WO2009145558A2 - Structure élastique pour téléphone portable de type coulissant - Google Patents

Structure élastique pour téléphone portable de type coulissant Download PDF

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Publication number
WO2009145558A2
WO2009145558A2 PCT/KR2009/002803 KR2009002803W WO2009145558A2 WO 2009145558 A2 WO2009145558 A2 WO 2009145558A2 KR 2009002803 W KR2009002803 W KR 2009002803W WO 2009145558 A2 WO2009145558 A2 WO 2009145558A2
Authority
WO
WIPO (PCT)
Prior art keywords
operating rod
assembly
movable
rod
mobile phone
Prior art date
Application number
PCT/KR2009/002803
Other languages
English (en)
Korean (ko)
Other versions
WO2009145558A3 (fr
Inventor
추종철
Original Assignee
Choo Jong Chul
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Choo Jong Chul filed Critical Choo Jong Chul
Publication of WO2009145558A2 publication Critical patent/WO2009145558A2/fr
Publication of WO2009145558A3 publication Critical patent/WO2009145558A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0235—Slidable or telescopic telephones, i.e. with a relative translation movement of the body parts; Telephones using a combination of translation and other relative motions of the body parts
    • H04M1/0237—Sliding mechanism with one degree of freedom

Definitions

  • the present invention relates to an elastic structure for a slide-type mobile phone, and more particularly, the movable slider of the upper unit with a display screen or the like moves linearly with respect to the fixed slider of the lower unit with a keypad or the like. Accordingly, the present invention relates to an elastic structure for a slide-type mobile phone, which allows the overall length to be operated to be long or short, but is particularly suitable for applying to a thin slim mobile phone.
  • the slide-type mobile phone is made to adjust its length depending on whether the user uses the mobile phone. That is, the slide-type mobile phone is configured such that the overall length of the mobile phone is adjustable while the upper unit located at the top operates in the longitudinal direction of the mobile phone with respect to the lower unit located at the bottom.
  • a fixed slider is mounted on a lower unit provided with a keypad and a voice transmitter
  • a movable slider is mounted on an upper unit provided with a display screen and a voice receiver.
  • the mobile phone user when the mobile phone user applies a force higher than a certain level to the movable slider, it is operated, and the elastic structure for a mobile phone type slide for allowing the movable slider to move smoothly on the fixed slider by rail means.
  • the space between the fixed slider and the movable slider is provided.
  • the movable slider of the upper unit is moved to the lower part by the operation of the elastic structure. With respect to the fixed slider of the lower unit located, it is linearly slid in the direction in which the length thereof extends. On the contrary, if a force is applied to the upper unit of the slide-type mobile phone having a long length in a direction in which the length is shortened in relation to the lower unit, the upper unit is slid in a state in which the upper unit is stacked on the lower unit by the operation of the elastic structure. The overall length of the phone will be reduced.
  • the elastic structure for a mobile phone slide as described above is made in accordance with the design of the mobile phone, most of such elastic structure is generally included an elastic body such as a compression spring.
  • the present invention was devised in view of the above-described circumstances of the prior art, and a compression spring for providing elastic force and restoring force to the movable slider of the slide-type mobile phone and a body for maintaining the state in which the compression spring is coupled It is an object of the present invention to provide an elastic structure for a slide-type mobile phone that enables the design of a slimmer mobile phone by reducing the thickness of the plate.
  • Another object of the present invention is to simplify the assembly state of the parts assembled between the fixed slider and the movable slider of the sliding mobile phone, the elastic structure for the mobile phone to reduce the cost and time according to the manufacturing
  • the purpose is to provide.
  • another object of the present invention is to provide an elastic structure for a slide-type mobile phone to reduce the overall weight of the mobile phone by reducing the weight of the entire components mounted between the fixed slider and the movable slider of the mobile phone.
  • the present invention configured to achieve the above object is as follows. That is, the present invention provides a fixed slider for a mobile phone elastic structure which is installed between a fixed position on the fixed slider and a fixed position on the movable slider so that the movable slider can be linearly moved within a predetermined range with respect to the fixed slider of the sliding mobile phone.
