CN115263106B - Automobile additional door lock and automobile - Google Patents

Abstract

The invention relates to the technical field of automobile safety equipment, and discloses an automobile additional door lock and an automobile, wherein the automobile additional door lock comprises a fixed box which is used for being installed on an automobile door to provide an installation foundation, one surface of the fixed box is provided with a sliding groove, and one end of the sliding groove is expanded to form an inlet groove; the lock body, the terminal surface part of its one end of keeping away from the entry groove outwards protrusion forms the spring bolt, the one side that the lock body is close to fixed box is provided with the backstop board that shape and entry groove match, be connected through diameter and sliding tray width assorted connecting portion between backstop board and the lock body. The invention has the following advantages and effects: the spring bolt and fixed box or the door of lock body bottom form pincerlike structure, form the interference with the handrail of getting on the bus from both sides, prevent that the door from opening, after the inside locking of door, the mechanical strength of whole additional lock is far superior to current mechanical lock, can effectively prevent that the driver from taking place unexpected when having a rest, and the installation is very simple simultaneously, need not to make very big change to the vehicle structure.

Description

Automobile additional door lock and automobile

Technical Field

The application relates to the technical field of automobile safety equipment, in particular to an automobile additional door lock and an automobile.

Background

At present, large trucks need long-distance operation, and are inevitably parked in remote and rare places. At this time, the antitheft function of the cab is an important dependence of the driver.

Conventional vehicles prevent unauthorized persons from opening the door from the outside through the door lock. Normally, a mechanical key or a remote key is required for unlocking the door from the outside, and the door cannot be unlocked without the key.

But both mechanical keys and remote keys are not secure enough. For example, when a car owner uses a remote controller to open and close a car door lock, the decoder can be used for intercepting an electronic signal sent by the remote controller, the electronic signal is analyzed and decoded by computer software of the decoder, and the decoded electronic signal is copied, so that the electronic signal is equivalent to the copy of a key of the car owner, and the car door can be opened by using the key. While the mechanical key may be broken by a tool such as a flat-nose screwdriver. Meanwhile, a truck driver often runs for long distance transportation and often stops in a service area to rest in a car, and the anti-theft performance of the current car door lock cannot be guaranteed. Thus, there is an urgent need for a safer anti-theft device for the driver when himself is in the cab.

Disclosure of Invention

Aiming at the defects in the prior art, the purpose of the application is to provide an additional door lock of an automobile and the automobile so as to provide an additional locking mechanism for passengers in a cabin, so that the passengers can not damage a lock body by external means when resting in the automobile, and the safety of the passengers is improved.

In order to achieve the above purpose, on one hand, the technical scheme adopted is as follows:

the application provides an additional lock of car for on having the car handrail of getting on bus, include:

the fixed box is used for being arranged on an automobile door to provide a mounting foundation, one surface of the fixed box is provided with a sliding groove, and one end of the sliding groove is expanded to form an inlet groove;

the lock body is provided with a stop plate matched with the inlet groove in shape on one surface close to the fixed box, and the stop plate is connected with the lock body through a connecting part matched with the width of the sliding groove in size;

when the automobile additional door lock is arranged on the automobile door and the automobile door additional door lock is in a locking state, the stop plate and the lock body are positioned on the inner side and the outer side of the sliding groove, the connecting part is abutted to one end, far away from the entrance groove, of the sliding groove, and a cavity for accommodating an upper handrail is formed between the lock tongue and the fixed box or between the lock tongue and the automobile door.

In a more preferred embodiment, the lock body is further provided with a lock channel;

the fixed box is also provided with a lock hole

The door additional door lock further comprises a locking bolt;

when the additional door lock of the vehicle door is in a locking state, the locking bolt penetrates through the lock channel to be in threaded connection with the lock hole.

In a more preferred embodiment, the locking bolt is provided with a first collar circumferentially.

In a more preferred embodiment, the lock channel comprises a first channel and a second channel in communication with each other, wherein the second channel has an inner diameter greater than the first channel and the second channel opens towards the stationary box;

the locking bolt includes:

the first check ring is circumferentially arranged on the outer wall of the bolt rod;

the butterfly-shaped end head is arranged at one end of the bolt rod far away from the fixed box, the outer diameter of the butterfly-shaped end head is larger than that of the bolt rod, and the butterfly-shaped end head and the bolt rod are detachably connected through a connecting piece;

part of the bolt rod is arranged in the first channel in a sliding way, and the first check ring is arranged in the second channel in a sliding way.

