Vehicle door lock and installation method thereof

Abstract

The present invention discloses a vehicle door lock and an installation method thereof. The vehicle door lock comprises a lock core and a clamping plate. The lock core comprises a lock cap and an axle housing. The lock cap is provided at one end of the axle housing, and a plurality of first stoppers are provided circumferentially at intervals on the middle side surface of the axle housing. The clamping plate is provided with a through hole, and a plurality of first limit blocks are provided circumferentially at intervals on the inner side wall of the through hole. The clamping plate can be inserted from the end of the axle housing onto the axle housing between the lock cap and the first stoppers. After insertion, the clamping plate can be rotated in a first circumferential direction around the axis of the through hole so that each first stopper can contact and abut against the end face of a corresponding first limit block, thereby forming a gap between the lock cap and the clamping plate along the axial direction of the axle housing to clamp the vehicle door outer panel. A non-elastic interference fit clamping structure is used to install the lock core, thereby improving the rigidity and strength of the lock core clamping structure, making it less susceptible to damage, and improving the safety of the vehicle door lock.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle door locks, and in particular to a vehicle door lock and an installation method thereof. Background Art

[0002] Door locks are an important component of automobiles, ensuring the safety and reliability of the vehicle. Most existing door lock cylinders are secured to the door exterior panel via elastic springs. For example, the specification of Chinese utility model patent CN201661149U discloses a reinforced door lock cylinder retaining spring, comprising a single-piece lock cylinder retaining spring. The retaining spring is characterized by a rear retaining plate provided on the single-piece lock cylinder retaining spring, the rear retaining plate being integrally connected to the single-piece lock cylinder retaining spring, and a slot in the rear retaining plate being securely connected to the rear portion of the lock cylinder housing. While this structure effectively prevents the use of illegal tools to open the door through the lock cylinder keyhole, the elastic retaining properties of the lock cylinder retaining spring leave a deformable space in the axial direction of the lock cylinder housing. Repeated shaking of the lock cylinder or the use of illegal tools through the window can easily cause the retaining plate to deform, thereby damaging the retaining structure of the lock cylinder and affecting vehicle safety. Summary of the Invention

[0003] The problem to be solved by the present invention is to provide a vehicle door lock and an installation method thereof, which adopts a non-elastic interference fit clamping structure to install the lock core, thereby improving the rigidity and strength of the lock core clamping structure, making it less susceptible to damage, and improving the safety of the vehicle door lock.

[0004] To solve the above technical problems, the present invention provides, on one hand, a vehicle door lock, comprising a lock cylinder and a card plate, wherein the lock cylinder comprises a lock cap and an axle housing, the lock cap being provided at one end of the axle housing, and a plurality of first stoppers being provided circumferentially spaced on the central side surface of the axle housing; the card plate being provided with a through hole, and a plurality of first limit blocks being provided circumferentially spaced on the inner side wall of the through hole; the card plate being capable of being inserted from the end of the axle housing onto the axle housing between the lock cap and the first stopper, and after insertion, the card plate being rotated in a first circumferential direction about the axis of the through hole, so that each of the first stoppers can contact and abut against the end face of a corresponding first limit block, thereby forming a gap between the lock cap and the card plate along the axial direction of the axle housing to clamp the vehicle door outer panel. An axial interference margin is reserved between the first stopper and the end face of the first limit block, forming an interference clamping structure during installation.

[0005] In this vehicle door lock, a clamping plate secures the lock cylinder to the door outer panel, creating a non-elastic interference fit. Compared to conventional lock cylinder retaining springs, this design offers greater rigidity and strength, preventing cylinder movement and improving anti-theft performance and vehicle safety. Furthermore, this cross-sectional interference fit compensates for component dimensional tolerances in the axial direction of the axle housing, ensuring the strength of the interference fit connection.

[0006] As an improvement to the vehicle door lock of the present invention, the end faces where the first limit block and the first stop block contact and abut each other are both inclined surfaces, the inclined end face of the first limit block is inclined relative to the radial surface of the through hole, and the inclined end face of the first stop block is inclined relative to the radial surface of the shaft housing.

[0007] Furthermore, the oblique end surfaces of each of the first limiting blocks and the first stopper that contact and abut against each other are toothed surfaces, and can mesh with each other accordingly.

[0008] Furthermore, the toothed surfaces on which the first limiting blocks and the first stop blocks contact and abut against each other are ratchet teeth.

[0009] Furthermore, viewed along the axial direction of the through hole, the teeth on the toothed surface of each first limiting block are all located on the same end face gear tooth, and the axis of the end face gear tooth coincides with the axis of the through hole.

