CN213025891U

CN213025891U - Side button structure and mobile terminal

Info

Publication number: CN213025891U
Application number: CN202022422437.8U
Authority: CN
Inventors: 周凯
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-04-20
Anticipated expiration: 2030-10-27

Abstract

The disclosure relates to a side key structure and a mobile terminal, wherein the side key structure is arranged on a middle frame of the mobile terminal and comprises a key assembly and a key circuit board, and the key circuit board comprises a plurality of contacts which are respectively positioned on different planes; the key assembly comprises a rotating wheel and an adjusting part, wherein part of a wheel body of the rotating wheel protrudes out of the side edge of the middle frame, and the adjusting part is provided with a triggering part; in an assembly state, the rotating wheel is connected with the adjusting part, the rotating wheel rotates under the action of external torque to drive the adjusting part to move along a first direction, and the triggering part arranged on the adjusting part is used for triggering a contact on a plane vertical to the first direction; under the action of external force along the second direction, the rotating wheel is separated from the adjusting part and moves along the second direction to trigger the contact on the plane vertical to the second direction. The side key structure can increase the strength of the middle frame, is beneficial to the whole sealing of the mobile terminal, and provides various choices for the stacking design of the mobile terminal.

Description

Side button structure and mobile terminal

Technical Field

The present disclosure relates to the field of mobile terminal technologies, and in particular, to a side key structure and a mobile terminal.

Background

With the continuous progress of science and technology, mobile terminals such as mobile phones are not only a communication tool, but also an entertainment tool and an office tool, so that people have stronger dependence on the mobile phones, and more scenes exist in which the mobile terminals such as the mobile phones are used in life.

Generally, a side key structure of a mobile terminal such as a mobile phone generally includes a power key, a volume + key, and a volume-key, where the power key is used to implement functions such as turning on, turning off, and turning off a screen, and the volume + key and the volume-key are used to adjust volume. The side key structure of mainstream all adopts the entity button, specifically, the side key structure equipment is on the cell-phone, and power key, volume + key, volume-key vertical arrangement are in one side of cell-phone, and the center needs to carry out the trompil at corresponding side, guarantees that the partial structure of side key structure is outstanding the center so that press.

A plurality of openings are formed in the side edge of the middle frame, so that the strength of the side key position of the middle frame is weakened, and the sealing effect of the whole mobile terminal is influenced.

SUMMERY OF THE UTILITY MODEL

To overcome the problems in the related art, the present disclosure provides a side key structure and a mobile terminal.

According to a first aspect of the embodiments of the present disclosure, a side key structure is provided, which is disposed in a middle frame of a mobile terminal, and includes a key assembly and a key circuit board, where the key circuit board includes a plurality of contacts respectively located on different planes;

the key assembly comprises a rotating wheel and an adjusting part, wherein part of a wheel body of the rotating wheel protrudes out of the side edge of the middle frame, and the adjusting part is provided with a triggering part;

in an assembly state, the rotating wheel is connected with the adjusting part, the rotating wheel rotates under the action of external torque to drive the adjusting part to move along a first direction, and a triggering part arranged on the adjusting part is used for triggering a contact on a plane vertical to the first direction;

under the action of external force along a second direction, the rotating wheel is separated from the adjusting part, and the rotating wheel moves along the second direction to trigger a contact on a plane vertical to the second direction.

Optionally, the key assembly further includes a transmission assembly, the rotating wheel is engaged with the adjusting portion through the transmission assembly, and the transmission assembly is configured to convert an external torque acting on the rotating wheel into a driving force acting on the adjusting portion in the first direction.

Optionally, the transmission assembly comprises a transmission gear and a rack structure formed on the adjusting part, and the transmission gear is meshed with the rack structure;

the transmission assembly further comprises a transmission shaft, the rotating wheel and the transmission gear are respectively sleeved outside the transmission shaft, the rotating wheel and the transmission gear are arranged in a stacked mode, and the rotating wheel and the transmission gear are respectively fixedly connected with the transmission shaft.

Optionally, the button assembly further comprises a button support, the button support is provided with an installation space penetrating through the button support, the rotating wheel, the transmission shaft and the transmission gear are installed in the installation space, and the transmission shaft is rotatably connected with the button support.

Optionally, the side key structure further includes a fixing support, the fixing support is fixedly connected with a middle frame of the mobile terminal, and the fixing support and the key support form a sliding connection along the second direction.

Optionally, the fixed bracket is provided with a guide post, the guide post penetrates through the key-press bracket, and under the action of an external force along the second direction, the key-press bracket slides relative to the fixed bracket along the guide post.

Optionally, the free end of guide post is provided with the spacing portion of first direction, the regulating part is provided with the spacing portion of second direction, the regulating part is followed when first direction motion, the spacing portion of first direction with the spacing portion cooperation of second direction is right the regulating part leads and spacing.