In a more preferred embodiment, the distance from the bottom surface of the butterfly end to the side of the first collar adjacent to the fixed box is equal to the length of the locking channel.

In a more preferred embodiment, the edge of the locking hole is further provided with a fixing nut, and the fixing nut is coaxial with the locking hole.

In a more preferred embodiment, the outer surfaces of the lock body and the locking bolt are provided with a soft coating for preventing bruising.

The application also provides an automobile, the side of the automobile door is provided with an upper handrail, and the automobile door is provided with the automobile additional door lock, which is positioned beside the upper handrail.

In a more preferred embodiment, when the fixing case is installed inside a door of an automobile, the door inner panel of the automobile is provided with grooves identical to the sliding grooves and the entrance grooves at positions corresponding to the sliding grooves and the entrance grooves.

In a more preferred embodiment, the bolt and the upper armrest have a gap of 2-5mm when the door attachment door lock is mounted to the door and in a locked condition.

The beneficial effects that technical scheme that this application provided brought include:

the utility model provides an additional lock of door and car, through installing fixed box on the door, utilize the sliding tray on the fixed box to restrict the slip of lock body, the backstop board when the lock body passes the entry groove back gliding, when the bottom, the spring bolt of lock body bottom and fixed box or door form pincerlike structure, form the interference with the handrail of getting on the bus from both sides, prevent that the door from opening. In general, the cab of a large truck has a higher ground clearance, and in order to facilitate the entrance and exit of the cab, a boarding handrail is generally arranged besides steps. The position of the armrest is arranged on the inner side of the vehicle door and is used for climbing when a driver enters the cab. When the door is closed, the armrest is very close to the door. The handrail is made of steel pipe coated plastic, and two ends are flattened to facilitate installation. For easy holding, the outside diameter of the handrail is more than 16mm, and the handrail has enough mechanical strength. After the inside of the vehicle door is locked, the mechanical strength of the whole additional door lock is far superior to that of the existing mechanical door lock, accidents caused by rest of a driver can be effectively prevented, and meanwhile, the installation is very simple, and the vehicle structure is not required to be changed greatly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an embodiment in the present application.

Fig. 2 is a schematic view of the structure of the back side of the embodiment shown in fig. 1.

Fig. 3 is a schematic view of the structure of fig. 1 after the lock body is partially removed.

Fig. 4 is a schematic view of the structure of the locking bolt in the embodiment shown in fig. 1.

Fig. 5 is a schematic structural view of a lock body portion in the embodiment shown in fig. 1.

Fig. 6 is a cross-sectional view of fig. 5.

Fig. 7 is a schematic view of the structure of the lock body just inserted into the fixing case.

Fig. 8 is a schematic view of the structure when the lock body is slid to the bottom end.

Fig. 9 is a schematic view of a structure when the lock body and the fixing case are fixed by the locking bolt.

Reference numerals:

1. a fixed box; 11. a sliding groove; 12. an inlet slot; 13. a lock hole; 14. a fixing nut; 2. a lock body; 21. a bolt; 22. a connection part; 23. a stop plate; 24. locking a channel; 241. a first channel; 242. a second channel; 3. a locking bolt; 31. a first retainer ring; 32. a bolt rod; 33. butterfly-shaped end heads; 4. and (3) a vehicle door.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

Conventional vehicles prevent unauthorized persons from opening the door from the outside through the door lock. Normally, unlocking the door lock from the outside requires unlocking the door using a mechanical key or a key fob. But the mechanical lock can be destroyed by using a tool, and the electronic lock can intercept an electronic signal sent by the remote controller by using a decoder, which is equivalent to copying a key of a car owner, so that the car door can be opened, and potential safety hazards exist.

The embodiment of the additional door lock of the automobile is provided, and the additional door lock of the automobile is small in size, convenient to install and free of association with the structure outside the automobile door, so that an occupant cannot damage a lock body by an external means when resting in the automobile, and the driving safety of the automobile owner is protected as much as possible.

The embodiment specifically comprises a fixed box 1 and a lock body 2. As shown in fig. 1, the embodiment is mainly applied to an automobile with a boarding handrail, the main type is a commercial vehicle, the handrail is made of steel pipe plastic coating, and two ends of the handrail are flattened to facilitate installation. The outside diameter of the handrail is above 16mm, so the handrail has enough mechanical strength and enough strength for bearing the locking function.

