Anti-falling lock tongue structure

Abstract

The utility model discloses a kind of anti-falling lock tongue structures, including lock tongue head, fixed plate, lock tongue head has riveting hole, fixed plate has riveting end, the side wall of riveting end is interference fit with riveting hole, the side wall of riveting end is provided with riveting boss, and riveting boss is inclined to set and form with the end face between riveting end Angle. Riveting end is inserted into the riveting hole of lock tongue head, after riveting is completed, the side wall of riveting end, riveting boss will form riveting point with lock tongue head, and because riveting boss and the side wall of riveting end have angle in circumference, so that fixed plate has multiple riveting points with lock tongue head in circumference, lock tongue head is not prone to the condition of separation. Compared with prior art, the utility model does not need the cooperation of fastening sheet, and can also achieve the effect of multi-directional riveting fixation, while realizing anti-falling, material is saved.

Description

Technical Field

[0001] This utility model relates to the technical field of door lock products, and in particular, to a lock tongue structure that prevents it from falling off. Background Technology

[0002] The bolt is the core component of a lock, directly responsible for locking and unlocking, and its extension and retraction enable the door to open and close. Common types include beveled bolts (with springs, easily opened by cards), square bolts (without springs, strong anti-theft performance), and special structures such as cylindrical bolts, hook bolts, and pincer bolts. Materials are mostly stainless steel or zinc alloy, with stainless steel offering high strength and excellent resistance to deformation, meeting national standards (A-class locks have an axial load ≥3000N). Modern smart locks enhance their anti-theft performance through designs such as reverse bolts, anti-picking bolts, and multi-bolt linkages; for example, a three-bolt structure can effectively resist forced entry.

[0003] Currently, Chinese patent CN112252844B discloses an enhanced anti-detachment lock tongue structure, including a lock tongue fixing plate, a lock tongue fastening plate, and a lock tongue itself. The lock tongue fastening plate has a C-shaped structure, which achieves closure of the two legs by engaging with a circular hole on the fixing plate. Subsequently, the lock tongue fastening plate is inserted into the riveting hole of the lock tongue to complete the riveting, thus achieving the interlocking of the three components. However, the addition of the lock tongue fastening plate increases the amount of material required, leading to higher production costs. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a lock tongue structure that prevents it from falling off.

[0005] The objective of this utility model is achieved through the following technical solution: A lock tongue structure for preventing detachment includes a lock tongue and a fixing plate. The lock tongue has a rivet hole, and the fixing plate has a rivet end. The side wall of the rivet end is interference-fitted with the rivet hole. A rivet protrusion is provided on the side wall of the rivet end, and the rivet protrusion is inclined and forms an angle with the end face of the rivet end.

[0006] Preferably, the riveting protrusions are provided on both sides of the riveting end.

[0007] Preferably, the insertion surface of the riveting end is provided with a chamfer.

[0008] Preferably, the two included angles of the riveted ends are different.

[0009] Preferably, the two included angles at the riveted ends are the same.

[0010] Preferably, the two included angles at the riveted ends are formed as opposite angles.

[0011] Preferably, the riveting protrusion is formed by stamping on the riveting end.

[0012] Preferably, at least two riveting ends are arranged side by side on the fixing plate.

[0013] Preferably, the fixing plate is provided with a waist-shaped connecting hole.

[0014] Preferably, the riveting protrusion is formed in the middle of the sidewall of the riveting end.

[0015] The beneficial effects of this invention are as follows: After inserting the riveting end into the riveting hole of the lock tongue and completing the riveting, the side wall of the riveting end and the riveting protrusion will form riveting points with the lock tongue. Furthermore, because the riveting protrusion and the side wall of the riveting end have an angle in the circumferential direction, the fixing plate has multiple riveting points with the lock tongue in the circumferential direction, making it less likely for the lock tongue to detach. Compared with existing technologies, this invention does not require the use of fastening plates to achieve the same multi-directional riveting and fixing effect, saving materials while preventing detachment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment; Figure 2 This is a top view of the fixed plate.

[0017] Reference numerals: 1. Locking tongue; 2. Fixing plate; 3. Riveting end; 4. Riveting protrusion; 5. Chamfer; 6. Waist-shaped connecting hole. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] like Figure 1 , Figure 2 As shown, an anti-loosening latch structure includes a latch 1 and a fixing plate 2 that are riveted together. The latch 1 is essentially cylindrical, thus its central cavity forms a riveting hole for riveting the fixing plate 2. The fixing plate 2 specifically includes a riveting end 3, the width of which is greater than the diameter of the riveting hole. After the riveting end 3 is inserted into the riveting hole and riveting is completed, the two side walls of the riveting end 3 will have an interference fit with the inner wall of the latch 1 to achieve the riveting effect.