Optionally, the first guide limiting part comprises a limiting protrusion, the second guide limiting part comprises a limiting groove, the limiting protrusion extends into the limiting groove, and when the adjusting part moves along the first direction, the limiting protrusion slides along the limiting groove.

Optionally, the fixing support is provided with a reset auxiliary column, and the key support is provided with a reset auxiliary hole; alternatively, the first and second electrodes may be,

the fixed support is provided with a reset auxiliary hole, and the key support is provided with a reset auxiliary column;

the reset auxiliary column extends into the reset auxiliary hole, an elastic reset piece is sleeved on the reset auxiliary column, the key support moves towards the fixed support under the action of external force along a second direction, and the elastic reset piece is extruded by the key support;

when the external force along the second direction disappears, the key support moves towards the direction far away from the fixed support under the action of the restoring force of the elastic reset piece.

Optionally, the elastic reset piece is a spring, and an outer diameter of the spring is larger than an inner diameter of the reset auxiliary hole.

Optionally, the two end portions of the adjusting portion along the first direction are provided with the triggering portions, and the triggering portions are fixedly connected with the adjusting portion through interference fit.

Optionally, the key circuit board is a flexible circuit board, the key circuit board is concave, and each side wall of the key circuit board is provided with a contact.

Optionally, the key circuit board and the middle frame of the mobile terminal are positioned and installed in a clamping manner; and/or the presence of a gas in the gas,

the key circuit board is fixedly connected with the middle frame of the mobile terminal in a bonding mode.

According to a second aspect of the embodiments of the present disclosure, a mobile terminal is provided, which includes a middle frame, wherein an accommodating space is formed in the middle frame, and the side key structure is disposed in the accommodating space.

Optionally, a side key installation groove is formed in the side edge of the middle frame, and at least part of the structure of the rotating wheel of the side key structure extends out of the mobile terminal through the side key installation groove.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: in the side key structure, the triggering of the contact on the key circuit board is completed through the matching of the rotating wheel, the adjusting part and the triggering part so as to realize the function corresponding to the contact. Because only partial wheel body of the rotating wheel protrudes out of the side edge of the middle frame, the size of the side edge key opening of the middle frame can be obviously reduced, the strength of the middle frame can be increased, the integral sealing of the mobile terminal is facilitated, and meanwhile, various choices are provided for the stacking design of the mobile terminal.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a partial schematic diagram illustrating a side key structure of a mobile terminal according to an exemplary embodiment.

FIG. 2 is another partial schematic diagram illustrating a side key structure of a mobile terminal according to an example embodiment.

Fig. 3 is a schematic diagram illustrating a motion component of a side key structure of a mobile terminal according to an exemplary embodiment.

Fig. 4 is a schematic structural diagram illustrating an adjustment part of a side key structure of a mobile terminal according to an exemplary embodiment.

Fig. 5 is a schematic structural diagram illustrating a trigger part of a side key structure of a mobile terminal according to an exemplary embodiment.

Fig. 6 is a partial structural view illustrating a fixing bracket of a side key structure of a mobile terminal according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

In the correlation technique, contacts such as power key, volume + key, volume-key on the key circuit board are vertically arranged on one side of the mobile phone, the power key and the volume key are both provided with key openings in the middle frame, and the size of the openings when the vertical row is arranged is large, so that the adverse effect brought by the key openings is mainly as follows: 1) the strength of the middle frame at the side key structure is weakened, for example, when the mobile terminal falls, the position is easily damaged; 2) the sealing effect of the mobile terminal is affected, and the larger the size of the key opening is, the more challenge is caused to the sealing of the mobile terminal. In addition, the form of the side key structure also affects the stacking of the mobile terminal, and the complete machine stacking may not have a new breakthrough because the scheme of the side key structure is solidified and single.

The utility model provides a side button structure, among this side button structure, through the cooperation of rotating wheel, regulating part and trigger part, accomplish the trigger to the contact on the key circuit board to realize the function that the contact corresponds. Because only partial wheel body of the rotating wheel protrudes out of the side edge of the middle frame, the size of the side edge key opening of the middle frame can be obviously reduced, the strength of the middle frame can be increased, the integral sealing of the mobile terminal is facilitated, and meanwhile, various choices are provided for the stacking design of the mobile terminal.

In an exemplary embodiment, a side key structure is provided, as shown in fig. 1 to 5, the side key structure is disposed on a middle frame 6 of a mobile terminal, the side key structure includes a key assembly 1 and a key circuit board 2, the key circuit board 2 includes a plurality of contacts 21 respectively located on different planes, each contact 21 corresponds to a corresponding function, and the corresponding function is implemented by the cooperation of the key assembly 1 and the key circuit board 2. For example, the plurality of contacts 21 include: a power key for implementing functions such as turning on, turning off the screen, etc., a volume + key for implementing turning up the volume, a volume-key for implementing turning down the volume, a mode change key for implementing changing a notification mode (a silent mode, a vibration mode, a ring mode, etc.) of the mobile terminal, etc.

