Foldable mechanism and foldable terminal

Abstract

The present application relates to the technical field of electronic devices, and particularly to a foldable mechanism and a foldable terminal. The foldable mechanism comprises a base, a first swing arm, a connecting block, a stop arm, and a door panel; at least one of the connecting block and the stop arm is connected to the door panel; a first end of the first swing arm is connected to the connecting block, and a second end of the first swing arm is rotatably connected to the base; a first end of the stop arm is connected to the connecting block, and a second end of the stop arm is connected to the first swing arm; the stop arm is provided with a first abutment body, the side of the first abutment body away from the base is used for being in surface contact with the connecting block, and the end of the stop arm facing the base is used for abutting against the first swing arm. When a corresponding foldable terminal is subjected to corner drop or edge drop, the first abutment body in surface contact with the connecting block can improve the orientation stability relative to the connecting block, thereby facilitating smooth movement of the first abutment body along with the connecting block to abut against the first swing arm, reducing the amount of intrusion of the connecting block towards a display screen, and reducing the risk of damage to the display screen.

Description

Foldable mechanism and foldable terminal TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of electronic devices, and in particular to a foldable mechanism and a foldable terminal. The present application claims priority to the Chinese patent application No. 202410979639.2, filed on July 19, 2024, and entitled "Foldable mechanism and foldable terminal", the entire content of which is incorporated herein by reference. BACKGROUND

[0002] For foldable terminals such as foldable mobile phones, the foldable terminals on the market are connected by a foldable mechanism in the form of a hinge mechanism, so as to realize the folding of the two-part housing and the foldable terminal.

[0003] In the use process of foldable terminals such as foldable mobile phones, if the foldable terminal falls, the display screen of the foldable terminal may be damaged at times. SUMMARY

[0004] The present application provides a foldable mechanism to reduce the risk of damage to the corresponding display screen.

[0005] In a first aspect, the present application provides a foldable mechanism for a foldable terminal, the foldable mechanism comprising a base, a first swing arm, a connecting block, a stop arm and a door plate, the connecting block being used to connect the housing of the foldable terminal; the door plate being used to support the display screen of the foldable terminal, at least one of the connecting block and the stop arm being connected with the door plate; the first end of the first swing arm being connected with the connecting block, the second end of the first swing arm being rotationally connected with the base; the first end of the stop arm being connected with the connecting block, the second end of the stop arm being connected with the first swing arm; the stop arm being provided with a first abutting body, the side of the first abutting body away from the base being used to contact the connecting block, the end of the stop arm towards the base being used to abut the first swing arm.

[0006] By setting the foldable mechanism to include a base, a first swing arm, a connecting block, a stop arm and a door plate, a first end of the first swing arm is connected with the connecting block, and a second end of the first swing arm is rotationally connected with the base; a first end of the stop arm is connected with the connecting block, and a second end of the stop arm is connected with the first swing arm; a first abutting body is arranged on the stop arm, a side of the first abutting body away from the base is used to be in surface contact with the connecting block, and an end of the stop arm towards the base is used to abut against the first swing arm; when an angle drop or a height drop occurs at a corresponding foldable terminal of the foldable mechanism, the connecting block moves relative to the base along with the corresponding shell, the first abutting body in surface contact with the connecting block can improve the posture stability relative to the connecting block, is conducive to stably moving the first abutting body along with the connecting block to abut against the first swing arm, is conducive to reducing the intrusion amount of the connecting block towards the door plate and the display screen, and is conducive to reducing the damage risk of the corresponding display screen.

[0007] In a possible implementation, the first abutting body includes an arc-shaped plate, the connecting block is provided with an arc-shaped groove, and an axis of the arc-shaped plate and an axis of the arc-shaped groove are respectively parallel to an axis of rotation of the first swing arm; the arc-shaped plate extends into the arc-shaped groove, and a side of the arc-shaped plate away from the base abuts against the arc-shaped groove.

[0008] In another possible implementation, a side of the arc-shaped plate towards the base abuts against the arc-shaped groove.

[0009] In another possible implementation, a side of the stop arm away from the door plate is provided with a first accommodating recess, and the connecting block is provided with a connecting cantilever which extends into the first accommodating recess in a direction towards the door plate.

[0010] In another possible implementation, in a direction from the connecting block to the base, the connecting cantilever is arranged at a side of the arc-shaped plate towards the base; a gap between the connecting cantilever and the connecting block forms the arc-shaped groove, and an end of the arc-shaped plate along the axis of rotation of the first swing arm is suspended and forms the first accommodating recess with an end surface of the stop arm.

[0011] In another possible implementation, a side of the stop arm away from the door plate is provided with a stop protrusion, an end surface of the stop protrusion away from the base is used to be in surface contact with the connecting block, and the first abutting body includes the stop protrusion.

[0012] In another possible implementation, the end surface of the stop protrusion away from the base is arranged in alignment with a part of the end surface of the stop arm away from the base and is used together to abut against the connecting block; in a direction parallel to the axis of rotation of the first swing arm, the stop protrusion and the arc-shaped plate are arranged in a spaced manner; and the connecting cantilever extends into the first accommodating recess from the space between the stop protrusion and the arc-shaped plate.

