CN112610085A

CN112610085A - A spacing subassembly for car

Info

Publication number: CN112610085A
Application number: CN202110094168.3A
Authority: CN
Inventors: 林晓燕; 张兴满
Original assignee: Yuhuan Xingqi Power Co ltd
Current assignee: Yuhuan Xingqi Power Co ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2021-04-06
Also published as: CN110924771B; CN110924771A; CN112610083A

Abstract

The invention belongs to the field of automobile door limiters, and particularly relates to a limiting assembly for an automobile, which comprises a limiting arm, a buffer block and a limiting box mechanism, wherein one end of the limiting arm is fixed on the automobile body through a mounting seat hinged with the limiting arm and near the hinged part of the automobile door, and the other end of the limiting arm penetrates through the limiting box mechanism fixedly arranged in the automobile door; the invention can carry on the regulation of four times, the regulation of each time is to the compression of the compression spring in the telescopic link of another side on the basis of regulating last time, the invention does not need to dismantle the car door and can finish the regulation and maintenance to the car door stop, its cost is lower; by alternately adjusting the two pressure springs in the invention, the invention can ensure the effective limitation of the invention on the opening degree of the vehicle door and effectively prevent the opened vehicle door from being closed under the action of wind or other external force.

Description

A spacing subassembly for car

Technical Field

The invention belongs to the field of automobile door limiters, and particularly relates to a limiting assembly for an automobile.

Background

The Door check (Door check) functions to limit the degree to which the Door opens. On one hand, the door can be limited in maximum opening degree, so that the door is prevented from being opened too much, and on the other hand, the door can be kept open when needed, and the door cannot be automatically closed when the automobile stops on a ramp or blows ordinary wind. The common car door limiter is an independent drawstring type limiter, and the other limiters and a door hinge are manufactured into a whole, so that the car door limiter has a limiting function when the car door is fully opened or half opened. The traditional vehicle door limiter is simple in structure, low in cost and small in occupied space.

However, the conventional door check device has a door check device with a pinch roller and a spring, and two pinch rollers which are symmetrically distributed up and down respectively squeeze a limit arm between the two pinch rollers under the compression of corresponding precompressed springs to limit the opening degree of the door; the spring in the door stopper in the form can generate deformation fatigue after being repeatedly used for a long time, so that the prepressing force of the spring on the pressing wheel is insufficient, the limiting effect of the spring on the door is further influenced, and the maintenance cost of the door stopper is increased.

In view of the above-mentioned disadvantages of the conventional door check with spring-loaded pinch rollers, it is necessary to design a door check capable of adjusting the compression amount of the spring.

The invention designs a limiting assembly for an automobile to solve the problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention discloses a limiting assembly for an automobile, which is realized by adopting the following technical scheme.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally use, which are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

A spacing subassembly for car which characterized in that: the automobile door limiting device comprises a limiting arm, a buffer block and a limiting box mechanism, wherein one end of the limiting arm is fixed near the hinged part of an automobile door on an automobile body through a mounting seat hinged with the limiting arm, and the other end of the limiting arm penetrates through the limiting box mechanism fixedly arranged in the automobile door; the upper surface and the lower surface of the limiting arm are respectively provided with two limiting bulges A matched with the limiting box mechanism, and the limiting bulges A on the upper surface and the lower surface of the limiting arm are vertically symmetrical; and a buffer block matched with the limiting box mechanism is installed at one end of the limiting arm in the vehicle door, and the buffer block limits the maximum opening degree of the vehicle door.

The limiting box mechanism comprises a shell, pressing wheels, swing rods, pressure springs, wedge blocks A, wedge blocks B, racks, limiting blocks, clamping blocks, fixed pulleys, elastic ropes, gears, sliding blocks and screws, wherein the two swing rods with one ends hinged with the inner wall of the shell through swing shafts swing in the shell around corresponding swing shafts respectively; two wedge blocks A which are vertically distributed and vertically move in the shell in opposite directions push the swing rod on the same side through pressure springs respectively so as to form extrusion of two pinch rollers on the swing rod on the same side on the corresponding surface of the limiting arm; a screw rod which is provided with a cross nut and is rotationally matched with the shell is in threaded fit with a sliding block which horizontally slides in the shell; the side surface of the sliding block is provided with a gear, and the upper end and the lower end of the gear are respectively meshed with two racks which horizontally slide in the shell; the two racks are respectively provided with a wedge block B matched with the wedge block A on the same side, and the wedge block B extrudes the wedge block A on the same side to the direction of the limiting arm; the wedge block A and the corresponding wedge block B are provided with structures for limiting the resetting of the wedge blocks A and B.

Three limiting blocks are respectively distributed on the same sides of the two racks at intervals along the length direction, and the distance between every two adjacent limiting blocks is equal to the width of the limiting block; the spacing between the limiting blocks on the upper rack and the spacing between two adjacent limiting blocks on the lower rack are opposite, so that when the side surface of the upper end of the fixture block is contacted with the side surface of the upper limiting block on the upper rack, the end surface of the lower end of the fixture block is exactly opposite to the upper surface of the upper limiting block on the lower rack; when the end face of the upper end of the clamping block is completely opposite to the lower surface of the upper limiting block of the upper rack, the side face of the lower end of the clamping block just contacts with the side face of the upper limiting block of the lower rack. The upper end and the lower end of a clamping block which vertically slides in the shell are respectively connected with one end, close to the L plate B, of the rack on the same side through elastic ropes, and each elastic rope bypasses a fixed pulley which guides the elastic ropes to pull the clamping block to vertically move.

