High-air-tightness piston for automobile

Abstract

The utility model relates to the technical field of automobile pistons, and discloses a high-air-tightness piston for an automobile, which comprises a piston main body, a connecting rod body and a bearing bush I. A piston pin pipe is arranged on the piston main body, the piston pin pipe is connected with the piston main body in a penetrating manner, and a movable ring is arranged at one end of the piston pin pipe. The installation ring is connected with the outer threaded sleeve, the first clamping block and the second clamping block are located on the outer side and the inner side of the end opening of the piston pin pipe respectively, and under the elasticity of the second spring, the two sets of clamping pads fix the end opening of the piston pin pipe. And the movable ring at the other end is twisted again, the movable ring is pulled to be taken down from the outer side of the pin hole, the worker is assisted in taking down the piston pin pipe, a plurality of positioning blocks at the bottom end are embedded into positioning holes formed in the upper end of a second buckle, and accurate installation is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile piston especially relates to a high air tightness piston for automobile. BACKGROUND

[0002] Piston is the machine part that reciprocates in the cylinder block of automobile engine, and automobile refers to the non-track bearing vehicle with four or more than four wheels driven by power, and the main function of piston is to bear the combustion pressure in the cylinder and to transmit the force to the crankshaft through piston pin and connecting rod, in addition, piston also forms the combustion chamber with cylinder cover and cylinder wall.

[0003] The existing automobile piston (announcement number: CN219081720U) has at least the following disadvantages: since the automobile piston main body is connected with the connecting rod through the piston pin, when the piston pin is disassembled, the worker usually needs to use a pointed nose pliers or a press machine to take down the piston pin, so that the operation is not convenient, time-consuming and laborious, and the connecting rod part is easily damaged, thereby shortening the service life of the piston. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a high air tightness piston for automobile.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A high air tightness piston for automobile, including piston main body, connecting rod body and bearing bush one, the piston main body is installed with piston pin tube, the piston pin tube penetrates the connection piston main body, one end of piston pin tube is provided with movable ring, movable ring is fixedly installed with installation ring, installation ring and the outside wall of piston main body are provided with external thread sleeve, external thread sleeve is screwed with the inner wall of installation ring, the outside of movable ring is fixedly provided with fixed block, the movable installation of screw post one is arranged on the fixed block, the one side of card block one is provided with card block two, the screw post one penetrates the connection fixed block, and is screwed with card block one and card block two, the clamping pad of card block one is installed, spring two is fixedly arranged between clamping pad and card block one.

[0007] As a further scheme of the utility model, the external thread sleeve is fixedly connected with the outside wall of the piston main body, the sealing ring is installed between the inside of the movable ring and the piston pin tube, the connecting rod bushing is arranged at the end away from the bearing bush one of the connecting rod body, and the bearing bush two is arranged at the lower end of the bearing bush one.

[0008] As a further scheme of the utility model, the stud two is symmetrically distributed on the bearing shell one, the inner wall of the ring buckle one and the ring buckle two is threadedly connected with the stud two.

[0009] As a further scheme of the utility model, the lower end of the ring buckle one is provided with a positioning block, a spring one is fixedly arranged between the positioning block and the lower end of the ring buckle one, and the stud two is symmetrically distributed on the bearing shell one.

[0010] As a further scheme of the utility model, the stud one is symmetrically distributed on the piston main body, the two ends of the connecting rod body are fixedly connected with the connecting rod bush and the top end of the bearing shell one respectively, and the connecting rod bush is movably connected with the piston pin tube.

[0011] As a further scheme of the utility model, the positioning block is embeddedly connected with the upper end of the ring buckle two, and a plurality of positioning blocks are arranged on the ring buckle one.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. In order to facilitate assembly and disassembly, after the piston pin tube and the connecting rod body are installed to the piston main body, the staff manually twists the movable ring, the mounting ring is connected with the external thread sleeve, the movable ring is fixedly installed outside the pin hole of the piston main body, the stud one is rotated again, the clamping block one and the clamping block two are connected, the clamping block one and the clamping block two are located outside and inside the piston pin tube port respectively, and under the elasticity of the spring two, two sets of clamping pads are fixed to the piston pin tube port, the movable ring is installed on both ends of the piston pin tube, the firmness of the connection is strengthened, when the piston pin tube needs to be taken out, the staff first loosens the fixation of the clamping pad on the piston pin tube port, twists the movable ring at the other end again, rotates the mounting ring and separates the mounting ring from the external thread sleeve, pulls the movable ring to take it down from the outside of the pin hole, and drives the piston pin tube to separate from the pin hole, so that the staff can take down the piston pin tube, and the convenience is improved.

