CN211858475U - Key mounting structure and equipment - Google Patents
Key mounting structure and equipment Download PDFInfo
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- CN211858475U CN211858475U CN202020630382.7U CN202020630382U CN211858475U CN 211858475 U CN211858475 U CN 211858475U CN 202020630382 U CN202020630382 U CN 202020630382U CN 211858475 U CN211858475 U CN 211858475U
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- elastic portion
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Abstract
The application discloses a key mounting structure and equipment, wherein the key mounting structure is applied to a shell of the equipment and comprises a pressing key main body, an FPC (flexible printed circuit) board and a snap dome; the pressing key main body comprises a pressing part and an elastic part which are integrally formed, and one end of the pressing part is connected and fixed at one end of the elastic part; the shell is provided with a through key hole; the FPC board is positioned on the inner side of the shell and fixedly arranged corresponding to the key hole; the snap dome is fixedly arranged on one side of the FPC board, which faces the key hole, and corresponds to the key hole; according to the fitting of pressing key main part and inserting in the key hole, when pressing the portion of pressing and exerting the pressure towards the inboard direction of casing, press portion of pressing or elastic component will pressure transmits for the dome card, after pressure cancellation, under the restoring force effect of elastic component, press portion of pressing and elastic component answer the normal position. The press key main body manufactured integrally is matched with the FPC board, so that the matching performance of the press key main body and the snap dome is improved, the structure is simple, the assembly relation is simplified, and the sealing performance of the press key is improved.
Description
Technical Field
The utility model relates to equipment button field especially involves a button mounting structure and equipment.
Background
If the key needs to be pressed on the shell of the existing equipment, at least one key is arranged, for example, the keys of IOT (Internet of things) intelligent products such as watches/mobile phones and the like need to be assembled by a third assembly part when assembling key caps, metal pans and other parts, the key and the metal pans are easy to be matched due to the tolerance accumulation of a size chain of each assembly part, the hand feeling is poor, fine springs and rubber rings are adopted to perform the elastic force and the sealing effect at present, the key caps are sealed by single rubber rings, the poor sealing effect is difficult to find when the assembly is performed, the assembly and the disassembly are difficult, materials are easy to lose, the materials are difficult to store, the material waste is caused, and the assembly and the material cost are increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a key mounting structure and equipment aims at simplifying the problem of button assembly relation.
In order to realize the purpose of the utility model, the utility model provides a key mounting structure which is applied to a shell of equipment and comprises a pressing key main body, a FPC board and a snap dome;
the pressing key main body comprises a pressing part and an elastic part which are integrally formed, and one end of the pressing part is connected and fixed at one end of the elastic part;
the shell is provided with a through key hole;
the FPC board is positioned on the inner side of the shell and fixedly arranged corresponding to the key hole;
the snap dome is fixedly arranged on one side, facing the key hole, of the FPC board and corresponds to the key hole;
the pressing key body is inserted into the key hole in a matched mode, when pressure towards the inner side direction of the shell is applied to the pressing portion, the pressing portion or the elastic portion transmits the pressure to the snap dome, and after the pressure is removed, the pressing portion and the elastic portion return to the original position under the action of restoring force of the elastic portion.
Furthermore, the pressing part extends outwards towards the center of one end face of the elastic part to form a raised abutting column, and the elastic part is provided with a through hole for accommodating the abutting column;
when pressure towards the inner side direction of the shell is applied to the pressing portion, the ejection resisting column transmits the pressure to the snap dome.
Furthermore, the key comprises an accommodating cavity, wherein the accommodating cavity is a recessed part formed by extending the inner side wall of the shell along the radial periphery of the key hole, and the depth of the accommodating cavity is smaller than the length of the key hole;
the FPC board and the snap dome are fixedly installed in the accommodating cavity.
