Latching structure and door lock device

Abstract

The utility model discloses a lock catch structure and door lock device, lock catch structure includes apron, bottom plate, lock tongue and spring. Apron is located at the left side of bottom plate, and apron is equipped with through -hole and mounting hole, and mounting hole is used for fixing apron on mounting surface. The mounting surface can be the sectional material door and window of narrow frame, the cabinet door frame or the specific decorative door frame. Bottom plate and apron are detachably connected through bolt, and apron and bottom plate cooperate and form mounting cavity. One end of lock tongue has annular baffle, and lock tongue is arranged in the through -hole, and the annular baffle is located in the mounting cavity, and the annular baffle is located at the right side of apron, and the outer diameter of annular baffle is greater than the aperture of through -hole, so that the annular baffle cannot pass through apron to the left through the through -hole, and the annular baffle can slightly shake in the mounting cavity. Spring is located in the mounting cavity, and one end of spring is connected with bottom plate, and the other end of spring is connected with lock tongue.

Description

Technical Field

[0001] This utility model relates to the field of door lock technology, and in particular to a latch structure and door lock device. Background Technology

[0002] Existing bolt-type latch assemblies typically house an internal structure within a single molded or box-shaped casing made of multiple bent sheets. The bolt and the keyhole on the lock body must be precisely aligned; even a slight misalignment during installation can lead to difficulty closing the door, the bolt failing to insert or remove smoothly, or even the door failing to lock. Furthermore, due to the box-shaped casing, their overall width and thickness are usually considerable, making installation on narrow surfaces such as narrow-framed doors and windows, cabinet doors, or certain decorative door frames. Forcing installation might require additional grooving of the door frame, compromising its integrity. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. To this end, this utility model proposes a latch structure and a door lock device.

[0004] In a first aspect, this utility model embodiment provides a locking structure, the locking structure comprising: The cover plate has a through hole and a mounting hole, wherein the mounting hole is used to fix the cover plate to the mounting surface; The base plate is detachably connected to the cover plate, and the cover plate and the base plate cooperate to form an installation cavity; A locking tongue, one end of which has an annular baffle, the locking tongue passes through the through hole, and the annular baffle is located inside the mounting cavity, the outer diameter of the annular baffle being larger than the diameter of the through hole; A spring is located inside the mounting cavity, with one end of the spring connected to the base plate and the other end of the spring connected to the locking tongue.

[0005] According to some embodiments of this utility model, the inner diameter of the mounting cavity is larger than the outer diameter of the annular baffle.

[0006] According to some embodiments of the present invention, the depth of the mounting cavity is greater than the thickness of the annular baffle.

[0007] According to some embodiments of the present invention, the left side of the base plate is provided with a first groove, the left side of the base plate is attached to the right side of the cover plate, the through hole communicates with the first groove, the first groove constitutes the mounting cavity, and the rear side of the base plate is provided with a notch communicating with the first groove.

[0008] According to some embodiments of the present invention, the outer peripheral wall of the latch is provided with an annular locking groove, which can be inserted by the driving component of the lock body to restrict the movement of the latch.

[0009] According to some embodiments of this utility model, the right end of the locking tongue is provided with a positioning groove, and the left end of the spring is inserted into the positioning groove.

[0010] According to some embodiments of the present invention, the right side of the cover plate is provided with a second groove, the left side of the bottom plate is attached to the right side of the cover plate, the through hole communicates with the second groove, and the second groove constitutes the mounting cavity.

[0011] According to some embodiments of the present invention, the cover plate includes a first plate and a second plate, the first plate and the second plate are fixedly connected, the first plate is provided with the through hole, and the second plate is provided with the mounting hole.

[0012] According to some embodiments of the present invention, the first plate and the second plate are perpendicular to each other, and the front end of the first plate is fixedly connected to the right end of the second plate.

[0013] The locking structure according to the embodiments of this utility model has at least the following technical effects: 1. This locking structure is small in size and occupies little space; and the cover plate is plate-shaped, making it easy to install on narrower mounting surfaces. The thickness of the cover plate can be controlled within a few millimeters, which is much smaller than the thickness of traditional box-shaped structures that are tens of millimeters thick. This allows it to perfectly fit modern narrow-frame doors and windows with a profile width of only one to two centimeters, without the need for destructive grooving of the door frame, thus maintaining the structural integrity and aesthetics of the door frame.

