CN104389679A - Engine and piston connecting rod group thereof - Google Patents
Engine and piston connecting rod group thereof Download PDFInfo
- Publication number
- CN104389679A CN104389679A CN201410667592.2A CN201410667592A CN104389679A CN 104389679 A CN104389679 A CN 104389679A CN 201410667592 A CN201410667592 A CN 201410667592A CN 104389679 A CN104389679 A CN 104389679A
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- piston
- connecting rod
- hole
- piston pin
- pin
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Abstract
The invention discloses a piston connecting rod group of an engine. The piston connecting rod group comprises a piston (1), a connecting rod (3) connected with the piston (1) and a piston pin (2) connected with the piston (1) and the connecting rod (3). The piston (1) is provided with a piston body (11) and a piston pin base (12) connected with the end face of the piston body (11), the piston pin base (12) is provided with a first piston pin hole (122), the small head of the connecting rod (3) is provided with a second piston pin hole and an avoiding groove, the avoiding groove can accommodate the piston pin base (12), and the piston pin (2) can penetrate the first piston pin hole (122) and the second piston pin hole to be connected with the piston (1) and the connecting rod (3). The piston connecting rod group effectively solves the problems that piston connecting rod groups are complex in structure and are not compact. The invention further discloses the engine comprising the piston connecting rod group.
Description
Technical field
The present invention relates to technical field of engines, particularly relate to a kind of piston connecting rod unit of motor.In addition, the invention still further relates to a kind of motor comprising above-mentioned piston connecting rod unit.
Background technique
Piston connecting rod unit is the part assembly within the engine thermal energy being become mechanical energy.Piston connecting rod unit is made up of piston, piston ring, wrist pin, connecting rod, connecting rod bearing shell etc., and the function of piston bears gas pressure, and passes to connecting rod by wrist pin and order about crankshaft rotating.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of typical piston connecting rod unit in prior art.
At present, the piston 111 in piston connecting rod unit has piston cavity 113, and connecting rod 114 is arranged in piston cavity 113 by wrist pin 112 and piston pin hole, connecting rod 114 and piston 111 is linked together.The piston 111 of piston connecting rod unit of the prior art has piston cavity 113, complicated structure, simply compact not, can not bear higher pressure of explosion, affects the useful horsepower of motor.
In sum, how effectively solve piston connecting rod unit complicated structure, the problem such as not compact is current those skilled in the art's urgent problem.
Summary of the invention
The object of this invention is to provide a kind of piston connecting rod unit, efficiently solve piston connecting rod unit complicated structure, the problem such as not compact; Another object of the present invention is to provide a kind of motor comprising above-mentioned piston connecting rod unit.
For solving the problems of the technologies described above, the invention provides following technological scheme:
A kind of piston connecting rod unit of motor, comprise piston, the connecting rod be connected with described piston and the wrist pin connecting described piston and connecting rod, the piston pin boss that described piston has piston only and is connected with described piston only end face, described piston pin boss has first piston pin-and-hole, described connecting rod small end have the second piston pin hole and escape groove, described escape groove can accommodating described piston pin boss, and described wrist pin can be connected described piston and connecting rod through described first piston pin-and-hole with the second piston pin hole.
Preferably, described piston pin boss comprises connecting end and piston pin boss body, and described connecting end connects described piston pin boss body and piston only, and described first piston pin-and-hole is opened on described piston pin boss body.
Preferably, the sidewall of described piston pin boss body is also provided with reinforcing bracket, and the quantity of described reinforcing bracket is two, lays respectively at the both sides of described first piston pin-and-hole.
Preferably, described escape groove is groove, and the axes normal of the axis of described escape groove and described second piston pin hole, there is gap between described piston pin boss body and escape groove after described piston pin boss body is positioned over described escape groove.
Preferably, described second piston pin hole is through hole, and described first piston pin-and-hole is identical with the diameter of the second piston pin hole.
Preferably, described wrist pin can run through described first piston pin-and-hole and the second piston pin hole, and described wrist pin all has surplus in the both sides of the second piston pin hole.
Preferably, the surplus place at described wrist pin two ends all has circlip groove, in described circlip groove, back-up ring is housed.
Preferably, described piston only offers annular distance.