As a further improvement of the technology, a trapezoidal guide block B is mounted on the fixture block and vertically slides in a trapezoidal guide groove B on the inner wall of the shell; the screw rod is in rotating fit with the circular groove on the side wall of the shell; the inner wall of the circular groove is circumferentially provided with a ring groove; the screw rod is fixedly embedded with a rotating ring which rotates in the ring groove along with the screw rod. The trapezoidal guide block B is matched with the trapezoidal guide groove B to play a role in positioning and guiding the vertical movement of the fixture block. The cooperation of the rotating ring and the annular groove ensures that only relative rotation occurs between the screw and the housing and no axial movement occurs relative to the housing.

As a further improvement of the technology, sliding sleeves are respectively nested and slid on the two swing rods, vertical telescopic rods are respectively installed on the two wedge blocks A, and the two wedge blocks A are respectively fixedly connected with outer rods of the corresponding telescopic rods; the tail end of an inner rod of the telescopic rod is hinged with the sliding sleeve on the swing rod on the same side; the two pressure springs are respectively positioned in the two telescopic rods; one end of the pressure spring is connected with the end of the inner rod of the corresponding telescopic rod, and the other end of the pressure spring is connected with the inner wall of the outer rod of the corresponding telescopic rod; the pressure spring is always in a compressed state; two guide blocks are symmetrically arranged on the inner rod of the telescopic rod and vertically slide in two guide grooves on the inner wall of the corresponding outer rod. The cooperation of guide block and guide way guarantees that the pressure spring who is located the telescopic link is in the precompression state to make the telescopic link just have great pressure to corresponding pendulum rod at initial state, guarantee that initial state's pinch roller is spacing to the effective extrusion of spacing arm, and then spacing to the door formation effectual aperture.

As a further improvement of the technology, the inclined surface of the wedge block a is provided with three limit grooves which are uniformly distributed at intervals along the inclined direction of the inclined surface, the lower inner wall of each limit groove is a vertical surface, and the higher inner wall of each limit groove is an inclined surface with the same inclined direction as the inclined surface of the wedge block a; the end, closest to the limiting arm, of the inclined surface of the wedge block B is provided with a limiting protrusion B, and the limiting protrusion B is matched with a limiting groove in the corresponding wedge block A to prevent the wedge block A and the wedge block B which are matched with each other from resetting.

As a further improvement of the technology, two guide seats are vertically and symmetrically arranged in the shell; two trapezoidal guide blocks C are symmetrically arranged on the two wedge blocks A; two trapezoidal guide blocks C on two sides of each wedge block A respectively vertically slide in two trapezoidal guide grooves C on the inner wall of the guide seat on the same side; the upper surface and the lower surface of the sliding block are symmetrically provided with two trapezoidal guide blocks E; the two trapezoidal guide blocks E respectively slide in the trapezoidal guide grooves E on the two guide seats; trapezoidal guide blocks D are installed on the two racks, and the trapezoidal guide blocks B on the two racks slide in the trapezoidal guide grooves D on the bases on the same side respectively. The trapezoidal guide block C is matched with the trapezoidal guide groove C to play a role in positioning and guiding the wedge block A along the vertical sliding of the inner wall of the guide seat. The matching of the trapezoidal guide block D and the trapezoidal guide groove D plays a role in positioning and guiding the horizontal sliding of the rack. The trapezoidal guide block E is matched with the trapezoidal guide groove E to play a role in positioning and guiding the horizontal sliding of the sliding block.

As a further improvement of the technology, each wedge block B is provided with a trapezoidal guide block A; two trapezoidal guide grooves A are symmetrically formed in the top and the bottom of the shell; the trapezoidal guide block A on the upper wedge block B slides in the trapezoidal guide groove A at the top in the shell, and the trapezoidal guide block A on the lower wedge block B slides in the trapezoidal guide groove A at the bottom of the shell; each rack is fixedly connected with a corresponding wedge block B through an L plate A; the upper end and the lower end of the clamping block are symmetrically provided with two L-shaped plates B, and the upper end and the lower end of the clamping block are respectively connected with the corresponding elastic ropes through the corresponding L-shaped plates B. The cooperation of trapezoidal guide block A and trapezoidal guide slot A plays the positioning guide effect to the horizontal slip of wedge B along the top in the casing. Because the fixture block is matched with the limiting blocks on the side surfaces of the two racks, the two L-shaped plates B at the two ends of the racks can ensure that the plane where the elastic rope is located is parallel to the rack movement direction, and can ensure that the pulling force generated by the rack movement on the elastic rope is completely used for pulling the fixture block to move in the vertical direction without generating component force, so that the pulling efficiency of the rack movement on the fixture block through the elastic rope is effectively improved.

Compared with the traditional automobile door limiter, the sliding block in threaded fit with the screw rod is driven to move by the rotation of the screw rod, due to the alternate action of the clamping block and the limiting blocks on the two racks, the sliding block sequentially and circularly drives the two racks to move towards the direction far away from the automobile body through the gear, the moving rack drives the corresponding wedge block B to perform dislocation relative to the corresponding wedge block A along the inclined plane of the corresponding wedge block A, so that the wedge block A vertically moves towards the direction of the limiting arm, the moving wedge block A further compresses the corresponding telescopic rod, and a pressure spring in the telescopic rod is further compressed and stored with energy, so that the compression amount of the pressure spring generating deformation fatigue is adjusted, the extrusion force of the pressure spring on the limiting arm through the pinch roller is further ensured, and the limiting effect of the automobile door limiter on the opening degree of an automobile door is continuously and effectively exerted; the invention can carry on the regulation of four times, the regulation of each time is to the compression of the compression spring in the telescopic link of another side on the basis of regulating last time, the invention does not need to dismantle the car door and can finish the regulation and maintenance to the car door stop, its cost is lower; by alternately adjusting the two pressure springs in the invention, the invention can ensure the effective limitation of the invention on the opening degree of the vehicle door and effectively prevent the opened vehicle door from being closed under the action of wind or other external force. The invention has simple structure and better use effect.