The key assembly 1 comprises a rotating wheel 11 and an adjusting part 12, wherein part of the wheel body of the rotating wheel 11 protrudes out of the side edge of the middle frame 6, and the adjusting part 12 is provided with a triggering part 13. In the assembled state, the rotating wheel 11 is connected with the adjusting part 12, the rotating wheel 11 rotates under the action of external torque, the adjusting part 12 is driven to move along a first direction, and the triggering part 13 arranged on the adjusting part 12 is used for triggering the contact 21 on a plane perpendicular to the first direction (referring to the Y direction shown in fig. 1) so as to realize corresponding functions corresponding to the contact 21 at the position, such as the function of increasing the volume or decreasing the volume. Under the action of an external force in a second direction (refer to the X direction shown in fig. 1), the rotating wheel 11 moves in the second direction, and the rotating wheel 11 can be separated from or contacted with the adjusting part 12 to trigger the contact 21 on a plane perpendicular to the second direction, so as to realize corresponding functions corresponding to the contact 21 at the position, such as a power on/off function, a screen turning-off function, and a screen lighting function.

Based on the above structure, the size of the key opening (not shown in the figure) of the corresponding side of the middle frame 6 does not need to correspond to the plurality of contacts 21, as long as it can satisfy the requirement that the partial rotating wheel 11 protrudes out of the side, thereby reducing the size of the key opening on the side of the middle frame 6, improving the structural strength of the middle frame 6 at the side key structure, and being beneficial to the overall sealing of the mobile terminal. In addition, the plurality of contacts 21 are respectively located on different planes, and various choices are provided for the arrangement mode of the plurality of contacts 21, so that various choices are provided for the specific structural form of the side key structure, and further various choices are provided for the whole machine stacking design of the mobile terminal.

In one example, as shown with reference to fig. 1-5, the key circuit board 2 is provided with three contacts 21, for example: the power key is used for realizing the functions of turning on, turning off the screen and the like, the volume plus key is used for realizing turning up the volume, and the volume plus key is used for realizing turning down the volume. The key circuit board 2 is a flexible circuit board to facilitate its arrangement. The key circuit board 2 is concave, the three contacts 21 are respectively arranged on different side walls of the key circuit board 2, namely, each side wall of the key circuit board 2 is respectively provided with one contact 21, wherein the contacts 21 on two opposite side walls of the key circuit board 2 are respectively a volume + key and a volume-key, the direction corresponding to the connecting line of the volume + key and the volume-key is a first direction, the contact 21 on the other side wall is a power key, and the direction of a straight line perpendicular to the side wall is a second direction.

When the volume needs to be adjusted, the rotating wheel 11 is rotated, at this time, the rotating wheel 11 drives the adjusting part 12 to move along the first direction, and the triggering part 13 of the adjusting part presses the corresponding contact 21, so as to realize the corresponding volume-up function or volume-down function.

When the function of the power key is required to be realized, for example, the function of turning the screen, a force along the second direction is applied to the rotating wheel 11, the rotating wheel 11 moves along the second direction and is separated from the adjusting part 12, and the end part of the rotating wheel 11 presses the corresponding contact 21, so that the function of turning the screen is realized.

In this example, although three contacts 21 are provided, only one key opening needs to be provided on the middle frame 6, and only a part of the wheel body of the rotating wheel 11 needs to protrude from the corresponding side edge of the middle frame 6, so that the size of the key opening on the middle frame 6 can be reduced, the overall structural strength of the middle frame 6 can be improved, and the overall sealing of the mobile terminal is facilitated. In addition, the three contacts 21 are respectively positioned on different planes, so that the traditional arrangement mode of the contacts 21 is changed, various choices are provided for the specific structural form of the side key structure, and various choices are further provided for the whole machine stacking design of the mobile terminal.

In order to ensure the reliable installation of the key circuit board, the key circuit board and a middle frame of the mobile terminal are positioned and installed in a clamping mode; and/or the key circuit board is fixedly connected with the middle frame of the mobile terminal in a bonding mode. The term "and/or" refers to the above clamping and bonding methods, and may be used simultaneously or only one. In addition, besides the two modes, the key circuit board and the middle frame can be fixedly connected through a fastener.

In one example, both snap and adhesive means are used. Referring to fig. 1 to 5, when the key circuit board 2 is mounted, the key circuit board 2 and the middle frame 6 are first positioned and mounted in a clamping manner, and then the key circuit board 2 and the middle frame 6 are fixedly connected in a bonding manner, so that the mounting efficiency of the key circuit board 2 can be improved, and the accuracy of the mounting position of the key circuit board 2 and the connection reliability can be ensured.

