Novel automobile engine piston

Abstract

According to the novel automobile engine piston, two first side blocks are symmetrically arranged on the two sides of a connecting rod bearing bush, two second side blocks are symmetrically arranged on the two sides of a connecting rod big end cover, first screw holes are formed in the second side blocks, and first empty grooves communicated with the first screw holes are formed in the first side blocks; a rotating block is arranged in the first empty groove, a bolt inserted into the first screw hole is arranged on the rotating block, a plurality of limiting grooves are formed in the peripheral side of the rotating block, the rotating block can be limited in the first empty groove through cooperation of the limiting blocks and the limiting grooves, and in the piston movement process, the rotating block cannot be loosened in the first empty groove; therefore, the stability of the connecting rod bearing bush and the connecting rod big end cover after butt joint can be improved, and the stability of the piston during use can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine pistons, in particular to a new type of automobile engine piston. Background Technique

[0002] The piston is a reciprocating part in the cylinder block of an automobile engine. The basic structure of the piston can be divided into a top, a head and a skirt. The main function of the piston is to bear the combustion pressure in the cylinder and transmit this force to the crankshaft through the piston pin and the connecting rod.

[0003] In the process of using the existing automobile engine piston, the general connecting rod bearing shell and the connecting rod big end cap are connected by bolts and nuts. During the movement of the piston, the bolts may become loose, resulting in the separation of the connecting rod big end cap from the connecting rod bearing shell and affecting the use of the piston. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides a new type of automobile engine piston.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solution: A new type of automobile engine piston, including a connecting rod body, a connecting rod bearing shell is provided at the lower end of the connecting rod body, a connecting rod big end cap is provided at the lower end of the connecting rod bearing shell, two first side blocks are symmetrically arranged on both sides of the connecting rod bearing shell, two second side blocks are symmetrically arranged on both sides of the connecting rod big end cap, a first screw hole is provided inside the second side block, a first empty groove communicating with the first screw hole is provided inside the first side block, a rotating block is provided inside the first empty groove, a bolt inserted into the first screw hole is provided on the rotating block, a plurality of limiting grooves are provided on the peripheral side of the rotating block, a second empty groove is provided on one side of the first side block, a clamping groove is provided on the inner wall of the second empty groove, a limiting block is provided inside the second empty groove, two cavities are symmetrically arranged on both sides of the limiting block, a spring is provided inside the cavity, a clamping block matched with the clamping groove is provided at one end of the spring, and the limiting block can be inserted into the limiting groove.

[0008] Further, the improvement of the utility model is that four limiting grooves are provided on the peripheral side of the rotating block, and a cross groove is provided on the rotating block. The four limiting grooves correspond to the four corners of the cross groove.

[0009] Further, the improvement of the utility model is that the length of the limiting groove is greater than the length of the limiting block.

[0010] Further, the improvement of the utility model is that the clamping block is of an isosceles trapezoid structure.

[0011] In order to facilitate the disassembly of the limit block, the improvement of the present utility model is that a second screw hole is provided in the middle part of the limit block.

[0012] Furthermore, the improvement of the present utility model is that the limit block is made of metal material.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the present utility model provides a new type of automobile engine piston, which has the following beneficial effects:

[0015] Push the limit block, and the limit block can penetrate through the second empty slot and be inserted into the limit slot. At this time, the spring can provide an elastic force to the latch, enabling the latch to enter the card slot. Through the cooperation of the latch and the card slot, the limit block can be limited in the second empty slot. Through the cooperation of the limit block and the limit slot, the rotating block can be limited in the first empty slot. During the movement of the piston, the rotating block will not become loose in the first empty slot, thereby improving the stability after the connection between the connecting rod bearing shell and the connecting rod big end cap, and further improving the stability of the piston during use. Description of the drawings

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is the front view of the present utility model Figure 1 ;

[0018] Figure 3 is the Figure 1 local enlarged structural schematic diagram at position A in the present utility model;

[0019] Figure 4 is the installation structural schematic diagram of the latch in the present utility model;

[0020] Figure 5 is the internal structural schematic diagram of the first empty slot and the second empty slot in the present utility model;

[0021] In the figure: 1, connecting rod body; 2, connecting rod bearing shell; 3, connecting rod big end cap; 4, first side block; 5, second side block; 6, bolt; 7, rotating block; 8, first empty slot; 9, second empty slot; 10, limit block; 11, second screw hole; 12, cavity; 13, latch; 14, card slot; 15, limit slot. Specific implementation manners

[0022] 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.