Furthermore, the elastic part comprises a first elastic part and a second elastic part, one end of the first elastic part is fixed with the pressing part, and the other end of the first elastic part is fixed with one end of the second elastic part;
the first elastic part is matched and positioned in the key hole, the second elastic part is positioned in the accommodating cavity, and the second elastic part is attached to the FPC board.
Furthermore, the pressing part is formed by plastic or alloy materials, and the elastic part is formed by silica gel materials.
Further, the key body is formed by injection molding of a bicolor mold or nano injection molding.
Further, still include the mounting, the mounting is fixed set up in the bottom of holding the chamber, press the key main part with the casing passes through the mounting is fixed.
Further, the accommodating chamber includes a placing portion for accommodating the second elastic portion and a sealing portion located at an outer periphery of the placing portion;
when the second elastic part is placed on the placing part, a gap between the sealing part and the second elastic part is filled through sealant, and the side face of the second elastic part is sealed and fixed with the shell.
Furthermore, the positioning column is arranged on the shell, the second elastic part and the FPC board are respectively provided with a positioning hole matched with the positioning column, and the second elastic part and the FPC board are sequentially sleeved on the positioning column and fixed.
Furthermore, the metal dome further comprises a reinforcing plate, and the reinforcing plate is fixedly arranged on one surface of the FPC plate, which is opposite to the metal dome.
The utility model also provides an equipment, equipment includes above-mentioned arbitrary one the button mounting structure.
The utility model discloses a button mounting structure and equipment, the beneficial effect that has is, cooperate with the FPC board through the press key main part that adopts integrative manufacturing, improve press key main part and dome piece cooperation performance, simple structure simplifies the equipment relation to improve the sealing performance of button.
Drawings
Fig. 1 is a schematic combination diagram of a key mounting structure according to an embodiment of the present invention;
fig. 2 is a sectional view of a key mounting structure according to an embodiment of the present invention in an assembled state;
fig. 3 is an exploded schematic view of a key mounting structure according to an embodiment of the present invention;
fig. 4 is an exploded schematic view of another direction of a key mounting structure according to an embodiment of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is also changed accordingly, and the connection may be a direct connection or an indirect connection.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 4, an embodiment of the present application provides a key mounting structure, which is applied to a housing 1 of a device, and includes a key pressing main body 2, an FPC board 3, and a snap dome 4; the pressing key main body 2 comprises a pressing part 21 and an elastic part 22 which are integrally formed, one end of the pressing part 21 is connected and fixed at one end of the elastic part 22, the shell 1 is provided with a penetrating key hole 11, and the FPC board 3 is positioned at the inner side of the shell 1 and fixedly arranged corresponding to the key hole 11; the snap dome 4 is fixedly arranged on one side of the FPC board 3 facing the key hole 11 and corresponds to the key hole 11; the key body 2 is inserted into the key hole 11, when the pressing portion 21 is pressed toward the inner side of the housing 1, the pressing portion 21 or the elastic portion 22 transmits the pressing force to the snap piece 4, and when the pressing force is removed, the pressing portion 21 and the elastic portion 22 are restored under the restoring force of the elastic portion 22.
The utility model discloses in, on the equipment of IOT intelligence product was applied to button mounting structure, if be applied to portable electronic equipment, include but not only be limited to the button structure of using such as cell-phone, wrist-watch, portable computer.
