Automobile plate spring with high structural strength

Abstract

The utility model relates to the technical field of automobile accessories, and discloses an automobile plate spring with high structural strength, which comprises a plurality of plate spring pieces which are stacked from top to bottom, and a fixing bolt is arranged at the middle end of the inside of the plate spring piece at the top end. The bottom end of the fixing bolt sequentially penetrates through the middle end of the top side of the plate spring piece at the top end to the middle end of the bottom side of the plate spring piece at the bottom end, the bottom end of the outer wall of the fixing bolt is in threaded connection with a nut, and the top side of the nut abuts against the middle end of the bottom side of the plate spring piece at the bottom end. Fixing hoops are arranged on the left side and the right side of the plate spring piece at the top end and the left side and the right side of the plate spring piece at the bottom end. According to the utility model, the connection among the plurality of plate spring pieces can be enhanced, so that the connection among the plate spring pieces is more stable, the strength of the plate spring is enhanced, the plate spring is not easy to scatter during working, the working is more stable, and the safety of an automobile is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an automobile leaf spring with high structural strength. Background Art

[0002] The leaf spring used in automobiles is used for body shock absorption. The main components of the leaf spring are leaf spring leaves, leaf spring clamps and bolts. The length of the leaf spring leaves decreases in a step-like manner. Bolts and leaf spring clamps connect the leaf springs as a whole. The leaf spring leaves on the top layer are the longest, and ears are bent at both ends to install the leaf spring under the body. When the leaf spring is stressed, the elastic force of the leaf spring itself is used to buffer the pressure.

[0003] When assembling a leaf spring, it is necessary to combine and fix multiple leaf springs by means of a fixing hoop or a fixing sleeve to prevent the leaf spring from falling off during operation. However, the existing fixing structure lacks certain strength, which may reduce the fixing effect. Therefore, those skilled in the art provide an automobile leaf spring with high structural strength to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an automobile leaf spring with high structural strength, aiming to improve the problem of insufficient fixed structural strength of the leaf spring in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A vehicle leaf spring with high structural strength comprises a plurality of leaf spring leaves, which are stacked on each other from top to bottom, a fixing bolt is arranged at the inner middle end of the leaf spring leaf at the top, the bottom end of the fixing bolt sequentially passes through the top middle end of the leaf spring leaf at the top to the bottom middle end of the leaf spring leaf at the bottom, a nut is threadedly connected to the bottom end of the outer wall of the fixing bolt, the top side of the nut abuts against the bottom middle end of the leaf spring leaf at the bottom, fixing hoops are arranged on the left and right sides of the leaf spring leaf at the top and the left and right sides of the leaf spring leaf at the bottom, and the fixing hoop at the top and the fixing hoop at the bottom are connected by a fixing mechanism.

[0007] As a further description of the above technical solution:

[0008] The left and right ends of the leaf spring at the top are both provided with ears, a shaft sleeve is provided inside the ears, a plurality of ball holes are opened on the outer wall of the shaft sleeve, and balls are provided inside the ball holes.

[0009] As a further description of the above technical solution:

[0010] The fixing mechanism includes two mounting members 1, two mounting members 2 and two connecting bolts. The two mounting members 1 are respectively fixedly connected to the front and rear sides of the fixing hoop at the top end, and the two mounting members 2 are respectively fixed to the front and rear sides of the fixing hoop at the bottom end. The connecting bolts are arranged inside the mounting member 1, and the bottom ends of the connecting bolts sequentially penetrate the bottom sides of the mounting member 1 and the bottom sides of the mounting member 2. A screw sleeve is arranged at the bottom end of the outer wall of the connecting bolt, and a threaded groove is opened at the inner bottom end of the screw sleeve. The screw sleeve is threadedly connected to the connecting bolt through the threaded groove, and a tightening assembly is arranged between the screw sleeve and the mounting member 2.

[0011] As a further description of the above technical solution:

[0012] The clamping assembly comprises a spring groove, which is arranged on the bottom side of the second mounting member, and a clamping spring is arranged inside the spring groove.

