A lock latch structure

Abstract

The utility model discloses a lock file lock tongue structure, including lock file and lock tongue, be equipped with inclined plane, gap, third face and fourth face on lock file, be equipped with first face, second face on lock tongue, the gap is ladder structure, and the gap of lock tongue and ladder structure corresponds, and the front end of lock tongue is straight face structure, and the rear end of lock tongue is equipped with a plurality of inclined planes. The utility model discloses lock file lock tongue structure can adapt to the door lock of two -way open hinged door system, solve the problem that lock tongue and lock file's cooperation gap is too big and leads to the larger swing under the door system closing state, and the cooperation gap is too small and easily leads to the problem that lock tongue fails to lock in time in the process of closing the door.

Description

Technical Field

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

[0002] The hinged door systems commonly used in rail vehicles typically have door locks that open in one direction, meaning the door leaf rotates to one side of the door panel via a hinge axis. Some hinged door systems are also bidirectional, allowing opening to both sides of the door panel.

[0003] For hinged doors that open in both directions, if the gap between the latch and the locking stop is too large, the door system will wobble significantly when closed; if the gap is too small, the latch may fail to lock in time during closing, causing the door to open to the opposite side of the closing process and fail to lock effectively.

[0004] Therefore, it is necessary to develop new locking bolt structures to overcome the above problems. Utility Model Content

[0005] Purpose of the utility model: To address the shortcomings and defects of the existing technology, this utility model provides a locking bolt and latch structure that can adapt to door locks in two-way openable hinged door systems; it solves the problems that excessive clearance between the latch and the locking bolt leads to excessive shaking of the door system when closed, and excessive clearance leads to the latch failing to lock in time during the closing process.

[0006] Technical solution: The present invention provides a locking bolt and locking tongue structure, characterized in that: it includes a locking bolt and a locking tongue, the locking bolt is provided with a bevel, a notch, a third surface and a fourth surface, and the locking tongue is provided with a first surface and a second surface; the notch is a stepped structure, the locking tongue corresponds to the notch of the stepped structure, the front end of the locking tongue is a straight surface structure, and the rear end of the locking tongue is provided with several bevels.

[0007] The locking blocks on both sides of the door leaf are provided with beveled surfaces.

[0008] The lock block is provided with a notch for locking the bolt, a third surface is provided near the surface of the notch, and a fourth surface is provided inside the notch.

[0009] The locking tongue has a first surface at the front end and a second surface at the rear end.

[0010] The latch and the external door lock spring are mentioned above.

[0011] The third surface corresponds to the first mating surface.

[0012] The fourth surface corresponds to the second mating surface.

[0013] The locking stop and locking tongue are located on the rail vehicle door system.

[0014] Beneficial Effects: Compared with existing technologies, this utility model has the following significant advantages: The locking bolt and latch structure of this utility model can adapt to door locks in two-way openable hinged door systems; it solves the problems of excessive clearance between the latch and locking bolt leading to excessive shaking of the door system when closed, and insufficient clearance leading to the latch failing to lock in time during closing. The locking bolt and latch structure of this utility model achieves impact locking in two-way openable hinged door systems, solving the problem of difficult locking during impact; the locking bolt uses double bevels on both sides to achieve latch retraction after impact, and the latch locks after entering the locking bolt notch; the front end of the latch and the front end of the locking bolt notch adopt a large-gap straight-face design to prevent the latch from going over the locking bolt; the rear part of the front end of the latch and the inside of the locking bolt adopt a beveled wedge or small-gap fit design to prevent the latch from shaking when locked. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram illustrating the impact prevention method during the locking process of this utility model.

[0017] Figure 3 This is a schematic diagram illustrating how the locking state of this utility model prevents the bolt from shaking.

[0018] Figure 4 This is a schematic diagram showing the interchange of the plane and inclined plane of the locking stop and locking tongue surface 5 and surface 6 of this utility model;

[0019] Figure 5 This is a schematic diagram showing the small gap fit of the locking bolt and locking tongue at different positions according to this utility model;

[0020] In the diagram, 1 is the lock stop; 2 is the lock tongue; 3 is the bevel; 4 is the first surface; 5 is the second surface; 6 is the third surface; 7 is the fourth surface; 8 is the door lock spring; 9 is the first mating surface; 10 is the second mating surface; and 11 is the notch. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] The locking bolt and locking tongue structure of this utility model includes a locking bolt 1 and a locking tongue 2. The locking bolt 1 is provided with a bevel 3, a notch 11, a third surface 6 and a fourth surface 7. The locking tongue 2 is provided with a first surface 4 and a second surface 5. The notch 11 is a stepped structure, and the locking tongue 2 corresponds to the notch 11 of the stepped structure. The front end of the locking tongue 2 is a straight surface structure, and the rear end of the locking tongue 2 is provided with several bevels.

