Automatic mortise latch structure

Abstract

The utility model discloses an automatic concealed latch structure, including touch tongue, latch bar, and main body support still include the compression drive assembly of setting in the main body support, when the touch tongue is extruded and is retracted to the main body support side, the compression drive assembly is extruded and drives the latch bar to stretch out to the side to the touch tongue of the utility model, the automatic concealed latch structure in, need not to carry out the manual locking action to realize the process of closing the door and automatically lock the door, greatly improved the security and the convenience of operation.

Description

Technical Field

[0001] This utility model relates to a door lock structure, and more particularly to an automatic concealed bolt structure applied to double doors. Background Technology

[0002] For situations such as warehouse security and fire zone isolation, it is usually necessary to install double doors, with one door designated as the main door and the other as the child door.

[0003] In actual operation, it is necessary to ensure that the child door can rotate freely when the mother door is not closed; and that the child door is fixed and cannot rotate when both the mother door and the child door are closed at the same time.

[0004] Therefore, it is necessary to establish appropriate mechanisms to ensure the reliable implementation of the above actions. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing an automatic concealed latch structure.

[0006] The automatic concealed latch structure of this utility model includes an actuating tongue, a latch rod, and a main support, and also includes a pressing drive assembly disposed on the main support;

[0007] When the actuating tongue is squeezed and retracts towards the main support, the pressing drive assembly is squeezed by the actuating tongue and drives the pin rod to extend to the side.

[0008] In the automatic concealed pin structure of this utility model, the main support includes a drive support frame and a pin rod support frame;

[0009] The pressing drive assembly is disposed on the drive support frame, and the pin rod is disposed on the pin rod support frame.

[0010] In the automatic concealed pin structure of this utility model, the pin rod support frame includes an upper support plate and a lower support plate that are arranged parallel to the inner side of the vertical panel of the main body support.

[0011] A through hole is provided at the center of both the upper support plate and the lower support plate, and the pin rod passes vertically through the through hole of the upper support plate and the through hole of the lower support plate.

[0012] In the automatic concealed pin structure of this utility model, the drive support frame includes two support plates that protrude inward from the vertical panel of the main support.

[0013] The pressure-driven assembly is positioned between the two support plates.

[0014] In the automatic concealed pin structure of this utility model, the pressing drive assembly includes a transmission seat with an inclined portion on the rear side, and a crank drive portion and a vertical drive portion are provided inside the transmission seat;

[0015] One end of the crank drive unit is pivotally connected to the support plate, the other distal end is pivotally connected to the bottom of the vertical drive unit, and the other proximal end is provided with a transmission shaft, which abuts against the inclined part of the transmission seat.

[0016] The top of the vertical drive unit is pivotally connected to the bottom of the pin rod;

[0017] When the actuating tongue is squeezed and retracts towards the main support side, the transmission seat is squeezed by the actuating tongue and retracts towards the inside of the vertical panel. Its inclined portion pushes the opposite proximal end of the crank drive unit to rise, and drives the opposite distal end to rise.

[0018] The vertical drive unit is pushed upward synchronously by the opposite distal end, and pushes the pin rod upward as well.

[0019] In the automatic concealed pin structure of this utility model, the pin rod includes a guide sleeve and a rod inserted into the guide sleeve, and a buffer spring is provided between the rod and the guide sleeve for pushing the rod upward.

[0020] The bottom of the guide sleeve is pivotally connected to the top of the vertical drive unit, and a return spring is provided at the lower part of the guide sleeve to push the guide sleeve downward.

[0021] The automatic concealed pin structure of this utility model also includes a reset top plate disposed at the top of the vertical drive unit, and the reset spring is placed between the reset top plate and the main support.