[0014] 2. The latch can wobble slightly relative to the cover plate, thereby improving the installation tolerance rate. Precise alignment with the keyhole is not required. The spring provides a corrective force to the latch, continuously applying a leftward tendency force. The floating latch allows for millimeter-level horizontal, vertical, or angular deviations during installation. The latch can compensate for these deviations using its wobble space, reducing installation requirements and improving installation efficiency and success rate.

[0015] Secondly, this utility model embodiment also provides a door lock device, including a latch structure according to the first aspect embodiment of this utility model described above.

[0016] The door lock device according to the embodiments of the present utility model has at least the following technical effects: the door lock device adopts the latch structure, which is small in size and occupies little space; and the cover plate is plate-shaped, which is convenient for installation on a narrower mounting surface. The latch can slightly wiggle relative to the cover plate, thereby improving the installation error tolerance rate and eliminating the need for precise alignment of the key hole.

[0017] Additional aspects and advantages of this 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. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the locking structure of some embodiments of the present invention; Figure 2 These are exploded views of the locking structure of some embodiments of this utility model; Figure 3 This is a cross-sectional view of the locking structure of some embodiments of this utility model; Figure 4 This is a schematic diagram of another locking structure according to some embodiments of the present invention; Figure 5 This is an exploded view of another locking structure according to some embodiments of this utility model; Figure 6 This is a cross-sectional view of another locking structure according to some embodiments of the present invention; Figure 7 This is a schematic diagram of the working mechanism of the locking structure in some embodiments of this utility model; Figure 8 This is a schematic diagram of another locking structure according to some embodiments of the present invention.

[0019] Icon labels: Cover plate 100; through hole 101; mounting hole 102; second groove 110; first plate 121; second plate 122; Base plate 200; mounting cavity 210; first groove 220; notch 221; Lock tongue 300; annular baffle 310; annular lock groove 320; positioning groove 330; Spring 400; Lock body 410; Lock hole 411; Drive component 420; Glass door 500; door frame 510; side door panel 520. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0025] According to some embodiments of this utility model, refer to Figures 1 to 6 The locking structure includes a cover plate 100, a base plate 200, a latch 300, and a spring 400. The cover plate 100 is located to the left of the base plate 200. The cover plate 100 has a through hole 101 and a mounting hole 102, which is used to fix the cover plate 100 to a mounting surface. The mounting surface can be a narrow-frame profile door or window, cabinet door frame, or a specific decorative door casing. The base plate 200 and the cover plate 100 are detachably connected by bolts, and the cover plate 100 and the base plate 200 cooperate to form a mounting cavity 210. One end of the latch 300 has an annular baffle 310. The latch 300 passes through the through hole 101, and the annular baffle 310 is located inside the mounting cavity 210. The annular baffle 310 is located on the right side of the cover plate 100. The outer diameter of the annular baffle 310 is larger than the diameter of the through hole 101, so that the annular baffle 310 cannot pass through the through hole 101 to the left through the cover plate 100. The annular baffle 310 can wobble slightly inside the mounting cavity 210. The spring 400 is located inside the mounting cavity 210. One end of the spring 400 is connected to the base plate 200, and the other end of the spring 400 is connected to the latch 300. The spring 400 applies a force to the left to the latch 300.

[0026] This locking structure is small in size and occupies little space; and the cover plate 100 is plate-shaped, making it easy to install on narrow mounting surfaces. The thickness of the cover plate 100 and the base plate 200 can be controlled within a few millimeters, which is very small compared to the thickness of traditional box-shaped structures of tens of millimeters, thus perfectly adapting to modern narrow-frame doors and windows with a profile width of only one to two centimeters. During installation, the base plate 200 can be directly attached to the door frame, and the cover plate 100 is fixed to the door frame with bolts, without the need for destructive grooving of the door frame, maintaining the structural integrity and aesthetics of the door frame; alternatively, a groove can be cut into the door frame, the base plate 200 can be placed into the groove, so that the cover plate 100 is attached to the door frame, and the cover plate 100 is fixed to the door frame with bolts.

[0027] The latch 300 can wobble slightly relative to the cover plate 100, thereby improving the installation tolerance rate and eliminating the need for precise alignment with the keyhole 411. The spring 400 provides a corrective force to the latch 300, continuously applying a leftward tendency force. The floating latch 300 allows for millimeter-level horizontal, vertical, or angular deviations during installation. The latch 300 can compensate for these deviations using its wobble space, reducing installation requirements and improving installation efficiency and success rate.