Drawings

FIG. 1 is a schematic view of the mounting seat, the limiting arm, the limiting box mechanism and the buffer block.

FIG. 2 is a schematic cross-sectional view of the housing, the pressing wheel, and the spacing arm.

FIG. 3 is a schematic cross-sectional view of the guide, the slider, the gear and the rack.

Fig. 4 is a schematic cross-sectional view of the housing, the screw, the slider, the guide seat, the wedge block a and the wedge block B.

Fig. 5 is a schematic cross-sectional view of the housing and the latch.

Fig. 6 is a schematic cross-sectional view of the housing and its view.

Fig. 7 is a schematic partial cross-sectional view of the housing.

Fig. 8 is a schematic view of the guide.

FIG. 9 is a schematic sectional view of the combination of the pressing wheel, the swing rod, the sliding sleeve, the telescopic rod and the wedge-shaped block A.

Fig. 10 is a schematic diagram of two visual angles of the screw, the slider, the gear, the rack, the fixture block and the limiting block.

Fig. 11 is a schematic view of the wedge B, L, plate a, rack and stopper.

Fig. 12 is a schematic view of the wedge B, L, plate a, rack and stopper.

Fig. 13 is a schematic view of the L-plate B engaging with the latch.

FIG. 14 is a cross-sectional view of the housing, the fixed pulley, the elastic cord, the L-plate B, the latch, the rack, the gear and the slider.

FIG. 15 is a simplified schematic diagram of a process of fitting the gear, the rack, the limiting block and the latch.

Number designation in the figures: 1. a limiting arm; 2. a limiting bulge A; 3. a buffer block; 4. a mounting seat; 5. a limiting box mechanism; 6. a housing; 7. a chute; 8. a circular groove; 9. a ring groove; 10. a trapezoidal guide groove A; 11. a trapezoidal guide groove B; 12. a pinch roller; 13. a swing rod; 14. a pendulum shaft; 15. a sliding sleeve; 16. a telescopic rod; 17. an outer rod; 18. a guide groove; 19. an inner rod; 20. a guide block; 21. a pressure spring; 22. a wedge block A; 23. a limiting groove; 24. a trapezoidal guide block C; 25. a wedge block B; 26. a trapezoidal guide block A; 27. an L plate A; 28. a rack; 29. a limiting block; 36. a clamping block; 37. an L plate B; 38. a fixed pulley; 39. an elastic cord; 40. a gear; 41. a slider; 42. a trapezoidal guide block E; 43. a screw; 44. a rotating ring; 45. a trapezoidal guide block B; 46. a limiting bulge B; 47. a guide seat; 48. a trapezoidal guide groove C; 49. a trapezoidal guide groove D; 50. a trapezoidal guide groove E; 51. and a trapezoidal guide block D.

Detailed Description

The drawings are schematic illustrations of the implementation of the present invention to facilitate understanding of the principles of structural operation. The specific product structure and the proportional size are determined according to the use environment and the conventional technology.

As shown in fig. 1, the vehicle door limiting device comprises a limiting arm 1, a buffer block 3 and a limiting box mechanism 5, wherein one end of the limiting arm 1 is fixed near the hinged part of the vehicle body and the vehicle door through a mounting seat 4 hinged with the limiting arm, and the other end of the limiting arm 1 penetrates through the limiting box mechanism 5 fixedly arranged in the vehicle door; the upper surface and the lower surface of the limiting arm 1 are both provided with two limiting bulges A2 matched with the limiting box mechanism 5, and the limiting bulges A2 on the upper surface and the lower surface of the limiting arm 1 are vertically symmetrical; the buffer block 3 matched with the limit box mechanism 5 is installed at one end, located in the vehicle door, of the limit arm 1, and the buffer block 3 limits the maximum opening degree of the vehicle door.

As shown in fig. 2, 9 and 10, the above-mentioned limiting box mechanism 5 includes a housing 6, pressing wheels 12, swing rods 13, pressure springs 21, a wedge block a22, a wedge block B25, a rack 28, a limiting block 29, a clamping block 36, a fixed pulley 38, an elastic rope 39, a gear 40, a slider 41 and a screw 43, wherein as shown in fig. 2 and 9, two swing rods 13, one ends of which are hinged with the inner wall of the housing 6 through a swing shaft 14, swing in the housing 6 around the corresponding swing shaft 14 respectively, the swing ends of the two swing rods 13 are rotatably fitted with two pressing wheels 12, and the pressing wheels 12 on the two swing rods 13 form symmetrical extrusion on the upper and lower surfaces of the limiting arm 1 passing through a chute 7 on the side wall of the housing 6; as shown in fig. 2, 4 and 9, two wedge blocks a22 vertically distributed and vertically moving in opposite directions in the housing 6 respectively push the swing link 13 on the same side through the pressure spring 21 to form the extrusion of two pressing wheels 12 on the swing link 13 on the same side on the corresponding surfaces of the limiting arm 1; as shown in fig. 4 and 5, a screw 43 having a cross nut and rotatably engaged with the housing 6 is screw-engaged with the slider 41 horizontally sliding in the housing 6; as shown in fig. 3 and 10, a gear 40 is installed on the side surface of the sliding block 41, and the upper end and the lower end of the gear 40 are respectively meshed with the two racks 28 horizontally sliding in the housing 6; as shown in fig. 4 and 9, the two racks 28 are respectively provided with a wedge block B25 which is matched with the wedge block a22 on the same side; as shown in fig. 2, 4 and 9, the wedge block B25 extrudes the wedge block a22 at the same side to the direction of the limiting arm 1; as shown in fig. 9, 11 and 12, the wedge block a22 and the corresponding wedge block B25 have a structure for limiting the reset of the two.

