing parts 2. In this embodiment, the waterproofing part 2 can be set in a ring shape, and the waterproofing part 2 is sleeved in the groove 113 of the rod 11 (shown in the figure). The waterproofing part 2 can be optionally a waterproof ring made of silicone material, and the cross-section can be circular. It is understandable that when installing the waterproofing part 2, the elasticity of the waterproofing part 2 is utilized to open the waterproofing part 2 and sleeve it in the groove 113 of the rod 11. This installation method is simple, easy to operate in production, and can meet low-level waterproofing requirements.
[0043] The groove 113 may have a deformation space for the waterproof component 2 to deform, so that the waterproof component 2 can be tightly matched with the wall surface of the groove 113 through deformation.
[0044] Alternatively, the waterproof member 2 may be a waterproof ring formed in the groove 113 by an injection molding process, and the waterproof ring is an LSR liquid silicone waterproof ring, which can meet high-level waterproof requirements (not shown in the figure). It can be understood that the manufacturing process of the LSR liquid silicone waterproof ring includes injecting the LSR material into the mold and forming a sealing ring after high-temperature vulcanization. This sealing ring has the characteristics of flexibility, wear resistance, chemical corrosion resistance, etc., and can maintain stable performance under harsh environmental conditions, so it can meet high-level waterproof requirements.
[0045] The elastic limiting bracket 3 is arranged on the rod 11 to limit the key body 1. It can be understood that when the key structure 10 is installed in the installation slot 41 of the electronic device 20, the elastic limiting bracket 3 cooperates with the housing 4 of the electronic device 20 to achieve the limiting of the key structure 10.
[0046] like Figures 1 to 3As shown, the rod 11 includes a mounting post 114 disposed at one end away from the pressing end 111, and the elastic limiting bracket 3 is sleeved on the mounting post 114. Accordingly, the elastic limiting bracket 3 may include a through hole 311 for sleeved on the mounting post 114, and is sleeved on the mounting post 114 of the rod 11 through the through hole 311, so as to facilitate the connection between the two. Among them, the end of the mounting post 114 away from the pressing end 111 is the trigger end 112, which is used to contact the switch 5.
[0047] Combination Figure 4 and Figure 5 As shown, the elastic limiting bracket 3 can be fixed to the mounting column 114 through the fixing portion 115, and the fixing portion 115 can be a flat structure formed by hot melting at one end of the mounting column 114 away from the pressing end 111. It can be understood that after the elastic limiting bracket 3 is sleeved on the mounting column 114, the end of the mounting column 114 away from the pressing end 111 can be turned into a liquid state by hot melting, and then cooled and solidified again to form a flat structure, and the radial dimension of the flat structure is larger than the radial dimension of the through hole 311 of the elastic limiting bracket 3, so as to fix the elastic limiting bracket 3 on the mounting column 114 and make the two become one. It can be understood that the hot melting process is relatively simple, easy to produce, and makes the mounting column 114 consistent and reliable. Optionally, the rod 11 can be made of plastic material for easy hot melting.
[0048] It is understandable that the fixing portion 115 formed by hot melting is located at the end farthest from the pressing end 111, so the end of the flat structure farthest from the pressing end 111 is the trigger end 112. It is understandable that the height of the fixing portion 115 can be changed by adjusting the height of the hot melting head, thereby changing the distance between the key structure 10 and the switch 5 in the electronic device 20, thereby changing the hand feel.
[0049] It is understandable that the fixing portion 115 may also be a screw structure. When the elastic limiting bracket 3 is sleeved on the mounting column 114, the elastic limiting bracket 3 can be locked on the mounting column 114 through the screw structure. The screw structure may include a screw inserted into the mounting column 114 and a nut for locking the screw. Alternatively, the fixing portion 115 may be an adhesive layer. When the elastic limiting bracket 3 is sleeved on the mounting column 114, the elastic limiting bracket 3 can be fixed on the mounting column 114 by glue, and the adhesive layer is formed after the glue solidifies. It is understandable that in the embodiment in which the elastic limiting bracket 3 is fixed by a screw structure or an adhesive layer, since the mounting column 114 is located at the end farthest from the pressing end 111, the end of the mounting column 114 farthest from the pressing end 111 is the trigger end 112.
