CN217581694U - Door lock for child safety guard - Google Patents

Abstract

An automobile door lock for children comprises a lock body base, an upper mounting groove and a lower mounting groove, wherein the upper mounting groove is formed in the upper surface of the lock body base, the lower mounting groove is formed in the lower surface of the lock body base, a lock body upper cover covers the upper mounting groove, an upper cover plate covers the lower end of the lower mounting groove, a sliding-in groove communicated with the lower mounting groove is formed in the rear side of the upper cover plate, a clamping plate is hinged to the bottom of the lower mounting groove, a clamping groove is formed in the right rear side of the clamping plate, a latch hook corresponding to the position of the clamping plate is hinged to the bottom of the lower mounting groove, an internal pulling wire connector is arranged on the right side of the upper surface of the lock body upper cover, and the internal pulling wire connector is communicated with the inner space of the lock body upper cover; a first hinge shaft is arranged at the right part of the inner wall of the front side of the lock body base; the first articulated shaft is hinged with an inner pull opening plate and an inner pull linkage arm positioned at the front side of the inner pull opening plate. The utility model discloses a child prevents that car door lock can prevent effectively that children from opening the condition of car door lock through the mode of interior pulling when the car door lock locking, effectively stops the potential safety hazard.

Description

Door lock for child safety guard

Technical Field

The utility model relates to a door lock, especially a child prevents door lock.

Background

The door lock is a device that can control the door and lock and open, car door frame border all can be provided with one with the corresponding hasp in door lock position, when closing the door, the hasp then can directly slide in the sliding tray of door lock, and slide in the draw-in groove of cardboard in the same place, under the effect of hasp pressure, the cardboard takes place rotatoryly, the notch orientation of draw-in groove changes, the notch of draw-in groove staggers with the orientation in slide groove, the cardboard then can drive the latch hook through the extruded mode and take place to rotate simultaneously, make latch hook one end card in the draw-in groove notch of latch fitting, the latch hook tip restricts the hasp in the draw-in groove this moment, thereby play the effect of locking.

In the practical use process, in order to ensure the safety of people in the automobile, when the door lock is in a locked state, the door lock cannot be opened outside the automobile in an outward pulling mode, but can be opened in the automobile in an inward pulling mode, so that the people in the automobile always take the initiative, and danger is avoided.

Disclosure of Invention

The utility model aims to solve the current technical problem and provide a child car door lock, it can effectively prevent children from opening the condition of car door lock through the mode of interior drawing when the car door lock locking, effectively stops the potential safety hazard.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

the utility model discloses a child car door lock, including the lock body base, locate the last mounting groove of lock body base upper surface and locate the lower mounting groove of lock body base lower surface, it has the lock body upper cover to go up the mounting groove dustcoat, and lower mounting groove lower extreme slot cover has the upper cover plate, and the upper cover plate rear side is equipped with the slip-in groove that link up mutually with lower mounting groove, and lower mounting groove tank bottom articulates there is the cardboard, and cardboard right side rear side is equipped with the draw-in groove, and lower mounting groove tank bottom articulates there is the latch hook corresponding with the cardboard position, its characterized in that: an inner pulling wiring joint is arranged on the right side of the upper surface of the lock body upper cover and is communicated with the inner space of the lock body upper cover; a first hinge shaft is arranged at the right part of the inner wall of the front side of the lock body base; the first articulated shaft is hinged with an inner pull opening plate and an inner pull linkage arm positioned at the front side of the inner pull opening plate; an inner pull arm is arranged at the upper part of the side wall of the right side of the inner pull opening plate; the lower part of the side wall of the right side of the internal pulling opening plate is provided with a limiting part; the limiting part, the inner pull arm and the right side wall of the inner pull opening plate are enclosed to form a linkage groove; an inner pull linkage block is arranged on the front side of the inner pull opening plate; the inner pull linkage block is provided with a moving hole, and the right end of the inner pull linkage arm passes through the moving hole rightwards; a boss clamped in the linkage groove is arranged on the side wall of the rear side of the inner pull linkage block; a child-proof switch mechanism matched with the inner pull linkage block is arranged on the front side of the lock body base; the right end of the inner pull arm is provided with an inner pull wire connecting hole, the right end of the inner pull arm is connected with an inner pull wire through the inner pull wire connecting hole, and the inner pull wire penetrates out of the lock body upper cover through the inner pull wire connector.

