Flat unscrewing lock cylinder hole cover type hidden handle

Abstract

The invention relates to the technical field of handles, and discloses a flat unscrewing lock cylinder hole cover type hidden handle which comprises a shell, a cover body and a magnetic attraction assembly, the shell is used for being installed in an installation groove of a door plate, the shell is provided with a lock cylinder hole, and the lock cylinder hole is used for installing a lock cylinder; the cover body is hinged to the shell through a connecting rod assembly and has a first state of covering the outer surface of the shell in the first direction and a second state of being partially staggered with the shell in the vertical direction and exposing the lock cylinder hole; the cover bodies in the first state and the second state are parallel to the shell; the cover body in the second state and the shell are arranged in a spaced mode in the first direction, and the magnetic attraction assembly generates magnetic attraction force enabling the cover body and the shell in the first state to be attracted to each other; and an elastic piece for applying pre-twisting force for switching from the first state to the second state to the cover body is arranged at the hinged position of the connecting rod assembly and the shell. The lock is simple in structure and convenient to operate to expose the lock hole, and has the functions of digging the cover to automatically bounce and pressing the cover to reset and self-sucking and positioning.

Description

Technical Field

[0001] The invention relates to the technical field of handles, and in particular to a lock core hole cover type hidden handle that can be opened horizontally. Background Art

[0002] At present, there are many types and shapes of traditional old-style handles widely used in various industries such as entrance doors, interior doors, and cabinet doors on the market. Among them, the handle body and the handle body seat protrude from the installation surface. Such handles occupy a large space and are easy to bump into people. There are also a few handles that use a folding structure, which makes the door handle smaller in size due to the effect of folding, but the aesthetics of such handles is affected to a certain extent. With the popularization and application of fully automatic electronic smart locks, especially in the use scenarios equipped with such smart automatic locks or door openers, intelligent automatic unlocking or door opening is realized, and the situation of unlocking or opening the door by mechanical keys or handle bodies is greatly reduced, and it is only used occasionally or in emergency unlocking; the market demand for the overall flattening of the protruding handles to achieve a hidden or concealed effect is becoming increasingly strong.

[0003] Previously, there have been sporadic patent applications and applications for hidden handles, such as "a buffered hidden handle (patent application number CN201821907056.5)" and "a hidden handle and bathroom cabinet (application number CN202021961368.1)", but they are mainly used in cabinet doors, and the structure is too simple to meet the use requirements of various types of door businesses such as entrance doors and interior doors. Another example is the "hidden handle (patent application number CN202020796679.0)", the handle panel and the door leaf surface are made flush, but the handle panel is a dead and immobile one, and there is a large side gap between the main side of the handle panel and the door leaf to avoid the fingers from inserting into the sliding door, creating a large pothole effect on the appearance, and it cannot match the structural and functional requirements of inserting a key into a mechanical lock core for emergency unlocking, that is, the structure is rigid and simple, the appearance is poor, the functions are incomplete, and the application range is narrow. Summary of the invention

[0004] In view of this, the present invention provides a lock core hole cover type hidden handle that can be opened flatly. It has a simple structure, is easy to operate to expose the lock hole, and has the functions of self-springing when the cover is pulled out and self-priming and positioning when the cover is pressed.

[0005] The present invention provides a lock core hole cover type hidden handle that can be opened horizontally, comprising:

[0006] A housing, used to be installed in the installation groove of the door panel, the housing is provided with a lock core hole, and the lock core hole is used to install the lock core;

[0007] The cover body is hinged to the shell through a connecting rod assembly, and the cover body has a first state in which it covers the outer surface of the shell along a first direction, and a second state in which it is partially offset from the shell along a vertical direction and exposes the lock core hole; the cover body in the first state and the second state is arranged parallel to the shell; the cover body in the second state is spaced apart from the shell along the first direction.

