Outward flat-opening suspension lower hinge

Abstract

The utility model provides an outward side-hung lower hinge, which belongs to the technical field of door and window hardware and comprises a first mounting seat, a second mounting seat and a hinge body. The first end of the swing arm is rotatably connected with the first mounting seat; the second mounting base is hinged to and slidably connected with the second end of the swing arm, and a containing groove is formed in the second mounting base; the clamping assembly is hinged to the swing arm and slidably connected into the containing groove, the clamping assembly is provided with an elastic buckling piece, and the side wall of the containing groove is provided with a clamping part used for being connected with the buckling piece in a clamped mode; and the transmission rod is in sliding connection with the second mounting seat, and the transmission rod is provided with a blocking edge which forms motion interference with the buckling piece.

Description

Technical Field

[0001] This utility model relates to the field of door and window hardware technology, specifically to an outward-opening, suspended lower hinge. Background Technology

[0002] With the continuous development of building door and window technology, outward-opening suspended hinges have been widely used because they can simultaneously achieve opening and hovering functions. These hinges need to provide reliable locking when the door or window is opened to a specific angle to ensure the stability of the door or window in the hovering state, especially in the face of strong winds or its own weight, to prevent accidental closure, thereby ensuring safety and user experience.

[0003] In related technologies, the locking structure of outward-opening suspended hinges often adopts a mechanical cooperation method of rivets and retaining springs. For example, when the window sash is open, the hinge arm is inserted into the groove of the retaining spring by sliding the rivet to achieve suspension and fixation. However, the cooperation between the rivet and the retaining spring depends on the sliding friction and the elastic deformation of the retaining spring. After long-term use, wear can easily lead to an increase in the cooperation gap, reducing the locking reliability. In addition, when the window sash is subjected to strong wind impact or has a large weight, the rivet can easily come out of the retaining spring, causing the window sash to close suddenly, which poses a safety hazard. Utility Model Content

[0004] In view of the above problems, this utility model provides an outward-opening suspended lower hinge, the outward-opening suspended lower hinge including: a first mounting base;

[0005] A swing arm, the first end of which is rotatably connected to the first mounting base;

[0006] The second mounting base is hinged and slidably connected to the second end of the swing arm, and the second mounting base is provided with a receiving groove.

[0007] A locking assembly is hinged to and slidably connected to the swing arm within the receiving groove. The locking assembly is provided with an elastic buckle, and the side wall of the receiving groove is provided with a snap-fit ​​part for snapping with the buckle.

[0008] A transmission rod is slidably connected to the second mounting base, and the transmission rod is provided with a stop for abutting against the buckle.

[0009] In one embodiment, a hinge linkage assembly is provided between the first mounting base and the swing arm, and the first mounting base and the swing arm are rotatably connected through the hinge linkage assembly, the hinge linkage assembly comprising:

[0010] A first hinge member, the first end of which is hinged to the first mounting base, and the second end of which is hinged to and slidably connected to the swing arm;

[0011] The second hinge member has a first end that is hinged and slidably connected to the first mounting base, and a second end that is hinged to the swing arm. The second hinge member and the first hinge member are arranged crosswise and are hinged to each other at the intersection.

[0012] In one embodiment, the second end of the first hinge member is provided with a first connecting shaft, the swing arm is provided with a first guide groove, and the first connecting shaft is connected to the first guide groove; the first end of the second hinge member is provided with a second connecting shaft, the first mounting base is provided with a second guide groove, and the second connecting shaft is connected to the second guide groove.

[0013] In one embodiment, a third hinge is provided between the second mounting base and the swing arm, one side of the third hinge is hinged to the second mounting base, and the other side of the third hinge is hinged to the swing arm.

[0014] In one embodiment, the transmission rod is connected to a first locking unit, and the swing arm is provided with a second locking unit at a position corresponding to the movement trajectory of the first locking unit. When the transmission rod and the swing arm move relative to each other to a predetermined position, the first locking unit engages with the second locking unit.