The anti-switching mechanism comprises a long circular hole arranged on the side wall of the front side of the lock body base, and the long circular hole is arc-shaped and communicated with the inner space of the upper mounting groove; the side wall of the front side of the lock body base is provided with a first hinge hole communicated with the inner space of the upper mounting groove; a rotating plate is arranged on the front side of the lock body base; a second hinge shaft matched with the first hinge hole is arranged on the side wall of the rear side of the rotating plate; an inner poke rod corresponding to the position of the long round hole is arranged on the side wall of the rear side of the rotating plate; the side wall of the front side of the inner pulling linkage block is provided with an arc-shaped poking groove, and the rear end of the inner poking rod backwards penetrates through the long round hole and penetrates into the poking groove; an outer poke rod coaxial with the inner poke rod is arranged on the side wall of the front side of the rotating plate.

An external pull opening is formed in the right part of the side wall of the rear side of the lock body base; a third hinge shaft is arranged at the right part of the bottom of the upper mounting groove; the third hinge shaft is hinged with an external pulling opening arm and an external pulling linkage arm positioned above the external pulling opening arm; the lower surface of the front part of the outer pull linkage arm is provided with an extension column; the front end of the external pulling opening arm is provided with a pushing part positioned on the left side of the extension column; an arc-shaped groove is formed between the pushing part and the outer pull opening arm; a fourth articulated shaft is arranged on the upper surface of the front part of the external pulling linkage arm; the fourth articulated shaft is articulated with an outward-pulling swing arm; an outer pull linkage block is arranged on the side wall of the front side of the left end of the outer pull swing arm; a fifth articulated shaft is arranged on the lock body base; the lower end of the fifth hinge shaft penetrates into the lower mounting groove downwards and is hinged with the latch hook; the upper end of the fifth articulated shaft penetrates into the upper mounting groove upwards and is hinged with a latch hook linkage arm; the upper surface of the rear end of the latch hook is provided with a limiting hole; the lower surface of the latch hook linkage arm is provided with a limiting rod matched with the limiting hole; the upper surface of the rear part of the latch hook linkage arm is provided with a touch table positioned on the right side of the external pull linkage block; the upper surface of the middle part of the outward pulling swing arm is provided with a convex part; and a pressure arm extends downwards from the left end of the inner pull linkage arm, and the lower end of the pressure arm is positioned on the left side of the bulge.

A clamping round platform with a wide front part and a narrow back part is arranged on the outer wall of the rear end of the second hinge shaft and is attached to the inner wall of the front side of the upper mounting groove; an elastic hole is formed in the center of the rear end face of the second hinged shaft; the rear end face of the second articulated shaft is provided with a plurality of elastic notches which are uniformly distributed in the circumferential direction, and the elastic notches are communicated with the elastic holes.

The left side and the right side of the inner poking rod are provided with anti-collision strips which are symmetrical to each other.

The side wall of the front side of the lock body base is provided with an auxiliary port communicated with the inner space of the upper mounting groove, and the auxiliary port is positioned on the left side of the first hinge hole; and an auxiliary arm matched with the auxiliary opening is arranged on the side wall of the rear side of the rotating plate.

The beneficial effects of the utility model are that:

compared with the prior art, adopt the utility model discloses the child prevents that car door lock of structure can pass through child and prevent that on-off mechanism makes interior linkage piece drive the boss and take place to remove, along with the boss leaves the linkage groove, interior pull is opened the board and then can't drive interior pull linkage arm and takes place rotatoryly to avoid the rotation of latch hook, make latch hook tip block in the draw-in groove notch of cardboard all the time, the car door lock remains the state of locking all the time, effectively avoid children to open the car door lock in the car and cause unexpected condition in dangerous moment, effectively stop the potential safety hazard.