For example, for installation convenience, the side wall of the middle frame 6 may be provided with a positioning groove 62, the key circuit board 2 is provided with a positioning card 22, and when the installation is carried out, the positioning card is clamped into the positioning groove, so that the installation accuracy is improved, and meanwhile, the installation efficiency is also improved. And finally, final fixation is realized in a bonding mode, and the reliability of connection is ensured.

In the present application, "the rotating wheel is separated from the adjusting portion" and "the rotating wheel is connected to the adjusting portion" are relative concepts, and the rotating wheel is connected to the adjusting portion in a state where the movement of the rotating wheel can drive the adjusting portion to move together, and the rotating wheel and the adjusting portion include: the rotating wheel is connected with the adjusting part in a direct contact manner, and the rotating wheel is connected with the adjusting part in a non-direct contact manner through other structures; the non-direct contact connection, for example the rotating wheel, is connected to the adjusting part via a transmission assembly.

In an exemplary embodiment, a side key structure is provided, and as shown in fig. 1 to 5, the side key structure further includes a transmission assembly 14, the rotating wheel 11 is engaged with the adjusting portion 12 through the transmission assembly 14, the transmission assembly 14 is configured to convert an external torque acting on the rotating wheel 11 into a driving force acting on the adjusting portion 12 along a first direction, so that under the action of the external torque, the rotating wheel 11 drives the adjusting portion 12 to move along the first direction, so as to drive the triggering portion 13 to move to a position corresponding to the contact 21.

It should be noted that the first direction and the second direction may be perpendicular to each other, or may form other angles. The angle between the first direction and the second direction is related to the specific structure of the transmission assembly. The cooperation of the different angles of first direction and second direction provides multiple structural style for the side button structure, further provides multiple selection for mobile terminal's the design of piling up.

In one example, referring to fig. 1-5, the second direction is a transverse direction (e.g., X direction in fig. 1), and the transmission assembly 14 is configured to convert an external torque acting on the rotating wheel 11 into a driving force acting on the adjusting portion 12 in a vertical direction, i.e., a first direction is a vertical direction (e.g., Y direction in fig. 1), and the first direction and the second direction are perpendicular to each other.

Specifically, the transmission assembly 14 includes a transmission gear 142 and a rack structure 121 formed on the adjustment part 12, and the transmission gear 142 is engaged with the rack structure 121. The transmission assembly 14 further includes a transmission shaft 141, the rotating wheel 11 and the transmission gear 142 are respectively sleeved outside the transmission shaft 141, and the rotating wheel 11 and the transmission gear 142 are stacked to reduce the size of the side mounting structure in the thickness direction of the mobile terminal. The rotating wheel 11 and the transmission gear 142 are fixedly connected with the transmission shaft 141 respectively.

Under the action of external torque, the rotating wheel 11 rotates to drive the transmission shaft 141 to rotate, the transmission shaft 141 rotates to drive the transmission gear 142 to rotate, the transmission gear 142 rotates to drive the rack structure 121 to move vertically, and then the adjusting portion 12 moves vertically to drive the triggering portion 13 to move vertically to trigger the corresponding contact 21.

Under the action of an external force in the second direction, the rotating wheel 11 is separated from the adjusting part 12, and the rotating wheel 11 moves in the second direction to trigger the contact 21 on a plane perpendicular to the second direction.

In one example (the example is not shown in the figures), the second direction is a transverse direction, and the transmission assembly is configured to convert an external torque acting on the rotatable wheel into a driving force acting on the adjustment portion in a direction at 45 degrees to the second direction, i.e. the first direction is at 45 degrees to the second direction. At this time, the plurality of contacts are arranged in a direction at 45 degrees to the second direction.

Specifically, the transmission assembly includes a transmission gear set in which an output gear is engaged with a rack structure, and the rack structure is formed on the adjustment portion. The transmission gear set further comprises an input gear, the input gears of the rotating wheel and the transmission gear set are respectively sleeved outside the transmission shaft, the rotating wheel and the input gear are arranged in a stacked mode, and the rotating wheel and the input gear are respectively fixedly connected with the transmission shaft. The transmission gear set further comprises one or more intermediate transmission gears for transmitting the torque of the input gear to the output gear, and the input gear and the output gear are arranged at an angle of 45 degrees.

Under the action of external torque, the rotating wheel rotates to drive the transmission shaft to rotate, the transmission shaft rotates to drive the input gear to rotate, the input gear drives the output gear to rotate through the intermediate transmission gear, the output gear rotates to drive the rack structure to move along the first direction, and then the adjusting portion moves along the first direction to drive the triggering portion to move along the first direction to trigger the corresponding contact.

Under the action of external force along the second direction, the rotating wheel is separated from the adjusting part and moves along the second direction to trigger the contact on the plane vertical to the second direction.

