Lock cylinder of automobile door lock

Abstract

The utility model relates to an automobile door lock cylinder which comprises a lock shell, a lock cylinder body, a first torsion spring and a linkage plate, the lock cylinder body is arranged in the lock shell in a penetrating mode, the lower end of the lock cylinder body penetrates out of the lock shell to form a connecting column, the upper end of the lock cylinder body is fixedly connected with an inner end cover with a key hole formed in the center, and a connecting ring is formed at the upper end of the lock shell. An outer end cover is arranged on the connecting ring, a plurality of clamping plates extending inwards are formed at the lower end of the outer end cover, a plurality of through grooves allowing the clamping plates to pass through are formed in the circumferential side of the connecting ring, the outer end cover covers the connecting ring so that the clamping plates can penetrate through the through grooves, and the clamping plates abut against the lower surface of the connecting ring after rotating along with the outer end cover. The outer end cover abuts against the inner end cover, a clamping ring groove is formed in the connecting column, the linkage plate is arranged on the connecting column in a penetrating mode, and a clamping spring abutting against the lower surface of the linkage plate is clamped in the clamping ring groove. The lock cylinder of the automobile door lock is more convenient to assemble and beneficial to improving the production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to an automobile door lock cylinder. Background Art

[0002] The automobile door lock cylinder is an important component in the automobile door lock assembly. Its function is to drive the linkage plate to move by rotating the lock cylinder after inserting the key into the door lock cylinder, so as to cooperate with the linkage structure in the door lock assembly to realize the opening of the door lock. The existing automobile door lock cylinder is mainly assembled by a lock shell, a lock cylinder, a reset torsion spring and a linkage plate. There are problems that the above components are relatively troublesome to assemble during the assembly of the existing automobile door lock cylinder, which is not convenient for the assembly of the automobile door lock cylinder.

[0003] In view of the above problems, the utility model is improved. Summary of the Utility Model

[0004] The utility model provides an automobile door lock cylinder, which solves the above problems existing in the prior art during use.

[0005] The technical solution of the utility model is realized as follows:

[0006] An automobile door lock cylinder includes a lock shell, a lock cylinder, a first torsion spring and a linkage plate. The lock cylinder is arranged in the lock shell and a connecting column is formed at the lower end of the lock cylinder protruding out of the lock shell. An inner end cover with a key hole in the center is fixedly connected to the upper end of the lock cylinder. A connecting ring is formed at the upper end of the lock shell. An outer end cover is arranged on the connecting ring. A plurality of inwardly extending clamping plates are formed at the lower end of the outer end cover. A plurality of through grooves for the clamping plates to pass through are formed on the circumferential side of the connecting ring. The outer end cover covers the connecting ring so that the clamping plates pass through the through grooves. After the clamping plates rotate with the outer end cover, they abut against the lower surface of the connecting ring, so that the outer end cover abuts against the inner end cover. A clamping ring groove is formed on the connecting column. The linkage plate is arranged on the connecting column. A snap spring abutting against the lower surface of the linkage plate is clamped in the clamping ring groove.

[0007] Preferably, a limiting protrusion is formed on the upper surface of the clamping plate, and a limiting hole matching the limiting protrusion is formed on the lower surface of the connecting ring. The limiting protrusion is clamped into the limiting hole.

[0008] Preferably, a limiting step is formed on the inner wall of the lock shell, a limiting groove is formed on the limiting step, a step portion is formed at the upper end of the lock cylinder, a limiting portion is formed on the step portion, and the step portion is placed on the limiting step so that the limiting portion is located in the limiting groove.

[0009] Preferably, a plurality of elastic plates are formed on the circumferential side of the inner end cover. The lower end of the elastic plate is bent inward to form a clamping portion. A clamping groove matching the elastic plate is formed on the circumferential side of the limiting portion. A clamping protrusion is formed on the bottom of the clamping groove. The elastic plate is inserted into the clamping groove, so that the clamping portion straddles the clamping protrusion and is clamped on the lower end of the clamping protrusion.

[0010] Preferably, a first window is formed at the lower end of the lock housing. A second window aligned with the first window is formed at the lower end of the lock core. The first torsion spring is sleeved on the lower end of the lock housing, and both ends of the return torsion spring respectively pass through the first window and the second window and abut against two side walls of the first window and the second window.

[0011] Preferably, a first abutting portion is formed on the connecting column. A second abutting portion corresponding to the first abutting portion is formed on the linkage plate. The first abutting portion can abut against the second abutting portion as the lock core rotates.