[0050] like Figures 1 to 3As shown, the elastic limiting bracket 3 is closer to the trigger end 112 of the rod 11 than the waterproof member 2. So that the elastic limiting bracket 3 can limit the key structure 10 at the end away from the pressing end 111 without affecting the movement of the rod 11 and the waterproof performance of the waterproof member 2. It can be understood that in other embodiments, the elastic limiting bracket 3 can also be farther away from the trigger end 112 of the rod 11 than the waterproof member 2, and the groove 113 is correspondingly arranged on the rod 11, as long as it does not affect the movement of the rod 11 and the waterproof performance of the waterproof member 2.
[0051] The elastic limiting bracket 3 also includes an elastic limiting claw 32 disposed outside the through hole 311, and more than two elastic limiting claws 32 are provided, and the two or more elastic limiting claws 32 are distributed along the circumference of the through hole 311, and the two or more elastic limiting claws 32 are expanded outward toward the end where the pressing end 111 is located. Specifically, the elastic limiting bracket 3 may include a main body 31 and an elastic limiting claw 32, and the through hole 311 is provided on the main body 31, and the two or more elastic limiting claws 32 are distributed at intervals along the circumference of the main body 31, and the two or more elastic limiting claws 32 may be evenly distributed. Optionally, the elastic limiting claws 32 may be provided with 4, or may be set to 2, 3, 5 or more.
[0052] The elastic limiting bracket 3 can be made of elastic metal, for example, the elastic limiting bracket 3 can be made of steel. Since the elastic limiting claw 32 is elastic, the elastic limiting claw 32 can elastically contract to reach a contracted state, or expand to reach an expanded state; the elastic limiting claw 32 is tilted toward the end where the pressing end 111 is located, so that the end of the elastic limiting claw 32 can achieve limitation by cooperating with the shell 4 of the electronic device 20.
[0053] like Figure 3 As shown, in this embodiment, the rod portion 11 also includes a first rod portion 116 and a second rod portion 117. The first rod portion 116, the second rod portion 117, and the mounting column 114 are sequentially connected along the axial direction of the rod portion 11, and the radial dimensions of the first rod portion 116, the second rod portion 117, and the mounting column 114 are sequentially reduced; the end of the first rod portion 116 away from the second rod portion 117 is a pressing end 111.
[0054] The waterproof member 2 is disposed on the outer wall surface of the first rod portion 116, and the radial dimension of the elastic limiting bracket 3 is greater than the radial dimension of the second rod portion 117, and smaller than the radial dimension of the first rod portion 116. It can be understood that the radial dimension of the elastic limiting bracket 3 is the radial dimension of the elastic limiting bracket 3 as a whole, wherein the radial dimension of the main body 31 of the elastic limiting bracket 3 can be the same or similar to the radial dimension of the end of the second rod portion 117 close to the trigger end 112, so that the second rod portion 117 supports the main body 31 while not affecting the contraction and expansion of the elastic limiting claw 32.
[0055] The end face of the elastic limiting claw 32 is spaced apart from the first rod portion 116, and the radial dimension of the first rod portion 116 is larger than the radial dimension of the elastic limiting bracket 3 when it is unfolded, so that when the button structure 10 is installed in the mounting groove 41 of the electronic device 20, the elastic limiting claw 32 is prevented from scratching the inner wall of the mounting groove 41 and affecting the sealing fit between the waterproof component 2 and the mounting groove 41.
[0056] Among them, the first rod portion 116, the second rod portion 117, and the mounting column 114 can be concentrically arranged cylinders with different diameters. The inner diameter of the through hole 311 of the elastic limiting bracket 3 is slightly larger than the diameter of the mounting column 114 to facilitate the installation of the elastic limiting bracket 3.
[0057] The utility model also provides an electronic device 20, such as Figures 6 to 8 As shown, the electronic device 20 includes a housing 4, a switch 5 and a key structure 10, and the key structure 10 can be the key structure 10 of the above-mentioned embodiment, wherein the housing 4 is provided with a mounting groove 41, and the key structure 10 can be installed in the mounting groove 41 along the axial direction of the mounting groove 41 and can be moved back and forth, and is in contact with the switch 5 or is spaced from the switch 5; the waterproof member 2 seals the gap between the rod 11 and the mounting groove 41; the elastic limiting bracket 3 is installed in the mounting groove 41 or passes through the mounting groove 41 by elastic contraction, and is in an expanded state after being installed in place, and is limited to cooperate with the housing 4 to limit the key structure 10 from slipping out. It can be understood that the axial direction of the mounting groove 41 is in the same direction as the axial direction of the key structure 10.
[0058] The button structure 10 can be installed in the mounting groove 41 so as to move back and forth along the axial direction of the mounting groove 41. It can be understood that when the elastic limiting bracket 3 is installed in place, the button structure 10 can be prevented from falling out; after the elastic limiting bracket 3 is installed in place, the button structure 10 can move back and forth along the axial direction of the mounting groove 41 to realize the control of the switch 5.