[0013] As a further description of the above technical solution:

[0014] One end of the abutting spring abuts against the top side of the inner wall of the spring slot, and the other end of the abutting spring abuts against the top side of the screw sleeve.

[0015] As a further description of the above technical solution:

[0016] The outer circumference and inner circumference of the ball hole are both provided with raised parts, and the middle end of the ball hole is provided with a recessed part, and the outer wall of the ball is in rolling contact with the recessed part.

[0017] As a further description of the above technical solution:

[0018] The ball holes are arranged longitudinally with the same spacing, and the longitudinally arranged ball holes are evenly surrounded on the outer wall of the sleeve.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the utility model, the connection between the plurality of leaf springs can be strengthened through the cooperation of the fixing hoop, the first mounting member, the second mounting member, the connecting bolt, the screw sleeve and the tightening assembly, thereby making the connection between the leaf springs more stable, thereby strengthening the strength of the leaf spring, making it difficult for the leaf spring to spread out during operation, thereby making the operation more stable and improving the safety of the vehicle.

[0021] 2. In the present invention, by the mutual cooperation of the sleeve, the ball, the recessed portion and the raised portion, the friction between the structure connected to the sleeve can be reduced, the operating efficiency of the system can be improved, and the energy loss can be reduced, thereby improving the performance of the leaf spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1A three-dimensional diagram of an automobile leaf spring with high structural strength proposed by the utility model;

[0023] Figure 2 This is a schematic structural diagram of a fixing hoop of an automobile leaf spring with high structural strength proposed by the utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of a screw sleeve of an automobile leaf spring with high structural strength proposed by the utility model;

[0025] Figure 4 This is a schematic diagram of the shaft sleeve structure of an automobile leaf spring with high structural strength proposed by the utility model;

[0026] Figure 5 The utility model is a schematic structural diagram of a ball bearing hole of an automobile leaf spring with high structural strength.

[0027] Legend:

[0028] 1. Leaf spring; 2. Fixing bolt; 3. Nut; 4. Fixing hoop; 5. Mounting piece 1; 6. Mounting piece 2; 7. Connecting bolt; 8. Screw sleeve; 9. Thread groove; 10. Spring groove; 11. Clamping spring; 12. Ear; 13. Bushing; 14. Ball; 15. Recessed part; 16. Protruding part. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Reference Figure 1-3The utility model provides an embodiment: an automobile leaf spring with high structural strength, comprising a plurality of leaf spring leaves 1, which are stacked on each other from top to bottom, a fixing bolt 2 is arranged at the inner middle end of the top leaf spring leaf 1, and the bottom end of the fixing bolt 2 sequentially penetrates the top middle end of the top leaf spring leaf 1 to the bottom middle end of the bottom leaf spring leaf 1, a nut 3 is threadedly connected at the bottom end of the outer wall of the fixing bolt 2, and the top side of the nut 3 abuts against the bottom middle end of the bottom leaf spring leaf 1, and fixing hoops 4 are arranged on the left and right sides of the top leaf spring leaf 1 and the left and right sides of the bottom leaf spring leaf 1, and the top fixing hoop 4 and the bottom fixing hoop 4 are connected by a fixing mechanism; the fixing mechanism comprises two mounting parts 1 5 and two mounting parts 2 6 and two connecting bolts 7, and the two mounting parts 1 5 are respectively fixed to the connecting parts Connected to the front and rear sides of the top fixing hoop 4, two mounting parts 2 6 are respectively fixed to the front and rear sides of the bottom fixing hoop 4, a connecting bolt 7 is arranged inside the mounting part 1 5, and the bottom end of the connecting bolt 7 passes through the bottom side of the mounting part 1 5 and the bottom side of the mounting part 2 6 in sequence, a screw sleeve 8 is arranged at the bottom end of the outer wall of the connecting bolt 7, a thread groove 9 is arranged at the inner bottom end of the screw sleeve 8, the screw sleeve 8 is threadedly connected with the connecting bolt 7 through the thread groove 9, and a tightening assembly is arranged between the screw sleeve 8 and the mounting part 2 6; the tightening assembly includes a spring groove 10, the spring groove 10 is arranged on the bottom side of the mounting part 2 6, and a tightening spring 11 is arranged inside the spring groove 10; one end of the tightening spring 11 is abutted on the top side of the inner wall of the spring groove 10, and the other end of the tightening spring 11 is abutted on the top side of the screw sleeve 8;