[0012] Preferably, a baffle is arranged at the upper end of the lock core. A rotating shaft is formed at each end of the baffle. A rotating groove matching the rotating shaft and a torsion spring groove located on one side of the rotating groove are formed at the upper end of the lock core. The rotating shaft is placed in the rotating groove. A second torsion spring is arranged in the torsion spring groove. Both ends of the second torsion spring respectively abut against the bottom of the torsion spring groove and the lower surface of the baffle. The baffle abuts against the lower surface of the inner end cover under the action of the second torsion spring to close the keyhole.

[0013] In summary, the beneficial effect of the present invention is that the assembly of the lock core of the automotive door lock is more convenient, facilitating the assembly operation of the lock core of the automotive door lock, thereby improving the assembly efficiency and further improving the production efficiency of the automotive door lock. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is a schematic structural diagram of the present invention;

[0016] Figure 2 is an exploded schematic diagram of the present invention;

[0017] Figure 3 is a schematic cross-sectional diagram of the present invention;

[0018] Figure 4 is a schematic structural diagram of the lock housing in the present invention;

[0019] Figure 5 Schematic structural diagram of the lock core in the present utility model;

[0020] Figure 6 Schematic structural diagram of the outer end cover in the present utility model.

[0021] In the figure: 1, lock housing; 11, connecting ring; 12, through groove; 13, limiting step; 14, limiting groove; 15, first window; 16, limiting hole; 2, lock core; 21, connecting column; 211, first abutting portion; 22, clamping ring groove; 23, stepped portion; 24, limiting portion; 241, clamping groove; 242, clamping protrusion; 25, second window; 26, rotating groove; 27, torsion spring groove; 3, first torsion spring; 4, linkage plate; 41, second abutting portion; 5, inner end cover; 51, key hole; 52, elastic plate; 521, clamping portion; 6, outer end cover; 61, clamping plate; 62, limiting protrusion; 7, snap ring; 8, baffle; 81, rotating shaft; 9, second torsion spring. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying Figure 1-6 drawings. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0023] As shown in the figure, an automotive door lock core includes a lock housing 1, a lock core 2, a first torsion spring 3 and a linkage plate 4. The lock core 2 is inserted into the lock housing 1, and a connecting column 21 is formed at the lower end of the lock core 2 protruding from the lock housing 1. An inner end cover 5 with a key hole 51 formed in the center is fixedly connected to the upper end of the lock core 2. A connecting ring 11 is formed at the upper end of the lock housing 1. An outer end cover 6 is arranged on the connecting ring 11. A plurality of inwardly extending clamping plates 61 are formed at the lower end of the outer end cover 6. A plurality of through grooves 12 for the clamping plates 61 to pass through are formed on the circumferential side of the connecting ring 11. The outer end cover 6 covers the connecting ring 11 so that the clamping plates 61 pass through the through grooves 12. After the clamping plates 61 rotate with the outer end cover 6, they abut against the lower surface of the connecting ring 11, so that the outer end cover 6 abuts against the inner end cover 5. A limiting protrusion 62 is formed on the upper surface of the clamping plate 61. A limiting hole 16 matching the limiting protrusion 62 is formed on the lower surface of the connecting ring 11. The limiting protrusion 62 is snapped into the limiting hole 16. A clamping ring groove 22 is formed on the connecting column 21. The linkage plate 4 is inserted into the connecting column 21. A snap ring 7 abutting against the lower surface of the linkage plate 4 is clamped in the clamping ring groove 22.

[0024] Specifically, the structure of the lock core 2 penetrating through the lock shell 1: A limiting step 13 is formed on the inner wall of the lock shell 1, a limiting groove 14 is formed on the limiting step 13, a step portion 23 is formed at the upper end of the lock core 2, a limiting portion 24 is formed on the step portion 23, the step portion 23 is placed on the limiting step 13, and the limiting portion 24 is located in the limiting groove 14.

[0025] Specifically, the structure of the inner end cap 5 fixedly connected to the upper end of the lock core 2: A plurality of elastic plates 52 are formed on the circumferential side of the inner end cap 5, a clamping portion 521 is formed by bending the lower end of the elastic plate 52 inward, a clamping groove 241 matching the elastic plate 52 is formed on the circumferential side surface of the limiting portion 24, a clamping protrusion 242 is formed on the bottom of the clamping groove 241, the elastic plate 52 is inserted into the clamping groove 241, and the clamping portion 521 straddles the clamping protrusion 242 and is clamped on the lower end of the clamping protrusion 242.

