Sieve piece variable cross-section automobile steel plate spring assembly

Abstract

The utility model discloses an automobile steel plate spring assembly with a variable-cross-section screen piece, which comprises a plurality of steel plate springs fixed in a stacked manner, a positioning bolt is arranged in the middle of each steel plate spring in a penetrating manner, and a first connecting plate and a second connecting plate are respectively arranged at two ends of each positioning bolt corresponding to the top surface and the bottom surface of each steel plate spring. U-shaped hanging pieces which are symmetrically arranged and provided with downward openings are arranged on the first connecting plate and the second connecting plate in a penetrating mode, baffles which are vertically arranged are arranged on the same sides, corresponding to the U-shaped hanging pieces, of the two sides of the first connecting plate and the two sides of the second connecting plate, one faces of the baffles abut against the side edge of the steel plate spring, and the other faces of the baffles face the U-shaped hanging pieces. The utility model has the characteristics that the disassembly and assembly difficulty during maintenance can be reduced, the secondary assembly difficulty can be reduced, and the structural stability of the assembly can be kept.

Description

Technical Field

[0001] The utility model relates to a screen-piece variable-section automobile leaf spring assembly, belonging to the technical field of leaf springs. Background Art

[0002] The variable-section leaf springs with rolled ears usually used in automobiles are composed of multiple spring leaves superimposed on each other, and the thickness of each variable-section leaf gradually changes from the middle to the two ends (from thick to thin). After being connected and assembled by positioning bolts and nuts, the middle and two ends of each leaf are in contact.

[0003] A Chinese patent application with publication number CN204344772U discloses a variable-section leaf spring assembly with a rolled ear piece. The middle of the three-layer variable-section leaf spring is a straight section, with arc sections on both sides. The two ends of the upper variable-section leaf spring are respectively provided with a bending structure downward and have straight sections extending outward; the two ends of the lower variable-section leaf spring are respectively provided with a bending structure upward and have straight sections extending outward. The two straight sections form mutually fitting surfaces with the two end planes of the middle variable-section leaf spring.

[0004] After connection through positioning bolts, in order to facilitate the assembly and fixation of the leaf spring to the frame, it is usually necessary to fix a U-shaped hanger that cooperates with the frame in the middle of the leaf spring, so as to facilitate the fixed connection between the leaf spring and the frame, and also facilitate disassembly during subsequent maintenance of the leaf spring. Since the U-shaped hanger is fixed by connecting plates located on the top and bottom surfaces of the leaf spring, if the connecting plates are offset during maintenance, it will increase the difficulty of reassembling the U-shaped hanger, making the secondary assembly of the entire leaf spring more laborious. Utility Model Content

[0005] The utility model aims to provide a screen-plate variable-section automobile leaf spring assembly, which solves the problems of the prior art such as the difficulty of secondary assembly.

[0006] The above-mentioned technical purpose of the present invention is mainly solved through the following technical solutions: a screen-plate variable-section automobile leaf spring assembly, comprising a plurality of leaf springs fixed in a stacked shape, a positioning bolt passed through the middle of the leaf spring, and a first connecting plate and a second connecting plate are respectively provided on both ends of the positioning bolt corresponding to the top and bottom surfaces of the leaf spring, the first connecting plate and the second connecting plate are respectively provided with symmetrically arranged U-shaped hangers with openings facing downwards, and vertically arranged baffles are provided on both sides of the first connecting plate and the second connecting plate corresponding to the same side where the U-shaped hangers are located, one side of the baffle abuts against the side of the leaf spring, and the other side of the baffle faces the U-shaped hanger.

[0007] As a further preferred technical solution of the present invention, the curved section of the U-shaped hanger is located above the first connecting plate, and the two opening ends of the U-shaped hanger pass downward through the first connecting plate and the second connecting plate and are connected with bolts.

[0008] As a further preferred technical solution of the present invention, the upper and lower ends of the baffle are both provided with clamping blocks, and the bottom surface of the first connecting plate and the top surface of the second connecting plate are both provided with clamping grooves that cooperate with the clamping blocks.

[0009] As a further preferred technical solution of the present invention, the upper and lower ends of the baffle are both provided with limiting grooves for accommodating the clamping block, and a telescopic spring connected to the clamping block is provided in the limiting groove.