[0014] 2. When the bearing shell one and the bearing shell two are installed, the bearing shell one and the bearing shell two are butt-jointed first, under the elastic action of the spring one, the bottom end of the plurality of positioning blocks is embedded into the positioning hole arranged in the upper end of the ring buckle two, the firmness of the connection of the bearing shell one and the bearing shell two is strengthened, and finally the stud two is rotated, so that the stud two is threadedly connected with the ring buckle one and the ring buckle two simultaneously, thereby connecting and fixing the bearing shell one and the bearing shell two, precise installation is facilitated, and loosening and falling off are prevented. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A three-dimensional structure schematic view of the high-air-tightness piston for automobile is provided in the utility model;

[0016] Figure 2 A piston main body and a movable ring structure schematic view of a high air tightness piston for automobile is provided in the utility model.

[0017] Figure 3 An A place enlarged schematic view of a high air tightness piston for automobile is provided in the utility model.

[0018] Figure 4 A movable ring split schematic view of a high air tightness piston for automobile is provided in the utility model

[0019] Figure 5 A connecting rod body split schematic view of a high air tightness piston for automobile is provided in the utility model

[0020] Figure 6 A B place enlarged schematic view of a high air tightness piston for automobile is provided in the utility model.

[0021] In the drawing: 1, piston main body;101, movable ring;102, installation ring;103, clamp block one;104, spring one;105, fixed block;106, stud one;2, connecting rod body;201, connecting rod bushing;202, ring buckle one;203, ring buckle two;3, bearing one;301, stud two;302, sealing ring;303, external thread sleeve;4, bearing two;5, piston pin tube;6, spring two;7, clamp pad;8, clamp block two;801, positioning block. Specific implementation

[0022] In order to make the technical means, creation characteristics, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0023] In the description of the utility model, it should be pointed out that the directions or position relations indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "another end" and the like are the directions or position relations shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the devices or elements indicated must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "set with", "connection" and so on, should do broad sense understanding, for example "connection", can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be two elements inside the intercommunication, for ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances.

[0025] Reference Figures 1-6 A kind of high gas tightness piston for automobile, including piston main body 1, connecting rod body 2 and bearing shell one 3, piston main body 1 is installed with piston pin tube 5, piston pin tube 5 is connected through piston main body 1, one end of piston pin tube 5 is provided with movable ring 101, movable ring 101 is fixedly installed with installation ring 102, installation ring 102 is provided with external thread sleeve 303 between piston main body 1 outer side wall, external thread sleeve 303 is threadedly connected installation ring 102 inner wall, movable ring 101 outer side is fixedly provided with fixed block 105, fixed block 105 is movably installed with stud one 106, stud one 106 is provided with clamping block one 103, one side of clamping block one 103 is provided with clamping block two 8, stud one 106 is connected through fixed block 105, and stud one 106 is threadedly connected clamping block one 103 and clamping block two 8, clamping block one 103 is installed with clamping pad 7, clamping pad 7 and clamping block one 103 are fixedly provided with spring two 6.

[0026] When using, in order to facilitate assembly and disassembly, staff installs piston pin tube 5 with connecting rod body 2 to piston main body 1 after, manually twists movable ring 101, makes installation ring 102 connect with external thread sleeve 303, clamps movable ring 101 and is fixedly installed at the outside of the pin hole of piston main body 1, rotates stud one 106 again, penetrates fixed block 105, connects clamping block one 103 and clamping block two 8, so that clamping block one 103 and clamping block two 8 are located at the outside and the inside of the port of piston pin tube 5 respectively, and under the elasticity of spring two 6, two sets of clamping pad 7 are fixed to the port of piston pin tube 5, movable ring 101 is installed at both ends of piston pin tube 5, strengthens the firmness of connection, when piston pin tube 5 needs to be taken out, first loosens the fixation of one side clamping pad 7 to the port of piston pin tube 5, twists the movable ring 101 of the other end again, rotates installation ring 102 and separates from external thread sleeve 303, pulls movable ring 101 and takes down from the outside of the pin hole, drives piston pin tube 5 to separate from the pin hole, assists staff to take down piston pin tube 5, improves convenience.