[0026] Specifically, the structure of the first torsion spring 3 arranged between the lock shell 1 and the lock core 2: A first window 15 is formed at the lower end of the lock shell 1, a second window 25 aligned with the first window 15 is formed at the lower end of the lock core 2, the first torsion spring 3 is sleeved on the lower end of the lock shell 1, and the two ends of the return torsion spring respectively pass through the first window 15 and the second window 25 and abut against the two side walls of the first window 15 and the second window 25.

[0027] Specifically, the structure of the linkage plate 4 driving with the lock core 2: A first abutting portion 211 is formed on the connecting column 21, a second abutting portion 41 corresponding to the first abutting portion 211 is formed on the linkage plate 4, and the first abutting portion 211 can abut against the second abutting portion 41 as the lock core 2 rotates.

[0028] Specifically, in order to enhance the dust-proof performance inside the lock core 2, a baffle 8 is provided at the upper end of the lock core 2. A rotating shaft 81 is formed at each of the two ends of the baffle 8. A rotating groove 26 matching the rotating shaft 81 and a torsion spring groove 27 located on one side of the rotating groove 26 are formed at the upper end of the lock core 2. The rotating shaft 81 is placed in the rotating groove 26, a second torsion spring 9 is arranged in the torsion spring groove 27, the two ends of the second torsion spring 9 respectively abut against the bottom of the torsion spring groove 27 and the lower surface of the baffle 8, and the baffle 8 abuts against the lower surface of the inner end cap 5 under the action of the second torsion spring 9 to close the keyhole 51.

[0029] In the above embodiment, when assembling such an automotive door lock core: First, place the second torsion spring 9 in the torsion spring groove 27, with one end of the second torsion spring 9 abutting against the bottom of the torsion spring groove 27. Then, place the rotating shafts 81 at both ends of the baffle 8 into the rotating groove 26, so that the other end of the second torsion spring 9 abuts against the lower surface of the baffle 8. Next, cover the inner end cap 5 on the upper end of the lock core 2, insert the elastic plate 52 into the clamping groove 241, and make the clamping portion 521 straddle the clamping protrusion 242 and be clamped at the lower end of the clamping protrusion 242. Through the cooperation between the clamping portion 521 and the clamping protrusion 242, the inner end cap 5 is fixedly connected to the upper end of the lock core 2. Then, insert the lock core 2 into the lock housing 1, place the stepped portion 23 on the limiting step 13, and make the limiting portion 24 located in the limiting groove 14. The cooperation between the limiting step 13 and the stepped portion 23 provides a positioning function when the lock core 2 is inserted into the lock housing 1. Next, cover the outer end cap 6 on the connecting ring 11, make the clamping plate 61 pass through the through groove 12, rotate the outer end cap 6 so that the clamping plate 61 moves away from the position aligned with the through groove 12, and make the clamping plate 61 abut against the lower surface of the connecting ring 11, and make the limiting protrusion 62 snap into the limiting hole 16. Through the cooperation between the limiting protrusion 62 and the limiting hole 16, the rotation of the outer end cap 6 on the clamping ring is limited. By the abutment of the clamping plate 61 against the lower surface of the connecting ring 11, the outer end cap 6 is fixedly connected to the clamping ring and abuts against the inner end cap 5, so that the stepped portion 23 is stably held on the limiting step 13, and the lock core 2 is stably held in the lock housing 1. Then, pass the linkage plate 4 through the connecting column 21, make the first abutting portion 211 face the second abutting portion 41. Next, snap the snap ring 7 into the snap ring groove 22 so that the snap ring 7 abuts against the linkage plate 4. Under the action of the snap ring 7, the linkage plate 4 abuts against the lower end of the lock housing 1, and the linkage plate 4 is in transmission connection with the lock core 2. Thus, the assembly of such an automotive door lock core is completed. It can be seen that such an automotive door lock core does not require the use of customized tools during the assembly process, and the assembly operation is very convenient, which is conducive to improving the assembly efficiency and thus improving the production efficiency of the door lock core. When using such an automotive door lock core: Insert the key through the keyhole 51 to push the baffle 8 to swing along the rotating shaft 81 and insert it into the lock core 2. The swing of the baffle 8 deforms the second torsion spring 9. After rotating the lock core 2, the first abutting portion 211 abuts against the second abutting portion 41 to drive the linkage plate 4 to swing, and the linkage plate 4 drives the linkage structure in the automotive door lock assembly to open the automotive door lock. The cooperation between the linkage plate 4 and the linkage structure in the automotive door lock assembly is prior art and will not be elaborated here. During the rotation of the lock core 2, the limiting portion 24 rotates in the limiting groove 14. Through the cooperation between the limiting portion 24 and the limiting groove 14, the rotation of the lock core 2 is limited to ensure the stability of the lock core 2 during rotation. At the same time, the rotation of the lock core 2 will drive the first torsion spring 3 to deform. After pulling out the key, the first torsion spring 3 resets to drive the first lock core 2 to reset, and the second torsion spring 9 resets to drive the baffle 8 to reset, so that the baffle 8 abuts against the inner end cap 5 to close the keyhole 51, playing a dust-proof role for the inside of the lock core 2.