[0010] As another improvement of the vehicle door lock of the present invention, a plurality of second limit blocks and a plurality of third limit blocks are further provided on one end face of the through hole; after the card plate is inserted into the axle housing, the card plate is rotated around the axis of the through hole so that each of the first limit blocks respectively contacts and abuts against the end face of one of the first limit blocks; at the same time, each of the second limit blocks and each of the third limit blocks can respectively contact and limit the side face of one of the first limit blocks, thereby limiting the rotation of the card plate around the axis of the through hole.

[0011] Furthermore, the second limit block includes an elastic arm fixed at one end on the end face of the through hole and a limit flange provided on the elastic arm; viewed along the axial direction of the through hole, the elastic arm is located on the outside of the through hole, the limit flange extends from the elastic arm into the through hole, and in the first circumferential direction, the limit flange is located on the front side of a corresponding first limit block.

[0012] Furthermore, the third limit block is fixed on the end face of the through hole; viewed along the axial direction of the through hole, the third limit block extends from the outside to the inside of the through hole, and in the first circumferential direction, the third limit block is located on the rear side of the corresponding first limit block.

[0013] The second limiting block and the third limiting block are used to limit the circumferential position of the clamping plate installed on the shaft housing to prevent the clamping plate from loosening, thereby further improving the fixing reliability of the lock core.

[0014] As another improvement of the vehicle door lock of the present invention, the clamping plate is fixedly connected to the vehicle door inner panel by screws.

[0015] Furthermore, the side of the card plate provided with the first limit block is also provided with a linear guide structure, a slider and a limiting structure; the guiding direction of the linear guide structure is perpendicular to the axis of the through hole; the limiting structure is used to limit the slider to only slide linearly from one end to the other end on the linear guide structure; a self-tapping threaded bottom hole is provided on the slider along the linear sliding direction, and the self-tapping threaded bottom hole is used to be fixedly connected to the inner panel of the vehicle door by a self-tapping screw.

[0016] Furthermore, the self-tapping screw passes through the X-direction end plate of the door inner panel and is threaded into the self-tapping thread bottom hole along a direction horizontally and perpendicular to the axis of the through hole.

[0017] On the one hand, the self-tapping screws that secure the card plate to the inner door panel prevent the lock cylinder from shaking or being damaged in any direction, improving anti-theft performance and ensuring that the door lock cylinder is safely protected within the internal cavity of the inner and outer door panels. On the other hand, the slider and automatic screw self-tapping connection structure can screw the slider in according to the set route even if there are errors in the fit between the card plate and the outer door panel, the rotational preload margin between the card plate and the lock cylinder, and the X-axis fixed position of the card plate, achieving tolerance compatibility and ensuring design and manufacturing feasibility while meeting the functional requirements.

[0018] As another improvement of the vehicle door lock of the present invention, the clamping plate further includes a gasket provided at one end of the through hole, the gasket being used to be provided axially between the clamping plate body and the vehicle door outer panel, and the gasket is made of metal material.

[0019] Usually, the gasket can be made of zinc-aluminum alloy die-casting. After installation, the gasket contacts the inner side of the door outer panel, and the metal-to-metal friction coefficient is small, which is easy to install. The bracket can be made of plastic injection molding.

[0020] In order to solve the above technical problems, the present invention provides, on the other hand, a method for installing the above vehicle door lock, which is characterized by comprising:

[0021] Insert the lock cylinder shaft housing into the mounting hole of the door outer panel from the outside;

[0022] Sleeve the clamping plate onto the shaft housing from the end of the shaft housing;

[0023] The clamping plate is rotated to make the end faces of the first limiting block and the first stop block contact and abut against each other, so that the lock core is clamped and fixed on the vehicle door outer panel along the axial direction of the shaft housing.

[0024] In summary, the above-mentioned door lock and installation method thereof have the following beneficial effects:

[0025] (1) Secure the door lock cylinder firmly between the inner and outer door panels to prevent the lock cylinder from shaking and ensure that the door lock cylinder is safely protected in the cavity between the inner and outer door panels;

[0026] (2) The entire structure has low requirements for installation and component dimensional accuracy, ensuring the feasibility of design and manufacturing while meeting the functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In the attached figure:

[0028] Figure 1 This is a structural diagram of the vehicle door lock of the present invention installed on the outer side of the vehicle door outer panel;

[0029] Figure 2 This is a structural diagram of the door lock of the present invention installed on the inner side of the door outer panel;

[0030] Figure 3 for Figure 2 Split structure diagram of ;

[0031] Figure 4 This is a structural diagram of the card plate of the vehicle door lock of the present invention from a first perspective;

[0032] Figure 5 This is a structural diagram of the lock cylinder of the vehicle door lock of the present invention from a first perspective;

[0033] Figure 6 This is a structural diagram of the lock cylinder of the vehicle door lock of the present invention from a second perspective;

[0034] Figure 7 This is a structural diagram of the card plate of the vehicle door lock of the present invention from a second perspective;

[0035] Figure 8 This is a third-view disassembled structural diagram of the card plate of the vehicle door lock of the present invention;

[0036] Figure 9 This is a disassembled structural diagram of the card plate of the vehicle door lock of the present invention from the fourth perspective;

[0037] Figure 10 This is a structural diagram of the door lock of the present invention installed on the door outer panel and the door inner panel.

