CN113187619B

CN113187619B - Piston for vehicle

Info

Publication number: CN113187619B
Application number: CN202110640214.5A
Authority: CN
Inventors: 钱海
Original assignee: Ningbo Jinke Machinery Manufacturing Co ltd
Current assignee: Ningbo Jinke Machinery Manufacturing Co ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2022-06-07
Anticipated expiration: 2041-06-08
Also published as: CN113187619A

Abstract

The application relates to a piston for vehicles, including the piston body, this internal in-connection of piston has the bolt axle that is used for being connected with the connecting rod, piston body top has been seted up along piston body axis direction and has been run through to the draining passageway of piston body skirt portion, wear to be equipped with the draining pipe in the draining passageway, the draining pipe top is fixed with and is used for sealing draining passageway open-top's draining dish, be provided with seal assembly on the draining dish, the draining pipe lower extreme is provided with control draining passageway upper end opening and opens and close on-off mechanism. This application has the effect that the piston body of being convenient for was dismantled from the cylinder body.

Description

Piston for vehicle

Technical Field

The application relates to the field of automobile pistons, in particular to an automobile piston.

Background

The piston is a reciprocating element in the cylinder block of an automobile engine, and the basic structure of the piston can be divided into a top part, a head part and a skirt part. The piston crown is the main part of the combustion chamber, the shape of which is related to the selected combustion chamber form, the piston crown is often provided with various pits, the specific shape, position and size of which must be adapted to the combustion requirements, and the piston skirt is mainly used for the rotation of the connecting rod.

The Chinese patent with the publication number of CN204941717U discloses an automobile piston, which comprises a piston body, wherein the piston body is cylindrical, the piston body comprises an upper surface, a lower surface and a side ring surface, the upper surface of the piston body is provided with a main mounting hole, the side ring surface of the piston body is provided with a communicating groove communicated with the main mounting hole, the communicating groove is cylindrical, the communicating groove is eccentrically arranged with the axis of the piston body, the periphery of the side ring surface of the piston body is provided with an installation convex part, the periphery of the installation convex part is provided with two circles of sealing ring grooves which are arranged at intervals, the lower part of each sealing ring groove is provided with a circle of installation ring groove, the width of each sealing ring groove is half of that of the installation ring groove, the depth of each sealing ring groove is larger than that of the installation ring groove, each installation ring groove is provided with a groove bottom part, the groove bottom part is provided with a plurality of air holes, the air holes are connected with the main mounting hole, and the air holes, The main mounting hole and the communicating groove form a ventilation flow channel together, and a tooth-shaped mounting part is further arranged on the side annular surface of the piston body.

In view of the above-mentioned related art, the inventor believes that the above-mentioned piston increases the service life of the piston to some extent, and when the engine cylinder is damaged and the piston needs to be pulled out, there is a defect that it is difficult to pull out the piston from the cylinder body due to the decrease of the pressure inside the cylinder body during the process of pulling out the piston.

Disclosure of Invention

In order to facilitate the piston to be pulled out of the cylinder body, the application provides a piston for a vehicle.

The application provides a vehicular piston adopts following technical scheme:

the utility model provides a piston for vehicle, includes the piston body, the plug pin axle that is used for being connected with the connecting rod is connected in the piston body, the intercommunication has been seted up along piston body axis direction in the piston body top the draining passageway of piston body skirt section, wear to be equipped with the draining pipe in the draining passageway, the draining pipe top is fixed with and is used for sealing draining passageway open-top's draining dish, be provided with seal assembly on the draining dish, the draining pipe lower extreme is provided with control draining passageway upper end opening and opens and close on-off mechanism.

Through adopting above-mentioned technical scheme, when needs take out the piston from the cylinder body, act on-off mechanism, make the draining pipe drive draining dish upward movement, draining passageway upper end opening is opened, and oil is discharged from the bottom of draining the passageway, demolising the in-process of piston, and the air makes inside and outside atmospheric pressure reach dynamic balance in entering into the cylinder from draining the passageway to be convenient for pull down the piston from the cylinder body.

Optionally, the top of the piston body is provided with a stepped groove for clamping the oil drainage disc, a sealing groove surrounding the oil drainage channel is formed in a bottom plate of the stepped groove, the sealing assembly comprises a sealing ring fixed on the lower surface of the oil drainage disc and clamped in the sealing groove, and a sealing ring with a sealing effect is fixed on the lower surface of the sealing ring.