[0013] In another possible implementation, the stop arm is provided with a second receiving recess on a side facing the door panel, and the first swing arm is further provided with a second abutting body, which is arranged to abut against a wall surface of the second receiving recess away from the side of the door panel.

[0014] In another possible implementation, the second receiving recess is arranged on an end of the stop arm facing the first swing arm in a direction parallel to an axis of rotation of the first swing arm, and the second abutting body is arranged on an end of the first swing arm facing the stop arm.

[0015] In another possible implementation, the first swing arm is provided with a third receiving recess on a side facing the door panel, and an end of the stop arm facing the base is at least partially received in the third receiving recess; the end of the stop arm facing the base is arranged to be spaced apart from a wall surface of the third receiving recess, and the end of the stop arm facing the base is configured to move to abut against the wall surface of the third receiving recess.

[0016] In another possible implementation, at least one of the first swing arm and the connecting block is provided with a support strip, which is arranged to extend in a direction parallel to an axis of rotation of the first swing arm; the support strip is arranged on a side of the stop arm away from the door panel, and the support strip is configured to abut against the side of the stop arm away from the door panel.

[0017] In another possible implementation, one end of the door panel is rotationally connected to the connecting block, the stop arm is provided with a connecting column arranged to extend in a direction parallel to an axis of rotation of the first swing arm; the door panel is provided with a connecting protrusion on a side facing the stop arm, the connecting protrusion is provided with a connecting groove, and the connecting column is arranged to extend into the connecting groove.

[0018] In another possible implementation, the connecting column is arranged as a flat column, and the connecting column is arranged to be spaced apart from a wall surface of the connecting groove.

[0019] In another possible implementation, the foldable mechanism further comprises a second swing arm, a first end of the second swing arm is connected to the connecting block, and a second end of the second swing arm is rotationally connected to the base; the first swing arm and the second swing arm are configured to be driven by the connecting block to rotate relative to the base when the connecting block rotates relative to the first swing arm.

[0020] In another possible implementation, one end of the door panel is rotationally connected to the connecting block, and the other end of the door panel is connected to the first swing arm or the second swing arm.

[0021] In another possible implementation, the first swing arm is configured to rotate relative to the base to a folded state and an unfolded state, the first swing arm and the base enclose a first enclosed angle in the folded state, the first swing arm and the base enclose a second enclosed angle in the unfolded state, the first enclosed angle is smaller than the second enclosed angle; in the folded state, the first abutting body is in surface contact with the connecting block away from one side of the base, and the stop arm is configured to abut against the first swing arm at one end thereof towards the base.

[0022] In another possible implementation, the foldable mechanism includes two sets of swing assemblies, the two sets of swing assemblies are respectively arranged at opposite sides of the base, and each swing assembly includes the first swing arm, the connecting block, the stop arm, and the door plate.

[0023] In a second aspect, the present application provides a foldable terminal, which includes a housing and the foldable mechanism as described above; the housing includes a first shell and a second shell, the foldable mechanism is connected between the first shell and the second shell, and the first shell and the second shell are respectively connected with the connecting blocks of the two sets of swing assemblies. BRIEF DESCRIPTION OF DRAWINGS

[0024] FIG. 1 is a schematic diagram of a foldable terminal in a folded state according to an embodiment of the present application;

[0025] FIG. 2 is a schematic diagram of a foldable terminal in an unfolded state according to an embodiment of the present application;

[0026] FIG. 3 is an exploded view of a foldable terminal in an unfolded state according to an embodiment of the present application;

[0027] FIG. 4 is an exploded view of a partial structure of a foldable terminal according to an embodiment of the present application;

[0028] FIG. 5 is a cross-sectional view of a foldable mechanism according to the related art;

[0029] FIG. 6 is another cross-sectional view of a foldable mechanism according to the related art;

[0030] FIG. 7 is a connection diagram of a foldable mechanism according to an embodiment of the present application;

[0031] FIG. 8 is a connection diagram of a foldable mechanism according to another embodiment of the present application;

[0032] FIG. 9 is a first state diagram of a foldable terminal in a falling process according to another embodiment of the present application;

[0033] FIG. 10 is a second state diagram of a foldable terminal in a falling process according to another embodiment of the present application;

[0034] Fig. 11 is a schematic view of a partial structure of a folding mechanism in another embodiment of the present application;

[0035] Fig. 12 is a schematic view of a cross section at the position of D-D in Fig. 11;

[0036] Fig. 13 is a schematic view of a cross section at the position of E-E in Fig. 11;

[0037] Fig. 14 is a schematic view of a cross section at the position of F-F in Fig. 11;

[0038] Fig. 15 is a schematic view of a cross section at the position of G-G in Fig. 11. DETAILED DESCRIPTION

[0039] The terms "first", "second", and "third" and the like in the description and in the claims of the present application and the summary of the application herein are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of use in either order.

