阅读说明：本技术 一种门护板防撞卡扣、门护板安装结构及拆卸方法 (Door protection plate anti-collision buckle, door protection plate mounting structure and door protection plate dismounting method ) 是由 樊友嗣 段小草 王帆 鲁宇鹏 于 2021-05-31 设计创作，主要内容包括：本发明公开了一种门护板防撞卡扣、门护板安装结构及拆卸方法。该门护板防撞卡扣包括卡头和卡座,卡头包括扣头、扣臂、限位板和卡盘,卡座的中部设置有插孔,卡座的顶端垂直于插孔的方向上设置有贯穿的通道,通道的内部设置有可插拔式卡夹,可插拔式卡夹包括能够弹性开合的卡口部,扣头可以插入到插孔的内部,且与卡口部配合反向卡止限位,由于扣头在深入插孔的方向仍有较大的可位移量,发生碰撞时,使内饰板总成有更大的缓冲变形量,对人体进行保护。具有上述防撞卡扣的门护板安装结构,在与乘客肩部、盆骨等重要部位对应门板的位置增加防撞卡扣进行缓冲,减少人体受到的伤害。该拆卸方法针对该防撞卡扣的结构,使门护板拆卸简单。(The invention discloses a door guard plate anti-collision buckle, a door guard plate mounting structure and a door guard plate dismounting method. This door protective plate anticollision buckle includes dop and cassette, the dop includes the discount, the knot arm, limiting plate and chuck, the middle part of cassette is provided with the jack, be provided with the passageway that runs through in the direction of the top perpendicular to jack of cassette, the inside of passageway is provided with pluggable clamping, pluggable clamping is including the bayonet part that can elasticity open and shut, the discount can insert the inside of jack, and it is spacing with the reverse card end that blocks of bayonet part cooperation, because the discount still has great but displacement volume in the direction of deepening the jack, when bumping, make interior plaque assembly have bigger buffering deflection, protect the human body. The door guard plate mounting structure with the anti-collision buckle increases the anti-collision buckle to buffer at the position corresponding to the door plate at the important positions of the shoulder, the pelvis and the like of a passenger, and reduces the injury to a human body. The disassembly method aims at the structure of the anti-collision buckle, so that the door guard plate is simple to disassemble.)

1. A door protective plate anti-collision buckle comprises a clamping head (1) and a clamping seat (2), wherein the clamping head (1) comprises a buckle head (3), a limiting plate (4) and a chuck (5), the middle part of the clamping seat (2) is provided with an insertion hole (6), characterized in that the clamping head (1) also comprises a buckle arm (7) arranged between the buckle head (3) and the limiting plate (4), a through channel (8) is arranged on the top end of the clamping seat (2) in the direction vertical to the insertion hole (6), a pluggable clamp (9) is arranged in the channel (8), the pluggable clamp (9) comprises a clamping opening part (10) capable of being opened and closed elastically, the buckle head (3) can be inserted into the insertion hole (6), and the clamping opening part (10) is matched with the clamping opening part to be reversely clamped and limited, and the total length of the buckling head (3) and the buckling arm (7) is smaller than the depth of the jack (6).

2. The door panel anti-collision buckle as claimed in claim 1, wherein a first clamping groove (11) and a second clamping groove (12) capable of being clamped and limited with the clamping opening portion (10) are arranged on the main body of the buckle arm (7), the first clamping groove (11) is arranged at the joint of the buckle head (3) and the buckle arm (7), and the clamping size of the second clamping groove (12) is larger than that of the first clamping groove (11).