[0015] In one embodiment, the first locking unit includes at least one recessed locking groove, and the second locking unit includes a raised locking point structure, wherein when the swing arm and the transmission rod rotate relative to each other to a predetermined angle, the locking point structure is inserted into the locking groove to form a snap-fit.

[0016] In one embodiment, the locking assembly further includes a carrier member, the latching member is hinged to the carrier member, and an elastic member is provided between the latching member and the carrier member. The elastic member is used to provide elastic force to the latching member, and the carrier member is used to support the latching member to slide within the receiving groove.

[0017] In one embodiment, the buckle is provided with a first shaft hole, the carrier is provided with a second shaft hole, the swing arm is provided with a third shaft hole, the bottom of the receiving groove is provided with a third guide groove, and the third connecting shaft is sequentially connected to the first shaft hole, the second shaft hole, the third guide groove and the third shaft hole.

[0018] In one embodiment, the fastener has a first protrusion and the latching part is a second protrusion provided on the side wall of the receiving groove. When the first protrusion moves to the position of the second protrusion, the second protrusion interlocks with the first protrusion.

[0019] In one embodiment, the fastener has a guide slope on one side, and the stop edge is used to abut against the guide slope to drive the fastener away from the snap-fit ​​portion.

[0020] The above-described one or more technical solutions in the embodiments of this application have at least one or more of the following technical effects:

[0021] In this embodiment of the utility model, an outward-opening suspended hinge is provided. When the transmission rod is in the first position, the stop edge abuts against the fastener. At this time, the fastener is in a compressed state and cannot engage with the locking part on the side wall of the receiving groove. When the user begins to open the door or window, the user drives the transmission rod to move from the first position to the second position. At the same time, the first mounting base, the swing arm, and the second mounting base will rotate and open relative to each other. The swing arm will drive the locking assembly to move in the receiving groove along the direction of the transmission rod's movement. The stop edge of the transmission rod gradually disengages from the fastener, and finally the fastener is in an elastic tension state. Under the action of force, it pops out and locks onto the locking part provided on the side wall of the receiving groove, thus fixing the door leaf downward. Compared with the rivet and spring structure in the prior art, the buckle in this embodiment pops out and locks onto the locking part under the action of elastic force, making it less likely to detach from the locking part and providing a more secure fixation. When it is necessary to close the window, the user drives the transmission rod to move from the second position to the first position. The baffle of the transmission rod abuts against the buckle and drives the buckle to detach from the locking part. At this time, the buckle is released from the locking part, thereby completing the closing of the door and window.

[0022] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is an exploded view of the overall structure in an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the second mounting base in an embodiment of the present utility model;

[0026] Figure 3 This is a three-dimensional schematic diagram of the card slot component in an embodiment of the present utility model;

[0027] Figure 4 This is a three-dimensional schematic diagram of the transmission rod in an embodiment of the present utility model;

[0028] Figure 5 This is a schematic diagram of the closed state of the outward-opening suspension lower hinge in an embodiment of this utility model;

[0029] Figure 6 This is a schematic diagram of the transmission rod hidden in the closed state of the external swing-opening lower hinge in an embodiment of this utility model;

[0030] Figure 7 This is a schematic diagram of the outward-opening suspension lower hinge in the open state in an embodiment of this utility model;

[0031] Figure 8 This is a schematic diagram of the transmission rod hidden in the open state of the external swing-open suspension lower hinge in an embodiment of this utility model;

[0032] Figure 9 This is a schematic diagram of the suspension state of the lower hinge of the outward-opening suspension in an embodiment of this utility model;

[0033] Figure 10 This is a schematic diagram of the transmission rod hidden in the lower hinge suspension state of the outward swing suspension in an embodiment of this utility model;

[0034] Figure 11 This is a schematic diagram of a door and window with an outward-opening, suspended lower hinge in the closed state, as described in this utility model embodiment.

[0035] Figure 12 This is a schematic diagram of a door and window in the outward-opening, suspended, lower-hinged state according to an embodiment of the present utility model;

[0036] Figure 13 This is a schematic diagram of a door and window in the outward-opening, suspended, lower-hinged state according to an embodiment of the present utility model.