A penetrating key hole 11 is formed in a shell 1 of the device, a pressing key main body 2 can be inserted into the key hole 11 in an adaptive manner, the pressing key main body 2 comprises a pressing part 21 and an elastic part 22 which are integrally formed, one end of the pressing part 21 is connected and fixed to one end of the elastic part 22, and an FPC board 3 is located on the inner side of the shell 1 and fixedly arranged corresponding to the key hole 11; the snap dome 4 is fixedly arranged on one side of the FPC board 3 facing the key hole 11 and corresponds to the key hole 11; the main body 2 of the press key is inserted into the key hole 11 in a matching way, when the user applies pressure towards the inner side direction of the shell 1 to the press part 21, the press part 21 transmits the pressure to the snap dome 4, in other embodiments, the pressure can be transmitted to the elastic part 22 by the press part 21, the elastic part 22 transmits the pressure to the snap dome 4 again, the snap dome 4 receives the external force action and then triggers the switch to realize the function of the key switch, and when the user cancels the press force to the press part 21, the press part 21 and the elastic part 22 return to the original position under the restoring force action of the elastic part 22, so that the press part 21 returns to the original state without stress before. The integrally formed pressing key main body 2 does not need to additionally increase a spring to play a spring role, is simple in structure, and simplifies the assembling and mounting relation.
The snap dome (also commonly called metal dome or snap dome) is made of ultrathin (0.05mm-0.1mm in thickness) and superhard (general hardness is HV 480-550) stainless steel materials. Has the advantages of stable contact, strong conductivity, stable rebound and good hand feeling.
In a specific embodiment, the middle part of the pressing key main body 2 is hollowed out, and only the abutting connection position of the pressing key main body 2 abutting against the snap dome 4 is reserved, so that when a user presses the pressing part 21 by applying pressure, the pressing function can be effectively realized; the material of the supporting column for supporting the key main body 2 against the snap dome 4 is the same as that of the pressing part 21, or other metal materials are adopted to be made, the hollow part is made, the weight of the key main body 2 can be reduced, and meanwhile, the material and the cost are saved.
In this embodiment, the pressing portion 21 extends outward toward the center of one end face of the elastic portion 22 to form a protruding abutting column 23, and the elastic portion 22 is provided with a through hole for accommodating the abutting column 23; when a pressing force is applied to the pressing portion 21 in the direction toward the inside of the case 1, the abutting column 23 transmits the pressing force to the snap dome 4.
In this embodiment, the middle of the elastic portion 22 is made into a through hole, the pressing portion 21 extends outward toward the center of one end face of the elastic portion 22 to form a protruding abutting column 23, the abutting column 23 is adapted to penetrate into the through hole, and when a pressure in the direction toward the inner side of the housing 1 is applied to the pressing portion 21, the abutting column 23 transmits the pressure to the snap dome 4. The material of the propping column 23 can be the same as that of the pressing part 21, or made of other metal materials; the abutting column 23 and the pressing part 21 can be manufactured and molded through integral molding, the precision of molded products is improved, and the assembly is simplified.
In this embodiment, the key mounting structure further includes an accommodating cavity 12, the accommodating cavity 12 is a recessed portion formed by extending the inner side wall of the casing 1 along the radial periphery of the key hole 11, and the depth of the accommodating cavity 12 is smaller than the length of the key hole 11; the FPC board 3 and the snap dome 4 are fixedly arranged in the accommodating cavity 12. The accommodating cavity 12 is formed in the inner side of the shell 1 and used for accommodating the FPC board 3 and the snap dome 4, so that the installation volume of the key installation structure can be saved, and the space is saved.
In this embodiment, the elastic portion 22 includes a first elastic portion 221 and a second elastic portion 222, one end of the first elastic portion 221 is fixed to the pressing portion 21, and the other end is fixed to one end of the second elastic portion 222; the first elastic portion 221 is adapted to be located in the key hole 11, the second elastic portion 222 is located in the accommodating cavity, and the second elastic portion 222 is attached to the FPC board 3.
In this embodiment, the second elastic portion 222 is fixedly connected to the first elastic portion 221, and a projection area of the first elastic portion 221 along the key hole 11 direction is smaller than a projection area of the second elastic portion 222, when the first elastic portion 221 is adapted to penetrate into the key hole 11, the second elastic portion 222 is located in the accommodating cavity, one surface of the second elastic portion 222 is attached to the FPC board 3, and the other surface of the second elastic portion 222 abuts against a surface of the key hole 11 facing the hole of the FPC board 3, so that the installation position of the elastic portion 22 is configured to improve the installation accuracy between the elastic portion 22 and the housing 1.