[0008] The flat-swing lock core hole cover type hidden handle according to the present invention has at least the following beneficial effects:

[0009] The cover body is hinged to the shell body by a connecting rod assembly, and a lock core hole for installing a lock core is provided on the shell body. When it is necessary to insert a key into the lock core's lock hole to complete mechanical unlocking under power failure or circuit failure, it is only necessary to pull the cover body to move so that the cover body can make a translational movement away from the shell body in a first direction and a translational movement away from the shell body in a vertical direction, so that the cover body can switch from the first state to the second state with a short movement stroke; when it is necessary to cover the lock core's lock hole, it is only necessary to push the cover body to move so that the cover body can make a translational movement towards the shell body in the first direction and a translational movement away from the shell body in the vertical direction, so that the cover body can switch from the first state to the second state with a short movement stroke. While performing the shifting movement, the cover body also performs a translational movement in the vertical direction close to the shell body, so that the cover body only needs to perform a short movement stroke to complete the switch from the second state to the first state; it is realized that the switch between the first state and the second state can be achieved by only driving the cover body to perform a short translational movement stroke, which is easier to operate and use, and has a more reliable structure; at the same time, the cover body in the first state abuts against and covers the outer surface of the shell, so that the overall thickness of the surface part of the lock core hole cover type hidden handle protruding from the door panel is smaller, it is not easy to bump into people, and it does not have the abruptness of traditional handles, and is more aesthetically pleasing.

[0010] In an optional embodiment, the connecting rod assembly includes a first connecting rod and a second connecting rod, the first connecting rod is located above the second connecting rod in the vertical direction, one end of the first connecting rod is hinged to the end of the shell away from the cover body, and the other end is hinged to the cover body; one end of the second connecting rod is hinged to the end of the shell away from the cover body, and the other end is hinged to the cover body; a movable groove is formed through the shell along the first direction, and the movable groove is arranged parallel to the vertical direction, and the first connecting rod and the second connecting rod can be movably arranged in the movable groove.

[0011] In an optional embodiment, a magnetic attraction component is further included, and the magnetic attraction component is arranged on the shell and the cover body. When the cover body is in the first state, the magnetic attraction component generates a magnetic attraction force that causes the cover body and the shell to be attracted to each other.

[0012] In an optional embodiment, the magnetic attraction component includes a magnet and a magnetic attraction metal part, the magnet is arranged on one of the cover body and the shell, and the magnetic attraction metal part is arranged on the other one; when the cover body is in the first state, the magnet and the magnetic attraction metal part are attracted to each other.

[0013] In an optional embodiment, two of the first connecting rod and two of the second connecting rod are provided, and the two first connecting rods are arranged opposite to each other along the second direction.

[0014] In an optional embodiment, one end of the shell away from the cover body is connected to a connecting shaft for rotation around the second direction, and one end of the two first connecting rods away from the cover body is respectively connected to both sides of the connecting shaft along the second direction and rotates with the connecting shaft.

[0015] In an optional embodiment, an elastic member is provided at a hinge between the connecting rod assembly and the housing, and the elastic member is used to apply a pre-torque force to the cover body to switch from the first state to the second state.

[0016] In an optional embodiment, the elastic member is configured as a torsion spring, the torsion spring is sleeved on the connecting shaft, a torque arm at one end of the torsion spring is connected to the housing, and a torsion hook end of the torsion spring is connected to the connecting shaft.

[0017] In an optional embodiment, two U-shaped grooves are provided at one end of the shell body away from the cover body along the first direction, and the two U-shaped grooves are spaced apart along the second direction, and the connecting shaft is rotatably connected to the two U-shaped grooves on both sides along the second direction; the open end of the U-shaped groove is removably covered with an axis pressure plate.

[0018] In an optional embodiment, a mounting threaded hole is provided on both sides of the U-shaped groove in the vertical direction on the shell, and a mounting through hole is provided on the shaft pressure plate corresponding to the mounting threaded hole. The mounting through hole is used for the mounting screw to pass through, and the mounting screw matches the mounting threaded hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the decomposed structure of an embodiment of the present invention;

[0021] Figure 2It is a structural schematic diagram of the cover body in the first state according to an embodiment of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the cover body in the second state according to an embodiment of the present invention;

[0023] Figure 4 for Figure 3 A structural diagram from another perspective;

[0024] Figure 5 It is a schematic diagram of the assembly structure of the connecting shaft, the torsion spring and the two upper connecting rods in an embodiment of the present invention;

[0025] Figure 6 for Figure 5 Schematic diagram of the assembly structure of the middle connecting shaft and the hook piece;

[0026] Figure 7 is a schematic structural diagram of a cover body in an embodiment of the present invention;

[0027] Figure 8 is a schematic structural diagram of a housing in an embodiment of the present invention;

[0028] Fig. 9 for Figure 8 A schematic diagram of the structure from another perspective.

