Composite piston pin for internal combustion engine

Abstract

The utility model relates to the technical field of composite piston pins, in particular to a composite piston pin for an internal combustion engine, which comprises a pin shaft main body, two fixed connecting pieces, a heat dissipation reinforcing piece and a fixed component, the fixed component comprises an assembly ring, two fixed structures and a shaft sleeve piece, and the heat dissipation reinforcing piece is inserted into the pin shaft main body. Then operating pieces on the locking frames on the two sides of the pin shaft body are operated, the operating pieces are twisted to drive the connecting blocks to be matched with limiting of the guiding pieces, the arc-shaped locking blocks on the two sides abut against assembling rings on the heat dissipation reinforcing pieces, and then auxiliary fixing of the heat dissipation reinforcing pieces can be completed. And the heat dissipation reinforcing piece is directly sleeved in the pin shaft main body and is not fixed, so that the heat dissipation reinforcing piece can be loosened in the use process, and the subsequent normal work is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of composite piston pins, in particular to a composite piston pin for an internal combustion engine. Background Art

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

[0003] The prior art (CN218818098U) discloses a composite piston pin for an internal combustion engine, including a pin shaft body. The pin shaft body is a hollow tube structure. A self-lubricating sleeve is sleeved at the center of the pin shaft body. A heat dissipation reinforcement member is sleeved on the inner wall of the pin shaft body. The heat dissipation reinforcement member includes an outer support body, a central support body and a plurality of supporting heat sinks. The heat dissipation reinforcement member sleeved on the inner wall of the pin shaft body efficiently absorbs the friction heat generated during operation, and the heat dissipation area is increased by the plurality of supporting heat sinks on the heat dissipation reinforcement member, thereby improving the overall heat dissipation effect.

[0004] However, in the above manner, the heat dissipation reinforcement member is directly sleeved in the pin shaft body without being fixed, and may become loose during use, thus affecting subsequent normal operation. Utility Model Content

[0005] The utility model aims to provide a composite piston pin for an internal combustion engine, aiming to solve the problem that the heat dissipation reinforcement member of the existing composite piston pin for an internal combustion engine is directly sleeved in the pin shaft body without being fixed, which may become loose during use and affect subsequent normal operation.

[0006] To achieve the above-mentioned purpose, the utility model provides a composite piston pin for an internal combustion engine, comprising a pin shaft body, two fixed connecting parts, a heat dissipation reinforcement part and a fixing assembly, wherein the two fixed connecting parts are respectively located at both ends of the pin shaft body; the heat dissipation reinforcement part is located inside the pin shaft body,

[0007] The fixing assembly includes a mounting ring, two fixing structures and a shaft kit;

[0008] The assembly ring is fixedly connected to the heat dissipation reinforcement member and is located on one side of the heat dissipation reinforcement member; the two fixed structures are respectively located on both sides of the pin shaft body; the fixed structure includes a locking frame, an operating member, a connecting block, a guide member and an arc-shaped locking block, the locking frame is fixedly connected to the pin shaft body and is located on one side of the pin shaft body; the operating member is arranged on one side of the locking frame; the operating member is arranged on one side of the locking frame; the connecting block is fixedly connected to the operating member and is located on one side of the operating member; the guide member is arranged between the locking frame and the connecting block; the arc-shaped locking block is fixedly connected to the connecting block and is located on one side of the connecting block; the shaft kit is located on one side of the pin shaft body.

[0009] Among them, the operating part includes a locking screw, a hidden knob and a telescopic rod, the locking screw is rotatably connected to the locking frame and is located on one side of the locking screw; the hidden knob is fixedly connected to the locking screw, rotatably connected to the locking frame, and is located on one side of the locking screw; the telescopic rod is threadedly connected to the locking screw, fixedly connected to the connecting block, and is located on one side of the locking screw.

[0010] Wherein, the guide member includes a guide sleeve and a guide rod, the guide sleeve is fixedly connected to the locking frame and is located on one side of the locking frame; the guide rod is slidably connected to the guide sleeve and fixedly connected to the connecting block and is located on one side of the guide sleeve.

[0011] The shaft kit includes a self-lubricating sleeve and a groove ring. The self-lubricating sleeve is located on one side of the pin shaft body. The groove ring is fixedly connected to the self-lubricating sleeve and is located inside the self-lubricating sleeve.

[0012] Wherein, the fixing structure further includes a reinforcement member, and the reinforcement member is arranged on one side of the arc-shaped locking block.

