Foldable smartphone case using spring assembly

Abstract

The present invention relates to a foldable smartphone case, and more specifically to a foldable smartphone case using a spring assembly, in which the ends of a strap are respectively inserted into a case coupled to an upper display unit and a case coupled to a lower display unit, thereby enabling the cases to be interconnected and thus enabling same to be stably fixed to a smartphone, and, by fixing one end of the strap to one side of a leaf spring having a tension spring connected thereto, the length of the strap is automatically adjusted when folding or unfolding a foldable smartphone.

Description

Foldable smartphone case using spring assembly

[0001] The present invention relates to a foldable smartphone case, and more particularly, to a foldable smartphone case using a spring assembly formed such that the two ends of a strap are inserted into the inside of a case coupled to an upper display portion and a case coupled to a lower display portion, respectively, so as to be interconnected, thereby stably fixing the strap to a smartphone, and by fixing one end of the strap to one side of a plate spring to which a tension spring is connected, so that the length of the strap is automatically adjusted when the foldable smartphone is folded or unfolded.

[0002]

[0003] A smartphone is a portable communication terminal developed to allow users to do some of the tasks that could previously be done on a computer, such as searching the Internet and sending and receiving emails, which were previously only possible on a computer, through a smartphone. In particular, a smartphone is the most representative portable device that allows users to selectively install desired programs (applications, apps, apps) and use them according to their needs.

[0004] As the number of smartphone subscribers exploded, new sectors related to smartphones began to emerge. A prime example is the smartphone accessory market, which is experiencing significant growth.

[0005] In particular, among accessories, the market related to smartphone cases that can protect smartphones is growing the fastest. Smartphone cases are increasingly being released in various types, such as simple protection types, bumper types, card storage types, and transparent types, depending on their purpose.

[0006] The case is made of elastic materials such as silicone or urethane, so it can be easily attached and detached from the smartphone. If the smartphone is dropped due to the user's carelessness, the smartphone case absorbs the shock and prevents direct impact to the smartphone body, so many smartphone users use it.

[0007] Meanwhile, with the recent development of so-called foldable smartphones with a display that folds in half, cases for foldable smartphones have been developed and provided, and domestic patent registration No. 10-2353779 (hereinafter, “prior art”) has been disclosed as a prior art for such smartphone cases.

[0008] The above prior art is a case mounted on the outer surface of a foldable mobile phone, comprising: a first case (100) mounted on a first device connected to one side based on a folding hinge of the mobile phone; a second case (200) mounted on a second device connected to the other side based on the folding hinge; and a case connecting part (300) integrally formed with the first case (100) and coupled to the second case (200) to slide in one direction according to a folding motion of the mobile phone and move the first case (100) relative to the second case (200), wherein the second case (200) has a case connecting groove (220a) concavely formed corresponding to the shape of the case connecting part (300), and the case connecting groove (220a) includes at least one case connecting protrusion (220b) protruding outward, and the case connecting part (300) corresponds to the size of the case connecting protrusion (220b) and has a length It is characterized in that it comprises a case connection slot (310) in the shape of a long hole formed to extend in the direction, and the first and second cases (100) are formed with at least one case connection groove (400a) for connection with the first and second outer cases (110, 210), and the first and second outer cases (110, 210) are formed with a case connection protrusion (400b) at a position corresponding to the case defect groove (400a) so as to be connected to the connection groove (400a) by a press force, and the second outer case (210) includes a connection fixing protrusion (220c) that is fitted into the case connection protrusion (220b) formed in the case connection groove (220a) so as to limit the case connection slot (310) to move by a predetermined length without being detached.

[0009] The above prior art can be mounted on the outer surface of a mobile phone through the above configuration to protect the mobile phone from damage from external impact, and can allow the length of the case to be freely adjusted when the foldable mobile phone is folded.

[0010] However, recently, foldable smartphones have begun to include LCDs on the back as well, and the area of ​​the LCD installed on the back is expanding.

[0011] In other words, if existing prior art is used, the problem of covering the rear LCD may occur. To solve this, if a hollow part is drilled on the case to expose the rear LCD, the space for installing the folding part in the case becomes narrow, so the folding part that connects the cases must be removed. Accordingly, the case mounted on the foldable smartphone must be installed separately on the upper display part and the lower display part, and the problem of the case not being properly fixed to the smartphone began to arise.

[0012] To solve this problem, a method of adding a separate connecting member to the back of the case was used, but this resulted in an additional problem of the connecting member protruding from the back of the case, making it uncomfortable to use.

[0013] Accordingly, the need for a foldable smartphone case using a spring assembly formed so that the length of the strap is automatically adjusted when the foldable smartphone is folded or unfolded by having both ends of the strap inserted into the inside of the case coupled to the upper display portion and the case coupled to the lower display portion respectively and interconnected, thereby stably fixing the case to the smartphone, and fixing one end of the strap to one side of a plate spring to which a tension spring is connected, has arisen.

[0014]

[0015] The present invention is intended to solve the above-described problem, and its purpose is to provide a foldable smartphone case using a spring assembly formed so that the two ends of the strap are inserted into the inside of the case coupled to the upper display portion and the case coupled to the lower display portion, respectively, so as to be mutually connected, thereby stably fixing the case to the smartphone, and fixing one end of the strap to one side of a plate spring to which a tension spring is connected, so that the length of the strap is automatically adjusted when the foldable smartphone is folded or unfolded.

[0016] In addition, another object of the present invention is to provide a foldable smartphone case using a spring assembly that can be stably used when using a smartphone, including a finger ring formed to be installed on a strap and to be able to be hung on a finger.