[0029] Description of reference numerals:

[0030] 100-housing, 110-lock core hole, 120-movable slot, 121-third threaded hole, 122-third screw, 130-U-shaped slot, 140-axis pressing piece, 141-mounting through hole, 142-mounting screw, 150-mounting countersunk hole, 160-mounting threaded hole, 170-mounting hole;

[0031] 300-cover body, 310-connection support, 311-connection groove, 312-first threaded hole, 313-first screw, 314-second threaded hole, 315-second screw, 320-enclosing wall;

[0032] 410-first connecting rod, 411-first through hole, 412-third through hole, 420-second connecting rod, 421-second through hole, 422-fourth through hole, 430-connecting shaft, 431-polygonal cylinder, 432-first cylinder, 433-second cylinder, 440-torsion spring, 450-hook sheet, 451-buckle notch;

[0033] 510-magnet, 520-magnetic metal parts. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0035] In the description of this embodiment, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this embodiment and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting this embodiment. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0036] In the description of this embodiment, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0037] Combine the following Figures 1 to 9 , describing an embodiment of the present invention.

[0038] According to an embodiment of the present invention, a horizontally-swinging lock core hole cover type hidden handle is provided, comprising a housing 100 and a cover 300, wherein the housing 100 is used to be installed in a mounting groove of a door panel, the housing 100 is provided with a lock core hole 110, and the lock core hole 110 is used to install a lock core; the cover 300 is hinged to the housing 100 through a connecting rod assembly, and the cover 300 has a first state (such as covering the outer surface of the housing 100 along a first direction) Figure 2 ), and a second state in which the housing 100 is partially offset in the vertical direction and the lock core hole 110 is exposed (as shown in FIG. Figure 3 and Figure 4 The cover body 300 in the first state and the second state is arranged parallel to the shell 100; the cover body 300 in the second state is arranged spaced apart from the shell 100 along the first direction.

[0039] The lock core hole cover type hidden handle of the present embodiment hinges the cover body 300 to the shell 100 through a connecting rod assembly, and a lock core hole 110 for installing the lock core is provided on the shell 100. When it is necessary to insert a key into the lock core's lock hole to complete mechanical unlocking under power failure or circuit failure, it is only necessary to pull the cover body 300 to move so that the cover body 300 can make a translational movement away from the shell 100 in a first direction and a translational movement away from the shell 100 in a vertical direction at the same time, so that the cover body 300 only needs a short movement stroke to complete the switching from the first state to the second state, so that the lock core's lock hole is exposed, which satisfies the requirement of inserting a key into the mechanical lock core. Structural and functional requirements for emergency unlocking; when the lock hole of the lock core needs to be covered, the cover body 300 only needs to be pushed to move, so that the cover body 300 can make a translational movement along the first direction close to the shell 100 while making a translational movement along the vertical direction close to the shell 100, so that the cover body 300 only needs to make a short movement stroke to complete the switch from the second state to the first state, and cover the lock hole of the lock core, meeting the functional requirements of matching the lock hole of the mechanical lock core to prevent dust from entering; it is possible to switch between the first state and the second state by only driving the cover body 300 to make a short translational movement stroke, which is easier to operate and more reliable in structure.

[0040] It should be noted that after the shell 100 of this embodiment is installed in the mounting groove of the door panel, the outer surface of the shell 100 protrudes from the surface of the door panel within two millimeters, and the thickness of the cover body 300 is relatively thin. The cover body 300 in the first state abuts and covers the outer surface of the shell 100, so that the thickness of the surface part protruding from the door panel formed by the cover body 300 and the shell 100 in the first state is relatively small, which is not easy to bump into people, and there is no abrupt feeling of traditional handles, and it is more aesthetically pleasing; at the same time, the cover body 300 in the first state is relatively close to the outer edge of the end face of the shell 100 to provide a surrounding wall 320, and the surrounding wall 320 of the cover body 300 in the first state covers the part of the outer surface of the shell 100 protruding from the surface of the door panel, ensuring that the cover body 300 in the first state is butt-jointed and fused with the surface micro-gap of the door panel.