[0030] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A car door lock cylinder, comprising a lock housing (1), a lock cylinder (2), a first torsion spring (3) and a linkage plate (4), characterized in that: The lock core (2) is inserted into the lock housing (1) and the lower end of the lock core (2) passes through the lock housing (1) to form a connecting column (21). The upper end of the lock core (2) is fixedly connected to an inner end cover (5) with a key hole (51) in the center. The upper end of the lock housing (1) is formed with a connecting ring (11). The connecting ring (11) is provided with an outer end cover (6). The lower end of the outer end cover (6) is formed with a plurality of inwardly extending clamping plates (61). The peripheral side of the connecting ring (11) is provided with a plurality of clamping plates (61) for clamping. The outer end cover (6) is covered on the connecting ring (11) so that the clamping plate (61) passes through the through slot (12). The clamping plate (61) rotates with the outer end cover (6) and abuts against the lower surface of the connecting ring (11), so that the outer end cover (6) abuts against the inner end cover (5). The connecting column (21) is provided with a clamping ring groove (22). The linkage plate (4) is passed through the connecting column (21). A clamping spring (7) abutting against the lower surface of the linkage plate (4) is clamped in the clamping ring groove (22).

2. The automobile door lock cylinder according to claim 1, characterized in that: A limiting protrusion (62) is formed on the upper surface of the clamping plate (61), and a limiting hole (16) matching the limiting protrusion (62) is formed on the lower surface of the connecting ring (11), and the limiting protrusion (62) is clamped into the limiting hole (16).

3. The automobile door lock cylinder according to claim 2, characterized in that: A limiting step (13) is formed on the inner wall of the lock housing (1), a limiting groove (14) is formed on the limiting step (13), a step portion (23) is formed on the upper end of the lock core (2), a limiting portion (24) is formed on the step portion (23), and the step portion (23) is placed on the limiting step (13) so that the limiting portion (24) is located in the limiting groove (14).

4. The automobile door lock cylinder according to claim 3, characterized in that: A plurality of elastic plates (52) are formed on the peripheral side of the inner end cover (5); the lower ends of the elastic plates (52) are bent inward to form a clamping portion (521); a clamping groove (241) matching the elastic plate (52) is formed on the peripheral side of the limiting portion (24); a clamping protrusion (242) is formed on the bottom of the clamping groove (241); the elastic plate (52) is inserted into the clamping groove (241) so that the clamping portion (521) crosses over the clamping protrusion (242) and is clamped on the lower end of the clamping protrusion (242).

5. The automobile door lock cylinder according to claim 4, characterized in that: A first window (15) is formed at the lower end of the lock housing (1), a second window (25) aligned with the first window (15) is formed at the lower end of the lock core (2), the first torsion spring (3) is sleeved on the lower end of the lock housing (1), and two ends of the return torsion spring respectively pass through the first window (15) and the second window (25) and respectively abut against two side walls of the first window (15) and the second window (25).

6. The automobile door lock cylinder according to claim 5, characterized in that: A first abutment portion (211) is formed on the connecting column (21), and a second abutment portion (41) corresponding to the first abutment portion (211) is formed on the linkage plate (4), wherein the first abutment portion (211) can abut against the second abutment portion (41) as the lock core (2) rotates.

7. The automobile door lock cylinder according to claim 6, characterized in that: A baffle (8) is provided at the upper end of the lock core (2), and a rotating shaft (81) is formed at each end of the baffle (8). A rotation groove (26) matching the rotating shaft (81) and a torsion spring groove (27) located on one side of the rotation groove (26) are formed at the upper end of the lock core (2). The rotating shaft (81) is placed in the rotation groove (26), and a second torsion spring (9) is provided in the torsion spring groove (27). Two ends of the second torsion spring (9) respectively abut against the bottom of the torsion spring groove (27) and the lower surface of the baffle (8). Under the action of the second torsion spring (9), the baffle (8) abuts against the lower surface of the inner end cover (5) to close the key hole (51).

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