[0023] The locking stop 1 of this utility model has beveled surfaces 3 on both sides of the door leaf. The locking stop 1 has a notch 11 for locking the latch, with a third surface 6 near the surface of the notch 11 and a fourth surface 7 inside. The latch 2 has a first surface 4 at its front end and a second surface 5 at its rear. The latch 2 is connected to an external door lock spring 8. The third surface 6 corresponds to a first mating surface 9. The fourth surface 7 corresponds to a second mating surface 10. The locking stop 1 and the latch 2 are located on a rail vehicle door system.

[0024] The locking bolt notch of this invention features a stepped design with a large opening and a small interior. The front end of the bolt is set as a straight surface, followed by multiple beveled surfaces. The maximum opening of the straight surface of the bolt's front end and the surface near the locking bolt is fitted with a large clearance, allowing the bolt more time to enter the locking bolt notch during closing. After the straight surface of the bolt enters the locking bolt notch, it contacts the notch, preventing the bolt from overshooting the locking bolt. At this point, under the push of the door lock spring, the bolt fully extends and enters the locking bolt. In the locked state, the beveled surface following the straight surface of the bolt engages with the small opening inside the locking bolt, preventing the bolt from wobbling within the locking bolt. The portions of the locking bolt on both sides of the door leaf are beveled, allowing the front end of the bolt to strike the beveled surface from either side of the door leaf. The beveled surface retracts the bolt until it extends and locks at the locking bolt notch.

[0025] During the closing process, the bolt 2 first strikes the inclined surface 3 of the locking stop 1, causing the bolt to retract and continue closing the door. When the bolt 2 reaches the locking stop notch, it enters the notch under the action of the door lock spring 8.

[0026] However, if the door closes quickly, the bolt 2 does not have enough time to fully enter the locking notch 11. At this time, the bolt 2 only enters a small part, and the first surface 4 of the bolt 2 contacts the third surface 6 of the locking stop 1, preventing the bolt 2 from crossing the locking notch 11.

[0027] After locking is completed, the second side 5 of the latch 2 engages with the third side 6 of the locking block 1 to prevent the latch 2 from wobbling within the locking block 1.

[0028] like Figure 1-3 During the locking process, the front end of the bolt 1 enters the locking notch 11, and the third surface 6 and the first surface 4 collide to prevent the bolt 1 from crossing the locking notch 11. In the locked state, the second surface 5 of the bolt and the third surface 6 of the locking block form a wedge-shaped engagement to prevent the bolt from shaking.

[0029] like Figure 4 The wedge surfaces of the second surface 5 and the third surface 6 of the locking block 1 can be interchanged, still forming a wedge surface fit.

[0030] like Figure 5The second surface 5 of the locking stop 1 and the third surface 6 of the locking tongue can be replaced by the first mating surface 9 or the second mating surface 10. This avoids the problem of the locking tongue shaking when locked.

Claims

1. A locking bolt structure, characterized in that: It includes a locking block (1) and a locking tongue (2). The locking block (1) is provided with a bevel (3), a notch (11), a third surface (6) and a fourth surface (7). The locking tongue (2) is provided with a first surface (4) and a second surface (5). The notch (11) is a stepped structure. The locking tongue (2) corresponds to the notch (11) of the stepped structure. The front end of the locking tongue (2) is a straight surface structure. The rear end of the locking tongue (2) is provided with several bevels.

2. The locking bolt structure according to claim 1, characterized in that: The locking blocks (1) are provided with bevels (3) on both sides of the door leaf.

3. The locking bolt structure according to claim 1, characterized in that: The lock (1) is provided with a notch (11) for locking the bolt, and a third surface (6) is provided near the surface of the notch (11), and a fourth surface (7) is provided inside.

4. The locking bolt structure according to claim 1, characterized in that: The locking tongue (2) has a first surface (4) at the front end and a second surface (5) at the rear end.

5. The locking bolt structure according to claim 1, characterized in that: The latch (2) and the external door lock spring (8).

6. The locking bolt structure according to claim 1, characterized in that: The third surface (6) corresponds to the first mating surface (9).

7. The locking bolt structure according to claim 1, characterized in that: The fourth surface (7) corresponds to the second mating surface (10).

8. The locking bolt structure according to claim 1, characterized in that: The locking stop (1) and locking tongue (2) are located on the rail vehicle door system.

Images