CN117507710A

CN117507710A - Double-piece guide arm gasket and assembly positioning structure thereof

Info

Publication number: CN117507710A
Application number: CN202311443933.3A
Authority: CN
Inventors: 胡天宇; 李俊; 贺佳鑫; 陈杰; 柴培洋
Original assignee: Dongfeng Motor Chassis Systems Co Ltd
Current assignee: Dongfeng Motor Chassis Systems Co Ltd
Priority date: 2023-10-31
Filing date: 2023-10-31
Publication date: 2024-02-06

Abstract

The invention relates to the technical field of automotive suspensions, and particularly discloses a double-piece guide arm gasket and an assembly positioning structure thereof, wherein the double-piece guide arm gasket comprises a U-shaped gasket for positioning; the U-shaped gasket comprises an upper plate and a lower plate, and a connecting part is arranged between the upper plate and the lower plate, so that the U-shaped gasket is turned over; the top integrated into one piece of upper plate has the boss, the inboard of boss is provided with the clearance, the bottom of upper plate is located boss department and has seted up the ring channel for the magnetic rubber of installation, the clearance adaptation of magnetic rubber and boss, the invention makes the shape of U type liner obtain the change through adapting unit, the ring channel of setting is again cooperated, through the magnetic rubber of installation, can force the installation location of U type liner when cooperation apron and U type lock combination, utilize the mode of oppression, let magnetic rubber play the effect of increasing friction force, play the effect to U type liner is stable.

Description

Double-piece guide arm gasket and assembly positioning structure thereof

Technical Field

The invention relates to the technical field of automotive suspensions, in particular to a double-piece guide arm gasket and an assembly positioning structure thereof.

Background

In order to solve the complexity of assembling and positioning the double-piece guide arm structure in the composite air suspension system of the commercial vehicle, one common design scheme is to adopt a through hole structure on the center hole of the guide arm. Two guide arms and the upper liner and the lower liner are connected into a whole through a central bolt and a matched nut, so that a guide arm assembly is formed. However, this design also has certain problems.

Wherein, the through hole of the guide arm body easily causes stress concentration phenomenon, thereby possibly leading to the risk of product fracture failure. This is because, during actual use, commercial vehicle suspension systems are subjected to significant loads and vibrations, resulting in large forces and stresses to the pilot arms. The presence of the through holes causes stress to be concentrated near the edges of the holes, thereby reducing the structural strength and durability of the guide arms.

In chinese patent: in a single leaf spring assembly (publication number: CN 213088594U), an upper pad and a lower pad are changed into a U-shaped pad, so that a through hole on a guide arm can be changed into a blind hole on the lower surface, and a positioning pin is assembled through interference of the blind hole to position the U-shaped pad. However, when the structure is applied to the double-piece guide arm, the upper cover plate cannot be positioned during assembly, so that the assembly is difficult, and under severe conditions, the U-shaped bolt and the upper cover plate groove can not be effectively attached, so that the service life of the guide arm is influenced.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a double-piece guide arm gasket and an assembling and positioning structure thereof, which are used for solving the problems proposed by the background art.

The invention provides a double-piece guide arm gasket, which comprises a U-shaped gasket used for positioning;

the U-shaped gasket comprises an upper plate and a lower plate, and a connecting part is arranged between the upper plate and the lower plate, so that the U-shaped gasket is turned over;

the top integrated into one piece of upper plate has the boss, the inboard of boss is provided with the clearance, the bottom of upper plate is located boss department and has seted up the ring channel for the magnetic rubber of installation, the clearance adaptation of magnetic rubber and boss.

As a further improvement of the invention, a positioning hole is formed in the position, corresponding to the boss, of the lower plate, the positioning pin is inserted into the positioning hole, a gasket is arranged at the positioning hole, and the gasket is used for assisting the positioning pin to be firmly inserted.

As a further improvement of the invention, the gasket comprises a ring body, wherein one or more inner clamping blocks are arranged on the inner side of the ring body in an annular array, and the inner clamping blocks are matched with the positioning pins.