[0017]

[0018] In order to achieve the above-mentioned task, the present invention provides a foldable smartphone case that is coupled to a foldable smartphone in which an upper display unit and a lower display unit are mutually folded, comprising: a first case (100) formed in a form that wraps around the rear surface of the upper display unit, and having a hollow portion (111) formed so that a rear liquid crystal display of the foldable smartphone can be exposed; a second case (200) formed in a form that wraps around the rear surface of the lower display unit; A foldable smartphone case comprises a spring assembly (300) that interconnects the first case (100) and the second case (200) so that the foldable smartphone case can be folded and unfolded, and the spring assembly (300) comprises a horizontal portion (311) formed to be fixedly coupled by a plurality of assembly pins (131) formed horizontally on the lower edge of the hollow portion (111) of the first case (100), and a vertical portion (312) extending vertically from the center of the horizontal portion (311), wherein the horizontal portion (311) and the vertical portion are formed as a single piece, and a 'T'-shaped plate spring (310); And it includes a tension spring (320) in which the other ring is connected to the end of the vertical part (312) of the 'T'-shaped plate spring (310) and one ring is fixed to the second case (200); and a plurality of catches (313) are formed at a predetermined interval on one side of the vertical part (312) of the 'T'-shaped plate spring (310) so that a foldable smartphone case (1000) can be fixed at a predetermined angle, on which a stopper is caught.

[0019] In addition, the lower end of the vertical portion (312) is characterized in that one or more spring fixing holes (314) are formed so that the other side ring of the tension spring (320) can be coupled.

[0020] In addition, the spring assembly (300) is installed on a spring assembly base (350), and the spring assembly base (350) is characterized by including an assembly base (360) coupled to the second case (200), a guide portion (370) formed on the assembly base (360) to guide the spring assembly (300) so that it can be assembled, a stopper (363) formed on one side of the guide portion (370) and caught by a catch (313) formed on a vertical portion (312) of the 'T'-shaped plate spring (310), and a spring fixing bolt (368) that catches one side ring of the tension spring (320) mounted on the guide portion.

[0021] In addition, the stopper (363) is characterized by being composed of a driving part (364) that is installed on one side of the guide part (370) so as to be slidable, a hooking part (365) that is formed on one side of the driving part (364) and is curved and protrudes so as to be hooked on a hooking protrusion (313) formed on a vertical part (312) of the plate spring (310), and a manipulation part (366) that is formed so as to be protruded on the upper surface of the driving part (364) so ​​that a finger can be grounded.

[0022] In addition, the first case (100) is characterized by comprising a first base (110) formed so as to be installed along the outer circumference of the upper display portion of a foldable smartphone, a hollow portion (111) formed on the first base (110) so as to expose the rear liquid crystal display of the foldable smartphone, a female slot (112) formed on one side of the first base (110), a cutout (115) formed on the lower end of the first base (110), a first cover (130) formed with a hollow portion so as to expose the rear liquid crystal display of the foldable smartphone, an assembly pin (131) formed on the lower end of the first cover (130), a male slot (132) formed on one side of the first cover (130) and mutually coupled with the female slot (112), and an assembly slot (120) installed in the cutout (115), wherein assembly grooves (128) to which the assembly pin (131) of the first cover (130) is coupled are formed at a predetermined interval.

[0023] In addition, the first cover (130) is characterized in that the horizontal portion (311) of the 'T'-shaped plate spring (310) installed on the assembly slot (120) and the assembly pin (131) protruding from the inner surface of the first cover (130) are mutually connected.

[0024] In addition, the second case (200) is characterized by comprising a second base (210) formed so as to be installed along the outer circumference of the lower display portion of the foldable smartphone, a female slot (212) formed so as to be able to assemble a spring assembly (300) and a second cover (230) on the inner circumference of the second base (210), a second cover (230) that seals the rear portion of the second base (210), and a male slot (232) formed on one side of the second cover (230) and mutually coupled with the female slot (212).

[0025] In addition, the 'T'-shaped plate spring (310) is characterized in that the lower end of the vertical portion (312) of the 'T'-shaped plate spring (310) is connected to a tension spring (320) installed on the inside of the second case (200), and when the foldable smartphone is folded, the length of the tension spring (320) increases or decreases depending on the degree to which the 'T'-shaped plate spring (310) is bent, so that the position of the lower end of the 'T'-shaped plate spring (310) changes depending on the degree to which the 'T'-shaped plate spring (310) is bent.

[0026] In addition, the foldable smartphone case (1000) is characterized in that a folding part (400) is installed on the upper surface of the 'T'-shaped plate spring (310) to prevent the 'T'-shaped plate spring (310) from being exposed to the outside, and the folding part (400) is installed with both ends inserted into the first case (100) and the second case (200), and includes a strap (410) having an assembly groove (418) spaced apart at a predetermined interval on one side thereof and a finger ring (420) installed on the strap (410) so as to be able to hang a finger.

[0027] In addition, the strap (410) is characterized by including a first horizontal portion (411) formed with the same width as the horizontal portion (311) formed on the 'T'-shaped plate spring (310), a first vertical portion (412) protruding perpendicular to the side surface of the first horizontal portion (411), a fingering coupling portion (413) formed at one end of the first vertical portion (412) and curved in an oval shape, a second vertical portion (414) formed at the other end of the fingering coupling portion (413) and protruding parallel to the first vertical portion (412), and a second horizontal portion (415) formed at the other end of the second vertical portion (414) and protruding so as to be positioned in a straight line with the first horizontal portion (411).

