A push-pull door lock structure

Abstract

The application provides a push-pull door lock structure, which comprises a handle, a front seat, a rear seat and a lock body, the lock body comprises a latch assembly, a push-pull assembly and a locking assembly, the latch assembly comprises a latch and a sliding rack, the front seat and the rear seat are both provided with a lever, one end of the lever is connected with the handle, and the other end is movably connected with the push-pull assembly; the push-pull assembly comprises a pull sliding sleeve, a push sliding sleeve, a pull lever and a push lever; the locking assembly comprises a sliding lock rod; external force acts on the handle, the handle drives the lever to drive the push sliding sleeve and the pull sliding sleeve, the push sliding sleeve drives the push lever to move, the pull sliding sleeve drives the pull lever to move, the push lever and the pull lever interact to make the latch rotate reversely, and the door is opened; after the door is closed, the sliding lock rod is abutted against the sliding rack, and the latch is locked. The application can solve the inconvenience of the existing rotary door opening mode.

Description

[0001] This invention is a divisional application of Chinese patent application filed on January 20, 2019, with application number 201910050793.0 and title "A Push-Pull Door Lock Structure". Technical Field

[0002] This invention relates to the field of door lock structure technology, and in particular to a door lock structure for a push-pull type door. Background Technology

[0003] Currently, most common household interior door locks use rotary handles. When the lock is not engaged, the handle needs to be turned to open the door, whether inside or outside. This method of opening the door does not quite conform to people's habits, as people are more accustomed to opening and closing doors by pushing or pulling handles. Especially in some special situations, such as when carrying heavy objects, using a rotary handle is very inconvenient. Summary of the Invention

[0004] In view of the above problems, the purpose of this invention is to provide a push-pull door lock structure to solve the problem of inconvenience of the existing rotary door opening method.

[0005] This invention provides a push-pull door lock structure, comprising: a handle and front seat disposed on one side of the door leaf, another handle and rear seat disposed on the other side of the door leaf, and a lock body disposed inside the door leaf. The lock body includes a latch assembly, a push-pull assembly, and a locking assembly. The latch assembly includes a latch and a sliding rack.

[0006] Both the front seat and the rear seat are provided with levers. The levers include a front lever and a rear lever. The front lever passes through the front seat, one end of which is connected to a handle located on one side of the door leaf, and the other end is movably connected to the push-pull assembly. The rear lever passes through the rear seat, one end of which is connected to a handle located on the other side of the door leaf, and the other end is movably connected to the push-pull assembly.

[0007] The push-pull assembly includes: a pull sleeve, a push sleeve embedded in the pull sleeve, a pull block, a push block, and a sleeve return spring; a push plate is provided at the rear end of the push sleeve, and a pull plate is provided at the rear end of the pull sleeve; a protruding push plate is provided at the upper end of the push block, a first rotating shaft is provided in the middle of the push block, and a first transmission surface is provided on the side of the push block; a protruding pull plate is provided at the upper end of the pull block, a second rotating shaft is provided in the middle of the pull block, a second transmission surface is provided on one side of the second rotating shaft, and the oblique latch block is provided on the other side of the second rotating shaft; the upper end of the push plate contacts the push plate, and the upper end of the pull plate contacts the pull sleeve; the first transmission surface contacts the second transmission surface, and the oblique latch block is engaged with the protrusion at the rear of the oblique latch; the locking assembly includes a sliding locking rod, wherein...

[0008] An external force is applied to the handle, which drives the front lever to move the push-slide sleeve. The push-slide sleeve drives the push-pull block to move. The handle drives the rear lever to move the pull-slide sleeve. The pull-slide sleeve drives the pull-pull block to move, thereby driving the push-pull block and the pull-pull block to move. This causes the oblique tongue block at one end of the pull-pull block to no longer jam the protrusion of the oblique tongue, causing the oblique tongue to rotate in a different direction, thus opening the door.

[0009] After the door is closed, the sliding latch is locked by the sliding locking rod contacting the sliding rack.

[0010] Furthermore, in a preferred embodiment, the lock body further includes a cover, within which a slot and a sliding groove are provided; wherein,

[0011] The oblique tongue assembly further includes a fixing seat disposed within the slot, a pinion gear meshing with the sliding rack, and an oblique tongue return spring; wherein,

[0012] The sliding rack is limited to move within the groove. A push rod is provided at one end of the sliding rack, a locking protrusion is provided in the middle of the sliding rack, and a rack is provided at the other end of the sliding rack.