[0013] Wherein, the reinforcement comprises a rebound block and a rubber anti-slip layer, the rebound block is fixedly connected to the arc-shaped locking block and is located on one side of the arc-shaped locking block; the rubber anti-slip layer is fixedly connected to the rebound block and is located on one side of the rebound block.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. By providing the assembly ring, the two fixing structures and the shaft kit, when assembling the piston pin as a whole, the heat dissipation reinforcement member is inserted into the pin shaft body, and then the operating members on the locking frames on both sides of the pin shaft body are operated, and the operating members are twisted to drive the connecting blocks to cooperate with the limiting position of the guide member, so that the arc-shaped locking blocks on both sides are abutted against the assembly ring on the heat dissipation reinforcement member to complete the auxiliary fixation of the heat dissipation reinforcement member, and the shaft kit is sleeved on the pin shaft body close to the two fixing structures, and the two fixing connecting members are sleeved on both ends of the pin shaft body to complete the assembly of the piston pin, thereby solving the problem that the heat dissipation reinforcement member of the existing internal combustion engine composite piston pin is directly sleeved in the pin shaft body without being fixed, and may become loose during use, affecting the subsequent normal operation.

[0016] 2. By providing the locking screw, the hidden knob and the telescopic rod, when the heat dissipation reinforcement is inserted into the pin shaft body, a tool is used to operate the hidden knob to rotate the locking screw. The rotation of the locking screw drives the telescopic rod to cooperate with the guide member to drive the connecting block to move. The connecting block drives the arc-shaped locking block to contact the assembly ring on the heat dissipation reinforcement, thereby making it more convenient to drive the arc-shaped locking block to contact the assembly ring.

[0017] 3. By providing the self-lubricating sleeve and the groove ring, the self-lubricating sleeve is sleeved on the pin shaft body for automatic sliding without replenishing lubricating oil, and cooperates with the groove ring to engage with the locking frame, thereby hiding the locking frame and not affecting the subsequent normal assembly.

[0018] 4. By providing the rebound block and the rubber anti-slip layer, when the arc-shaped locking block contacts the assembly ring, the rebound block provides rebound tension and cooperates with the rubber anti-slip layer to increase the friction of the contact surface, so that the arc-shaped locking block is more stable when contacting the assembly ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0020] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0021] Figure 2 It is an overall front view of the first embodiment of the utility model.

[0022] Figure 3 It is an overall cross-sectional view of the first embodiment of the utility model.

[0023] Figure 4 It is an overall cross-sectional view of the second embodiment of the utility model.

[0024] 101-pin shaft body, 102-fixed connecting piece, 103-heat dissipation reinforcement piece, 104-assembly ring, 105-fixed structure, 106-axis kit, 107-locking frame, 108-operating piece, 109-connecting block, 110-guide piece, 111-arc locking block, 112-locking screw, 113-hidden knob, 114-telescopic rod, 115-guide sleeve, 116-guide rod, 117-self-lubricating sleeve, 118-groove ring, 201-reinforcement piece, 202-rebound block, 203-rubber anti-slip layer. DETAILED DESCRIPTION

[0025] The first embodiment of the present application is:

[0026] See also Figure 1-Figure 3 ,in, Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model. Figure 2 It is a front view of the whole of the first embodiment of the utility model. Figure 3 It is an overall cross-sectional view of the first embodiment of the utility model.

[0027] The utility model provides a composite piston pin for an internal combustion engine, comprising a pin shaft body 101, two fixed connecting members 102, a heat dissipation reinforcement member 103 and a fixed assembly, wherein the fixed assembly comprises an assembly ring 104, two fixed structures 105 and a shaft kit 106, wherein the fixed structure 105 comprises a locking frame 107, an operating member 108, a connecting block 109, a guide member 110 and an arc-shaped locking block 111, wherein the operating member 108 comprises a locking screw 112, a hidden knob 113 and a telescopic rod 114, wherein the guide member 110 comprises a guide sleeve 115 and a guide rod 116, wherein the shaft kit 106 comprises a self-lubricating sleeve 117 and a groove ring 118, and the above-mentioned scheme solves the problem that the existing composite piston pin for an internal combustion engine, the heat dissipation reinforcement member 103 is directly sleeved in the pin shaft body 101 without being fixed, and may become loose during use, thereby affecting subsequent normal operation.

[0028] According to this specific embodiment, the two fixed connecting parts 102 are respectively located at the two ends of the pin shaft body 101; the heat dissipation reinforcement part 103 is located inside the pin shaft body 101; the heat dissipation reinforcement part 103 is used to be inserted into the pin shaft body 101, and then fixed by the fixing assembly to complete the assembly of the piston pin.