[0040] In the embodiments of the present application, the terms "exemplary" and "for example" are used to mean "an example of." Any implementation or design solution described as "exemplary" or "for example" in the embodiments of the present application is not necessarily to be construed as preferred or advantageous over other implementations or design solutions.

[0041] For folding mobile phones and other foldable terminals, the foldable terminals on the market are connected by folding mechanisms in the form of hinge mechanisms and the like to realize the folding of the two-part housings and the foldable terminals.

[0042] In the use of folding mobile phones and other foldable terminals, if the foldable terminal falls, the display screen of the foldable terminal may be damaged.

[0043] Therefore, the present application provides a folding mechanism and a foldable terminal to reduce the risk of damage to the corresponding display screen.

[0044] Referring to Fig. 1, the foldable terminal 100 provided by the present application can include but is not limited to a mobile phone, a tablet computer, a notebook computer, a handheld computer, a netbook, and the like. The specific embodiments of the present application mainly take the folding mobile phone as an example to illustrate the foldable terminal 100. In the absence of obvious conflicts, the following structures can also be applied to other foldable terminals 100 except for the folding mobile phone.

[0045] Referring to FIGS. 1, 2 and 3, the foldable terminal 100 includes a foldable mechanism 110, a display screen 120 and a housing 130; the display screen 120 includes a first display portion 121, a second display portion 122 and a foldable portion 123, the foldable portion 123 is disposed between the first display portion 121 and the second display portion 122; the display screen 120 can be integrally provided as a flexible display screen, so that the foldable portion 123 can be folded; of course, the display screen 120 can also be provided as a flexible structure only for the foldable portion 123, and the present embodiment does not limit this.

[0046] Referring to FIGS. 2 and 3, the housing 130 includes a first housing 131 and a second housing 132, the foldable mechanism 110 is connected between the first housing 131 and the second housing 132, and the two sides of the foldable mechanism 110 are respectively connected to the first housing 131 and the second housing 132 (including fixed connection and movable connection through a sliding groove or the like). The first display portion 121 is connected to the first housing 131, and the second display portion 122 is connected to the second housing 132. Referring to FIG. 4, one side of the first housing 131 facing the second housing 132 can be provided with a first accommodating opening 133, and one side of the second housing 132 facing the first housing 131 is provided with a second accommodating opening 134, the first accommodating opening 133 and the second accommodating opening 134 form an accommodating space, and the foldable mechanism 110 is at least partially accommodated in the accommodating space.

[0047] Referring to FIG. 1, the foldable terminal 100 is in a folded state through the above foldable mechanism 110; the foldable terminal 100 can be unfolded around the axis M in FIG. 1 in the direction of the dashed arrow in FIG. 1, for example, to the unfolded state shown in FIG. 2.

[0048] In the related art, referring to FIGS. 5 and 6, the foldable mechanism 110a includes a base 111a, a first swing arm 112a, a connecting block 113a and a door plate 115a, the connecting block 113a is used to connect the housing of the foldable terminal 110a, and the door plate 115a is used to support the display screen of the foldable terminal 110a. Referring to FIG. 5, the first end of the first swing arm 112a is connected to the connecting block 113a in a straight sliding groove, and the second end of the first swing arm 112a is rotatably connected to the base 111a; referring to FIG. 6, the first swing arm 112a is connected to the door plate 115a in an arc-shaped sliding groove.

[0049] In the related art, when the foldable terminal 110a experiences an angle fall (the corner position of the foldable terminal 110a contacts a ground point when falling) or an edge fall (the edge position of the foldable terminal 110a contacts a ground line when falling), the first swing arm 112a has difficulty playing a supporting effect on the connecting block 113a and has difficulty playing a supporting effect on the door plate 115a. It can be understood that when the foldable terminal 110a experiences an angle fall or an edge fall, the connecting block 113a and the door plate 115a move relative to the base 111a with the corresponding housing, and the invasion amount of the connecting block 113a and the door plate 115a towards the door plate and the display screen is large, for example, the connecting block 113a and the door plate 115a on the left in FIGS. 5 and 6 will move towards the right, thereby impacting the display screen on the inner side, increasing the risk of damage to the display screen.