As shown in fig. 10, 11 and 12, three limit blocks 29 are respectively distributed on the same side of the two racks 28 at intervals along the length direction, and the distance between two adjacent limit blocks 29 is equal to the width of the limit blocks 29; the spacing between the limiting blocks 29 on the upper rack 28 and the spacing between two adjacent limiting blocks 29 on the lower rack 28 are opposite, so that when the side surface of the upper end of the clamping block 36 is contacted with the side surface of the limiting block 29 on the upper rack 28, the end surface of the lower end of the clamping block 36 is just opposite to the upper surface of the limiting block 29 on the lower rack 28; when the end surface of the upper end of the latch 36 is completely opposite to the lower surface of the stopper 29 on the upper rack 28, the side surface of the lower end of the latch 36 just contacts with the side surface of the stopper 29 on the lower rack 28. As shown in fig. 10 and 14, the upper and lower ends of the latch 36 vertically sliding in the housing 6 are connected to one end of the rack 28 on the same side near the L-shaped plate B37 through elastic cords 39, and each elastic cord 39 passes around a fixed pulley 38 guiding the elastic cord 39 to pull the latch 36 to move vertically.

As shown in fig. 13, the latch 36 is provided with a trapezoidal guide B45; as shown in fig. 5, 6 and 7, the trapezoidal guide block B45 vertically slides in the trapezoidal guide groove B11 on the inner wall of the housing 6; as shown in fig. 5 and 7, the screw 43 is rotatably matched with the circular groove 8 on the side wall of the shell 6; a ring groove 9 is circumferentially arranged on the inner wall of the circular groove 8; the screw 43 is fixedly sleeved with a rotating ring 44, and the rotating ring 44 rotates in the ring groove 9 along with the screw 43. The cooperation of the trapezoidal guide block B45 and the trapezoidal guide groove B11 plays a positioning and guiding role in the vertical movement of the latch 36. The engagement of the ring 44 with the ring groove 9 ensures that only relative rotation occurs between the screw 43 and the housing 6 and no axial movement occurs relative to the housing 6.

As shown in fig. 2 and 9, sliding sleeves 15 are respectively nested and slid on the two swing rods 13, vertical telescopic rods 16 are respectively installed on the two wedge blocks a22, and the two wedge blocks a22 are respectively fixedly connected with outer rods 17 of the corresponding telescopic rods 16; the tail end of an inner rod 19 of the telescopic rod 16 is hinged with a sliding sleeve 15 on the swing rod 13 on the same side; the two pressure springs 21 are respectively positioned in the two telescopic rods 16; one end of the pressure spring 21 is connected with the rod end of the inner rod 19 of the corresponding telescopic rod 16, and the other end of the pressure spring is connected with the inner wall of the outer rod 17 of the corresponding telescopic rod 16; the pressure spring 21 is always in a compressed state; two guide blocks 20 are symmetrically arranged on an inner rod 19 of the telescopic rod 16, and the two guide blocks 20 are vertically arranged in two guide grooves 18 on the inner wall of the corresponding outer rod 17 in a sliding manner. The cooperation of guide block 20 and guide way 18 guarantees that the pressure spring 21 that is located telescopic link 16 is in the precompression state to make telescopic link 16 just have great pressure to corresponding pendulum rod 13 at initial condition, guarantee the effective extrusion of pinch roller 12 to spacing arm 1 of initial condition, and then spacing to the effectual aperture of door formation.

As shown in fig. 9, the inclined surface of the wedge-shaped block a22 is provided with three spacing grooves 23 uniformly distributed at intervals along the inclined direction of the inclined surface, the lower inner wall of the spacing groove 23 is a vertical surface, and the higher inner wall of the spacing groove 23 is an inclined surface having the same inclined direction as the inclined surface of the wedge-shaped block a 22; as shown in fig. 11 and 12, the end of the inclined surface of the wedge block B25 closest to the limiting arm 1 is provided with a limiting projection B46; as shown in fig. 4, the limiting protrusion B46 cooperates with the limiting groove 23 on the corresponding wedge block a22 to prevent the mutually cooperating wedge block a22 and wedge block B25 from being reset.

As shown in fig. 3 and 4, two guide seats 47 are vertically and symmetrically installed in the housing 6; as shown in fig. 9, two trapezoidal guide blocks C24 are symmetrically mounted on each of the two wedge blocks a 22; as shown in fig. 4, the two trapezoidal guide blocks C24 on both sides of each wedge block a22 vertically slide in the two trapezoidal guide grooves C48 on the inner wall of the same side guide seat 47; as shown in fig. 3 and 10, two trapezoidal guide blocks E42 are symmetrically mounted on the upper and lower surfaces of the slider 41; as shown in fig. 3 and 8, the two trapezoidal guide blocks E42 slide in the trapezoidal guide grooves E50 on the two guide seats 47, respectively; as shown in fig. 11 and 12, trapezoidal guide blocks D51 are mounted on both of the racks 28; as shown in fig. 3 and 8, the trapezoidal guide blocks B45 on the two racks 28 slide in the trapezoidal guide grooves D49 on the same side base. The cooperation of the trapezoidal guide block C24 and the trapezoidal guide groove C48 plays a positioning and guiding role in the vertical sliding of the wedge block a22 along the inner wall of the guide seat 47. The cooperation of the trapezoidal guide block D51 and the trapezoidal guide groove D49 plays a positioning and guiding role in the horizontal sliding of the rack 28. The cooperation of the trapezoidal guide block E42 and the trapezoidal guide groove E50 plays a role in positioning and guiding the horizontal sliding of the slider 41.