Drawings

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

FIG. 2 is a schematic view of the door lock of the present invention shown at an angle after the lock body cover is removed;

FIG. 3 is a schematic view of the door lock of the present invention at another angle after the lock body cover is removed;

FIG. 4 is a schematic view of the door lock of the present invention with the upper cover removed;

FIG. 5 is a schematic view of the inner portion of the door lock of the present invention at an angle;

FIG. 6 is a schematic view of another angle of the interior of the door lock of the present invention;

fig. 7 is a partial schematic view of the door lock of the present invention.

Detailed Description

The invention is described in further detail below with reference to the following figures and detailed description:

referring to fig. 1 to 7, the present invention provides a child car door lock, including a lock body base 1, an upper mounting groove 2 disposed on the upper surface of the lock body base 1 and a lower mounting groove 3 disposed on the lower surface of the lock body base, wherein the upper mounting groove 2 is covered with a lock body upper cover 4, the lower end of the lower mounting groove 3 is covered with an upper cover plate 5, the rear side of the upper cover plate 5 is provided with a slide-in groove 6 communicated with the lower mounting groove 3, the bottom of the lower mounting groove 3 is hinged with a snap-gauge 7, the right rear side of the snap-gauge 7 is provided with a snap-gauge 8, the bottom of the lower mounting groove 3 is hinged with a latch hook 9 corresponding to the position of the snap-gauge 7, the right side of the upper surface of the lock body 4 is provided with an internal pulling wire connector 11,

the internal pulling wiring connector 11 is communicated with the internal space of the lock body upper cover 4; a first articulated shaft 12 is arranged at the right part of the inner wall of the front side of the lock body base 1; an inner pull opening plate 13 and an inner pull linkage arm 10 positioned at the front side of the inner pull opening plate 13 are hinged on the first articulated shaft 12; an inner pull arm 14 is arranged at the upper part of the side wall of the right side of the inner pull opening plate 13; the lower part of the right side wall of the inner pull opening plate 13 is provided with a limiting part 15; the limiting part 15, the inner pull arm 14 and the right side wall of the inner pull opening plate 13 are enclosed to form a linkage groove 16; an inner pull linkage block 17 is arranged on the front side of the inner pull opening plate 13; a moving hole 18 is formed in the inner pull linkage block 17, and the right end of the inner pull linkage arm 10 penetrates through the moving hole 18 rightwards; a boss 19 clamped in the linkage groove 16 is arranged on the side wall of the rear side of the inner pull linkage block 17; a child-proof switch mechanism matched with the inner pull linkage block 17 is arranged on the front side of the lock body base 1; the right end of the inner pull arm 14 is provided with an inner pull wire connecting hole 20, the right end of the inner pull arm 14 is connected with an inner pull wire 78 through the inner pull wire connecting hole 20, and the inner pull wire 78 penetrates out of the lock body upper cover 4 through the inner pull wire connector 11.

The anti-opening mechanism comprises a long circular hole 21 arranged on the side wall of the front side of the lock body base 1, and the long circular hole 21 is arc-shaped and communicated with the inner space of the upper mounting groove 2; the side wall of the front side of the lock body base 1 is provided with a first hinge hole 22 communicated with the inner space of the upper mounting groove 2; a rotating plate 23 is arranged on the front side of the lock body base 1; a second hinge shaft 24 matched with the first hinge hole 22 is arranged on the side wall of the rear side of the rotating plate 23; an inner poke rod 25 corresponding to the position of the long round hole 21 is arranged on the side wall of the rear side of the rotating plate 23; an arc-shaped toggle groove 26 is formed in the side wall of the front side of the inner pull linkage block 17, and the rear end of the inner toggle rod 25 penetrates through the long round hole 21 backwards and penetrates into the toggle groove 26; the side wall of the front side of the rotating plate 23 is provided with an outer poke rod 27 which is coaxial with the inner poke rod 25.

