Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the lock tongue assembly which can reduce the risk of the lock hook member being damaged by impact.
A latch bolt assembly according to an embodiment of the present invention includes a base, a latch hook member, and an open-close lock drive mechanism. The latch hook component is movably arranged on the base; the locking and unlocking driving mechanism is arranged on the base and used for driving the lock hook to act; the base is provided with a protection part, and the latch hook piece is positioned at the rear side of the protection part.
The spring bolt assembly provided by the embodiment of the invention has at least the following beneficial effects: the unlocking and locking driving mechanism can drive the lock hook to move, so that the lock hook part is clamped with or separated from the lock groove, and unlocking or locking is realized; when the track of the sliding door moving forward is offset, the protection part of the base is positioned at the front side of the latch hook component, and the door frame firstly impacts the protection component without directly impacting the latch hook component, so that the risk of the latch hook component being damaged by impact can be reduced.
According to some embodiments of the invention, the base comprises a fixed seat and a guard, the guard is movably connected to the fixed seat and can move back and forth relative to the fixed seat, the latch hook is arranged on the guard, the guard is arranged at the front end of the guard, the latch opening and closing driving mechanism is configured to drive the guard to move back and forth, and the guard can move back under the impact of external force.
According to some embodiments of the invention, the front end of the latch hook member is provided with a latch hook portion, and when the guard member moves forward, the latch hook portion can be made to act upward so that the latch hook portion can be clamped with the external latch slot; when the protective piece moves backwards, the lock hook part can move downwards so that the lock hook part can be separated from the external lock groove.
According to some embodiments of the invention, a protection cavity for accommodating the latch hook part is provided at the front end of the protection piece, the protection part is a front wall of the protection cavity, an opening is provided at the upper end of the protection cavity, the latch hook part can be exposed from the opening when moving upwards, and the latch hook part can be retracted into the protection cavity when moving downwards.
According to some embodiments of the present invention, the latch hook member is pivotally connected to the guard member, and an elastic member is disposed between the latch hook member and the guard member, wherein the elastic member makes the latch hook portion have a tendency to move upward, and a guide surface is disposed at a front end of the latch hook portion, so that the latch hook portion can be guided to move downward when the guide surface is pressed against an external member.
According to some embodiments of the invention, a linkage mechanism is arranged between the fixed seat and the latch hook member, and the linkage mechanism links the latch hook member to move upwards and downwards when the protection member moves forwards and backwards.
According to some embodiments of the invention, the latch hook member is pivotally connected to the guard member, the linkage mechanism includes a cam portion disposed on the latch hook member and a pushing portion disposed on the fixing seat, the pushing portion can abut against the cam portion and rotate the latch hook member, when the guard member moves backward, the pushing portion pushes the latch hook member to rotate counterclockwise, and when the guard member moves forward, the pushing portion pushes the latch hook member to rotate clockwise, and the latch hook portion is located in front of a rotation axis of the latch hook member.
According to some embodiments of the invention, the latch hook member is provided with a stopper portion, and the stopper portion can abut against the pushing portion to limit the rotation of the latch hook member.
According to some embodiments of the invention, the fixing base is provided with a receiving hole along a front-rear direction, and the protecting piece is slidably arranged in the receiving hole.
According to some embodiments of the invention, the unlocking and locking driving mechanism comprises a rotating wheel and a connecting piece, wherein the rotating wheel is pivoted to the fixed seat, one end of the connecting piece is pivoted to a position of the rotating wheel deviating from the rotation axis of the rotating wheel, and the other end of the connecting piece is pivoted to the protection piece.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 6, a latch bolt assembly of the present invention includes a base 100, a latch hook member 200, and an open/close driving mechanism 300. The latch hook member 200 is movably disposed on the base 100; the unlocking and locking driving mechanism 300 is arranged on the base 100 and is used for driving the latch hook member 200 to act; wherein, the base 100 is provided with a guard 121, and the latch hook member 200 is located at a rear side of the guard 121. When the track where the sliding door moves forward is offset, the guard 121 of the base 100 is located at the front side of the latch hook member 200, and the door frame first impacts the guard 120 without directly impacting the latch hook member 200, so that the risk of the latch hook member 200 being damaged by impact can be reduced.
