Automobile door lock catch

Abstract

The utility model discloses a kind of car door lock catch, it is related to automobile parts technical field.The car door lock catch includes the bottom plate of stainless steel material and the lock catch of stainless steel material, two positioning through holes being spaced apart are opened in bottom plate middle part;Lock catch is U-shaped round bar, it includes horizontal bar and two vertical rods respectively integrally vertically arranged in the both ends of horizontal bar, two vertical rods are matched with two positioning through holes respectively, and two vertical rods are respectively used to pass through two positioning through holes, the end edge of vertical rod is provided with chamfer, and the end of vertical rod is processed to form rivet head by spin riveting process after passing through positioning through hole, rivet head is used to resist in the bottom end of positioning through hole, annular step is arranged on vertical rod above positioning through hole in circumferential direction, annular step is used to resist in the top end of positioning through hole.The car door lock catch assembly process is smooth, assembly precision is high, to guarantee the precision of riveting position, improve riveting quality.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an automotive door lock latch. Background Technology

[0002] The car door latch is a mechanical component in the car door lock system. It works with the lock body mechanism on the door. When the door is closed, the latch or pawl in the door lock body mechanism engages in the latch's slot, locking the door and preventing it from being opened accidentally. When the door is opened, the door handle moves the lock body mechanism, causing the latch or pawl to disengage from the latch, releasing the lock and enabling the door to be locked, secured, and opened.

[0003] Currently, car door lock latches are typically made of iron, which are fixed together using hot-melt riveting. However, for high-end models with higher strength and aesthetic requirements, stainless steel door lock latches are used. Stainless steel has high strength and high-temperature stability, but a high melting point. Hot-melt riveting requires heating the material to near-molten state, which could result in extremely high temperatures, leading to high energy consumption and low efficiency. Therefore, stainless steel car door lock latches are generally fixed together using screw riveting. However, stainless steel car door lock latches have high requirements for appearance and precision, so the assembly precision requirements during installation and riveting are naturally high. Therefore, it is necessary to provide a car door lock latch with improved assembly precision. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an automobile door lock latch that has a smooth assembly process and high assembly precision, thereby ensuring the accuracy of the riveting position and improving the riveting quality.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A car door latch includes a stainless steel base plate and a stainless steel latch. The base plate has two spaced-apart positioning through holes in the middle. The latch is a U-shaped round bar, which includes a horizontal bar and two vertical bars integrally and vertically disposed at both ends of the horizontal bar. The two vertical bars are respectively matched with the two positioning through holes and are used to pass through the two positioning through holes. The end edges of the vertical bars are chamfered, and after the end of the vertical bar passes through the positioning through hole, a rivet head is formed by riveting. The rivet head is used to abut against the bottom of the positioning through hole. An annular step is provided on the vertical bar above the positioning through hole along the circumferential direction. The annular step is used to abut against the top of the positioning through hole.

[0007] In some embodiments, a convex bulge is formed in the middle of the base plate by a stamping process, and a positioning groove is formed at the bottom of the convex bulge; two positioning through holes are located on the convex bulge; and rivet heads are located in the positioning groove.

[0008] In at least one embodiment, the convex hull and the positioning groove are waist-shaped; the two positioning through holes are respectively concentrically arranged with the two semi-circular ends of the convex hull; the rivet head is disc-shaped, and the rivet heads at the ends of the two vertical bars are respectively concentrically arranged with the two semi-circular ends of the positioning groove.

[0009] Compared with the prior art, this utility model achieves at least the following beneficial effects:

[0010] The locking mechanism of this invention features a chamfered edge at the end of the vertical bar, achieved through grinding. This chamfer serves as a guide, assisting in the quick alignment of the locking mechanism with the positioning through hole during assembly of the locking mechanism and the base plate. On automated production lines, this facilitates the smooth insertion of the locking mechanism's vertical bar into the positioning through hole by the corresponding assembly equipment, reducing resistance and wear on parts during assembly, ensuring smooth assembly, and achieving high assembly precision. Furthermore, it improves the accuracy of the riveting position and enhances the riveting quality during subsequent riveting processes. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0012] Figure 2 This is a structural schematic diagram from another perspective of an embodiment of this application;

[0013] Figure 3 This is an exploded view of an embodiment of this application;

[0014] Figure 4 This is a flowchart illustrating the manufacturing process of the latch in an embodiment of this application.

[0015] The following are the labels in the diagram: 1. Base plate; 11. Positioning through hole; 12. Tapered countersunk hole; 2. Locking buckle; 21. Horizontal bar; 22. Vertical bar; 3. Chamfer; 4. Rivet head; 5. Annular step; 6. Protrusion; 7. Positioning groove; 8. Pad; 81. Connecting hole. Detailed Implementation

[0016] The present invention will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present application may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of this application more complete and to fully convey the concept of the present application to those skilled in the art.