[0029] Among them, the assembly ring 104 is fixedly connected to the heat dissipation reinforcement member 103 and is located on one side of the heat dissipation reinforcement member 103; the two fixing structures 105 are respectively located on both sides of the pin shaft body 101; the locking frame 107 is fixedly connected to the pin shaft body 101 and is located on one side of the pin shaft body 101; the operating member 108 is arranged on one side of the locking frame 107; the operating member 108 is arranged on one side of the locking frame 107; the connecting block 109 is fixedly connected to the operating member 108 and is located on one side of the operating member 108; the guide member 110 is arranged between the locking frame 107 and the connecting block 109; the arc-shaped locking block 111 is fixedly connected to the connecting block 109 and is located on one side of the connecting block 109; the shaft kit 106 is located on one side of the pin shaft body 101. When assembling the piston pin as a whole, the heat dissipation reinforcement member 103 is fixedly connected to the connecting block 109 and is located on one side of the connecting block 109. The heat reinforcement member 103 is inserted into the pin shaft body 101, and then the operating member 108 on the locking frame 107 on both sides of the pin shaft body 101 is operated, and the operating member 108 is twisted to drive the connecting block 109 to cooperate with the limiting position of the guide member 110, so that the arc-shaped locking blocks 111 on both sides are in contact with the assembly ring 104 on the heat dissipation reinforcement member 103, and the auxiliary fixation of the heat dissipation reinforcement member 103 can be completed. When the shaft kit 106 is sleeved on the pin shaft body 101 close to the two fixing structures 105, the two fixed connecting members 102 are sleeved on both ends of the pin shaft body 101 to complete the assembly of the piston pin, thereby solving the problem that the existing composite piston pin for internal combustion engines, the heat dissipation reinforcement member 103 is directly sleeved in the pin shaft body 101 without being fixed, and may become loose during use, affecting the subsequent normal operation.

[0030] Secondly, the locking screw 112 is rotatably connected to the locking frame 107 and is located on one side of the locking screw 112; the hidden knob 113 is fixedly connected to the locking screw 112, rotatably connected to the locking frame 107, and is located on one side of the locking screw 112; the telescopic rod 114 is threadedly connected to the locking screw 112, and is fixedly connected to the connecting block 109 and is located on one side of the locking screw 112. When the heat dissipation reinforcement member 103 is inserted into When entering the pin shaft body 101, use a tool to operate the hidden knob 113 to rotate the locking screw 112. The rotation of the locking screw 112 drives the telescopic rod 114 to cooperate with the guide member 110 to drive the connecting block 109 to move. The connecting block 109 drives the arc-shaped locking block 111 to contact the assembly ring 104 on the heat dissipation reinforcement member 103, thereby making it more convenient to drive the arc-shaped locking block 111 to contact the assembly ring 104.

[0031] At the same time, the guide sleeve 115 is fixedly connected to the locking frame 107 and is located on one side of the locking frame 107; the guide rod 116 is slidably connected to the guide sleeve 115, and is fixedly connected to the connecting block 109 and is located on one side of the guide sleeve 115. The guide sleeve 115 is used to support the sliding of the guide rod 116, and the guide rod 116 is used to provide a limit for the connecting block 109, so that the connecting block 109 drives the arc-shaped locking block 111 to move more smoothly.

[0032] In addition, the self-lubricating sleeve 117 is located on one side of the pin shaft body 101; the groove ring 118 is fixedly connected to the self-lubricating sleeve 117 and is located inside the self-lubricating sleeve 117; the self-lubricating sleeve 117 is sleeved on the pin shaft body 101 for automatic sliding without adding lubricating oil, and cooperates with the groove ring 118 to engage with the locking frame 107, thereby hiding the locking frame 107 and not affecting the subsequent normal assembly.

[0033] When using the composite piston pin for an internal combustion engine described in this embodiment, when assembling the piston pin as a whole, the heat dissipation reinforcement member 103 is inserted into the pin shaft body 101, and then a tool is used to operate the hidden knobs 113 on the locking frames 107 on both sides of the pin shaft body 101 to rotate the locking screw 112. The rotation of the locking screw 112 drives the telescopic rod 114 to cooperate with the guide member 110 to drive the connecting block 109 to move, and the connecting block 109 drives the arc-shaped locking block 111 to move, so that the arc-shaped locking blocks 111 on both sides are abutted against the assembly ring 104 on the heat dissipation reinforcement member 103. The auxiliary fixation of the heat dissipation reinforcement member 103 can be completed, and then the self-lubricating sleeve 117 is sleeved on the pin shaft body 101 for automatic sliding without adding lubricating oil, and the groove ring 118 is engaged with the locking frame 107 to hide the locking frame 107 so as not to affect the subsequent normal assembly. The two fixed connecting members 102 are sleeved on both ends of the pin shaft body 101 to complete the assembly of the piston pin, thereby solving the problem that the existing composite piston pin for internal combustion engines, the heat dissipation reinforcement member 103 is directly sleeved in the pin shaft body 101 without being fixed, and may become loose during use, affecting the subsequent normal work.