Through adopting above-mentioned technical scheme, draining dish butt is in the ladder inslot, and the sealing ring joint is in the seal groove to under the effect of sealing washer, prevent that oil from flowing from draining the passageway.

Optionally, integrated into one piece has the butt ring that encircles the seal groove on the bottom plate in ladder groove, the oil drainage dish lower surface is seted up and is used for the joint the butt groove of butt ring.

Through adopting above-mentioned technical scheme, butt ring joint increases the degree of difficulty that oil flows from draining the passageway in the butt groove, reduces the possibility that oil flows from draining the passageway.

Optionally, a containing groove for containing the oil drainage pipe is formed in a skirt portion of the piston body, the switch mechanism comprises a butting disc fixed to the oil drainage pipe, a butting bolt penetrating through the butting disc is arranged on the butting disc, and the butting bolt is in threaded connection with the butting disc and is in butting connection with the inner wall of the top plate of the containing groove.

Through adopting above-mentioned technical scheme, rotate the butt bolt, make the butt bolt drive butt dish downstream, the in-process pulling draining pipe of butt dish downstream supports tightly at the ladder inslot with the draining dish of connection at the draining pipe top to make the draining dish will drain the oil passageway closed.

Optionally, the oil drainage pipe is sleeved with a butt spring, and the upper end and the lower end of the butt spring are respectively connected to the top plate of the accommodating groove and the butt disc and pull the oil drainage pipe to move upwards.

Through adopting above-mentioned technical scheme, the reversal rotates the butt bolt, makes butt bolt downstream, and butt spring pulling butt dish upward movement, butt dish drive draining pipe and draining dish upward movement, the oil of being convenient for flows out from the cylinder body.

Optionally, be fixed with the block rubber in the draining passageway, the draining pipe is vertical to be run through the block rubber, the block rubber prevents that oil from following draining passageway bottom is discharged, set up on the draining pipe when the draining pipe upward movement, oil enters into the inlet port in the draining pipe, draining pipe bottom is provided with the switch module that makes oil flow.

Through adopting above-mentioned technical scheme, in the oil stream advances the draining passageway, can't continue downstream again, make draining pipe upward movement, upward movement's in-process, the inlet port is outstanding in the block rubber upper surface gradually, and oil enters into in the draining pipe from the inlet port, acts on the switch module, makes oil discharge. The mode that sets up like this is in order to prevent that in the in-process of work, because of sealed infirm leads to oil to enter into in the draining passageway and follow the interior outflow of draining passageway, plays the effect of secondary seal to the device.

Optionally, the draining hole has been seted up to the draining pipe lateral wall, the switch module sets up including sliding in the draining pipe and be used for sealing draining pipe bottom open-ended sealing plug, the sealing plug can slide in the draining pipe to the switching of control draining hole, draining pipe bottom threaded connection has the draining bolt, the draining bolt fastening is in the lower terminal surface of sealing plug and promotion the sealing plug moves in the vertical direction.

Through adopting above-mentioned technical scheme, rotate the draining bolt, make the draining bolt downstream, oil in the draining pipe can be followed and drained in the draining hole to be convenient for the piston body takes out from the cylinder body.

Optionally, a heat conduction groove is axially formed in the piston body, the lower end of the heat conduction groove is communicated with the skirt portion of the piston body, and a heat conduction pipe is fixed to the heat conduction groove.

Through adopting above-mentioned technical scheme, the setting of heat pipe is used for transmitting the inside heat of cylinder body, reduces because of the inside high temperature of cylinder body leads to piston body or cylinder body to produce the possibility that deformation and unable normal work.

Optionally, the piston body is radially provided with a connecting groove, the plug pin shaft is connected in the connecting groove, a clamping groove is formed in the connecting groove, a clamping block which is clamped in the clamping groove and prevents the plug pin shaft from rotating is fixed on the plug pin shaft, and a limiting part which prevents the plug pin shaft from moving axially is arranged at the other end of the plug pin shaft.

Through adopting above-mentioned technical scheme, insert the spread groove with the bolt axle in the tip from the spread groove, make joint block joint to the joint inslot, prevent that the bolt body from rotating, act on the locating part, make the locating part seal the port of spread groove, prevent the bolt axle roll-off in the spread groove.