As a further improvement of the invention, one or more abutting blocks are arranged on the outer side of the ring body, two symmetrically arranged inserting rods are arranged on one side, close to the ring body, of each abutting block, the abutting blocks are located on the worm in movable connection with the middle part between the two inserting rods, and the worm and the inserting rods extend to the ring body.

As a further improvement of the invention, a cavity is arranged inwards at the outer side of the ring body, a worm wheel is arranged at the inner side of the cavity, and the worm wheel is matched with the worm and is used for driving the worm to rotate so that the abutting block does reciprocating linear motion.

As a further improvement of the invention, sliding grooves are arranged on the inner side of the cavity of the ring body and positioned on the two sides of the worm wheel, and the sliding grooves are matched with the inserting rod and used for keeping the stability of the abutting blocks.

The invention also provides an assembly positioning structure provided with a double-piece guide arm liner, which comprises a guide arm,

the guide arm comprises an arm body I and an arm body II, the arm body I is matched with the arm body II and the U-shaped gasket, a cover plate is arranged at the top of the arm body I, and the bottom of the cover plate is attached to the upper plate of the U-shaped gasket.

As a further improvement of the invention, the cover plate comprises a plate body, wherein two symmetrically arranged grooves are arranged at the top of the plate body, and a U-shaped lock is arranged on the top of the plate body.

As a further improvement of the invention, the bottom of the second arm body is provided with a base plate, the bottom of the base plate is provided with a frame, the bottom of the frame is provided with one or more adapting holes for being combined with the U-shaped lock, and the frame, the base plate and the cover plate are all fixed with the fastener through the U-shaped lock.

As a further improvement of the invention, a step pin is inserted into the bottom of the second arm body, and one end of the step pin is matched with the top of the backing plate.

Compared with the prior art, the invention has the following beneficial effects:

the shape of the U-shaped gasket can be changed through the connecting part, and the U-shaped gasket is matched with the annular groove, so that the U-shaped gasket can be forced to be installed and positioned when the cover plate is matched with the U-shaped lock in combination through the installed magnetic rubber, and the magnetic rubber plays a role in increasing friction force in a compression mode, so that the U-shaped gasket is stable;

after the installation is completed, the set locating holes and gaskets are utilized, the interference effect of the interference blocks and the locating holes can be adjusted through the use of the worm gears and the worm screws, so that the fixing requirements of different locating pins are met, the combination of the U-shaped gasket and the guide arm is better kept stable, the use stability of the U-shaped gasket is improved, the stress concentration caused by the through holes of the guide arm can be avoided, the upper cover plate can be effectively positioned, the assembly is prevented from being difficult, and the service life of a product is further influenced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 is a schematic perspective view of a frame and U-shaped pad and guide arm assembly of the present invention;

FIG. 2 is a schematic diagram of the front view of the combination of the frame and the U-shaped pad and guide arm of the present invention;

FIG. 3 is a schematic view of the cross-sectional structure of the A-A in FIG. 2 according to the present invention;

FIG. 4 is a schematic perspective view of a cover plate and guide arm combination according to the present invention;

FIG. 5 is a schematic diagram of the front view of the combination of the cover plate and the guide arm of the present invention;

FIG. 6 is a schematic perspective view of a U-shaped gasket of the present invention;

FIG. 7 is a schematic diagram of the front view of the U-shaped gasket of the present invention;

FIG. 8 is an enlarged schematic view of the structure of FIG. 7A according to the present invention;

FIG. 9 is an enlarged schematic view of the structure of FIG. 7B according to the present invention;

FIG. 10 is a schematic top view of a U-shaped gasket of the present invention;

FIG. 11 is a schematic view of another modified structure of the U-shaped gasket of the present invention;

FIG. 12 is a schematic top view of the inside of the gasket of the present invention;

FIG. 13 is a schematic view of the outside plan view of the gasket of the present invention;

fig. 14 is a schematic view of a combined three-dimensional structure of a worm gear and worm of the present invention.