3. The door panel anti-collision buckle as claimed in claim 1, wherein the pluggable clamp (9) is a symmetrical structure formed by bending a single metal wire, and comprises a handheld portion (13) formed by bending the metal wire from a midpoint to two sides of a symmetry line in an inclined manner, a guide portion (14) formed by extending the tail end of the handheld portion (13) along a direction parallel to the symmetry line, a limiting portion (15) formed by bending the tail end of the guide portion (14) perpendicularly towards the symmetry line, a first limiting opening (16) formed by bending the tail end of the limiting portion (15) towards the symmetry line in an inclined manner and converging on the symmetry line to form a V-shape, a clamping opening portion (10) formed by bending the tail end of the clamping opening portion (10) towards two sides of the symmetry line in an arc manner and converging on the symmetry line to form an annular shape, and a second limiting opening (17) formed by bending the tail end of the clamping opening portion (10) towards two sides of the symmetry line in an inclined manner, an inserting end (18) formed by the tail end of the second limiting opening (17) extends along the direction of the parallel symmetry line until the tail end of the metal wire.

4. A door panel anti-collision buckle according to claim 3, wherein the inside of the channel (8) is provided with four stoppers along a circumference of the insertion hole (6), the stoppers comprise a first stopper (19) and a second stopper (20) respectively arranged at the middle parts of two side walls of the channel (8), and a third stopper (21) and a fourth stopper (22) arranged on the center line of the channel (8) in the width direction, when the pluggable clamp (9) is inserted into the channel (8), the handheld part (13) extends out of the channel (8), the guide part (14) is attached to the inner walls of the two sides of the channel (8), the limiting part (15) is closely attached to the end surfaces of the first stopper (19) and the second stopper (20), and the first limiting opening (16) clamps the end part of the third stopper (21), the annular opening of the bayonet part (10) is over against the jack (6), and the second limit opening (17) clamps the end part of the fourth stop block (22).

5. A door panel crash clip according to claim 4, characterized in that the third stop (21) and the fourth stop (22) have a slope (23) on the side of the end facing the insertion hole (6).

6. A door panel crash clip according to claim 1, characterized in that the bottom of the channel (8) is provided with a gasket (24).

7. The door panel anti-collision buckle as claimed in claim 1, wherein elastic spokes (25) are arranged at intervals around the outer edge of the chuck (5), each elastic spoke (25) comprises an elastic section (26) and an arc section (27), all the arc sections (27) are located on the same circle concentric with the chuck (5), one end of each elastic section (26) is fixed on the side surface of the chuck (5), the other end of each elastic section (26) is fixed with the arc section (27), and the arc sections (27) can be carried to elastically move along the radial direction of the chuck (5).

8. The door guard plate mounting structure using the anti-collision buckle according to any one of claims 1 to 7, comprising an interior trim plate assembly (28) and a door sheet metal (29), wherein a plurality of first buckles (30) are arranged between two side edges and a bottom edge of the interior trim plate assembly (28) and the door sheet metal (29) at intervals, the interior trim plate assembly (28) comprises an upper body (31), a middle trim plate (32) connected with the upper body (31), a lower body (33) connected with the middle trim plate (32) and a map bag (34) arranged on the lower body (33), a main body of the middle trim plate (32) is provided with a collapse energy absorption structure, one anti-collision buckle is arranged between the rear side edge of the middle trim plate (32) and the door sheet metal (29), one side of the map bag (34) is provided with an energy absorption box (35), the anti-collision buckle is arranged between the top rear side edge of the energy absorption box (35) and the vehicle door metal plate (29).

9. A door trim mounting structure according to claim 6, wherein the crush energy absorbing structure comprises a rectangular lattice structure (36) provided on the surface of the center fascia (32), the rectangular lattice structure (36) being formed by a plurality of vertically intersecting slotlines.

10. A dismounting method of the door panel mounting structure of claim 8, comprising the steps of:

the method comprises the following steps: removing screws on the interior trim panel assembly (28);

step two: opening all the first buckles (30) to expose gaps between the interior trim panel assembly (28) and the door sheet metal (29);

step three: a hook extends into the nearest edge gap of the anti-collision buckle to hang the pluggable clamp (9) and is pulled out forcibly;

step four: removing the interior trim panel assembly (28).