[0050] Based on the analysis of the above related art, FIG. 7 and FIG. 8 show a connection diagram of the foldable mechanism 100 in an embodiment of the present application; it can be understood that, in order to reduce the mutual occlusion between the constituent components and facilitate the understanding of the connection relationship of the foldable mechanism 100, only part of the entity structure of some constituent components of the foldable mechanism 100 is shown, and the other part of the entity structure is shown by lines. In FIG. 7 and FIG. 8, the black solid origin represents a fixed connection at this point, and the hollow circle represents a high pair connection (the high pair connection can be understood as that the two components connected by point contact or line contact). Referring to FIG. 7, FIG. 8, FIG. 9 or FIG. 10, in an embodiment of the present application, the foldable mechanism 110 can be used in the foldable terminal 100 shown in FIG. 1 to FIG. 4; the foldable mechanism 110 includes a base 111, a first swing arm 112, a connecting block 113, a stop arm 114 and a door plate 115, and the connecting block 113 is used to connect the shell 130 of the foldable terminal 100. The door plate 115 is used to support the display screen 120 of the foldable terminal 100, for example, referring to FIG. 9, the water drop-shaped part of the display screen 120 in the folded state, or supporting the display screen 120 in the unfolded state. At least one of the connecting block 113 and the stop arm 114 is connected with the door plate 115, including that the door plate 115 is connected with the connecting block 113 and the stop arm 114 respectively, and the door plate 115 is fixedly connected with the connecting block 113 (even provided as one-piece), the door plate 115 is fixedly connected with the stop arm 114 (even provided as one-piece), etc. For example, in FIG. 7, one end of the door plate 115 is low-pair connected with the connecting block 113, and the other end of the door plate 115 is high-pair connected with the stop arm 114; or, in FIG. 8, one end of the door plate 115 is low-pair connected with the connecting block 113, and the other end of the door plate 115 is high-pair connected with the first swing arm 112. Among them, the connecting block 113, the door plate 115 and the stop arm 114 (or the first swing arm 112) can form a four-bar mechanism or a crank slider mechanism, so that the door plate 115 is driven by the connecting block 113 to rotate relative to the door plate 115 when the connecting block 113 rotates relative to the first swing arm 112.

[0051] Referring to FIG. 7 or FIG. 8, the first end of the first swing arm 112 is connected with the connecting block 113, for example, in the form of low pair connection such as shaft hole cooperation, slider slot cooperation, etc.; the second end of the first swing arm 112 is rotationally connected with the base 111 so as to realize folding or unfolding of the foldable mechanism 110 and the foldable terminal 100, for example, in the form of low pair connection such as shaft hole cooperation, curved slider slot cooperation, etc. The first end of the stop arm 114 is connected with the connecting block 113, and the second end of the stop arm 114 is connected with the first swing arm 112; wherein the first end and the second end of the stop arm 114 can be understood as different end portions of the stop arm 114, which can be two opposite ends or two relatively close end portions. The stop arm 114 is provided with a first abutting body (for example, the arc-shaped plate 1141 in the figure), and the side of the first abutting body away from the base 111 is used for surface contact with the connecting block 113; the end of the stop arm 114 towards the base 111 is used for abutting the first swing arm 112, for example, the stop arm 114 is driven by the connecting block 113 to move to abut the first swing arm 112. It can be understood that the above-mentioned first abutting body (for example, the arc-shaped plate 1141 in the figure) can be arranged at the first end of the stop arm 114 to realize the connection of the first end of the stop arm 114 with the connecting block 113; of course, the above-mentioned first abutting body (for example, the arc-shaped plate 1141 in the figure) can not be arranged at the first end of the stop arm 114, and the first end of the stop arm 114 is additionally connected with the connecting block 113 in the form of low pair connection such as shaft hole cooperation, slider slot cooperation, etc., which is not limited in the present embodiment.

[0052] Wherein, the first swing arm 112 can be configured to rotate relative to the base 111 to a folded state and an unfolded state, to respectively correspond to the folded state of the foldable terminal 100 in FIG. 1 and the unfolded state of the foldable terminal 100 in FIG. 2. Referring to FIG. 7, the first swing arm 112 and the base 111 enclose a first enclosed angle N in the folded state, and the first swing arm 112 and the base 111 enclose a second enclosed angle (for example, an angle of about 180 degrees) in the unfolded state. The first enclosed angle N is smaller than the second enclosed angle (for example, an angle of about 180 degrees).

[0053] Wherein, referring to FIG. 7 or FIG. 8, the above-mentioned foldable mechanism 110 can be provided to, in the folded state, the side of the first abutting body (for example, the arc-shaped plate 1141 in the figure) away from the base 111 surface contacts with the connecting block 113, for example, the upper surface of the arc-shaped plate 1141 in FIG. 1 surface contacts with the connecting block 113; the end of the stop arm 114 towards the base 111 is used for abutting the first swing arm 112, for example, the end portion of the stop arm 114 close to the A1 position in FIG. 9 is used for moving to abut the first swing arm 112 with the connecting block 113.

[0054] In some embodiments, referring to FIG. 7 or FIG. 8, the foldable mechanism 110 further comprises a second swing arm 116, a first end of the second swing arm 116 is connected with the connecting block 113, for example, in the form of a low pair connection such as shaft hole cooperation, sliding block and sliding groove cooperation, etc.; a second end of the second swing arm 116 is rotationally connected with the base 111, for example, in the form of a low pair connection such as shaft hole cooperation, sliding block and sliding groove cooperation, etc. The first swing arm 112 and the second swing arm 116 are configured to be driven to rotate relative to the base 111 by the connecting block 113 when the connecting block 113 rotates relative to the first swing arm 112; for example, a four-bar mechanism or a crank slider mechanism can be formed between the base 111, the first swing arm 112, the second swing arm 116 and the connecting block 113, so as to realize the driving of the connecting block 113 to the first swing arm 112 and the second swing arm 116, wherein the connecting block 113 can move with the rotation of the shell of the foldable terminal 100 by the user.