  • a fixed side actuating rod having a hinge shaft rotatably coupled to the body and protruding from the body toward a side mounted to the fixed slider, while one end of the body has a plurality of spring assembly pins protruding from the fork;
  • a movable side operating rod having a hinge shaft rotatably coupled to the movable slider to be protruded to the body toward the side mounted to the movable slider, while one end of the body has a plurality of spring assembly pins protruding from the fork;
  • a coil-shaped compression spring installed to surround each spring assembly pin; Fixed side actuating rod and movable side actuating rod are assembled in opposite directions at regular intervals to rotate at the same time, and form a rectangular plate shape with square assembly spaces arranged in parallel.
  • a body plate having a pin hole into which an end portion of a spring assembly pin is fitted, on which an assembly portion to which a rod or a movable side actuating rod is assembled is formed, and on which a side facing the assembly portion is formed;
  • Guide rails are formed on the inner side of the assembly space, respectively, while guides are formed on the sides of the fixed side actuating rod and the movable side actuating rod in the direction corresponding to the guide rail, so that the actuating rods are assembled to the body plate.
  • the operating rod assembly means for guiding the linear movement of the operating rod on the body plate; And a detachment preventing means protruding from one side of the fixed side working rod and the movable side working rod to prevent the two working rods from being separated from the assembly space by the elastic force of the compression spring.
  • assembly space in the slide-type mobile phone elastic structure according to the invention may be made of a structure in which the front and rear of the body plate penetrated each other.
  • the assembly space in the slide-type mobile phone elastic structure according to the invention can be formed through so that the front end of the spring assembly pin is exposed to the outside of the body plate.
  • a predetermined section of the end portion of each spring assembly pin in the slide-type mobile phone elastic structure according to the present invention may be made in the form of a sharp needle.
  • each spring assembly pin in the slide-type mobile phone elastic structure according to the present invention may be formed thinner than the inner section on the basis of the middle portion.
  • the thickness of the body plate in the slide-type mobile phone elastic structure according to the present invention may be made of a thickness within the range of 1 ⁇ 0.5 mm.
  • the spring guide protrusion for maintaining the mounting position of the compression spring protruding on one side of the assembly space where both ends of each compression spring is positioned and one side of the actuating rod in the elastic structure for a mobile phone slide according to the invention Can be.
  • the present invention can provide an elastic structure having a thickness of 1 mm or less mounted between a fixed slider provided with a voice transmitter of a slide-type mobile phone and a movable slider provided with a voice receiver such that the movable slider for the fixed slider is slidably moved in a linear direction. Therefore, there is a huge advantage that allows the production of a slimmer sliding mobile phone.
  • the means for assembling each other constituting the elastic structure for the mobile phone-type mobile phone according to the present invention and the means for preventing the parts from being separated from each other is formed in the parts themselves to reduce the overall number of parts produced The cost and assembly process can be reduced.
  • the elastic structure for a slide-type mobile phone according to the present invention has an effect that can simplify the assembling process of the mobile phone according to the small and thin unit components.
  • FIG. 1 is a perspective view of an elastic structure according to the present invention.
  • Figure 2 is an exploded perspective view of the elastic structure according to the present invention.
  • FIG. 3 is a front view of the actuating rod according to the present invention.
  • FIG. 4 is a plan view of an actuating rod according to the invention.
  • FIG. 5 is a plan sectional view of a body plate according to the invention.
  • FIG. 6 is a side cross-sectional view of a body plate according to the present invention.
  • Figure 7 is a side cross-sectional view of the elastic structure according to the present invention.
  • FIG. 8 is a view of a closed state of the mobile phone.
  • FIG. 9 is a view showing a state in which the elastic structure according to the present invention is operating.
  • FIG. 10 is a view of the open state of the mobile phone.