In this embodiment, the pressing portion 21 is formed of plastic or alloy, and the elastic portion 22 is formed of silicone.
In the present embodiment, the key main body 2 is injection-molded by a two-color mold or nano-injection-molded.
The double-color injection molding refers to a molding process that two different materials are injected into the same set of mold, so that the injection molded part is formed by the two materials. Some two materials are different in color, and some materials are different in hardness, so that the assembly performance of the product is improved. In one embodiment, the pressing key main body is injection molded by two materials with different hardness and hardness to realize respective functions, a pressing part made of a first material is injection molded by a plastic mold, then the pressing part is autorotated by a rotating mechanism, and an elastic part made of another material is molded to realize the integrally molded pressing key main body, for example, the pressing part is made of plastic materials such as PP, PE, PVC and the like, and the elastic part is made of silica gel molded by liquid silica gel; in other embodiments, the pressing portion may be formed after the elastic portion is formed, and the pressing key main body may be integrally formed.
Nano injection Molding refers to Nano Molding Technology (NMT), which is a process of combining metal and plastic by Nano Technology, i.e., after Nano treatment is performed on the surface of the metal, plastic is directly injected and molded on the surface of the metal, so that the metal and the plastic can be integrally molded, the structure of a product can be simplified, and the product is lighter, thinner, shorter and smaller. In other embodiments, the pressing portion of the alloy may be used for surface T treatment (nano injection molding pretreatment technology) and clarity, and the elastic portion is injection molded, such as injection molded silicone rubber, to realize an integrally molded pressing key body.
In this embodiment, the key further includes a fixing member 5, the fixing member 5 is fixedly disposed at the bottom of the accommodating cavity 12, and the key pressing body 2 and the housing 1 are fixed by the fixing member 5. In a specific embodiment, the fixing member 4 is made of a back adhesive, and the pressing key main body 2 is attached and fixed to the bottom of the accommodating cavity 12 inside the housing 1 through the back adhesive; in other embodiments, the fixing member 5 can also be attached and fixed by using foam adhesive, and attached and fixed by using back adhesive or foam adhesive, so that the waterproof and fixing effects are effectively realized, and the assembly relation between the pressing key main body 2 and the shell 1 is simplified.
In this embodiment, the surface of the second elastic portion 222 facing the FPC board 3 is attached and fixed to the FPC board 3 by a back adhesive; in other embodiments, the second elastic portion 222 and the FPC board 3 may be attached and fixed by using foam adhesive, and the adhesive tape or the foam adhesive may be attached and fixed, so that the waterproof and fixing effects are effectively achieved, and the assembly relationship between the key main body 2 and the FPC board 3 is simplified.
In the present embodiment, the accommodating chamber 12 includes a placing portion for accommodating the second elastic portion 222 and a sealing portion located on an outer side surface of the second elastic portion 222; when the second elastic portion 222 is placed on the placing portion, the gap between the sealing portion and the second elastic portion 222 is filled with the sealant, so that the side surface of the second elastic portion 222 and the housing 1 are sealed and fixed. After the key body 2, the FPC board 3 and the housing 1 are assembled, the sealant is filled around the outer side of the second elastic portion 222, so that an integrated effect can be achieved, and the sealing and fixing performance and the waterproof performance can be improved.
In this embodiment, the housing 1 is provided with the positioning column 7, the second elastic portion 222 and the FPC board 3 are respectively provided with a positioning hole adapted to the positioning column 7, and the second elastic portion 222 and the FPC board 3 are sequentially sleeved on and fixed to the positioning column 7. The positioning column 7 is used for positioning directly, so that the assembly relation between the pressing key main body 2 and the FPC board 3 is simplified, the matching consistency between the pressing key main body 2 and the metal dome sheet 4 is ensured, the pressing part 21 and the metal dome sheet 4 are easy to find when having poor hand feeling, the matching between the pressing key main body 2 and the metal dome sheet 4 is optimized, and the waterproof performance is enhanced.
