阅读说明：本技术 一种车门锁塑料锁套 (Plastic lock sleeve of vehicle door lock ) 是由 王克华 路阳 张啸萍 于 2019-10-25 设计创作，主要内容包括：本发明公开了一种车门锁塑料锁套。本发明包括中空的外塑料锁套,外塑料锁套的内部设有内锁套,外塑料锁套的套壁外侧上设有自攻螺套。综上所述：本方案采用一种生产速度较快,轻度可靠的自攻螺套结构的塑料锁套替代锌合金锁套,提高了产品强度,加快了产品生产速度,便于制造和节约成本,还能减少电镀对环境的污染。(The invention discloses a plastic lock sleeve of a vehicle door lock. The invention comprises a hollow outer plastic lock sleeve, an inner lock sleeve is arranged inside the outer plastic lock sleeve, and a self-tapping screw sleeve is arranged on the outer side of the sleeve wall of the outer plastic lock sleeve. In summary, the following steps: the scheme adopts the plastic lock sleeve with the self-tapping screw sleeve structure which has the advantages of higher production speed and light reliability to replace a zinc alloy lock sleeve, improves the product strength, accelerates the production speed of products, is convenient to manufacture and saves the cost, and can also reduce the pollution of electroplating to the environment.)

1. A kind of car door lock plastic lock sleeve, characterized by: the lock comprises a hollow outer plastic lock sleeve (1), an inner lock sleeve (2) is arranged inside the outer plastic lock sleeve (1), and a self-tapping thread sleeve (3) is arranged on the outer side of the sleeve wall of the outer plastic lock sleeve (1).

2. The vehicle door lock plastic lock casing as defined in claim 1, wherein: and self-tapping thread sleeve mounting holes (4) are formed in the sleeve wall of the outer plastic lock sleeve (1) from outside to inside.

3. The vehicle door lock plastic lock casing as defined in claim 1, wherein: and a positioning head (5) is arranged on the outer plastic lock sleeve (1).

4. The vehicle door lock plastic lock sleeve as defined in claim 3, wherein: and a vehicle door avoiding notch (6) is arranged beside the positioning head (5) on the outer plastic lock sleeve (1).

5. The vehicle door lock plastic lock casing as defined in claim 1, wherein: one end of the outer plastic lock sleeve (1) is provided with a lock cylinder mounting groove (7), an inner lock sleeve mounting groove (8) is arranged beside the lock cylinder mounting groove (7), and a sliding block drive plate mounting groove (9) is arranged beside the inner lock sleeve mounting groove (8).

6. The vehicle door lock plastic lock casing as claimed in claim 5, wherein: and water leakage holes (10) are formed in the groove wall of the inner lock sleeve mounting groove (8).

7. The vehicle door lock plastic lock casing as claimed in claim 5, wherein: and an idle running slope (11) is arranged on the groove wall of the inner lock sleeve mounting groove (8) in the direction of the slider driving plate mounting groove (9).

8. The vehicle door lock plastic lock casing as claimed in claim 5, wherein: and a torsion spring avoiding notch (12) is arranged at the end part of the groove wall of the sliding block driving plate mounting groove (9).

9. The vehicle door lock plastic lock casing as claimed in claim 5, wherein: and a boss (13) is arranged at the other end of the outer plastic lock sleeve (1) provided with the lock cylinder mounting groove (7).

10. The vehicle door lock plastic lock casing as defined in claim 1, wherein: two head end openings of the self-tapping thread insert (2) are horn-shaped, and a self-tapping notch (14) is formed in one end portion of the self-tapping thread insert.

Technical Field

The invention relates to the field of lock components, in particular to a plastic lock sleeve of a vehicle door lock.

Background

The lock sleeve of the existing common lock cylinder assembly generally adopts a die-casting zinc alloy material, and the adopted zinc alloy material has the following defects:

1. generally, metal materials are more important than plastic materials, and the product has heavy mass and cannot realize light weight;

2. the zinc alloy needs to be subjected to surface protection through electroplating, otherwise, the zinc alloy can rust to cause the functional failure of the product, and the environment can be polluted in the electroplating production process;

3. the zinc alloy has complex production process, high manufacturing energy consumption and high manufacturing cost.

In summary, the following steps: the existing common lock core has the defects of heavy mass, environmental pollution caused by the production process, complex production process and high production cost.

Disclosure of Invention

The invention aims to provide a plastic lock sleeve of a vehicle door lock. The invention has the advantages of light weight, simple production process and low production cost, and can reduce the pollution of the production process to the environment.

The technical scheme of the invention is as follows: a kind of car door lock plastic lock sleeve, characterized by: the self-tapping lock comprises a hollow outer plastic lock sleeve, an inner lock sleeve is arranged inside the outer plastic lock sleeve, and a self-tapping screw sleeve is arranged on the outer side of the sleeve wall of the outer plastic lock sleeve.

