KR102008212B1 - waterproof button assembly of terminal - Google Patents

Abstract

Provided is a waterproof button assembly of a terminal. The waterproof button assembly is provided in a main body to push a switch in a terminal having a PCB having a switch generating an electric signal when pushed on one end. The waterproof button assembly of a terminal comprises: a button unit having a button member arranged on an arranging groove recessed in the main body and an operating shaft extending from the button member to a button hole penetratingly formed on a sealing surface of the placement groove so as to be reciprocally inserted; and a waterproof unit having a fixing cover inserted between the left and right pair of mounting jaws protruding from an inner wall of the main body to which a button hole is exposed, and a sealing member having a tip entering through the arrangement hole penetrated into the fixing cover, having one side surface elastically being in close contact with the fixing cover, and having the other side surface elastically in close contact with the inner wall of the main body to seal between the inner body of the main body and the fixing cover to waterproof. When pressing the button member, the pressing force is transmitted to the switch through the sealing member in contact with one end of the operating shaft to generate an electrical signal.

Description

Waterproof button assembly of terminal

The present invention relates to a waterproof button assembly provided in the terminal, and more particularly, to improve the waterproof reliability to block water from entering the inside from the outside, the waterproof button of the terminal that can maintain a good click feeling when the user button operation To an assembly.

In general, a button of a terminal such as a mobile phone is installed on one side or both sides of the main body of the terminal, and is a kind of button for executing various functions such as power on / off, terminal lock / unlock, volume control, etc. through user manipulation. .

Dome switch and Tact switch are mainly adopted for the buttons of the terminal.

In the dome switch method, a dome sheet incorporating a dome switch is attached to a flexible printed circuit board (FPCB) to form a connection terminal formed on a main circuit board, that is, a row and column terminal pad. Solder connection of the board. The dome switch may be a rubber dome switch or a metal dome switch.

The tact switch method is a method of soldering a tact switch element to a row and column terminal pad formed on a main circuit board. These days, the tact switch uses a surface mount device (SMD) to which surface mount technology (SMT) is applied.

Meanwhile, a sealing member made of a soft material such as rubber is positioned between the button provided on the side surface of the main body of the terminal and the switch provided inside the main body. In addition, the sealing member is located at the mutual coupling portion of the upper case and the lower case constituting the terminal body serves as a waterproof function of the terminal body.

However, since the conventional waterproof button assembly does not have a structure for supporting a flexible sealing member provided between the switch and the switch according to the pressing operation of the button due to excessive deformation of the sealing member occurs due to the pressing of the upper case and the lower case. Failure to provide the tension function required for pressurization and depressurization.

Accordingly, there is a problem in that the reliability of the contact operation of the button switch is deteriorated, such as an error in the contact operation between the button and the switch when the button is pressed.

Accordingly, the present invention is to solve the problems described above, the purpose of which is to improve the waterproof reliability to block the water from entering from the outside, the terminal of the terminal that can maintain a good click feeling when the user button operation To provide a waterproof button assembly.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

As a specific means for achieving the above object, a preferred embodiment of the present invention is provided in the main body so as to press the switch in the terminal having a PCB inside the main body having a switch to generate an electrical signal when pressed; A waterproof button assembly, comprising: a button member disposed in an arrangement groove recessed in the main body, and an operation shaft extending from the button member so as to be reciprocally inserted and disposed in a button hole penetratingly formed on the sealing surface of the arrangement groove. A button unit which is pushed and operated by the user; The front cover is inserted between the left and right pair of mounting jaws protruding from the inner wall of the main body to which the button hole is exposed, and the front end enters through an arrangement hole formed through the fixing cover, and the fixing cover and one side are elastically in close contact with each other. And a waterproof member having a sealing member on the inner wall of the main body that is elastically in close contact with the other side to seal between the inner wall of the main body and the fixing cover to waterproof the sealing member, wherein the sealing member is in contact with one end of the operating shaft when the button member is pressed. It provides a waterproof button assembly of the terminal, characterized in that for transmitting the pressing force through the switch to generate an electrical signal.