[0010] As a further preferred technical solution of the present invention, the length of the clamping block is greater than the depth of the clamping slot, and the length of the clamping block is less than the depth of the limiting slot.

[0011] As a further preferred technical solution of the present invention; the U-shaped hanger includes a U-shaped rod passing through the first connecting plate and two threaded barrels passing through the second connecting plate, and the two vertical sections of the U-shaped rod extend into the threaded barrel and cooperate with the inner wall thread of the threaded barrel.

[0012] As a further preferred technical solution of the present invention, the lower end of the threaded barrel is located below the second connecting plate and is sleeved with a locking nut, and the locking nut is threadedly connected to the outer wall of the threaded barrel.

[0013] Therefore, the utility model has the characteristics of reducing the difficulty of disassembly and assembly during maintenance, reducing the difficulty of secondary assembly, and maintaining the structural stability of the assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 yes Figure 1 A schematic structural diagram of the connection between the first connecting plate and the second connecting plate;

[0016] Figure 3 yes Figure 2 Structural cross-sectional view;

[0017] Figure 4 yes Figure 1 Exploded diagram of the U-shaped pendant structure. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be further specifically described below with reference to the embodiments and the accompanying drawings.

[0019] like Figure 1-2As shown, a screen-plate variable-section automobile leaf spring assembly comprises a plurality of leaf springs 1 fixed in a stacked shape, a positioning bolt 2 is passed through the middle of the leaf spring 1, and a first connecting plate 31 and a second connecting plate 32 are respectively provided on both ends of the positioning bolt 2 corresponding to the top and bottom surfaces of the leaf spring 1, and the first connecting plate 31 and the second connecting plate 32 are respectively passed through by U-shaped hangers 33 which are symmetrically arranged and with the openings facing downwards, characterized in that: vertically arranged baffles 34 are provided on both sides of the first connecting plate 31 and the second connecting plate 32 corresponding to the same side where the U-shaped hangers 33 are located, one side of the baffle 34 abuts against the side of the leaf spring, and the other side of the baffle 34 faces the U-shaped hanger 33, the bent section of the U-shaped hanger 33 is located above the first connecting plate 31, and the two ends of the opening of the U-shaped hanger 33 pass downward through the first connecting plate 31 and the second connecting plate 32 and are connected with the bolts.

[0020] The above-mentioned screen plate variable-section steel leaf spring is a product currently available on the market and is prior art, and will not be described in detail here. The above-mentioned first connecting plate and second connecting plate are respectively fixed to the top and bottom surfaces of the steel leaf spring by positioning bolts and are parallel to each other. The baffle is vertically arranged between the first connecting plate and the second connecting plate, and the inner end surface of the baffle abuts the side edge of the steel leaf spring. The baffle is limited by the side edge fixed flush with the steel leaf spring to maintain the stable state of the baffle, so that the first connecting plate and the second connecting plate can be limited by the baffle, avoiding the first connecting plate and the second connecting plate from being offset when the steel leaf spring is disassembled, resulting in the hole for the U-shaped hanger to pass through being unable to align, increasing the difficulty of adjustment during installation, making the U-shaped hanger difficult to install, increasing the difficulty of secondary assembly, and enhancing the structural strength and structural stability of the steel leaf spring assembly; the bent section of the above-mentioned U-shaped hanger is located above the first connecting plate to form a fixed space connected to the vehicle frame, so as to facilitate the connection of the fixing rod on the frame and be reliably connected and fixed to the steel leaf spring, enhancing the structural stability after installation, and making disassembly and assembly more convenient through bolt connection.

[0021] like Figure 2-3When the cam 33 is in the closed position, the spring 342 is in the closed position, and the spring 343 is in the closed position, so that the cam 33 can be locked. The plate and the second connecting plate are connected, and the structural strength between the first connecting plate and the second connecting plate is strengthened. The setting of the limiting groove and the telescopic spring allows the baffle to automatically extend into the card slot after the first connecting plate and the second connecting plate are assembled through the action of the telescopic spring on the baffle, thereby realizing the positioning of the baffle and limiting the first connecting plate and the second connecting plate. It can be installed quickly and prevents the first connecting plate and the second connecting plate from falling out. The length of the card block is greater than the depth of the card slot, and the length of the card block is less than the depth of the limiting groove. The setting allows the above-mentioned card block to limit the card slot in the limiting groove, so that the card block is located between the card slot and the limiting groove, forming a limit for the two and maintaining a stable positioning effect.