[0038] In the figure, 1, lock core; 11, lock cap; 12, shaft housing; 13, first stopper; 131, first stopper a; 132, first stopper b; 133, first stopper c; 134, first stopper d; 14, second stopper; 2, card plate; 21, through hole; 22, first limit block; 221, first limit block a; 222, first limit block b; 223, first limit block c; 224, first limit block d Limit block; 23. Second limit block; 231. Elastic arm; 232. Limit flange; 24. Third limit block; 25. Guide rail structure; 251. T-shaped track; 252. Elastic buckle tongue; 26. Slider; 261. Self-tapping threaded bottom hole; 262. T-shaped groove; 263. Hook; 27. Gasket; 3. Door outer panel; 31. Lock hole; 32. Notch; 4. Self-tapping screw; 5. Door inner panel. DETAILED DESCRIPTION

[0039] The following further describes the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0040] Example 1

[0041] Figure 1-10 FIG. 1 shows a car door lock according to the present invention. Figure 1-3 As shown, the vehicle door lock includes a lock core 1 and a card plate 2. The lock core 1 includes a lock cap 11 and an axle housing 12. The lock cap 11 is provided at one end of the axle housing 12, and a plurality of first stops 13 are circumferentially spaced on the middle side surface of the axle housing 12; a through hole 21 is provided on the card plate 2, and a plurality of first limit blocks 22 are circumferentially spaced on the inner side wall of the through hole 21; the card plate 2 can be inserted from the end of the axle housing 12 onto the axle housing 12 between the lock cap 11 and the first stop block 13, and after being inserted, the card plate 2 can be rotated in the first circumferential direction around the axis of the through hole 21, so that each first stop block 13 can be respectively contacted and abutted against the end face of a first limit block 22, thereby forming a gap between the lock cap 11 and the card plate 2 along the axial direction of the axle housing 12 to clamp the vehicle door outer panel 3.

[0042] The end surface of the first stopper 13 refers to the end surface along the axial direction of the shaft housing 12 ; the end surface of the first limiting block 22 refers to the end surface along the axial direction of the through hole 21 .

[0043] like Figure 3 As shown, the door outer panel 3 is provided with a lock hole 31, which is circumferentially spaced with notches 32. A plurality of second stoppers 14 are circumferentially spaced on the side surface of the end of the axle housing 12 near the lock cap 11. When the axle housing 12 is axially inserted into the lock hole 31, each second stopper 14 fits into a corresponding notch 32, restricting the axle housing 12 from rotating relative to the door outer panel 3.

[0044] In some embodiments, the number of the second stops 14 and the number of the notches 32 are the same, four each, and the circumferential center lines of the second stops 14 are staggered by 90° along the circumferential direction, that is, they are evenly arranged along the circumferential direction.

[0045] In some embodiments, the number of the first stoppers 13 is not greater than the number of the notches 32 , and the optimal choice is that the number is the same as the number of the notches 32 . Figure 3 When the shaft housing 12 is inserted into the locking hole 31 along the axial direction, each first stopper 13 can pass through a corresponding notch 32 .

[0046] In some embodiments, each first stopper 13 is aligned with a second stopper 14 along the axial direction of the shaft housing 12 , ensuring that the shaft housing 12 can smoothly pass through the locking hole 31 at one time.

[0047] like Figure 3 As shown, the number of first stoppers 22 is the same as the number of first stoppers 13, with both shown as four. Furthermore, the circumferential gaps between the first stoppers 22 allow the first stoppers 13 to pass through when the shaft housing 12 passes through the through-hole 21. This allows each first stopper 13 to pass through a corresponding gap between the first stoppers 22 when the shaft housing 12 axially passes through the through-hole 21.

[0048] In some embodiments, the circumferential center lines of the first limiting blocks 22 are staggered by 90° along the circumferential direction, that is, they are evenly arranged along the circumferential direction.

