A simple lock body

Abstract

The utility model discloses a simple lock body, including an upper lock shell and a lower lock shell, a main tongue assembly and an oblique tongue assembly are arranged between the upper lock shell and the lower lock shell, and a square rod linkage device is arranged between the main tongue assembly and the oblique tongue assembly; the square rod linkage device includes a first linkage piece and a second linkage piece, and the first linkage piece is provided with a first tooth; the main tongue assembly includes a main tongue and a driving rod, the main tongue is provided with a main tongue notch and a main tongue gap, the middle end of the driving rod is installed in the main tongue notch through a rotating shaft and rotates around the rotating shaft, and the head end is provided with a second tooth matching the first tooth; the tail end is provided with a lower extension block which is in the main tongue gap and can drive the main tongue to move up and down during the rotation process. The utility model arranges a square rod linkage device inside the lock body, and the square rod linkage device synchronously links the main tongue assembly and the oblique tongue assembly, the square rod linkage device only needs 2 parts, and the main tongue assembly only needs 1 driving rod except the main tongue, so the parts are few and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of lock bodies, in particular to a simple lock body. Background Art

[0002] Door locks, as the name implies, are devices used to lock doors to prevent others from opening the door. Door locks are widely used and of various types, and the requirements for door locks are different in different occasions. The internal structure of the existing door lock body is relatively complex, and its production cost is relatively high. Since the components of the lock are easily worn and damaged after long-term use, the lock with a complex structure is difficult to repair after being damaged, which reduces the service life of the lock. In the locking process of the existing locking mechanism, the thumb wheel directly applies force to the main lock tongue assembly, and the main lock tongue assembly transmits force to the brake member during the movement, which is a point-to-point transmission. Therefore, the thumb wheel needs to instantly overcome a sufficiently large braking force during the force application process, resulting in large resistance to opening and closing the lock, laborious opening and closing, and easy damage to the thumb wheel, which affects the user experience and service life of the lock body. For this reason, a simple lock body is proposed. Utility Model Content

[0003] The purpose of the utility model is to provide a simple lock body, in which a square rod linkage device is arranged inside the lock body, and the main tongue assembly and the inclined tongue assembly are synchronously linked by the square rod linkage device, which has a simple structure, few parts and low cost, so as to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A simple lock body comprises an upper lock shell and a lower lock shell, characterized in that a main tongue assembly and an oblique tongue assembly are arranged between the upper lock shell and the lower lock shell, and a square rod linkage device is arranged between the main tongue assembly and the oblique tongue assembly; a handle is inserted into the hollow of the square rod linkage device, and the handle rotates under the action of manpower, thereby driving the first linkage piece and the second linkage piece to rotate.

[0006] The square rod linkage device comprises a first linkage piece and a second linkage piece which are coaxially connected and arranged in sequence from top to bottom, wherein the first linkage piece is provided with a first tooth;

[0007] The main tongue assembly includes a main tongue and a driving rod, wherein the main tongue is provided with a main tongue notch and a main tongue gap, the middle end of the driving rod is installed in the main tongue notch through a rotating shaft and rotates around the rotating shaft, the head end is provided with a second tooth matching the first tooth; the tail end is provided with a lower extension block which is in the main tongue gap and can drive the main tongue to move up and down during the rotation process. When the lower extension block rotates, it can drive the main tongue to move together.

[0008] One side of the upper lock shell and the lower lock shell is provided with a lock body panel for the main tongue and the oblique tongue to extend out.

[0009] The second linkage piece is rotatably connected to a latch bolt paddle, and the latch bolt assembly includes a latch bolt, a latch bolt rod connected to the latch bolt, a latch bolt bracket mounted on the latch bolt rod, and a latch bolt positioning piece; the latch bolt paddle is mounted between the latch bolt bracket and the latch bolt positioning piece, and a spring is disposed on the latch bolt rod outer sleeve.

[0010] The lower lock shell is provided with a positioning column, and the tail end of the driving rod is also provided with a limiting column that penetrates the driving rod, and a torsion spring is connected between the limiting column and the positioning column. The function of the torsion spring is to pull back the driving rod to return it to its original position. The limiting column penetrates the driving rod to prevent it from deflecting and overturning.

[0011] The main tongue notch is elliptical, and the rotating shaft is installed in the main tongue notch and limits the main tongue to move only up and down.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] According to the structure of the utility model, when the square rod linkage device rotates counterclockwise under the action of manpower, the first linkage plate and the second linkage plate rotate counterclockwise synchronously, the first tooth of the first linkage plate rotates counterclockwise, and the second tooth rotates clockwise, and the lower extension block of the driving rod pushes the main tongue to move upward. The whole structure is synchronously linked to the main tongue assembly and the oblique tongue assembly through the square rod linkage device, and has a simple structure and smooth linkage. Compared with the structures on the market, it has fewer parts, a simpler structure and a lower production cost while being able to achieve the same function. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a simple lock body of the utility model (1);

[0015] Figure 2 This is a structural schematic diagram of a simple lock body of the utility model (2);

[0016] Figure 3 This is a structural schematic diagram (3) of a simple lock body of the utility model.