  • FIG. 1 is a perspective view of the elastic structure according to the invention
  • Figure 2 is an exploded perspective view of the elastic structure according to the invention
  • Figure 3 is a front view of the operating rod according to the invention
  • Figure 4 is a plan view of the operating rod according to the invention
  • 5 is a cross-sectional plan view of the body plate according to the present invention
  • Figure 6 is a side cross-sectional view of the body plate according to the present invention
  • Figure 7 is a side cross-sectional view of the elastic structure according to the present invention
  • Figures 8 to 10 are elastic according to the present invention The figure shows a state in which the structure is mounted and operated on the slide-type mobile phone.
  • the elastic structure 100 shown in FIG. 1 is mounted on a slide-type mobile phone in which the overall length of the mobile phone is lengthened and shortened as the upper unit of the mobile phone is moved within a predetermined stroke relative to the lower unit of the mobile phone held by the user's hand.
  • the lower unit of the mobile phone is provided with a key pad and a voice transmitter
  • the upper unit is provided with a display screen, a voice receiver and the like can be configured as in the case of a conventional slide-type mobile phone.
  • the fixed slider is mounted on the upper surface of the lower unit while the movable slider is mounted on the lower surface of the upper unit so that the upper cell of the cellular phone is linearly moved with respect to the lower unit so that the cellular phone is opened or closed.
  • the elastic structure 100 is a pair for assembling each of the fixed slider 20 and the movable slider 30 of the slide-type mobile phone 10 on both sides of the body plate 400 as shown in FIG. It includes a working spring (200,300) and the compression spring (500) for providing an elastic force to each of the working rod (200,300).
  • the fixed side operation rod 200 mounted on the fixed slider 20 side of the mobile phone and the movable side operation rod 300 mounted on the movable slider 30 side have the same structure, and the body plate 400 Only the directions in which they are assembled are different.
  • the bodies 210 and 310 of the fixed side actuating rod 200 and the movable side actuating rod 300 are in the form of a thin plate having a length longer than the width, while one side of the bodies 210 and 310 (fixed side actuation based on the drawings shown) Hinge shafts 220 and 320 are rotatably formed to be rotatably coupled to the fixed slider 20 and the movable slider 30 of the mobile phone, respectively, outside the upper surface of the rod and the lower surface of the movable side working rod. .
  • annular grooves 222 and 322 for coupling with the fixed slider and the movable slider of the mobile phone may be formed in the middle portion of the hinge shafts 220 and 320.
  • a plurality of spring assembly pins 230 and 330 protrude from the fixed side operation rod 200 and the movable side operation rod 300 in a fork shape.
  • the length of the spring assembly pin (230,330) is formed to a length of 1.5 to 2 times the length of the body (210,310).
  • a predetermined section of the end of the spring assembly pins 230 and 330 is pointed like a needle, in order to be advantageous in terms of bonding with the body plate 400.
  • the spring assembly pins 230 and 330 are formed to have different thicknesses between the inner sections 232 and 332 and the outer sections 234 and 334 based on the middle portion thereof in the longitudinal direction. That is, the thickness of the outer sections 234, 334 is thinner than the thickness of the inner sections 232, 332, which is the spring assembly pins 230, 330 through the pin holes 440 formed through the body plate 400 made of a thin thickness
  • the thickness of the outer sections 234 and 334 which is a section into which the pin hole 440 is inserted when the tip is inserted, is relatively thin, while the inner sections 232 and 332, which are sections not inserted into the pin hole 440, have overall rigidity. It is formed relatively thick to be maintained.
  • the diameter of the outer sections 234 and 334 in which the pin plate 440 is inserted Silver shall be designed to be at least 0.5 mm, taking into account assembly tolerances, etc.
  • the spring assembly pins 230 and 330 are made to be too thin as a whole because they are made long as shown in the drawing, the springs of the operating rods 200 and 300 according to the present invention have to be disadvantageous in terms of rigidity.
  • the assembly pins 230 and 330 are designed to have a relatively thin thickness compared to a section not inserted into the pin hole 440.
  • the bodies 210 and 310 of the fixed side working rod 200 and the movable side working rod 300 are thinner than the thickness of the body plate 400 described above. That is, as shown in FIG. 7, the thickness of the body plate 400 may be slightly thicker than that of the body plate 400. For example, when the body plate 400 is designed to have a thickness of 0.7 mm, the body thicknesses of the working rods 200 and 300 may be designed to be about 0.45 mm.