Technical Field

The invention relates to the field of vehicle door assembly, in particular to a door guard plate anti-collision buckle, a door guard plate mounting structure and a door guard plate dismounting method.

Background

In the new C-NCAP version, the weight of the side impact barrier is increased, and therefore, higher demands are placed on the crashworthiness of the front and rear door structures. At present, most of vehicle doors adopt injection molding structures, different modeling components are superposed and combined into an ideal vehicle door interior trim panel with a three-dimensional effect according to the principles of splicing and building blocks, a body is attached with a surface skin, then the interior trim guard plate assembly is inserted and buckled on a vehicle door metal plate by adopting common buckles, and then the vehicle door trim panel is fixed by screws. When the automobile seat is taken, the elbows of a human body are generally placed on a control panel or a handrail decorative plate connected with a middle decorative plate, the small arms are attached to the middle decorative plate, the shoulders and the chest correspond to the tail end positions of the upper body, the pelvis and the abdomen correspond to the tail end positions of the lower body, so that when side collision occurs, the parts of the human body directly collide with the parts corresponding to the interior decorative plate assembly in an extruding mode, the impact injury received is also the largest, although the existing interior decorative protective plate assembly is provided with a skin or a cushion structure for buffering, when the existing interior decorative protective plate assembly faces to larger side collision, the structural strength of the body is higher, and the passenger cannot be fully deformed and buffered and protected.

In addition, the working principle of some ordinary buckles is that the buckle dop through installing on interior trim backplate assembly warp, extrudes into the mounting hole of door panel beating, then the dop resumes to block, because the installation reason, the interference size of dop can not be too big, leads to buckle tensile properties relatively poor, probably appears becoming flexible after long-time work, the big scheduling problem of noise.

Disclosure of Invention

The invention aims to provide a door guard plate anti-collision buckle which allows a door trim panel assembly and a door sheet metal to generate larger buffer deformation during collision, a door guard plate installation structure with the anti-collision buckle, and a door guard plate dismounting method adopting the installation structure.

In order to solve the technical problem, the door protective plate anti-collision buckle comprises a clamping head and a clamping seat, wherein the clamping head comprises a fastening head, a limiting plate and a chuck, a jack is arranged in the middle of the clamping seat, the clamping head further comprises a fastening arm arranged between the fastening head and the limiting plate, a through channel is arranged at the top end of the clamping seat in a direction perpendicular to the jack, a pluggable clamping clip is arranged inside the channel, the pluggable clamping clip comprises a clamping opening portion capable of being opened and closed elastically, the fastening head can be inserted into the jack and is matched with the clamping opening portion to be clamped and limited reversely, and the total length of the fastening head and the fastening arm is smaller than the depth of the jack.

In above-mentioned door protective plate anticollision buckle, through increasing the knot arm structure at the afterbody of discount, only block in a direction behind dop and the cassette block, still have great displacement volume in the reverse direction, when using, allow interior plaque assembly and dop fixed connection's region to have more deformation spaces, thereby when the vehicle takes place the side impact, interior plaque assembly can provide bigger cushioning effect, absorbs more impact energy, reduces the impact injury that the person of taking advantage of and received.

As an improvement of the door guard plate anti-collision buckle, a first clamping groove and a second clamping groove which can be clamped and limited with the clamping opening portion are formed in the main body of the buckle arm, the first clamping groove is formed in the connecting portion of the buckle head and the buckle arm, and the clamping size of the second clamping groove is larger than that of the first clamping groove. When the buckle is installed, the bayonet part is clamped with the first clamping groove, the buckle head is in a semi-oval shape, the top surface of the buckle head is integrally clamped with the bayonet part, stronger connection strength is provided, and the problems of looseness and abnormal sound cannot occur; when the collision takes place, the person of taking the place strikes interior plaque assembly of extrusion, makes bayonet part remove second draw-in groove position block, and bayonet part is opened by bigger strutting this moment, is convenient for extract the plug-in card clamping afterwards, dismantles and repairs.