[0022] like Figure 4 As shown, the U-shaped hanger 33 includes a U-shaped rod 331 inserted on the first connecting plate 31 and two threaded cylinders 332 inserted on the second connecting plate 32. The two vertical sections of the U-shaped rod 331 extend into the threaded cylinder 332 and are threadedly engaged with the inner wall of the threaded cylinder 332. The lower end of the threaded cylinder 332 is located below the second connecting plate 32 and is sleeved with a locking nut 35. The locking nut 35 is threadedly connected to the outer wall of the threaded cylinder 332. After the above-mentioned U-shaped rod is inserted into the first connecting plate, the two threaded cylinders pass through the second connecting plate and are threadedly connected to the vertical sections of the U-shaped rod, so that the screw The threaded cylinder is connected to the second connecting plate, and the distance between the curved section of the U-shaped rod and the first connecting plate can be adjusted by the threaded cylinder to adapt to frames of different sizes and maintain reliable fixation to the frame. The end face of the threaded cylinder opening can abut against the bottom surface of the first connecting plate to achieve the fixation of the distance between the curved section of the U-shaped rod and the first connecting plate, thereby enhancing the structural strength. After the threaded cylinder is fixed, the lower end of the threaded cylinder can be fixed to the bottom of the second connecting plate by a locking nut, thereby achieving longitudinal limitation and positioning of the threaded cylinder, preventing the threaded cylinder from loosening, and easy disassembly and assembly, with a wider range of applications.

[0023] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. A screen plate variable cross-section automobile leaf spring assembly, comprising a plurality of leaf springs (1) fixed in a stacked shape, wherein a positioning bolt (2) is provided through the middle of the leaf spring (1), and a first connecting plate (31) and a second connecting plate (32) are provided at both ends of the positioning bolt (2) corresponding to the top and bottom surfaces of the leaf spring (1), respectively, and the first connecting plate (31) and the second connecting plate (32) are provided with symmetrically arranged U-shaped hangers (33) with openings facing downwards, characterized in that: A vertically arranged baffle (34) is provided on both sides of the first connecting plate (31) and the second connecting plate (32) corresponding to the same side where the U-shaped hanger (33) is located, one side of the baffle (34) abuts against the side of the leaf spring, and the other side of the baffle (34) faces the U-shaped hanger (33).

2. The screen-plate variable-section automobile leaf spring assembly according to claim 1, characterized in that: The bent section of the U-shaped hanger (33) is located above the first connecting plate (31), and the two opening ends of the U-shaped hanger (33) pass downward through the first connecting plate (31) and the second connecting plate (32) to be connected with bolts.

3. The screen-plate variable-section automobile leaf spring assembly according to claim 1, characterized in that: The upper and lower ends of the baffle (34) are both provided with a clamping block (341), and the bottom surface of the first connecting plate (31) and the top surface of the second connecting plate (32) are both provided with a clamping groove (311) that cooperates with the clamping block (341).

4. The screen-plate variable-section automobile leaf spring assembly according to claim 3, characterized in that: The upper end and the lower end of the baffle (34) are both provided with a limiting groove (342) for accommodating the clamping block (341), and a telescopic spring (343) connected to the clamping block (341) is provided in the limiting groove (342).

5. The screen-plate variable-section automobile leaf spring assembly according to claim 4, characterized in that: The length of the clamping block (341) is greater than the depth of the clamping slot (311), and the length of the clamping block (341) is less than the depth of the limiting slot (342).

6. The screen-plate variable-section automobile leaf spring assembly according to claim 1, characterized in that: The U-shaped hanger (33) comprises a U-shaped rod (331) passing through the first connecting plate (31) and two threaded barrels (332) passing through the second connecting plate (32); the two vertical sections of the U-shaped rod (331) extend into the threaded barrel (332) and are threadably engaged with the inner wall of the threaded barrel (332).

7. The screen-type variable-section automobile leaf spring assembly according to claim 6, characterized in that: The lower end of the threaded barrel (332) is located below the second connecting plate (32) and is sleeved with a locking nut (35), and the locking nut (35) is threadedly connected to the outer wall of the threaded barrel (332).

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