In an embodiment, the base 100 includes a fixed seat 110 and a guard 120, the guard 120 is movably connected to the fixed seat 110 and can move back and forth relative to the fixed seat 110, the latch hook 200 is disposed on the guard 120, the guard 121 is disposed at a front end of the guard 120, and the latch opening and closing driving mechanism 300 is configured to drive the guard 120 to move back and forth, and the guard 120 can move back and forth under an external force collision. The unlocking and locking driving mechanism 300 can drive the lock hook member 200 to move, so that the lock hook part 210 is clamped with or separated from the lock groove to realize unlocking or locking; the latch hook member 200 is disposed on the guard 120, so that the latch hook member 200 can move forward and backward synchronously with the guard 120, when the guard 120 is collided, the guard 120 can move backward and retract into the sliding door, so that the main impact can be borne by the sliding door, the impact on the guard 120 and the latch hook member 200 is reduced, and the guard 120 and the latch hook member 200 are not easily damaged; when locking is required, the lock opening and closing driving mechanism 300 is used to drive the guard 120 and the lock hook member 200 to move forward and extend into the lock groove.
In the embodiment, the front end of the latch hook member 200 is provided with a latch hook portion 210, and when the guard 120 moves forward, the latch hook portion 210 can be made to move upward so that the latch hook portion 210 can be clamped with an external latch slot; when the guard 120 moves backward, the latch hook 210 can be moved downward so that the latch hook 210 can be separated from the external latch slot. The structure can realize locking and unlocking.
In the embodiment, the front end of the guard 120 is provided with a guard cavity 122 for accommodating the latch hook portion 210, the guard portion 121 is a front wall of the guard cavity 122, the upper end of the guard cavity 122 is provided with an opening, the latch hook portion 210 can be exposed from the opening when moving upwards, and the latch hook portion 210 can be retracted into the guard cavity 122 when moving downwards. The guard 120 of the above structure has a simple structure and a relatively good protection effect on the latch hook member 200.
Specifically, the guard 120 is in a frame-shaped structure when viewed from above, and the latch hook 200 is located in the frame-shaped structure.
In the embodiment, the latch hook member 200 is pivotally connected to the protection member 120, an elastic member is disposed between the latch hook member 200 and the protection member 120, the elastic member makes the latch hook portion 210 have an upward movement tendency, the front end of the latch hook portion 210 is provided with a guiding surface 211, and the guiding surface 211 can guide the latch hook portion 210 to move downward when being extruded by an external component. In the above structure, when the latch hook member 200 moves forward to touch the notch of the latch slot, the notch edge of the latch slot presses the guide surface 211, so that the latch hook portion 210 moves downward to avoid the external part; after passing through the notch of the locking groove, the elastic piece drives the locking hook part 210 to reset and be clamped with the inside of the locking groove, so that an automatic locking function is realized. Specifically, the elastic element is a torsion spring. It is conceivable that the elastic element could also be a spring.
Specifically, the guide surface 211 is configured as an arc surface disposed at the front end of the latch hook member 200, and the arc surface protrudes in a direction away from the latch hook member 200, so that the guide effect is better when the latch hook portion 210 contacts with the slot opening of the latch slot.
In an embodiment, a linkage 400 is provided between the fixing base 110 and the latch hook member 200, and the linkage 400 links the latch hook member 200 to move up and down when the guard 120 moves forward and backward. The linkage mechanism 400 is provided, so that the lock hook member 200 can be driven to rotate by utilizing the back-and-forth movement of the guard member 120, no additional driving device is needed, and the production cost is saved.
In an embodiment, the latch hook member 200 is pivotally connected to the guard member 120, the linkage mechanism 400 includes a cam portion 410 disposed on the latch hook member 200 and a pushing portion 420 disposed on the fixing base 110, the pushing portion 420 can abut against the cam portion 410 and rotate the latch hook member 200, when the guard member 120 moves backward, the pushing portion 420 pushes the latch hook member 200 to rotate counterclockwise, and when the guard member 120 moves forward, the pushing portion 420 pushes the latch hook member 200 to rotate clockwise, and the latch hook portion 210 is located in front of the rotation axis of the latch hook member 200. The cam part 410 is abutted with the pushing part 420 and matched with the elastic part, when the latch hook member 200 rotates clockwise, the latch hook part 210 moves upwards and extends out of the protection member 120, and when the latch hook member 200 rotates anticlockwise, the latch hook part 210 moves downwards and is retracted into the protection cavity 122, so that the structure is simple and the processing is convenient.
It should be appreciated that the axis of rotation of the cam portion 410 is the pivot axis of the shackle member 200.
Specifically, the outer circumferential side of the cam portion 410 is an arc surface, so that the rotation speed of the latch hook member 200 can be changed, and the latch hook portion 210 can be conveniently rotated by a larger angle within a short distance forward and backward movement range.
Specifically, the pushing portion 420 is configured as a cylinder, and the pushing portion 420 and the fixing seat 110 are integrated, so that the structure is simple and the implementation is easy.