The present invention also provides a kind of motor, and the bent axle comprising piston connecting rod unit and be connected with described piston connecting rod unit, described piston connecting rod unit is specially the piston connecting rod unit described in above-mentioned any one.
The piston connecting rod unit of motor provided by the present invention, comprise piston, connecting rod and wrist pin, piston is connected by wrist pin with connecting rod, piston has piston only and piston pin boss, and piston pin boss is connected with piston only end face, piston pin boss has first piston pin-and-hole, connecting rod small end position has escape groove, escape groove can accommodating piston pin boss, and connecting rod small end position also has the second piston pin hole, and wrist pin can be connected piston and connecting rod through first piston pin-and-hole with the second piston pin hole.
Piston connecting rod unit provided by the present invention, piston is directly connected with connecting rod by piston pin boss, and piston does not have piston cavity, relatively simple for structure, solid, the structure of piston connecting rod unit is compacter, and piston is connected with connecting rod closely, firmly, can bear higher pressure of explosion, working life improves.
The present invention also provides a kind of motor, and this motor comprises any one piston connecting rod unit above-mentioned.Because above-mentioned piston connecting rod unit has above-mentioned technique effect, the motor with this piston connecting rod unit also should have corresponding technique effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of typical piston connecting rod unit in prior art;
The structural representation of the piston connecting rod unit that Fig. 2 provides for embodiment a kind of in the present invention;
Fig. 3 is the structural representation of piston in Fig. 2;
Fig. 4 is another view of piston in Fig. 3;
Fig. 5 is the sectional view of piston in Fig. 4.
In accompanying drawing, mark is as follows:
111-piston, 112-wrist pin, 113-piston cavity, 114-connecting rod;
1-piston, 2-wrist pin, 3-connecting rod, 11-piston only, 12-piston pin boss, 121-connecting end, 122-first piston pin-and-hole, 123-piston pin boss body, 124-reinforcing bracket.
Embodiment
The problems such as core of the present invention is to provide a kind of piston connecting rod unit, efficiently solves piston connecting rod unit complicated structure, not compact; Another core of the present invention is to provide a kind of motor comprising above-mentioned piston connecting rod unit.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 2 to Fig. 5, the structural representation of the piston connecting rod unit that Fig. 2 provides for embodiment a kind of in the present invention; Fig. 3 is the structural representation of piston 1 in Fig. 2; Fig. 4 is another view of piston 1 in Fig. 3; Fig. 5 is the sectional view of piston 1 in Fig. 4.
In a kind of embodiment, piston connecting rod unit provided by the present invention, comprise piston 1, connecting rod 3 and wrist pin 2, piston 1 is connected by wrist pin 2 with connecting rod 3, piston 1 bears gas pressure, and pass to connecting rod 3 by wrist pin 2 and order about crankshaft rotating, piston 1 produces impact in movement process, bear very large pressure, piston 1 in cylinder with very high speed to-and-fro motion, and speed constantly changes, produce very large inertial force, piston 1 is made to be subject to very large additional load, under severe operating conditions, the distortion produced, wear and tear more serious, this just requires that piston connecting rod unit connects closely, firmly, annexation is simple, solid, higher pressure of explosion can be born.Piston 1 has piston only 11 and piston pin boss 12, piston pin boss 12 is connected with piston only 11 end face, the dead in line of general piston only 11 and piston pin boss 12, piston only 11 mainly comprises piston head and piston head, piston only 11 has piston ring groove, and the number of channels of piston ring groove may be three roads, also may be four roads, piston ring groove is provided with piston ring, plays sealing and anti-leakage effect.Piston pin boss 12 has first piston pin-and-hole 122, wrist pin 2 is positioned on piston pin boss 12, and piston pin boss 12 is also referred to as piston skirt.Connecting rod 3 has dividing of CONCENTRIC REDUCER, microcephaly is connected with piston 1, major part is connected with bent axle, connecting rod 3 microcephaly position has escape groove, escape groove can accommodating piston pin boss 12, that is, when piston 1 is connected with connecting rod 3, piston 1 is positioned in the escape groove of connecting rod 3, prevents connecting rod 3 and piston pin boss 12 from interfering.Connecting rod 3 microcephaly position also has the second piston pin hole, when piston 1 is connected with connecting rod 3, piston 1 and connecting rod 3 can couple together through first piston pin-and-hole 122 and the second piston pin hole with the dead in line of the second piston pin hole of connecting rod 3, wrist pin 2 by the first piston pin-and-hole 122 of piston 1.