In an exemplary embodiment, a side key structure is provided, as shown in fig. 1 to 6, which includes a transmission assembly 14, the transmission assembly 14 including a transmission gear 142 and a rack structure 121 formed on the adjustment part 12, the transmission gear 142 being engaged with the rack structure 121. The transmission assembly 14 further includes a transmission shaft 141, the rotating wheel 11 and the transmission gear 142 are respectively sleeved outside the transmission shaft 141, and the rotating wheel 11 and the transmission gear 142 are stacked to reduce the size of the side mounting structure. The rotating wheel 11 and the transmission gear 142 are fixedly connected with the transmission shaft 141 respectively.

The side key structure further comprises a key support 3, the key support 3 is provided with an installation space penetrating through the key support 3, the rotating wheel 11, the transmission shaft 141 and the transmission gear 142 are installed in the installation space, and the transmission shaft 141 is rotatably connected with the key support 3. The key support 3 ensures reliable installation of the rotating wheel 11, the transmission shaft 141 and the transmission gear 142, and ensures the stability of the whole structure of the side key structure.

The side key structure further comprises a fixed support 4, the fixed support 4 is fixedly connected with a middle frame 6 of the mobile terminal, and therefore reliable installation of the side key structure is guaranteed. The fixed support 4 and the key support 3 form a sliding connection along a second direction to realize that: under the action of an external force in the second direction, the rotating wheel 11 moves in the second direction, triggering the contact 21 on the plane perpendicular to the second direction.

The sliding connection has various implementations, for example, by the cooperation of the sliding groove and the sliding block, the guide hole and the guide post, or the sliding groove and the sliding bar.

In one example, referring to fig. 1-6, the fixed bracket 4 is provided with a guiding post 41, the guiding post 41 penetrates through the key holder 3, and under the action of an external force in the second direction, the key holder 3 slides along the guiding post 41 relative to the fixed bracket 4 to realize that the rotating wheel 11 moves in the second direction to trigger the contact 21 on a plane perpendicular to the second direction.

In one example (the example is not shown in the figure), the guide posts are arranged on the key support, and the guide holes are arranged on the fixed support, so that the technical effects similar to those in the above example can be achieved.

It should be noted that the guiding column may be a circular column, a square column, or other column. The guide post passes through the key-press support through the installation space of key-press support, also can pass through the key-press support through setting up the guiding hole.

In one example, referring to fig. 1-6, the guiding column 41 is a square column, the key holder 3 is provided with a mating surface 31 that mates with the adjacent side surface of the guiding column 41, the mating surface 31 is used to form part of the inner side surface of the installation space, and the fixing holder 4 and the key holder 3 are better ensured to slide relatively along the axial direction of the guiding column 41 by the mating of the mating surface 31 and the guiding column 41.

In an example (this example is not shown in the figure), the guide post is a circular post, the key support is provided with a guide hole matched with the guide post, and through the matching of the guide post and the guide hole, the relative sliding between the fixing support and the key along the axial direction of the guide post is better determined, so as to achieve better guiding effect.

In an exemplary embodiment, a side key structure is provided, as shown in fig. 1 to 6, in the side key structure, a first guiding and limiting portion is provided at a free end of the guiding column 41, a second guiding and limiting portion is provided on the adjusting portion 12, and when the adjusting portion 12 moves along the first direction, the first guiding and limiting portion cooperates with the second guiding and limiting portion to guide and limit the adjusting portion 12, so as to ensure that the adjusting portion 12 moves strictly along the first direction, and improve the accuracy of realizing corresponding functions through the side key structure.

Wherein, the spacing portion of first direction and the spacing portion of second direction, one of the two includes spacing rib, and the two another includes the spacing groove, and spacing rib card is gone into in the spacing groove to the realization is to the direction and spacing of regulating part.

In one example, referring to fig. 1 to 6, the first guiding and limiting part includes a limiting rib 411, the second guiding and limiting part includes a limiting groove 122, the limiting groove 122 is a dovetail groove, the limiting rib 411 is matched with the dovetail groove, and the limiting rib 411 extends into the dovetail groove. Through the cooperation of spacing rib 411 and dovetail, can ensure that regulating part 12 is along strict along the first direction motion, can avoid regulating part 12 to drop from key support 3 again better, guarantee the use of this side button structure better.

In one example (this example is not shown in the figure), the first guiding and limiting part comprises a limiting groove which is a dovetail groove, and the second guiding and limiting part comprises a limiting rib which is matched with the dovetail groove and extends into the dovetail groove. The structure can ensure that the adjusting part moves along the first direction strictly, and can better avoid the adjusting part from falling off from the key support, thereby better ensuring the use of the side key structure.

In an exemplary embodiment, a side key structure is provided, as shown in fig. 1 to 6, in which two end portions of the adjusting portion 12 in the first direction are provided with triggering portions 13, and the triggering portions 13 are elastic members, such as rubber members or springs with good elasticity.