As another improvement of the door guard plate anti-collision buckle, the pluggable clamp is a symmetrical structure formed by bending a single metal wire, and comprises a handheld part formed by bending the metal wire from a midpoint to two sides of a symmetrical line in an inclined way, a guide part formed by extending the tail end of the handheld part along the direction parallel to the symmetrical line, a limiting part formed by vertically bending the tail end of the guide part towards the symmetrical line, and a limiting part formed by bending the tail end of the limiting part towards the symmetrical line in an inclined way, and converge on the symmetry line to form a V-shaped first limit opening, and bend from the tail end of the first limit opening to the two sides of the symmetry line in an arc shape, and the tail ends of the second limiting openings extend along the direction parallel to the symmetry line until reaching the insertion end formed by the tail ends of the metal wires. Adopt the better wire of toughness to buckle and make pluggable clamping, structural design is ingenious, utilizes the wire to have certain elasticity and the characteristic of stronger rigidity, can satisfy the elastic deformation demand of bayonet portion, can provide higher tensile strength again.

As a further improvement of the door guard plate anti-collision buckle, four stop blocks are arranged inside the channel along the circumference of the insertion hole, each stop block comprises a first stop block and a second stop block which are respectively arranged in the middle of two side walls of the channel, and a third stop block and a fourth stop block which are arranged on the center line of the channel in the width direction, when the pluggable clamp is inserted into the channel, the handheld part extends out of the channel, the guide part is attached to the inner walls of two sides of the channel, the limit part is tightly attached to the end surfaces of the first stop block and the second stop block, the end part of the third stop block is clamped by the first limit opening, the annular opening of the clamp opening part is opposite to the insertion hole, and the end part of the fourth stop block is clamped by the second limit opening. Through the limiting action of the four stop blocks and the side wall of the channel, the pluggable clamp is clamped in the channel due to elasticity after being inserted, and cannot be loosened or separated; when needs are extracted, the handheld portion is outwards pulled with force, the clamping opening portion is opened in the elastic range to extract, the clamping buckle is disassembled, and the clamping buckle is very convenient.

For the technical scheme that four stop blocks are arranged inside the channel along the circumference of the jack, preferably, slope surfaces are arranged on the side surfaces of the end parts, facing the jack, of the third stop block and the fourth stop block. Slope structure can be better with first spacing mouthful and the spacing mouthful of cooperation of second spacing, make bayonet part just align with the jack.

As a further improvement of the door guard anti-collision buckle, the bottom of the channel is provided with a gasket. The packing ring is fixed on the panel beating along the side a week of cassette, along with the cassette, and the packing ring laminating covers the fixed orifices at the door panel beating on the surface, plays waterproof and syllable-dividing effect.

As a further improvement of the door guard plate anti-collision buckle, elastic spokes are arranged at intervals on the periphery of the chuck, each elastic spoke comprises an elastic section and an arc section, all the arc sections are positioned on the same circle concentric with the chuck, one end of each elastic section is fixed on the side face of the chuck, and the other end of each elastic section is fixed with the corresponding arc section and can carry the arc sections to elastically move along the radial direction of the chuck. The chuck can be clamped into a circular groove of the vehicle door interior trim panel assembly through the elastic spokes, so that vibration buffering is provided, and vibration noise of the clamp is reduced.

In order to solve the technical problem, the door guard plate mounting structure using the anti-collision buckle comprises an interior trim plate assembly and a door metal plate, wherein a plurality of first buckles are arranged between two side edges and a bottom edge of the interior trim plate assembly and the door metal plate at intervals, the interior trim plate assembly comprises an upper body, a middle trim plate connected with the upper body, a lower body connected with the middle trim plate and a map bag arranged on the lower body, a collapsing energy-absorbing structure is arranged on a main body of the middle trim plate, one anti-collision buckle is arranged on the rear side edge of the middle trim plate, an energy-absorbing box is arranged on the rear side of the map bag, and one anti-collision buckle is arranged on the rear side edge of the top of the energy-absorbing box.