[0027] In the embodiment, external thread sleeve 303 is fixedly connected with the outer side wall of piston main body 1, and a sealing ring 302 is installed between the inside of movable ring 101 and piston pin tube 5, the end of connecting rod body 2 away from bearing shell one 3 is provided with a connecting rod bushing 201, and the lower end of bearing shell one 3 is provided with bearing shell two 4.

[0028] In use, when the bearing shell 3 and the bearing shell 4 are installed, the bearing shell 3 and the bearing shell 4 are first butt-jointed, a plurality of positioning blocks 801 at the bottom end are embedded into the positioning holes formed at the upper end of the ring buckle 203 under the elastic action of the spring 104, the tightness of the connection between the bearing shell 3 and the bearing shell 4 is enhanced, finally the stud 301 is rotated to simultaneously threadedly connect the ring buckle 202 and the ring buckle 203, thereby connecting and fixing the bearing shell 3 and the bearing shell 4, facilitating precise installation and preventing loosening and falling off.

[0029] In the embodiment, the stud 301 is arranged on the bearing shell 3, the sealing ring 302 is fixedly connected to the inner wall of the movable ring 101, the ring buckle 202 is fixedly installed on one side of the bearing shell 3, the ring buckle 203 is fixedly arranged on one side of the bearing shell 4, and the stud 301 is threadedly connected to the inner walls of the ring buckle 202 and the ring buckle 203.

[0030] In use, the sealing ring 302 is arranged at the connection between the inner wall of the movable ring 101 and the piston pin tube 5, the sealing ring 302 is mainly made of polytetrafluoroethylene rubber material and has high temperature resistance, and the sealing effect of the connection is enhanced.

[0031] In the embodiment, the positioning block 801 is arranged at the lower end of the ring buckle 202, and the spring 104 is fixedly arranged between the positioning block 801 and the lower end of the ring buckle 202, and the studs 301 are symmetrically distributed on the bearing shell 3.

[0032] In use, the positioning block 801 is clamped with the positioning hole of the ring buckle 203 through the spring 104, the bearing shell 3 and the bearing shell 4 are quickly butt-jointed, and the firmness of installation is enhanced.

[0033] In the embodiment, the studs 106 are symmetrically distributed on the piston main body 1, the two ends of the connecting rod body 2 are respectively fixedly connected to the connecting rod bushing 201 and the top end of the bearing shell 3, and the connecting rod bushing 201 is movably connected to the piston pin tube 5.

[0034] In use, the staff rotates the stud 106 to penetrate the stud 105, connects the clamping block 103 and the clamping block 8, and makes the two groups of clamping blocks respectively located at the outer side and the inner side of the port of the piston pin tube 5, and finally fixes the port of the piston pin tube 5 through the two groups of clamping pads 7 under the elasticity of the spring 6.

[0035] In the embodiment, the positioning block 801 is embedded into the upper end of the ring buckle 203, and a plurality of positioning blocks 801 are arranged on the ring buckle 202.

[0036] In use, the movable ring 101 is detached from the piston main body 1 by rotating the movable ring 101 to simultaneously separate the installation ring 102 from the external thread sleeve 303, thereby improving the convenience of disassembly and installation.