In the figure: 1. a cover plate; 2. a guide arm; 3. a U-shaped pad; 4. a backing plate; 5. a U-shaped lock; 6. a fastener; 7. a frame; 8. a step pin; 9. a positioning pin;

11. a groove; 12. a plate body;

21. an arm body I; 22. an arm body II;

31. an upper plate; 32. a boss; 33. a connecting member; 34. positioning holes; 35. a gap; 36. an annular groove; 37. a gasket; 38. a lower plate;

371. a ring body; 372. a worm; 373. inserting a connecting rod; 374. a chute; 375. a collision block; 376. a worm wheel; 377. and an inner clamping block.

Detailed Description

Various embodiments of the present invention are disclosed in the following drawings, which are presented in sufficient detail to provide a thorough understanding of the present invention. However, it should be understood that these physical details should not be used to limit the invention. That is, in some embodiments of the present invention, these physical details are not necessary. Moreover, for the sake of simplicity of illustration, some well-known and conventional structures and components are shown in the drawings in a simplified schematic manner.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

Referring to fig. 4, 5, 6, 7, 8, 9, 10 and 11, many of the conventional composite air suspension systems for commercial vehicles adopt a double-piece guide arm 2 structure, which involves more assembly parts and complex positioning. In order to facilitate the assembly and positioning of the gaskets and related components, the central hole of the guide arm 2 is a through hole, and the single piece of the guide arm 2 and the upper and lower gaskets are connected into a whole through a central bolt and a matched nut to form the guide arm 2 assembly.

The through holes of the body of the guide arm 2 are prone to stress concentration phenomena, which may lead to the risk of product breakage failure. This is because, during actual use, the commercial vehicle suspension system is subjected to great loads and vibrations, resulting in the pilot arm 2 being subjected to great forces and stresses. The presence of the through holes causes stress to be concentrated near the hole edges, thereby reducing the structural strength and durability of the guide arm 2. Based on this, the present application provides a two-piece guide arm 2 pad comprising a U-shaped pad 3 for positioning;

the U-shaped gasket 3 comprises an upper plate 31 and a lower plate 38, and a connecting part 33 is arranged between the upper plate 31 and the lower plate 38, so that the U-shaped gasket 3 turns over;

the top integrated into one piece of upper plate 31 has boss 32, and the inboard of boss 32 is provided with clearance 35, and the bottom of upper plate 31 is located boss 32 department and has seted up ring channel 36 for the magnetic rubber of installation, and magnetic rubber and boss 32's clearance 35 adaptation.

When the U-shaped gasket 3 is mounted, the upper plate 31 and the lower plate 38 are fixed together by the connecting member 33. When assembled, the boss 32 of the U-shaped pad 3 interfaces with a corresponding structure of the guide arm 2 (e.g., the upper cover plate 1). The gap 35 between the boss 32 and the magnetic rubber is adapted so that the magnetic rubber can act to increase friction force during assembly, thereby providing better stability and ensuring firm connection of the U-shaped pad 3 and the guide arm 2.

By the improved design of this embodiment, the assembly and positioning of the pad of the two-piece guide arm 2 becomes simpler and more reliable. The flip structure of the U-shaped gasket 3 and the design of the boss 32 enable the upper plate 31 and the lower plate 38 to be positioned and connected together freely. The cooperation of the boss 32 and the guide arm 2 and the use of magnetic rubber can ensure the stability of the gasket in the assembly process, avoid difficult assembly and further improve the service life and performance of the product.

The lower plate 38 is located the boss 32 of upper plate 31 and corresponds the department and offer locating hole 34, and locating hole 34 department peg graft and have locating pin 9, and locating hole 34 department installs gasket 37, and gasket 37 is used for assisting locating pin 9 peg graft firmly.

The combination of the positioning holes 34 and the gaskets 37 can ensure the firm insertion of the positioning pins 9. The design of the locating holes 34 and the locating pins 9 enables the pads to be accurately located and maintain a good positional relationship. The use of the spacer 37 may provide additional support and securement, increasing the stability of the pad.