[0020] Preferably, a riveting protrusion 4 is also provided on the side wall of the riveting end 3, and the riveting protrusion 4 is inclined, so that an angle is formed between the riveting protrusion 4 and the end face of the riveting end 3. It can be understood that, viewed from the circumferential direction, the riveting protrusion 4 and the side wall of the riveting end 3 will be in different positions in the circumferential direction. After riveting is completed, a riveting point will also be formed between the riveting protrusion 4 and the inner wall of the locking tongue 1, so that the riveting end 3 has multiple riveting points with the locking tongue 1 in the circumferential direction, and the locking tongue 1 is not easy to detach.

[0021] In specific examples, rivet protrusions 4 are provided on both sides of the riveting end 3, thereby providing more rivet points in various directions to improve the strength and stability of the latch structure. In some examples, the two included angles of the riveting end 3 may be different, but more preferably, the two included angles may have the same angle, especially the two included angles may be constructed as opposite angles. In this case, the two rivet protrusions 4 can provide two rivet points that are opposite each other in the X direction and corresponding in the Y direction, thereby further improving the connection strength and stability of the latch structure.

[0022] For example, the insertion surface of the rivet end 3 into the lock tongue 1 can also be constructed with a chamfer 5. The chamfer 5 can guide the insertion of the rivet end 3 into the lock tongue 1, so that it is not easy to get stuck or have an unsmooth insertion.

[0023] In some configurations, the latch structure is adapted to have multiple latches 1, while the fixing plate 2 has multiple riveting ends 3 arranged side by side. That is, the fixing plate 2 integrates multiple riveting ends 3, and the fixing plate 2 also has a through-hole 6 for connecting with the internal mechanism of the lock body. Of course, the fixing plate 2 can also adopt a configuration similar to that disclosed in Chinese Patent No. CN112252844B, in which the fixing plate 2 is elongated and its end has only one riveting end 3.

[0024] Furthermore, the riveting protrusion 4 is preferably adapted to be formed in the middle of the side wall of the riveting end 3. Viewed from the insertion direction of the riveting end 3, the side wall of the riveting end 3 is divided into three riveting parts by the riveting protrusion 4, thereby further improving the riveting strength.

[0025] The riveting protrusion 4 can be formed on the riveting end 3 by stamping. From a process perspective, the riveting end 3 is a sheet material, while the riveting protrusion 4 is part of the material of the riveting end 3 itself, without causing an increase in additional material, thus making the production cost lower.

[0026] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A lock tongue structure for preventing detachment, comprising a lock tongue (1) and a fixing plate (2), wherein the lock tongue (1) has a riveting hole, the fixing plate (2) has a riveting end (3), and the sidewall of the riveting end (3) is interference-fitted with the riveting hole, characterized in that: The riveting end (3) is provided with a riveting protrusion (4) on its side wall, and the riveting protrusion (4) is inclined and forms an angle with the end face of the riveting end (3).

2. The anti-dislodgement locking tongue structure according to claim 1, characterized in that: The riveting protrusions (4) are provided on both sides of the riveting end (3).

3. The anti-dislodgement locking tongue structure according to claim 1, characterized in that: The insertion surface of the riveting end (3) is provided with a chamfer (5).

4. The anti-dislodgement locking tongue structure according to claim 2, characterized in that: The two included angles of the riveted end (3) are different.

5. The anti-dislodgement locking tongue structure according to claim 2, characterized in that: The two included angles of the riveted end (3) are the same.

6. The anti-dislodgement locking tongue structure according to claim 5, characterized in that: The two included angles of the riveted end (3) are formed as opposite angles.

7. The anti-disengagement locking tongue structure according to any one of claims 1-6, characterized in that: The riveting protrusion (4) is formed by stamping on the riveting end (3).

8. The anti-disengagement locking tongue structure according to any one of claims 1-6, characterized in that: At least two riveting ends (3) are arranged side by side on the fixing plate (2).

9. The anti-dislodgement locking tongue structure according to claim 8, characterized in that: A waist-shaped connecting hole (6) is provided through the fixing plate (2).

10. The anti-dislodgement locking tongue structure according to claim 7, characterized in that: The riveting protrusion (4) is formed in the middle of the side wall of the riveting end (3).

Images