[0037] Explanation of reference numerals in the attached drawings: 100, first mounting base; 110, second guide groove; 200, swing arm; 210, first guide groove; 220, third hinge; 230, second locking unit; 231, locking point structure; 240, third shaft hole; 300, second mounting base; 310, receiving groove; 311, snap-fit ​​part; 311a, second protrusion; 312, third guide groove; 400, locking assembly; 410, fastener. ; 411, First shaft hole; 412, First protrusion; 413, Guide slope; 420, Bearing member; 421, Second shaft hole; 430, Elastic member; 500, Transmission rod; 510, Stop; 520, First locking unit; 521, Locking groove; 600, Hinge linkage assembly; 610, First hinge member; 611, First connecting shaft; 620, Second hinge member; 621, Second connecting shaft; 700, Third connecting shaft. Detailed Implementation

[0038] The overall concept of the technical solution provided by this utility model is as follows:

[0039] Please see Figures 1 to 11 The outward-opening suspension lower hinge includes:

[0040] First mounting bracket 100; The first mounting bracket 100 is used to fix to the frame of a door or window. Common fixing methods include bolt connection, welding or the use of special fasteners. Among them, bolt connection is the most commonly used method because it is easy to install and disassemble and can provide sufficient fixing strength. The first mounting bracket 100 is usually made of high-strength metal materials, such as stainless steel, aluminum alloy or galvanized steel, to ensure that it has sufficient strength and corrosion resistance.

[0041] The first end of the swing arm 200 is rotatably connected to the first mounting base 100; this connection allows the swing arm 200 to rotate freely relative to the first mounting base 100 within a certain angle range.

[0042] The second mounting base 300 is hinged and slidably connected to the second end of the swing arm 200. The second mounting base 300 is provided with a receiving groove 310. The second mounting base 300 is hinged to the second end of the swing arm 200, allowing the swing arm 200 to rotate freely relative to the second mounting base 300 within a certain angle range. The second mounting base 300 and the swing arm 200 are also slidably connected, allowing the swing arm 200 to have a certain relative movement with the second mounting base 300 during movement. The receiving groove 310 is used to accommodate the locking assembly 400. The second mounting base 300 is used to be installed on the door or window sash and can be fixed to the door or window sash by bolts.

[0043] When the user starts to open the door or window, the door or window sash is pushed outward by the handle or by applying external force directly. As the door or window sash rotates, the swing arm 200 rotates around the first mounting base 100. The second mounting base 300 rotates and slides relative to the swing arm 200 as the door or window sash rotates.

[0044] The locking assembly 400 is hinged to and slidably connected to the swing arm 200 within the receiving groove 310. The locking assembly 400 is equipped with a resilient fastener 410, and the side wall of the receiving groove 310 is provided with a locking part 311 for engaging with the fastener 410. The main function of the locking assembly 400 is to lock the door or window in a suspended state by means of the fastener 410 engaging with the locking part 311 on the side wall of the receiving groove 310 when the door or window is opened to a specific angle, thus ensuring the stability of the door or window in the suspended state. The locking assembly 400 is designed to prevent accidental closure due to external forces (such as wind or its own weight). The latching element 410 is the core component of the locking assembly 400. It is elastic in itself or through a connecting elastic element 430. The latching element 410 is typically designed with a protrusion or hook-like structure. The locking portion 311 is a protrusion or groove structure on the side wall of the receiving groove 310. The locking portion 311 is used to pop out under elastic force and form a locking interlock with the latching element 410, thus achieving the locking function. When the door or window is closed, the latching element 410 is away from the locking portion 311. As the door or window sash rotates open, the swing arm 200 drives the locking assembly 400 to slide within the receiving groove 310, causing the latching element 410 to continuously move closer to the locking portion 311.