In this embodiment, the key pressing structure further includes a reinforcing plate 6, and the reinforcing plate 6 is fixedly mounted on a surface of the FPC board 3 opposite to the snap dome 4. The reinforcing plate 6 is added for improving the strength of the FPC board 3, the reinforcing plate 6 is fixedly installed on one surface of the FPC board 3, which is back to the snap dome 4, so that the strength of the FPC board is increased, and when the pressing key main body 2 is pressed towards the FPC board 3, the reinforcing plate 6 is added, so that the FPC board 3 can be effectively prevented from being damaged.
The utility model discloses a structure is pressed to button, press key main part 2 and FPC board 3 through adopting integrative the making to cooperate, improve press key main part 2 and metal dome 4 cooperation performance, simple structure simplifies the equipment relation to improve the sealing performance of button.
The utility model also provides an equipment, equipment include foretell button mounting structure, and button mounting structure is applied to on the casing 1 of equipment.
The present invention relates to a portable device, such as a portable electronic device, including but not limited to a key mounting structure for a mobile phone, a watch, a portable device, and the like.
As shown in fig. 1 to 4, the key mounting structure includes a key pressing body 2, an FPC board 3, and a snap dome 4; the pressing key main body 2 comprises a pressing part 21 and an elastic part 22 which are integrally formed, one end of the pressing part 21 is connected and fixed at one end of the elastic part 22, the shell 1 is provided with a penetrating key hole 11, and the FPC board 3 is positioned at the inner side of the shell 1 and fixedly arranged corresponding to the key hole 11; the snap dome 4 is fixedly arranged on one side of the FPC board 3 facing the key hole 11 and corresponds to the key hole 11; the key body 2 is inserted into the key hole 11, when the pressing portion 21 is pressed toward the inner side of the housing 1, the pressing portion 21 or the elastic portion 22 transmits the pressing force to the snap piece 4, and when the pressing force is removed, the pressing portion 21 and the elastic portion 22 are restored under the restoring force of the elastic portion 22.
The utility model discloses in, on the equipment of IOT intelligence product was applied to button mounting structure, if be applied to portable electronic equipment, include but not only be limited to the button structure of using such as cell-phone, wrist-watch, portable computer.
A penetrating key hole 11 is formed in a shell 1 of the device, a pressing key main body 2 can be inserted into the key hole 11 in an adaptive manner, the pressing key main body 2 comprises a pressing part 21 and an elastic part 22 which are integrally formed, one end of the pressing part 21 is connected and fixed to one end of the elastic part 22, and an FPC board 3 is located on the inner side of the shell 1 and fixedly arranged corresponding to the key hole 11; the snap dome 4 is fixedly arranged on one side of the FPC board 3 facing the key hole 11 and corresponds to the key hole 11; the main body 2 of the press key is inserted into the key hole 11 in a matching way, when the user applies pressure towards the inner side direction of the shell 1 to the press part 21, the press part 21 transmits the pressure to the snap dome 4, in other embodiments, the pressure can be transmitted to the elastic part 22 by the press part 21, the elastic part 22 transmits the pressure to the snap dome 4 again, the snap dome 4 receives the external force action and then triggers the switch to realize the function of the key switch, and when the user cancels the press force to the press part 21, the press part 21 and the elastic part 22 return to the original position under the restoring force action of the elastic part 22, so that the press part 21 returns to the original state without stress before. The integrally formed pressing key main body 2 does not need to additionally increase a spring to play a spring role, is simple in structure, and simplifies the assembling and mounting relation.