[0023] See also Figures 1-5 The utility model is a new type of automobile engine piston, including a connecting rod body 1, a connecting rod bearing shell 2 is provided at the lower end of the connecting rod body 1, a connecting rod big head cover 3 is provided at the lower end of the connecting rod bearing shell 2, two first side blocks 4 are symmetrically arranged on both sides of the connecting rod bearing shell 2, two second side blocks 5 are symmetrically arranged on both sides of the connecting rod big head cover 3, a first screw hole is arranged inside the second side block 5, a first empty slot 8 connected to the first screw hole is arranged inside the first side block 4, a rotating block 7 is arranged inside the first empty slot 8, a bolt 6 inserted into the first screw hole is arranged on the rotating block 7, a plurality of limiting grooves 15 are arranged on the circumference of the rotating block 7, a second empty slot 9 is arranged on one side of the first side block 4, a clamping slot 14 is arranged on the inner wall of the second empty slot 9, a limiting block 10 is arranged inside the second empty slot 9, two cavities 12 are symmetrically arranged on both sides of the limiting block 10, a spring is arranged inside the cavity 12, one end of the spring is provided with a clamping block 13 matched with the clamping slot 14, and the limiting block 10 can be inserted into the limiting slot 15;

[0024] In this embodiment, the connecting rod big head cover 3 is taken, and the second side block 5 is placed at the lower end of the first side block 4, and then the bolt 6 is inserted into the first empty groove 8, and the rotating block 7 is rotated to insert the bolt 6 into the first screw hole. After the bolt 6 is tightened, the first side block 4 and the second side block 5 are locked by the action of the thread structure, so that the connecting rod big head cover 3 and the connecting rod bearing 2 can be docked and fixed;

[0025] The limiting groove 15 corresponds to the groove on the rotating block 7. The position of the limiting groove 15 can be understood through the groove, so that the limiting groove 15 corresponds to the second empty groove 9, and then the limiting block 10 is pushed, so that the limiting block 10 can pass through the second empty groove 9 and be inserted into the limiting groove 15. At this time, the spring can provide an elastic force to the clamping block 13, so that the clamping block 13 can enter the clamping groove 14. Through the cooperation between the clamping block 13 and the clamping groove 14, the limiting block 10 can be limited in the second empty groove 9. Through the cooperation between the limiting block 10 and the limiting groove 15, the rotating block 7 can be limited in the first empty groove 8. During the movement of the piston, the rotating block 7 will not loosen in the first empty groove 8, thereby improving the stability of the connecting rod bearing 2 and the connecting rod big head cover 3 after docking, and further improving the stability of the piston during use.

[0026] In this embodiment, four limiting grooves 15 are provided on the circumferential side of the rotating block 7. A cross-shaped groove is provided on the rotating block 7, and the four limiting grooves 15 correspond to the four corners of the cross-shaped groove, facilitating the understanding of the location of the limiting grooves 15. The length of the limiting groove 15 is greater than the length of the limiting block 10, enabling the limiting block 10 to be conveniently inserted into the interior of the limiting groove 15.

[0027] Further, the clamping block 13 may be an isosceles trapezoid structure.

[0028] In this embodiment, a second screw hole 11 is provided in the middle part of the limiting block 10. A designated screw is taken and inserted into the second screw hole 11, and then a pulling force is applied to the screw. When the pulling force is greater than the elastic force of the spring, the limiting block 10 can be pulled out of the second empty groove 9. At this time, the clamping block 13 will compress the spring and disengage from the clamping groove 14, and then the rotating block 7 is rotated to pull out the bolt 6 from the first empty groove 8, so that the first side block 4 and the second side block 5 can be disassembled.

[0029] In this embodiment, the limiting block 10 is made of metal, and it can be made of stainless steel. Stainless steel has the advantages of high hardness, strong corrosion resistance, and not being easily damaged.

[0030] In the description of this article, it should be noted that relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. A new type of piston for an automobile engine, comprising a connecting rod body (1), a connecting rod bearing shell (2) is provided at the lower end of the connecting rod body (1), and a connecting rod big end cap (3) is provided at the lower end of the connecting rod bearing shell (2), characterized in that: Two first side blocks (4) are symmetrically arranged on both sides of the connecting rod bearing shell (2), two second side blocks (5) are symmetrically arranged on both sides of the connecting rod big end cap (3), a first screw hole is arranged inside the second side block (5), a first empty groove (8) communicating with the first screw hole is arranged inside the first side block (4), a rotating block (7) is arranged inside the first empty groove (8), a bolt (6) inserted into the first screw hole is arranged on the rotating block (7), a plurality of limiting grooves (15) are arranged on the peripheral side of the rotating block (7), a second empty groove (9) is arranged on one side of the first side block (4), a clamping groove (14) is arranged on the inner wall of the second empty groove (9), a limiting block (10) is arranged inside the second empty groove (9), two cavities (12) are symmetrically arranged on both sides of the limiting block (10), a spring is arranged inside the cavity (12), a clamping block (13) matched with the clamping groove (14) is arranged at one end of the spring, and the limiting block (10) can be inserted into the limiting groove (15).

2. A novel automotive engine piston according to claim 1, characterized in that: Four limiting grooves (15) are arranged on the peripheral side of the rotating block (7), a cross groove is arranged on the rotating block (7), and the four limiting grooves (15) correspond to the four corners of the cross groove.

3. A novel automotive engine piston according to claim 2, characterized in that: The length of the limiting groove (15) is greater than the length of the limiting block (10).

4. A novel automotive engine piston according to claim 3, characterized in that: The clamping block (13) is of an isosceles trapezoid structure.

5. A novel piston for an automotive engine according to claim 4, characterized in that: A second screw hole (11) is arranged in the middle part of the limiting block (10).

6. A novel automotive engine piston according to claim 5, characterized in that: The limiting block (10) is made of metal material.

Images