[0028] In addition, the first horizontal portion (411) is characterized in that a plurality of assembly grooves (418) are punched on the same axis as the plurality of assembly grooves (318) formed in the horizontal portion (311) formed in the 'T'-shaped plate spring (310), and the second horizontal portion (415) is characterized in that a plurality of assembly grooves (418) are punched.

[0029] In addition, in order to prevent the fingering (420) connected to the fingering connecting portion (413) from coming off, the first vertical portion (412) and the second vertical portion (414) are characterized in that they are connected using an adhesive or sewing thread.

[0030] In addition, the finger ring (420) is formed in a curved shape to draw an arc, and includes a first link (421) having a first hinge block (422) at one longitudinal end thereof, a second link (425) having a second hinge block (426) at one longitudinal end thereof, and a hinge pin (428) that is fixed by penetrating through the first hinge block (422) and the second hinge block (426), but is coupled so as to be rotatable about a central axis, and a cut portion is formed at each of the longitudinal end of the first link (421) and the longitudinal end of the second link (425), and each of the cut portions is characterized in that they are mutually coupled.

[0031]

[0032] According to the present invention, the two ends of the strap are inserted into the inside of the case coupled to the upper display portion and the case coupled to the lower display portion, respectively, so as to be mutually connected, thereby stably fixing the strap to the smartphone, and by fixing one end of the strap to one side of a plate spring to which a tension spring is connected, the length of the strap is automatically adjusted when the foldable smartphone is folded or unfolded.

[0033] Additionally, it includes a finger ring formed to be installed on the strap and to allow the user to hang a finger, which has the effect of allowing stable use when using a smartphone.

[0034]

[0035] Figure 1 is a perspective view of a foldable smartphone case according to one embodiment of the present invention.

[0036] Figure 2 is a front view of a foldable smartphone case according to one embodiment of the present invention.

[0037] Figure 3 is a rear view of a foldable smartphone case according to one embodiment of the present invention.

[0038] Figure 4 is a side view of a foldable smartphone case according to one embodiment of the present invention.

[0039] Figure 5 is a cross-sectional side view of a foldable smartphone case according to one embodiment of the present invention.

[0040] Figure 6 is an exploded view of a foldable smartphone case according to one embodiment of the present invention.

[0041] Figure 7 is a perspective view of a plate spring of a foldable smartphone case according to one embodiment of the present invention.

[0042] Figure 8 is a front view of a plate spring of a foldable smartphone case according to one embodiment of the present invention.

[0043] Fig. 9 is an example of the formation of the inclined portion of Fig. 7 according to one embodiment of the present invention.

[0044] Fig. 10 is a perspective view of a strap of a foldable smartphone case according to one embodiment of the present invention.

[0045] Figure 11 is a plan view of a strap of a foldable smartphone case according to one embodiment of the present invention.

[0046] Fig. 12 is a side view of the strap of a foldable smartphone case according to one embodiment of the present invention.

[0047] Figure 13 is a detailed view of the finger ring of a foldable smartphone case according to one embodiment of the present invention.

[0048] Fig. 14 is an example of a strap-finger ring integrated foldable smartphone case according to one embodiment of the present invention.

[0049] Fig. 15 is a perspective view of a spring assembly base of a foldable smartphone case according to one embodiment of the present invention.

[0050] Fig. 16 is a rear perspective view of the spring assembly base of a foldable smartphone case according to one embodiment of the present invention.

[0051] Figure 17 is a rear view of the spring assembly base of a foldable smartphone case according to one embodiment of the present invention.

[0052] Fig. 18 is an example of the stopper operation of a foldable smartphone case according to one embodiment of the present invention.

[0053] Fig. 19 is a cross-sectional view of a spring assembly base of a foldable smartphone case according to one embodiment of the present invention.

[0054] Figure 20 is an exploded view of the spring assembly base of a foldable smartphone case according to one embodiment of the present invention.

[0055] Figure 21 is a perspective view of the first case of a foldable smartphone case according to one embodiment of the present invention.

[0056] Figure 22 is a front view of the first case of a foldable smartphone case according to one embodiment of the present invention.

[0057] Figure 23 is a rear view of the first case of a foldable smartphone case according to one embodiment of the present invention.

[0058] Figure 24 is a side view of the first case of a foldable smartphone case according to one embodiment of the present invention.

[0059] Figure 25 is a perspective view of a second case of a foldable smartphone case according to one embodiment of the present invention.

[0060] Figure 26 is a front view of a second case of a foldable smartphone case according to one embodiment of the present invention.

[0061] Figure 27 is a rear view of a second case of a foldable smartphone case according to one embodiment of the present invention.

[0062] Figure 28 is a side view of a second case of a foldable smartphone case according to one embodiment of the present invention.

[0063]

[0064] Referring to the attached drawings below, a foldable smartphone case according to a preferred embodiment of the present invention will be described in detail.

[0065] It is to be understood that the terms used herein are not intended to limit the technology described in this document to a particular embodiment, but rather to encompass various modifications, equivalents, and alternatives of the embodiments.

[0066] Terms such as “first” or “second” used in describing the present invention are intended to distinguish one component from other components of similar form, and the use of such terms does not limit the scope of the rights.

[0067] Additionally, components with similar names are described in the description along with the drawing symbols used in the drawings for differentiation. Therefore, components with different symbols or names that modify specific components should be understood as distinct components even if they share the same name.

[0068] The drawings used to explain the present invention may contain exaggerated or omitted parts of the expressions shown to easily understand the features of the invention, and this does not limit the specific embodiments of the invention.

[0069] In addition, when a specific direction (up, down, left, right, vertical, horizontal, internal, external, etc.) is specified in the description of the present invention, it should be understood that such description is merely to describe a specific example to facilitate explanation and help understanding, and that this does not limit or bind a specific configuration or a specific embodiment.