As shown in fig. 11 and 12, each wedge block B25 is provided with a trapezoidal guide block a 26; as shown in fig. 6, two trapezoidal guide grooves a10 are symmetrically formed at the top and the bottom in the shell 6; as shown in fig. 4, 6 and 10, the trapezoidal guide block a26 on the upper wedge block B25 slides in the trapezoidal guide groove a10 at the top inside the housing 6, and the trapezoidal guide block a26 on the lower wedge block B25 slides in the trapezoidal guide groove a10 at the bottom of the housing 6; each rack 28 is fixedly connected with a corresponding wedge block B25 through an L-shaped plate A27; two L-shaped plates B37 are symmetrically arranged at the upper end and the lower end of the fixture block 36, and the upper end and the lower end of the fixture block 36 are respectively connected with the corresponding elastic ropes 39 through the corresponding L-shaped plates B37. The cooperation of the trapezoidal guide block A26 and the trapezoidal guide groove A10 plays a positioning and guiding role for the horizontal sliding of the wedge block B25 along the inner top of the shell 6. Because the clamping blocks 36 are matched with the limiting blocks 29 on the side surfaces of the two racks 28, the two L-shaped plates B37 at the two ends of the rack 28 can ensure that the plane where the elastic rope 39 is located is parallel to the movement direction of the racks 28 and is opposite, and can ensure that the pulling force generated by the movement of the racks 28 in the elastic rope 39 is completely used for pulling the clamping blocks 36 to move in the vertical direction without generating component force, thereby effectively improving the pulling efficiency of the movement of the racks 28 on the clamping blocks 36 through the elastic rope 39.

The elastic ropes 39 in the invention have high elasticity, after each adjustment, the two elastic ropes 39 can be further stretched on the original basis and finally reach the stretching balance, even if the two elastic ropes 39 after four times of adjustment fail due to aging, because the two wedge blocks A22 are respectively matched with the corresponding wedge block B25 through the limiting bulges B46 and the limiting grooves 23 for preventing the wedge blocks A22 and B25 from resetting, even if the two elastic ropes 39 fail due to aging, the pinch rollers 12 on the two swing rods 13 still effectively extrude the limiting arm 1 in the middle of the sliding groove 7 as long as the screw 43 is not rotated.

The invention discloses a wedge block A, which comprises a wedge block A and a wedge block B, wherein the wedge block A is provided with two limiting grooves, the limiting grooves are in proportional relation with the wedge block A, the drawing of the invention is only schematic, in the actual manufacturing process, the limiting grooves are required to be opened greatly in order to have enough limiting capacity, so that the wedge block A cannot accommodate a plurality of limiting grooves, preferably, the two limiting grooves are proper.

The working process of the invention is as follows: as shown in fig. 15a, in the initial state, the limiting protrusions B46 on the two wedge blocks B25 are respectively embedded into the limiting grooves 23 which are closest to the limiting arm 1 on the inclined surface of the corresponding wedge block a 22; the pinch rollers 12 of the two swing rods 13 are respectively in extrusion contact with the upper surface and the lower surface of the limiting arm 1; the side surface of the upper end of the clamping block 36 is contacted with the side surface of the limiting block 29 on the upper rack 28, which is farthest from the bolt and the nut, so as to limit the rack 28 to move towards the direction of the power vehicle body; the lower end surface of the clamping block 36 is completely opposite to the upper surface of the limiting block 29 on the lower rack 28 farthest from the bolt and the nut, and a small gap is formed between the upper surface and the lower surface; the two elastic retractions are both in an unstretched state; the limiting arm 1 is located in the middle of the sliding groove 7, and the upper surface and the lower surface of the limiting arm 1 are respectively spaced from the top surface and the bottom surface of the sliding groove 7.

As shown in fig. 15a, when the present invention is not ideal for limiting the door opening after a long time use, the cross screw nut on the inner side of the door is turned by the cross screwdriver to drive the screw 43 to rotate synchronously; due to the matching effect of the screw 43 and the thread of the sliding block 41, the rotating screw 43 drives the sliding block 41 to slide in the direction away from the vehicle body; at this time, the side surface of the limiting block 29 on the upper rack 28 farthest from the bolt and the nut contacts with the side surface of the upper end of the fixture block 36, the end surface of the lower end of the fixture block 36 completely faces the upper surface of the limiting block 29 on the lower rack 28 farthest from the bolt and the nut and has a small gap, so that the fixture block 36 prevents the upper rack 28 from moving in the direction away from the vehicle body, the upper rack 28 drives the gear 40 which moves synchronously with the slider 41 to rotate, the rotating gear 40 drives the lower rack 28 to move in the direction away from the vehicle body, one end of the lower rack 28 far from the bolt and the nut pulls the fixture block 36 to move vertically and downwards through the corresponding elastic rope 39, the end surface of the lower end of the fixture block 36 instantly contacts with the upper surface of the limiting block 29, and the upper limiting block 29 of the; since the stop block 29 on the lower rack 28 prevents the fixture block 36 from moving vertically downward, the elastic cord 39 corresponding to the lower rack 28 is gradually stretched and stores energy along with the movement of the lower rack 28; meanwhile, the lower rack 28 drives the lower wedge block B25 to move synchronously through the corresponding L-shaped plate a27, and the limit protrusion B46 on the lower wedge block B25 starts to gradually separate from the corresponding limit groove 23 and drives the corresponding wedge block a22 to move vertically upwards along the inner wall of the corresponding guide seat 47; the lower wedge block A22 further compresses the corresponding telescopic rod 16, so that the pressure spring 21 in the lower telescopic rod 16 is further compressed and stores energy, and the elastic force of the pressure spring 21 in the lower telescopic rod 16 is increased to compensate the elastic force reduction caused by the fatigue failure of the pressure spring 21; the telescopic rod 16 compressed by the internal pressure spring 21 drives the two corresponding pressing wheels 12 to extrude the lower surface of the limiting arm 1 through the corresponding sliding sleeve 15 and the swing rod 13 and drives the limiting arm 1 to move upwards; due to the mutual limiting between the upper wedge block A22 and the upper wedge block B25, the limiting arm 1 moving upwards can further compress the upper telescopic rod 16 through the upper pressing wheel 12, the upper swing rod 13 and the upper sliding sleeve 15, so that the pressure spring 21 in the upper telescopic rod 16 is compressed and stores energy; when the elasticity of the upper and lower pressure springs 21 reaches balance, the limiting arm 1 is positioned at the upper part of the middle part of the sliding chute 7.