In piston connecting rod unit, piston 1 is directly connected with connecting rod 3 by piston pin boss 12, and the structure of piston 1, the structure of connecting rod 3 microcephaly and piston connecting rod unit are all in protection scope of the present invention.Piston 1 does not have piston cavity, and be the piston pin boss 12 of entity, durable, relatively simple for structure, the structure of piston connecting rod unit is compacter, and piston 1 is connected with connecting rod 3 closely, firmly, make piston connecting rod unit bear higher pressure of explosion, improves working life; Piston 1 does not have piston cavity, the weight saving of piston 1, and then the weight alleviating piston connecting rod unit.Piston pin boss 12 is exposed to outside, and thermal diffusivity is better, can cooling heat dissipation better, and working life improves.
Above-mentioned piston connecting rod unit is only a kind of preferred version, specifically be not limited thereto, pointed adjustment can be made according to actual needs on this basis, thus obtaining different mode of executions, piston pin boss 12 comprises connecting end 121 and piston pin boss body 123, and connecting end 121 connects piston pin boss body 123 and piston only 11, connecting end 121 is positioned at the neutral position of piston 1, be the position of the main strength of piston 1, connecting end 121 is entity structures, more solid.First piston pin-and-hole 122 is opened on piston pin boss body 123, and on the sidewall be specifically opened in, the size of first piston pin-and-hole 122 is determined according to concrete service condition.It should be noted that, the piston pin boss body 123 be connected with connecting end 121 is referred to as upper wall, the side relative with upper wall is referred to as lower wall, the wall be connected with lower wall with upper wall is referred to as sidewall, upper wall mentioned here, lower wall and sidewall are a kind of title, do not refer to be arranged in the upper and lower of real space position and side.
On the basis of above-mentioned embodiment, those skilled in the art according to the difference of concrete occasion, can carry out some changes to piston connecting rod unit.The sidewall of piston pin boss body 123 is also provided with reinforcing bracket 124; reinforcing bracket 124 can support piston key seat body 123; namely support piston skirt section; piston skirt play the guiding role to the to-and-fro motion of piston 1 in cylinder; and bear side pressure; the side pressure that reinforcing bracket 124 can make piston 1 bear is not drawn in toward piston 1 inside, protection piston skirt.The quantity of reinforcing bracket 124 can be two, lays respectively at the both sides of first piston pin-and-hole 122, specifically, is positioned at the both sides of first piston pin-and-hole 122 axis.Certainly, also can not be two, such as arrange four, four reinforcing brackets 124 can evenly be arranged, and also can unevenly arrange, now support effect is better.
Piston connecting rod unit provided by the present invention, in the immovable situation of other parts, can be set to groove by escape groove, and now, piston 1 and connecting rod 3 can freely rotate, mutual noninterference.The axis of escape groove can be vertical with the axis of the second piston pin hole, also can out of plumb, considers stress balance and symmetry properties, be preferably set to vertical.Piston pin boss body 123 is positioned between escape groove back piston key seat body 123 and escape groove gap, that is, have gap between the contoured surface of escape groove and the outer surface of piston pin boss body 123, piston 1 and connecting rod 3 can be freely movable, do not rub between the two, collide.The length of escape groove is identical with the length of piston pin boss body 123, it should be noted that, length mentioned here refers to the length on escape groove axial direction, the exterior edge face of escape groove is concordant with the exterior edge face of piston pin boss body 123, certainly, and also can not be identical, such as, the length of escape groove is greater than the length of piston pin boss body 123, and piston pin boss body 123 is positioned at escape groove inside, and piston pin boss body 123 is not easily damaged.