Preferably, the actuating shaft may include a stopper ring which is assembled to the engaging groove recessed on the outer circumferential surface and disposed in contact with the inner wall of the main body forming the placement hole.

Preferably, the button portion may include an elastic portion for elastically supporting the button member from the outside between the button member and the placement groove.

More preferably, the elastic portion includes a pair of elastic pieces extending inclined at an angle from a fixed end connected to the inner surface of the button member, the free ends of the pair of elastic pieces are to be in contact with the sealing surface of the placement groove elastically Can be.

More preferably, the elastic portion includes a pair of elastic pieces extending inclined at an angle from a fixed end connected to the sealing surface of the placement groove, the free ends of the pair of elastic pieces are to be in contact with the inner surface of the button member elastically Can be.

More preferably, the elastic portion is provided with an elastic body whose one end is fixed to the inner surface of the button member and the other end is elastically in contact with the sealing surface of the placement groove or one end is elastically in contact with the inner surface of the button member or the other end of the sealing surface. It may be provided with a fixed elastic body.

Preferably, the fixing cover is formed in the opening formed between the first cover body and the left and right both side assembly grooves formed by the left and right pair of mounting jaws, both outer surfaces of the first cover body is assembled and latched; It may include a second cover body which is disposed while the outer surface of the both sides in contact with the left and right pair of assembling jaw and penetrating the placement hole.

Preferably, the sealing member protrudes a predetermined height from the first sealing body corresponding to the outer surface to be in contact with the mounting hole formed in the fixing cover and the one surface in contact with the fixing cover to a certain height, It may include a second sealing body disposed in the fixing cover so that the inner wall and the other surface of the body contact.

 More preferably, the first sealing body may include a contact portion protruding a predetermined height on one surface facing the free end of the working shaft to contact the free end of the working shaft.

More preferably, the second sealing body may include a close protruding jaw that protrudes continuously along the outer edge of the second sealing body so as to increase the adhesion with the inner wall on one surface facing the inner wall of the main body. Can be.

According to the present invention as described above has the following advantages.

By sealing the sealing member combined with the fixed cover to the inner wall of the main body that forms the button hole to which the button is assembled, it allows the reciprocating movement of the operating shaft to generate the electrical signal from the switch through the sealing member when pressing the button member. While sealing the surroundings of the button hole can be sealed, it is possible to improve the waterproof function to block the inflow of water into the terminal.

1 is an exploded perspective view showing a waterproof button assembly of a terminal according to an embodiment of the present invention.
FIG. 2 is an enlarged view of a portion A of FIG. 1.
3 is an assembled state diagram illustrating a waterproof button assembly of a terminal according to an exemplary embodiment of the present invention.
4 is an enlarged view of a portion B of FIG. 2.
5 is a cross-sectional view showing a waterproof button assembly of a terminal according to an embodiment of the present invention.
6 is a perspective view showing a button unit provided in the waterproof button assembly of the terminal according to an embodiment of the present invention.
7 is an overall assembly view showing a waterproof button assembly of a terminal according to an embodiment of the present invention.
8a and 8b is an operational state diagram showing the waterproof button assembly of the terminal according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. However, in describing in detail the structural principle of the preferred embodiment of the present invention, when it is determined that the detailed description of the related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In addition, the same reference numerals are used for parts having similar functions and functions throughout the drawings.

In addition, throughout the specification, when a part is 'connected' to another part, it is not only 'directly connected' but also 'indirectly connected' with another element in between. Include. In addition, the term 'comprising' a certain component means that the component may be further included, without excluding the other component unless specifically stated otherwise.

The waterproof button assembly 100 of the terminal according to the preferred embodiment of the present invention, as shown in Figure 1 to 7, the pressing by the user to generate an electrical signal in the switch 22 provided inside the main body of the terminal The button unit 110 to be operated, and the waterproof unit 120 to block the inflow of water from the outside while sealing between the button unit 110 and the switch 22 in the case.

The main body 10 of the terminal in which the waterproof button assembly 100 is installed may be formed of upper and lower cases assembled together to form an internal space in which components are included together with the PC 20 extending from the main PC part. .