[0070] As shown in FIGS. 1 to 6, a foldable smartphone case (1000) coupled to a foldable smartphone in which an upper display part and a lower display part are mutually foldable includes a first case (100) formed in a form that wraps around the rear of the upper display part, and a hollow part (111) formed so that the rear liquid crystal of the foldable smartphone can be exposed, a second case (200) formed in a form that wraps around the rear of the lower display part, and a spring assembly (300) that interconnects the first case (100) and the second case (200) while allowing the foldable smartphone case to be folded and unfolded, and the spring assembly (300) includes a horizontal part (311) formed to be fixedly coupled by a plurality of assembly pins (131) formed horizontally on the lower edge of the hollow part (111) of the first case (100), and a vertical part (312) extending vertically from the center of the horizontal part (311), The horizontal part (311) and the vertical part are formed as a single piece, and are composed of a 'T'-shaped 'T'-shaped* plate spring (310) and a tension spring (320) in which the other ring is connected to the end of the vertical part (312) of the 'T'-shaped plate spring (310), and one ring is fixed to the second case (200).

[0071] At this time, the foldable smartphone case (1000) may also have a folding part (400) installed on the upper surface of the 'T'-shaped plate spring (310) to prevent the 'T'-shaped plate spring (310) from being exposed to the outside.

[0072] Specifically, as shown in FIGS. 5 and 6, the folding part (400) is installed with both ends inserted into the inner side of the first case (100) and the inner side of the second case (200), and includes a strap (410) having an assembly groove (418) punched at a predetermined interval on one side thereof, and a finger ring (420) installed on the strap (410) so as to be able to hang a finger.

[0073] In addition, by installing the 'T'-shaped plate spring (310) so as to be positioned on the lower surface of the strap (410), the 'T'-shaped plate spring (310) is prevented from being exposed to the outside, and the end of the vertical portion (312) of the 'T'-shaped plate spring (310) is connected to the tension spring (320) installed on the inside of the second case (200), so that when the foldable smartphone is folded, the length of the tension spring (320) increases or decreases depending on the degree to which the 'T'-shaped plate spring (310) is bent, so that the position of the lower end of the 'T'-shaped plate spring (310) changes depending on the degree to which the 'T'-shaped plate spring (310) is bent.

[0074] As described above, the foldable smartphone case (1000) of the present invention has a structure in which both ends of the 'T'-shaped plate spring (310) and the folding portion (400) are respectively inserted into the first case (100) and the second case (200) and are interconnected, so that when the foldable smartphone is folded and unfolded, the position of the lower end of the 'T'-shaped plate spring (310) can be changed depending on the degree to which the 'T'-shaped plate spring (310) is bent, while being thin in volume.

[0075] In addition, a pair of magnets (500) are provided on each side of the first case (100) and the second case (200), and the pair of magnets (500) are provided at mutually symmetrical positions so that when the upper display part and the lower display part are folded together, the pair of magnets (500) can be magnetically coupled to each other.

[0076] That is, the foldable smartphone case (1000) of the present invention can prevent the first case (100) and the second case (200) from being unnecessarily opened while folded by fixing them in a folded state by a pair of magnets (500).

[0077] In addition, in order to prevent damage caused by collision between the first case (100) and the second case (200) when the foldable smartphone case (1000) is unfolded, a shock absorbing member made of an elastic material such as rubber or silicone may be installed at the end of each case (100, 200). In this case, in order to prevent the folding or unfolding motion of the foldable smartphone case (1000) from being hindered by interference between the shock absorbing members, it is preferable to form the distance between the ends of each case (100, 200) to be spaced apart by a predetermined interval, and to process the corners of the ends to be rounded.

[0078] As illustrated in FIGS. 7 to 9, the 'T'-shaped plate spring (310) is configured to include a horizontal portion (311) that is inserted into the inside of the first case (100) and has a plurality of assembly grooves (318) punched out at a predetermined interval, a vertical portion (312) that is inserted into the inside of the second case (200) and has a plurality of catches (313) formed on the side at a predetermined interval, and one or more spring fixing members (314) that are formed at the lower end of the vertical portion (312) and punched out so that the other ring of the tension spring (320) is caught.

[0079] The above horizontal portion (311) is configured to be seated in an assembly slot (120) installed in the first case (100). Specifically, the horizontal portion (311) is inserted into the inside of the first case (100), and is seated between the rear surface of the assembly slot (120) and the first cover (130) installed on the rear surface of the first case (100).

[0080] In addition, as shown in FIGS. 7 and 8, the 'T'-shaped plate spring (310) may form a reinforcing portion (317) at the point where the horizontal portion (311) and the vertical portion (312) are connected to ensure durability, and the reinforcing portion (317) is formed to have an incline of 30 to 60 degrees with respect to the side of the vertical portion (312) of the 'T'-shaped plate spring (310).

[0081] In addition, as shown in Fig. 9, an inclined portion (316) of a predetermined angle may be formed at the lower portion of the vertical portion (312) where the spring fixing member (314) is formed to facilitate installation of the other side ring of the tension spring (320).

[0082] As illustrated in FIGS. 10 to 12, the strap (410) comprises a first horizontal portion (411) formed with the same width as the horizontal portion (311) formed on the 'T'-shaped plate spring (310), a first vertical portion (412) protruding perpendicular to the side surface of the first horizontal portion (411), a fingering coupling portion (413) formed at one end of the first vertical portion (412) and curved in an oval shape, a second vertical portion (414) formed at the other end of the fingering coupling portion (413) and protruding parallel to the first vertical portion (412), and a second horizontal portion (415) formed by protruding at the other end of the second vertical portion (414) and formed in a straight line with the first horizontal portion (411).