The rotating wheel 11 rotates under the action of external torque, the adjusting part 12 is driven to move along a first direction, the adjusting part 12 drives the triggering part 13 to move, and the triggering part 13 presses the corresponding contact 21 to trigger the corresponding function of the contact 21. When the trigger 13 presses the contact 21, the trigger 13 is elastically deformed, and when the torque applied to the rotating wheel 11 is removed, the trigger 13 drives the adjusting part 12 to move in a direction away from the contact 21 along the first direction under the restoring force generated by the elastic deformation, and the adjusting part is restored to the initial state.

After the trigger unit 13 triggers the contact 21, a torque in the opposite direction to the torque may be applied to the rotating wheel 11, so that the adjustment unit 12 returns to the original state. Alternatively, the contact 21 corresponding to the trigger 13 includes an elastic structure, and the reset of the adjustment portion 12 is realized by the elastic structure of the contact 21.

The triggering portion 13 and the adjusting portion 12 may be an integrally formed structure, or may be a separate fixed connection structure.

For example, the trigger part 13 is fixedly connected to the adjustment part 12 by interference fit.

In one example, referring to fig. 1 to 6, the triggering portion 13 includes a connecting protrusion 131 facing the adjusting portion 12, the adjusting portion 12 includes a matching groove (not shown) matching with the connecting protrusion 131, and the connecting protrusion 131 is snapped into the matching groove and is in interference fit with the matching groove to realize reliable connection of the triggering portion 13 and the adjusting portion 12.

In one example, referring to fig. 1-6, the second guide limit portion includes a limit groove 122, and a dimension of the limit groove 122 in the first direction is the same as a dimension of the adjustment portion 12 in the first direction, that is, the limit groove 122 penetrates the adjustment portion 12 in the first direction. The trigger part 13 is provided with a connecting lug 131 which can realize interference fit with the limiting groove 122, the connecting lug 131 is clamped into the limiting groove 122 along the first direction, interference fit connection between the trigger part 13 and the adjusting part 12 is realized, and reliability of connection between the trigger part 13 and the adjusting part 12 is ensured.

For another example, the trigger portion is fixedly connected to the adjustment portion by means of an adhesive, or the trigger portion is fixedly connected to the adjustment portion by means of a fastener, such as a screw or a bolt.

In an exemplary embodiment, a side key structure is provided, as shown in fig. 1 to 6, in which a fixing support 4 and a key support 3 are provided with a reset auxiliary post 42 on one of them and a reset auxiliary hole 32 on the other of them, the reset auxiliary post 42 extends into the reset auxiliary hole 32, an elastic reset member 5 is sleeved on the reset auxiliary post 42, and the elastic reset member 5 is, for example, a spring, an elastic rubber member, or the like. Under the action of external force along the second direction, the key support 3 moves towards the fixed support 4, and the key support 3 extrudes the elastic resetting piece 5; after the external force in the second reverse direction disappears, the key holder 3 moves in the direction away from the fixed holder 4 under the restoring force of the elastic restoring member 5, and then restores to the original position.

In one example, referring to fig. 1-6, the fixing support 4 is provided with a reset auxiliary post 42, the key support 3 is provided with a reset auxiliary hole 32, the reset auxiliary post 42 is sleeved with a spring, the outer diameter of the spring is larger than the inner diameter of the reset auxiliary hole 32, and the reset auxiliary post 42 partially extends into the reset auxiliary hole 32.

When the function corresponding to the contact 21 needs to be realized through the side key (for example, during the shutdown function), an external force along the second direction is applied to the rotating wheel 11, the rotating wheel 11 and the key holder 3 move towards the fixed holder 4, and the end of the rotating wheel 11 presses the corresponding contact 21, so that the corresponding function is realized. Meanwhile, the key holder 3 presses the spring, the spring generates elastic deformation, and after the external force is cancelled, the key holder 3 moves towards the direction far away from the fixed holder 4 under the action of the restoring force of the spring and restores to the original position, so that the operation (such as shutdown) of the corresponding function is finished.

It should be noted that the guide post and the auxiliary reset post related to the above embodiments may share the same cylindrical structure, and correspondingly, the guide hole and the auxiliary reset hole also share the same hole structure.

The disclosure also provides a mobile terminal, for example, a mobile phone, a notebook computer, a tablet computer, a POS machine or a vehicle-mounted computer. Referring to fig. 1-6, the mobile terminal includes a middle frame 6, where the middle frame 6 forms an accommodating space, and the accommodating space is provided with the side key structure as described above.

Side key mounting groove 61 has been seted up to the side of center 6, and the side key mounting groove 61 is passed through to at least partial structure of the rotatory wheel 11 of side key structure and is stretched out to the mobile terminal outside to in the realization press the operation.