An external pull opening 28 is formed in the right part of the side wall of the rear side of the lock body base 1; a third hinge shaft 29 is arranged at the right part of the bottom of the upper mounting groove 2; the third hinge shaft 29 is hinged with an external pulling opening arm 30 and an external pulling linkage arm 31 positioned above the external pulling opening arm 30; the lower surface of the front part of the outer pull linkage arm 31 is provided with an extension column 32; the front end of the external pulling opening arm 30 is provided with a pushing part 33 positioned at the left side of the extension column 32; an arc-shaped groove 34 is formed between the pushing part 33 and the outer pull opening arm 30; the upper surface of the front part of the outer pull linkage arm 31 is provided with a fourth articulated shaft 35; the fourth hinge shaft 35 is hinged with an outward-pulling swing arm 36; an outer pulling linkage block 37 is arranged on the side wall of the front side of the left end of the outer pulling swing arm 36; a fifth articulated shaft 38 is arranged on the lock body base 1; the lower end of the fifth hinge shaft 38 penetrates downwards into the lower mounting groove 3 and is hinged with the latch hook 9; the upper end of the fifth articulated shaft 38 upwards penetrates into the upper mounting groove 2 and is articulated with a latch hook linkage arm 39; the upper surface of the rear end of the latch hook 9 is provided with a limiting hole 40; the lower surface of the latch hook linkage arm 39 is provided with a limiting rod 41 matched with the limiting hole 40; the upper surface of the rear part of the latch hook linkage arm 39 is provided with a touch table 42 positioned on the right side of the outer pull linkage block 37; the upper surface of the middle part of the outward pulling swing arm 36 is provided with a convex part 43; a pressing arm 44 extends downwards from the left end of the inner pull linkage arm 10, and the lower end of the pressing arm 44 is positioned at the left side of the bulge 43.

A clamping round table 45 with a wide front part and a narrow back part is arranged on the outer wall of the rear end of the second hinge shaft 24, and the clamping round table 45 is attached to the inner wall of the front side of the upper mounting groove 2; an elastic hole 46 is formed in the center of the rear end face of the second hinge shaft 24; the rear end face of the second hinge shaft 24 is provided with a plurality of elastic notches 47 which are uniformly distributed on the circumference, and the elastic notches 47 are communicated with the elastic holes 46.

The left side and the right side of the inner poke rod 25 are provided with anti-collision strips 48 which are mutually symmetrical.

An auxiliary opening 49 communicated with the inner space of the upper mounting groove 2 is formed in the side wall of the front side of the lock body base 1, and the auxiliary opening 49 is positioned on the left side of the first hinge hole 22; the rear side wall of the rotating plate 23 is provided with an auxiliary arm 50 matched with the auxiliary opening 49.

The utility model discloses a use method as follows:

when the door lock needs to be opened in a vehicle through an internal pulling mode, the internal pulling arm 14 can be pulled upwards through the internal pulling wire 78, at this time, the internal pulling arm 14 can drive the internal pulling opening plate 13 to rotate upwards by taking the first hinge shaft 12 as a center, the boss 19 at the rear side of the internal pulling linkage block 17 is clamped in the linkage groove 16, therefore, when the internal pulling opening plate 13 rotates upwards, the internal pulling opening plate 13 can drive the right end of the internal pulling linkage arm 10 to rotate upwards through the boss 19, at this time, the left end of the internal pulling linkage arm 10 rotates downwards, the lower end of the pressing arm 44 at the left end of the internal pulling linkage arm 10 moves rightwards, the lower end of the pressing arm 44 is located at the left side of the bulge 43, when the lower end of the pressing arm 44 moves rightwards, the lower end of the pressing arm 44 touches the bulge 43 and pushes the bulge 43 rightwards, at this moment, the external pulling swing arm 36 rotates, the external pulling swing arm 36 pushes the touch table 42 through the external pulling linkage block 37, and finally, the rotation of the latch hook 9 is separated from the slot 8, and the slot opening effect of the internal pulling clamping plate 7 is no longer realized.

