A stable piston pin with accurate positioning

Abstract

The utility model discloses a stable type piston pin of accurate positioning can, including piston pin body, the symmetry of two rectangular slots has been seted up in the circumference side of piston pin body, and the both ends of piston pin body all have the disc of rotation cooperation, and the opposite inner side of disc all has the screw rod of rotation cooperation, and one end of two screw rods all has the screw bush of thread cooperation, and one end of two screw bushes all is equipped with the frame body, and two frame bodies correspond, and all are equipped with the adjusting assembly in two frame bodies. The utility model discloses through two drive assemblies, drives two two -way screw rods to rotate, makes two two -way screw rods with four clamping plates thread cooperation, changes the telescopic length between four clamping plates and two frame bodies, and four clamping plates extend or retract in piston pin body, through two screw rods, make two screw rods with two screw bushes thread cooperation, drive two screw bushes to carry out horizontal movement, make two frame bodies move mutually, realize the clamping fixed of connecting rod.

Description

Technical Field

[0001] This utility model relates to the field of piston pin technology, specifically to a stable piston pin that can be precisely positioned. Background Technology

[0002] A piston pin is a cylindrical pin installed on the piston skirt. Its middle part passes through the connecting rod small end hole and is used to connect the piston and the connecting rod. Its function is to transmit the gas force on the piston to the connecting rod, or to make the connecting rod small end drive the piston to move together.

[0003] The piston pin passes through the small end bore of the connecting rod to connect the piston and the connecting rod. However, the connecting rod can slip on the piston pin, affecting the transmission of motion between the connecting rod and the piston, thus causing problems with piston movement. Therefore, there is an urgent need to design a stable piston pin that can be precisely positioned to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a stable piston pin that can be precisely positioned, so as to solve the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A precisely positioned stable piston pin includes a piston pin body, two rectangular grooves symmetrically formed on the periphery of the piston pin body, a disc rotatably fitted at both ends of the piston pin body, a screw rotatably fitted on the opposite inner side of the disc, a threaded sleeve threaded at one end of each of the two screws, a frame mounted at one end of each of the two threaded sleeves, the two frames corresponding to each other, and an adjustment component mounted inside each of the two frames.

[0007] The adjustment assembly includes a bidirectional screw rotatably fitted within the frame, two clamping plates threaded to both ends of the bidirectional screw, and a drive assembly mounted on the inner side of the disc and connected to the bidirectional screw for transmission. The clamping plates are slidably fitted within the rectangular groove.

[0008] Furthermore, the drive assembly includes a first bevel gear mounted in the middle of the bidirectional screw, a telescopic rod mounted between the disc and the frame, and a second bevel gear mounted at one end of the telescopic rod and meshing with the first bevel gear.

[0009] Furthermore, the telescopic rod includes a cylinder installed inside the disc, a slide rod slidably fitted at the middle of one end of the cylinder, and a first spring installed between the inner side of the cylinder and the other end of the slide rod.

[0010] Furthermore, one end of the slide rod is fixed to one side of the frame, the second bevel gear is located inside the frame and fixed to one end of the slide rod, and the other end of both the cylinder and the screw is equipped with a turntable.

[0011] Furthermore, a second spring is installed between each of the two discs and the two screw sleeves, and the second spring is sleeved on the periphery of the screw.

[0012] Furthermore, the piston pin body has a first threaded groove on the inner side of each end, and the two discs have a second threaded groove on their circumferences, with the first threaded groove and the second threaded groove being threadedly engaged.

[0013] Furthermore, rubber pads are installed on the inner sides of the four clamping plates, the four rubber pads are corresponding to each other, and the two clamping plates are slidably engaged at the opposite ends of the frame.

[0014] In the above technical solution, the present invention provides a stable piston pin that can be precisely positioned, which has the following advantages:

[0015] 1. The two drive components can drive the two bidirectional screws to rotate, so that the two bidirectional screws are threadedly engaged with the four clamping plates, thereby changing the extension length between the four clamping plates and the two frames. The four clamping plates can be extended or retracted into the piston pin body, which prepares for the next step of clamping and fixing the connecting rod or installing the piston pin body.

[0016] 2. By setting two screws, the two screws are threadedly engaged with two threaded sleeves, thereby driving the two threaded sleeves to move horizontally, causing the two frames to move relative to each other, thus achieving clamping and fixing of the connecting rod, reducing the occurrence of connecting rod slippage, and effectively improving the stability of piston movement. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a structural front view of an embodiment of a precisely positioned stable piston pin according to the present invention.

[0019] Figure 2 This is a schematic diagram of the piston pin body structure provided for an embodiment of a precisely positioned stable piston pin according to the present invention.

[0020] Figure 3This is a schematic diagram of a rectangular groove structure provided for an embodiment of a stable piston pin that can be precisely positioned according to this utility model.