[0049] During use and installation, the shaft housing 12 passes through the lock hole 31 and the through hole 21 in turn, and then the card plate 2 is rotated so that each first stop block 13 contacts and abuts against the end face of a first limit block 22 respectively, that is, the first stop block 13 and the end face of the first limit block 22 are clamped and fastened by the interference fit between the end faces of the first stop block 13 and the first limit block 22 to achieve the axial clamping and fixing of the lock core 1 on the vehicle door outer panel 3 along the shaft housing 12. At this time, the lock cap 11 is tightly attached to the outer surface of the vehicle door outer panel 3. Figure 2 This is the clamped state after the clamping plate 2 is rotated and installed. P is in the first circumferential direction, which is counterclockwise when viewed from the inner side of the vehicle door outer panel 3.

[0050] like Figure 3-6 As shown, the end faces of the first limit block 22 and the first stop block 13 that contact and abut against each other are both inclined surfaces. By rotating, the inclined surfaces are made to face each other and gradually contact and fit with each other, thereby achieving rotational interference fit.

[0051] like Figure 3 and Figure 4 As shown, the inclined end surface of the first stopper 22 is inclined relative to the radial surface of the through hole 21; the end surface of the first stopper 22 away from the door outer panel 3 when installed is inclined relative to the radial surface of the through hole 21. For easy observation, Figure 4 The four first limiting blocks 22 are respectively marked as a first limiting block 221 , a first limiting block 222 , a first limiting block 223 and a first limiting block 224 .

[0052] like Figure 5 and Figure 6 As shown, the inclined end surface of the first stopper 13 is inclined relative to the radial surface of the shaft housing 12, and the end surface of the first stopper 13 close to the lock cap 11 is arranged inclined relative to the radial surface of the shaft housing 12. Figure 5 and Figure 6The four first stops 13 are respectively marked as a first a stop 131 , a first b stop 132 , a first c stop 133 and a first d stop 134 .

[0053] In some embodiments, the inclined end surface of each first stopper 22 protrudes from the end surface of the through hole 21, which facilitates processing and also facilitates observation during installation. The first stopper 13 is in the shape of an arc-shaped plate that fits against the side surface of the shaft housing 12. The end surface near the locking cap 11 is inclined, and both circumferential side surfaces are located on the radial surface of the shaft housing 12.

[0054] In some embodiments, after installation, the oblique end surfaces of each first limiting block 22 along the first circumference and the oblique end surfaces of each first limiting block 22 are both in a downward slope state, gradually approaching the vehicle door outer panel 3 .

[0055] In certain embodiments, the oblique end surfaces of the first limit block 22 and the first stopper 13 that contact and abut each other are toothed surfaces that mesh with each other. The toothed oblique surfaces engage each other, preventing loosening after installation and further strengthening the interference fit. Furthermore, the toothed surfaces are made of plastic, which has a certain toughness, allowing for interference fit and a secure fit.

[0056] In some embodiments, the toothed surfaces of the first limit block 22 and the first stopper 13 that contact and abut against each other are ratchet teeth. With the ratchet structure, after the rotating clamping plate 2 is engaged and clamped, the ratchets restrict the clamping plate 2 from rotating in the opposite direction, that is, restricting the clamping plate 2 from rotating in the direction opposite to the first circumferential direction. Since the toothed surfaces are all inclined, rotation of the clamping plate 2 along the first circumferential direction is also restricted, thereby firmly fixing the clamping plate 2 to the lock cylinder 1.

[0057] In certain embodiments, when viewed axially along the through hole 21, the teeth on the toothed surfaces of each first stopper 22 are all located on the same end face gear tooth, and the axis of the end face gear tooth coincides with the axis of the through hole 21. The incomplete end face ratchet teeth disposed on the oblique end face are all portions of the same end face ratchet tooth. This allows the position of each incomplete end face ratchet tooth relative to the rotation center to remain unchanged during rotation along the first circumferential direction, thereby better engaging and limiting the first stopper 13.

[0058] In addition, the same is true for the first stoppers 13 . When viewed along the axial direction of the shaft housing 12 , the teeth on the toothed surface of each first stopper 13 are located on the same end ratchet tooth, and the axis of the end ratchet tooth coincides with the axis of the through hole 21 .

[0059] like Figure 2-3As shown, a plurality of second limit blocks 23 and a plurality of third limit blocks 24 are also provided on one end face of the through hole 21; after the card plate 2 is inserted into the shaft housing 12, the card plate 2 is rotated around the axis of the through hole 21, so that each first limit block 13 is respectively in contact with and abuts against the end face of a first limit block 22; at the same time, each second limit block 23 and each third limit block 24 can respectively contact and limit with the side face of a first limit block 13, thereby limiting the rotation of the card plate 2 around the axis of the through hole 21.