As shown in fig. 15B, when the lower end of the latch 36 is completely separated from the stopper 29 on the lower rack 28, which is farthest from the bolt and nut, the stopper protrusion B46 on the lower wedge block B25 is just instantly inserted into the second stopper groove 23 on the lower wedge block a22, and at this time, under the action of the pressure spring 21 in the lower telescopic rod 16, the lower wedge block a22 instantly moves vertically downward and contacts and collides with the corresponding wedge block B25; when the impact sound of the wedge block A22 and the wedge block B25 is heard, the screw 43 stops rotating and the adjustment is completed; at this time, since the lower part of the upper inclined surface of the lower wedge block a22 is in contact with the higher part of the upper inclined surface of the corresponding wedge block B25, the whole lower wedge block a22 is displaced vertically upwards by a certain distance, so that the pressure springs 21 in the lower telescopic rod 16 are further compressed, the pressure springs 21 in the upper and lower telescopic rods 16 are further compressed by the same amount to reach balance, and finally, the pressure reduction caused by the deformation fatigue of the two pressure springs 21 is compensated, so that the pressing wheels 12 on the two swing rods 13 keep effective extrusion on the limiting arm 1.

When the lower end of the fixture block 36 is completely separated from the limiting block 29 on the lower rack 28, which is farthest from the bolt and the nut, under the action of the pulling force of the stretched lower elastic rope 39, the fixture block 36 rapidly moves vertically and downwards, the lower end of the fixture block 36 rapidly enters between the limiting block 29, which is farthest from the bolt and the nut, and the middle limiting block 29, and the upper end of the fixture block 36 simultaneously and rapidly separates from the limiting block 29 on the upper rack 28, which is farthest from the bolt and the nut; because the adjustment is finished at this time, the screw 43 stopping rotation is in threaded fit with the slider 41 to have a self-locking function, the lower rack 28 does not move under the interaction of the two adjacent limiting blocks 29 on the lower rack and the lower end of the fixture block 36, the gear 40 stops rotating, and the upper rack 28 does not move under the limitation of the gear 40, so the fixture block 36 moving vertically and downwards quickly stretches and stores energy to the upper elastic rope 39; when the fixture block 36 stops moving, the lower end of the fixture block 36 is already positioned between the stopper 29 farthest from the bolt and the nut on the lower rack 28 and the middle stopper 29, and the upper end of the fixture block 36 is already separated from the stopper 29 farthest from the bolt and the nut on the upper rack 28 and forms a slight distance with the lower surface of the stopper 29 on the upper rack 28; at this time, both elastic cords 39 are in a state of tensile equilibrium.

As shown in fig. 15b, when the two adjusted pressure springs 21 in the present invention are not effective as a door check due to the deformation fatigue occurring again after long-term use, the second adjustment is performed; a cross screw driver is used for rotating the cross nut on the inner side of the vehicle door in the same direction to drive the screw 43 to rotate synchronously; due to the matching effect of the screw 43 and the thread of the sliding block 41, the rotating screw 43 drives the sliding block 41 to slide in the direction away from the vehicle body; at this time, the lower end of the fixture block 36 is located between the limit block 29, which is farthest from the bolt and the nut, on the lower rack 28 and the second limit block 29, the upper end face of the fixture block 36 is completely separated from the side face of the limit block 29, which is farthest from the bolt and the nut, on the upper rack 28, and a small gap is formed on the lower surface of the limit block 29, which is farthest from the bolt and the nut, on the upper rack 28, so that the fixture block 36 prevents the lower rack 28 from moving away from the vehicle body, the lower rack 28 drives the gear 40, which moves synchronously with the slider 41, to rotate, the rotating gear 40 drives the upper rack 28 to move away from the vehicle body, and the limit block 29 and the fixture block 36; one end of the upper rack 28 far away from the bolt and the nut pulls the fixture block 36 to move vertically upwards through the corresponding elastic rope 39; since the upper end surface of the latch 36 has a slight gap from the lower surface of the stopper 29 farthest from the bolt nut, when the upper end of the latch 36 is pulled by the upper elastic cord 39 to travel the slight gap, the upper end surface of the latch 36 is already in contact with the lower surface portion of the stopper 29 on the upper rack 28 farthest from the bolt nut; since the stopper 29 of the upper rack 28 contacting the upper end surface of the latch 36 prevents the latch 36 from further moving vertically upward, the elastic cord 39 corresponding to the upper rack 28 is gradually further stretched and stores energy again with the movement of the upper rack 28; meanwhile, the upper rack 28 drives the upper wedge block B25 to move synchronously through the corresponding L-shaped plate a27, and the limit protrusion B46 on the upper wedge block B25 starts to gradually disengage from the corresponding limit groove 23 and drives the corresponding wedge block a22 to move vertically and downwardly along the inner wall of the corresponding guide seat 47; the upper wedge block A22 further compresses the corresponding telescopic rod 16, so that the pressure spring 21 in the upper telescopic rod 16 is further compressed and stores energy, the elastic force of the pressure spring 21 in the upper telescopic rod 16 is increased to compensate the reduction of the elastic force caused by the fatigue failure of the pressure spring 21 again; the telescopic rod 16 compressed by the internal pressure spring 21 drives the two corresponding pressing wheels 12 to extrude the upper surface of the limiting arm 1 through the corresponding sliding sleeve 15 and the swing rod 13 and drives the limiting arm 1 to move downwards; due to the mutual limiting between the lower wedge block A22 and the corresponding wedge block B25, the limiting arm 1 moving downwards further compresses the lower telescopic rod 16 again through the lower pressing wheel 12, the lower swing rod 13 and the lower sliding sleeve 15, so that the pressure spring 21 in the lower telescopic rod 16 is further compressed again and stores energy; when the elastic forces of the upper and lower pressure springs 21 reach balance, the limiting arm 1 returns to the middle of the sliding chute 7 again.