[0055] In FIG. 7 or FIG. 8, the connection positions of the first end and the second end of the second swing arm 116 are only for illustration to facilitate understanding of the above connection relationship between the base 111, the first swing arm 112, the second swing arm 116 and the connecting block 113.

[0056] In some embodiments, referring to FIG. 7 or FIG. 8, the foldable mechanism 110 comprises two sets of swing assemblies, which are respectively arranged on opposite sides of the base 111, for example, on the left and right connections of the base 111 in FIG. 7 or FIG. 8, so that the two sets of swing assemblies can swing around the Y-axis direction; wherein the swing assembly comprises the above-mentioned first swing arm 112, the connecting block 113, the stop arm 114 and the door plate 115, and the swing assembly can further comprise the above-mentioned second swing arm 116.

[0057] It can be understood that, referring to FIG. 7 or FIG. 8, the first shell 131 and the second shell 132 can be arranged to be connected with the connecting blocks 113 of the two sets of swing assemblies, for example, the first shell 131 is connected with the connecting block 113 on the left side, and the second shell 132 is connected with the connecting block 113 on the right side. In addition to the door plates 115 on the left and right sides of the water drop shape in FIG. 7 or FIG. 8, the foldable mechanism 110 can further comprise a middle door plate between the door plates 115 on the left and right sides.

[0058] In the above embodiment, referring to FIG. 9 and FIG. 10, when the corresponding foldable mechanism 110 of the foldable terminal 100 falls at an angle or vertically, the connecting block 113 moves with the corresponding housing (the first housing 131 or the second housing 132) relative to the base 111; for example, when the foldable mechanism 110 falls vertically and hits the ground in FIG. 9 and FIG. 10, the connecting block 113 moves with the corresponding housing (the first housing 131 or the second housing 132) in the downward direction in the figure; the first abutting body (for example, the arc-shaped plate 1141 in the figure) in surface contact with the connecting block 113 can improve the attitude stability of the connecting block 113, and is conducive to smoothly moving the first abutting body with the connecting block 113 to abut the first swing arm 112, for example, the first abutting body smoothly moves downward to the A1 position in the figure to abut the first swing arm 112 in FIG. 9 and FIG. 10.

[0059] In the above embodiment, referring to FIG. 9 and FIG. 10, when the corresponding foldable mechanism 110 of the foldable terminal 100 falls at an angle or vertically, the connecting block 113 moves with the corresponding housing (the first housing 131 or the second housing 132) relative to the base 111; for example, when the foldable mechanism 110 falls vertically and hits the ground in FIG. 9 and FIG. 10, the connecting block 113 moves with the corresponding housing (the first housing 131 or the second housing 132) in the downward direction in the figure; the first abutting body (for example, the arc-shaped plate 1141 in the figure) in surface contact with the connecting block 113 can improve the attitude stability of the connecting block 113, and is conducive to smoothly moving the first abutting body with the connecting block 113 to abut the first swing arm 112, for example, the first abutting body smoothly moves downward to the A1 position in the figure to abut the first swing arm 112 in FIG. 9 and FIG. 10.

[0060] In some embodiments, referring to FIG. 11 and FIG. 12 (wherein FIG. 11 hides the door panel 115 for showing more structures), the first abutting body comprises an arc-shaped plate 1141, and the connecting block 113 is provided with an arc-shaped slot 1131, the axis of the arc-shaped plate 1141 and the axis of the arc-shaped slot 1131 are respectively parallel to the rotation axis of the first swing arm 112, for example, parallel to the Y-axis direction in the figure; wherein the axis of the arc-shaped plate 1141 and the axis of the arc-shaped slot 1131 can be understood as the central axis of the arc surface, for example, the arc-shaped plate 1141 and the arc-shaped slot 1131 can be respectively formed by stretching the corresponding arc along the axis to form the arc surface. The arc-shaped plate 1141 extends into the arc-shaped slot 1131, and the side of the arc-shaped plate 1141 away from the base 111 abuts the arc-shaped slot 1131, for example, the upper side of the arc-shaped plate 1141 abuts the arc-shaped slot 1131 in the figure.

[0061] In this embodiment, the side of the arc-shaped plate 1141 away from the base 111 abuts the arc-shaped slot 1131, thereby increasing the abutting area through the arc-shaped plate 1141, and the arc-shaped plate 1141 in surface contact with the connecting block 113 can further improve the posture stability relative to the connecting block 113, which is conducive to further reducing the intrusion amount of the connecting block 113 towards the door panel 115 and the corresponding display screen 120, and is conducive to further reducing the breakage risk of the corresponding display screen 120.

[0062] In some embodiments, referring to FIG. 11 and FIG. 12, the side of the arc-shaped plate 1141 towards the base 111 is also provided to abut the arc-shaped slot 1131, thereby further increasing the surface contact of the arc-shaped plate 1141 with the connecting block 113, so that the arc-shaped plate 1141 can further improve the posture stability of the stop arm 114 relative to the connecting block 113, which is conducive to further reducing the intrusion amount of the connecting block 113 towards the door panel 115 and the corresponding display screen 120, and is conducive to further reducing the breakage risk of the corresponding display screen 120.

