A bead-bumping door device

Abstract

The utility model discloses a kind of pearl bumping door locking devices, comprising: locating plate, for installing and fixed in the inner side wall of door frame, locating plate is equipped with locating counterbore;Base, for installing and fixed on the surface of door body and close to the outer side wall of door body, the inside of base is equipped with horizontal movable channel;Pearl bumping, along movable channel telescopic arrangement, pearl bumping is connected with the elastic member in the part of driving it to protrude from movable channel to butt in locating counterbore.Equipped with locating counterbore in the above locating plate is exposed in the inner side wall of door frame, base is exposed on the front surface or rear surface of door body, when door body moves to gate closing position, pearl bumping is elastically butt in locating counterbore under the action of elastic member, when certain magnitude of external force is applied to make pearl bumping overcome the action of elastic member and separate from locating counterbore, door body can be opened, using the pearl bumping door locking device is conducive to user direct application on ordinary house door, without drilling hole reconstruction door body, installation is convenient to use, reconstruction difficulty and cost are low.

Description

Technical Field

[0001] This utility model relates to a door latching device. Background Technology

[0002] In some doors that require frequent entry and exit, to prevent accidental locking and ensure the door can be opened or closed easily, and to allow users to open the door by pushing it forward, a latch is typically not installed between the door and the frame. Instead, a spring-loaded catch assembly is used between the door and the frame to facilitate opening and closing and prevent the door from being blown shut by the wind. This spring-loaded catch assembly generally includes a positioning plate fixed to one inner wall of the door frame and a spring-loaded catch extending from one side wall of the door. The positioning plate has a positioning groove that matches the shape of the catch. When the door is turned to the closed position, the catch extends into the positioning groove under the action of the spring.

[0003] However, since it is necessary to allow for the distance for the catch ball to reciprocate along the extension and retraction direction of the spring, it is often necessary to pre-drill a countersunk hole on one side wall of the door that extends along the width of the door, and install a base and a spring and catch ball on the base in the countersunk hole. This is not conducive to users modifying ordinary doors to adapt to the elastic catch ball assembly, and it will cause permanent damage to the door. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one of the objectives of this utility model is to provide a door latch device that is easy for users to directly apply to ordinary doors, is convenient to install and use, has low modification difficulty and cost, and can reduce damage to the door body.

[0005] A door latching device according to an embodiment of the present utility model includes: a positioning plate for mounting and fixing on an inner side wall of a door frame, the positioning plate having a positioning countersunk hole; a base for mounting and fixing on the surface of the door body and close to the outer side wall of the door body, the base having a horizontally oriented movable channel inside; and a latch ball that is telescopically arranged along the movable channel, the latch ball being connected to an elastic element that drives its portion to extend out of the movable channel to abut against the positioning countersunk hole.

[0006] The door latch device according to the embodiment of this utility model has at least the following beneficial effects: The above-described door catch device has a positioning plate openly mounted on one inner wall of the door frame and a base openly mounted on the front or rear surface of the door. When the door moves to the closed position, the catch ball elastically abuts against the positioning countersunk hole under the action of the elastic element, and the door remains in the closed position. When a certain amount of external force is applied to make the catch ball overcome the action of the elastic element and disengage from the positioning countersunk hole, the door can be opened. This door catch device is convenient for users to directly apply to ordinary doors without drilling holes to modify the door. It is easy to install and use, and the modification difficulty and cost are low.

[0007] In some embodiments of this utility model, the base has a mounting plate with multiple mounting through holes. Fastening screws are inserted through the mounting through holes to tighten onto the door body so that the mounting plate is flat against the surface of the door body.

[0008] In some embodiments of this utility model, the mounting plate is provided with an elongated through hole and a fixed through hole on both sides of the length direction of the movable channel, and the length direction of the elongated through hole is parallel to the length direction of the movable channel.

[0009] In some embodiments of this utility model, the base includes a sleeve and a cover plate. The sleeve has a cylindrical movable channel extending through both ends. The ball is a sphere with a diameter matching that of the movable channel. The cover plate closes one end of the movable channel, and the other end of the movable channel has a constricted portion to prevent the ball from disengaging. The elastic element is a compression spring with both ends abutting against the cover plate and the ball, respectively.

[0010] In some embodiments of this utility model, the sleeve is provided with a side opening that communicates with the movable channel, the ball can enter and exit the movable channel along the side opening, and the cover plate includes an end plate portion for closing one end of the movable channel and a side plate portion connected to the end plate portion and closing the side opening.