The positioning stability of the pad is further enhanced by the improved design of such an embodiment. The positioning holes 34 of the lower plate 38 and the positioning pins 9 are inserted, and the gasket 37 is used for assisting in maintaining a stable positioning state of the gasket in the assembly process, so that the problem of position deviation or looseness is avoided.

The combination of the locating holes 34 and the locating pins 9 ensures that the user can accurately locate the pads in the correct position, while the use of the shims 37 further consolidates the stability of the location.

Referring to fig. 12, 13 and 14, the spacer 37 includes a ring 371, and one or more inner clamping blocks 377 are disposed on the inner side of the ring 371 in an annular array, and the inner clamping blocks 377 are adapted to the positioning pins 9.

The outside of ring 371 is provided with one or more conflict piece 375, and the one side that is close to ring 371 of conflict piece 375 is provided with two and is the plug pole 373 that the symmetry set up, and the worm 372 of middle part swing joint between two plug poles 373 is located to conflict piece 375, and worm 372 and plug pole 373 all extend to ring 371 department.

The outside of ring 371 inwards is provided with the cavity, and worm wheel 376 is installed to the inboard of cavity, and worm wheel 376 and worm 372 adaptation for drive worm 372 rotation makes conflict piece 375 do reciprocal rectilinear motion.

The inner side of the cavity of the ring body 371 is provided with sliding grooves 374 on two sides of the worm wheel 376, and the sliding grooves 374 are matched with the plug-in rod 373 and used for keeping the stability of the abutting blocks 375.

To achieve the drive mechanism, the outside of ring 371 is provided with a cavity inwardly, the inside of which is fitted with a worm gear 376. The worm wheel 376 is adapted to the worm 372 so as to reciprocate the interference block 375 in a straight line by driving the rotation of the worm 372.

In addition, sliding grooves 374 are formed on the inner side of the cavity of the ring 371 on both sides of the worm wheel 376. These sliding grooves 374 are adapted to the insertion rod 373 for maintaining stability of the interference block 375. The design of the chute 374 allows the interference block 375 to remain stably guided and moved during movement, increasing the stability of the entire gasket 37.

Example 2: please refer to fig. 1, 2, 3 and 4

An assembling and positioning structure provided with a gasket of a double-piece guide arm 2 comprises the guide arm 2,

the guiding arm 2 comprises an arm body I21 and an arm body II 22, the arm body I21 and the arm body II 22 are matched with the U-shaped gasket 3, a cover plate 1 is arranged at the top of the arm body I21, and the bottom of the cover plate 1 is attached to the upper plate 31 of the U-shaped gasket 3.

The first arm body 21 and the second arm body 22 of the guide arm 2 are tightly matched with the U-shaped gasket 3. This fit enables the U-shaped pad 3 to be correctly positioned and firmly attached to the guide arm 2. Such a design ensures a good fit between the guide arm 2 and the pad, thereby providing reliable fitting and positioning capabilities.

In the guide arm 2 structure, a cover plate 1 is arranged on the top of the arm body one 21. This cover plate 1 is located on top of the U-shaped gasket 3 and is attached and connected to the upper plate 31 of the U-shaped gasket 3. This design of the tab and connection further enhances the stability of the connection of the guide arm 2 and the pad, ensuring the overall rigidity of the assembled structure.

By the design of this embodiment, the assembly positioning structure of the gasket of the double-piece guide arm 2 is further improved. The adaptation of the first and second arms 21, 22 of the guide arm 2 to the U-shaped pad 3 ensures a correct mounting and positional fixation of the pad. The attachment and connection of the cover plate 1 and the U-shaped gasket 3 increase the stability and rigidity of the whole structure, improve the reliability and stability of the assembly structure, and ensure the firm connection of the guide arm 2 and the gasket.

The cover plate 1 comprises a plate body 12, two symmetrically arranged grooves 11 are formed in the top of the plate body 12, and a U-shaped lock 5 is arranged.

