TWM492354U - Improved latch of door lock - Google Patents

Description

Door lock and its latch structure

This creation relates to a structural improvement of a door lock and its latch, and more particularly to a structural improvement of a door lock applied to a fire door and its latch.

The traditional door locks need to be provided with a door handle device for opening the latch on the door panel. However, since the door handle generally needs to protrude from the door panel surface, the overall visual appearance is affected. This kind of influence is particularly large in the field of fire doors, because the end of the fire door with the door panel is often located indoors, and the traditional fire door door handle is mostly a push rod across the door panel, which brings the beauty of the indoor landscape. Small destructive.

One of the purposes of this creation is to provide a door lock and a latch structure that are simple, reliable, and easy to open.

Another object of the present invention is to reduce the adverse effects of the appearance of the door lock structure on the visual beauty by improving the structure of the door handle, the latch, and the door handle and the interlock mechanism.

The present invention provides a door lock and a latch structure thereof, including a panel having a pressing member opening thereon, a pressing member having a pressing plate mounted in the pressing member opening, the pressing plate having a pressing surface, and at least one a push rod coupled to the opposite side of the pressing surface of the pressing plate; a transmission mechanism connecting the push rod; and a latch set having a lock seat and a bolt assembly connecting the transmission mechanism, wherein The lock seat has a through hole, and the bolt assembly is installed in the through hole and the lock seat.

The door lock and the latch structure thereof further comprise two side plates, the distance between them is slightly smaller than the width of the panel, and is fixed to the inner side of the panel and perpendicular to the panel, wherein the transmission mechanism is installed between the two side plates.

The door lock and the latch structure further include a first fixed shaft bridged between the two side plates.

The transmission mechanism includes a linkage assembly pivotally connected between the first fixed shaft and the at least one push rod, and a pulling assembly having a pulling member pivotally connected to the panel; the guiding member is connected to the pulling member and the latch group And the pulling and linking member respectively pivotally pull the pulling member and the linking component.

The at least one pusher includes a first pusher and a second pusher, and the first pusher and the second pusher each include two poles connected to the pressing plate, and one rotating shaft connecting the two poles.

The door lock and its latch structure further comprise a second fixed shaft bridged between the two side plates.

The linkage assembly includes a first linkage member, the two ends of which are respectively pivotally connected to the rotation shaft of the first push rod and the second fixed shaft; and the second linkage member, the two ends of which are respectively pivotally connected to the rotation shaft of the second push rod, and A fixed shaft.

One end of the first linking member adjacent to the second fixed shaft has a first parallel axis parallel to the second fixed shaft, and one end of the second linking member adjacent to the first fixed shaft has a second parallel axis parallel to the first fixed shaft The interlocking component further includes an interlocking baffle, and the two ends of the linked baffle are respectively pivotally connected to the two parallel shafts.

The second linkage further includes a third parallel shaft parallel to the first fixed shaft and opposite to the second parallel shaft on opposite sides of the first fixed shaft, wherein one end of the pull link is pivotally connected to the third parallel shaft on.

The linkage assembly further includes a torsion spring, sleeved on the first fixed shaft, and the torsion spring has a more The twist arm is mounted on the top of the second linkage.

The bolt assembly includes a lock tongue protruding from the lock seat; the lock tongue is connected to the lock tongue and installed in the lock seat; and the interlocking clip is pivotally mounted in the lock seat, The utility model has a swinging end and is fastened to the lock lever; and a pulling component is connected between the interlocking clip and the pulling component of the pulling assembly.

The pulling assembly comprises a push rod, coaxial with the interlocking clip, pivotally mounted in the lock seat, having a push arm and a pull arm; and the pull rod, one end of which is hooked at an approximately vertical angle The arm is pulled and the other end is connected to the pulling piece.

The front locking piece and the rear fixing piece are disposed on the locking tongue, and one end of the interlocking card is clamped between the front fixing piece and the rear fixing piece.

The locking tongue is further provided with a front spring between the locking tongue and the front clamping piece, and a rear spring is sleeved after the rear clamping piece.