In the door guard plate mounting structure, the first buckle is used for positioning the periphery of the outline of the interior trim panel assembly, the first buckle is a common plastic buckle described in the background technology, the deformation energy absorption performance of the interior trim panel assembly is improved through the design of the crumpling energy absorption structure and the energy absorption box, meanwhile, the anti-collision buckle is additionally arranged on the rear side edge of the middle trim panel, the shoulder and chest regions of a human body are correspondingly protected, the anti-collision buckle is additionally arranged on the rear side edge of the top of the energy absorption box, the belly and pelvis region of a person is correspondingly protected, and the displacement and the deformation which can be generated in the high-speed side collision process of the corresponding region of the interior trim panel assembly of the vehicle door are increased, so that the impact energy is absorbed at key parts of the human body, and the human body is protected.

As an improvement of the door protection plate mounting structure, the crumple energy absorption structure comprises a rectangular grid structure arranged on the surface of the middle protection plate, and the rectangular grid structure is formed by a plurality of vertically crossed grooved lines. The latticed slots are formed on the surface of the middle decorative plate through the crossed slot lines, so that the overall strength and hardness of the interior decorative plate are reduced, the toughness is improved, the interior decorative plate is easy to deform, and the interior decorative plate can be collapsed and broken to absorb a large amount of energy when being severely impacted.

The invention discloses a method for disassembling a door protection plate mounting structure, which comprises the following steps:

the method comprises the following steps: taking down screws on the interior trim panel assembly;

step two: opening all the first buckles to enable gaps to be exposed between the interior trim panel assembly and the vehicle door metal plate;

step three: and a hook extends into the nearest edge gap of the anti-collision buckle to hang the pluggable clamping and is pulled out forcibly, the hook extends into the rear edge gap corresponding to the middle decorative plate, the anti-collision buckle on the rear side edge of the middle decorative plate is taken out, the hook extends into the rear edge gap corresponding to the top of the energy absorption box, and the anti-collision buckle on the top of the energy absorption box is taken out.

Step four: and taking down the interior trim panel assembly.

In the disassembly method, as the anti-collision buckle cannot be directly pulled out of the chuck like the first buckle, the gap left after the first buckle is pulled out is ingeniously utilized to go deep into the hook, the pluggable clamping clip is pulled out, the disassembly of the anti-collision buckle is completed, and the operation is simple and labor-saving.

In conclusion, by adopting the door guard plate anti-collision buckle and the door guard plate mounting structure, the door trim panel assembly has larger deformable amount, can effectively buffer the impact force on a human body, is not damaged, and is more firmly connected with the whole vehicle door.

Drawings

In the drawings:

fig. 1 is a schematic view of the overall structure of the anti-collision buckle of the invention.

Fig. 2 is a partially cut-away schematic view of the anti-collision buckle of the present invention.

Fig. 3 is a schematic view of a chuck structure of the present invention.

Fig. 4 is a schematic view of the chuck structure of the present invention.

FIG. 5 is a schematic diagram of a pluggable clip structure according to the present invention.

Fig. 6 is a schematic view of the overall structure of the card socket of the present invention.

Fig. 7 is a schematic diagram of a detachable card socket structure of the invention.

Fig. 8 is a schematic view of an overall splitting structure of the buckle seat of the present invention.

Fig. 9 is a schematic view of an inner side surface structure of an interior trim panel assembly of the present invention.

Fig. 10 is a schematic view of the outer side structure of the interior trim panel assembly of the present invention.

FIG. 11 is a schematic view of the inner side surface structure of the door sheet metal of the present invention.

Fig. 12 is a schematic view of the mounting boss structure of the present invention.