[0041] It should be noted that when the cover body 300 is switched to the second state so that the lock core hole 110 is exposed (that is, the lock hole of the lock core is exposed), because the cover body 300 and the shell 100 are spaced apart along the first direction, there is a gap space between the cover body 300 and the surface of the door panel along the first direction. Therefore, the user only needs to pull the cover body 300 outward to open the door and it has the function of a door handle or door pull.

[0042] It should be noted that, compared with the method of rotating the cover body 300 and the lock core hole 110 in the vertical direction to expose the lock core hole 110, the present embodiment uses a translational movement to offset the cover body 300 and the lock core hole 110 in the vertical direction, which has a shorter movement stroke, is easier to operate and use, and has a more reliable structure.

[0043] It can be understood that the vertical direction mentioned herein refers to the height direction of the housing 100, the first direction refers to the thickness direction of the housing 100, and the second direction is the width direction of the housing 100. The first direction and the second direction are located in the same horizontal plane. For the convenience of description, this embodiment is described as follows: Figure 1 The first direction, the second direction and the vertical direction shown in the figure are described as the first direction, the second direction and the vertical direction, respectively, but should not be understood as a clear limitation on the first direction, the second direction and the vertical direction.

[0044] It can be understood that the lock core is provided with a traditional lock hole, and the lock core is installed in the lock core hole 110; therefore, when the cover body 300 is switched to the first state, the lock core hole 110 is covered to cover the lock hole of the lock core; when the cover body 300 is switched to the second state, the lock core hole 110 is exposed to reveal the lock hole of the lock core.

[0045] It should be noted that the outer surface of the shell 100 along the first direction mentioned herein refers to the side facing the user when in use, that is, the side of the shell 100 facing the cover body 300 .

[0046] In specific applications, the door panel can be either a door leaf or a cabinet door, that is, the lock core hole cover type hidden handle of this embodiment can be applied to various industries such as entrance doors, interior doors, cabinet doors, etc.

[0047] It should be noted that the lock core hole 110 can be set at the upper end of the side wall of the shell 100 or at the lower end of the side wall of the shell 100. In the present embodiment, the lock core hole 110 is set at the lower end of the side wall of the shell 100. Therefore, when the cover body 300 is switched from the first state to the second state, the cover body 300 is pulled so that the cover body 300 makes a translational movement along the first direction away from the shell 100 and at the same time makes a translational movement along the vertical direction upward away from the shell 100; when the cover body 300 is switched from the second state to the first state, the cover body 300 is pushed so that the cover body 300 makes a translational movement along the first direction toward the shell 100 and at the same time makes a translational movement along the vertical direction downward toward the shell 100.

[0048] The structure of the connecting rod assembly of this embodiment is described below.

[0049] like Figure 1 , Figure 3 , Figure 4 , Figure 8 and Fig. 9As shown, in some embodiments, the connecting rod assembly includes a first connecting rod 410 and a second connecting rod 420, the first connecting rod 410 is located above the second connecting rod 420 in the vertical direction, one end of the first connecting rod 410 is hinged to the end of the shell 100 away from the cover body 300, and the other end is hinged to the cover body 300; one end of the second connecting rod 420 is hinged to the end of the shell 100 away from the cover body 300, and the other end is hinged to the cover body 300; the shell 100 is formed with a movable groove 120 through it along the first direction, and the movable groove 120 is arranged parallel to the vertical direction, and the first connecting rod 410 and the second connecting rod 420 can be movably arranged in the movable groove 120. By combining the shell 100, the first connecting rod 410, the cover body 300 and the second connecting rod 420 to form a parallelogram connecting rod mechanism, and the movable groove 120 provides a movement avoidance space for the first connecting rod 410 and the second connecting rod 420, when an external force is applied to the cover body 300, the cover body 300 can be driven to make a translational movement along the first direction away from the shell 100 and at the same time make a translational movement along the vertical direction upward away from the shell 100, or the cover body 300 can be driven to make a translational movement along the first direction close to the shell 100 and at the same time make a translational movement along the vertical direction downward close to the shell 100; the cover body 300 is switched between the first state and the second state by translationally unscrewing, thereby shortening the movement stroke required for the cover body 300 to switch between the first state and the second state, and making the switch of the cover body 300 between the first state and the second state smoother and more labor-saving.