[0013] The oblique tongue return spring is disposed between the fixed base and the top rod, providing a return force for the oblique tongue to return;

[0014] The push rod passes through the side wall of the fixed seat and abuts against the oblique tongue, and the rack meshes with the pinion.

[0015] Furthermore, in a preferred embodiment, the locking assembly includes: a latch that abuts against the sliding lock lever, a lock lever return spring, and a latch return spring disposed on one side of the latch; wherein,

[0016] The sliding locking lever includes a locking lever at the upper end and a locking lever block at the lower end that abuts against the lever.

[0017] The locking rod return spring is sleeved on the locking rod, and the nut return spring provides a reset force for the nut.

[0018] Furthermore, a preferred embodiment is that the locking lever rises or falls under the action of the locking lever lever and the locking pin, wherein when the locking lever rises, its upper end abuts against the locking protrusion to lock the tongue.

[0019] Furthermore, in a preferred embodiment, the push-pull assembly further includes a toggle return spring, wherein,

[0020] The sliding sleeve return spring is disposed at the front end of the push sliding sleeve and the pull sliding sleeve, and the push sliding sleeve and the pull sliding sleeve are reset by the sliding sleeve return spring.

[0021] Furthermore, the preferred solution is,

[0022] The push block return spring is installed above the pull block, and the oblique tongue locking block is secured to the oblique tongue by the push block return spring.

[0023] In addition, a preferred embodiment is that the lock body further includes an outer liner plate and a bottom assembly, with the first pivot and the second pivot fixed on the bottom assembly.

[0024] As can be seen from the above technical solution, the push-pull door lock structure provided by the present invention uses a handle to drive a lever to move the push-slide sleeve and the pull-slide sleeve. The push-slide sleeve drives the push-pull block to move, and the pull-slide sleeve drives the pull-pull block to move. The interaction between the push-pull block and the pull-pull block causes the latch to rotate in a different direction, thereby opening the door. The latch is locked by the sliding lock rod abutting against the sliding rack. This solves the problem of the inconvenience of the existing rotary door opening method.

[0025] To achieve the foregoing and related objectives, one or more aspects of the invention include the features that will be described in detail below. The following description and accompanying drawings illustrate certain exemplary aspects of the invention. However, these aspects indicate only a few of the various ways in which the principles of the invention can be used. Furthermore, the invention is intended to encompass all such aspects and their equivalents. Attached Figure Description

[0026] Other objects and results of the invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings. In the drawings:

[0027] Figure 1 This is a three-dimensional schematic diagram of a push-pull door lock structure according to Embodiment 1 of the present invention;

[0028] Figure 2 This is a partially exploded view of the push-pull door lock structure according to Embodiment 1 of the present invention;

[0029] Figure 3 This is a schematic diagram of the lock body portion according to Embodiment 1 of the present invention;

[0030] Figure 4 This is a schematic diagram of the oblique tongue structure according to an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the pull block structure according to an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the lock body portion according to Embodiment 2 of the present invention.

[0033] The reference numerals in the figures include:

[0034] 1. Holding hands;

[0035] 2. Front seat; 21. Front lever;

[0036] 3. Rear seat; 31. Rear lever;

[0037] 4. Lock body; 41. Lock body outer liner; 411. Slanted tongue hole; 412. Square tongue hole; 42. Box cover; 421. Slot; 422. Slide groove.

[0038] 44. Box bottom assembly; 441. Box bottom; 442. Lock body lining plate; 443. Plunger.

[0039] 45. Slanted tongue assembly; 451. Slanted tongue; 452. Sliding rack; 4521. Push rod; 4522. Locking protrusion; 453. Pinion; 454. Fixing base; 455. Slanted tongue return spring.

[0040] 46. ​​Push-pull assembly; 461. Push sleeve; 4611. Push slide; 462. Pull sleeve; 4621. Pull slide; 463. Push block; 4631. Push slide; 4632. First rotating shaft; 4633. First transmission surface; 464. Pull block; 4641. Pull slide; 4642. Second rotating shaft; 4643. Second transmission surface; 4644. Slanted tongue block; 465. Sleeve return spring; 466. Block return spring;

[0041] 47. Locking assembly; 473. Pulley; 474. Sliding locking lever; 4741. Locking lever; 4742. Locking lever toggle; 475. Pulley return spring; 476. Locking lever return spring.

[0042] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation

[0043] In the following description, numerous specific details are set forth for illustrative purposes and to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form for ease of description of one or more embodiments.