[0022] The automatic concealed latch structure described in this utility model can automatically lock the door during the closing process without the need for manual locking, greatly improving the safety and convenience of operation. Attached Figure Description

[0023] Figure 1 This is an overall schematic diagram of the automatic concealed latch structure described in this utility model;

[0024] Figure 2 This is an exploded view of the automatic concealed latch structure described in this utility model. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0026] like Figure 1 , Figure 2 As shown, the automatic concealed latch structure of this utility model includes an actuating tongue 40, a latch rod 30, and a main support, and also includes a pressing drive assembly 4 disposed on the main support. When the actuating tongue 40 is pressed (for example, when the sub-door is closed towards the main door which is in a closed state, the actuating tongue 40 disposed on the sub-door is blocked and pressed by the baffle 10 disposed on the main door; when the actuating tongue 40 is not pressed, it can be restricted by the panel 20 and will not fall off) and retracts towards the main support, the pressing drive assembly 4 is pressed by the actuating tongue 40 in the retracted state and drives the latch rod 30 to extend to the side (vertically upward in this embodiment), so that the front end of the latch rod 30 is inserted into the latch hole pre-set in the door frame, and the sub-door is fixed.

[0027] Specifically, in the automatic concealed pin structure of this utility model, the main support includes a drive support frame 5 and a pin rod support frame 44. The pressing drive assembly 4 is disposed on the drive support frame 5, and the pin rod 30 is disposed on the pin rod support frame 44. The pin rod support frame 44 specifically includes an upper support plate 441 and a lower support plate 442 arranged parallel to each other on the inner side of the vertical panel 50 of the main support (the upper support plate 441 and the lower support plate 442 can be connected by a vertically arranged connecting plate, and the connecting plate is fixed to the main support by a fixing rod 511, so that the upper support plate 441 and the lower support plate 442 are fixed to the main support as a whole). A through hole 443 is provided at the center of both the upper support plate 441 and the lower support plate 442, and the pin rod 30 vertically passes through the through hole 443 of the upper support plate 441 and the through hole 443 of the lower support plate 442. The drive support frame 5 includes two support plates 52 that protrude inward from the vertical panel 50 of the main support, and the pressing drive assembly 4 is disposed between the two support plates 52.

[0028] In the automatic concealed pin structure of this utility model, the pressing drive assembly 4 specifically includes a transmission seat 41 with an inclined portion 441 on the rear side. The transmission seat 41 is provided with a crank drive portion 43 and a vertical drive portion 42. One end 430 of the crank drive portion 43 is pivotally connected to the pivot hole 520 of the support plate 52 via a rotating rod 431. The opposite distal end 436 is pivotally connected to the bottom of the vertical drive portion 42 via a rotating rod 422 (a transmission sleeve 423 is sleeved on the rotating rod 422). The opposite proximal end 435 is provided with a transmission shaft 433 (the two ends of the transmission shaft 433 are respectively provided with locking pieces 432 and 434), and the transmission shaft 433 abuts against the inclined portion 441 of the transmission seat 41.

[0029] The top of the vertical drive unit 42 is pivotally connected to the bottom of the pin 30 via a rotating rod 421. When the actuating tongue 40 is pressed and retracts towards the main support, the transmission seat 41 is pressed by the actuating tongue 40 and retracts towards the inside of the vertical panel 52. Its inclined portion 411 pushes the transmission shaft 433, thereby pushing the opposite proximal end 435 of the crank drive unit 43 to gradually rise along the inclined portion 411, and further driving the opposite distal end 436 to rise. At this time, the vertical drive unit 42 is pushed synchronously upward by the rotating rod 422 provided on the opposite distal end 436, and pushes the pin 30 upward, so that the front end of the pin 30 can be inserted into the pin hole pre-set in the door frame, thereby fixing the sub-door.