Obviously, under the guidance of this thought, those skilled in the art can carry out some changes according to the difference of concrete occasion to the first piston pin-and-hole 122 in above-mentioned embodiment, second piston pin hole one is decided to be through hole, first piston pin-and-hole 122 can be set to through hole, now piston 1 and connecting rod 3 couple together through first piston pin-and-hole 122 and the second piston pin hole by wrist pin 2, and Placement is easy, simple to operate; Certainly, first piston pin-and-hole 122 also can not be through hole, it can be end perforate, intermediate portion is not open-minded, two half bore of dead in line, wrist pin 2 now is also two and half pins, and the second piston pin hole of escape groove both sides is connected with two half bore respectively by two and half pins, half pin saves material, and one is damaged rear worse one and half and sells.First piston pin-and-hole 122 can be identical with the diameter of the second piston pin hole, also can not be identical, and first piston pin-and-hole 122 and the second piston pin hole and wrist pin 2 can be transition fit, also can be Spielpassung, specifically can determine according to concrete service condition.
Wrist pin 2 can not move through after first piston pin-and-hole 122 and the second piston pin hole, in order to fixed piston pin 2, guarantee the not at will movement of its position, can be slightly long by the length of the ratio connecting rod 3 of the Design of length of wrist pin 2, the length of connecting rod 3 mentioned here refers to the length of the second piston pin hole axial direction, namely wrist pin 2 all has surplus through after first piston pin-and-hole 122 and the second piston pin hole in the both sides of the second piston pin hole, ensures that wrist pin 2 does not come off out from the second piston pin hole.
It needs to be noted, piston connecting rod unit provided by the present invention should not be restricted to this kind of situation, because wrist pin 2 all has surplus in the both sides of the second piston pin hole, circlip groove can be offered at the residue position had more, back-up ring is installed in circlip groove, the position of fixed piston pin 2, prevents wrist pin 2 from moving left and right.
In order to optimize technique scheme further, can on the basis of above-mentioned embodiment, annular distance can be offered on piston only 11, specifically can be opened in the bottom of piston only 11, axis around piston only 11 offers a ring hole, alleviate the quality of piston 1, lightweight piston 1 reciprocal inertia force is little.The material of piston 1 can be aluminum alloy material; such as; can adopt high tensile aluminium alloy, certainly, can also be other material; such as; can be high grade cast iron or refractory steel, because spendable material is more, just illustrate no longer one by one here; the no matter piston 1 of which kind of material, all in protection scope of the present invention.
Based on the piston connecting rod unit provided in above-described embodiment, present invention also offers a kind of motor, this motor comprises any one piston connecting rod unit in above-described embodiment.The piston connecting rod unit in above-described embodiment is have employed, so the beneficial effect of this motor please refer to above-described embodiment due to this motor.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. the piston connecting rod unit of a motor, it is characterized in that, comprise piston (1), the connecting rod (3) be connected with described piston (1) and the wrist pin (2) connecting described piston (1) and connecting rod (3), the piston pin boss (12) that described piston (1) has piston only (11) and is connected with described piston only (11) end face, described piston pin boss (12) has first piston pin-and-hole (122), described connecting rod (3) microcephaly have the second piston pin hole and escape groove, described escape groove can accommodating described piston pin boss (12), described wrist pin (2) can be connected described piston (1) and connecting rod (3) through described first piston pin-and-hole (122) with the second piston pin hole.
2. piston connecting rod unit according to claim 1, it is characterized in that, described piston pin boss (12) comprises connecting end (121) and piston pin boss body (123), described connecting end (121) connects described piston pin boss body (123) and piston only (11), and described first piston pin-and-hole (122) is opened on described piston pin boss body (123).
3. piston connecting rod unit according to claim 2, it is characterized in that, the sidewall of described piston pin boss body (123) is also provided with reinforcing bracket (124), the quantity of described reinforcing bracket (124) is two, lays respectively at the both sides of described first piston pin-and-hole (122).
4. piston connecting rod unit according to claim 2, it is characterized in that, described escape groove is groove, and the axes normal of the axis of described escape groove and described second piston pin hole, there is gap between described piston pin boss body (123) and escape groove after described piston pin boss body (123) is positioned over described escape groove.
5. the piston connecting rod unit according to any one of claim 1-4, is characterized in that, described second piston pin hole is through hole, and described first piston pin-and-hole (122) is identical with the diameter of the second piston pin hole.