The panel may further have a hand hole, and a first hole cover, which is installed in the hole of the hand plate.

Through the structural modification of the door lock and its latch, the traditional door handle structure protruding from the door panel is greatly improved, and the traditional door lock is particularly improved, especially in the field of fire doors.

10‧‧‧Door lock and its latch structure

1‧‧‧ panel

11‧‧‧Press opening

12‧‧‧Hand hole

2‧‧‧ body frame

21‧‧‧ side panels

22‧‧‧First fixed axis

23‧‧‧Second fixed shaft

24‧‧ ‧ partition

25‧‧‧Baffle

26‧‧‧Top

27‧‧‧Connection box

3‧‧‧Pressing parts

31‧‧‧ Press plate

32‧‧‧ Pressing surface

33‧‧‧Put

331‧‧‧First putt

3311, 3321‧‧‧ pole

3312, 3322‧‧‧ shaft

332‧‧‧Second putter

4‧‧‧Hand plate cover

41‧‧‧ Cover

42‧‧‧ pivoting feet

43‧‧‧Compressed spring

44‧‧‧ cover shaft

5‧‧‧Transmission mechanism

51‧‧‧ linkage components

511‧‧‧First linkage

5111‧‧‧first parallel axis

512‧‧‧Second linkage

5121‧‧‧second parallel axis

5122‧‧‧ third parallel axis

52‧‧‧ Pulling assembly

521‧‧‧ Pulling parts

522‧‧‧Intervention pieces

523‧‧‧ Pulling linkages

53‧‧‧ linkage baffle

54‧‧‧torsion spring

541‧‧‧Twisted arm

6‧‧‧Lock group

61‧‧‧Lock seat

62‧‧‧through hole

63‧‧‧Lock tongue assembly

631‧‧‧Lock tongue

632‧‧‧Lock tongue

633‧‧‧ linkage card

6331‧‧‧Swing end

6332‧‧‧ Pulling end

6333‧‧‧Axis

634‧‧‧Front card

635‧‧‧ rear card

636‧‧‧ front spring

637‧‧‧ rear spring

638‧‧‧卡环

64‧‧‧Traffic components

641‧‧‧Pushing rod

6411‧‧‧Turning arm

6412‧‧‧ Pull arm

642‧‧‧ lever

7‧‧‧Fixed frame

8‧‧‧ door frame

Figure 1 is a perspective view of one embodiment of the structure of the door lock and its latch.

Fig. 2 is a perspective view showing another perspective of the structure of the door lock and its latch shown in Fig. 1.

Fig. 3A is an exploded view of the door lock portion of the structure of the door lock and the latch shown in Fig. 1.

Fig. 3B is an exploded perspective view showing the interlocking mechanism of the structure of the door lock and the latch shown in Fig. 1.

Fig. 4 is an exploded view of the latch portion of the structure of the door lock and the latch shown in Fig. 1.

5A and 5B are perspective views showing the operation of the door lock and the structure of the latch shown in Fig. 1.

6A and 6B are schematic cross-sectional views showing the operation of the door lock structure shown in Fig. 1.

7A and 7B are schematic cross-sectional views showing the operation of the latch shown in Fig. 1.

Referring to FIGS. 1 and 2, the door lock and its latch structure 10 include a panel 1, a body frame 2, a pressing member 3, a hand plate cover 4, a transmission mechanism 5, a latch group 6, and a fixing frame 7. The panel 1, the main body frame 2 and the fixing frame 7 have corresponding fixing structures such as screw holes, so as to be fixed to each other by a fixing member such as a screw (not shown) or directly clamped to each other, and fixed to the door frame 8 . on. The latch set 6 is of a separate structure and is additionally locked to the door panel frame 8. Of course, the relationship between the latch set 6 and other components is not limited to those described herein. For example, the fixed frame 7 may be omitted and otherwise fixed to the door panel 8.