Optionally, the limiting part is a limiting block in the connecting groove in a threaded connection manner, the limiting block abuts against the end portion of the bolt shaft, and a rotating groove convenient for rotation of the limiting block is formed in the end face, far away from the bolt shaft, of the limiting block.

Through adopting above-mentioned technical scheme, rotate the stopper, make the stopper support the terminal surface at the bolt axle tightly to realize the installation of bolt axle in the spread groove, the installation of the bolt axle of being convenient for is followed and is dismantled.

In summary, the present application includes at least one of the following beneficial technical effects:

when the piston needs to be taken out of the cylinder body, the abutting bolt is rotated, the abutting disc drives the oil drainage pipe and the oil drainage disc to move upwards, oil enters the oil drainage channel, when the oil drainage pipe continues to move upwards, the oil enters the oil drainage hole, the bolt is rotated, the oil drainage hole is opened, and the oil is discharged from the oil drainage hole;

the heat conducting pipe is used for transferring heat inside the cylinder body, and the possibility that the piston body or the cylinder body deforms due to overhigh temperature inside the cylinder body is reduced.

Drawings

Fig. 1 is a sectional view showing a switch mechanism according to an embodiment of the present application.

Fig. 2 is an enlarged schematic structural diagram of a portion a in fig. 1 in an embodiment of the present application.

Fig. 3 is a sectional view for showing a connection manner of the latch shaft according to the embodiment of the present application.

Description of reference numerals: 1. a piston body; 2. a latch shaft; 3. a stepped groove; 4. an oil drainage channel; 5. an oil drain pan; 6. a heat conducting groove; 7. a heat conduction pipe; 8. a sealing groove; 9. a seal ring; 10. a seal ring; 11. a butt joint groove; 12. a butting ring; 13. a storage groove; 14. an oil drain pipe; 15. a butting tray; 16. an abutment bolt; 17. an abutment spring; 18. a rubber block; 19. an oil inlet hole; 20. an oil drainage hole; 21. a sealing plug; 22. an oil drainage bolt; 23. connecting grooves; 24. a clamping groove; 25. a clamping block; 26. a limiting block; 27. the groove is rotated.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a piston for a vehicle. Referring to fig. 1, an automobile-used piston, including connecting piston body 1 in the cylinder body, ladder groove 3 has been seted up along 1 axis direction of piston body to the top of piston body 1, along 1 axis direction of piston body seted up drainage passageway 4 in ladder groove 3, drainage passageway 4 communicates the top and the skirt section of piston body 1, be provided with the oil drain dish 5 that the butt is used for sealing drainage passageway 4 in butt groove 11 in ladder groove 3, the opening and the closure of oil drain dish 5 lateral wall and ladder groove 3's inside wall butt and be used for controlling drainage passageway 4, heat conduction groove 6 has been seted up along the axial in the piston body 1, heat conduction groove 6 lower extreme and piston body 1 skirt section intercommunication, heat conduction groove 6 is fixed with heat pipe 7, heat pipe 7 transmits the skirt section of piston body 1 with the heat, thereby reduce the temperature in the cylinder body.

Referring to fig. 1 and 2, a sealing groove 8 surrounding an oil drainage channel 4 is formed in a bottom plate of the stepped groove 3, a sealing assembly playing a sealing role is arranged on the oil drainage disc 5, the sealing assembly is bonded on a sealing ring 10 in the sealing groove 8 and a sealing ring 9 integrally formed on the lower surface of the oil drainage disc 5, and the sealing ring 9 is connected in the sealing groove 8 in a clamped mode and abuts against the upper surface of the sealing ring 10. Integrated into one piece has the butt ring 12 that encircles seal groove 8 on the bottom plate in ladder groove 3, and butt groove 11 has been seted up to draining 5 lower surfaces of dish, and in 12 joint butt grooves 11 of butt ring for the increase oil enters into the degree of difficulty of draining passageway 4, further strengthens sealedly.