6. piston connecting rod unit according to claim 5, it is characterized in that, described wrist pin (2) can run through described first piston pin-and-hole (122) and the second piston pin hole, and described wrist pin (2) all has surplus in the both sides of the second piston pin hole.
7. piston connecting rod unit according to claim 6, is characterized in that, the surplus place at described wrist pin (2) two ends all has circlip groove, in described circlip groove, back-up ring is housed.
8. piston connecting rod unit according to claim 1, is characterized in that, (11) offer annular distance to described piston only.
9. a motor, the bent axle comprising piston connecting rod unit and be connected with described piston connecting rod unit, is characterized in that, described piston connecting rod unit is specially the piston connecting rod unit described in any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410667592.2A CN104389679A (en) | 2014-11-20 | 2014-11-20 | Engine and piston connecting rod group thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410667592.2A CN104389679A (en) | 2014-11-20 | 2014-11-20 | Engine and piston connecting rod group thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104389679A true CN104389679A (en) | 2015-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410667592.2A Pending CN104389679A (en) | 2014-11-20 | 2014-11-20 | Engine and piston connecting rod group thereof |
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| CN (1) | CN104389679A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087085A (en) * | 2021-11-16 | 2022-02-25 | 湖南江滨机器（集团）有限责任公司 | Engine and piston assembly thereof |
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| US4548125A (en) * | 1982-07-01 | 1985-10-22 | Mtu Motorn-Und Turbinen Union Gmbh | Piston arrangement, particularly for an internal combustion engine |
| DE3643198A1 (en) * | 1986-12-18 | 1988-06-30 | Mahle Gmbh | Trunk piston for internal combustion engines |
| WO1992001177A1 (en) * | 1990-07-07 | 1992-01-23 | Mahle Gmbh | Articulated joint between the piston and connecting rod of an internal combustion engine |
| JP2000065205A (en) * | 1998-08-19 | 2000-03-03 | Toyota Motor Corp | Piston connecting structure |
| CN101165327A (en) * | 2006-10-18 | 2008-04-23 | 方建升 | Articulated connecting rod piston pair |
| CN101809298A (en) * | 2007-08-08 | 2010-08-18 | 费德罗-莫格尔公司 | Small end con rod guidance piston |
| WO2013070142A1 (en) * | 2011-11-11 | 2013-05-16 | Peter Nyberg | Piston and connecting rod assembly |
| CN204267154U (en) * | 2014-11-20 | 2015-04-15 | 湖南江滨机器（集团）有限责任公司 | Motor and piston connecting rod unit thereof |
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2014
- 2014-11-20 CN CN201410667592.2A patent/CN104389679A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4548125A (en) * | 1982-07-01 | 1985-10-22 | Mtu Motorn-Und Turbinen Union Gmbh | Piston arrangement, particularly for an internal combustion engine |
| DE3643198A1 (en) * | 1986-12-18 | 1988-06-30 | Mahle Gmbh | Trunk piston for internal combustion engines |
| WO1992001177A1 (en) * | 1990-07-07 | 1992-01-23 | Mahle Gmbh | Articulated joint between the piston and connecting rod of an internal combustion engine |
| JP2000065205A (en) * | 1998-08-19 | 2000-03-03 | Toyota Motor Corp | Piston connecting structure |
| CN101165327A (en) * | 2006-10-18 | 2008-04-23 | 方建升 | Articulated connecting rod piston pair |
| CN101809298A (en) * | 2007-08-08 | 2010-08-18 | 费德罗-莫格尔公司 | Small end con rod guidance piston |
| WO2013070142A1 (en) * | 2011-11-11 | 2013-05-16 | Peter Nyberg | Piston and connecting rod assembly |
| CN204267154U (en) * | 2014-11-20 | 2015-04-15 | 湖南江滨机器（集团）有限责任公司 | Motor and piston connecting rod unit thereof |
Non-Patent Citations (2)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087085A (en) * | 2021-11-16 | 2022-02-25 | 湖南江滨机器（集团）有限责任公司 | Engine and piston assembly thereof |
| CN114087085B (en) * | 2021-11-16 | 2024-02-20 | 湖南江滨机器（集团）有限责任公司 | Engine and piston assembly thereof |
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