[0017] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Moreover, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0018] like Figures 1-4As shown, the car door latch provided in this embodiment includes a stainless steel base plate 1 and a stainless steel latch 2. The base plate 1 has two spaced-apart positioning through holes 11 in its center. The latch 2 is a U-shaped rod, comprising a horizontal bar 21 and two vertical bars 22 integrally and vertically disposed at both ends of the horizontal bar 21. The two vertical bars 22 are respectively matched with the two positioning through holes 11, and the two vertical bars 22 are respectively used to pass through the two positioning through holes 11. The end edges of the vertical bars 22 are chamfered 3, and the ends of the vertical bars 22 pass through the positioning through holes 11. The rivet head 4 is then formed by a riveting process. The riveting process involves applying continuous pressure and friction to the end of the vertical rod 22 through the high-speed rotation of the rivet head and the axial pressure, causing it to undergo plastic deformation to form the rivet head 4. The rivet head 4 is used to abut against the bottom of the positioning through hole 11. An annular step 5 is provided on the vertical rod 22 above the positioning through hole 11 along the circumferential direction. The annular step 5 is used to abut against the top of the positioning through hole 11. Through the limiting effect of the rivet head 4 and the annular step 5, the vertical rod 22, i.e. the latch 2, can be fixedly connected to the base plate 1. In this invention, the end edge of the vertical rod 22 is machined into an inclined chamfer 3 by grinding, thereby eliminating the original sharp edges. The chamfer 3 serves as a guide. When assembling the latch 2 and the base plate 1, the chamfer 3 at the end of the vertical rod 22 can help it quickly align with the positioning through hole 11. On an automated production line, it is convenient for the corresponding assembly equipment to smoothly insert the vertical rod 22 of the latch 2 into the positioning through hole 11, reducing resistance and wear of parts during assembly, ensuring smooth assembly, improving the accuracy of the riveting position during subsequent riveting processes, and improving the riveting quality.

[0019] refer to Figure 4 The manufacturing process of the latch 2 of this utility model is as follows: First, the latch 2 bar is cut from the round bar material. Then, the two ends of the latch 2 bar material are machined with annular steps 5 by a CNC machine tool. Then, the edges of the two ends of the latch 2 bar material are ground and chamfered 3. Next, the latch 2 bar material is bent into a U-shaped round bar. Finally, the assembly equipment inserts the U-shaped round bar into the positioning through hole 11 of the base plate 1. Since the end of the vertical bar 22 is chamfered 3, the assembly accuracy is ensured. In addition, the end of the vertical bar 22 is riveted by a riveting machine to form a rivet head 4, thereby realizing the fixed assembly of the latch 2 and the base plate 1 and ensuring the accuracy of the riveting position.

[0020] refer to Figure 1 and Figure 3A raised section 6 is formed in the middle of the base plate 1 through a stamping process, and a positioning groove 7 is formed at the bottom of the raised section 6; two positioning through holes 11 are located on the raised section 6; and the rivet head 4 is located in the positioning groove 7. Optionally, the raised section 6 and the positioning groove 7 are waist-shaped; the two positioning through holes 11 are respectively concentrically set with the two semi-circular ends of the raised section 6; the rivet head 4 is disc-shaped, and the rivet head 4 at the ends of the two vertical rods 22 is respectively concentrically set with the two semi-circular ends of the positioning groove 7. By setting the waist-shaped positioning groove 7, the riveting position accuracy is ensured, so that the rivet head 4 can be accurately formed, and the positioning groove 7 can limit the rivet head 4.

[0021] refer to Figure 2 and Figure 3 The car door latch also includes a pad 8, which is parallel to the bottom of the base plate 1 and is detachably connected to the base plate 1. The base plate 1 has tapered countersunk holes 12 on both sides of the latch 2; the pad 8 has two connecting holes 81 that match the tapered countersunk holes 12. The pad 8 and the base plate 1 are connected by countersunk screws, which pass through the tapered countersunk holes 12 and the connecting holes 81 in sequence and are threaded onto the car body, thereby fixing the car door latch to the car body.

[0022] It should be understood that all the above embodiments are exemplary and not restrictive. Any modifications, equivalent changes and alterations made by those skilled in the art to the specific embodiments described above under the concept of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A car door lock latch, characterized in that, include: The base plate is made of stainless steel, and there are two spaced positioning through holes in the middle of the base plate; The stainless steel buckle is a U-shaped bar, comprising a horizontal bar and two vertical bars integrally and vertically disposed at both ends of the horizontal bar. The two vertical bars are respectively matched with two positioning through holes and are used to pass through the two positioning through holes. The end edges of the vertical bars are chamfered, and after the end of the vertical bar passes through the positioning through hole, a rivet head is formed by riveting. The rivet head is used to abut against the bottom end of the positioning through hole. An annular step is provided on the vertical bar above the positioning through hole along the circumferential direction, and the annular step is used to abut against the top end of the positioning through hole.

2. The car door latch according to claim 1, characterized in that: The base plate has a convex bulge formed in the middle by a stamping process, and a positioning groove is formed at the bottom of the convex bulge; the two positioning through holes are located on the convex bulge; the rivet head is located in the positioning groove.

3. The car door latch according to claim 2, characterized in that: The convex bulge and positioning groove are waist-shaped; the two positioning through holes are respectively concentrically set with the two semi-circular ends of the convex bulge; the rivet head is disc-shaped, and the rivet heads at the ends of the two vertical rods are respectively concentrically set with the two semi-circular ends of the positioning groove.

4. The car door lock latch according to claim 1, characterized in that: It also includes a pad, which is disposed parallel to the bottom of the base plate and is detachably connected to the base plate.

5. The car door latch according to claim 4, characterized in that: The base plate has tapered countersunk holes on both sides of the buckle; the pad plate has two connecting holes that match the tapered countersunk holes, and the pad plate and the base plate are connected by countersunk screws.

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