[0044] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0045] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0046] like Figures 1 to 3As shown, the push-pull door lock structure provided by the present invention includes a handle 1 and a front seat 2 located on one side of the door leaf, another handle 1 and a rear seat 3 located on the other side of the door leaf, and a lock body 4 located inside the door leaf. The lock body 4 includes a latch assembly 45, a push-pull assembly 46, and a locking assembly 47. The latch assembly includes a latch 451 and a sliding rack 452. A lever is provided through both the front seat 2 and the rear seat 3. The lever includes a front lever 21 and a rear lever 31. The front lever 21 passes through the front seat 2, with one end connected to the handle 1 located on one side of the door leaf and the other end movably connected to the push-pull assembly 46. The rear lever 31 passes through the rear seat 3. One end of the rear lever 31 is connected to the handle 1 located on the other side of the door leaf, and the other end is movably connected to the push-pull assembly 46. The push-pull assembly 46 includes: a pull sleeve 462, a push sleeve 461 embedded in the pull sleeve 462, a pull block 464, a push block 463, and a sleeve return spring 465. A push plate 4611 is provided at the rear end of the push sleeve 461, and a pull plate 4621 is provided at the rear end of the pull sleeve 462. A protruding push plate 4631 is provided at the upper end of the push block 463, and a first rotating shaft 4632 is provided in the middle of the push block 463. A first transmission surface 4633 is provided on the side of the push block 463; a protruding pull plate 4641 is provided on the upper end of the pull block 464; a second rotating shaft 4642 is provided in the middle of the pull block 464; a second transmission surface 4643 is provided on one side of the second rotating shaft 4642; and the oblique tongue block 4644 is provided on the other side of the second rotating shaft 4642; the upper end of the push plate 4631 contacts the push slide plate 4611, and the upper end of the pull plate 4641 contacts the pull slide sleeve 462; the first transmission surface 4633 contacts the second transmission surface 4643, and the oblique tongue block 4644... Block 4644 is engaged with the protrusion at the rear of the tongue 454. The locking assembly 47 includes a sliding locking rod 474. When an external force is applied to the handle 1, the handle 1 drives the front lever to move the push-slide sleeve 461. The push-slide sleeve 461 drives the push-pull block 463 to move. The handle 1 drives the rear lever 31 to move the pull-slide sleeve 462. The pull-slide sleeve 462 drives the pull-pull block 464 to move, thereby driving the push-pull block 463 and the pull-pull block 464 to move. This causes the tongue locking block 4644 at one end of the pull-pull block 464 to no longer lock the protrusion of the tongue 451, causing the tongue 451 to rotate in a different direction and open the door.

[0047] Specifically, the push-pull door lock structure includes a handle 1, a front seat 2, a rear seat 3, and a lock body 4. The front seat 2 passes through a front lever 21, and the rear seat 3 passes through a rear lever 31. The lock body 4 includes an outer liner 41, a cover 42, a bottom assembly 44, a latch bolt assembly 45, a push-pull assembly 46, and a locking assembly 47. The cover 42 has a slot 421 and a slide groove 422 inside; the bottom assembly 44 of the lock body is welded to the bottom 441 and the inner liner 442 of the lock body; the outer liner 41 of the lock body has a latch bolt hole 411 and a square latch bolt hole 412, and several studs 443 are fixed at corresponding positions on the bottom 441.

[0048] like Figures 3 to 6 As shown, the inclined tongue assembly 45 includes an inclined tongue 451, a sliding rack 452, a pinion 453, a fixed seat 454, and an inclined tongue return spring 455. The inclined tongue 451 has a protrusion 4511; the fixed seat 454 is placed inside the box bottom 441 and secured with the slot 421 of the box cover 42; one end of the sliding rack 452 extends out with a push rod 4521, and a locking protrusion 4522 is provided in the middle of the sliding rack 452; the end of the push rod 4521 passes through the side wall of the fixed seat 454 and abuts against the rear of the inclined tongue 451; the rack on the sliding rack 452 meshes with the pinion 453, and the sliding rack 452 can slide along the slide groove 422; the inclined tongue return spring 455 is engaged between the fixed seat 454 and the push rod 4521.