[0011] In some embodiments of this utility model, the side plate portion and the end plate portion are perpendicular to each other, and the side plate portion is provided with an insert plate portion at one end away from the end plate portion. The sleeve is provided with a slot that mates with the insert plate portion on one side of the movable channel. The end plate portion is provided with at least two screw through holes. The sleeve is provided with a threaded post sleeve corresponding to the screw through holes on the outer periphery of the movable channel. The fastening screw passes through the screw through hole and is connected to the threaded post sleeve.

[0012] In some embodiments of this utility model, the base has a mounting plate, which is fixed to the surface of the door body by adhesive bonding.

[0013] In some embodiments of this utility model, one side surface of the positioning plate is recessed to form the positioning countersunk hole, and the other side surface of the positioning plate is provided with a pad surrounding the outer periphery of the positioning countersunk hole. The thickness of the pad is greater than or equal to the size of the positioning countersunk hole protruding from the positioning plate. The pad is bonded or threaded to an inner sidewall of the door frame.

[0014] In some embodiments of this utility model, the positioning plate has an arc-shaped guide section protruding beyond the edge of the pad along the height direction on one side edge, and the arc-shaped guide section is bent toward the thickness direction of the pad.

[0015] In some embodiments of this utility model, the positioning plate is a long rectangular plate, one end of the rectangular plate is fixed to an inner side wall of the door frame, the free end of the rectangular plate extends out of the side of the door frame in the width direction, and the positioning countersunk hole is provided at the free end of the rectangular plate.

[0016] 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

[0017] 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 structure of one embodiment of the door latching device of this utility model when applied to a door body and a door frame; Figure 2 for Figure 1 A cross-sectional schematic diagram of the latching door device in the embodiment; Figure 3 for Figure 1 An exploded view of the structure of the latching door device in the embodiment; Figure 4 for Figure 3 A diagram from another perspective; Figure 5 This is a structural diagram of another embodiment of the door latching device of this utility model when applied to the door body and door frame.

[0018] Figure label: Door frame 10; door body 20; positioning plate 100; positioning countersunk hole 110; arc guide section 120; base 200; sleeve 210; movable channel 211; side opening 212; slot 213; threaded column sleeve 214; mounting plate 215; long through hole 216; fixing through hole 217; cover plate 220; end plate 221; side plate 222; insert plate 223; screw through hole 224; ball catch 300; elastic element 400; fastening screw 500; pad 600. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these 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.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," 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.

[0021] 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.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] See Figure 1 and Figure 2The present invention discloses a door latching device comprising: a positioning plate 100 for mounting and fixing on an inner side wall of a door frame 10, wherein the positioning plate 100 is provided with a positioning countersunk hole 110; a base 200 for mounting and fixing on the surface of a door body 20 and close to the outer side wall of the door body 20, wherein the base 200 is provided with a horizontally oriented movable channel 211; and a latch 300 that is telescopically arranged along the movable channel 211, wherein the latch 300 is connected to an elastic element 400 that drives its portion to extend out of the movable channel 211 to abut against the positioning countersunk hole 110.

[0024] The above-described latching device has a positioning plate 100 surface-mounted on one inner wall of the door frame 10, and a base 200 surface-mounted on the front or rear surface of the door body 20. When the door body 20 moves to the closed position, the latch 300 elastically abuts against the positioning countersunk hole 110 under the action of the elastic element 400, keeping the door body 20 in the closed position. When a certain amount of external force is applied to make the latch 300 overcome the action of the elastic element 400 and disengage from the positioning countersunk hole 110, the door body 20 can be opened. This latching device is convenient for users to directly apply to ordinary doors without drilling holes to modify the door body 20. It is easy to install and use, and the modification difficulty and cost are low. It is conceivable that users can remove the original latch assembly and surface-mount the above latching device on the door body 20 and the door frame 10 to transform an ordinary door into a simple opening and closing mechanism. When it is necessary to restore the original state, simply remove the latching device and then install the original latch assembly.

[0025] See Figure 1 , Figure 3 and Figure 4 In some embodiments of this utility model, the base 200 has a mounting plate 215, which has multiple mounting through holes. Fastening screws 500 pass through these holes to tighten onto the door body 20, causing the mounting plate 215 to lie flat against the surface of the door body 20. This structure allows for quick and stable fixing of the base 200 to the front or rear surface of the door body 20. Alternatively, if the material of the door body 20 cannot accommodate the fastening screws 500, the mounting plate 215 can be fixed to the surface of the door body 20 by adhesive bonding. The adhesive is typically double-sided tape or a cured adhesive.