[0031] Specifically, the leaf spring 1 is made of steel, has certain toughness and elasticity, and has certain strength to extend the service life of the leaf spring. The top specification of the screw sleeve 8 is the same as the specification of the spring groove 10, so that the top of the screw sleeve 8 can be inserted into the spring groove 10, so that the top of the screw sleeve 8 can be against the spring 11. When fixing the fixing hoop 4, the fixing hoop 4 is sleeved on the top leaf spring piece 1 and the bottom leaf spring piece 1, and the mounting piece 1 5 and the mounting piece 2 6 are aligned to make them flush, and then the connecting bolt 7 is passed through the mounting piece 1 5 and the mounting piece 2 6, and then the screw sleeve 8 is screwed onto the bottom end of the connecting bolt 7, and tightened on the connecting bolt 7 through the thread groove 9, and the top end of the screw sleeve 8 is inserted into the spring groove 10, so that the top end of the screw sleeve 8 presses against the tightening spring 11 in the spring groove 10 to compress it, and the tightening spring 11 resets to generate a certain force according to its own elasticity, and presses against the top end of the screw sleeve 8 in the opposite direction, so that the thread groove 9 in the screw sleeve 8 and the thread on the connecting bolt 7 are engaged, thereby increasing friction and increasing the strength of the connection.

[0032] Reference Figure 1 , Figure 4 and Figure 5, the left and right ends of the top leaf spring 1 are both provided with ears 12, a sleeve 13 is provided inside the ears 12, a plurality of ball holes are opened on the outer wall of the sleeve 13, and balls 14 are provided inside the ball holes; protrusions 16 are provided on the outer and inner peripheries of the ball holes, a recess 15 is provided at the middle end of the ball holes, and the outer wall of the ball 14 is in rolling contact with the recess 15; the ball holes are arranged longitudinally with the same spacing, and the longitudinally arranged ball holes are evenly surrounded on the outer wall of the sleeve 13;

[0033] Specifically, when the structure connected to the sleeve 13 rotates inside the sleeve 13, the ball 14 rolls in contact with it, and the ball 14 rolls in the ball hole, thereby reducing friction and reducing wear on the connection part. The ball 14 is clamped in the raised portions 16 on the inner and outer peripheries and moves in the space formed by the recessed portions 15. The raised portions 16 limit the maximum diameter of the outer periphery of the ball 14 to prevent the ball 14 from detaching from the sleeve 13. Lubricating oil can be dripped into the sleeve 13 to further improve the effect of reducing friction, and the ball 14 can be maintained to prevent rust and corrosion on the ball 14 and the ball hole.