[0050] like Figure 3 and Figure 7 As shown, specifically, the cover body 300 is provided with a connection support 310 on the end surface facing the housing 100 along the first direction, and a connection groove 311 is formed through the end of the connection support 310 away from the cover body 300 in the vertical direction; the first connecting rod 410 is hinged to the upper end of the connection groove 311 in the vertical direction, and the second connecting rod 420 is hinged to the lower end of the connection groove 311 in the vertical direction. By hingedly connecting both the first connecting rod 410 and the second connecting rod 420 to the connection groove 311, the connection groove 311 can guide the movement trajectory of the first connecting rod 410 and the second connecting rod 420 at the same time, which is conducive to improving the smoothness and stability of the switch of the cover body 300 between the first state and the second state.

[0051] like Figure 1 , Figure 3 , Figure 5 and Figure 7As shown, specifically, a first through hole 411 is formed through one end of the first connecting rod 410 toward the cover body 300 along the second direction, and a first threaded hole 312 is formed through the connecting support 310 at a position corresponding to the first through hole 411 along the second direction, and a first screw 313 is threadedly connected to the first threaded hole 312. When the first connecting rod 410 is hingedly assembled on the cover body 300, the first screw 313 is passed through the first through hole 411 and threadedly connected to the first threaded hole 312 to complete the assembly, and the operation is easy.

[0052] like Figure 1 , Figure 3 , Figure 5 and Figure 7 As shown, specifically, a second through hole 421 is formed through the second direction at one end of the second connecting rod 420 facing the cover body 300, and a second threaded hole 314 is formed through the second direction at a position corresponding to the second through hole 421 of the connecting support 310, and a second screw 315 is threadedly connected to the second threaded hole 314. When the second connecting rod 420 is hingedly assembled on the cover body 300, the second screw 315 is passed through the second through hole 421 and threadedly connected to the second threaded hole 314 to complete the assembly, which is easy to operate.

[0053] like Figure 1 and Figure 5 As shown, specifically, a third through hole 412 is formed through one end of the first connecting rod 410 facing the housing 100 along the second direction, and the third through hole 412 is interference-fitted with the connecting shaft 430 .

[0054] like Figures 1 to 3 as well as Figure 8 As shown, specifically, a fourth through hole 422 is formed through the second direction at one end of the second connecting rod 420 facing the shell 100, and a third threaded hole 121 is formed through the wall of the movable groove 120 corresponding to the position of the fourth through hole 422 along the second direction, and a third screw 122 is threadedly connected to the third threaded hole 121. When the second connecting rod 420 is hingedly assembled to the shell 100, the third screw 122 is passed through the fourth through hole 422 and threadedly connected to the third threaded hole 121 to complete the assembly, which is easy to operate.

[0055] like Figure 2 As shown, specifically, the shell 100 is penetrated with a mounting countersunk hole 150 along the first direction, and the mounting countersunk hole 150 is used for a countersunk screw to pass through and be threadedly connected to a preset threaded hole of the door panel, thereby fixing the shell 100 to the mounting groove of the door panel.

[0056] like Figure 3 and Figure 4As shown, specifically, two of the first connecting rod 410 and the second connecting rod 420 are provided, and the two first connecting rods 410 are arranged opposite to each other along the second direction. In this way, a parallelogram connecting rod mechanism is formed on both sides along the second direction between the housing 100 and the cover body 300, which is conducive to improving the smoothness and stability of the cover body 300 switching between the first state and the second state, thereby improving the reliability of the lock core hole cover type hidden handle of this embodiment.