Referring to fig. 1 and 2, piston body 1's skirt portion has been seted up and has been accomodate groove 13, the bottom welding of draining dish 5 has the draining pipe 14 that is located draining passageway 4, draining pipe 14 lower extreme is located and accomodates groove 13, be provided with on the draining pipe 14 and act on drive draining dish 5 and control draining passageway 4 and open and closed on-off mechanism, on-off mechanism is including welding butt dish 15 on draining pipe 14, butt dish 15 axis and the coincidence of draining pipe 14 axis, be provided with the butt bolt 16 that runs through butt dish 15 on the butt dish 15, butt bolt 16 threaded connection is on

butt dish

15, 16 upper end butts of butt bolt are on the roof of accomodating groove 13. The draining pipe 14 is sleeved with an abutting spring 17, the lower end of the abutting spring 17 is welded on the upper surface of the abutting disc 15, the upper end of the abutting spring 17 is welded on a top plate of the accommodating groove 13, and the abutting disc 15 is pulled to move upwards. Rotate butt bolt 16, make butt bolt 16 drive butt dish 15 downstream, draining pipe 14 pulling draining dish 5 is closed with draining 4 upper end openings, and draining passageway 4 closes, and reverse rotation butt bolt 16 moves butt dish 15 upward movement under the effect of butt spring 17, and draining passageway 4 opens.

Referring to fig. 1 and 2, the rubber block 18 is bonded in the oil drainage channel 4, the oil drainage pipe 14 vertically penetrates through the rubber block 18, oil is prevented from flowing out of the lower portion of the oil drainage channel 4, the rubber block 18 is a cylindrical groove matched with the oil drainage channel 4, the upper end face of the rubber block is provided with an inverted conical groove, and the groove enables the oil to be collected towards the position of the oil drainage pipe 14. Oil inlet hole 19 has been seted up on bleeder 14, oil inlet hole 19 is located the below of block rubber 18, when bleeder 14 upward movement, bleeder passage 4 is opened, oil enters into bleeder passage 4, when bleeder 14 continues upward movement, oil enters into bleeder 14 from oil inlet hole 19 in, bleeder hole 20 has been seted up on the inner wall in bleeder 14 below, bleeder hole 20 is located the below of butt joint dish 15, can bear bleeder hole 20 and discharge when oil enters into bleeder 14.

Referring to fig. 1 and 2, be provided with the switch module that control draining hole 20 was opened and is closed in the draining pipe 14, the switch module is including sliding the sealing plug 21 that sets up in draining pipe 14, sealing plug 21 plays sealed effect, prevent that oil from flowing from draining pipe 14 bottom, sealing plug 21 can slide in draining pipe 14, be located draining hole 20 hole top when sealing plug 21, draining hole 20 closes, oil can't be followed draining hole 20 and discharged, be located draining hole 20 below when sealing plug 21, draining hole 20 opens, oil flows out in following draining hole 20. The bottom of the oil drainage pipe 14 is in threaded connection with an oil drainage bolt 22, the upper end of the oil drainage bolt 22 is bonded on the lower end face of the sealing plug 21, and the sealing plug 21 is made to move in the vertical direction by acting on the oil drainage bolt 22, so that the hole oil drainage hole 20 is opened and closed.

Refer to fig. 1 and fig. 3, connecting groove 23 has been radially seted up to 1 lateral wall of piston body, connecting groove 23 and 1 skirt portion of piston body intercommunication, can dismantle in the connecting groove 23 and be connected with

bolt axle

2, 2 perpendicular to piston body's of bolt axle 1 axis just is used for being connected with the connecting rod, two joint grooves 24 have been seted up on connecting groove 23 along length direction's the terminal surface, 2 one end welding of bolt axle has two joint pieces 25 of joint in corresponding joint groove 24, the bolt axle 2 other end is provided with prevents bolt axle 2 along axial motion's locating part, the locating part is the stopper 26 of threaded connection in connecting groove 23, stopper 26 butt is at the tip of bolt axle 2, stopper 26 keeps away from the terminal surface of bolt axle 2 and sets up the stopper 26 pivoted rotation groove 27 of being convenient for.