[0034] The second embodiment of the present application is:

[0035] See also Figure 4 ,in, Figure 4 It is an overall cross-sectional view of the second embodiment of the utility model.

[0036] On the basis of the first embodiment, the utility model provides a composite piston pin for an internal combustion engine, wherein the fixing structure 105 further includes a reinforcing member 201 , and the reinforcing member 201 includes a rebound block 202 and a rubber anti-slip layer 203 .

[0037] The reinforcing member 201 is disposed on one side of the arc-shaped locking block 111 , and is used to increase the strength of the arc-shaped locking block 111 when it contacts the assembly ring 104 , so that the arc-shaped locking block 111 is more stable when it contacts the assembly ring 104 .

[0038] Secondly, the rebound block 202 is fixedly connected to the arc-shaped locking block 111 and is located on one side of the arc-shaped locking block 111; the rubber anti-slip layer 203 is fixedly connected to the rebound block 202 and is located on one side of the rebound block 202. When the arc-shaped locking block 111 contacts the assembly ring 104, the rebound block 202 provides a rebound tension that cooperates with the rubber anti-slip layer 203 to increase the friction of the contact surface, so that the arc-shaped locking block 111 is more stable when contacting the assembly ring 104.

[0039] When using the composite piston pin for an internal combustion engine described in this embodiment, when the arc-shaped locking block 111 contacts the assembly ring 104, the rebound block 202 provides rebound tension and cooperates with the rubber anti-slip layer 203 to increase the friction of the contact surface, so that the arc-shaped locking block 111 is more stable when contacting the assembly ring 104.

[0040] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A composite piston pin for an internal combustion engine, comprising a pin body, two fixed connecting parts and a heat dissipation reinforcement part, wherein the two fixed connecting parts are respectively located at both ends of the pin body; the heat dissipation reinforcement part is located inside the pin body; characterized in that: Also included are fixing components; The fixing assembly includes a mounting ring, two fixing structures and a shaft kit; The assembly ring is fixedly connected to the heat dissipation reinforcement member and is located on one side of the heat dissipation reinforcement member; the two fixed structures are respectively located on both sides of the pin shaft body; the fixed structure includes a locking frame, an operating member, a connecting block, a guide member and an arc-shaped locking block, the locking frame is fixedly connected to the pin shaft body and is located on one side of the pin shaft body; the operating member is arranged on one side of the locking frame; the operating member is arranged on one side of the locking frame; the connecting block is fixedly connected to the operating member and is located on one side of the operating member; the guide member is arranged between the locking frame and the connecting block; the arc-shaped locking block is fixedly connected to the connecting block and is located on one side of the connecting block; the shaft kit is located on one side of the pin shaft body.

2. A composite piston pin for an internal combustion engine as claimed in claim 1, characterized in that: The operating part includes a locking screw, a hidden knob and a telescopic rod, the locking screw is rotatably connected to the locking frame and is located on one side of the locking screw; the hidden knob is fixedly connected to the locking screw, rotatably connected to the locking frame, and is located on one side of the locking screw; the telescopic rod is threadedly connected to the locking screw, fixedly connected to the connecting block, and is located on one side of the locking screw.

3. A composite piston pin for an internal combustion engine as claimed in claim 2, characterized in that: The guide member includes a guide sleeve and a guide rod. The guide sleeve is fixedly connected to the locking frame and is located at one side of the locking frame. The guide rod is slidably connected to the guide sleeve and fixedly connected to the connecting block and is located at one side of the guide sleeve.

4. A composite piston pin for an internal combustion engine as claimed in claim 3, characterized in that: The shaft kit comprises a self-lubricating sleeve and a groove ring, wherein the self-lubricating sleeve is located at one side of the pin shaft body; the groove ring is fixedly connected to the self-lubricating sleeve and is located inside the self-lubricating sleeve.

5. A composite piston pin for an internal combustion engine as claimed in claim 1, characterized in that: The fixing structure further comprises a reinforcing member, and the reinforcing member is arranged on one side of the arc-shaped locking block.

6. A composite piston pin for an internal combustion engine as claimed in claim 5, characterized in that: The reinforcement member includes a rebound block and a rubber anti-skid layer. The rebound block is fixedly connected to the arc-shaped locking block and is located on one side of the arc-shaped locking block; the rubber anti-skid layer is fixedly connected to the rebound block and is located on one side of the rebound block.

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