[0045] A transmission rod 500 is slidably connected to the second mounting base 300. The transmission rod 500 is provided with a stop 510 for abutting against the latching member 410. The transmission rod 500 is a key control component, mainly controlling the pop-out and compression of the latching member 410 through the cooperation of its stop 510 and the latching member 410. The transmission rod 500 is slidably connected to the second mounting base 300, allowing relative sliding movement between the transmission rod 500 and the second mounting base 300 during movement. The stop 510 is a protruding part on the transmission rod 500. When the transmission rod 500 moves to a specific position, the stop 510 contacts the latching member 410, driving the latching member 410 to perform corresponding movements, and the stop 510 is used to abut against the latching member 410 to prevent it from popping out.

[0046] Please see Figure 5 , Figure 6 and Figure 9 When the doors and windows are closed, the latching member 410 is positioned away from the engaging part 311. Specifically, the latching member 410 is in an initial position within the receiving groove 310, with a certain distance between it and the engaging part 311. At this time, the stop 510 of the transmission rod 500 abuts against the latching member 410, compressing it and preventing it from engaging with the engaging part 311. Please refer to [link to relevant documentation]. Figure 9 , Figure 10 and Figure 13When the user applies external force to the door or window sash via the handle or directly, and begins to push the door or window to rotate outward, the swing arm 200, as a moving component connecting the first mounting base 100 and the second mounting base 300, begins to rotate around the first mounting base 100 and the second mounting base 300 as the door or window sash rotates. The movement of the swing arm 200 causes the locking assembly 400 to slide along a predetermined trajectory within the receiving groove 310, and the latch 410 gradually approaches the locking part 311. At the same time, the user can drive the transmission component to move along the direction from the first position to the second position through the transmission system inside the door or window. As the transmission rod 500 moves, the stop 510 will gradually disengage from the latch 410. When the swing arm 200 rotates to a specific angle, the fastener 410 moves to a position where it can engage with the locking part 311. At the same time, the stop 510 of the transmission rod 500 completely disengages from the fastener 410. The fastener 410 pops out under the action of elastic force and engages with the locking part 311. At this time, the door and window enter a suspended state.

[0047] When the transmission rod 500 is in the first position, the stop 510 abuts against the fastener 410. At this time, the fastener 410 is in a compressed state and cannot engage with the engaging part 311 on the side wall of the receiving groove 310. When the user starts to open the door or window, the user drives the transmission rod 500 to move from the first position to the second position. At the same time, the first mounting base 100, the swing arm 200, and the second mounting base 300 will rotate and open relative to each other. The swing arm 200 will drive the locking assembly 400 to move in the receiving groove 310 along the direction of movement of the transmission rod 500. The stop 510 of the transmission rod 500 gradually disengages from the fastener 410. Finally, the fastener 410 is engaged under the action of elastic tension. The latch 410 pops out and engages with the latching part 311 on the side wall of the receiving groove 310 to form a lock, and the door leaf is fixed in a downward suspension. Compared with the rivet and spring structure in the prior art, the latch 410 in this embodiment of the utility model pops out and engages with the latching part 311 under the action of elastic force, and is not easy to detach from the latching part 311, and the fixing effect is more firm. When it is necessary to close the window, the user drives the transmission rod 500 to move from the second position to the first position. The baffle 510 of the transmission rod 500 abuts against the latch 410 and drives the latch 410 to disengage from the latching part 311. At this time, the latch 410 and the latching part 311 are released from engagement, thereby completing the closing of the door and window.

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0049] Please see Figure 1 , Figures 7 to 10 A hinge linkage assembly 600 is provided between the first mounting base 100 and the swing arm 200. The first mounting base 100 and the swing arm 200 are rotatably connected by the hinge linkage assembly 600. The main function of the hinge linkage assembly 600 is to connect the first mounting base 100 and the swing arm 200, realizing a rotatable connection between the two, thereby supporting the opening and closing movements of the door and window. The hinge linkage assembly 600 includes:

[0050] The first hinge member 610 has its first end hinged to the first mounting base 100, and its second end hinged to and slidably connected to the swing arm 200. The hinge of the first end of the first hinge member 610 to the first mounting base 100 allows the first hinge member 610 to rotate around the first mounting base 100. The hinge of the second end of the first hinge member 610 to the swing arm 200 allows for a certain degree of relative sliding motion while the first hinge member 610 rotates relative to the swing arm 200, further enhancing the flexibility of the connection.