  • the above-described compression spring 500 is applied to the outer diameter is the same as the thickness of the body plate 400 or less than the thickness of the body plate 400 is applied.
  • the body plate 400 rotates the fixed side operating rod 200 and the movable side operating rod 300 at the same time even if the fixed side operating rod 200 and the movable side operating rod 300 are assembled in opposite directions at regular intervals. It is the medium that makes it work.
  • the body plate 400 is formed of a structure in which two assembly spaces 410 penetrate side by side in a vertical plate side by side as shown in Figure 5, one assembly space 410 is the fixed side operation described above
  • the rod 200 is a space in which the assembly is operated, and the other assembly space 410 is a space in which the movable side operating rod 300 described above is assembled and operated.
  • One side of the assembly portion 420 of the open form toward the side is formed 410. That is, the assembly unit 420 is formed on the side where the body (210,310) of the fixed side operating rod 200 and the movable side operating rod 300 of the edge portion surrounding the assembly space 410 is formed, the body ( Sides on which the hinge shafts 220 and 320 protruding from one side of the 210 and 310 are positioned are formed in an open structure while the opposite sides are formed in a closed structure.
  • the assembling unit 420 to which the body 210 of the fixed side working rod 200 is assembled, is opened at the bottom while the assembly part of the body 310 of the movable side working rod 300 is assembled. Since the 420 has an open upper side, one surface of the fixed side actuating rod 200 assembled to the assembly portion 420 of the body plate 400 and the body 210 and 310 of the movable side actuating rod 300 is exposed to the outside. Will be.
  • the body thickness of the fixed side operation rod 200 and the movable side operation rod 300 assembled to the assembly portion 420 is a fixed side forming a closed side of the assembly portion 420 in the thickness of the body plate 400
  • the stopper 422 is formed by subtracting the thickness of the stopper 422
  • the surfaces of the fixed side actuating rod 200 and the body 210 and 310 of the movable side actuating rod 300 are the same as those of the corresponding side surface of the body plate 400. That's cool.
  • a portion of the body of the actuating rods 200 and 300 is more than the body plate 400.
  • the hinge shafts 220 and 320 formed on the bodies of the operation rods 200 and 300 protrude more toward the corresponding direction than the surface of the body plate 400 to be coupled to the fixed slider 20 and the movable slider 30 of the mobile phone. Consists of a structure.
  • the thickness of the body plate 400 is made of a thickness in the range of 1 ⁇ 0.5mm, as in the process of explaining an embodiment of the present invention is made of a thickness of about 0.7mm is suitable for applying to a slim slide cell phone something to do.
  • the assembly of the operation rods 200 and 300 is made through the above-described assembly unit 420, but also an assembly space 410 as an operation rod assembly means for allowing linear movement of the operation rods 200 and 300 within a predetermined stroke range.
  • the guide rails 430 having a bone shape are formed on the inner side of the cover over a predetermined section, while the guides 240 and 340 for fitting to the guide rails 430 protrude outwards on the side surfaces of the operating rods 200 and 300. Is formed. That is, the fixed-side actuating rod 200 and the movable-side actuating rod 300 fitted through the respective assembling parts 420 provided on both sides of the body plate 400 are linearly moved within a predetermined section along the guide rail 430. This is made possible.
  • the compression spring 500 is fitted around the spring assembly pins 230 and 330, and the tip ends of the spring assembly pins 230 and 330 are pin holes. As it is fitted to 440, each of the working rods 200,300 is supported by the elastic force of the compression spring 500, while being supported.
  • Each of the operation rods 200 and 300 assembled to the body plate 400 is prevented from being separated out of the body plate 400 by the elastic force of the compression spring 500 on the operation rods 200 and 300.
  • the movable side stoppers 250 and 350 protrude.