[0060] After the clamping plate 2 is rotated and installed in place, the second limiting block 23 and the third limiting block 24 each contact and limit the position with a side surface of the first stop block 13, further limiting the axial position between the clamping plate 2 and the shaft housing 12. The side surface refers to the circumferential direction. The side surfaces of the second limiting block 23 and the third limiting block 24 refer to the side surfaces along the circumference of the through hole 21; the side surfaces of the first stop block 13 refer to the side surfaces along the circumference of the shaft housing 12.

[0061] The following description will be made by taking an example in which the second limiting block 23 is used to limit the rotation of the clamping plate 2 in the opposite direction of the first circumferential direction, and the third limiting block 24 is used to limit the rotation of the clamping plate 2 in the first circumferential direction.

[0062] In certain embodiments, as Figure 2-4 and Figure 7 As shown, the second limiting block 23 includes an elastic arm 231 having one end fixed to the end surface of the through hole 21 and a limiting flange 232 provided on the elastic arm 231. As viewed along the axial direction of the through hole 21, the elastic arm 231 is located outside the through hole 21, and the limiting flange 232 extends from the elastic arm 231 into the through hole 21. In the first circumferential direction, the limiting flange 232 is located on the front side of the corresponding first limiting block 22.

[0063] The elastic arm 231 is formed by a portion of the clamping plate 2 extending axially away from the main body along the through hole 21. The elastic arm 231 provides elastic deformation capability, allowing the limiting flange 232 to deform radially outward from the through hole 21. The limiting flange 232 is formed by a portion of the inner side surface of the elastic arm 231 protruding toward the through hole 21.

[0064] Since the second limit block 23 is located on the front side of the corresponding first limit block 22 in the first direction, when the clamping plate 2 is rotated in the first direction during installation, the elastic arm 231 will deform outward, allowing the limit flange 232 to slide across the outer side surface of the first limit block 13 and move from one side of the first limit block 13 to the other side for contact and limit. Note that the first limit block 22 corresponding to the second limit block 23 here means: the end face of the first limit block 13 that is contacted and limited by the side surface of the second limit block 23 is in contact and abuts against the end face of the first limit block 22; that is, the second limit block 23 and the first limit block 22 that are contacted and limited by the same first limit block 13 correspond to each other.

[0065] In certain embodiments, as Figure 4 As shown, the elastic arm 231 is configured in the shape of an arc plate, and a notch is provided at the bottom of the limiting flange 232 to facilitate elastic deformation. The limiting flange 232 is in the shape of a V-shaped straight strip, and its length direction is arranged along the axial direction of the through hole 21. One V-shaped side has a guiding function. During the rotation of the card plate 2, the card plate 2 is gradually released from the first stop block 13 and deformed. After the card plate 2 is rotated into place, the limiting flange 232 rotates relative to the other side of the first stop block 13, so that the other V-shaped side is fitted with the corresponding side of the first stop block 13 to limit the card plate 2 from rotating in the opposite direction along the first circumferential direction. Figure 4 In the figure, a schematic diagram of two second limit blocks 23 is given, which are arranged opposite to each other.

[0066] In some embodiments, the third limit block 24 is fixed on the end face of the through hole 21; viewed along the axial direction of the through hole 21, the third limit block 24 extends from the outside to the inside of the through hole 21, and in the first circumferential direction, the third limit block 24 is located on the rear side of the corresponding first limit block 22.

[0067] In some embodiments, the third stopper 24 is a V-shaped, straight, elongated block, with its length extending along the axial direction of the through-hole 21. During the rotation of the clamping plate 2, the third stopper 24 does not contact the first stopper 13. Only after the clamping plate 2 is fully rotated will a V-shaped surface of the third stopper 24 contact the first stopper 13, thereby limiting further rotation of the clamping plate 2 in the first circumferential direction.

[0068] It should also be noted that by rotating the clamping plate 2, the first limiting block 22, the second limiting block 23, the third limiting block 24, and the first stopper 13 can be staggered in the axial direction of the shaft housing 12. This allows the clamping plate 2 to be inserted from the end of the shaft housing 12 onto the shaft housing 12 between the door outer panel 3 and the first limiting block 22.

[0069] Similarly, the first limit block 22 corresponding to the third limit block 24 means that the end face of the first limit block 13 that contacts and limits the side of the third limit block 24 contacts and abuts against the end face of the first limit block 22; that is, the third limit block 24 and the first limit block 22 that contact and limit the same first limit block 13 correspond to each other. Figure 4 In the figure, a schematic diagram of a second limiting block 23 is given, which is arranged opposite to each other.