[0059] In this embodiment, the mounting groove 41 can pass through the shell 4 in the thickness direction of the shell 4. The shell 4 is provided with a side wall 42 corresponding to the first rod portion 11, a clearance space 43 for the pressing portion 12 to move toward the end where the trigger end 112 is located, and a limiting portion 44 at the corresponding mounting groove 41. The limiting portion 44 can be arranged on the inner wall surface of the end of the mounting groove 41 away from the outside. The radial dimension of the limiting portion 44 is larger than the radial dimension of the elastic limiting bracket 3 when it is in a contracted state, and smaller than the radial dimension of the elastic limiting bracket 3 when it is in an expanded state.
[0060] The limiting portion 44 may protrude from the side wall 42 toward the inner side of the installation groove 41 , and the limiting portion 44 is disposed along the inner circumference of the side wall 42 , thereby performing unidirectional limiting on the elastic limiting bracket 3 in the circumferential direction.
[0061] It can be understood that the key structure 10 of the above-mentioned embodiment can be directly installed from the outside to the inside in the installation groove 41 of the shell 4. Since the radial dimension of the limiting portion 44 is smaller than the radial dimension of the elastic limiting bracket 3 in the expanded state, the elastic limiting bracket 3 will be elastically deformed under the interference of the limiting portion 44 and shrink and gather inward to pass through the installation groove 41; when the elastic limiting bracket 3 passes through the installation groove 41, it is installed in place, and the elastic limiting bracket 3 returns to the expanded state due to its own elasticity. Since the radial dimension of the elastic limiting bracket 3 in the expanded state is larger than the radial dimension of the limiting portion 44, the limiting portion 44 will limit the elastic limiting bracket 3 from moving upward (such as Figure 7 As shown), the key structure 10 is restricted from escaping outwards.
[0062] In the embodiment where the elastic limiting bracket 3 is farther from the trigger end 112 of the rod 11 than the waterproof member 2, the limiting portion 44 can be arranged inside the mounting groove 41, and a space for the elastic limiting bracket 3 to move is arranged inside the mounting groove 41. Therefore, when the key structure 10 is installed in the mounting groove 41 and the elastic limiting bracket 3 passes through the limiting portion 44, the elastic limiting bracket 3 is installed in place, and the elastic limiting bracket 3 can also limit the key body 1. After the elastic limiting bracket 3 is installed in place, the key structure 10 can move back and forth along the axial direction of the mounting groove 41, and the waterproof member 2 maintains the gap between the sealing rod 11 and the mounting groove 41.
[0063] The size of the pressing portion 12 is larger than the size of the inner wall surface surrounded by the side wall 42 , thus limiting the button structure 10 from falling inwards, and thereby limiting the button structure 10 in the installation groove 41 through the cooperation between the pressing portion 12 and the elastic limiting bracket 3 .
[0064] It can be understood that when the key structure 10 is installed in the installation groove 41, the waterproof member 2 contacts the inner wall surface of the side wall 42, and the waterproof member 2 cooperates with the first rod portion 11 and the side wall 42 to seal the gap between the first rod portion 11 and the side wall 42, and maintains the sealing performance during the movement of the key structure 10 in its axial direction. It can be understood that the waterproof member 2 can achieve the waterproof function by interference fit with the first rod portion 11 and the side wall 42.
[0065] The switch 5 has elastic force, and the switch 5 is arranged on the inner side of the mounting groove 41. The switch 5 corresponds to the mounting groove 41, and can be arranged at a distance from the mounting groove 41. When the key structure 10 is installed in the mounting groove 41, the trigger end 112 of the key structure 10 is spaced from the switch 5. When the pressing portion 12 is pressed, the entire key structure 10 moves in the direction of the switch 5, and contacts the switch 5, so that the internal circuit of the switch 5 is turned on to realize the key function; when the pressing portion 12 is released, the switch 5 rebounds upward, and the key structure 10 moves away from the side where the switch 5 is located under the elastic force of the switch 5, and resets to keep a distance from the switch 5. It can be understood that the switch 5 can be a pot piece, a touch switch, etc.
[0066] In the utility model, when assembling the button structure 10, the waterproof component 2 can be firstly set on the first rod portion 116, and then the elastic limiting bracket 3 can be sleeved on the mounting column 114, and the fixing portion 115 is formed by hot-melting the mounting column 114 to fix the elastic limiting bracket 3, and finally the assembled button structure 10 is inserted into the mounting groove 41 of the shell 4 from the outside to the inside.