[0030] In the automatic concealed latch structure of this utility model, the latch rod 30 specifically includes a guide sleeve 32 and a rod 31 inserted into the guide sleeve 32. A buffer spring 34 is provided between the rod 31 and the guide sleeve 32 to push the rod 31 upward (the upper part of the buffer spring 34 is limited by the rod 35). When the latch rod 30 is pushed upward by the vertical drive part 42, the front end of the rod 31 will insert into the latch hole on the door frame; when the front end of the rod 31 is not completely aligned with the latch hole (i.e., the front end of the rod 31 has already pressed against the door frame), the buffer spring 34 can be compressed, causing the rod 31 to move into the guide sleeve 32, preventing the rod 31 from completely jamming with the door frame and making it impossible to close the sub-leaf door. The bottom of the guide sleeve 32 is also pivotally connected to the top of the vertical drive part 42 via a rotating rod 421. A return spring 33 is also provided at the lower part of the guide sleeve 32 to push the guide sleeve 32 downward. That is, the top of the return spring 33 abuts against the main support (specifically, the lower surface of the lower support plate 442). A return top plate 45 is provided at the top of the vertical drive part 42, and the bottom of the return spring 33 abuts against the upper surface of the return top plate 45. Since the lower support plate 442 is fixedly installed, the return spring 33 pushes the guide sleeve 32 downward through the return top plate 45, so that the pin rod 30 will not extend and interfere with the door frame when it is not driven to rise.

[0031] The automatic concealed latch structure described in this utility model can automatically lock the door during the closing process without the need for manual locking, greatly improving the safety and convenience of operation.

[0032] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An automatic concealed latch structure, comprising an actuating tongue, a latch rod, and a main support, characterized in that, It also includes a pressure-driving assembly disposed on the main support; When the actuating tongue is squeezed and retracts towards the main support, the pressing drive assembly is squeezed by the actuating tongue and drives the pin rod to extend to the side.

2. The automatic concealed latch structure as described in claim 1, characterized in that, The main support frame includes a drive support frame and a pin rod support frame; The pressing drive assembly is disposed on the drive support frame, and the pin rod is disposed on the pin rod support frame.

3. The automatic concealed latch structure as described in claim 2, characterized in that, The pin support frame includes an upper support plate and a lower support plate arranged parallel to the inner side of the vertical panel of the main support frame; A through hole is provided at the center of both the upper support plate and the lower support plate, and the pin rod passes vertically through the through hole of the upper support plate and the through hole of the lower support plate.

4. The automatic concealed latch structure as described in claim 2, characterized in that, The drive support frame includes two support plates that protrude inward from the vertical panel of the main support. The pressure-driven assembly is positioned between the two support plates.

5. The automatic concealed latch structure as described in claim 4, characterized in that, The pressure drive assembly includes a transmission seat with an inclined portion on the rear side, and a crank drive portion and a vertical drive portion are disposed inside the transmission seat; One end of the crank drive unit is pivotally connected to the support plate, the other distal end is pivotally connected to the bottom of the vertical drive unit, and the other proximal end is provided with a transmission shaft, which abuts against the inclined part of the transmission seat. The top of the vertical drive unit is pivotally connected to the bottom of the pin rod; When the actuating tongue is squeezed and retracts towards the main support side, the transmission seat is squeezed by the actuating tongue and retracts towards the inside of the vertical panel. Its inclined portion pushes the opposite proximal end of the crank drive unit to rise, and drives the opposite distal end to rise. The vertical drive unit is pushed upward synchronously by the opposite distal end, and pushes the pin rod upward as well.

6. The automatic concealed latch structure as described in claim 5, characterized in that, The pin includes a guide sleeve and a rod inserted into the guide sleeve, and a buffer spring is provided between the rod and the guide sleeve to push the rod upward. The bottom of the guide sleeve is pivotally connected to the top of the vertical drive unit, and a return spring is provided at the lower part of the guide sleeve to push the guide sleeve downward.

7. The automatic concealed latch structure as described in claim 6, characterized in that, It also includes a reset top plate disposed at the top of the vertical drive unit, and the reset spring is placed between the reset top plate and the main support.

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