[0063] In some embodiments, referring to FIG. 11 and FIG. 12, the side of the stop arm 114 away from the door panel 115 is provided with a first accommodating recess 1142, and the connecting block 113 is provided with a connecting cantilever 1132, the connecting cantilever 1132 extends into the first accommodating recess 1142 in the direction towards the door panel 115, for example, the connecting cantilever 1132 extends into the accommodating recess 1142 from the left in FIG. 12, thereby improving the compactness of the foldable mechanism 110 and reducing the occupied space of the foldable mechanism 110. Referring to FIG. 12, the first accommodating recess 1142 can be provided to penetrate the stop arm 114.

[0064] In some embodiments, referring to FIGS. 11 and 12, the connecting cantilever 1132 is arranged on one side of the arc-shaped plate 1141 facing the base 111 from the direction of the connecting block 113 to the base 111; a gap between the connecting cantilever 1132 and the connecting block 113 forms an arc-shaped slot 1131, and the arc-shaped plate 1141 is suspended along one end of the rotation axis of the first swing arm 112 and forms the above-mentioned first accommodating recess 1142 with the end surface of the stop arm 114, thereby further improving the compactness of the foldable mechanism 110 and further reducing the occupied space of the foldable mechanism 110.

[0065] In some embodiments, referring to FIGS. 11 and 13, the side of the stop arm 114 away from the door panel 115 is provided with a stop protrusion 1143, and the end surface of the stop protrusion 1143 away from the base 111 is used to be in surface contact with the connecting block 113, for example, the upper end surface of the stop protrusion 1143 in the figure is used to be in surface contact with the connecting block 113; wherein the above-mentioned first abutting body includes the stop protrusion 1143. Wherein, the stop protrusion 1143 can be formed separately from the stop arm 114 or integrally formed (for example, integrally injection molded or integrally cast molded by using metal or plastic), and the present embodiment does not limit this.

[0066] In this embodiment, the end surface of the stop protrusion 1143 away from the base 111 is used to be in surface contact with the connecting block 113, thereby increasing the abutting area through the stop protrusion 1143, and the stop protrusion 1143 in surface contact with the connecting block 113 can further improve the posture stability relative to the connecting block 113, which is beneficial to further reduce the intrusion amount of the connecting block 113 towards the door panel 115 and the corresponding display screen 120, and is beneficial to further reduce the damage risk of the corresponding display screen 120.

[0067] In some embodiments, referring to FIG. 13, the end surface of the stop protrusion 1143 away from the base 111 is arranged in alignment with the part of the end surface of the stop arm 114 away from the base 111 and is used to abut the connecting block 113 together, thereby improving the installation convenience of the foldable mechanism 110. For example, the upper end surface of the stop protrusion 1143 and the part of the upper end surface of the stop arm 114 in FIG. 13 are arranged flush; wherein the flush arrangement can be understood as that the connection between the two end surfaces is smoothly transitioned.

[0068] In some embodiments, the stop protrusion 1143 and the arc-shaped plate 1141 are spaced apart along a direction parallel to the rotation axis of the first swing arm 112, for example, along the Y-axis direction in FIG. 11; and the position of the stop protrusion 1143 is located at the cross-sectional line at E in the figure. Referring to FIG. 11, the connecting cantilever 1132 extends into the first accommodating recess 1142 from the space between the stop protrusion 1143 and the arc-shaped plate 1141, thereby improving the compactness of the foldable mechanism 110 and reducing the occupied space of the foldable mechanism 110. Referring to FIG. 11, the connecting cantilever 1132 can include a longitudinal segment and a transverse segment connected to each other, the longitudinal segment is arranged in the space between the stop protrusion 1143 and the arc-shaped plate 1141, and the transverse segment can be arranged to extend along a direction parallel to the rotation axis of the first swing arm 112, and the transverse segment is arranged in the first accommodating recess 1142 of the stop arm 114, thereby improving the motion stability of the foldable mechanism 110.

[0069] In some embodiments, referring to FIGS. 11 and 14, the stop arm 114 is provided with a second accommodating recess 1144 on the side facing the door panel 115, which can be understood as that the second accommodating recess 1144 is recessed inward from the side surface of the stop arm 114 facing the door panel 115; and the first swing arm 112 is further provided with a second abutting body 1121, and the second abutting body 1121 is arranged to abut against the wall surface of the second accommodating recess 1144 away from the side of the door panel 115. For example, in FIG. 14, the second accommodating recess 1144 is recessed from right to left, and the surface of the left side of the second abutting body 1121 abuts against the wall surface of the second accommodating recess 1144 (the door panel 115 is on the right side). In this embodiment, the second accommodating recess 1144 and the second abutting body 1121 can be driven under normal folding conditions, for example, the second abutting body 1121 on the first swing arm 112 drives the stop arm 114 through the surface on the left side; when an angular drop or a vertical drop occurs, the second abutting body 1121 can move away from the wall surface of the second accommodating recess 1144; for example, referring to FIG. 10, the first swing arm 112 is bent by the abutment of the lower end of the stop arm 114 (at A1 in FIG. 10), so that the wall surface of the second accommodating recess 1144 and the second abutting body 1121 relatively move away, thereby reducing the risk of breakage or bending of the second abutting body 1121 due to impact, and improving the durability of the foldable mechanism 110.