[0037] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects: in order to facilitate assembly and disassembly, after the piston pin tube 5 and the connecting rod body 2 are installed into the piston main body 1, the staff manually twists the movable ring 101, makes the mounting ring 102 connect with the outer thread sleeve 303, fixes and installs the movable ring 101 at the outside of the pin hole of the piston main body 1, rotates the stud one 106 again, penetrates the fixed block 105, connects the clamping block one 103 and the clamping block two 8, makes the clamping block one 103 and the clamping block two 8 be respectively located at the outside and the inside of the port of the piston pin tube 5, and under the elasticity of the spring two 6, makes two groups of clamping pads 7 fix the port of the piston pin tube 5, the movable ring 101 is installed at both ends of the piston pin tube 5, strengthens the firmness of connection, when the piston pin tube 5 needs to be taken out, first loosens the fixation of the clamping pad 7 to the port of the piston pin tube 5, twists the movable ring 101 at the other end again, rotates the mounting ring 102 and separates from the outer thread sleeve 303, pulls down the movable ring 101 from the outside of the pin hole, drives the piston pin tube 5 to separate from the pin hole, assists the staff to take down the piston pin tube 5, improves the convenience, when the bearing shell one 3 and the bearing shell two 4 are installed, first makes the bearing shell one 3 and the bearing shell two 4 butt joint, under the elastic action of the spring one 104, makes the several positioning blocks 801 at the bottom embed the positioning hole at the upper end of the ring buckle two 203, strengthens the tightness of the connection of the bearing shell one 3 and the bearing shell two 4, finally rotates the stud two 301 again, makes the stud two 301 threadedly connect the ring buckle one 202 and the ring buckle two 203 simultaneously, thereby connects and fixes the bearing shell one 3 and the bearing shell two 4, is convenient for accurate installation, prevents loosening and falling off.

[0038] The basic principles and main features of the utility model and the advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification only illustrate the principles of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-air-tightness piston for automobiles, comprising a piston body (1), a connecting rod body (2) and a bearing bush (3), characterized in that: A piston pin tube (5) is installed on the piston body (1), and the piston pin tube (5) is connected to the piston body (1). A movable ring (101) is provided at one end of the piston pin tube (5), and a mounting ring (102) is fixedly installed on the movable ring (101). An external threaded sleeve (303) is provided between the mounting ring (102) and the outer wall of the piston body (1), and the external threaded sleeve (303) is threadedly connected to the inner wall of the mounting ring (102). A fixed block is fixedly provided on the outer side of the movable ring (101). (105), a stud one (106) is movably installed on the fixed block (105), a clamping block one (103) is provided on the stud one (106), a clamping block two (8) is provided on one side of the clamping block one (103), the stud one (106) passes through the fixed block (105) and is threadedly connected to the clamping block one (103) and the clamping block two (8), a clamping pad (7) is installed on the clamping pad (7), and a spring two (6) is fixedly provided between the clamping pad (7) and the clamping block one (103).

2. The high airtightness piston for automobile according to claim 1, characterized in that: The external threaded sleeve (303) is fixedly connected to the outer wall of the piston body (1); a sealing ring (302) is installed between the interior of the movable ring (101) and the piston pin tube (5); a connecting rod bushing (201) is provided at one end of the connecting rod body (2) away from the bearing shell 1 (3); and a bearing shell 2 (4) is provided at the lower end of the bearing shell 1 (3).

3. The high airtightness piston for automobile according to claim 2, characterized in that: The bearing shell 1 (3) is provided with a stud 2 (301), the sealing ring (302) is fixedly connected to the inner wall of the movable ring (101), a ring buckle 1 (202) is fixedly installed on one side of the bearing shell 1 (3), a ring buckle 2 (203) is fixedly provided on one side of the bearing shell 2 (4), and the stud 2 (301) is threadedly connected to the inner wall of the ring buckle 1 (202) and the ring buckle 2 (203).

4. The high airtightness piston for automobile according to claim 3, characterized in that: A positioning block (801) is installed at the lower end of the ring buckle (202), a spring (104) is fixedly arranged between the positioning block (801) and the lower end of the ring buckle (202), and the studs (301) are symmetrically distributed on the bearing bush (3).

5. The high airtightness piston for automobile according to claim 2, characterized in that: The stud 1 (106) is symmetrically distributed on the piston body (1), and the two ends of the connecting rod body (2) are respectively fixedly connected to the connecting rod bushing (201) and the top end of the bearing shell 1 (3), and the connecting rod bushing (201) is movably connected to the piston pin tube (5).

6. The high airtightness piston for automobiles according to claim 4, characterized in that: The positioning block (801) is embedded in and connected to the upper end of the second ring buckle (203), and a plurality of positioning blocks (801) are installed on the first ring buckle (202).

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