[0070] In some embodiments, the inner side walls of the first limit block 22 are all located on the same cylindrical side, and the axis of the annular surface coincides with the axis of the through hole 21, so that the clamping plate 2 can be sleeved on the shaft housing 12. The specific annular surface diameter is slightly larger than the size of the shaft housing 12.

[0071] In some embodiments, the clamping plate 2 is fixedly connected to the door inner panel 5 by screws.

[0072] like Figure 2-4 and Figure 7-10 As shown, the card plate 2 is provided with a first limit block 22 on one side thereof and is also provided with a linear guide structure 25, a slider 26 and a limit structure; the guiding direction of the linear guide structure 25 is perpendicular to the axis of the through hole 21; the limit structure is used to limit the slider 26 to only slide linearly from one end to the other end on the linear guide structure 25; a self-tapping threaded bottom hole 261 is provided on the slider 26 along the linear sliding direction, and the self-tapping threaded bottom hole 261 is used to be fixedly connected to the door inner panel 5 by a self-tapping screw 4.

[0073] The use of self-tapping screws 4 for fastening can allow a certain dimensional error of the clamping plate 2 relative to the designed position in the vehicle X direction, reduce the position accuracy requirements for installation and ensure that the connection strength remains unchanged.

[0074] In some embodiments, the self-tapping screw 4 passes through the X-direction end plate of the door inner panel 5 and is threaded into the self-tapping thread bottom hole 261 along a direction horizontally and perpendicular to the axis of the through hole 21 .

[0075] After the card plate 2 is rotated and installed, the self-tapping threaded bottom hole 261 is designed to be installed horizontally and perpendicular to the axis of the through hole 21. In this way, during installation, the self-tapping screw 4 is tightened from the through hole 21 on the X-axis end plate of the door inner panel 5 to the self-tapping threaded bottom hole 261 of the slider 26. As the self-tapping screw 4 is screwed in, the slider 26 will be pulled to the extreme position at one end of the linear guide structure 25, thereby realizing a fixed connection between the card plate 2 as a whole and the door inner panel 5. Figure 10 In the figure, the right door is taken as an example.

[0076] In some embodiments, the main body of the card plate 2 is in the shape of a gate hole, consisting of a semicircular plate and a rectangular plate, the middle of the semicircular plate is provided with a through hole 21, and the bottom of the rectangular plate is provided with a linear guide structure 25. Usually, after the card plate 2 is installed, the bottom edge of the rectangular plate is horizontal.

[0077] In certain embodiments, as Figure 9 As shown, the linear guide structure 25 includes a T-shaped track 251 and an elastic latch 252. The T-shaped track 251 is inverted, with one end fixed to the card plate 2, forming a limit in one direction for the sliding of the slider 26, and the other end is used to insert the slider 26. The main body of the elastic latch 252 is arranged parallel to the bottom of the T-shaped track 251. The latch with a raised end can elastically deform away from the T-shaped track 251 to facilitate the installation of the slider 26, and can cooperate with the hook 263 on the slider 26 to form a limit in the other direction for the sliding of the slider 26. The slider 26 is rectangular, with a T-shaped groove 262 on the top that can be embedded with the T-shaped track 251 and a hook 263 on the bottom. The slider 26 slides along the T-shaped track 251.

[0078] The limiting structure consists of the elastic tongue 252 and the main body of the card plate 2 at the fixed end of the linear guide structure 25, which limits the sliding of the slider 26. After the rectangular plate of the card plate 2 is installed, a notch can be opened near the bottom corner of the end plate of the door inner panel 5X to fix the T-shaped track 251, the elastic tongue 252, and the slider 26.

[0079] When the slider 26 is assembled to the card plate 2, the T-shaped groove 262 is first placed on one end of the T-shaped track 251, and then the slider 26 is pushed to move, so that the upper surface of the hook 263 squeezes the elastic buckle tongue 252 to deform, and then the entire T-shaped groove 262 is pressed into the T-shaped track 251. After the assembly is completed, the slider 26 is in Figure 7 The status shown.

[0080] When in use, after the card plate 2 is rotated and installed in place, the slider 26 is in the position as shown in FIG. Figure 7 The position shown is then driven into the self-tapping screw 4 in the horizontal direction. Since the slider 26 is against the main body of the card plate 2 and cannot move, the self-tapping screw 4 is driven into the self-tapping threaded bottom hole 261. At this time, if there is an error in the position of the card plate 2 along the X direction of the vehicle, the self-tapping screw 4 is still driven in the predetermined direction. As the self-tapping screw 4 goes deeper, the screw cap will fit with the door inner panel 5 and will no longer extend further. Continuing to rotate the screw will make the slider 26 approach the X-direction end plate of the door inner panel 5 along the guide rail structure 25 until the hook 263 is hooked and limited with the elastic buckle tongue 252 to achieve a fixed connection.