[0051] The second hinge member 620 has its first end hinged and slidably connected to the first mounting base 100, and its second end hinged to the swing arm 200. The second hinge member 620 and the first hinge member 610 are intersected and hinged to each other at the intersection. The first end of the second hinge member 620 is hinged and slidably connected to the first mounting base 100. This connection method allows the second hinge member 620 to rotate relative to the swing arm 200 while also having a certain degree of relative sliding motion, further enhancing the flexibility of the connection. The second end of the second hinge member 620 is hinged to the swing arm 200, enabling the second hinge member 620 to rotate around the swing arm 200. The intersecting arrangement of the second hinge member 620 and the first hinge member 610, and their mutual hinge at the intersection, forms a stable connection structure, ensuring the motion transmission and stability between the swing arm 200 and the first mounting base 100.

[0052] Please see Figure 1 and Figure 2The second end of the first hinge member 610 is provided with a first connecting shaft 611, and the swing arm 200 is provided with a first guide groove 210, and the first connecting shaft 611 is connected to the first guide groove 210; the first end of the second hinge member 620 is provided with a second connecting shaft 621, and the first mounting base 100 is provided with a second guide groove 110, and the second connecting shaft 621 is connected to the second guide groove 110. The first connecting shaft 611 is located at the second end of the first hinge member 610 and is connected to the swing arm 200 through the first guide groove 210. This connection method not only allows the first connecting shaft 611 to slide within the first guide groove 210, but also allows it to rotate at the connection point. The rotational movement allows the first hinge member 610 to rotate around the first connecting shaft 611, and the sliding movement allows the first hinge member 610 to move along the length of the swing arm 200 to adapt to the movement requirements of the door and window at different angles. The second connecting shaft 621 is located at the first end of the second hinge member 620 and is connected to the first mounting base 100 through the second guide groove 110. This connection method not only allows the second connecting shaft 621 to slide within the second guide groove 110, but also allows it to rotate at the connection point. The rotational movement allows the second hinge member 620 to rotate around the second connecting shaft 621, and the sliding movement allows the second hinge member 620 to move along the length of the first mounting base 100 to adapt to the movement requirements of the door and window at different angles.

[0053] Please see Figure 1 , Figure 9 and Figure 10 A third hinge 220 is provided between the second mounting base 300 and the swing arm 200. One side of the third hinge 220 is hinged to the second mounting base 300, and the other side of the third hinge 220 is hinged to the swing arm 200. The hinge of one side of the third hinge 220 to the second mounting base 300 allows relative rotational movement between the third hinge 220 and the second mounting base 300, forming a stable connection point. The hinge of the other side of the third hinge 220 to the swing arm 200 allows relative movement between the third hinge 220 and the swing arm 200, forming another stable connection point. By providing an additional connection point, the third hinge 220 enhances the connection stability between the second mounting base 300 and the swing arm 200, ensuring the smooth movement of the door and window during opening and closing.

[0054] Please see Figure 1 , Figures 5 to 10 The transmission rod 500 is connected to a first locking unit 520, and the swing arm 200 is provided with a second locking unit 230 at a position corresponding to the movement trajectory of the first locking unit 520. When the transmission rod 500 and the swing arm 200 move relative to each other to a predetermined position, the first locking unit 520 and the second locking unit 230 engage. Please refer to [link to relevant documentation]. Figures 5 to 8 , Figure 11 and Figure 12 When the doors and windows are closed or open, the first locking unit 520 and the second locking unit 230 are engaged, meaning they are locked together, preventing relative displacement between the swing arm 200 and the transmission rod 500, thus maintaining the stability of the doors and windows in the closed or open state; please refer to Figure 9 , Figure 10 and Figure 13 When the door or window needs to switch from the closed state to the suspended state, the locking mechanism needs to be released so that the door or window can be suspended and held at a specific angle. The transmission system inside the door or window (such as a handle) drives the transmission rod 500 to move. The movement of the transmission rod 500 causes the first locking unit 520 to move along a predetermined trajectory, thereby moving away from the second locking unit 230. When the first locking unit 520 moves away from the second locking unit 230, the lock between the swing arm 200 and the transmission rod 500 is released, and the two can move relative to each other. This relative displacement allows the door or window to transition from the closed state to the suspended state.