One end of the PC 20 is provided with a switch 22 for generating an electrical signal by the pressing force transmitted during the pressing operation of the button unit 110, the switch 22 is provided inside the main body 10 It may be fixedly installed to face the waterproof portion 120 in a vertical rib provided vertically.

The button unit 110 may include a button member 111 and the operating shaft 112 to perform a pressing operation by the user.

The button member 111 is a substantially hexahedral structure that is disposed in the placement groove 12 formed in the main body so that the outer surface is exposed to the outside, the operation shaft 112 is a predetermined length extending from the other surface of the button member It is a cylindrical member of a predetermined length that is arranged to reciprocate through the button hole 12a formed through the sealing surface that is the bottom surface of the placement groove 12.

The free end of the working shaft penetrates through the button hole 12a and enters the inner space of the main body 10 so as to face one-to-one with the contacts provided in the switch 22 with the waterproof portion therebetween.

At this time, the operation shaft 112 is to prevent the button member from being separated and detached to the outside from the placement groove 12 is formed in the recessed side of any one of the upper and lower cases constituting the main body 10 It may include a stopper ring 114 which is assembled to the engaging groove (112a) recessed on the outer circumferential surface in contact with the inner wall of the body forming the button hole (12a).

Here, the operating shaft 112 is shown and described as having a stopper ring 114 coupled to the engaging groove formed on the outer circumferential surface so that the button unit 110 is not separated from the placement groove 12, but is limited thereto. It may be provided as a pin for preventing the separation is assembled to the working shaft to contact the inner wall of the main body.

In addition, the button unit 110 may include an elastic unit 113 that elastically supports the button member 111 from the outside between the button member 111 and the placement groove 12.

The elastic portion 113 includes a pair of elastic pieces 113b extending inclined at a predetermined angle from the fixed end 113a connected to the inner surface of the button member, the free end 113c of the pair of elastic pieces is the arrangement Although illustrated and described as elastically contacting the sealing surface, which is the bottom surface of the groove 12, but not limited thereto, a pair of elastic pieces extending inclined at an angle from a fixed end connected to the sealing surface, which is the bottom surface of the placement groove. It includes, the free end of the pair of elastic pieces may be in elastic contact with the inner surface of the button member.

In addition, the elastic portion 113 is shown and described as being provided with a pair of elastic pieces arranged in a symmetrical structure on the left and right sides of the operating shaft, but is not limited to this one end is fixed to the inner surface of the button member 111 The other end of the arrangement groove 12 may be provided with an elastic body elastically in contact with the other end, or one end may be elastically in contact with the inner surface of the button member 111 or the other end is fixed to the sealing surface.

Such an elastic body may be formed of a coiled spring member disposed in pairs on both sides of the working shaft 112 or inserted into the working shaft.

The waterproof part 120 includes a fixing cover 120a and a sealing member 120b to block water from flowing into the main body through a button hole in which the button member is disposed and the operating shaft is disposed through. can do.

The fixing cover (120a) is a fixing member that is fixed to the inner wall of the main body is inserted into the left and right ends between the pair of left and right assembly jaw 14 protruding from the inner wall of the main body to which the button ball is exposed.

The fixing cover 120a includes a first cover body 121 in which both outer surfaces of the left and right side assembly grooves 14b formed by the pair of left and right assembly jaws 14 correspond to each other and are arranged to be engaged. The second cover body 122 which is disposed in the opening 14a formed between the left and right pairs of assembly jaws 14 and has both outer surfaces contacting the left and right pairs of assembly jaws 14 and penetrates the placement holes 123. ) May be included.

The second cover body 122 protrudes from one surface of the first cover body 121 to the switch side, and the first cover body 121 has an outer diameter of the second cover body disposed in the opening 14a. It is provided with a relatively larger outer diameter to form a stepped portion between the first cover body and the second cover body.