[0017] In the figure: 1. lock body panel; 2. upper lock shell; 3. lower lock shell; 4. oblique tongue; 5. oblique tongue rod; 6. spring; 7. oblique tongue bracket; 8. oblique tongue positioning plate; 9. oblique tongue paddle; 10. first linkage plate; 11. main tongue notch; 12. drive rod; 13. torsion spring; 14. positioning column; 15. main tongue; 16. main tongue notch; 17. first tooth; 18. second linkage plate; 19. second tooth; 20. limit column; 21. lower extension block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Reference Figure 1 , Figure 2 and Figure 3 A simple lock body, comprising an upper lock shell 2 and a lower lock shell 3, characterized in that: a main tongue 15 component and an oblique tongue 4 component are arranged between the upper lock shell 2 and the lower lock shell 3, and a square rod linkage device is arranged between the main tongue 15 component and the oblique tongue 4 component; a handle is inserted into the square rod linkage device, and the handle rotates under human power, thereby driving the first linkage piece 10 and the second linkage piece 18 to rotate. A lock body panel 1 is arranged on one side of the upper lock shell 2 and the lower lock shell 3 for the main tongue 15 and the oblique tongue 4 to extend out.

[0020] The square rod linkage device comprises a first linkage piece 10 and a second linkage piece 18 which are coaxially connected and arranged in sequence from top to bottom, wherein the first linkage piece 10 is provided with a first tooth 17;

[0021] The main tongue assembly includes a main tongue 15 and a driving rod 12. The main tongue 15 is provided with a main tongue notch 11 and a main tongue gap 16. The middle end of the driving rod 12 is installed in the main tongue notch 11 through a rotating shaft and rotates around the rotating shaft. The head end is provided with a second tooth 19 matching the first tooth 17. The tail end is provided with a lower extension block 21 which is in the main tongue gap 16 and can drive the main tongue 15 to move up and down during the rotation process. When the lower extension block 21 rotates, it can drive the main tongue 15 to move together.

[0022] The second linkage piece 18 is rotatably connected to a latch bolt paddle 9, and the latch bolt 4 assembly includes a latch bolt 4, a latch bolt rod 5 connected to the latch bolt 4, a latch bolt bracket 7 mounted on the latch bolt rod 5, and a latch bolt positioning piece 8; the latch bolt paddle 9 is mounted between the latch bolt bracket 7 and the latch bolt positioning piece 8, and a spring 6 is provided on the outer sleeve of the latch bolt rod 5.

[0023] The lower lock housing 3 is provided with a positioning column 14, and the tail end of the driving rod 12 is also provided with a limiting column 20 that penetrates the driving rod 12, and a torsion spring 13 is connected between the limiting column 20 and the positioning column 14. The function of the torsion spring 13 is to pull back the driving rod 12 to return it to its original position. The limiting column 20 penetrates the driving rod 12 to prevent it from deflecting and overturning. The main tongue notch 11 is elliptical, and the rotating shaft is installed in the main tongue notch 11 and limits the main tongue 15 to move only up and down.

[0024] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A simple lock body, comprising an upper lock shell and a lower lock shell, characterized in that: A main tongue assembly and an oblique tongue assembly are provided between the upper lock housing and the lower lock housing, and a square rod linkage device is provided between the main tongue assembly and the oblique tongue assembly; The square rod linkage device comprises a first linkage piece and a second linkage piece which are coaxially connected and arranged in sequence from top to bottom, wherein the first linkage piece is provided with a first tooth; The main tongue assembly includes a main tongue and a driving rod. The main tongue is provided with a main tongue groove and a main tongue gap. The middle end of the driving rod is installed in the main tongue groove through a rotating shaft and rotates around the rotating shaft. The head end is provided with a second tooth matching the first tooth; the tail end is provided with a lower extension block which is located in the main tongue gap and can drive the main tongue to move up and down during rotation.

2. A simple lock body according to claim 1, characterized in that: One side of the upper lock shell and the lower lock shell is provided with a lock body panel for the main tongue and the oblique tongue to extend out.

3. A simple lock body according to claim 1 or 2, characterized in that: The second linkage piece is rotatably connected to a latch bolt paddle, and the latch bolt assembly includes a latch bolt, a latch bolt rod connected to the latch bolt, a latch bolt bracket mounted on the latch bolt rod, and a latch bolt positioning piece; the latch bolt paddle is mounted between the latch bolt bracket and the latch bolt positioning piece, and a spring is disposed on the latch bolt rod outer sleeve.

4. A simple lock body according to claim 1, characterized in that: The lower lock shell is provided with a positioning column, and the tail end of the driving rod is also provided with a limiting column that penetrates the driving rod, and a torsion spring is connected between the limiting column and the positioning column.

5. A simple lock body according to claim 1, characterized in that: The main tongue notch is oval.

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