Referring to FIGS. 3A and 3B, the panel 1 has a pressing member opening 11 and a hand plate hole 12. A pressing plate 31 of a pressing member 3 that can be pressed is attached to the pressing member opening 11. The pressing plate 31 has a pressing surface 32 that conforms to the shape of the pressing member opening 11 and is flush with the surface (please refer to FIG. 1 at the same time); and a push rod 33 that is coupled to the opposite side of the pressing surface 32. The push rod 33 is coupled to the transmission mechanism 5. In detail, as shown in FIG. 3B, the push rod 33 includes a first push rod 331 and a second push rod 332, and the first push rod 331 and the second push rod 332 each include two poles connected to the pressing plate 31. 3311 and 3321, and a shaft 3312/3322 connecting the rod 331/3321.

Referring to FIG. 3A again, the main body frame 2 includes two side plates 21 which are slightly smaller than the width of the panel 1 and are fixed to the inner side of the panel 1 and perpendicular to the panel 1 , and the transmission mechanism 5 is installed between the two side plates 21 . . The main body frame 2 further includes a first fixed shaft 22 and a second fixed shaft 23, and a partition plate 24 and a partition plate 25, which are respectively bridged between the two side plates 21. The top end 26 of the body frame 2 has a closed structure, and the bottom end has an open structure for the transmission mechanism 5 to extend out. The main body frame 2 can be connected to the panel through a connecting frame 27 that is vertically connected to the side plate 21, or can be directly welded to the inner side of the panel 1.

As shown in FIG. 3A, the hand hole cover 4 is mounted in the hand hole 12, and has a cover 41, a pivoting leg 42, a compression spring 43, and a cover shaft 44, and provides a function of shielding the hand hole 12. The shape and size of the cover plate 41 are similar to those of the hand plate hole 12, and the surface thereof is aligned with the panel 1. One end of the pivoting leg 42 is connected to the back surface of the cover plate 41, and the other end is pivotally connected to the cover shaft 44 fixed between the two side plates 21 of the main body frame 2. The swinging end of the cover plate 41 with respect to the cover shaft 44 extends into the top end 26 of the body frame 2, and a compression spring 43 is fixed thereon, which is disposed between the vertically extending surface of the top end 26 and the cover plate 41. The retaining cover 41 is capped within the hand hole 12 and provides a resilient force after it is depressed.

Please refer to FIG. 3A and refer to FIG. 3B together. The transmission mechanism 5 includes a linkage assembly 51 pivotally connected between the first fixed shaft 22 and the push rod 33. The pull assembly 52 has a pull member 521. Connected to the panel 1; and the linking member 522 is connected between the pulling member 52 and the latch group 6; and the pulling link member 523 is pivotally connected to the pulling member 521 and the linking assembly 51, respectively.

In detail, the interlocking component 51 includes a first linking member 511, the two ends of which are respectively pivotally connected to the rotating shaft 3312 of the first push rod 331 and the second fixed shaft 23; and the second linking member 512, the two ends of which are respectively pivotally connected to The rotating shaft 3322 of the second push rod 332 and the first fixed shaft 22.

The first linkage 511 is adjacent to the second fixed shaft 23 and has a first parallel shaft 5111, parallel to the second fixed shaft 23, and the second connecting member 512 has a second parallel shaft 5121 near one end of the first fixed shaft 22, parallel to the first fixed shaft 22, and the interlocking assembly 51 further includes an interlocking baffle 53. The two ends of the interlocking baffle 53 are respectively pivotally connected to the two parallel shafts 5111 and 521.

The second linking member 512 further includes a third parallel shaft 5122 parallel to the first fixed shaft 22 and opposite to the second parallel shaft 23 and distributed on both sides of the first fixed shaft 22, wherein one end of the pulling linkage 523 is The pivoting is on the third parallel shaft 5122.

The linkage assembly 51 further includes a torsion spring 54 that is sleeved on the first fixed shaft 22, and the torsion spring 54 has a torsion arm 541 that is mounted on the second linkage 512.