  • the position where the movable side stoppers 250 and 350 are formed is preferably the front of the opposite side of the body (210,310) protruding the hinge shaft (220,320). Therefore, the movable side stoppers 250 and 350 are caught by one edge of the assembly space 410 having a thin thickness behind the assembly portion 420.
  • the spring guide projections (260, 360, 460) to prevent the mounting position of the spring assembly pins 230, 330 and the compression spring 500 is changed by the elastic force of the compression spring 500 mounted on the outer periphery of the spring assembly pins (230, 330) ) Is formed to protrude on the side of the assembly space 410, the both ends of the compression spring 500 and the side of the operating rod (200, 300).
  • the fixed side operating rod 200, the movable side operating rod 300 and the body plate 400 according to the present invention is preferably made of an engineering plastic material that is used a lot in the manufacture of industrial components.
  • the fixed side operating rod 200, the movable side operating rod 300, and the body plate 400 according to the present invention are made of an engineering plastic material, even though their thickness is thin, they have sufficient rigidity and elasticity. The operability and the assembly are good.
  • FIG 8 and 9 are views of the elastic structure 100 configured as described above is applied to the slide-type mobile phone 20
  • Figure 8 is a view of the mobile phone closed state
  • Figure 9 is an elastic structure according to the present invention Is a view showing a state in which the operation
  • Figure 10 is a view of the open state of the mobile phone.
  • the hinge shaft 220 provided on one side of the elastic structure 100 is mounted at a predetermined position of the fixed slider 20, while the hinge shaft 320 provided on the other side is positioned on the movable slider 30. Is mounted on. At this time, the hinge shafts 220 and 320 on both sides are coupled to a predetermined position on the inclined line without being coupled to the same line.
  • the elastic structure 100 mounted as described above may be used in the relation between the fixed side operating rod 200 and the movable side operating rod 300. As shown in FIG. 9, the operation is performed while compressing the compression spring 500 in a direction in which the gap between the hinge shafts 220 and 320 on both sides is narrowed.
  • the compression spring 500 may be removed even if the force applied from the user is removed.
  • the movable slider 30 is moved within a predetermined stroke range. That is, as shown in FIG. 10, the upper unit provided with the display screen and the voice receiver is moved to a position away from the lower unit provided with the keypad and the voice transmitter. This leads to.
  • the hinge shaft 220 and the movable side operation of the fixed side working rod 200 The elastic structure 100 is operated in a direction in which the gap between the hinge shafts 320 of the rod 300 is narrowed. Then, when the distance between the hinge shaft 220 of the fixed side operating rod 200 and the hinge shaft 320 of the movable side operating rod 300 is out of the minimum state, even if the force exerted by the user is removed. By the restoring force of the spring 500, the upper unit is in a superimposed state on the lower unit, and the mobile phone is in a closed state.
  • the elastic structure 100 configured as described above is able to contribute greatly to the slimming of the slide-type mobile phone as the overall thickness is made thin.
  • the elastic structure for a slide-type mobile phone according to the present invention is not limited to the above-described embodiments and can be variously modified within the range allowed by the technical idea of the present invention.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Abstract