[0070] In some embodiments, referring to FIG. 11, the second accommodating recess 1144 is arranged at the end of the stop arm 114 facing the first swing arm 112 along a direction parallel to the rotation axis of the first swing arm 112, for example, at the left end of the stop arm 114 in FIG. 11; and the second abutting body 1121 is arranged at the end of the first swing arm 112 facing the stop arm 114, for example, at the right end of the first swing arm 112 in FIG. 11, thereby improving the compactness of the foldable mechanism 110 and reducing the occupied space of the foldable mechanism 110.

[0071] In some embodiments, referring to FIGS. 11 and 14, the first swing arm 112 is provided with a third accommodating recess 1122 on a side facing the door plate 115. It can be understood that the third accommodating recess 1122 is recessed inward from the right side surface of the first swing arm 112 in FIG. 14. The third accommodating recess 1122 can be provided to penetrate the first swing arm 112. The stop arm 114 is at least partially accommodated in the third accommodating recess 1122 at an end (for example, the lower end of the stop arm 114 in the figure) facing the base 111, thereby improving the compactness of the foldable mechanism 110 and reducing the occupied space of the foldable mechanism 110. In addition, in the folded state, the stop arm 114 is closer to the first swing arm 112, thereby reducing the risk of extrusion to the display screen 120 and the risk of damage to the corresponding display screen 120.

[0072] In some embodiments, referring to FIG. 14, the end (for example, the lower end of the stop arm 114 in the figure) of the stop arm 114 facing the base 111 is spaced apart from the wall surface of the third accommodating recess 1122. The end of the stop arm 114 facing the base 111 is used to move to abut against the wall surface of the third accommodating recess 1122, thereby buffering the impact force and improving the durability of the foldable mechanism 110 and the foldable terminal 100. In addition, in the case where no falling occurs in ordinary times, the gap between the end of the stop arm 114 and the wall surface of the third accommodating recess 1122 is beneficial to improve the smoothness of the movement of the foldable mechanism 110.

[0073] In some embodiments, referring to FIG. 14, at least one of the first swing arm 112 and the connecting block 113 is provided with a support strip 1123 extending in a direction parallel to the rotation axis of the first swing arm 112. The support strip 1123 is arranged on a side of the stop arm 114 away from the door plate 115. The support strip 1123 is used to abut against the side of the stop arm 114 away from the door plate 115, thereby reducing the risk of position abnormality of the stop arm 114 and improving the durability of the foldable mechanism 110 and the foldable terminal 100.

[0074] In some embodiments, referring to FIG. 15, one end of the door plate 115 is rotationally connected with the connecting block 113. The stop arm 114 is provided with a connecting column 1145 extending in a direction parallel to the rotation axis of the first swing arm 112, for example, extending in a direction perpendicular to the plane of the figure. The door plate 115 is provided with a connecting protrusion 1151 on a side facing the stop arm 114. The connecting protrusion 1151 is provided with a connecting groove 1152. The connecting column 1145 extends into the connecting groove 1152, thereby improving the compactness of the foldable mechanism 110 and reducing the occupied space of the foldable mechanism 110. In addition, by providing the connecting protrusion 1151, it is beneficial to reduce the deformation amount of the door plate 115 and reduce the risk of damage to the display screen 120 due to the deformation of the door plate 115.

[0075] In some embodiments, the connecting column 1145 is arranged as a flat column, and the connecting column 1145 is arranged spaced apart from the wall surface of the connecting groove 1152, thereby improving the movement flexibility of the foldable mechanism 110. In addition, the connecting column 1145 in the form of a flat column can reduce the swing amplitude of the door plate 115 towards the display screen 120, thereby reducing the risk of the door plate 115 impacting and damaging the display screen 120.

[0076] In some embodiments, one end of the door plate 115 is rotationally connected with the connecting block 113, and the other end of the door plate 115 is connected with the first swing arm 112 or the second swing arm 116, thereby improving the movement stability of the foldable mechanism 110.

[0077] It can be understood that, since the foldable terminal 100 adopts all the technical solutions of all the embodiments of the foldable mechanism 110 described above, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0078] The above describes only specific embodiments of the present application, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. The protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A foldable mechanism, characterized by, The foldable mechanism is used in a foldable terminal, and comprises a base, a first swing arm, a connecting block, a stop arm and a door plate. The connecting block is used to connect the shell of the foldable terminal. The door plate is used to support the display screen of the foldable terminal. At least one of the connecting block and the stop arm is connected with the door plate. The first end of the first swing arm is connected with the connecting block, and the second end of the first swing arm is rotationally connected with the base. The first end of the stop arm is connected with the connecting block, and the second end of the stop arm is connected with the first swing arm. The first abutting body is arranged on the stop arm, and the side of the first abutting body away from the base is used to abut against the connecting block. The one end of the stop arm towards the base is used to abut against the first swing arm.