The snap dome (also commonly called metal dome or snap dome) is made of ultrathin (0.05mm-0.1mm in thickness) and superhard (general hardness is HV 480-550) stainless steel materials. Has the advantages of stable contact, strong conductivity, stable rebound and good hand feeling.
In a specific embodiment, the middle part of the pressing key main body 2 is hollowed out, and only the abutting connection position of the pressing key main body 2 abutting against the snap dome 4 is reserved, so that when a user presses the pressing part 21 by applying pressure, the pressing function can be effectively realized; the material of the supporting column for supporting the key main body 2 against the snap dome 4 is the same as that of the pressing part 21, or other metal materials are adopted to be made, the hollow part is made, the weight of the key main body 2 can be reduced, and meanwhile, the material and the cost are saved.
In this embodiment, the pressing portion 21 extends outward toward the center of one end face of the elastic portion 22 to form a protruding abutting column 23, and the elastic portion 22 is provided with a through hole for accommodating the abutting column 23; when a pressing force is applied to the pressing portion 21 in the direction toward the inside of the case 1, the abutting column 23 transmits the pressing force to the snap dome 4.
In this embodiment, the middle of the elastic portion 22 is made into a through hole, the pressing portion 21 extends outward toward the center of one end face of the elastic portion 22 to form a protruding abutting column 23, the abutting column 23 is adapted to penetrate into the through hole, and when a pressure in the direction toward the inner side of the housing 1 is applied to the pressing portion 21, the abutting column 23 transmits the pressure to the snap dome 4. The material of the propping column 23 can be the same as that of the pressing part 21, or made of other metal materials; the abutting column 23 and the pressing part 21 can be manufactured and molded through integral molding, the precision of molded products is improved, and the assembly is simplified.
In this embodiment, the key mounting structure further includes an accommodating cavity 12, the accommodating cavity 12 is a recessed portion formed by extending the inner side wall of the casing 1 along the radial periphery of the key hole 11, and the depth of the accommodating cavity 12 is smaller than the length of the key hole 11; the FPC board 3 and the snap dome 4 are fixedly arranged in the accommodating cavity 12. The accommodating cavity 12 is formed in the inner side of the shell 1 and used for accommodating the FPC board 3 and the snap dome 4, so that the installation volume of the key installation structure can be saved, and the space is saved.
In this embodiment, the elastic portion 22 includes a first elastic portion 221 and a second elastic portion 222, one end of the first elastic portion 221 is fixed to the pressing portion 21, and the other end is fixed to one end of the second elastic portion 222; the first elastic portion 221 is adapted to be located in the key hole 11, the second elastic portion 222 is located in the accommodating cavity, and the second elastic portion 222 is attached to the FPC board 3.
In this embodiment, the second elastic portion 222 is fixedly connected to the first elastic portion 221, and a projection area of the first elastic portion 221 along the key hole 11 direction is smaller than a projection area of the second elastic portion 222, when the first elastic portion 221 is adapted to penetrate into the key hole 11, the second elastic portion 222 is located in the accommodating cavity, one surface of the second elastic portion 222 is attached to the FPC board 3, and the other surface of the second elastic portion 222 abuts against a surface of the key hole 11 facing the hole of the FPC board 3, so that the installation position of the elastic portion 22 is configured to improve the installation accuracy between the elastic portion 22 and the housing 1.
In this embodiment, the pressing portion 21 is formed of plastic or alloy, and the elastic portion 22 is formed of silicone.
In the present embodiment, the key main body 2 is injection-molded by a two-color mold or nano-injection-molded.
The double-color injection molding refers to a molding process that two different materials are injected into the same set of mold, so that the injection molded part is formed by the two materials. Some two materials are different in color, and some materials are different in hardness, so that the assembly performance of the product is improved. In one embodiment, the pressing key main body is injection molded by two materials with different hardness and hardness to realize respective functions, a pressing part made of a first material is injection molded by a plastic mold, then the pressing part is autorotated by a rotating mechanism, and an elastic part made of another material is molded to realize the integrally molded pressing key main body, for example, the pressing part is made of plastic materials such as PP, PE, PVC and the like, and the elastic part is made of silica gel molded by liquid silica gel; in other embodiments, the pressing portion may be formed after the elastic portion is formed, and the pressing key main body may be integrally formed.