In the figure: 1. clamping a head; 2. a card holder; 3. buckling a head; 4. a limiting plate; 5. a chuck; 6. a jack; 7. a buckle arm; 8. a channel; 9. a pluggable card holder; 10. a bayonet part; 11. a first card slot; 12. a second card slot; 13. a hand-held portion; 14. a guide portion; 15. a limiting part; 16. a first limit port; 17. a second limit port; 18. an insertion end; 19. a first stopper; 20. a second stopper; 21. a third stopper; 22. a fourth stopper; 23. a slope surface; 24. a gasket; 25. elastic spokes; 26. an elastic section; 27. a circular arc section; 28. an interior trim panel assembly; 29. a vehicle door metal plate; 30. a first buckle; 31. an upper body; 32. a middle decorative plate; 33. a lower body; 34. a map bag; 35. an energy absorption box; 36. a rectangular grid structure; 37. mounting a boss; 38. and (7) installing holes.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto.

Fig. 1-7 illustrate a door panel bump clip of the present invention. As shown in fig. 1 and 2, this door protective plate anticollision buckle includes dop 1 and cassette 2, dop 1 includes discount 3, limiting plate 4 and chuck 5, the middle part of cassette 2 is provided with jack 6, dop 1 is still including setting up the shank 7 between discount 3 and limiting plate 4, be provided with the passageway 8 that runs through in the top perpendicular to jack 6's of cassette 2 direction, the inside of passageway 8 is provided with pluggable clamping 9, pluggable clamping 9 is including the bayonet part 10 that can elasticity open and shut, discount 3 can insert the inside of jack 6, and with bayonet part 10 cooperation reverse card end spacing, discount 3 is less than the degree of depth of jack 6 with the total length of shank 7.

When the fastening device is used, the clamping head 1 is fixed on the outer surface of the interior trim panel assembly 28, the clamping seat 2 is fixed at a corresponding position on the inner side surface of the vehicle door metal plate 29, then the fastening head 3 penetrates through the clamping opening part 10 to be inserted into the insertion hole 6, the tail end surface of the fastening head 3 is clamped with the clamping opening part 10, the clamping head 1 cannot be pulled out, and fastening and fixing are completed. Unlike some first fasteners 30 of the prior art, such as plastic fasteners, the anti-collision fastener does not prevent the fastener head 3 from being further inserted into the insertion hole 6, i.e. when a side collision occurs, the occupant presses the trim panel assembly 28 to deform and displace the trim panel assembly in the Y direction, thereby providing a buffering protection effect for the human body. In addition, the anti-collision buckle adopts the structure that the buckle head 3 which cannot deform is inserted into the bayonet part 10 with the size capable of being elastically changed, so that the connection between the clamping head 1 and the clamping seat 2 is realized, and the deformation direction of the bayonet is basically vertical to the connection stress direction of the bayonet, so that the deformation direction and the connection stress direction are not influenced with each other, and the connection strength and the integrity of the vehicle door can be effectively enhanced.

As shown in fig. 3, a first engaging groove 11 and a second engaging groove 12 capable of engaging with the engaging portion 10 for limiting are disposed on a main body of the buckle arm 7, a surface of the buckle arm 7 is smooth, the first engaging groove 11 is disposed at a joint of the buckle head 3 and the buckle arm 7, the first engaging groove 11 is used as an initial engaging position when the door guard plate is installed, when a collision occurs, the clip head 1 further penetrates into the insertion hole 6 under the driving of deformation of the inner decoration plate assembly 28, and if the deformation is small and within an elastic range, the engaging portion 10 moves on the buckle arm 7 and finally returns to the first engaging groove 11; if the interior trim panel assembly 28 has plastic deformation, the bayonet part 10 will move to the position of the second bayonet 12 at the tail end of the buckle arm 7 for clamping, and will not return, and because the clamping size of the second bayonet 12 is larger than that of the first bayonet 11, the bayonet part 10 has a larger opening, and is easier to dismantle and maintain. In addition, the buckle head 3 is preferably designed to be semi-elliptical, the tail end face of the buckle head 3 and the stress surface of the pluggable clamping clip 9 are larger, the connection strength is higher, and reinforcing ribs are arranged at the joint of the buckle arm 7 and the chuck 5 to enhance the strength of the chuck 1.