[0026] See Figure 3 and Figure 4In some embodiments of this utility model, the mounting plate 215 is provided with an elongated through hole 216 and a fixed through hole 217 on both sides of the length direction of the movable channel 211. The length direction of the elongated through hole 216 is parallel to the length direction of the movable channel 211. It should be noted that, under the premise of using the fastening screw 500 to be tightened to the door body 20 through the mounting through hole, in order to facilitate the user to adjust the distance between the ball catch 300 and the positioning countersunk hole 110, the user can first pass the fastening screw 500 through the elongated through hole 216 and tighten it to the door body 20 to complete the pre-installation of the base 200. At this time, the base 200 can also move closer to or further away from the positioning plate 100 along the length direction of the elongated through hole 216. After the relative position of the ball catch 300 and the positioning countersunk hole 110 is adjusted to the correct position, another fastening screw 500 is then passed through the fixed through hole 217 and tightened to the door body 20 to achieve complete fixation of the base 200.

[0027] See Figures 2 to 4 In some embodiments of this utility model, the base 200 includes a sleeve 210 and a cover plate 220. The sleeve 210 has a cylindrical movable channel 211 extending through both ends. The ball bearing 300 is a sphere with a diameter matching that of the movable channel 211. The cover plate 220 closes one end of the movable channel 211, and the other end of the movable channel 211 has a constricted portion to prevent the ball bearing 300 from disengaging. The elastic element 400 is a compression spring with both ends abutting against the cover plate 220 and the ball bearing 300, respectively. This structure reduces the manufacturing difficulty of the base 200 and the movable channel 211, reduces the assembly difficulty of the ball bearing 300 and the elastic element 400, and improves production efficiency and yield. Understandably, the compression spring causes a portion of the ball 300 to extend beyond the constricted portion and elastically abut against the positioning countersunk hole 110. The radial dimension of the constricted portion is smaller than the diameter of the ball 300 to prevent the ball 300 from completely disengaging from the movable channel 211.

[0028] See Figure 3 and Figure 4 In some embodiments of this utility model, in order to further reduce the assembly difficulty of the ball bearing 300 and the manufacturing difficulty of the movable channel 211, the side of the sleeve 210 is provided with a side opening 212 that communicates with the movable channel 211. The ball bearing 300 can enter and exit the movable channel 211 along the side opening 212. The cover plate 220 includes an end plate portion 221 for closing one end of the movable channel 211 and a side plate portion 222 connected to the end plate portion 221 and closing the side opening 212.

[0029] See Figure 3 and Figure 4In some embodiments of this utility model, the side plate portion 222 and the end plate portion 221 are perpendicular to each other. The side plate portion 222 has an insertion plate portion 223 at one end away from the end plate portion 221. The sleeve member 210 has a slot 213 on one side of the movable channel 211 that mates with the insertion plate portion 223. The end plate portion 221 has at least two through holes 224. The sleeve member 210 has a threaded sleeve 214 corresponding to the through holes 224 on the outer periphery of the movable channel 211. A fastening screw 500 passes through the through hole 224 and connects to the threaded sleeve 214. This structure reduces the number of fastening screws 500 required to connect the cover plate 220 to the sleeve member 210. The sleeve member 210 can be obtained by injection molding or machining, and the cover plate 220 can be made of thin-walled sheet metal.

[0030] See Figure 2 and Figure 4 In some embodiments of this utility model, one side surface of the positioning plate 100 is recessed to form the positioning countersunk hole 110, and the other side surface of the positioning plate 100 is provided with a pad 600 surrounding the outer periphery of the positioning countersunk hole 110. The thickness of the pad 600 is greater than or equal to the size of the positioning countersunk hole 110 protruding from the positioning plate 100. The pad 600 is bonded or threaded to an inner wall of the door frame 10. Typically, the positioning countersunk hole 110 is manufactured by stamping, resulting in a protruding portion on one side surface of the positioning plate 100. This necessitates the machining of a groove on the inner wall of the door frame 10 to avoid the protruding portion of the positioning countersunk hole 110, potentially causing damage to the door frame 10. The above technical solution uses the pad 600 to compensate for the protruding portion of the positioning countersunk hole 110, eliminating the need to create a groove on the inner wall of the door frame 10 and preventing damage to the door frame 10.

[0031] See Figure 2 and Figure 4 In some embodiments of this utility model, the positioning plate 100 has an arc-shaped guide section 120 protruding beyond the edge of the pad 600 along the height direction on one side edge. The arc-shaped guide section 120 is curved towards the thickness direction of the pad 600. It is conceivable that when the door 20 rotates until the catch ball 300 just contacts the side of the assembly of the positioning plate 100 and the pad 600, if the thickness direction of the assembly of the positioning plate 100 and the pad 600 is planar, it is easy to cause jamming. The arc-shaped guide section 120 can guide the catch ball 300 to gradually retract into the moving channel 211, improving the smoothness of closing the door.