[0083] At this time, the first horizontal portion (411) is configured to be inserted into the inside of the first case (100), and the second horizontal portion (415) is configured to be inserted into the inside of the second case (200).

[0084] In addition, the first horizontal portion (411) has a plurality of assembly grooves (418) punched on the same axis as the plurality of assembly grooves (318) formed in the horizontal portion (311) formed in the 'T'-shaped plate spring (310), and the second horizontal portion (415) has a plurality of assembly grooves (418) punched at a predetermined interval.

[0085] In addition, in order to prevent the fingering (420) connected to the fingering connecting portion (413) from coming off, the first vertical portion (412) and the second vertical portion (414) may be connected using an adhesive or sewing thread.

[0086] In addition, the strap (410) may be formed of an elastic material including any one of polyurethane, synthetic fiber, leather, rubber, or silicone to prevent damage caused by tension generated from the tension spring (320).

[0087] As illustrated in FIG. 13, the finger ring (420) is formed in a curved shape to draw an arc, and includes a first link (421) having a first hinge block (422) provided at one longitudinal end thereof, a second link (425) that is mounted on the first hinge block (422) and has a second hinge block (426) provided at one longitudinal end thereof, and a hinge pin (428) that penetrates and fixes the first hinge block (422) and the second hinge block (426), but is coupled so as to be rotatable about a central axis, and a cut portion is formed at each of the longitudinal end of the first link and the longitudinal end of the second link, and the shapes of the cut portions may be formed to be mutually coupled.

[0088] That is, the finger ring (420) is formed to be detachable from the strap (410), and if necessary, an accessory such as a magnet or griptok for mounting may be additionally attached to the finger ring (420) and then reattached to the strap (410).

[0089] Alternatively, as illustrated in FIG. 14, the strap (410) may be formed of a first vertical portion (412) protruding perpendicular to the side surface of the first horizontal portion (411), a fingering portion (419) formed at one end of the first vertical portion (412) but integrally connected to the fingering (420), and a second vertical portion (414) formed at the other end of the fingering portion (419) but protruding parallel to the first vertical portion (412).

[0090] That is, the finger ring (420) is not formed to be detachable, but is formed integrally with the strap (410) by protruding from one side of the strap (410), and may be formed of an elastic material including any one of polyurethane, synthetic fiber, leather, rubber, or silicone.

[0091] As shown in FIGS. 15 to 20, the spring assembly (300) is installed on a spring assembly base (350), and the spring assembly base (350) is assembled by being seated in a female slot (212) formed on the second base (210).

[0092] Specifically, the spring assembly base (350) comprises an assembly base (360) coupled to the second case (200), a guide portion (370) formed on the assembly base (360) to guide the spring assembly (300) to be assembled, a stopper (363) formed on one side of the guide portion (370) and installed to be caught by a catch (313) formed on a vertical portion (312) of the 'T'-shaped plate spring (310), and a spring fixing bolt (368) to catch one side ring of the tension spring (320) mounted on the guide portion.

[0093] At this time, the assembly base (360) is assembled using the female slot (212) of the second base (210) and the lower slot (211) formed at the bottom of the U-shaped inner surface of the second base (210), and is assembled to the front side of the female slot (212), and a plurality of guides are provided in a sunken shape on the rear side of the assembly base (360) so that the spring assembly base (350) can be seated in the female slot (212).

[0094] In addition, so that the lower slot (211) formed at the lower end of the U-shaped inner surface of the second base (210) can be coupled to the lower end of the assembly base (360), guides having a sunken shape in the shape of the lower slot (211) are formed at a predetermined interval on the lower end of the rear portion of the assembly base (360).

[0095] In addition, the stopper (363) installed on the assembly base (360) is composed of a driving part (364) that is installed on one side of the guide part (370) so as to be slidable, a hook part (365) that is formed on one side of the driving part (364) and is curved and protrudes so as to be hooked on a hooking protrusion (313) formed on the vertical part (312) of the 'T'-shaped plate spring (310), and an operating part (366) that is formed with an anti-slip board that protrudes on the upper surface of the driving part (364) so ​​that a finger can be grounded.

[0096] The above driving unit (364) can fix or release the current position of the 'T'-shaped plate spring (310) that is bent in the rotational direction of the foldable smartphone according to the operation of the operating unit (366). As an example, when the operating unit (366) slides to the left with respect to the rear of the foldable smartphone case (1000), the catch (365) is caught by the catch protrusion (313) formed in the vertical portion (312) of the 'T'-shaped plate spring (310) to fix the current position of the 'T'-shaped plate spring (310), and when the operating unit (366) slides to the right with respect to the rear of the foldable smartphone case (1000), the catch (365) is released from the catch protrusion (313) formed in the vertical portion (312) of the 'T'-shaped plate spring (310), and the 'T'-shaped plate spring (310) The guide part (370) moves up and down so that when the foldable smartphone is folded, it can be bent in the direction of the hinge rotation of the foldable smartphone.

[0097] In addition, when folding and unfolding the foldable smartphone, the angle of the foldable smartphone can be adjusted arbitrarily by the user by the free stop hinge, and the catch (365) of the driving unit (364) catches a plurality of catch protrusions (313) formed on the 'T' shaped plate spring (310), thereby fixing the foldable smartphone case (1000) of the present invention at a predetermined angle.