[0055] Please see Figure 1 , Figure 9 and Figure 10 The first locking unit 520 includes at least one recessed locking groove 521, and the second locking unit 230 includes a protruding locking point structure 231. When the swing arm 200 and the transmission rod 500 rotate relative to each other to a predetermined angle, the locking point structure 231 engages with the locking groove 521 to form a snap-fit. The main function of the locking point structure 231 is to cooperate with the locking groove 521 of the first locking unit 520 to form a mechanical interlock and realize the locking function.

[0056] Please see Figures 1 to 3 The locking assembly 400 also includes a carrier 420, with the latching member 410 hinged to the carrier 420. An elastic member 430 is provided between the latching member 410 and the carrier 420, providing elastic force to the latching member 410. The carrier 420 supports the latching member 410 as it slides within the receiving groove 310. The carrier 420 is connected to the latching member 410 via a hinge, allowing the latching member 410 to rotate at a certain angle during movement. The main function of the latching member 410 is to lock with the latching part 311 on the side wall of the receiving groove 310, enabling the door and window to be suspended and locked. The main function of the elastic member 430 is to provide elastic force to the latching member 410, ensuring that the latching member 410 can reliably pop out and compress during movement. The elastic member 430 is typically made of materials such as springs, torsion springs, or elastic rubber.

[0057] Please see Figure 1 and Figure 3The buckle 410 is provided with a first shaft hole 411, the bearing 420 is provided with a second shaft hole 421, the swing arm 200 is provided with a third shaft hole 240, the bottom of the receiving groove 310 is provided with a third guide groove 312, and the third connecting shaft 700 is connected to the first shaft hole 411, the second shaft hole 421, the third guide groove 312 and the third shaft hole 240 in sequence. The third connecting shaft 700 passes sequentially through the first shaft hole 411, the second shaft hole 421, the third guide groove 312, and the third shaft hole 240, connecting the fastener 410, the carrier 420, and the swing arm 200 into a whole. The third connecting shaft 700 not only serves as a connector but also transmits motion, allowing the fastener 410 to slide within the receiving groove 310 as the swing arm 200 moves. When the door or window is opened or closed, the swing arm 200 rotates around the first mounting base 100. The motion of the swing arm 200 is transmitted to the locking assembly 400 through the third connecting shaft 700, causing the fastener 410 and the carrier 420 to slide accordingly within the receiving groove 310. The third guide groove 312 guides the movement trajectory of the third connecting shaft 700, ensuring that the fastener 410 remains stable during movement and avoiding deviation or jamming.

[0058] Please see Figure 2 and Figure 3 The fastener 410 has a first protrusion 412, and the engaging part 311 is a second protrusion 311a located on the side wall of the receiving groove 310. When the first protrusion 412 moves to the position of the second protrusion 311a, the second protrusion 311a interlocks with the first protrusion 412. The first protrusion 412 is a protruding part on the fastener 410, usually designed as a protruding structure with a certain height and shape. The second protrusion 311a is also a protruding part on the side wall of the receiving groove 310. The fastener 410 slides in the receiving groove 310. The main function of the second protrusion 311a is to cooperate with the first protrusion 412 of the fastener 410 to form a mechanical interlock and realize the locking function. The second protrusion 311a is located at a specific position in the receiving groove 310 to ensure that when the fastener 410 slides to the predetermined position, the first protrusion 412 can be accurately aligned with it and form an interlock.

[0059] Please see Figure 2 and Figure 3 The fastener 410 has a guide slope 413 on one side, and the retaining edge 510 is used to abut against the guide slope 413 to drive the fastener 410 to disengage from the engaging part 311. The guide slope 413 is located on one side of the fastener 410 and can be designed as an inclined plane or curved surface. When the user begins to close the door or window, the drive transmission rod 500 moves, and the retaining edge 510 of the transmission rod 500 moves along the guide slope 413 and gradually abuts against the fastener 410. As the retaining edge 510 abuts against the fastener, the fastener 410 is subjected to an outward pushing force and begins to disengage from the engaging part 311.