The fixing box 1 is a flat box, the shape of which can be seen in fig. 2, 7, 8 and 9, the upper end and the lower end of the fixing box 1 are not sealed in some cases, the fixing box 1 mainly provides a mounting base, and the fixing box 1 is usually required to be mounted on the vehicle door 4 in advance when the embodiment is implemented. One side of the stationary box 1 is provided with a key-shaped slot, see fig. 3, in which an elongated and vertical slot is a sliding slot 11, one end of the sliding slot 11 being enlarged to form an inlet slot 12.

The lock body 2 is generally a square block, and can be seen in fig. 5, and is made of a material with a large specific gravity, such as a metal ingot, so as to provide enough weight to prevent other people from shaking the door 4 outside to unlock the door. The bottom of the lock body 2 protrudes downwards to form the lock tongue 21, in general, in order to facilitate the use by the driver, the size of the lock body 2 is as small as possible under the condition of meeting the requirement, and in order to avoid serious interference with the armrest of the vehicle door 4, the lock tongue 21 is as close to the edge as possible. One surface of the lock body 2 is provided with a stop plate 23, and the stop plate 23 is connected with the lock body 2 through a connecting part 22. Specifically, in the embodiment shown in fig. 5, the stopper plate 23 is circular in shape, corresponding to the inlet groove 12, while in the general embodiment, the size of the inlet groove 12 is enlarged by a little in proportion to facilitate the entry of the stopper plate 23 into the inlet groove 12. The connecting portion 22 is generally cylindrical, and the diameter is equal to or slightly smaller than the width of the sliding groove 11, so that the connecting portion 22 can slide in the sliding groove 11, and in some embodiments, in order to prevent the lock body 2 from rotating, the connecting portion 22 is also configured into a square column structure, at this time, the width of the connecting portion 22 is matched with the width of the sliding groove 11, and the rotation of the connecting portion 22 is limited by the sliding groove 11, so that the lock body 2 cannot rotate, thereby improving the security of the lock body 2. The size of the stopper plate 23 is much larger than the sliding groove 11 so that the stopper plate 23 cannot escape from the sliding groove 11.

When the lock is used, the stop plate 23 on the lock body 2 firstly stretches into the entrance groove 12, and slides along the sliding groove 11 after the stop plate is slid, when the stop plate slides to the bottom, according to the installation position and the size of the fixed box 1, two conditions exist, one condition is that the fixed box 1 is installed on the surface of the inner plate of the car door 4, the size is long, a cavity for accommodating the car handrail is formed between the fixed box 1 and the lock tongue 21, the other condition is that the fixed box 1 is installed inside the car door 4, or the fixed box 1 is installed on the surface of the inner plate of the car door 4, the size is short, and a cavity for accommodating the car handrail is formed between the inner plate of the car door 4 and the lock tongue 21. The upper armrest is positioned in the cavity, and when the door 4 is opened from the outside, the lock tongue 21 can be abutted against the upper armrest, so that the door 4 can not be opened, and the safety is ensured.

Through installing fixed box 1 on door 4, utilize the sliding tray 11 on fixed box 1 to restrict the slip of lock body 2, when the end baffle 23 of lock body 2 passes entry groove 12 back gliding, when sliding to the bottom, the spring bolt 21 of lock body 2 bottom and fixed box 1 or door 4 form pincerlike structure, hold the car handrail from both sides, prevent that door 4 from opening, simultaneously because the structure of whole car additional door lock and outside part nothing are related, this makes outside personnel all unable to open the car door from outside the car unless adopting the violent destruction means.

So that after the inside of the vehicle door 4 is locked, the mechanical strength of the whole additional door lock is far superior to that of the existing mechanical door lock, accidents caused by rest of a driver can be effectively prevented, and meanwhile, the installation is very simple, and the vehicle structure is not required to be changed greatly.

In general, when the additional door lock of the automobile is used, the automobile is in a stop state, and a driver takes a rest in a cab. In some cases, after the driver wakes up, the driver can directly drive without unlocking the additional door lock of the automobile, and at this time, the additional door lock of the automobile collides with the automobile door 4 along with jolt of the automobile, so that certain noise is generated, and driving experience is affected.