As shown in fig. 5, the pluggable clip 9 is a symmetrical structure formed by bending a single wire, and includes a hand-held portion 13 formed by bending the wire obliquely from a midpoint to both sides of a symmetry line, a guide portion 14 formed by extending a tip of the hand-held portion 13 in a direction parallel to the symmetry line, a stopper portion 15 formed by bending a tip of the guide portion 14 vertically toward the symmetry line, a first stopper opening 16 formed by bending a tip of the stopper portion 15 obliquely toward the symmetry line and converging on the symmetry line to form a V-shape, a bayonet portion 10 formed by bending a tip of the first stopper opening 16 arcuately toward both sides of the symmetry line and converging on the symmetry line to form a ring-shaped bayonet portion 10, a second stopper opening 17 formed by bending a tip of the bayonet portion 10 obliquely toward both sides of the symmetry line, and an insertion end 18 formed by extending a tip of the second stopper opening 17 in a direction parallel to the symmetry line to a tip of the wire.

As shown in fig. 6 to 8, the inner structure of the passage 8 is designed according to the shape of the pluggable clip 9, so that the pluggable clip 9 can be freely inserted and fixed, and can be easily removed and detached. Four stoppers are provided inside the passage 8 along a circumference of the insertion hole 6, and include a first stopper 19 and a second stopper 20 respectively provided in the middle portions of both side walls of the passage 8, and a third stopper 21 and a fourth stopper 22 provided on the center line in the width direction of the passage 8. The handheld portion 13 extends out of the channel 8 to serve as a force application point of plugging and unplugging, plugging and unplugging are facilitated, the guide portion 14 is attached to inner walls of two sides of the channel 8, the limiting portion 15 is tightly attached to end faces of the first stop block 19 and the second stop block 20, the first limiting port 16 clamps a end portion of the third stop block 21, the second limiting port 17 clamps a end portion of the fourth stop block 22, and limiting fixing is conducted to enable an annular port of the bayonet portion 10 to be just opposite to the jack 6.

As shown in fig. 8, the side faces of the end portions of the third stopper 21 and the fourth stopper 22 facing the insertion hole 6 are both provided with slopes 23, so as to better fit the first limiting opening 16 and the second limiting opening 17 for limiting.

As shown in fig. 6, a gasket 24 is provided at the bottom of the duct 8, and after installation, the gasket 24 will be attached to the door panel 29, thereby providing waterproof and soundproof effects. The hole on cassette 2 and the door panel beating 29 adopts the mode of rotatory fixed to be connected, the symmetry is provided with rotatory arch on the 2 lateral walls of cassette, rotatory bellied middle part is provided with the swivelling chute, the width of swivelling chute is unchangeable by big diminishing gradually again, is provided with the locating piece between two swivelling chutes, puts into the hole with cassette 2 after, rotates cassette 2, the swivelling chute presss from both sides tight panel beating gradually, knows the locating piece and is absorbed in the breach department in hole, accomplishes the installation.

As shown in fig. 4, the elastic spokes 25 are arranged around the outer edge of the chuck 5 at intervals, the elastic spokes 25 include elastic segments 26 and circular arc segments 27, all the circular arc segments 27 are located on the same circle concentric with the chuck 5, one end of the elastic segment 26 is fixed on the side surface of the chuck 5, the other end of the elastic segment 26 is fixed with the circular arc segments 27, and the elastic spokes can carry the circular arc segments 27 to elastically contract along the radial direction of the chuck 5. When the installation, in the draw-in groove of chuck 5 embedding on the mounting base, make chuck 5 chucking location through compressive arc section 27, effectively cushion the vibration of buckle connecting portion, noise abatement.