Here, the left and right pair of mounting jaw 14 has a straight rail structure protruding from the inner wall of the main body through which the button hole is formed so that the first cover body is disposed between the inner wall of the main body 10. While forming the assembling grooves 14b to be formed, the second cover body 122 forms the openings 14a to be assembled and arranged.

The sealing member (120b) is the front end is entered so as to face the switch 22 in one-to-one through the placement hole 123 formed through the fixing cover (120a) and the assembly groove 14b in the state coupled with the fixing cover By the assembling unit provided on the inner wall of the main body by a pair of left and right assembly jaw 14 forming the opening 14a and the fixing cover 120a and one side elastically close to generate a sealing force, The other side is elastically in close contact with the inner wall of the main body 10 forming the button hole to generate a sealing force.

The sealing member 120b is made of a soft material such as a rubber material, which is relatively softer than a fixed cover made of a rigid material having a strength that is difficult to be deformed by external force, thereby elastically contacting the inner wall of the main body and the fixed cover to provide a sealing force. Can be generated.

At this time, the sealing member 120b may be made of an elastic body, but the whole body is not limited thereto, and the sealing member 120b is made of a flexible material that generates a sealing force only by contacting the fixing cover 120a and having an elastic force in a portion that contacts the inner wall of the main body. The remaining portion may be provided with a double material made of a rigid material of the same material as the fixed cover.

The sealing member 120b includes a first sealing body 124 that is inserted into a corresponding contact with an outer surface of the placement hole 123 formed through the second cover body 122 of the fixing cover 120a. The first cover of the fixing cover 120a is formed so that the first sealing body 124 protrudes to a switch side from a surface of the second cover body 122 at a predetermined height, and the inner wall and the other surface of the body 10 are in contact with each other. The second sealing body 125 may be disposed on the sieve 121.

Here, the first sealing member 124 may include a contact portion 124a which is formed to protrude to a certain height on an outer surface that faces one end, which is a free end of the working shaft, to contact the free end of the working shaft.

In this case, the switch is in contact with the end of the operation shaft 112 in the pressing operation of the button 110 to form a contact thickness for transmitting the pressing force to the switch is formed relatively thicker than the thickness of the first sealing body the switch Even when repeated pressing operation of the button for generating an electrical signal of the endurance enough to withstand the external force.

In this case, the contact portion 124a may further include an inner body having a relatively higher strength than the sealing member.

Here, the contact portion 124a is illustrated and described as being protruded from an outer surface of one surface of the first sealing body 124 to be in contact with the free end of the operating shaft, but is not limited thereto and is in contact with the switch 22. It may be formed to protrude on the inner surface of the other surface of the sealing body (124).

In addition, the second sealing body 125 is a close contact protrusion projection 125a which is continuously protruded along the outer edge of the second sealing body to increase the adhesion to the inner wall on one surface facing the inner wall of the main body. ) May be included.

Accordingly, as shown in FIG. 8A, the operating shaft extending from the button member of the button portion is disposed through the button hole, and the end of the operating shaft is in contact with the first sealing member provided in the sealing member of the waterproof portion. When the user presses the button member, the switch generates an electrical signal because the pressing force can be transmitted to the switch facing through the contact portion of the first sealing body in contact with the end of the operating shaft.

In addition, the button hole through which the operation shaft is disposed is hermetically sealed by a sealing member that is in close contact with the inner wall of the main body, thereby completely preventing water entering from the outside through the button hole from entering the main body. You can do it.

On the other hand, the waterproof portion 120 is the both sides of the first and the second cover body facing the left and right pair of mounting jaw 14 is formed in the arc-shaped cross-section so that the operating shaft as the rotating shaft of the left and right pair of assembly jaw And a worker to assemble the sealing member of the waterproof portion so as to be in close contact with the inner portion of the main body in an assembly part formed by a pair of assembly jaws 14 protruding from the inner wall of the main body since the assembly is rotatably assembled between the parts 14. It can be more easily performed to separate from the assembly.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