[0021] Figure 4 This is a schematic diagram of a disc structure provided for an embodiment of a precisely positioned stable piston pin according to the present invention.

[0022] 1. Piston pin body; 2. Rectangular groove; 3. Disc; 4. Screw; 5. Screw sleeve; 6. Frame; 7. Double-acting screw; 8. Clamping plate; 9. First bevel gear; 10. Telescopic rod; 11. Second bevel gear; 12. Cylinder; 13. Slide rod; 14. Turntable; 15. Second spring; 16. First threaded groove; 17. Second threaded groove; 18. Rubber pad. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] like Figure 1-4 As shown in the figure, the present invention provides a stable piston pin that can be precisely positioned, including a piston pin body 1. Two rectangular grooves 2 are symmetrically opened on the periphery of the piston pin body 1. Both ends of the piston pin body 1 are rotatably fitted with a disc 3. The inner sides of the discs 3 are rotatably fitted with screws 4. One end of each screw 4 is threadedly fitted with a sleeve 5. One end of each sleeve 5 is fitted with a frame 6. The two frames 6 are corresponding to each other. Each frame 6 is fitted with an adjustment component. The adjustment component includes a bidirectional screw 7 rotatably fitted in the frame 6, two clamping plates 8 threadedly fitted at both ends of the bidirectional screw 7, and a drive component installed on the inner side of the disc 3 and connected to the bidirectional screw 7. The clamping plates 8 are slidably fitted in the rectangular grooves 2.

[0025] In this embodiment, a piston pin body 1 is included, and two rectangular grooves 2 are symmetrically formed on the periphery of the piston pin body 1.

[0026] Specifically, the piston pin body 1 has a first threaded groove 16 on the inner side of each end, and the two discs 3 have a second threaded groove 17 on their circumference. The first threaded groove 16 and the second threaded groove 17 are threaded together. Through the threaded engagement of the first threaded groove 16 and the second threaded groove 17, the two discs 3 and the piston pin body 1 can be installed and fixed together.

[0027] In this embodiment, both ends of the piston pin body 1 are rotatably fitted with a disc 3, and the inner sides of the disc 3 are rotatably fitted with screws 4, and one end of each screw 4 is threaded with a screw sleeve 5.

[0028] Specifically, a second spring 15 is installed between each of the two discs 3 and the two screw sleeves 5. The second spring 15 is sleeved on the periphery of the screw 4. The second spring 15 makes the screw sleeves 5 more stable when moving left and right.

[0029] In this embodiment, a frame 6 is installed at one end of each of the two screw sleeves 5. The two frames 6 are corresponding to each other, and an adjustment component is installed inside each of the two frames 6. The adjustment component includes a bidirectional screw 7 that is rotatably fitted inside the frame 6 and two clamping plates 8 that are threadedly fitted to both ends of the bidirectional screw 7.

[0030] Specifically, rubber pads 18 are installed on the inner sides of the four clamping plates 8, the four rubber pads 18 correspond to each other, and the two clamping plates 8 are slidably fitted at the opposite ends of the frame 6.

[0031] In this embodiment, a drive assembly is installed inside the disk 3 and is connected to the bidirectional screw 7 for transmission, and the clamping plate 8 is slidably fitted in the rectangular groove 2;

[0032] Specifically, the drive assembly includes a first bevel gear 9 installed in the middle of the bidirectional screw 7, a telescopic rod 10 installed between the disc 3 and the frame 6, and a second bevel gear 11 installed at one end of the telescopic rod 10 and meshing with the first bevel gear 9. The bidirectional screw 7 is threadedly engaged with the two clamping plates 8, thereby driving the two clamping plates 8 to move closer to each other. This allows the two clamping plates 8 to retract into the frame 6, making the installation of the piston pin body 1 smoother and reducing the obstruction caused by the clamping plates 8.

[0033] Specifically, the telescopic rod 10 includes a cylinder 12 installed inside the disc 3, a slide rod 13 slidably engaged in the middle of one end of the cylinder 12, and a first spring installed between the inner side of the cylinder 12 and the other end of the slide rod 13. The first spring can drive the slide rod 13 to slide in the middle of one end of the cylinder 12, thereby making the left and right movement of the frame 6 more stable.

[0034] Specifically, one end of the slide rod 13 is fixed to one side of the frame 6, the second bevel gear 11 is located inside the frame 6 and fixed to one end of the slide rod 13, and the other end of the cylinder 12 and the screw 4 are both equipped with turntables 14. Through the two turntables 14, the telescopic rod 10 and the screw 4 can be driven to rotate, in preparation for clamping and fixing the connecting rod in the next step.

[0035] Working steps: 1. When it is necessary to fix the two discs 3 together with the piston pin body 1, first insert the two frames 6 into the interior of the piston pin body 1 and rotate the two discs 3 so that the two first threaded grooves 16 and the two second threaded grooves 17 are threadedly engaged, thereby fixing the two discs 3 and the piston pin body 1 together firmly.