As shown in fig. 15c, when the upper end surface of the latch 36 is completely separated from the lower surface of the stopper 29 farthest from the bolt and nut on the upper rack 28, the stopper protrusion B46 on the upper wedge block B25 is just instantly inserted into the second stopper groove 23 on the upper wedge block a22, and at this time, under the action of the pressure spring 21 in the upper telescopic rod 16, the upper wedge block a22 instantly moves vertically upward and contacts and collides with the corresponding wedge block B25; when the impact sound of the wedge block A22 and the wedge block B25 is heard, the screw 43 stops rotating and the adjustment is completed; at this time, since the upper inclined surface of the upper wedge block a22 is in contact with the lower inclined surface of the corresponding wedge block B25, the whole upper wedge block a22 vertically and downwardly produces a displacement of a certain distance, so that the pressure spring 21 in the upper telescopic rod 16 is further compressed again, the pressure springs 21 in the upper and lower telescopic rods 16 are further compressed by the same amount again, and finally, the pressure reduction caused by the fatigue of the two pressure springs 21 due to deformation again is compensated, and the pressing wheels 12 on the two swing rods 13 keep effective extrusion on the limiting arm 1.

When the end surface of the upper end of the fixture block 36 is completely separated from the lower surface of the stopper 29 farthest from the bolt and the nut on the upper rack 28, under the action of the pulling force of the upper elastic rope 39 which is further stretched, the fixture block 36 rapidly moves vertically and upwardly, the upper end of the fixture block 36 rapidly enters between the stopper 29 farthest from the bolt and the nut on the upper rack 28 and the second stopper 29, and the lower end of the fixture block 36 simultaneously rapidly separates between the stopper 29 farthest from the bolt and the nut on the lower rack 28 and the second stopper 29; because the adjustment is finished at this time, the screw 43 stopping rotation is in threaded fit with the slider 41 to have a self-locking function, the upper rack 28 does not move under the interaction of the two adjacent limiting blocks 29 on the upper rack and the upper ends of the clamping blocks 36, the gear 40 stops rotating, and the lower rack 28 does not move under the limitation of the gear 40, so that the clamping blocks 36 moving vertically and upwards quickly stretch and store energy for the lower elastic ropes 39; when the fixture block 36 stops moving, the upper end of the fixture block 36 is already positioned between the limiting block 29 and the middle limiting block 29 on the upper rack 28, which are farthest from the bolt and the nut, and the lower end of the fixture block 36 is completely separated from the limiting block 29 and the middle limiting block 29 on the lower rack 28, which are farthest from the bolt and the nut, and a slight distance is formed between the lower end of the fixture block 36 and the upper surface of the limiting block 29 on the lower rack 28; at this time, both elastic cords 39 are in further stretched equilibrium.

As described in the above flow, the screw 43 is rotated in the same direction each time to realize the alternate movement of the two racks 28, after each pair of racks 28 finishes moving, the limiting protrusion B46 on the corresponding wedge block B25 moves along the inclined surface of the corresponding wedge block a22 and enters the limiting groove 23 far away from the limiting arm 1, thereby completing one adjustment of the present invention, so that after the present invention is continuously adjusted four times, the adjusting times of the present invention reach the limit, the pressure springs 21 in the two telescopic rods 16 are compressed to a sufficient amount, the pressure springs 21 compressed to a sufficient amount will not easily generate fatigue phenomenon, and can provide a larger extrusion force for the pressing wheel 12, so that the present invention can continuously exert effective limiting effect on the vehicle door after four times of adjustment, thereby prolonging the service life of the present invention and reducing the maintenance cost of the present invention.

In conclusion, the beneficial effects of the invention are as follows: according to the invention, the screw 43 rotates to drive the slide block 41 in threaded fit with the screw, due to the alternate action of the fixture block 36 and the limiting blocks 29 on the two racks 28, the slide block 41 sequentially and circularly drives the two racks 28 to move in the direction far away from the vehicle body through the gear 40, the moving rack 28 drives the corresponding wedge block B25 to perform dislocation relative to the corresponding wedge block A22 along the inclined plane of the corresponding wedge block A22, so that the wedge block A22 vertically moves in the direction of the limiting arm 1, the moving wedge block A22 further compresses the corresponding telescopic rod 16, the pressure spring 21 in the telescopic rod 16 is further compressed and stores energy, the adjustment of the compression amount of the pressure spring 21 which generates deformation fatigue is realized, the extrusion force of the pressure spring 21 on the limiting arm 1 through the pinch roller 12 is further ensured, and the limiting effect of the vehicle door limiter on the opening degree is continuously and effectively exerted; the invention can carry on the regulation of four times, the regulation of each time is to the further compression of the pressure spring 21 in the telescopic link 16 of the other side on the basis of regulating last time, the invention does not need to dismantle the car door and can finish the regulation and maintenance to the car door stop, its cost is lower; through the alternate adjustment of the two pressure springs 21 in the invention, the effective limitation of the invention on the opening degree of the vehicle door can be ensured, and the opened vehicle door can be effectively prevented from being closed under the action of wind or other external force.