The bottom of the arm body II 22 is provided with the backing plate 4, and frame 7 is installed to the bottom of backing plate 4, and the bottom of frame 7 is provided with one or more adaptation hole for with the combination of U type lock 5, frame 7, backing plate 4 and apron 1 are all fixed with fastener 6 through U type lock 5.

The bottom of the second arm body 22 is inserted with a step pin 8, and one end of the step pin 8 is matched with the top of the backing plate 4.

The cover plate 1 is a plate body 12 mounted on top of the arm body 21 of the guide arm 2. The top of the cover plate 1 is provided with two symmetrically arranged grooves 11 and is provided with a U-shaped lock 5. This design enables the cover plate 1 to be tightly connected with the U-shaped gasket 3, enhancing the stability and reliability of the entire assembly structure.

The bottom of the second arm body 22 is provided with a base plate 4, and the bottom of the base plate 4 is provided with a frame 7. The bottom of the frame 7 is provided with one or more adapter holes for combination with the U-lock 5. By combining the frame 7, the backing plate 4 and the cover plate 1 with the U-lock 5 and fixing them with the fastener 6, the stability and firmness of the whole structure are ensured.

In addition, a step pin 8 is inserted into the bottom of the second arm 22. One end of the step pin 8 fits over the top of the backing plate 4, providing additional support and positioning functions. This design ensures the correct connection and stability between the guide arm 2 and the backing plate 4.

By the design of this embodiment, the assembly positioning structure of the gasket of the double-piece guide arm 2 is further improved. The combination of the groove 11 of the cover plate 1 with the U-shaped lock 5, the backing plate 4, the frame 7 and the step pin 8 enhances the stability, reliability and positioning accuracy of the whole structure.

The foregoing description is only illustrative of the invention and is not to be construed as limiting the invention. Various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, or the like, which is within the spirit and principle of the present invention, should be included in the scope of the claims of the present invention.

Claims

1. A two-piece guide arm pad includes a U-shaped pad for positioning;

the method is characterized in that:

2. A two-piece guide arm pad according to claim 1, wherein: the boss that the lower plate is located the upper plate corresponds the department and has seted up the locating hole, locating hole department grafting has the locating pin, locating hole department installs the gasket, the gasket is used for assisting the locating pin grafting firm.

3. A two-piece guide arm pad according to claim 2, wherein: the gasket comprises a ring body, one or more inner clamping blocks are arranged on the inner side of the ring body in an annular array, and the inner clamping blocks are matched with the positioning pins.

4. A two-piece guide arm pad according to claim 3, wherein: the outside of ring body is provided with one or more conflict piece, the conflict piece is close to one side of ring body and is provided with two plug-in connection poles that are the symmetry setting, the conflict piece is located the middle part swing joint's between two plug-in connection poles worm, worm and plug-in connection pole all extend to ring body department.

5. A two-piece guide arm pad according to claim 3, wherein: the outside of ring body inwards is provided with the cavity, the inboard installation worm wheel of cavity, worm wheel and worm adaptation for drive worm rotation makes the conflict piece do reciprocal rectilinear motion.

6. A two-piece guide arm pad according to claim 3, wherein: the cavity inboard of ring body is provided with the spout in the both sides of worm wheel, spout and grafting pole adaptation for keep the stability of conflict piece.

7. An assembly positioning structure, which is characterized in that: comprising a two-piece guide arm pad according to any of claims 1-6, and a guide arm,

8. A two-piece guide arm pad according to claim 7, wherein: the cover plate comprises a plate body, two grooves which are symmetrically arranged are formed in the top of the plate body, and a U-shaped lock is arranged on the cover plate.

9. A two-piece guide arm pad according to claim 7, wherein: the bottom of the second arm body is provided with a base plate, the bottom of the base plate is provided with a frame, the bottom of the frame is provided with one or more adapting holes for being combined with the U-shaped lock, and the frame, the base plate and the cover plate are fixed with the fastener through the U-shaped lock.

10. A two-piece guide arm pad according to claim 7, wherein: the bottom of the second arm body is inserted with a step pin, and one end of the step pin is matched with the top of the backing plate.