When the internal pulling mode needs to be limited so that the door lock cannot be opened, the external poking rod 27 can drive the rotating plate 23 to rotate, the rotating plate 23 rotates around the second hinge shaft 24, when the rotating plate 23 rotates, the internal poking rod 25 rotates along the arc-shaped track of the long circular hole 21, and the rear end of the internal poking rod 25 is inserted into the poking groove 26, so that when the internal poking rod 25 moves, the internal pulling linkage block 17 moves rightwards along the internal pulling linkage arm 10, the boss 19 moves rightwards and leaves the linkage groove 16, the boss 19 leaves the linkage groove 16, even if the internal pulling opening plate 13 rotates, the internal pulling opening plate 13 cannot drive the internal pulling linkage block 17 to rotate through the boss 19, the internal pulling arm 10 cannot rotate, finally, the rotation of the linkage hook 9 is avoided, the end of the latch hook 9 is always clamped in the clamping groove 8 of the clamping plate 7, the door lock always keeps a locked state, and the condition that children cannot open the door lock from the inside of the vehicle at a dangerous moment is effectively avoided, and potential safety hazards are effectively avoided.

The outer wall of the rear end of the second hinge shaft 24 is provided with a clamping round platform 45 which is wide in front and narrow in back, the clamping round platform 45 is attached to the inner wall of the front side of the upper mounting groove 2, an elastic hole 46 is formed in the center of the rear end face of the second hinge shaft 24, a plurality of elastic notches 47 which are uniformly distributed in the circumference are formed in the rear end face of the second hinge shaft 24, the elastic notches 47 are communicated with the elastic hole 46, the second hinge shaft 24 is conveniently hinged in the first hinge hole 22 due to the structure, when the second hinge shaft 24 needs to be detached from the first hinge hole 22, the clamping round platform 45 can be pressed inwards, the rear end of the second hinge shaft 24 can be retracted inwards under the action of the elastic notches 47 and the elastic hole 46, the clamping round platform 45 can be retracted into the hole in the rear end of the first hinge hole 22, the second hinge shaft 24 is pulled forwards immediately, the second hinge shaft 24 can be pulled out from the first hinge hole 22, and detachment of the second hinge shaft 24 is completed.

The left side and the right side of the inner poking rod 25 are provided with the anti-collision strips 48 which are symmetrical to each other, the anti-collision strips 48 can effectively avoid the situation that the inner poking rod 25 collides with the inner walls on the two sides of the long circular hole 21 after moving for a certain stroke, the strength of the inner poking rod 25 can be effectively increased, and the situation that the inner poking rod 25 often collides with the inner walls on the two sides of the long circular hole 21 to easily cause deformation is avoided.

The side wall of the front side of the lock body base 1 is provided with an auxiliary opening 49 communicated with the inner space of the upper mounting groove 2, the auxiliary opening 49 is positioned at the left side of the first hinge hole 22, the side wall of the rear side of the rotating plate 23 is provided with an auxiliary arm 50 matched with the auxiliary opening 49, and the existence of the auxiliary arm 50 can further ensure the stability of the rotating plate 23 when the rotating plate 23 rotates by taking the second hinge shaft 24 as the center.

Claims (6)

1. The utility model provides a child's car door lock, includes lock body base, locate the last mounting groove of lock body base upper surface and locate the lower mounting groove of lock body base lower surface, it has the lock body upper cover to go up the mounting groove dustcoat, lower mounting groove lower extreme notch lid has the upper cover plate, the upper cover plate rear side is equipped with the slip-in groove that link up mutually with lower mounting groove, lower mounting groove tank bottom articulates there is the cardboard, cardboard right side rear side is equipped with the draw-in groove, lower mounting groove tank bottom articulates there is the latch hook corresponding with the cardboard position, its characterized in that: an inner pulling wiring joint is arranged on the right side of the upper surface of the lock body upper cover and communicated with the inner space of the lock body upper cover; a first hinge shaft is arranged at the right part of the inner wall of the front side of the lock body base; an inner-pull opening plate and an inner-pull linkage arm positioned on the front side of the inner-pull opening plate are hinged to the first hinge shaft; an inner pull arm is arranged at the upper part of the side wall of the right side of the inner pull opening plate; the lower part of the side wall of the right side of the inner pull opening plate is provided with a limiting part; the limiting part, the inner pull arm and the right side wall of the inner pull opening plate are enclosed to form a linkage groove; an inner pull linkage block is arranged on the front side of the inner pull opening plate; the right end of the inner pulling linkage arm passes through the moving hole rightwards; the side wall of the rear side of the internal pulling linkage block is provided with a boss clamped in the linkage groove; a child-proof switch mechanism matched with the inner pull linkage block is arranged on the front side of the lock body base; the right end of the inner pull arm is provided with an inner pull wire connecting hole, the right end of the inner pull arm is connected with an inner pull wire through the inner pull wire connecting hole, and the inner pull wire penetrates out of the lock body upper cover through the inner pull wire connector.