Nano injection Molding refers to Nano Molding Technology (NMT), which is a process of combining metal and plastic by Nano Technology, i.e., after Nano treatment is performed on the surface of the metal, plastic is directly injected and molded on the surface of the metal, so that the metal and the plastic can be integrally molded, the structure of a product can be simplified, and the product is lighter, thinner, shorter and smaller. In other embodiments, the pressing portion of the alloy may be used for surface T treatment (nano injection molding pretreatment technology) and clarity, and the elastic portion is injection molded, such as injection molded silicone rubber, to realize an integrally molded pressing key body.
In this embodiment, the key further includes a fixing member 5, the fixing member 5 is fixedly disposed at the bottom of the accommodating cavity 12, and the key pressing body 2 and the housing 1 are fixed by the fixing member 5. In a specific embodiment, the fixing member 4 is made of a back adhesive, and the pressing key main body 2 is attached and fixed to the bottom of the accommodating cavity 12 inside the housing 1 through the back adhesive; in other embodiments, the fixing member 5 can also be attached and fixed by using foam adhesive, and attached and fixed by using back adhesive or foam adhesive, so that the waterproof and fixing effects are effectively realized, and the assembly relation between the pressing key main body 2 and the shell 1 is simplified.
In this embodiment, the surface of the second elastic portion 222 facing the FPC board 3 is attached and fixed to the FPC board 3 by a back adhesive; in other embodiments, the second elastic portion 222 and the FPC board 3 may be attached and fixed by using foam adhesive, and the adhesive tape or the foam adhesive may be attached and fixed, so that the waterproof and fixing effects are effectively achieved, and the assembly relationship between the key main body 2 and the FPC board 3 is simplified.
In the present embodiment, the accommodating chamber 12 includes a placing portion for accommodating the second elastic portion 222 and a sealing portion located on an outer side surface of the second elastic portion 222; when the second elastic portion 222 is placed on the placing portion, the gap between the sealing portion and the second elastic portion 222 is filled with the sealant, so that the side surface of the second elastic portion 222 and the housing 1 are sealed and fixed. After the key body 2, the FPC board 3 and the housing 1 are assembled, the sealant is filled around the outer side of the second elastic portion 222, so that an integrated effect can be achieved, and the sealing and fixing performance and the waterproof performance can be improved.
In this embodiment, the housing 1 is provided with the positioning column 7, the second elastic portion 222 and the FPC board 3 are respectively provided with a positioning hole adapted to the positioning column 7, and the second elastic portion 222 and the FPC board 3 are sequentially sleeved on and fixed to the positioning column 7. The positioning column 7 is used for positioning directly, so that the assembly relation between the pressing key main body 2 and the FPC board 3 is simplified, the matching consistency between the pressing key main body 2 and the metal dome sheet 4 is ensured, the pressing part 21 and the metal dome sheet 4 are easy to find when having poor hand feeling, the matching between the pressing key main body 2 and the metal dome sheet 4 is optimized, and the waterproof performance is enhanced.
In this embodiment, the key pressing structure further includes a reinforcing plate 6, and the reinforcing plate 6 is fixedly mounted on a surface of the FPC board 3 opposite to the snap dome 4. The reinforcing plate 6 is added for improving the strength of the FPC board 3, the reinforcing plate 6 is fixedly installed on one surface of the FPC board 3, which is back to the snap dome 4, so that the strength of the FPC board is increased, and when the pressing key main body 2 is pressed towards the FPC board 3, the reinforcing plate 6 is added, so that the FPC board 3 can be effectively prevented from being damaged.