10: main body
12: placement unit
12a: Button ball
14: assembly jaw
14a: opening
14b: Assembly groove
20: PCB
22: switch
100: waterproof button assembly
110: button part
111: button member
112: working shaft
113: elastic part
114: stoppering
120: waterproof part
120a: Fixed cover
120b: sealing member
121: first cover body
122: second cover body
123: batch ball
124: first sealing body
124a: contact
125: second sealing body
125a: protruding jaw

Claims (11)

In the waterproof button assembly provided in the main body to press the switch in the terminal having a PC in the main body having a switch at one end to generate an electrical signal when it is pressed,
Pushing operation by the user having a button member disposed in the placement groove recessed in the main body, and an operation shaft extending from the button member to a button hole penetratingly formed on the sealing surface of the placement groove to be reciprocally inserted. Button part;
The front cover is inserted between the left and right pair of mounting jaws protruding from the inner wall of the main body to which the button hole is exposed, and the front end enters through an arrangement hole formed through the fixing cover, and the fixing cover and one side are elastically in close contact with each other. And a waterproof member provided with a sealing member in which the other side is elastically in close contact with the inner wall of the main body to seal between the inner wall of the main body and the fixed cover to waterproof.
The sealing member protrudes a first height of the first sealing body from a surface contacting the fixed cover and the first sealing body is inserted into a corresponding contact with the outer surface formed in the through hole formed in the fixing cover, the inner wall of the main body And a second sealing body disposed on the fixing cover to be in contact with the other surface.
The pair of left and right assembly jaw is formed of a straight rail structure protruding from the inner wall of the main body through which the button hole is formed, and forms an assembly groove in which the fixing cover is disposed and an opening in which the fixing cover is assembled.
Water penetrated from the outside through the gap between the button hole and the working shaft by the second sealing body of the sealing member in close contact with the inner wall of the main body so as to enclose the periphery of the button hole exposed to the inner wall of the main body to seal hermetically. To prevent it from entering,
Waterproof button assembly of the terminal, characterized in that for pressing the button member to transmit the pressing force through the sealing member in contact with one end of the operating shaft to generate an electrical signal. The method of claim 1,
The operating shaft is a waterproof button assembly of the terminal comprising a stopper ring is assembled to the engaging groove formed in the recess formed in the outer peripheral surface in contact with the inner wall of the body forming the placement hole. The method of claim 1,
The button unit is a waterproof button assembly of the terminal comprising an elastic portion for elastically supporting the button member from the outside between the button member and the placement groove. The method of claim 3,
The elastic portion includes a pair of elastic pieces extending inclined at an angle from a fixed end connected to the inner surface of the button member, the free end of the pair of elastic pieces is characterized in that the elastic contact with the sealing surface of the placement groove Waterproof button assembly of the terminal. The method of claim 3,
The elastic portion includes a pair of elastic pieces extending inclined at an angle from a fixed end connected to the sealing surface of the placement groove, the free end of the pair of elastic pieces is characterized in that the elastic contact with the inner surface of the button member Waterproof button assembly of the terminal. The method of claim 3,
The elastic part is provided with an elastic body whose one end is fixed to the inner surface of the button member and the other end is elastically in contact with the sealing surface of the placement groove or an elastic body whose one end is elastically contacting the inner surface of the button member or the other end of the sealing surface is fixed. Waterproof button assembly, characterized in that provided with. The method of claim 1,
The fixing cover is disposed in a first cover body having both sides of the outer surface correspondingly assembled in the left and right assembly grooves formed by the pair of left and right assembly jaws and an opening formed between the left and right pairs of assembly jaws. A waterproof button assembly of a terminal, characterized in that it comprises a second cover body formed in both sides of the pair of left and right assembly jaw contact the through-hole. delete The method of claim 1,
The first sealing body is a waterproof button assembly of the terminal comprising a contact portion protruding a predetermined height on one surface facing the free end of the operating shaft in contact with the free end of the operating shaft. The method of claim 1,
The second sealing body may include a close protruding jaw that protrudes continuously along the outer edge of the second sealing body so as to increase adhesion to the inner wall on one surface facing the inner wall of the main body. Waterproof button assembly of the terminal. A terminal having the waterproof button assembly of any one of claims 1 to 7, 9 and 10.

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