In the mobile terminal, the contact 21 on the key circuit board 2 is triggered through the cooperation of the rotating wheel 11, the adjusting part 12 and the triggering part 13, so as to realize the corresponding function of the contact 21. Because only part of the wheel body of the rotating wheel 11 protrudes out of the side edge of the middle frame 6, the size of the side edge key opening of the middle frame 6 can be obviously reduced, the strength of the middle frame 6 can be increased, the whole sealing of the mobile terminal is facilitated, and meanwhile, various choices are provided for the stacking design of the mobile terminal.

In one example, a mobile terminal is provided, as shown in fig. 1 to 6, in which an accommodating space is provided, and the side key structure is installed in the accommodating space. The side button structure is connected to the middle frame 6 by a fastener, for example, the fixing bracket 4 of the side button structure is fixed to the middle frame 6 by a pair of screws. The key circuit board 2 is a flexible circuit board (FPC) and is arranged in a C shape, the C shape belongs to a concave shape, the key circuit board 2 is installed on the middle frame 6 through a hanging table (equivalent to a matching structure formed by a positioning card 22 and a positioning groove 62), the back surface of the key circuit board 2 (the surface without the contact 21 of the key circuit board 2 is indicated by the back surface) is fixedly bonded with the middle frame 6 through back adhesive, and other structures of the side key structure are installed after the key circuit board 2 is installed.

The side key structure mainly comprises a support part, a moving assembly and a rack moving assembly, wherein the support part comprises a fixed support 4, two ends of the fixed support 4 are installed on the middle frame 6 through screws, two ends of the fixed support 4 are respectively provided with a reset auxiliary column 42, each reset auxiliary column 42 is sleeved with a spring, the moving assembly comprises a sliding block (equivalent to the key support 3), a transmission gear 142, a rotating wheel 11 and a transmission shaft 141, the transmission gear 142 and the rotating wheel 11 are installed on the sliding block through the transmission shaft 141, and the transmission gear 142 and the rotating wheel 11 can rotate synchronously around a shaft. The rack motion assembly is composed of a rack (equivalent to the adjusting part 12 provided with the rack structure 121) and a pair of force transmission blocks (equivalent to the triggering part 13), the rack is installed on the fixed support 4 through a dovetail-shaped key groove (dovetail groove), the rack can do linear motion along the extending direction (first direction) of the key groove, and the rack structure 121 used for achieving meshing connection is arranged at part of the position of the rack and used for achieving meshing connection with a transmission gear 142 in the motion assembly. The force transmission blocks are arranged at the two ends of the rack in an interference fit mode. The support part, the moving assembly and the rack moving assembly are sequentially installed, the moving assembly is installed on the support part, then the rack moving assembly is installed, and finally the support part and the middle frame 6 are fixed through screws.

The fixed support 4 and the sliding block are guided to slide through a group of guide posts 41, and a pair of springs are arranged at two ends of the fixed support 4 and are respectively sleeved on the guide posts 41 for resetting the moving assembly. Specifically, when a lateral force (force in the X direction shown in fig. 1) is applied to the rotating wheel 11, the moving assembly will move linearly in the lateral direction (second direction) under the guiding action of the guiding post 41, and the spring is in a compressed state, and when the external force is removed, the moving assembly is reset under the restoring force of the spring.

The rack motion assembly is mounted on the fixed support 4 so that it does not follow the motion assembly. It should be noted that in the initial state, the rack gear is engaged with the transmission gear 142, and after the moving assembly moves in the second direction, the transmission gear 142 is disengaged from the rack gear. When the transverse force is not applied to the rotating wheel 11 and the moving assembly is reset, the transmission gear 142 and the rack are engaged again. At this time, the rotating wheel 11 can be rotated by applying a torque thereto, the transmission gear 142 rotates therewith, and the rack moves linearly in the first direction under the driving of the transmission gear 142.

In this example, three contacts 21 are disposed on the key circuit board 2, and are respectively located on three inner side walls of the concave key circuit board 2, that is, one contact 21 is disposed on each side wall of the key circuit board 2, where the contacts 21 on two opposite side walls of the key circuit board 2 are respectively a volume + key and a volume-key, a direction corresponding to a connection line of the volume + key and the volume-key is a first direction, the contact 21 on the other side wall is a power key, and a direction in which a straight line perpendicular to the side wall is located is a second direction.

When a force in the X direction shown in fig. 1 is applied to the rotating wheel 11, the moving assembly moves in the direction of the force, the transmission gear 142 and the rack are switched from the initial meshing state to the disengaged state, and the power key is pressed by pressing the rotating wheel 11, so that the power key operates to realize a corresponding function. In this process, since the transmission gear 142 and the rack are disengaged, the volume + key or the volume-key is not pressed by rotating the rotary wheel 11 by mistake, and the reliability of preventing the accidental touch is improved. When the external force is removed, the moving assembly is reset under the action of the spring, and the transmission gear 142 and the rack are restored to be in a meshed state.