[0057] like Figures 1 to 3 As shown, specifically, one end of the housing 100 away from the cover 300 is connected to the connecting shaft 430 for rotation around the second direction, and one end of the two first connecting rods 410 away from the cover 300 is respectively connected to the two sides of the connecting shaft 430 along the second direction, and rotates with the connecting shaft 430. Connecting the two first connecting rods 410 through the connecting shaft 430 is conducive to improving the synchronization of the two first connecting rods 410 rotating relative to the housing 100 when an external force is applied to the cover 300; and compared with respectively hingedly connecting the two first connecting rods 410 to the housing 100 through two hinge shafts, the structure of this embodiment is simpler and easier to assemble.

[0058] like Figures 1 to 3 as well as Figure 8 As shown, specifically, two U-shaped grooves 130 are provided at one end of the housing 100 away from the cover body 300 along the first direction, and the two U-shaped grooves 130 are spaced apart along the second direction, and the connecting shaft 430 is rotatably connected to the two U-shaped grooves 130 on both sides along the second direction; the open end of the U-shaped groove 130 is detachably covered with an axis pressing sheet 140. By detachably covering the open end of the U-shaped groove 130 with the axis pressing sheet 140, on the one hand, the axis pressing sheet 140 can limit the freedom of the connecting shaft 430 to escape from the U-shaped groove 130 along the radial movement of the connecting shaft 430, thereby improving the reliability of the connecting shaft 430 rotating in the U-shaped groove 130 along the second direction; on the other hand, during the assembly process, the open end of the U-shaped groove 130 can be opened first so that the connecting shaft 430 is placed in the U-shaped groove 130, and then the axis pressing sheet 140 is connected and covered on the open end of the U-shaped groove 130, and the entire assembly process is easy to operate.

[0059] Here, the detachable connection between the shaft pressing piece 140 and the housing 100 is described in detail. In some embodiments, Figure 1 , Figure 2 and Figure 8As shown, a mounting threaded hole 160 is respectively provided on both sides of the U-shaped groove 130 along the vertical direction on the shell 100, and a mounting through hole 141 is provided on the shaft pressing plate 140 corresponding to the mounting threaded hole 160, and the mounting through hole 141 is used for the mounting screw 142 to pass through, and the mounting screw 142 matches the mounting threaded hole 160; when the shaft pressing plate 140 and the shell 100 need to be assembled into one body to cover the open end of the U-shaped groove 130, only two mounting screws 142 need to be selected to pass through the corresponding mounting through holes 141 and tightened to the corresponding mounting threaded holes 160, which is easy to operate. In another replaceable embodiment, a mounting through hole 141 is respectively provided on both sides of the U-shaped groove 130 along the vertical direction on the shell 100, and the mounting through hole 141 is used for allowing the mounting screw 142 to pass through. The shaft pressing plate 140 is provided with a mounting threaded hole 160 at a position corresponding to the mounting through hole 141, and the mounting screw 142 matches the mounting threaded hole 160.

[0060] In some embodiments, the lock core hole cover type hidden handle further includes a magnetic suction component, which is disposed on the housing 100 and the cover 300. When the cover 300 is in the first state, the magnetic suction component generates a magnetic suction force that causes the cover 300 and the housing 100 to be mutually attracted. The magnetic suction force generated by the magnetic suction component makes the cover 300 and the housing 100 in the first state more compactly attracted, and in the natural state where no external force is applied to drive the cover 300 to switch from the first state to the second state, the cover 300 always keeps covering and closely attached to the outer surface of the housing 100.

[0061] Specifically, the magnetic attraction component includes a magnet 510 and a magnetic attraction metal member 520, wherein the magnet 510 is disposed on one of the cover 300 and the housing 100, and the magnetic attraction metal member 520 is disposed on the other one; Figures 1 to 4 As shown, preferably, the magnet 510 is arranged on the outer surface of the shell 100, and the magnetic metal part 520 is arranged on the end surface of the cover plate facing the shell 100. When the cover body 300 is in the first state, the magnet 510 and the magnetic metal part 520 abut against each other and generate a magnetic force, so that the cover body 300 always keeps covering and clinging to the outer surface of the shell 100 in the natural state of the cover body 300 when no external force is applied to drive the cover body 300 to switch from the first state to the second state; at the same time, in the process of switching the cover body 300 from the second state to the first state, as the magnet 510 and the magnetic metal part 520 approach each other to generate a magnetic force, and under the self-attraction positioning effect between the magnet 510 and the magnetic metal part 520, it is beneficial for the cover body 300 to accurately switch to the first state and completely cover the outer surface of the shell 100, thereby realizing the function of pressing the cover to reset the self-attraction positioning.