[0098] In addition, the spring assembly (300) is installed and secured to one side of the guide portion (370) formed in the assembly base (360), and specifically, one side ring of the tension spring (320) of the spring assembly (300) is caught by the spring fixing bolt (368), and the other end ring of the tension spring (320) is caught by the spring fixing member (314) formed at the end of the vertical portion (312) of the 'T'-shaped plate spring (310).

[0099] Specifically, the guide part (370) may be provided with a guide part (370) of a different shape depending on the configuration of the spring assembly (300), and as an example, the guide part (370) may include a polygonal recessed plate spring guide part (370a) so that the 'T'-shaped plate spring (310) of the spring assembly (300) can be seated, and a tensile spring guide part (370b) so that the tensile spring (320) of the spring assembly (300) can be seated.

[0100] In addition, the tension spring (320) of the spring assembly (300) has rings formed at both ends, and one of the rings formed in the tension spring (320) is caught on the axis of a spring fixing bolt (368) installed at the bottom of the assembly base (360), and the ring of the tension spring (320) is prevented from coming off by a bolt head formed at one end of the spring fixing bolt (368).

[0101] At this time, the rings formed in the tension spring (320) are formed to be perpendicular to each other on a plane. Specifically, if one ring of the tension spring (320) that is caught on the spring fixing bolt (368) is formed in a 'ㅡ' shape on a plane, the other ring of the tension spring (320) that is caught on the spring fixing member (314) of the 'T'-shaped plate spring (310) may be formed in an 'ㅣ' shape.

[0102] In addition, the assembly base (360) may be provided with a plurality of assembly pins (361) having a protruding shape corresponding to a plurality of assembly grooves (418) punched at a predetermined interval on the second horizontal portion (415) of the strap (410), and a recessed guide may be formed on the upper rear surface of the assembly base (360) so that the second horizontal portion (415) can be seated thereon, so that the second horizontal portion (415) of the strap (410) inserted into the inside of the second case (200) can be fixed and installed between the rear surface of the assembly base (360) and the second cover (230).

[0103] As shown in FIGS. 21 to 24, the first case (100) comprises: a first base (110) formed so as to be installed along the outer circumference of the upper display portion of a foldable smartphone; a hollow portion (111) formed on the first base (110) so as to expose the rear liquid crystal display of the foldable smartphone; a female slot (112) formed on one side of the first base (110); a cutout (115) formed on the lower end of the first base (110); a first cover (130) formed so as to expose the rear liquid crystal display of the foldable smartphone; an assembly pin (131) formed on the lower end of the first cover (130); a male slot (132) formed on one side of the first cover (130) and mutually coupled with the female slot (112); and an assembly groove (128) installed in the cutout (115), to which the assembly pin (131) of the first cover (130) is coupled, formed at a predetermined interval. It consists of an assembly slot (120).

[0104] In addition, the first base (110) may be formed by injection molding with a material such as silicone or TPU (Thermoplastic Polyurethane), and may be formed in a shape in which a hollow portion (111) is perforated so that the rear LCD or rear camera of the foldable smartphone can be exposed.

[0105] At this time, the first base (110) of the first case (100) completely surrounds the upper surface and both sides of the upper display portion of the foldable smartphone, but is formed so that the lower surface and the front surface are open, thereby surrounding and protecting the upper surface, both sides, and the rear surface of the upper display portion.

[0106] In addition, the assembly slot (120) may have a protrusion formed at both ends of the assembly slot (120) to guide the first horizontal portion (411) of the strap (410) to be secured.

[0107] In addition, the assembly slot (120) of the first case (100) is injection-molded into a rectangular bar shape so that it can be installed in the cut-out (115) formed at the bottom of the first base (110), and the assembly slot (120) can be joined at both ends of the assembly slot (120) to each end of the cut-out (115) using ultrasonic waves without using a separate member.

[0108] In addition, an assembly groove (128) may be punched on the assembly slot (120), and guides may be protruded at both ends of the assembly slot (120) so that the first horizontal portion (411) of the strap (410) and the horizontal portion (311) of the 'T'-shaped plate spring (310) can be seated on the rear surface of the assembly slot (120).

[0109] In addition, the first cover (130) of the first case (100) includes an assembly pin (131) that is injected and protrudes from the inner surface of the first cover (130) to be mutually coupled so as to fix together the assembly slot (120), the first horizontal portion (411) of the strap (410) installed along the guide of the assembly slot (120), and the horizontal portion (311) of the 'T'-shaped 'T'-shaped* plate spring (310).

[0110] In addition, the first cover (130) is injection-molded with PC (Polycarbonate) material and is installed on the rear side of the first base (110), and its overall shape is formed in a shape corresponding to the first base (110).

[0111] In addition, the first cover (130) is formed with a hollow portion that is completely open so that the rear liquid crystal display of the foldable smartphone is exposed, and a male slot (132) protrudes from the inner surface of the first cover (130), and the male slot (132) is coupled to the female slot (112) formed in the first base (110), thereby mutually coupling the first base (110) and the first cover (130).

[0112] In addition, the first cover (130) may have an assembly pin (131) protruding, which is inserted into an assembly groove (128) perforated on both ends of the assembly slot (120) at the bottom, an assembly groove perforated in the first horizontal portion (411) of the strap (410) seated on the rear of the assembly slot (120), and an assembly groove (318) perforated in the horizontal portion (311) of the 'T'-shaped plate spring (310).

[0113] In addition, among the plurality of assembly pins (131), the assembly pins (131) formed at both ends are inserted by penetrating the assembly groove (128) punched in the assembly slot (120), and other assembly pins (131) can be fixed by penetrating in a straight line the assembly groove punched in the first horizontal portion (411) of the strap (410) and the assembly groove (138) punched in the horizontal portion (311) of the 'T'-shaped plate spring (310).