[0034] Working principle: When assembling multiple leaf springs 1, combine the multiple leaf springs 1 according to the specifications, pass the fixing bolts 2 through each leaf spring 1 from top to bottom in turn, tighten the nut 3 on the fixing bolt 2 to make it press against the leaf spring 1 at the bottom end for one layer of fixation, then sleeve the fixing hoop 4 on the top leaf spring 1 and the bottom leaf spring 1, align the mounting piece 1 5 and the mounting piece 2 6 to make them flush, then pass the connecting bolt 7 through the mounting piece 1 5 and the mounting piece 2 6, then screw the screw sleeve 8 onto the bottom end of the connecting bolt 7, tighten it on the connecting bolt 7 through the thread groove 9, and insert the top end of the screw sleeve 8 into the spring groove 10, so that the top end of the screw sleeve 8 presses against the pressing spring 11 in the spring groove 10 to compress it, and the pressing spring 11 resets to generate a certain force according to its own elasticity, and presses against the top end of the screw sleeve 8 in the opposite direction, so that the thread groove 9 in the screw sleeve 8 and the thread on the connecting bolt 7 are engaged, increasing friction, increasing the strength of its connection, and performing two-layer fixation. When the structure connected to the sleeve 13 rotates inside the sleeve 13, the ball 14 rolls in contact with it. The ball 14 rolls in the ball hole, thereby reducing friction and reducing wear on the connecting part. The ball 14 is clamped in the raised portions 16 on the inner and outer peripheries and moves in the space formed by the recessed portion 15. The raised portion 16 limits the maximum diameter of the outer periphery of the ball 14 to prevent the ball 14 from escaping from the sleeve 13.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automobile leaf spring with high structural strength, comprising a plurality of leaf spring leaves (1), characterized in that: A plurality of leaf springs (1) are stacked on top of each other from top to bottom, a fixing bolt (2) is arranged at the inner middle end of the leaf spring (1) at the top, the bottom end of the fixing bolt (2) sequentially passes through the middle end of the top side of the leaf spring (1) to the middle end of the bottom side of the leaf spring (1) at the bottom, a nut (3) is threadedly connected to the bottom end of the outer wall of the fixing bolt (2), the top side of the nut (3) abuts against the middle end of the bottom side of the leaf spring (1) at the bottom, a fixing hoop (4) is arranged on the left and right sides of the leaf spring (1) at the top and the left and right sides of the leaf spring (1) at the bottom, and the fixing hoop (4) at the top and the fixing hoop (4) at the bottom are connected via a fixing mechanism.

2. The automotive leaf spring with high structural strength according to claim 1, characterized in that: The left and right ends of the leaf spring (1) at the top are both provided with ears (12), a shaft sleeve (13) is provided inside the ears (12), a plurality of ball bearing holes are provided on the outer wall of the shaft sleeve (13), and balls (14) are provided inside the ball bearing holes.

3. The automotive leaf spring with high structural strength according to claim 1, characterized in that: The fixing mechanism comprises two mounting members (5), two mounting members (6) and two connecting bolts (7). The two mounting members (5) are respectively fixedly connected to the front and rear sides of the fixing hoop (4) at the top, and the two mounting members (6) are respectively fixed to the front and rear sides of the fixing hoop (4) at the bottom. The connecting bolts (7) are arranged inside the mounting member (5). The bottom ends of the connecting bolts (7) pass through the bottom sides of the mounting member (5) and the mounting member (6) in sequence. A screw sleeve (8) is arranged at the bottom end of the outer wall of the connecting bolt (7). A thread groove (9) is arranged at the inner bottom end of the screw sleeve (8). The screw sleeve (8) is threadedly connected to the connecting bolt (7) through the thread groove (9). A tightening component is arranged between the screw sleeve (8) and the mounting member (6).

4. The automotive leaf spring with high structural strength according to claim 3, characterized in that: The clamping assembly comprises a spring groove (10), the spring groove (10) is opened on the bottom side of the second mounting member (6), and a clamping spring (11) is arranged inside the spring groove (10).

5. The automotive leaf spring with high structural strength according to claim 4, characterized in that: One end of the abutting spring (11) abuts against the top side of the inner wall of the spring slot (10), and the other end of the abutting spring (11) abuts against the top side of the screw sleeve (8).

6. The automotive leaf spring with high structural strength according to claim 2, characterized in that: The outer circumference and inner circumference of the ball hole are both provided with raised portions (16), the middle end of the ball hole is provided with a recessed portion (15), and the outer wall of the ball (14) is in rolling contact with the recessed portion (15).

7. The automotive leaf spring with high structural strength according to claim 2, characterized in that: The ball holes are arranged longitudinally at the same interval, and the longitudinally arranged ball holes are evenly surrounded on the outer wall of the shaft sleeve (13).

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