It is envisioned that the linkage 400 may also have other structures, for example, the linkage 400 includes a guide slot and a slider, the slider is slidably disposed in the guide slot, the guide slot is disposed in the latch hook member 200, the slider is disposed in the base 100, and the slider is configured to drive the latch hook member 200 to rotate when sliding along the guide slot.
In an embodiment, the latch hook member 200 is provided with a stop portion 220, and the stop portion 220 can abut against the pushing portion 420 to limit the rotation of the latch hook member 200. After the latch hook member 200 rotates to a proper angle, the pushing portion 420 is separated from the cam portion 410, and the latch portion 220 abuts against the pushing portion 420, so that the latch hook member 200 can not continue to rotate within other ranges of the front and back movement of the guard member 120, and the risk of excessive rotation of the latch hook member 200 is prevented. Specifically, the stopper 220 is disposed at the rear end of the latch hook member 200. It is envisioned that the stop 220 may be positioned elsewhere and structures provided on the guard 120 for abutting the stop 220.
In the embodiment, the fixing base 110 is provided with a receiving hole 111 along the front-rear direction, and the protection piece 120 is slidably disposed in the receiving hole 111. The latch bolt assembly of the above structure is convenient to protect the guard 120 and the latch hook 200 inside, and realizes the function of the guard 120 moving back and forth relative to the base 100, and has simple structure and easy implementation.
It is conceivable that the fixing base 110 may also be provided with a guide block along the front-rear direction, and the protecting member 120 is provided with a sliding groove extending along the front-rear direction, and the guide block is slidably disposed in the sliding groove, so that the protecting member 120 can move relative to the fixing base 110 along the front-rear direction.
In an embodiment, the unlocking and locking driving mechanism 300 includes a rotating wheel 310 and a connecting piece 320, wherein the rotating wheel 310 is pivoted to the fixed seat 110, one end of the connecting piece 320 is pivoted to a position of the rotating wheel 310 deviating from the rotation axis thereof, and the other end of the connecting piece 320 is pivoted to the protecting piece 120. When the rotating wheel 310 rotates, the protecting piece 120 is driven to move back and forth through the connecting piece 320, so that the size of the lock tongue assembly can be reduced, the door handle is convenient to use to rotate the rotating wheel 310, and the lock tongue assembly is switched between an unlocking state and a locking state.
Specifically, the rotating wheel 310 is provided with a connector accommodating groove 311, and in the unlocking state, the connector 320 is accommodated in the connector accommodating groove 311. The rotating wheel 310 is provided with the connector accommodating groove 311 for avoiding the space, so that the whole volume of the unlocking and locking driving mechanism 300 can be reduced.
It is envisioned that the latch opening and closing drive mechanism 300 may include a guard motor with guard 120 disposed on a rack, a gear disposed on an output shaft of the guard motor, the rack and pinion engaged to control the guard 120 to move back and forth; the motor and the displacement sensor can also be included, the output shaft of the motor rotates synchronously with the latch hook 200, when the guard 120 moves back and forth, the displacement sensor detects the displacement of the guard 120 and controls the motor to rotate, so that the latch hook 200 is retracted into or extended out of the guard 120;
It is conceivable that the latch hook member 200 may be slidably disposed on the base 100, where the latch opening and closing driving mechanism 300 may further include a latch hook member motor and a gear rotatably disposed on the output shaft, where the latch hook member 200 is provided with a rack, and the rack and the gear cooperate to drive the latch hook member 200 to move up and down, so as to drive the latch hook member 200 to open and close.
Specifically, the fixing base 110 includes a first casing 112, a second casing 113, and an end plate 114, where the first casing 112 and the second casing 113 are connected and enclosed to form a containing hole 111, the end plate 114 is located at front ends of the first casing 112 and the second casing 113, the containing hole 111 penetrates through the end plate 114, and the end plate 114 is connected with the first casing 112. The base 100 with the above structure facilitates the installation of the guard 120, the latch hook 200 and the driving mechanism into the accommodating hole 111, and the end plate 114 facilitates the installation of the latch assembly aligned with the lateral wall of the sliding door, thereby facilitating the installation of the latch assembly.
Specifically, the end plate 114 and the first housing 112 are formed as a single piece, which facilitates reducing the number of parts produced.
Specifically, one end of the second housing 113 is clamped with the end plate 114, and one end of the second housing 113 is connected with the first housing 112 through screws, so that the second housing 113 and the first housing 112 are fixedly connected, and the structure is simple and easy to implement. It is conceivable that both ends of the second housing 113 are fixedly connected to the first housing 112 by means of screw connection.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.