[0060] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0061] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this utility model without departing from the spirit and scope of the embodiments of this utility model. Therefore, if these modifications and variations to the embodiments of this utility model fall within the scope of the claims of this utility model and their equivalents, then this utility model also intends to include these modifications and variations.

Claims

1. An outward-opening, suspended lower hinge, characterized in that, include: First mounting base; A swing arm, the first end of which is rotatably connected to the first mounting base; The second mounting base is hinged and slidably connected to the second end of the swing arm, and the second mounting base is provided with a receiving groove. A locking assembly is hinged to and slidably connected to the swing arm within the receiving groove. The locking assembly is provided with an elastic buckle, and the side wall of the receiving groove is provided with a snap-fit ​​part for snapping with the buckle. A transmission rod is slidably connected to the second mounting base, and the transmission rod is provided with a stop for abutting against the buckle.

2. The outward-opening suspended lower hinge according to claim 1, characterized in that, A hinge linkage assembly is provided between the first mounting base and the swing arm, and the first mounting base and the swing arm are rotatably connected through the hinge linkage assembly. The hinge linkage assembly includes: A first hinge member, the first end of which is hinged to the first mounting base, and the second end of which is hinged to and slidably connected to the swing arm; The second hinge member has a first end that is hinged and slidably connected to the first mounting base, and a second end that is hinged to the swing arm. The second hinge member and the first hinge member are arranged crosswise and are hinged to each other at the intersection.

3. The outward-opening suspended lower hinge according to claim 2, characterized in that, The second end of the first hinge is provided with a first connecting shaft, and the swing arm is provided with a first guide groove, the first connecting shaft being connected to the first guide groove; the first end of the second hinge is provided with a second connecting shaft, the first mounting base is provided with a second guide groove, and the second connecting shaft being connected to the second guide groove.

4. The outward-opening suspended lower hinge according to claim 1, characterized in that, A third hinge is provided between the second mounting base and the swing arm. One side of the third hinge is hinged to the second mounting base, and the other side of the third hinge is hinged to the swing arm.

5. The outward-opening, suspended lower hinge according to claim 1, characterized in that, The transmission rod is connected to a first locking unit, and the swing arm is provided with a second locking unit at the position corresponding to the movement trajectory of the first locking unit. When the transmission rod and the swing arm move relative to each other to a predetermined position, the first locking unit and the second locking unit engage.

6. The outward-opening suspended lower hinge according to claim 5, characterized in that, The first locking unit includes at least one recessed locking groove, and the second locking unit includes a raised locking point structure. When the swing arm and the transmission rod rotate relative to each other to a predetermined angle, the locking point structure is embedded in the locking groove to form a snap-fit.

7. The outward-opening suspended lower hinge according to claim 1, characterized in that, The locking assembly further includes a carrier member, the latching member is hinged to the carrier member, and an elastic member is provided between the latching member and the carrier member. The elastic member is used to provide elastic force to the latching member, and the carrier member is used to support the latching member to slide within the receiving groove.

8. The outward-opening suspended lower hinge according to claim 7, characterized in that, The buckle is provided with a first shaft hole, the bearing is provided with a second shaft hole, the swing arm is provided with a third shaft hole, the bottom of the receiving groove is provided with a third guide groove, and the third connecting shaft is sequentially connected to the first shaft hole, the second shaft hole, the third guide groove and the third shaft hole.

9. The outward-opening suspended lower hinge according to claim 1, characterized in that, The fastener has a first protrusion and the locking part is a second protrusion provided on the side wall of the receiving groove. When the first protrusion moves to the position of the second protrusion, the second protrusion interlocks with the first protrusion.

10. The outward-opening, suspended lower hinge according to claim 1, characterized in that, The fastener has a guide slope on one side, and the stop edge is used to abut against the guide slope to drive the fastener away from the snap-fit ​​part.

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