[0067] It can be understood that the assembled key structure 10 can be directly installed in the housing 4, which is easy to operate, eliminating complex operations such as ultrasound and gluing, improving efficiency, and meeting different levels of waterproof requirements, increasing versatility. The trigger end 112 of the rod 11 directly contacts the switch 5, and the pressing feel is clear. The distance between the trigger end 112 and the switch 5 can be adjusted by adjusting the height of the hot melt head, so that the pressing feel and the size of the mounting column 114 can be more conveniently controlled.
[0068] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should belong to the scope covered by the claims of the utility model.
Claims
1. A key structure, characterized in that: include: The button body (1) comprises a rod portion (11), wherein the rod portion (11) comprises a pressing end (111) and a triggering end (112), wherein the pressing end (111) and the triggering end (112) are respectively located at two ends of the rod portion (11) in the axial direction; A waterproof member (2) is arranged on the outer wall surface of the rod portion (11); and An elastic limiting bracket (3) is arranged on the rod portion (11) to limit the position of the key body (1).
2. The key structure according to claim 1, characterized in that: A groove (113) for arranging the waterproof component (2) is provided on the circumference of the outer wall surface of the rod portion (11); the elastic limiting bracket (3) is closer to the trigger end (112) of the rod portion (11) than the waterproof component (2).
3. The key structure according to claim 2, characterized in that: The waterproof component (2) is arranged in a ring shape, and the waterproof component (2) is sleeved in the groove (113) of the rod part (11); or, The waterproof component (2) is a waterproof ring formed in the groove (113) by an injection molding process.
4. The key structure according to claim 1, characterized in that: The rod portion (11) comprises a mounting post (114) arranged at one end away from the pressing end (111); the elastic limiting bracket (3) is sleeved on the mounting post (114) and fixed to the mounting post (114) via a fixing portion (115); the end of the mounting post (114) away from the pressing end (111) is the trigger end (112).
5. The key structure according to claim 4, characterized in that: The fixing portion (115) is a flat structure formed by hot melting at one end of the mounting column (114) away from the pressing end (111), and the end of the flat structure away from the pressing end (111) is the trigger end (112); or, The fixing portion (115) is a screw structure; or, The fixing portion (115) is an adhesive layer.
6. The key structure according to claim 4, characterized in that: The elastic limiting bracket (3) comprises a through hole (311) for being sleeved on the mounting column (114) and an elastic limiting claw (32) arranged outside the through hole (311).
7. The key structure according to claim 6, characterized in that: More than two of the elastic limiting claws (32) are provided, the two or more elastic limiting claws (32) are distributed along the circumference of the through hole (311), and the two or more elastic limiting claws (32) are spread outwards toward the end where the pressing end (111) is located.
8. The key structure according to claim 4, characterized in that: The rod portion (11) further comprises a first rod portion (116) and a second rod portion (117); the first rod portion (116), the second rod portion (117) and the mounting post (114) are sequentially connected along the axial direction of the rod portion (11), and the radial dimensions of the first rod portion (116), the second rod portion (117) and the mounting post (114) are sequentially reduced; an end of the first rod portion (116) away from the second rod portion (117) is the pressing end (111); The waterproof component (2) is arranged on the outer wall surface of the first rod portion (116); the radial dimension of the elastic limiting bracket (3) is larger than the radial dimension of the second rod portion (117) and smaller than the radial dimension of the first rod portion (116).
9. An electronic device, characterized in that: The invention comprises a housing (4), a switch (5) and a key structure (10) according to any one of claims 1 to 8, wherein the housing (4) is provided with a mounting groove (41), the key structure (10) can be mounted in the mounting groove (41) movably back and forth along the axial direction of the mounting groove (41), and is in contact with the switch (5) or spaced from the switch (5); the waterproof member (2) seals the gap between the rod (11) and the mounting groove (41); The elastic limiting bracket (3) is installed in the installation groove (41) or passes through the installation groove (41) by elastic contraction, and is in an unfolded state after being installed in place, and is limitedly matched with the shell (4) to limit the key structure (10) from falling outward.
10. The electronic device according to claim 9, characterized in that: The mounting groove (41) is provided with a limiting portion (44), the radial dimension of the limiting portion (44) being larger than the radial dimension of the elastic limiting bracket (3) in a contracted state, and smaller than the radial dimension of the elastic limiting bracket (3) in an expanded state.