[0081] In certain embodiments, as Figure 8 and 9 As shown, the card plate 2 also includes a gasket 27 at one end of the through hole 21. The gasket 27 is used to cushion between the card plate 2 and the door outer panel 3. The gasket 27 is made of the same metal material as the door outer panel 3, which has a low friction coefficient, is easy to rotate, and has high strength. The main body of the card plate 2 is usually made of engineering plastic material, which is low in cost and easy to manufacture.

[0082] The backing ring 27 is coaxially arranged with the through hole 21 and embedded in the clamping plate 2 , and the inner hole of the backing ring 27 constitutes a part of the through hole 21 .

[0083] In addition, it should be noted that the door lock can be fixed in a fixed position on the door, either outside the outside handle or in a position away from the outside handle, and can be arranged reasonably according to the space design. When installed in a position away from the outside handle, after-sales maintenance is convenient. During after-sales maintenance, the lock cylinder clamp plate 2 and lock cylinder 1 components can be removed by simply rotating the lock cylinder clamp plate to the designed angle according to the assembly method, significantly reducing the difficulty and cost of after-sales maintenance.

[0084] Example 2

[0085] The present invention provides a method for installing the vehicle door lock, comprising the following steps S10-S40.

[0086] Step S10: Insert the shaft housing 12 of the lock cylinder 1 into the mounting hole of the door outer panel 3 from the outside. The shaft housing 12 is inserted into the lock hole 31 so that the lock cap 11 is attached to the outside of the door outer panel 3, and each second stopper 14 is inserted into the corresponding notch 32.

[0087] Step S20: Slide the clamping plate 2 onto the axle housing 12 from the end thereof. Specifically, slide the clamping plate 2 between the first stopper 13 and the inner side of the door outer panel 3. When installing the clamping plate 2, ensure that the gap between the first stopper 22 is aligned with the first stopper 13, and that the first stopper 22 is circumferentially adjacent to the corresponding first stopper 13 so that the clamping plate 2 can quickly mate and contact with each other by rotating the clamping plate 2.

[0088] Step S30 : rotating the clamping plate 2 so that the end faces of the first limiting block 22 and the first stopper 13 contact and abut against each other, thereby clamping and fixing the lock cylinder 1 on the door outer panel 3 along the axial direction of the shaft housing 12 .

[0089] Based on the structure of the four first limit blocks 22 being evenly arranged in the circumferential direction, the first limit blocks 22 and the corresponding first stop blocks 13 are kept at a circumferential difference of about 45 degrees during installation. By rotating the card plate 2 about 45 degrees in the first direction, the pairing and contact can be quickly formed. Figure 2 At the same time, due to the elastic deformation ability of the elastic arm 231, the second limit block 23 moves from one side of the corresponding first stop block 13 to the other side to fit the limit position as the card 2 rotates; the third limit block 24 moves directly to fit the one side of the corresponding first stop block 13 to fit the limit position.

[0090] In addition, since the end faces of the first limit block 22 and the first stop block 13 are both inclined ratchet surfaces and have a certain amount of interference, it is necessary to ensure that they are rotated into place during installation, that is, stop rotating after the second limit block 23 and the third limit block 24 simultaneously contact the side of the first stop block 13 to limit the position.

[0091] In some embodiments, the method further includes step S40 : fastening the clamping plate 2 to the X-direction end plate of the door inner panel 5 by screws.

[0092] Specifically, after the card plate 2 is rotated and installed in place, the slider 26 is in the following Figure 7 As shown in the figure, the self-tapping screw 4 is then driven into the horizontal direction. Since the slider 26 is pressed against the main body of the card plate 2 and cannot move, the self-tapping screw 4 is driven into the self-tapping threaded bottom hole 261. As the self-tapping screw 4 goes deeper, the screw cap will fit with the door inner panel 5 and will no longer extend further. Continuing to rotate the screw will make the slider 26 approach the X-direction end plate of the door inner panel 5 along the guide rail structure 25 until the hook 263 is hooked and limited with the elastic buckle tongue 252 to achieve a fixed connection.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit its scope of protection. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that after reading the present invention, those skilled in the art may still make various changes, modifications or equivalent substitutions to the specific implementation methods of the invention, but these changes, modifications or equivalent substitutions are all within the scope of protection of the pending claims of the invention.