Claims

1. A spacing subassembly for car which characterized in that: the automobile door limiting device comprises a limiting arm, a buffer block and a limiting box mechanism, wherein one end of the limiting arm is fixed near the hinged part of an automobile door on an automobile body through a mounting seat hinged with the limiting arm, and the other end of the limiting arm penetrates through the limiting box mechanism fixedly arranged in the automobile door; the upper surface and the lower surface of the limiting arm are respectively provided with two limiting bulges A matched with the limiting box mechanism, and the limiting bulges A on the upper surface and the lower surface of the limiting arm are vertically symmetrical; one end of the limiting arm, which is positioned in the vehicle door, is provided with a buffer block matched with the limiting box mechanism, and the buffer block limits the maximum opening degree of the vehicle door;

the limiting box mechanism comprises a shell, pressing wheels, swing rods, pressure springs, wedge blocks A, wedge blocks B, racks, limiting blocks, clamping blocks, fixed pulleys, elastic ropes, gears, sliding blocks and screws, wherein the two swing rods with one ends hinged with the inner wall of the shell through swing shafts swing in the shell around corresponding swing shafts respectively; two wedge blocks A which are vertically distributed and vertically move in the shell in opposite directions push the swing rod on the same side through pressure springs respectively so as to form extrusion of two pinch rollers on the swing rod on the same side on the corresponding surface of the limiting arm; a screw rod which is provided with a cross nut and is rotationally matched with the shell is in threaded fit with a sliding block which horizontally slides in the shell; the side surface of the sliding block is provided with a gear, and the upper end and the lower end of the gear are respectively meshed with two racks which horizontally slide in the shell; the two racks are respectively provided with a wedge block B matched with the wedge block A on the same side, and the wedge block B extrudes the wedge block A on the same side to the direction of the limiting arm; the wedge block A and the corresponding wedge block B are provided with structures for limiting the resetting of the wedge block A and the corresponding wedge block B;

three limiting blocks are respectively distributed on the same sides of the two racks at intervals along the length direction, and the distance between every two adjacent limiting blocks is equal to the width of the limiting block; the spacing between the limiting blocks on the upper rack and the spacing between two adjacent limiting blocks on the lower rack are opposite; the upper end and the lower end of a clamping block which vertically slides in the shell are respectively connected with one end, close to the L-shaped plate B, of the rack on the same side through elastic ropes, and each elastic rope bypasses a fixed pulley which guides the elastic rope to pull the clamping block to vertically move;

the inclined surface of the wedge block A is provided with three limit grooves which are uniformly distributed at intervals along the inclined direction of the inclined surface, the lower inner wall of each limit groove is a vertical surface, and the higher inner wall of each limit groove is an inclined surface with the same inclined direction as the inclined surface of the wedge block A; a limiting bulge B is arranged at one end, closest to the limiting arm, of the inclined surface of the wedge block B, and the limiting bulge B is matched with a limiting groove on the corresponding wedge block A to prevent the wedge block A and the wedge block B which are matched with each other from resetting;

two guide seats are vertically and symmetrically arranged in the shell; two trapezoidal guide blocks C are symmetrically arranged on the two wedge blocks A; two trapezoidal guide blocks C on two sides of each wedge block A respectively vertically slide in two trapezoidal guide grooves C on the inner wall of the guide seat on the same side; the upper surface and the lower surface of the sliding block are symmetrically provided with two trapezoidal guide blocks E; the two trapezoidal guide blocks E respectively slide in the trapezoidal guide grooves E on the two guide seats; trapezoidal guide blocks D are mounted on the two racks, and the trapezoidal guide blocks B on the two racks slide in the trapezoidal guide grooves D on the bases on the same side respectively;

each wedge block B is provided with a trapezoidal guide block A; two trapezoidal guide grooves A are symmetrically formed in the top and the bottom of the shell; the trapezoidal guide block A on the upper wedge block B slides in the trapezoidal guide groove A at the top in the shell, and the trapezoidal guide block A on the lower wedge block B slides in the trapezoidal guide groove A at the bottom of the shell; each rack is fixedly connected with a corresponding wedge block B through an L plate A; the upper end and the lower end of the clamping block are symmetrically provided with two L-shaped plates B, and the upper end and the lower end of the clamping block are respectively connected with the corresponding elastic ropes through the corresponding L-shaped plates B.

2. A check assembly for a vehicle as set forth in claim 1, wherein: the fixture block is provided with a trapezoidal guide block B which vertically slides in a trapezoidal guide groove B on the inner wall of the shell; the screw rod is in rotating fit with the circular groove on the side wall of the shell; the inner wall of the circular groove is circumferentially provided with a ring groove; the screw rod is fixedly embedded with a rotating ring which rotates in the ring groove along with the screw rod.

3. A check assembly for a vehicle as set forth in claim 1, wherein: sliding sleeves are respectively nested and slid on the two swing rods, vertical telescopic rods are respectively installed on the two wedge blocks A, and the two wedge blocks A are respectively fixedly connected with outer rods of the corresponding telescopic rods; the tail end of an inner rod of the telescopic rod is hinged with the sliding sleeve on the swing rod on the same side; the two pressure springs are respectively positioned in the two telescopic rods; one end of the pressure spring is connected with the end of the inner rod of the corresponding telescopic rod, and the other end of the pressure spring is connected with the inner wall of the outer rod of the corresponding telescopic rod; the pressure spring is always in a compressed state; two guide blocks are symmetrically arranged on the inner rod of the telescopic rod and vertically slide in two guide grooves on the inner wall of the corresponding outer rod.