[0049] The push-pull assembly 46 includes a push-sliding sleeve 461, a pull-sliding sleeve 462, a push-pull block 463, a pull-pull block 464, a sleeve return spring 465, and a block return spring 466. The push-sliding sleeve 461 has a push-sliding piece 4611 at its rear end, and the pull-sliding sleeve 462 has a pull-sliding piece 4621 at its rear end. The push-sliding sleeve 461 is embedded within the pull-sliding sleeve 462. The sleeve return spring 465 is located at the front ends of both the push-sliding sleeve 461 and the pull-sliding sleeve 462, allowing both the push-sliding sleeve 461 and the pull-sliding sleeve 462 to be reset. The push-pull block 463 has a push-pull piece 4631 protruding from its upper end, a first rotating shaft 4632 in its middle, and a first transmission surface 4633 on its side. The pull-pull block 464 has a pull-pull piece 466 protruding from its upper end. 41. A second rotating shaft 4642 is provided in the middle. A second transmission surface 4643 is provided on one side of the second rotating shaft 4642 and a tongue-and-groove block 4644 is provided on the other side. The upper end of the push-pull plate 4631 is in contact with the push-slide plate 4611, and the upper end of the pull-pull plate 4641 is in contact with the pull-slide sleeve 462. The first rotating shaft 4632 and the second rotating shaft 4642 are fixed on the stud 443 of the bottom of the box 441. The first transmission surface 4633 is in contact with the second transmission surface 4643. The tongue-and-groove block 4644 is locked on the protrusion 4511 at the rear of the tongue-and-groove block 551. The push-pull block return spring 466 is installed above the pull-pull block 464 to keep the tongue-and-groove block 4644 locked on the tongue-and-groove block 451.

[0050] The first embodiment of the present invention provides a technical solution in which the latch assembly 45 is disposed in the middle of the lock body 4 and the push-pull assembly 46 is disposed in the upper part of the lock body 4 (e.g., Figure 3 (As shown). In another embodiment, the latch assembly 45 is disposed on the upper part of the lock body 4, and the push-pull assembly 46 is disposed in the middle part of the lock body 4.

[0051] like Figure 6 As shown, the locking assembly 47 of the present invention includes a square tongue 471, a square tongue plate 472, a pusher 473, a sliding locking rod 474, a pusher return spring 475, and a locking rod return spring 476. The square tongue plate 472 is provided with a square tongue locking groove 4721, which cooperates with the pusher 473 to lock the square tongue 471. Specifically, the pusher 473 abuts against the sliding locking rod, and the pusher return spring 475 is disposed on one side of the pusher. The sliding locking rod 474 has a locking rod 4741 at the upper part and a locking rod block 4742 at the lower part. The locking rod return spring 476 is sleeved on the locking rod 4741. The pusher return spring 475 provides a reset force for the pusher 473. The locking rod block 4742 cooperates with the pusher 473 to make the locking rod 4741 rise or fall. When the locking rod 4741 rises, its upper end abuts against the locking protrusion 4522 in the middle of the sliding rack 452 to lock the oblique tongue 551.

[0052] During the use of this invention, when people open the door by pushing the handle 1, the lever 21 (or 31) on the handle 1 moves the push-slide sleeve 461 to slide to the left. The push-slide piece 4611 drives the push-pull piece 4631 to push the push-pull block 463 to rotate counterclockwise around the first rotating shaft 4632. The first transmission surface 4633 drives the second transmission surface 4643, driving the pull-pull block 464 to rotate clockwise around the second rotating shaft 4642. At this time, the oblique tongue block 4644 disengages from the protrusion 4511 on the oblique tongue 451 and no longer jams the oblique tongue 451. The oblique tongue 451 changes direction to realize the opening of the door.

[0053] When people open the door by pulling handle 1, the lever 21 (or 31) on handle 1 moves the sliding plate 4621, causing the sliding sleeve 462 to move to the right. The sliding sleeve 462 drives the pulling plate 4641 to drive the pulling block 464 to rotate clockwise around the second pivot 4642. At this time, the latch block 4644 disengages from the protrusion 4511 on the latch 451 and no longer jams the latch 451. The latch 451 changes direction to open the door.

[0054] This invention primarily utilizes a push-pull handle 1, which in turn activates a push-sliding sleeve 461 or a pull-sliding sleeve 462 via levers 21 (or 31) on the front seat 2 and rear seat 3. Specifically, external force acts on the handle 1, causing the handle 1 to drive the front lever 21 to actuate the push-sliding sleeve 461, which in turn drives the push-pull block 463. Conversely, the handle 1 drives the rear lever 31 to actuate the pull-sliding sleeve 462, which in turn drives the pull-pull block 464. This, in turn, causes the push-pull block 463 and the pull-pull block 464 to move, preventing the oblique latch block 4644 at one end of the pull-pull block 464 from locking the protrusion 4511 of the oblique latch 451. The oblique latch 451 then reverses direction, opening the door. The sliding lock lever 474 in the locking assembly 47 locks the lock body 4. The oblique latch assembly 45 of this invention employs a transmission method involving a sliding rack 452 and a pinion 453, achieving excellent quiet operation and smooth transmission. This invention provides an extremely convenient and quick push-pull door opening process, suitable for various occasions and a wide range of people. It is highly safe and will not experience quality problems even after long-term use, demonstrating stable performance.