Claims

1. A car door lock, characterized in that: The invention comprises a lock core (1) and a card plate (2), wherein the lock core (1) comprises a lock cap (11) and an axle housing (12), wherein the lock cap (11) is provided at one end of the axle housing (12), and a plurality of first stoppers (13) are provided at intervals along the circumferential direction on the side surface of the middle portion of the axle housing (12); a through hole (21) is provided on the card plate (2), and a plurality of first limit blocks (22) are provided at intervals along the circumferential direction on the inner side wall of the through hole (21); the card plate (2) can be moved from the axle housing (1 2) is inserted into the shaft housing (12) between the locking cap (11) and the first stopper (13), and after being inserted into the shaft housing (12), the clamping plate (2) is rotated in the first circumferential direction around the axis of the through hole (21), so that each of the first stoppers (13) can be brought into contact with and abut against the end face of one of the first limiting blocks (22), thereby forming a gap between the locking cap (11) and the clamping plate (2) along the axial direction of the shaft housing (12) to clamp the door outer panel (3); The end surfaces of the first limit block (22) and the first stop block (13) that contact and abut against each other are both inclined surfaces, the inclined end surface of the first limit block (22) is inclined relative to the radial surface of the through hole (21), and the inclined end surface of the first stop block (13) is inclined relative to the radial surface of the shaft housing (12); The oblique end surfaces of each of the first limiting blocks (22) and the first stopper (13) that contact and abut against each other are tooth-shaped surfaces and can mesh with each other.

2. A vehicle door lock according to claim 1, characterized in that: The toothed surfaces where the first limiting blocks (22) and the first stop blocks (13) contact and abut against each other all adopt ratchet teeth.

3. The vehicle door lock according to claim 1, characterized in that: Viewed along the axial direction of the through hole (21), the teeth on the toothed surface of each first limiting block (22) are all located on the same end face gear tooth, and the axis of the end face gear tooth coincides with the axis of the through hole (21).

4. The vehicle door lock according to claim 1, characterized in that: A plurality of second limiting blocks (23) and a plurality of third limiting blocks (24) are also provided on one end face of the through hole (21); after the clamping plate (2) is sleeved on the shaft housing (12), the clamping plate (2) is rotated around the axis of the through hole (21), so that each of the first limiting blocks (13) contacts and abuts against the end face of one of the first limiting blocks (22), and each of the second limiting blocks (23) and each of the third limiting blocks (24) can contact and limit the side face of one of the first limiting blocks (13), thereby limiting the rotation of the clamping plate (2) around the axis of the through hole (21).

5. The vehicle door lock according to claim 4, characterized in that: The second limiting block (23) comprises an elastic arm (231) with one end fixed on the end surface of the through hole (21) and a limiting flange (232) provided on the elastic arm (231); Viewed along the axial direction of the through hole (21), the elastic arm (231) is located outside the through hole (21), the limiting flange (232) extends from the elastic arm (231) into the through hole (21), and in the first circumferential direction, the limiting flange (232) is located on the front side of a corresponding first limiting block (22).

6. The vehicle door lock according to claim 4, characterized in that: The third limiting block (24) is fixed on the end face of the through hole (21); viewed along the axial direction of the through hole (21), the third limiting block (24) extends from the outside to the inside of the through hole (21), and in the first circumferential direction, the third limiting block (24) is located on the rear side of the corresponding first limiting block (22).

7. The vehicle door lock according to claim 1, characterized in that: The clamping plate (2) is fixedly connected to the vehicle door inner panel (5) via screws.

8. The vehicle door lock according to claim 7, characterized in that: The card plate (2) is provided with a linear guide rail structure (25), a slider (26) and a limiting structure on one side of the first limiting block (22); the guiding direction of the linear guide rail structure (25) is perpendicular to the axis of the through hole (21); the limiting structure is used to limit the slider (26) to only slide linearly from one end to the other end on the linear guide rail structure (25); a self-tapping threaded bottom hole (261) is provided on the slider (26) along the linear sliding direction, and the self-tapping threaded bottom hole (261) is used to be fixedly connected to the door inner panel (5) through a self-tapping screw (4).

9. A vehicle door lock according to claim 1, wherein the card plate (2) further includes a gasket (27) at one end of the through hole (21), the gasket (27) being used to be arranged axially between the card plate (2) body and the vehicle door outer panel (3), and the gasket (27) is made of metal material.

10. A method for installing a vehicle door lock according to any one of claims 1 to 9, characterized in that: include: Insert the shaft housing (12) of the lock core (1) into the mounting hole of the vehicle door outer panel (3) from the outside; The clamping plate (2) is sleeved onto the shaft housing (12) from the end of the shaft housing (12); The clamping plate (2) is rotated to make the end faces of the first limiting block (22) and the first stopper (13) contact and abut against each other, thereby clamping and fixing the lock core (1) on the vehicle door outer panel (3) along the axial direction of the shaft housing (12).

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