As shown in FIG. 4, the latch set 6 has a lock base 61 and a bolt assembly 63 for connecting the transmission mechanism 5, wherein the lock base 61 has a through hole 62, and the bolt assembly 63 is mounted to the through hole 62 and the lock seat 61. within. The bolt assembly 63 includes a locking tongue 631 protruding from the through hole 61 outside the locking seat 61; the locking tongue 632 is connected to the locking tongue 631 and installed in the locking seat 61; and the locking member 633 is connected by the shaft center 6333. Mounted in the lock seat 61 in a pivotable manner, having a swinging end 6331, being fastened to the latching lever 632, and the pulling end 6332; and a pulling assembly 64 connected to the interlocking clip 633 and the pulling assembly 52 between the pieces 522.

The pulling assembly 64 includes a push rod 641, and a shaft 6333 is shared with the interlocking clip 633, and is pivotally mounted in the lock seat 61, and has a push arm 6411 and a pull arm 6412; and a pull rod 642 One end is hooked to the pulling arm 6412 at an approximately vertical angle, and the other end is connected to the pulling member 522.

A front fastening piece 634 and a rear fastening piece 635 are disposed on the locking tongue 632, and one end of the interlocking locking piece 633 is engaged between the front fastening piece 634 and the rear fastening piece 635. The latching lever 632 is further provided with a front spring 636 between the locking tongue 63 and the front clamping piece 634, and a rear spring is sleeved after the rear clamping piece 635 637, the end of the rear spring 637 is sleeved with a snap ring 638.

Please refer to Figures 5A through 7B for the installation and actuation of the door lock and its latch structure 10. When the panel 1 / body frame 2 and the latch group 6 are attached to the door panel frame 8, the direction in which the pressing faces 32 of the panel 1 and the pressing member 3 face is perpendicular to the moving direction of the locking tongue 631. When the pressing member 3 is as shown in FIG. 6B, the first push rod 331 and the second push rod 332 respectively push the first linking member 511 and the second linking member 512 to pivot, and the third parallel shaft is pivoted. The pull-up member 521 swings the pull-up member 521 upwards, and the pull-up member 522 and the pull rod 642 are lifted together, so that the interlocking clip 633 pivots to push the lock tongue backwards by the swing end 6331, and the lock tongue 631 is retracted to the lock tongue 631. Inside the lock seat 61. At this time, as shown in FIG. 6B, the user can push open the cover 41 and hook the finger into the hand hole 12, and then open the door panel (not shown) where the door frame 8 is located to open it. When the user closes the door panel and releases the hand, under the pulling of the front spring 636 and the pushing of the rear spring 637, the locking tongue 631 protrudes out of the through hole 62 again to achieve the purpose of latching, and the pressing member 3 and The hand cover 4 is also returned to the original position in response to the restoring force provided by the torsion spring 54 and the compression spring 43, respectively, so that the pressing member opening 11 and the hand plate hole 12 are restored to an aesthetically flat state again.

In summary, the door lock of the present invention and its latch structure provide an improved structure that can replace the traditional door lock handle protruding from the door panel, so that the surface of the door panel is completely flat when closed, especially in place of the traditional fire door unlocking. After the putter, it will greatly increase the overall aesthetics, which is an innovative technology with great industrial value.

The specific embodiments described above are intended to clarify the purpose, features and effects of the present invention. For those skilled in the art, it is possible to make partial changes and modifications to the specific embodiments based on the above description. Anyone who has left the spirit of this creation should be included in the scope of the patent application in this case.

10‧‧‧Door lock and its latch structure

1‧‧‧ panel

2‧‧‧ body frame

3‧‧‧Pressing parts

4‧‧‧Hand plate cover

511‧‧‧First linkage

512‧‧‧Second linkage

52‧‧‧ Pulling assembly

521‧‧‧ Pulling parts

522‧‧‧Intervention pieces

523‧‧‧ Pulling linkages

53‧‧‧ linkage baffle

54‧‧‧torsion spring

6‧‧‧Lock group

61‧‧‧Lock seat

62‧‧‧through hole

63‧‧‧Lock tongue assembly

631‧‧‧Lock tongue

633‧‧‧ linkage card

634‧‧‧Front card

635‧‧‧ rear card

637‧‧‧ rear spring

638‧‧‧卡环

64‧‧‧Traffic components

641‧‧‧Pushing rod

642‧‧‧ lever

8‧‧‧ door frame

Claims (16)