Thus in some preferred embodiments, see fig. 1, 6 and 7, the lock body 2 is further provided with a lock channel 24. The fixing box 1 is provided with a locking hole 13, and the embodiment also provides a locking bolt 3, when a passenger needs to lock, the locking channel 24 can be aligned with the locking hole 13, the locking bolt 3 is screwed down, and the locking bolt 3 has smaller thickness generally, so that the locking bolt 3 can generate a biting force, and in some embodiments, the inner wall of the locking hole 13 also can etch some threaded holes so as to facilitate the locking of the locking bolt 3. Correspondingly, when the lock channel 24 is aligned with the lock hole 13, the lock body 2 is also at the lowest end of the sliding groove 11. On the one hand, can improve the connectivity between lock body 2 and the door 4 when locking, prevent that lock body 2 from being disassembled by violent, on the other hand can fix lock body 2 on fixed box 1, prevent to produce various rocking in the course of traveling.

Since the fixing case 1 is a relatively airtight structure, it is difficult to judge whether the locking bolt 3 is screwed in place or not without seeing the internal structure when the locking bolt 3 is used.

Thus, in some preferred embodiments, as shown in fig. 4, the locking bolt 3 is circumferentially sleeved with a first retainer ring 31, and the size of the first retainer ring 31 is obviously larger than that of the thread of the locking bolt 3, so that when the first retainer ring 31 is blocked on the locking hole 13, a user cannot continue to screw in the bolt, and thus the user can feel that the locking is in place. In such an embodiment, at least a portion of the lock channel 24 is sized and shaped to mate with the retainer such that the retainer slides within the lock channel 24 to avoid interference with the use of the locking bolt 3.

The bolt is a cylindrical threaded fastener matched with a nut, and consists of a head part and a cylinder with external threads, in some embodiments, the locking bolt 3 is a common bolt with a mushroom head or a hexagonal bolt, an operator can screw the locking bolt by means of a tool when using the locking bolt, and the locking bolt is inconvenient to use, on the other hand, because the locking bolt 3 is not limited, a user often takes down the whole locking bolt 3, or sometimes the locking bolt 3 is loose and falls down because of bumping of a vehicle, so that the locking bolt 3 is lost, and the use of the additional door lock provided by the application is affected.

Thus, in some preferred embodiments, as shown in fig. 4 and 6, first, the lock channel 24 is divided into a first channel 241 and a second channel 242, the opening of the second channel 242 is directed to the fixed case 1, and the diameter of the second channel 242 is larger than that of the first channel 241, thus forming a stepped structure.

The locking bolt 3 is divided into a bolt shaft 32 and a butterfly end 33, the first retainer ring is disposed in the circumferential direction of the bolt shaft 32, and the butterfly end 33 is connected to the bolt shaft 32.

The second channel 242 is slidably connected with the first baffle ring, and the bolt rod 32 between the first channel 241 and the first baffle ring and the butterfly end 33 is slidably connected, so that a limiting device is formed between the first baffle ring and the butterfly end 33, so that the whole locking bolt 3 is relatively fixed on the lock body 2, and the locking bolt 3 is prevented from loosening and losing. The butterfly end 33 and the bolt rod 32 are detachably connected by using a connecting piece, so that the locking bolt 3 is conveniently detached, and the accessory is replaced.

In general, the distance between the butterfly end 33 and the first retainer ring 31 is only required to be larger than the distance that the locking bolt 3 needs to be screwed in, but some distance between the butterfly end 33 and the lock body 2 is often caused to be unable to be screwed in, and an operator unconsciously thinks that the locking bolt 3 is not screwed well and continues to be screwed in during use, so that the locking bolt 3 is damaged.

Thus in some preferred embodiments, as shown in figures 7-9, the distance from the bottom surface of the butterfly-shaped end head 33 to the side of the first collar 31 adjacent to the fixed box 1 is equal to the length of the locking channel 24. Therefore, when the locking bolt 3 is just screwed, the butterfly-shaped end 33 is attached to the surface of the lock body 2, so that misunderstanding of operators is avoided, and the use experience is improved.

In some cases, the locking bolt 3 is only connected with the locking hole 13 on the fixed box 1, and when the fixed box is used for a long time, the door is opened and closed in a locking state, which can lead to deformation of one surface of the fixed box 1 provided with the locking hole 13, finally damage the fixed box 1 and can not be locked.