[0062] In order to improve the close covering effect between the cover body 300 and the shell 100 in the first state, specifically, two magnets 510 and two magnetic metal parts 520 are provided, and the two magnetic metal parts 520 are arranged opposite to each other in the vertical direction on the end surface of the cover body 300 facing the shell 100.

[0063] like Figure 8 and Fig. 9 As shown, specifically, a mounting hole 170 is recessed at the outer surface of the housing 100 corresponding to the position of the magnet 510 , and the magnet 510 is embedded in the mounting hole 170 .

[0064] Specifically, the magnetic metal member 520 is connected to the cover 300 by screws for assembly.

[0065] In a specific application, the magnetic metal member 520 is a ferromagnetic material such as iron, cobalt and nickel.

[0066] In some embodiments, an elastic member is provided at the hinge of the connecting rod assembly and the shell 100, and the elastic member is used to apply a pre-torque to the cover body 300 to switch from the first state to the second state. By adding an elastic member, and the pre-torque generated by the elastic member can partially offset the magnetic attraction generated by the magnetic attraction assembly, in the process of switching the cover body 300 from the first state to the second state, only a small external force needs to be applied to gradually separate the cover body 300 from the shell 100 and accurately switch to the second state, thereby realizing the function of self-elasticity of the cover, and the operation is more convenient. And because the elastic member always applies a biasing force to the cover body 300 in the second state, the cover body 300 in the second state cannot automatically switch to the first state in a natural state without applying an external force, causing damage to the operator's hands.

[0067] It is understandable that when the cover body 300 is in the first state, the pre-torque force generated by the elastic member cannot enable the cover body 300 to overcome the magnetic attraction force generated by the magnetic attraction component and automatically switch to the second state.

[0068] like Figures 1 to 5 As shown, specifically, the elastic member is configured as a torsion spring 440, the torsion spring 440 is sleeved on the connecting shaft 430, one end of the torsion spring 440 has a torsion arm connected to the housing 100, and the torsion hook end of the torsion spring 440 is connected to the connecting shaft 430. The torsion arm of the torsion spring 440 is connected to the housing 100, and the torsion hook end of the torsion spring 440 is connected to the connecting shaft 430, so that the torsion spring 440 is stretched or compressed as the connecting shaft 430 rotates, so that when the cover body 300 is switched to the first state, the energy stored in the torsion spring 440 reaches the maximum, so that the magnetic metal member 520 can be separated from the magnet 510 by applying a small external force, thereby releasing the energy stored in the torsion spring 440 so that the cover body 300 automatically and accurately switches to the second state.

[0069] In order to improve the convenience of assembling the torsion spring 440, as Figure 1 , Figure 5 and Figure 6 As shown, specifically, the connecting shaft 430 includes a polygonal cylinder 431 and two first cylinders 432 coaxially arranged at both ends of the polygonal cylinder 431 along the second direction, the first cylinder 432 is rotatably connected to the U-shaped groove 130, and the cross-sectional area of ​​the polygonal cylinder 431 perpendicular to the second direction is larger than the cross-sectional area of ​​the first cylinder 432 perpendicular to the second direction; the polygonal cylinder 431 is interference fit with a hook piece 450, and the outer peripheral surface of the hook piece 450 is recessed with a snap notch 451, and the torsion hook end of the torsion spring 440 is snapped into the snap notch 451.

[0070] Specifically, each first cylinder 432 is provided with a second cylinder 433 at one end away from the polygonal cylinder 431, and the diameter of the second cylinder 433 is smaller than the diameter of the first cylinder 432 so that the connecting shaft 430 can be obtained by turning; the third through holes 412 of the two first connecting rods 410 are respectively interference fit with the two second cylinders 433.

[0071] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended invention.