[0036] 2. When it is necessary to connect the piston and the connecting rod, first rotate one of the two turntables 14, so that the two turntables 14 drive the two cylinders 12 to rotate, and the two cylinders 12 drive the two slide rods 13 to rotate synchronously, thereby driving the two second bevel gears 11. At this time, the two second bevel gears 11 mesh with the two first bevel gears 9 to drive the two bidirectional screws 7. At this time, the two bidirectional screws 7 are threadedly engaged with the four clamping plates 8, and drive the two adjacent clamping plates 8 to move closer to each other, so that the four clamping plates 8 retract into the two frames 6 through the two rectangular slots 2. Then, the piston pin body 1 can be connected to the connecting rod by passing through the small end hole of the connecting rod.

[0037] 3. When clamping and fixing the connecting rod, rotate one of the two turntables 14 in the opposite direction, causing the two turntables 14 to drive the two cylinders 12 to rotate in the opposite direction. This, in turn, causes the two cylinders 12 to drive the two sliding rods 13 to rotate in the opposite direction, achieving reverse drive of the two second bevel gears 11. At this time, the two second bevel gears 11 mesh with the two first bevel gears 9 in the opposite direction, achieving reverse drive of the two bidirectional screws 7. The two bidirectional screws 7 are then engaged with the four clamping plates 8 in the opposite direction, driving adjacent clamping plates 8 away from each other. Thus, the four clamping plates 8 extend out of the piston pin body 1 through the two rectangular slots 2, and at this time, the four clamping plates 8 are in sliding engagement. Inside the two frames 6, rotate the two other turntables 14. The two other turntables 14 drive the two screws 4 to rotate, so that the two screws 4 are threadedly engaged with the two threaded sleeves 5. Thus, the two threaded sleeves 5 drive the two frames 6 to move closer to each other synchronously inside the piston pin body 1. At this time, the two frames 6 drive the two slide rods 13 to slide and engage in the middle of one end of the two cylinders 12. At the same time, the two first springs and the two second springs 15 elastically extend and retract synchronously. At this time, the four clamping plates 8 drive the four rubber pads 18 to slide and engage in the two rectangular grooves 2. At the same time, the four rubber pads 18 make contact with the periphery of the connecting rod and clamp and fix it.

[0038] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A precisely positionable stable piston pin, comprising a piston pin body (1), characterized in that, The piston pin body (1) has two rectangular grooves (2) symmetrically opened on its periphery. Both ends of the piston pin body (1) are rotatably fitted with discs (3). The inner sides of the discs (3) are rotatably fitted with screws (4). One end of each screw (4) is threaded with a sleeve (5). One end of each sleeve (5) is fitted with a frame (6). The two frames (6) are opposite to each other. Each frame (6) is fitted with an adjustment component. The adjustment assembly includes a bidirectional screw (7) rotatably fitted inside the frame (6), two clamping plates (8) threadedly fitted to both ends of the bidirectional screw (7), and a drive assembly installed inside the disc (3) and connected to the bidirectional screw (7) in a transmission manner, wherein the clamping plates (8) are slidably fitted inside the rectangular groove (2).

2. The precisely positionable stable piston pin according to claim 1, characterized in that, The drive assembly includes a first bevel gear (9) installed in the middle of the bidirectional screw (7), a telescopic rod (10) installed between the disc (3) and the frame (6), and a second bevel gear (11) installed at one end of the telescopic rod (10) and meshing with the first bevel gear (9).

3. A precisely positionable stable piston pin according to claim 2, characterized in that, The telescopic rod (10) includes a cylinder (12) installed inside the disc (3), a slide rod (13) slidably fitted at the middle of one end of the cylinder (12), and a first spring installed between the inner side of the cylinder (12) and the other end of the slide rod (13).

4. A precisely positionable stable piston pin according to claim 3, characterized in that, One end of the slide rod (13) is fixed to one side of the frame (6), the second bevel gear (11) is located inside the frame (6) and fixed to one end of the slide rod (13), and the other end of the cylinder (12) and the screw (4) are both equipped with a turntable (14).

5. A precisely positionable stable piston pin according to claim 1, characterized in that, A second spring (15) is installed between each of the two discs (3) and the two screw sleeves (5), and the second spring (15) is sleeved on the periphery of the screw (4).

6. A precisely positionable stable piston pin according to claim 1, characterized in that, The piston pin body (1) has a first threaded groove (16) on the inner side of each end, and the two discs (3) have a second threaded groove (17) on their circumference. The first threaded groove (16) and the second threaded groove (17) are threaded together.

7. A precisely positionable stable piston pin according to claim 1, characterized in that, Rubber pads (18) are installed on the inner sides of the four clamping plates (8), the four rubber pads (18) are corresponding to each other, and the two clamping plates (8) are slidably fitted at the opposite ends of the frame (6).

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