2. The foldable mechanism of claim 1, wherein, The first abutting body comprises an arc-shaped plate. The connecting block is provided with an arc-shaped groove. The axis of the arc-shaped plate and the axis of the arc-shaped groove are parallel to the rotation axis of the first swing arm. The arc-shaped plate extends into the arc-shaped groove, and the side of the arc-shaped plate away from the base abuts against the arc-shaped groove.

3. The foldable mechanism of claim 2, wherein, The side of the arc-shaped plate towards the base abuts against the arc-shaped groove.

4. The foldable mechanism of claim 2, wherein, The side of the stop arm away from the door plate is provided with a first accommodating recess. The connecting block is provided with a connecting cantilever. The connecting cantilever extends into the first accommodating recess in the direction towards the door plate.

5. The foldable mechanism of claim 4, wherein, In the direction from the connecting block to the base, the connecting cantilever is arranged on the side of the arc-shaped plate towards the base. The gap between the connecting cantilever and the connecting block forms the arc-shaped groove. One end of the arc-shaped plate along the rotation axis of the first swing arm is suspended and forms the first accommodating recess with the end surface of the stop arm.

6. The foldable mechanism of claim 4, wherein, The side of the stop arm away from the door plate is provided with a stop protrusion. The end surface of the stop protrusion away from the base is used to abut against the connecting block. The first abutting body comprises the stop protrusion.

7. The foldable mechanism of claim 6, wherein, The end surface of the stop protrusion away from the base is arranged in alignment with the part of the end surface of the stop arm away from the base and is used to abut against the connecting block together. In the direction parallel to the rotation axis of the first swing arm, the stop protrusion and the arc-shaped plate are arranged in interval. The connecting cantilever extends into the first accommodating recess from the interval between the stop protrusion and the arc-shaped plate.

8. The foldable mechanism of claim 1, wherein, The side of the stop arm towards the door plate is provided with a second accommodating recess. The first swing arm is further provided with a second abutting body. The side of the second abutting body away from the door plate abuts against the wall surface of the second accommodating recess.

9. The foldable mechanism of claim 8, wherein, In the direction parallel to the rotation axis of the first swing arm, the second accommodating recess is arranged on the one end of the stop arm towards the first swing arm. The second abutting body is arranged on the one end of the first swing arm towards the stop arm.

10. The foldable mechanism of claim 8, wherein, The side of the first swing arm towards the door plate is provided with a third accommodating recess. The one end of the stop arm towards the base is at least partially accommodated in the third accommodating recess. The one end of the stop arm towards the base is arranged in interval with the wall surface of the third accommodating recess. The one end of the stop arm towards the base is used to move to abut against the wall surface of the third accommodating recess.

11. The foldable mechanism of claim 1, wherein, At least one of the first swing arm and the connecting block is provided with a support strip extending in a direction parallel to the rotation axis of the first swing arm; the support strip is arranged on a side of the stop arm away from the door panel, and is used to abut against a side of the stop arm away from the door panel.

12. The foldable mechanism of claim 1, wherein, One end of the door panel is rotationally connected to the connecting block, and the stop arm is provided with a connecting column extending in a direction parallel to the rotation axis of the first swing arm; The side of the door panel facing the stop arm is provided with a connecting protrusion, and the connecting protrusion is provided with a connecting groove; the connecting column extends into the connecting groove.

13. The foldable mechanism of claim 12, wherein, The connecting column is arranged as a flat column, and the connecting column is arranged in a spaced manner with the wall surface of the connecting groove.

14. The foldable mechanism of claim 12, wherein, The foldable mechanism further comprises a second swing arm, a first end of the second swing arm is connected to the connecting block, and a second end of the second swing arm is rotationally connected to the base; The first swing arm and the second swing arm are configured to be driven to rotate relative to the base by the connecting block when the connecting block rotates relative to the first swing arm.

15. The foldable mechanism of claim 14, wherein, One end of the door panel is rotationally connected to the connecting block, and the other end of the door panel is connected to the first swing arm or the second swing arm.

16. The foldable mechanism of any one of claims 1 to 15, wherein, The first swing arm is used to rotate relative to the base to a folded state and an unfolded state; the first swing arm and the base enclose a first enclosing angle in the folded state, and the first swing arm and the base enclose a second enclosing angle in the unfolded state; the first enclosing angle is smaller than the second enclosing angle; In the folded state, a side of the first abutting body away from the base is in surface contact with the connecting block, and one end of the stop arm facing the base is used to abut against the first swing arm.

17. The foldable mechanism of any one of claims 1 to 15, wherein, The foldable mechanism comprises two sets of swing assemblies, and the two sets of swing assemblies are arranged on opposite sides of the base; the swing assembly comprises the first swing arm, the connecting block, the stop arm and the door panel. 18.A foldable terminal, comprising: The foldable terminal comprises a shell and the foldable mechanism of claim 17; the shell comprises a first shell and a second shell, and the foldable mechanism is connected between the first shell and the second shell; the first shell and the second shell are respectively connected to the connecting blocks of the two sets of swing assemblies.

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