The utility model provides a button mounting structure and equipment, the button mounting structure that equipment adopted cooperate with FPC board 3 through the press key main part 2 that adopts integrative manufacturing, improves press key main part 2 and metal dome 4 cooperation performance, and simple structure simplifies the equipment relation to improve the sealing performance of button.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.
Claims (10)
1. A key mounting structure is applied to a shell of equipment and is characterized by comprising a key pressing main body, an FPC board and a snap dome;
the pressing key main body comprises a pressing part and an elastic part which are integrally formed, and one end of the pressing part is connected and fixed at one end of the elastic part;
the shell is provided with a through key hole;
the FPC board is positioned on the inner side of the shell and fixedly arranged corresponding to the key hole;
the snap dome is fixedly arranged on one side, facing the key hole, of the FPC board and corresponds to the key hole;
the pressing key body is inserted into the key hole in a matched mode, when pressure towards the inner side direction of the shell is applied to the pressing portion, the pressing portion or the elastic portion transmits the pressure to the snap dome, and after the pressure is removed, the pressing portion and the elastic portion return to the original position under the action of restoring force of the elastic portion.
2. The key mounting structure according to claim 1, wherein the pressing portion has a protruding abutting pillar extending outward toward a center of one end surface of the elastic portion, and the elastic portion is provided with a through hole for accommodating the abutting pillar;
when pressure towards the inner side direction of the shell is applied to the pressing portion, the ejection resisting column transmits the pressure to the snap dome.
3. The key mounting structure according to claim 2, further comprising a receiving cavity, wherein the receiving cavity is a recessed portion formed by extending the inner side wall of the housing along the radial periphery of the key hole, and the depth of the receiving cavity is smaller than the length of the key hole;
the FPC board and the snap dome are fixedly installed in the accommodating cavity.
4. The key mounting structure according to claim 3, wherein the elastic portion includes a first elastic portion and a second elastic portion, one end of the first elastic portion is fixed to the pressing portion, and the other end is fixed to one end of the second elastic portion;
the first elastic part is matched and positioned in the key hole, the second elastic part is positioned in the accommodating cavity, and the second elastic part is attached to the FPC board.
5. The key mounting structure of claim 3 or 4, wherein the pressing portion is formed of plastic or alloy, and the elastic portion is formed of silicone.
6. The key mounting structure according to claim 5, wherein the pressing key main body is injection-molded by a two-color mold or nano-injection-molded.
7. The key mounting structure according to claim 5, further comprising a fixing member, wherein the fixing member is fixedly disposed at a bottom of the accommodating chamber, and the key main body and the housing are fixed by the fixing member.
8. The key mounting structure according to claim 4, wherein the accommodating chamber includes a placement portion for accommodating the second elastic portion and a seal portion located at an outer periphery of the placement portion;
when the second elastic part is placed on the placing part, a gap between the sealing part and the second elastic part is filled through sealant, and the side face of the second elastic part is sealed and fixed with the shell.
9. The key mounting structure of claim 8, wherein the housing is provided with positioning posts, the second elastic portion and the FPC board are respectively provided with positioning holes adapted to the positioning posts, and the second elastic portion and the FPC board are sequentially sleeved on and fixed to the positioning posts.
10. An apparatus, characterized in that the apparatus comprises a key mounting structure according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020630382.7U CN211858475U (en) | 2020-04-23 | 2020-04-23 | Key mounting structure and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020630382.7U CN211858475U (en) | 2020-04-23 | 2020-04-23 | Key mounting structure and equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211858475U true CN211858475U (en) | 2020-11-03 |
Family
ID=73177102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020630382.7U Expired - Fee Related CN211858475U (en) | 2020-04-23 | 2020-04-23 | Key mounting structure and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211858475U (en) |
-
2020
- 2020-04-23 CN CN202020630382.7U patent/CN211858475U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201103 Termination date: 20210423 |