The implementation principle of the piston for the vehicle in the embodiment of the application is as follows: when the piston body 1 needs to be detached, the abutting bolt 16 is rotated, the oil drain disc 5 moves upwards, oil enters the oil drain channel 4, the abutting bolt 16 continues to rotate, the oil enters the oil drain pipe 14, the oil drain bolt 22 is rotated, the sealing plug 21 moves downwards, the oil drain hole 20 is opened, the oil is discharged from the oil drain hole 20, and air enters the cylinder body, so that the piston is convenient to pull out.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an automobile-used piston, includes piston body (1), be connected with in piston body (1) and be used for bolt axle (2) be connected with the connecting rod, its characterized in that: the piston body (1) top has seted up the intercommunication along piston body (1) axis direction the draining passageway (4) of piston body (1) skirt portion, drain pipe (14) wear to be equipped with in draining passageway (4), drain pipe (14) top is fixed with and is used for sealing draining passageway (4) open-top's draining dish (5), be provided with seal assembly on draining dish (5), drain pipe (14) lower extreme is provided with control draining passageway (4) upper end opening and opens and close on-off mechanism.

2. A vehicular piston according to claim 1, wherein: the top of piston body (1) is seted up and is used for the joint ladder groove (3) of draining dish (5), set up on the bottom plate of ladder groove (3) and encircle sealing groove (8) of draining passageway (4), seal assembly is including fixing draining dish (5) lower surface and joint are in sealing ring (9) in sealing groove (8), sealing ring (9) lower fixed surface has sealing washer (10) that play sealed effect.

3. A vehicular piston according to claim 2, wherein: integrated into one piece has on the bottom plate in ladder groove (3) and encircles butt ring (12) of seal groove (8), draining dish (5) lower surface is seted up and is used for the joint butt groove (11) of butt ring (12).

4. A vehicular piston according to claim 1, wherein: the oil drain pipe is characterized in that a containing groove (13) used for containing the oil drain pipe (14) is formed in the skirt portion of the piston body (1), the switching mechanism comprises a abutting disc (15) fixed to the oil drain pipe (14), a abutting bolt (16) penetrating through the abutting disc (15) is arranged on the abutting disc (15), and the abutting bolt (16) is in threaded connection with the abutting disc (15) and abuts against the inner wall of a top plate of the containing groove (13).

5. The vehicular piston according to claim 4, wherein: the oil drainage pipe (14) is sleeved with a butt spring (17), and the upper end and the lower end of the butt spring (17) are respectively connected to the top plate of the accommodating groove (13) and the butt disc (15) and pull the oil drainage pipe (14) to move upwards.

6. A vehicular piston according to claim 1, wherein: the oil drainage device is characterized in that a rubber block (18) is fixed in the oil drainage channel (4), the oil drainage pipe (14) vertically penetrates through the rubber block (18), the rubber block (18) prevents oil from being discharged from the bottom of the oil drainage channel (4), an oil inlet hole (19) in the oil drainage pipe (14) is formed in the oil drainage pipe (14) when the oil drainage pipe (14) moves upwards, and a switch assembly enabling the oil to flow out is arranged at the bottom of the oil drainage pipe (14).

7. The vehicular piston according to claim 6, wherein: draining hole (20) have been seted up to bleeder line (14) lateral wall, the switch module sets up including sliding in bleeder line (14) and be used for sealing bleeder line (14) bottom open-ended sealing plug (21), sealing plug (21) can slide in bleeder line (14) to control the switching of draining hole (20), bleeder line (14) bottom threaded connection has draining bolt (22), draining bolt (22) are fixed the lower terminal surface of sealing plug (21) promotes sealing plug (21) moves in vertical direction.

8. The vehicular piston according to claim 4, wherein: the piston is characterized in that a heat conduction groove (6) is formed in the piston body (1) along the axial direction, the lower end of the heat conduction groove (6) is communicated with the skirt portion of the piston body (1), and a heat conduction pipe (7) is fixed to the heat conduction groove (6).

9. A vehicular piston according to claim 1, wherein: the piston body (1) has radially seted up spread groove (23), bolt axle (2) are connected in spread groove (23), seted up joint groove (24) in spread groove (23), be fixed with the joint on bolt axle (2) and be in joint groove (24) are interior and prevent bolt axle (2) pivoted joint piece (25), the bolt axle (2) other end is provided with prevents bolt axle (2) along axial motion's locating part.

10. A vehicular piston according to claim 9, wherein: the limiting part is in threaded connection with a limiting block (26) in the connecting groove (23), the limiting block (26) abuts against the end portion of the bolt shaft (2), and a rotating groove (27) convenient for the limiting block (26) to rotate is formed in the end face, far away from the bolt shaft (2), of the limiting block (26).