[0055] The push-pull door lock structure according to the present invention has been described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various modifications can be made to the push-pull door lock structure proposed by the present invention without departing from the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the contents of the appended claims.

Claims

1. A push-pull door lock structure, comprising: The door panel includes a handle and front seat on one side, another handle and rear seat on the other side, and a lock body inside the door panel. The lock body includes a latch assembly, a push-pull assembly, and a locking assembly. The latch assembly includes a latch and a sliding rack. Both the front seat and the rear seat are provided with levers, each lever including a front lever and a rear lever. The front lever passes through the front seat, with one end connected to a handle located on one side of the door leaf and the other end movably connected to the push-pull assembly. The rear lever passes through the rear seat, with one end connected to a handle located on the other side of the door leaf and the other end movably connected to the push-pull assembly. Its characteristic is that... The push-pull assembly includes: a pull sleeve, a push sleeve embedded in the pull sleeve, a pull block, a push block, and a sleeve return spring; a push plate is provided at the rear end of the push sleeve, and a pull plate is provided at the rear end of the pull sleeve; a protruding push plate is provided at the upper end of the push block, a first rotating shaft is provided in the middle of the push block, and a first transmission surface is provided on the side of the push block; a protruding pull plate is provided at the upper end of the pull block, a second rotating shaft is provided in the middle of the pull block, a second transmission surface is provided on one side of the second rotating shaft, and a slanted latch block is provided on the other side of the second rotating shaft; the upper end of the push plate contacts the push plate, and the upper end of the pull plate contacts the pull sleeve; the first transmission surface contacts the second transmission surface, and the slanted latch block is engaged with the protrusion at the rear of the slanted latch; the locking assembly includes a sliding locking rod, wherein... An external force is applied to the handle, which drives the front lever to move the push-slide sleeve. The push-slide sleeve drives the push-pull block to move. The handle drives the rear lever to move the pull-slide sleeve. The pull-slide sleeve drives the pull-pull block to move, thereby driving the push-pull block and the pull-pull block to move. This causes the oblique tongue block at one end of the pull-pull block to no longer jam the protrusion of the oblique tongue, causing the oblique tongue to rotate in a different direction, thus opening the door. After the door is closed, the sliding latch is locked by the sliding locking rod contacting the sliding rack.

2. The push-pull door lock structure as described in claim 1, characterized in that, The lock body also includes a cover, within which a slot and a sliding groove are provided; wherein... The oblique tongue assembly further includes a fixing seat disposed within the slot, a pinion gear meshing with the sliding rack, and an oblique tongue return spring; wherein, The sliding rack is limited to move within the groove. A push rod is provided at one end of the sliding rack, a locking protrusion is provided in the middle of the sliding rack, and a rack is provided at the other end of the sliding rack. The oblique tongue return spring is disposed between the fixed base and the top rod, providing a return force for the oblique tongue to return; The push rod passes through the side wall of the fixed seat and abuts against the oblique tongue, and the rack meshes with the pinion.

3. The push-pull door lock structure as described in claim 2, characterized in that, The locking assembly includes: a latch that abuts against the sliding locking lever, a locking lever return spring, and a latch return spring disposed on one side of the latch; wherein, The sliding locking lever includes a locking lever at the upper end and a locking lever block at the lower end that abuts against the mortise, wherein; The locking rod return spring is sleeved on the locking rod, and the nut return spring provides a reset force for the nut.

4. The push-pull door lock structure as described in claim 3, characterized in that, Under the action of the locking lever and the locking pin, the locking lever rises or falls. When the locking lever rises, its upper end abuts against the locking protrusion to lock the tongue.

5. The push-pull door lock structure as described in claim 1, characterized in that, The push-pull assembly also includes a toggle return spring, wherein... The sliding sleeve return spring is disposed at the front end of the push sliding sleeve and the pull sliding sleeve, and the push sliding sleeve and the pull sliding sleeve are reset by the sliding sleeve return spring.

6. The push-pull door lock structure as described in claim 5, characterized in that, The push block return spring is installed above the pull block, and the oblique tongue locking block is secured to the oblique tongue by the push block return spring.

7. The push-pull door lock structure as described in claim 6, characterized in that, The lock body also includes an outer liner plate and a bottom assembly, with the first and second rotating shafts fixed to the bottom assembly.

Images