[0114] As illustrated in FIGS. 25 to 28, the second case (200) is composed of a second base (210) formed so as to be installed along the outer circumference of the lower display portion of the foldable smartphone, a female slot (212) formed so as to be able to assemble a spring assembly base (350) and a second cover (230) on the inner circumference of the second base (210), a second cover (230) that seals the rear portion of the second base (210), and a male slot (232) formed on one side of the second cover (230) and mutually coupled with the female slot (212).

[0115] The second base (210) of the second case (200) is formed of a material such as silicone or TPU, and is configured to accommodate a foldable smartphone. It is injection-molded in a U shape, and a plurality of female slots (212) are formed at predetermined intervals along the inner surface of the second base (210), and a lower slot (211) is formed at the bottom of the inner surface of the second base (210).

[0116] At this time, the lower slot (211) is inserted into the lower part of the rear part of the spring assembly base (350) to be connected, and a guide formed on the rear part of the spring assembly base (350) is placed on the front part of a plurality of female slots (212) formed along the inner surface of the second base (210) to be mutually connected.

[0117] In addition, the second cover (230) may include a perforated operation hole (238) so that the operation part (366) of the stopper (363) is exposed and can slide left and right, and it is preferable that the width of the operation hole (238) be formed larger than the width of the operation part (366) so that the operation part (366) can slide smoothly along the operation hole (238).

[0118] The second cover (230) of the second case (200) is formed in a form that covers both sides, the lower surface, and the rear surface of the second base (210) so as to protect the spring assembly (300) and the spring assembly base (350), while the upper surface is formed in a form that is open to a predetermined length.

[0119] At this time, the second cover (230) is formed on the front with a plurality of male slots (232) that are inserted into the female slots (212) so that the second cover (230) can be coupled to the second base (210), and the male slots (232) are inserted from the rear side of the female slots (212), but one end of the inserted male slots (232) is formed so as to rise above the front side of the female slots (212) so as to be coupled to one of the plurality of guides formed on the rear side of the spring assembly base (350).

[0120] In addition, the second cover (230) may have a plurality of assembly holes (235) protruding from the front side of the second cover (230) with the inner side tapped and formed with screw threads, and the assembly holes (235) are each inserted into one of the plurality of guides formed on the rear side of the spring assembly base (350), and a screw bolt is inserted from the front side of the spring assembly base (350) to fasten it to the assembly holes (235), thereby stably fixing the spring assembly base (350) to the second base (210) and the second cover (230).

[0121] In addition, since the front of the spring assembly base (350) of the foldable smartphone case (1000) having the above configuration may be exposed, an inner sheet (600) may be additionally installed to seal and protect it.

[0122] Specifically, the inner sheet (600) is made of a PC (Polycarbonate) material plate formed to a thickness of 0.1 mm to 0.2 mm and is installed on the front side of the second base (210) of the second case (200) using a method such as an adhesive, double-sided tape (601), or ultrasonic bonding.

[0123] At this time, a plurality of hollow portions (610) spaced apart at a predetermined interval are formed on the surface of the inner sheet (600), and by using the hollow portions (610) to attach a double-sided tape (601) to the second base (210) of the second case (200) or the front part of the spring assembly base (350), when the lower display portion of the foldable smartphone is connected to the second case (200), the double-sided tape (601) stably fixes the lower display portion of the foldable smartphone to the second base (210) of the second case (200), thereby preventing the foldable smartphone from being pushed out and separated from the foldable smartphone case (1000) of the present invention.

[0124] In the above content, the present invention has been described based on the drawings, and is not limited to the part described based on the drawings, and various changes can be made within the scope that does not depart from the gist of the present invention in the technical field to which the present invention belongs through the part described based on the drawings.

Claims

1. In a foldable smartphone case that is combined with a foldable smartphone in which the upper display part and the lower display part are folded together, A first case (100) formed in a form that wraps around the rear of the upper display portion, but having a hollow portion (111) formed so that the rear liquid crystal display of the foldable smartphone can be exposed; A second case (200) formed in a shape that wraps around the rear surface of the lower display portion; It includes a spring assembly (300) that interconnects the first case (100) and the second case (200) so that the foldable smartphone case can be folded and unfolded. The above spring assembly (300) is A horizontal portion (311) formed to be fixedly connected by a plurality of assembly pins (131) formed horizontally on the lower edge of the hollow portion (111) of the first case (100), and a vertical portion (312) extending vertically from the center of the horizontal portion (311), wherein the horizontal portion (311) and the vertical portion are formed as a single piece, and a 'T'-shaped plate spring (310); and A tension spring (320) is included, in which the other ring is connected to the end of the vertical part (312) of the 'T'-shaped plate spring (310) and one ring is fixed to the second case (200). A foldable smartphone case using a spring assembly, characterized in that a plurality of catches (313) are formed at a predetermined interval on one side of the vertical portion (312) of the above 'T'-shaped plate spring (310) so that a stopper is caught to fix the foldable smartphone case (1000) at a predetermined angle.

2. In paragraph 1, A foldable smartphone case using a spring assembly, characterized in that one or more spring fixing holes (314) are formed at the lower end of the vertical portion (312) so that the other side ring of the tension spring (320) can be coupled thereto.

3. In paragraph 1, The above spring assembly (300) is installed on the spring assembly base (350), The above spring assembly base (350) is An assembly base (360) coupled to the second case (200); A guide part (370) formed on the assembly base (360) to guide the spring assembly (300) so that it can be assembled; A stopper (363) formed on one side of the above guide portion (370) and caught on a catch (313) formed on the vertical portion (312) of the 'T' shaped plate spring (310); and A foldable smartphone case using a spring assembly, characterized in that it comprises a spring fixing bolt (368) that allows one side ring of the tension spring (320) to be caught when mounted on the guide portion.