[0032] See Figure 5In some embodiments of this utility model, the positioning plate 100 is a long rectangular plate. One end of the rectangular plate is fixed to an inner sidewall of the door frame 10, and the free end of the rectangular plate extends beyond the side of the door frame 10 in the width direction. The positioning countersunk hole 110 is located at the free end of the rectangular plate. It should be noted that in some usage scenarios, the width of the door frame 10 is smaller than the length of the positioning plate 100. For such narrow door frames 10, this problem can be solved by having one end of the rectangular plate extend beyond the side of the door frame 10 in the width direction.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] 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 door latching device, characterized in that, include: A positioning plate (100) is used to be installed and fixed on an inner side wall of the door frame (10), and the positioning plate (100) is provided with a positioning countersunk hole (110). A base (200) is used to be installed and fixed on the surface of the door body (20) and close to the outer side wall of the door body (20). The base (200) has a horizontally oriented movable channel (211) inside. A ball bearing (300) is telescopically arranged along the movable channel (211), and the ball bearing (300) is connected to an elastic element (400) that drives its portion to extend out of the movable channel (211) to abut against the positioning countersunk hole (110).

2. The door latching device according to claim 1, characterized in that: The base (200) has a mounting plate (215) with multiple mounting through holes. Fastening screws (500) are inserted through the mounting through holes to tighten onto the door body (20) so that the mounting plate (215) is flat against the surface of the door body (20).

3. The door latching device according to claim 2, characterized in that: The mounting plate (215) has a long through hole (216) and a fixed through hole (217) on both sides of the length direction of the movable channel (211), and the length direction of the long through hole (216) is parallel to the length direction of the movable channel (211).

4. The door latching device according to claim 1, characterized in that: The base (200) includes a sleeve (210) and a cover plate (220). The sleeve (210) has a cylindrical movable channel (211) extending through both ends. The ball (300) is a sphere with a diameter matching that of the movable channel (211). The cover plate (220) closes one end of the movable channel (211). The other end of the movable channel (211) has a constricted portion that prevents the ball (300) from disengaging. The elastic element (400) is a compression spring with both ends abutting against the cover plate (220) and the ball (300).

5. A door latching device according to claim 4, characterized in that: The sleeve (210) has a side opening (212) that communicates with the movable channel (211). The ball (300) can enter and exit the movable channel (211) along the side opening (212). The cover plate (220) includes an end plate portion (221) for closing one end of the movable channel (211) and a side plate portion (222) connected to the end plate portion (221) and closing the side opening (212).

6. A door latching device according to claim 5, characterized in that: The side plate portion (222) and the end plate portion (221) are perpendicular to each other. The side plate portion (222) is provided with an insert plate portion (223) at one end away from the end plate portion (221). The sleeve (210) is provided with a slot (213) that cooperates with the insert plate portion (223) on one side of the movable channel (211). The end plate portion (221) is provided with at least two screw through holes (224). The sleeve (210) is provided with a threaded sleeve (214) corresponding to the screw through hole (224) on the outer periphery of the movable channel (211). The fastening screw (500) passes through the screw through hole (224) and is connected to the threaded sleeve (214).

7. The door latching device according to claim 1, characterized in that: The base (200) has a mounting plate (215), which is fixed to the surface of the door (20) by adhesive bonding.

8. A door latching device according to claim 1, characterized in that: The positioning plate (100) has a recessed side surface to form the positioning countersunk hole (110), and the other side surface of the positioning plate (100) is provided with a pad (600) surrounding the outer periphery of the positioning countersunk hole (110). The thickness of the pad (600) is greater than or equal to the size of the positioning countersunk hole (110) protruding from the positioning plate (100). The pad (600) is bonded or threaded to an inner wall of the door frame (10).

9. A door latching device according to claim 8, characterized in that: The positioning plate (100) has an arc-shaped guide section (120) protruding from the side edge of the pad (600) along the height direction on one side edge. The arc-shaped guide section (120) is bent toward the thickness direction of the pad (600).

10. A door latching device according to claim 1, characterized in that: The positioning plate (100) is a long rectangular plate. One end of the rectangular plate is fixed to an inner side wall of the door frame (10). The free end of the rectangular plate extends out of the side of the door frame (10) in the width direction. The positioning countersunk hole (110) is located at the free end of the rectangular plate.

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