Referring to fig. 1, when the rotating wheel 11 is rotated clockwise, the transmission gear 142 is driven by the rotating wheel 11 to perform synchronous rotational motion, and the rack is driven by the gear to perform downward linear motion (i.e., the rack moves in a first direction). Under the action of the force transfer block, the volume-key is pressed to realize the function of reducing the volume. Similarly, when the rotating wheel 11 rotates counterclockwise, the volume-key can be touched to realize the function of increasing the volume.

In summary, the power key can be triggered by applying a lateral force to the rotating wheel 11 to realize the function corresponding to the power key, and the volume-key or volume + key can be triggered by rotating the rotating wheel 11 clockwise or counterclockwise to realize the function of turning down the volume or turning up the volume.

The mobile terminal at least comprises the following effects:

first, the key circuit board is arranged in a concave shape, the length dimension along the first direction can be set to be smaller, which is beneficial to reducing the dimension of a side frame installation groove on the middle frame, improving the overall structural strength of the middle frame and being beneficial to sealing between the middle frame and a battery cover of the mobile terminal.

Secondly, the concave arrangement form of the key circuit board in the side key structure provides a new scheme for the whole machine stacking, and the first direction and the second direction have multiple matching forms, so that more new choices are provided for the whole machine stacking of the mobile terminal.

Thirdly, in the side key structure, the power key, the volume + key and the volume-key realize separate work, and when the rotating wheel is operated, only one function corresponding to the contact point can be realized, and the phenomenon of mistaken contact can not occur.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A side key structure is arranged on a middle frame of a mobile terminal and is characterized in that the key structure comprises a key assembly and a key circuit board, wherein the key circuit board comprises a plurality of contacts which are respectively positioned on different planes;

2. The edge key structure of claim 1, wherein the key assembly further comprises a transmission assembly, the rotation wheel is engaged with the adjustment portion through the transmission assembly, and the transmission assembly is configured to convert an external torque acting on the rotation wheel into a driving force acting on the adjustment portion in the first direction.

3. The side button structure of claim 2, wherein the transmission assembly comprises a transmission gear and a rack structure formed on the adjustment portion, the transmission gear being engaged with the rack structure;

4. The side button structure of claim 3, wherein the button assembly further comprises a button support, the button support is provided with an installation space penetrating through the button support, the rotating wheel, the transmission shaft and the transmission gear are installed in the installation space, and the transmission shaft is rotatably connected with the button support.

5. The side key structure of claim 4, further comprising a fixing bracket, wherein the fixing bracket is fixedly connected to a middle frame of a mobile terminal, and the fixing bracket and the key bracket form a sliding connection along the second direction.

6. The side key structure of claim 5, wherein the fixing frame is provided with a guiding post, the guiding post penetrates through the key frame, and the key frame slides along the guiding post relative to the fixing frame under the action of an external force along the second direction.

7. The side key structure according to claim 6, wherein a first guiding and limiting portion is disposed at a free end of the guiding post, and a second guiding and limiting portion is disposed at the adjusting portion, and when the adjusting portion moves along the first direction, the first guiding and limiting portion is matched with the second guiding and limiting portion to guide and limit the adjusting portion.

8. The edge key structure of claim 7, wherein the first guiding and limiting portion comprises a limiting protrusion, the second guiding and limiting portion comprises a limiting groove, the limiting protrusion extends into the limiting groove, and the limiting protrusion slides along the limiting groove when the adjusting portion moves along the first direction.

9. The side key structure of claim 5, wherein the fixing bracket is provided with a reset auxiliary post, and the key bracket is provided with a reset auxiliary hole; alternatively, the first and second electrodes may be,

10. The side key structure of claim 9, wherein said resilient return member is a spring having an outer diameter greater than an inner diameter of said return assist aperture.

11. The side key structure according to any one of claims 1 to 10, wherein the trigger portions are provided at both ends of the adjustment portion in the first direction, and the trigger portions are fixedly connected to the adjustment portion by interference fit.

12. A side key structure according to any one of claims 1 to 10, wherein said key circuit board is a flexible circuit board, said key circuit board is concave, and each side wall of said key circuit board is provided with a contact.

13. The side key structure of any one of claims 1 to 10, wherein the key circuit board is positioned and mounted with the middle frame of the mobile terminal in a clamping manner; and/or the presence of a gas in the gas,

14. A mobile terminal, comprising a middle frame, wherein the middle frame is formed with a receiving space, and the receiving space is provided with the side key structure according to any one of claims 1 to 13.

15. The mobile terminal of claim 14, wherein a side key installation groove is formed in a side edge of the middle frame, and at least a part of the rotating wheel of the side key structure extends out of the mobile terminal through the side key installation groove.