[0028] According to some embodiments of this utility model, refer to Figure 3 The inner diameter of the mounting cavity 210 is d1, and the outer diameter of the annular baffle 310 is d2, where d1 is greater than d2. The annular baffle 310 can move slightly within the mounting cavity 210 in the vertical and horizontal directions, allowing the locking tongue 300 to have a slight wobbling effect relative to the base plate 200, thereby improving the installation error tolerance.

[0029] According to some embodiments of this utility model, refer to Figure 3 The depth of the mounting cavity 210 is h1, and the thickness of the annular baffle 310 is h2, where h1 is greater than h2. The annular baffle 310 can move slightly in the left and right direction within the mounting cavity 210, while the spring 400 can push the locking tongue 300 to the left to reset it, giving the locking tongue 300 a slight wobbling effect relative to the base plate 200, thereby improving the installation error tolerance.

[0030] According to some embodiments of this utility model, refer to Figures 1 to 3The left side of the base plate 200 has a first groove 220, which fits against the right side of the cover plate 100. A through hole 101 communicates with the first groove 220, forming an installation cavity 210. The rear side of the base plate 200 has a notch 221 communicating with the first groove 220. When the annular baffle 310 is stuck, a tool such as a stick or rod can be used to push the annular baffle 310 through the notch 221, causing it to loosen. In special circumstances, such as when a foreign object enters the installation cavity 210 causing the annular baffle 310 to jam, or when the spring 400 breaks and loses its restoring force, maintenance personnel can use a thin tool, such as a screwdriver or wire, to insert through the notch 221 and directly push the annular baffle 310 to force it to reset or release the jamming state. This avoids the need for forced disassembly of the lock in emergency situations.

[0031] According to some embodiments of this utility model, refer to Figures 1 to 3 The outer peripheral wall of the locking tongue 300 is provided with an annular locking groove 320. (Refer to...) Figure 3 The annular lock groove 320 can be inserted by the drive component 420 of the lock body 410, thereby restricting the movement of the bolt 300. For example, the door lock device includes a lock body 410 and a latch structure. The lock body 410 is installed on the door, and the latch structure is installed on the door frame. When the door is closed, the bolt 300 is inserted into the key hole 411 to the left, and the drive component 420 of the lock body 410 is inserted into the annular lock groove 320 in the vertical direction, thereby preventing the bolt 300 from disengaging from the key hole 411 to the right, thus locking the door. The drive component 420 can be a push rod motor, a cylinder, a lock pin driven by an electromagnet, an eccentric wheel driven by a manual knob or key, or a micro motor gear set in a smart lock, etc.

[0032] According to some embodiments of this utility model, refer to Figure 3 and Figure 6 The right end of the latch 300 is provided with a positioning groove 330, and the left end of the spring 400 is inserted into the positioning groove 330. The positioning groove 330 can restrict the movement of the spring 400. The positioning groove 330 can ensure that the axis of the spring 400 can remain basically coaxial with the axis of the latch 300 during compression and release, preventing the spring 400 from bending laterally under force, improving the stability of the spring 400 and the long-term reliability of the entire latch structure.

[0033] Understandably, during assembly, the locking tongue 300 is passed to the left through the through hole 101 of the cover plate 100, the annular baffle 310 remains on the right side of the through hole 101, the left end of the spring 400 is inserted into the positioning groove 330, the base is attached to the right side of the cover plate 100 to the left and is fixedly connected to the cover plate 100 by screws, so that the annular baffle 310 and the spring 400 are located in the mounting cavity 210.

[0034] According to some embodiments of this utility model, refer to Figure 6The right side of the cover plate 100 is provided with a second groove 110, the left side of the bottom plate 200 is attached to the right side of the cover plate 100, the through hole 101 communicates with the second groove 110, and the second groove 110 forms the mounting cavity 210.

[0035] Understandably, there are two design options: the mounting cavity 210 can be either a first recess 220 or a second recess 110. Functionally, the first recess 220 and the second recess 110 are completely equivalent. This design choice can be based on manufacturing convenience; for example, if the cover plate 100 is made using a die-casting process while the base plate 200 is made using sheet metal stamping, it is more convenient to form the recess on the die-cast cover plate 100 than on the base plate 200.