La présente invention concerne une structure élastique pour un téléphone portable de type coulissant, ladite structure comprenant une tige de manoeuvre côté fixe, une tige de manoeuvre côté mobile, un ressort de compression hélicoïdal, une plaque support, un moyen permettant l'assemblage des tiges de manoeuvre et un moyen permettant d'empêcher une séparation. La tige de manoeuvre côté fixe comporte un axe d'articulation s'étendant vers le côté fixé à une glissière fixe, de sorte que l'axe d'articulation est accouplé en rotation à la glissière fixe, ainsi qu'un autre côté pourvu d'une extrémité au niveau de laquelle plusieurs goupilles d'assemblage élastiques en forme de fourches font saillie dans le sens longitudinal. La tige de manoeuvre côté mobile comporte un axe d'articulation s'étendant vers le côté fixé à une glissière mobile, de sorte que l'axe d'articulation est accouplé en rotation à la glissière mobile, ainsi qu'un autre côté pourvu d'une extrémité au niveau de laquelle plusieurs goupilles d'assemblage élastiques en forme de fourches font saillie dans le sens longitudinal. Le ressort de compression hélicoïdal est disposé de façon à envelopper chacune des goupilles d'assemblage élastiques faisant saillie de la tige de manoeuvre côté fixe et de la tige de manoeuvre côté mobile. La plaque support est un moyen permettant d'assembler la tige de manoeuvre côté fixe et la tige de manoeuvre côté mobile en sens opposé et à une certaine distance l'une de l'autre, de sorte que les tiges tournent en même temps. La plaque support se présente sous la forme d'une plaque rectangulaire dans laquelle des espaces d'assemblage sont formés de manière parallèle. Chaque espace d'assemblage présente un côté pourvu d'une partie assemblage permettant l'assemblage de la tige de manoeuvre côté fixe ou de la tige de manoeuvre côté mobile. Le côté opposé à la partie assemblage comporte un trou permettant d'insérer l'extrémité de la goupille d'assemblage élastique. Le moyen permettant l'assemblage des tiges de manoeuvre comporte des rails de guidage formés sur les côtés intérieurs des espaces d'assemblage et des éléments de guidage faisant saillie des côtés de la tige de manoeuvre côté fixe et de la tige de manoeuvre côté mobile dans la direction correspondant aux rails de guidage. Le moyen permettant d'empêcher une séparation fait saillie de chaque côté de la tige de manoeuvre côté fixe et de la tige de manoeuvre côté mobile, de façon à empêcher que les deux tiges de manoeuvre ne s'enlèvent des espaces d'assemblage sous l'effet de la force élastique exercée par le ressort de compression.
PCT/KR2009/002803 2008-05-30 2009-05-27 Structure élastique pour téléphone portable de type coulissant WO2009145558A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20080051119 2008-05-30
KR10-2008-0051119 2008-05-30

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WO2009145558A2 true WO2009145558A2 (fr) 2009-12-03
WO2009145558A3 WO2009145558A3 (fr) 2010-02-25

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120098397A1 (en) * 2010-08-24 2012-04-26 Shin Zu Shing Co., Ltd. Sliding hinge and a portable device with the sliding hinge
EP2675139A1 (fr) * 2011-09-27 2013-12-18 Huawei Device Co., Ltd. Module à ressort et téléphone à glissière le comprenant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050120561A (ko) * 2004-10-20 2005-12-22 추종철 포고 핀
US20070155216A1 (en) * 2005-12-30 2007-07-05 High Tech Computer, Corp. Portable electronic device
KR20070096365A (ko) * 2006-03-23 2007-10-02 (주)나노텍 통신단말기용 슬라이드 스프링장치 및 그를 포함하는슬라이드 모듈
KR20080029474A (ko) * 2006-09-29 2008-04-03 주식회사 다이아벨 슬라이딩 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050120561A (ko) * 2004-10-20 2005-12-22 추종철 포고 핀
US20070155216A1 (en) * 2005-12-30 2007-07-05 High Tech Computer, Corp. Portable electronic device
KR20070096365A (ko) * 2006-03-23 2007-10-02 (주)나노텍 통신단말기용 슬라이드 스프링장치 및 그를 포함하는슬라이드 모듈
KR20080029474A (ko) * 2006-09-29 2008-04-03 주식회사 다이아벨 슬라이딩 장치

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120098397A1 (en) * 2010-08-24 2012-04-26 Shin Zu Shing Co., Ltd. Sliding hinge and a portable device with the sliding hinge
US8406703B2 (en) * 2010-08-24 2013-03-26 Shin Zu Shing Co., Ltd. Sliding hinge and a portable device with the sliding hinge
EP2675139A1 (fr) * 2011-09-27 2013-12-18 Huawei Device Co., Ltd. Module à ressort et téléphone à glissière le comprenant
EP2675139A4 (fr) * 2011-09-27 2014-05-14 Huawei Device Co Ltd Module à ressort et téléphone à glissière le comprenant
US9185195B2 (en) 2011-09-27 2015-11-10 Huawei Device Co., Ltd. Spring structure and slide phone using spring structure

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