2. A child security door lock according to claim 1, wherein: the anti-switching mechanism comprises a long circular hole arranged on the side wall of the front side of the lock body base, and the long circular hole is arc-shaped and communicated with the inner space of the upper mounting groove; the side wall of the front side of the lock body base is provided with a first hinge hole communicated with the inner space of the upper mounting groove; a rotating plate is arranged on the front side of the lock body base; a second hinge shaft matched with the first hinge hole is arranged on the side wall of the rear side of the rotating plate; an inner poke rod corresponding to the long circular hole is arranged on the side wall of the rear side of the rotating plate; the side wall of the front side of the inner pulling linkage block is provided with an arc-shaped poking groove, and the rear end of the inner poking rod backwards penetrates through the long round hole and penetrates into the poking groove; an outer poke rod coaxial with the inner poke rod is arranged on the side wall of the front side of the rotating plate.

3. A child security door lock according to claim 2, wherein: an external pull opening is formed in the right part of the side wall of the rear side of the lock body base; a third hinge shaft is arranged at the right part of the bottom of the upper mounting groove; the third hinge shaft is hinged with an external pulling opening arm and an external pulling linkage arm positioned above the external pulling opening arm; the lower surface of the front part of the outer pull linkage arm is provided with an extension column; the front end of the external pulling opening arm is provided with a pushing part positioned on the left side of the extension column; an arc-shaped groove is formed between the pushing part and the outer pull opening arm; the upper surface of the front part of the outer pull linkage arm is provided with a fourth articulated shaft; the fourth articulated shaft is articulated with an outward-pulling swing arm; an outer pull linkage block is arranged on the side wall of the front side of the left end of the outer pull swing arm; a fifth articulated shaft is arranged on the lock body base; the lower end of the fifth hinge shaft penetrates into the lower mounting groove downwards and is hinged with the latch hook; the upper end of the fifth articulated shaft penetrates into the upper mounting groove upwards and is hinged with a latch hook linkage arm; the upper surface of the rear end of the latch hook is provided with a limiting hole; the lower surface of the latch hook linkage arm is provided with a limiting rod matched with the limiting hole; the upper surface of the rear part of the latch hook linkage arm is provided with a touch table positioned on the right side of the outer pull linkage block; the upper surface of the middle part of the outward pulling swing arm is provided with a convex part; and a pressure arm extends downwards from the left end of the inner pull linkage arm, and the lower end of the pressure arm is positioned on the left side of the bulge.

4. A child security door lock according to claim 2, wherein: the outer wall of the rear end of the second articulated shaft is provided with a clamping round platform which is wide in front and narrow in back, and the clamping round platform is attached to the inner wall of the front side of the upper mounting groove; an elastic hole is formed in the center of the rear end face of the second hinged shaft; the rear end face of the second articulated shaft is provided with a plurality of elastic notches which are uniformly distributed in the circumferential direction, and the elastic notches are communicated with the elastic holes.

5. A child security door lock according to claim 2, wherein: the left side and the right side of the inner poking rod are provided with anti-collision strips which are symmetrical to each other.

6. A child security door lock according to claim 2, wherein: the side wall of the front side of the lock body base is provided with an auxiliary port communicated with the inner space of the upper mounting groove, and the auxiliary port is positioned on the left side of the first hinge hole; and an auxiliary arm matched with the auxiliary opening is arranged on the side wall of the rear side of the rotating plate.

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