In the plastic lock sleeve of the vehicle door lock, a self-tapping screw sleeve mounting hole is formed in the sleeve wall of the outer plastic lock sleeve from outside to inside.

In the plastic lock sleeve of the vehicle door lock, the outer plastic lock sleeve is provided with a positioning head.

In the plastic lock sleeve of the vehicle door lock, a vehicle door avoiding notch is formed beside the positioning head on the outer plastic lock sleeve.

In the plastic lock sleeve of the vehicle door lock, one end of the outer plastic lock sleeve is provided with a lock cylinder mounting groove, an inner lock sleeve mounting groove is arranged beside the lock cylinder mounting groove, and a sliding block drive plate mounting groove is arranged beside the inner lock sleeve mounting groove.

In the plastic lock sleeve of the vehicle door lock, the groove wall of the inner lock sleeve mounting groove is provided with water leakage holes.

In the plastic lock sleeve of the vehicle door lock, an idle running slope is arranged on the groove wall of the inner lock sleeve mounting groove in the direction of the slide block driving plate mounting groove.

In the plastic lock sleeve of the vehicle door lock, a torsion spring avoiding notch is arranged at the end part of the groove wall of the slide block driving plate mounting groove.

In the plastic lock sleeve of the vehicle door lock, the other end of the outer plastic lock sleeve, which is provided with the lock cylinder installation groove, is provided with a boss.

In the plastic lock sleeve of the vehicle door lock, two head end openings of the self-tapping screw sleeve are horn-shaped, and one end of the self-tapping screw sleeve is provided with a self-tapping notch.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention adopts plastic to replace zinc alloy, realizes light weight of products and can save the manufacturing cost of parts.

2. The production process of the invention has no electroplating link, and can avoid the pollution of the current electroplating process to the environment.

3. The invention adopts the self-tapping screw sleeve, has high product strength and wear resistance, can realize the connection and fixation of the self-tapping screw sleeve and the outer plastic lock sleeve by directly screwing the self-tapping screw sleeve into the outer plastic lock sleeve, and has high manufacturing efficiency.

4. The structural design of the invention can greatly shorten the production period of the automobile parts formed by the structure.

5. The locking plate can not directly act on the outer lock sleeve, but directly act on the inner lock sleeve, and the outer lock sleeve can not be damaged when illegal external force is used, so that the stress of the locking plate caused by the plastic material adopted in the structure of the invention is not influenced, and the structure design is reasonable.

6. After the structure of the invention is assembled into the lock core, only the externally assembled mounting threaded hole is required to have the requirements of disassembly and interchange, and a complete threaded hole is required to be provided, so that the product requirement and the interchangeability requirement can not be met by directly tapping on the plastic lock sleeve or adopting a self-tapping screw mode. The plastic thread strength can not bear the impact force during installation, and the strength of the thread hole is reinforced by adopting a metal material, so that the self-tapping screw sleeve can meet the use requirement by adopting metal.

7. In the structure of the invention, the self-tapping screw sleeve is completely in clearance-free fit with the plastic lock sleeve, the depth of engagement with the plastic lock sleeve is deeper than that of the knurling pressed-in screw sleeve, and the structural strength is firm.

In summary, the following steps: the scheme adopts the plastic lock sleeve with the self-tapping screw sleeve structure which has the advantages of higher production speed and light reliability to replace a zinc alloy lock sleeve, improves the product strength, accelerates the production speed of products, is convenient to manufacture and saves the cost, and can also reduce the pollution of electroplating to the environment.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the structure of FIG. 1;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view B-B of FIG. 2;

FIG. 5 is a cross-sectional view A-A of the outer plastic locking sleeve of FIG. 2;

FIG. 6 is a schematic view of a structure of a self-tapping notch arranged on a self-tapping screw sleeve;

FIG. 7 is an exploded view of a part of the present invention;

FIG. 8 is an enlarged schematic view of range a of FIG. 7;

fig. 9 is an enlarged schematic view of the range b in fig. 7.

Description of reference numerals: 1-outer plastic lock sleeve, 2-inner lock sleeve, 3-self-tapping screw sleeve, 4-self-tapping screw sleeve mounting hole, 5-positioning head, 6-door avoiding notch, 7-lock core mounting groove, 8-inner lock sleeve mounting groove, 9-slider catch plate mounting groove, 10-water leakage hole, 11-idle ramp, 12-torsion spring avoiding notch, 13-boss, 14-self-tapping notch, 15-cap, 16-baffle, 17-pin, 18-locking plate, 19-slider, 20-catch plate, 21-compression torsion spring, 22-connecting plate, 23-elastic collar, 24-clip, 25-spring, 26-lock core.

Detailed Description

The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention. The structures or processes not specifically mentioned are conventional in the art.