Thus in some preferred embodiments, a fixation nut 14 is further provided at the edge of the locking hole 13, said fixation nut 14 being coaxial with the locking hole 13 and the internal thread of said fixation nut 14 and the internal thread of said locking hole 13 transitioning smoothly. Specifically, in this embodiment, as shown in fig. 2 and fig. 7-9, the fixing nut 14 is welded on the outer edge of the locking hole 13, and the inner diameter of the fixing nut 14 is equal to the locking hole 13. This makes the locking bolt 3 smoothly screw in the fixing nut 14 from the locking hole 13, the fixing nut 14 has a strong structural strength, and is difficult to deform, and even after the side wall of the fixing box 1 bulges or is sunken, the position of the fixing nut 14 is not changed greatly, so long as the locking bolt 3 is connected with the fixing nut 14, the effective locking function can be achieved. In some embodiments, it is considered that the fixing nut 14 has a stronger connecting force, and the size of the locking hole 13 is larger than that of the locking bolt 3, so that the matching between the locking bolt 3 and the locking hole 13 is reduced, so that the fixing box 1 can be conveniently stretched into the locking hole 13 to match with the fixing bolt after being deformed, and the service life is prolonged.

The position of the upper handrail is often the position where personnel frequently move, the personnel are easy to be bumped by the additional door lock of the automobile when moving, and sometimes the passengers are easy to be bumped when the lock body 2 is detached and not arranged. Thus, in some preferred embodiments, the outer surfaces of the lock body 2 and locking bolt 3 are coated with a soft coating, which may be rubber, polyvinyl chloride, and other engineering materials, to reduce accidental damage to the occupants during movement.

The present application also provides an embodiment of an automobile, as shown in fig. 1, where the door 44 of the automobile is provided with the additional door lock of the automobile according to the foregoing embodiment. Specifically, the automobile needs to have a certain installation space near the upper handrail, and the automobile door 4 is best provided with a certain cavity as shown in fig. 1, so that the fixing box 1 which needs to be installed in a complex manner can be protected in the automobile door 4, the external collision is reduced, the service life is prolonged, and the aesthetic degree of the interior decoration of the automobile is improved. The car must also have a loading arm rest, which, in particular, is of a general specification in the field, has an outer diameter of more than 16mm, and at the same time is to be located beside the door 4, so that an additional door lock of the car can be engaged with the loading arm rest.

In general, the fixing case 1 is directly mounted on the surface of the inner panel of the door 4, and in some preferred embodiments, the fixing case 1 is disposed inside the door 4 for the sake of interior aesthetic appearance and for the purpose of protecting the fixing case 1, and in this case, the door 4 is provided with a groove identical to the sliding groove 11 and the entrance groove 12, so that the connecting portion 22 and the stop plate 23 pass.

In the actual driving process, the automobile generally generates jolting, in particular to a commercial vehicle with larger cargo capacity. In general, the additional door lock of the automobile is considered to reduce the openable width of the door 4 as much as possible when locking, so that the lock tongue 21 is located as close to the boarding handrail as possible, and in a bumpy environment, this condition easily causes the lock tongue 21 to strike the boarding handrail, thereby generating unpleasant noise. Thus in some preferred embodiments, the clearance between the tongue 21 and the boarding handrail is between 2-5mm when in the locked condition. Specifically, there are various adjustment modes, for example, a lock body 2 with different sizes is used, a pad is added between the lock body 2 and the vehicle door 4, the installation position of the upper handrail is adjusted, and the like, and the locking effect and the noise preventing effect can be simultaneously considered.

Our application is further described below with respect to the embodiments illustrated in fig. 1-9.

In this embodiment, the lock device includes a fixing case 1, a lock body 2, a lock bolt 3, and an inner panel of a door 4.

Specifically, the fixed box 1 is a flat square box, the upper end and the lower end of the fixed box are open, the fixed box is installed in the door 4 and is clung to the inner plate of the door 4, a key-shaped groove is formed in the side face of the fixed box 1, the slender part of the fixed box is a sliding groove 11, one end of the sliding groove 11 is expanded to form an inlet groove 12, and the same groove is formed in the inner plate of the door 4 so as to allow the lock body 2 to pass through. The side of the fixed box 1, which is far away from the lock body 2, is provided with a lock hole 13, and a fixed nut 14 with the inner diameter equivalent to the lock hole 13 is welded outside the lock hole 13.