The door guard board mounting structure utilizing the anti-collision buckles comprises an interior trim board assembly 28 and a door sheet metal 29, wherein a plurality of first buckles 30 are arranged between two side edges and a bottom edge of the interior trim board assembly 28 and the door sheet metal 29 at intervals, the interior trim board assembly 28 comprises an upper body 31, a middle trim board 32 connected with the upper body 31, a lower body 33 connected with the middle trim board 32 and a map bag 34 arranged on the lower body 33, a collapsing energy absorption structure is arranged on a main body of the middle trim board 32, an anti-collision buckle is arranged on the rear side edge of the middle trim board 32, an energy absorption box 35 is arranged on the rear side of the map bag 34, and an anti-collision buckle is arranged on the rear side edge of the top of the energy absorption box 35.

As shown in fig. 9, the front structure diagram of the interior trim panel assembly 28 is shown, the middle trim panel 32 is a joint of the arms of the passenger, the tail of the upper body 31 is a region corresponding to the shoulders of the human body, the pelvis of the human body mainly faces the tail of the lower body 33, as shown in fig. 10, the back structure diagram of the interior trim panel assembly 28 is shown, two cartridge heads 1 of the anti-collision buckle are installed at the above-mentioned key parts, as shown in fig. 10, the inner side structure diagram of the door sheet metal 29 is shown, and two cartridge heads 2 of the anti-collision buckle are installed at the corresponding positions of the cartridge heads 1.

In the door trim mounting structure, the first buckle 30 is a plastic buckle as described in the background art, and the energy-absorbing box 35 and the anti-collision buckle are added to a main collision area, such as a rear area of the middle trim 32 corresponding to the chest of the occupant, and a rear area of the lower body 33 corresponding to the pelvis of the occupant, so as to increase the energy absorbed by the trim assembly 28 during collision and protect the human body.

As shown in fig. 10, the crush-energy absorbing structure includes a rectangular lattice structure 36 disposed on the surface of the middle fascia 32, and the rectangular lattice structure 36 is formed by a plurality of vertically crossing grooved lines. The structural strength is weakened, and the energy is absorbed by collapse when the vehicle collides violently.

As shown in fig. 12, the outer side surface of the door trim assembly 28 is provided with a mounting boss 37, the mounting boss 37 is mainly fixed to the buckle 3 through the mounting boss 37, the mounting boss 37 has a hollow shell structure, and the side wall of the mounting boss is provided with a hollow structure, so that the structural strength is weakened, the mounting boss can collapse and absorb energy in case of severe collision, a mounting hole 38 with an opening is provided on the mounting surface of the mounting boss 37, and the chuck 1 is fixed in the mounting hole 38.

The method for disassembling the door protection plate mounting structure comprises the following steps:

the method comprises the following steps: the screw connected with the door sheet metal 29 of the interior trim panel assembly 28 is taken down by a screwdriver;

step two: inserting a special plastic crowbar tool into the edges of the interior trim panel assembly 28 and the door sheet metal 29 corresponding to the first buckles 30, prying off all the first buckles 30 one by one, namely, releasing elastic chucks of the first buckles 30 (common plastic buckles in the background technology) from holes of the door sheet metal 29, and exposing gaps between the edge interior trim panel assembly 28 and the door sheet metal 29;

step three: clamping a plastic crowbar head at a gap at the rear side edge of the middle decorative plate 32, extending into a hook to hang the pluggable clamp 9, pulling out the plastic crowbar head with force to disassemble a first anti-collision buckle, clamping the plastic crowbar head at the gap at the rear side edge of the top of the energy absorption box 35 in the same way, extending into the hook to hang the pluggable clamp 9, pulling out the plastic crowbar head with force to disassemble a second anti-collision buckle;

step four: the interior trim panel assembly 28 is removed.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.