4. In paragraph 3, The above stopper (363) is A driving unit (364) installed on one side of the above guide unit (370) so as to be able to slide; A hook (365) formed on one side of the driving part (364) and curved and protruding to be hooked on a hook (313) formed on the vertical part (312) of the 'T'-shaped plate spring (310); and A foldable smartphone case using a spring assembly characterized by comprising an operating part (366) formed to protrude from the upper surface of the driving part (364) so ​​that a finger can be grounded.

5. In paragraph 1, The above first case (100) is A first base (110) formed so as to be installed along the outer surface of the upper display portion of a foldable smartphone; A female slot (112) formed on one side of the first base (110); A cut portion (115) formed at the bottom of the first base (110); A first cover (130) having a hollow portion formed to expose the rear LCD of a foldable smartphone; An assembly pin (131) formed at the bottom of the first cover (130); A male slot (132) formed on one side of the first cover (130) and mutually coupled with the female slot (112); and A foldable smartphone case using a spring assembly, characterized in that it is installed in the above-mentioned cut portion (115), and comprises an assembly slot (120) in which an assembly groove (128) to which an assembly pin (131) of a first cover (130) is coupled is formed at a predetermined interval.

6. In paragraph 5, The above first cover (130) is A foldable smartphone case using a spring assembly, characterized in that a horizontal portion (311) of a 'T'-shaped plate spring (310) installed on the above assembly slot (120) and an assembly pin (131) protruding from the inner surface of the first cover (130) are mutually connected.

7. In paragraph 1, The above second case (200) is, A second base (210) formed so that it can be installed along the outer surface of the lower display portion of a foldable smartphone; A female slot (212) formed on the inner surface of the second base (210) so as to enable assembly of the spring assembly base (350) and the second cover (230); A second cover (230) sealing the rear side of the second base (210); and A foldable smartphone case using a spring assembly characterized by comprising a male slot (232) formed on one side of the second cover (230) and mutually coupled with the female slot (212).

8. In paragraph 1, The above 'T' shaped plate spring (310) is The lower end of the vertical portion (312) of the above 'T' shaped plate spring (310) is connected to the tension spring (320) installed on the inside of the second case (200), A foldable smartphone case using a spring assembly, characterized in that when the foldable smartphone is folded, the length of the tension spring (320) increases or decreases depending on the degree to which the 'T'-shaped plate spring (310) is bent, and the position of the lower end of the 'T'-shaped plate spring (310) changes depending on the degree to which the 'T'-shaped plate spring (310) is bent.

9. In paragraph 1, The above foldable smartphone case (1000) is In order to prevent the above 'T' shaped plate spring (310) from being exposed to the outside, a folding part (400) is installed on the upper surface of the above 'T' shaped plate spring (310). The above folding part (400) is A strap (410) having both ends inserted into the first case (100) and the second case (200) respectively, and having an assembly groove (418) punched at a predetermined interval on one side; and A foldable smartphone case using a spring assembly, characterized by including a finger ring (420) formed to be installed on the strap (410) so as to be able to hang a finger.

10. In paragraph 9, The above strap (410) is, A first horizontal portion (411) formed with the same width as the horizontal portion (311) formed in the above 'T' shaped plate spring (310); and A foldable smartphone case using a spring assembly, characterized in that it includes a second horizontal portion (415) formed at the other end of a second vertical portion (414) and protruding so as to be positioned in a straight line with the first horizontal portion (411).

11. In paragraph 10, The first horizontal portion (411) above has a plurality of assembly grooves (418) punched on the same axis as the plurality of assembly grooves (138) formed in the horizontal portion (311) formed in the 'T' shaped plate spring (310). A foldable smartphone case using a spring assembly characterized in that the second horizontal portion (415) above has a plurality of assembly grooves (418) punched through it.

12. In paragraph 10 or 11, The above strap (410) is, A first vertical portion (412) protruding perpendicular to the side surface of the first horizontal portion (411); A fingering joint (413) formed at one end of the first vertical section (412) and curved in an oval shape; and It further includes a second vertical portion (414) formed at the other end of the above fingering joint (413) and protruding parallel to the first vertical portion (412); A foldable smartphone case using a spring assembly, characterized in that the first vertical portion (412) and the second vertical portion (414) are joined using an adhesive or sewing thread to prevent detachment of the finger ring (420) joined to the finger ring connecting portion (413).

13. In paragraph 12, The above fingering (420) is, A first link (421) formed in a curved shape to draw an arc and having a first hinge block (422) provided at one end in the longitudinal direction; A second link (425) mounted on the first hinge block (422) and having a second hinge block (426) provided at one end in the longitudinal direction; and It includes a hinge pin (428) that is fixed by penetrating the first hinge block (422) and the second hinge block (426) and is coupled so as to be able to rotate around the central axis. A foldable smartphone case using a spring assembly, characterized in that a cut portion is formed at each of the longitudinal end of the first link (421) and the longitudinal end of the second link (425), and each cut portion is mutually connected.

14. In paragraph 10 or 11, The above strap (410) is, A first vertical portion (412) protruding perpendicular to the side surface of the first horizontal portion (411); A fingering portion (419) formed at one end of the first vertical portion (412) and integrally connected to the fingering (420); and A foldable smartphone case using a spring assembly, characterized in that it further includes a second vertical portion (414) formed at the other end of the fingering portion (419) and protruding parallel to the first vertical portion (412).

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