The lock body 2 is of a square structure, one side of the bottom of the lock body protrudes outwards to form a lock tongue 21, one surface of the lock tongue 21 is close to one surface of the fixed box 1 and is in rounded transition with the lock body 2, and the other three surfaces are coplanar with the lock body 2. The latch tongue 21 and the lock body 2 are made of a material having a large specific gravity, such as cast iron, to provide a sufficient weight to prevent others from shaking the door 4 outside to cause unlocking.

The lock body 2 is also provided with a stop plate 23 and a lock channel 24, and the lock channel 24 and the stop plate 23 are respectively positioned at two ends of the lock body 2. The stop plate 23 and the lock body 2 are connected through the connecting part 22, the shape of the stop plate 23 is the same as that of the inlet groove 12, the size is slightly smaller than that of the inlet groove 12, the connecting part 22 is matched with the width of the sliding groove 11, so that the connecting part 22 can slide in the sliding groove 11, and the stop plate 23 prevents the lock body 2 from being separated from the fixed box 1.

The locking channel 24 is divided into a first channel 241 and a second channel 242, the opening of the second channel 242 is directed to the fixed box 1, and the diameter of the second channel 242 is larger than that of the first channel 241, thus forming a stepped structure.

The locking bolt 3 comprises a bolt rod 32, a first check ring 31 sleeved outside the bolt rod 32 and a butterfly-shaped end head 33 arranged at one end of the bolt rod 32, wherein the bolt rod 32 between the first check ring 31 and the butterfly-shaped end head 33 is not threaded, and threads matched with the fixing nut 14 and the lock hole 13 are arranged on the bolt rod 32, which is positioned in the direction of the first check ring 31 away from the butterfly-shaped end head 33. When the locking bolt 3 is mounted on the lock body 2, the first retainer ring 31 is slidably arranged in the second slide way, the bolt rod 32 between the butterfly end 33 and the first retainer ring 31 is slidably arranged in the first slide way, and meanwhile, the butterfly end 33 and the first retainer ring 31 form a limiting structure for the lock body 2 from two sides, so that the locking bolt 3 is prevented from falling out. The distance from the bottom surface of the butterfly-shaped end head 33 to the surface of the first retainer ring 31 close to the fixed box 1 is equal to the length of the lock channel 24. Thus, when the lock bolt 3 is just screwed, the butterfly-shaped end 33 is attached to the surface of the lock body 2.

As shown in fig. 1, the additional door lock for the automobile according to the foregoing embodiment is mounted on the door 44 of the automobile. Specifically, the automobile needs to have a certain installation space near the upper handrail, and the automobile door 4 is best provided with a certain cavity as shown in fig. 1, so that the fixing box 1 which needs to be installed in a complex manner can be protected in the automobile door 4, the external collision is reduced, the service life is prolonged, and the aesthetic degree of the interior decoration of the automobile is improved. The car must also have a loading arm rest, which, in particular, is of a general specification in the field, has an outer diameter of more than 16mm, and at the same time is to be located beside the door 4, so that an additional door lock of the car can be engaged with the loading arm rest.

In use, first, as shown in fig. 7, the stopper plate 23 on the lock body 2 is first extended from the inlet slot 12 into the fixed box 1.

Then, as shown in fig. 8, the lock body 2 is slid down to the bottom end along the sliding groove 11, and the second passage 242 is faced to the lock hole 13, and the locking bolt 3 is faced to the fixing nut 14.

Finally, as shown in fig. 9, the butterfly-shaped tip 33 is screwed, and the threaded rod is screwed into the fixing nut 14. At this time, a boarding handrail is formed between the lock tongue 21 and the door 4

Generally, in order to facilitate the use by the driver, the lock body 2 is as small as possible under the condition of meeting the requirement, so as to avoid serious interference with the boarding handrail 41, the lock tongue 21 is as close to the edge as possible, and the additional door lock of the automobile is locked by considering the reduction of the opening width of the door 4 as much as possible, so that the lock tongue 21 is as close to the boarding handrail as possible, and meanwhile, the automobile is generally bumpy in the actual running process, so that the lock tongue 21 is easy to strike the boarding handrail 41, and unpleasant noise is generated, so that a gap of 2mm is formed between the lock tongue 21 and the boarding handrail.

By installing the fixed box 1 on the car door 4, the sliding of the lock body 2 is limited by utilizing the sliding groove 11 on the fixed box 1, when the stop plate 23 of the lock body 2 passes through the entrance groove 12 and then slides downwards, when the lock body slides to the bottom end, the lock tongue 21 at the bottom of the lock body 2 and the fixed box 1 or the car door 4 form a pincer-shaped structure, and interference is formed between two sides and the upper car handrail, so that the car door 4 is prevented from being opened.