A door lock and a latch structure thereof, comprising a panel having a pressing member opening; a pressing member having a pressing plate mounted in the pressing member opening, the pressing plate having a pressing surface; At least one push rod coupled to the opposite side of the pressing surface of the pressing plate; a transmission mechanism connecting the push rod; and a latch set having a lock seat and a bolt assembly connecting the transmission mechanism, wherein the push rod assembly The lock seat has a through hole, and the bolt assembly is installed in the through hole and the lock seat. The door lock and the latch structure thereof according to claim 1, further comprising a body frame having two side plates fixed to the inner side of the panel and perpendicular to the panel, wherein the transmission mechanism is installed between the two side plates . The door lock and the latch structure thereof according to claim 2, further comprising a first fixed shaft bridged between the two side plates. The door lock and the latch structure thereof according to claim 3, wherein the transmission mechanism comprises: a linkage assembly pivotally connected between the first fixed shaft and the at least one push rod, and a pulling assembly having a pulling member is pivotally connected to the panel; a pulling member is connected between the pulling member and the latch group; and a pulling connecting member is respectively pivotally connected to the pulling member and the linking assembly. The door lock and the latch structure thereof according to claim 4, wherein the at least one push rod comprises a first push rod and a second push rod, and the first push rod and the second push rod each comprise a two pole connected to the pressing plate, and a rotating shaft connecting the two poles. The door lock and the latch structure thereof according to claim 5, further comprising a second fixing shaft bridged between the two side plates. The door lock and the latch structure thereof according to claim 6, wherein the linkage assembly comprises: a first linkage member, the two ends of which are respectively pivotally connected to the rotating shaft of the first push rod, and the second solid And a second linking member, the two ends of which are respectively pivotally connected to the rotating shaft of the second push rod and the first fixed shaft. The door lock and the latch structure thereof according to claim 7, wherein one end of the first linking member adjacent to the second fixed shaft has a first parallel axis parallel to the second fixed shaft, and the second linking member One end of the first fixed shaft has a second parallel shaft parallel to the first fixed shaft, and the linkage assembly further includes a linkage baffle, and the two ends of the linkage plate are respectively pivotally connected to the two parallel shafts . The door lock of claim 8 and the latch structure thereof, wherein the second linkage further includes a third parallel axis parallel to the first fixed axis and opposite to the second parallel axis. Two sides of the fixed shaft, wherein one end of the pull joint is pivotally connected to the third parallel shaft. The door lock and the latch structure thereof according to claim 8, wherein the linkage assembly further includes a torsion spring sleeved to the first fixed shaft, and the torsion spring has a twisting arm and is attached to the second Above the linkage. The door lock and the latch structure thereof according to claim 10, wherein the bolt assembly comprises: a locking tongue protruding from the through hole outside the locking seat; a latching lever connected to the locking tongue and mounted Inside the lock seat; a linkage card member pivotally mounted in the lock seat, having a swinging end secured to the latch lever; and a pull assembly coupled to the linkage card Between the piece and the pull piece of the pull frame assembly. The door lock and the latch structure thereof according to claim 11, wherein the pulling assembly comprises: a push rod coaxial with the interlocking card, pivotally mounted in the lock seat, a push arm and a pull arm; and a pull rod, one end of which is hooked to the pull arm at an approximately vertical angle, and the other end is connected to the pull piece. The door lock and the latch structure thereof according to claim 12, wherein the front tongue is provided with a front fastening And a rear fastening piece, and one end of the linkage card is clamped between the front fastening piece and the rear fastening piece. The door lock of claim 13 and the latch structure thereof, wherein the latching lever is further provided with a front spring between the locking tongue and the front clamping piece, and is sleeved after the rear clamping piece spring. The door lock of any one of claims 1 to 14 and the latch structure thereof, wherein the panel further has a hand plate hole. The door lock and the latch structure thereof according to claim 15, further comprising a hand plate hole cover installed in the hand plate hole.