[0036] According to some embodiments of this utility model, refer to Figures 4 to 6 The cover plate 100 includes a first plate 121 and a second plate 122, which are fixedly connected. The first plate 121 has a through hole 101, and the second plate 122 has a mounting hole 102. The first plate 121 and the second plate 122 are perpendicular to each other, and the front end of the first plate 121 is fixedly connected to the right end of the second plate 122. The second plate 122 is used to connect with a mounting surface, thereby changing the orientation of the latch 300 to adapt to various installation environments. By designing the cover plate 100 into an L-shaped structure, the application scenarios of the product are expanded.

[0037] When the door frame and door leaf are not on the same plane, such as when an inward-opening door is installed on the inner side of the door frame, or when used for specific furniture or equipment enclosures, a cover plate 100 of a different shape can be used for both flat and vertical installations, providing flexibility for users.

[0038] Reference Figure 7 The cover plate 100 of the latch structure is fixedly installed on the door frame 510 of the glass door 500 by bolts. The lock body 410 is installed on the side door panel 520. The lock hole 411 of the lock body 410 faces backward. The glass door 500 can be rotated to open or close. When the glass door 500 is closed, the latch tongue 300 of the latch structure is inserted forward into the lock hole 411 of the lock body 410.

[0039] Reference Figure 8 The second plate 122 of the cover plate 100 of the latch structure is fixedly installed on the door frame 510 of the glass door 500 by bolts. The lock body 410 is installed on the side door panel 520. The lock hole 411 of the lock body 410 faces left. The glass door 500 can be opened or closed in the left and right directions. When the glass door 500 is closed, the latch tongue 300 of the latch structure is inserted into the lock hole 411 of the lock body 410 to the right.

[0040] In this specification, the reference to the term "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A locking structure, characterized in that, include: The cover plate (100) is provided with a through hole (101) and a mounting hole (102), wherein the mounting hole (102) is used to fix the cover plate (100) to the mounting surface; The base plate (200) is detachably connected to the cover plate (100), and the cover plate (100) and the base plate (200) cooperate to form an installation cavity (210). A locking tongue (300) has an annular baffle (310) at one end. The locking tongue (300) passes through the through hole (101), and the annular baffle (310) is located in the mounting cavity (210). The outer diameter of the annular baffle (310) is larger than the diameter of the through hole (101). A spring (400) is located in the mounting cavity (210). One end of the spring (400) is connected to the base plate (200), and the other end of the spring (400) is connected to the latch (300).

2. The locking structure according to claim 1, characterized in that, The inner diameter of the mounting cavity (210) is larger than the outer diameter of the annular baffle (310).

3. The locking structure according to claim 1, characterized in that, The depth of the mounting cavity (210) is greater than the thickness of the annular baffle (310).

4. The locking structure according to claim 1, characterized in that, The left side of the base plate (200) is provided with a first groove (220), the left side of the base plate (200) is attached to the right side of the cover plate (100), the through hole (101) communicates with the first groove (220), the first groove (220) constitutes the mounting cavity (210), and the rear side of the base plate (200) is provided with a notch (221) communicating with the first groove (220).

5. The locking structure according to claim 1, characterized in that, The outer peripheral wall of the latch (300) is provided with an annular locking groove (320), which can be inserted by the driving component (420) of the lock body (410) to restrict the movement of the latch (300).

6. The locking structure according to claim 1, characterized in that, The right end of the latch (300) is provided with a positioning groove (330), and the left end of the spring (400) is inserted into the positioning groove (330).

7. The locking structure according to claim 1, characterized in that, The right side of the cover plate (100) is provided with a second groove (110), the left side of the bottom plate (200) is attached to the right side of the cover plate (100), the through hole (101) communicates with the second groove (110), and the second groove (110) constitutes the mounting cavity (210).

8. The locking structure according to claim 1, characterized in that, The cover plate (100) includes a first plate (121) and a second plate (122), the first plate (121) and the second plate (122) are fixedly connected, the first plate (121) is provided with the through hole (101), and the second plate (122) is provided with the mounting hole (102).

9. The locking structure according to claim 8, characterized in that, The first plate (121) and the second plate (122) are perpendicular to each other, and the front end of the first plate (121) is fixedly connected to the right end of the second plate (122).

10. A door lock device, characterized in that, It includes the locking structure as described in any one of claims 1 to 9.

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