So that after the inside of the vehicle door 4 is locked, the mechanical strength of the whole additional door lock is far superior to that of the existing mechanical door lock, accidents caused by rest of a driver can be effectively prevented, and meanwhile, the installation is very simple, and the vehicle structure is not required to be changed greatly.

The present application is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that modifications and variations can be made without departing from the principles of the present invention, and such modifications and variations are also considered to be within the scope of the present invention.

In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

It should be noted that in this application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. An additional door lock for a motor vehicle having an upper armrest (41), comprising:

a fixed box (1) used for being installed on an automobile door (4) to provide an installation foundation, wherein one surface of the fixed box is provided with a sliding groove (11), and one end of the sliding groove (11) is expanded to form an inlet groove (12);

the lock body (2) protrudes outwards from the end face part of one end far away from the inlet groove (12) to form a lock tongue (21), one surface of the lock body (2) close to the fixed box (1) is provided with a stop plate (23) with the shape matched with the inlet groove (12), and the stop plate (23) is connected with the lock body (2) through a connecting part (22) with the size matched with the width of the sliding groove (11);

when the additional door lock of the automobile is arranged on the automobile door (4) and the additional door lock of the automobile door (4) is in a locking state, the stop plate (23) and the lock body (2) are positioned on the inner side and the outer side of the sliding groove (11), the connecting part (22) is abutted against one end of the sliding groove (11) far away from the inlet groove (12), and a cavity for accommodating an upper handrail (41) is formed between the lock tongue (21) and the fixed box (1) or between the lock tongue (21) and the automobile door (4);

the lock body (2) is also provided with a lock channel (24);

the fixed box (1) is also provided with a lock hole (13)

The additional door lock of the vehicle door (4) further comprises a locking bolt (3);

when the additional door lock of the vehicle door (4) is in a locking state, the locking bolt (3) passes through the locking channel (24) to be in threaded connection with the locking hole (13).

2. An automotive accessory door lock as claimed in claim 1, wherein:

the locking bolt (3) is circumferentially provided with a first retainer ring (31).

3. An additional door lock for a motor vehicle according to claim 2, wherein,

the lock channel (24) comprises a first channel (241) and a second channel (242) which are communicated with each other, wherein the inner diameter of the second channel (242) is larger than that of the first channel (241) and the second channel (242) is opened towards the fixed box (1);

the locking bolt (3) comprises:

the first check ring (31) is circumferentially arranged on the outer wall of the bolt rod (32);

the butterfly-shaped end head (33) is arranged at one end, far away from the fixed box (1), of the bolt rod (32), the outer diameter of the butterfly-shaped end head (33) is larger than that of the bolt rod (32), and the butterfly-shaped end head (33) and the bolt rod (32) are detachably connected through a connecting piece;

part of the bolt rod (32) is arranged in the first channel (241) in a sliding way, and the first check ring (31) is arranged in the second channel (242) in a sliding way.

4. An additional door lock for vehicles according to claim 3, characterized in that the distance from the bottom surface of the butterfly-shaped end (33) to the side of the first collar (31) close to the fixed box (1) is equal to the length of the locking channel (24).

5. An automotive accessory door lock as claimed in claim 1, wherein: the edge of the lock hole (13) is also provided with a fixing nut (14), and the fixing nut (14) is coaxial with the lock hole (13).

6. An automotive accessory door lock as claimed in claim 1, wherein: the outer surfaces of the lock body (2) and the locking bolt (3) are provided with soft coatings for preventing bruise.

7. An automobile, characterized in that an upper handrail (41) is arranged beside a door (4) of the automobile, and an additional door lock of the automobile according to any one of claims 1-6 is arranged on the door (4) of the automobile, and the additional door lock of the automobile is arranged beside the upper handrail (41).

8. An automobile according to claim 7, characterized in that, when the fixing case (1) is mounted inside the door (4) of the automobile, the door (4) of the automobile is provided with grooves identical to the sliding groove (11) and the inlet groove (12) at positions corresponding to the sliding groove (11) and the inlet groove (12) on the inner panel.

9. An automobile according to claim 7, wherein: when the additional door lock of the vehicle door (4) is installed on the vehicle door (4) and is in a locking state, a gap of 2-5mm is reserved between the lock tongue (21) and the upper handrail (41).