Claims

1. A flat-swing lock core hole cover type hidden handle, characterized in that: include: A housing (100) is used to be installed in a mounting groove of a door panel, the housing (100) is provided with a lock core hole (110), and the lock core hole (110) is used to install a lock core; The cover body (300) is hinged to the shell (100) through a connecting rod assembly, and the cover body (300) has a first state in which it covers the outer surface of the shell (100) along a first direction, and a second state in which it is partially offset from the shell (100) along a vertical direction and exposes the lock core hole (110); the cover body (300) in the first state and the second state is arranged parallel to the shell (100); the cover body (300) in the second state is spaced apart from the shell (100) along the first direction.

2. A horizontally twisted lock core hole cover type hidden handle according to claim 1, characterized in that: The connecting rod assembly comprises a first connecting rod (410) and a second connecting rod (420), wherein the first connecting rod (410) is located above the second connecting rod (420) in the vertical direction, one end of the first connecting rod (410) is hinged to one end of the shell (100) away from the cover body (300), and the other end is hinged to the cover body (300); one end of the second connecting rod (420) is hinged to one end of the shell (100) away from the cover body (300), and the other end is hinged to the cover body (300); a movable groove (120) is formed through the shell (100) along a first direction, and the movable groove (120) is arranged parallel to the vertical direction, and the first connecting rod (410) and the second connecting rod (420) can both be movably arranged in the movable groove (120).

3. A horizontally twisted lock core hole cover type hidden handle according to claim 2, characterized in that: It also includes a magnetic attraction component, which is arranged on the shell (100) and the cover body (300), and when the cover body (300) is in a first state, the magnetic attraction component generates a magnetic attraction force that causes the cover body (300) and the shell (100) to be attracted to each other.

4. A horizontally twisted lock core hole cover type hidden handle according to claim 3, characterized in that: The magnetic attraction component includes a magnet (510) and a magnetic attraction metal part (520), wherein the magnet (510) is arranged on one of the cover body (300) and the shell body (100), and the magnetic attraction metal part (520) is arranged on the other one; when the cover body (300) is in a first state, the magnet (510) and the magnetic attraction metal part (520) are attracted to each other.

5. A horizontally twisted lock core hole cover type hidden handle according to claim 3 or 4, characterized in that: Two of each of the first connecting rod (410) and the second connecting rod (420) are provided, and the two first connecting rods (410) are arranged opposite to each other along the second direction.

6. A horizontally twistable lock core hole cover type hidden handle according to claim 5, characterized in that: One end of the shell (100) away from the cover body (300) is connected to a connecting shaft (430) for rotation around a second direction, and one end of the two first connecting rods (410) away from the cover body (300) is respectively connected to two sides of the connecting shaft (430) along the second direction and rotates together with the connecting shaft (430).

7. A horizontally twistable lock core hole cover type hidden handle according to claim 6, characterized in that: An elastic member is provided at the hinge between the connecting rod assembly and the housing (100), and the elastic member is used to apply a pre-torque force to the cover body (300) to switch from the first state to the second state.

8. The horizontally twistable lock core hole cover type hidden handle according to claim 7, characterized in that: The elastic member is configured as a torsion spring (440), the torsion spring (440) is sleeved on the connecting shaft (430), a torque arm at one end of the torsion spring (440) is connected to the housing (100), and a torsion hook end of the torsion spring (440) is connected to the connecting shaft (430).

9. A horizontally twistable lock core hole cover type hidden handle according to any one of claims 6 to 8, characterized in that: Two U-shaped grooves (130) are arranged at one end of the shell (100) away from the cover body (300) along the first direction, and the two U-shaped grooves (130) are arranged at intervals along the second direction. The connecting shaft (430) is rotatably connected to the two U-shaped grooves (130) on both sides along the second direction; the open end of the U-shaped groove (130) is detachably covered with an axis pressing sheet (140).

10. A horizontally twistable lock core hole cover type hidden handle according to claim 9, characterized in that: The shell (100) is provided with a mounting threaded hole (160) on both sides of the U-shaped groove (130) in the vertical direction, and the shaft pressure plate (140) is provided with a mounting through hole (141) at a position corresponding to the mounting threaded hole (160). The mounting through hole (141) is used for allowing a mounting screw (142) to pass through, and the mounting screw (142) matches the mounting threaded hole (160).

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