GB2268563A - Slider crank mechanism - Google Patents

Slider crank mechanism Download PDF

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Publication number
GB2268563A
GB2268563A GB9214522A GB9214522A GB2268563A GB 2268563 A GB2268563 A GB 2268563A GB 9214522 A GB9214522 A GB 9214522A GB 9214522 A GB9214522 A GB 9214522A GB 2268563 A GB2268563 A GB 2268563A
Authority
GB
United Kingdom
Prior art keywords
piston
cylinder
blocks
power transmission
transmission mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB9214522A
Other versions
GB9214522D0 (en
GB2268563B (en
Inventor
Chung Hsin Chen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB9214522A priority Critical patent/GB2268563B/en
Publication of GB9214522D0 publication Critical patent/GB9214522D0/en
Priority to FR9211688A priority patent/FR2696520B3/en
Priority to AU26215/92A priority patent/AU2621592A/en
Publication of GB2268563A publication Critical patent/GB2268563A/en
Application granted granted Critical
Publication of GB2268563B publication Critical patent/GB2268563B/en
Priority to HK140696A priority patent/HK140696A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
    • F16H21/18—Crank gearings; Eccentric gearings
    • F16H21/36—Crank gearings; Eccentric gearings without swinging connecting-rod, e.g. with epicyclic parallel motion, slot-and-crank motion

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

A crank mechanism for interconverting reciprocating motion of a double-head piston (12) and rotational motion of a crankshaft (20) includes a block (14) extending inward from an inner surface of each of two piston heads (16), defining a space between the two blocks (14). The crankshaft (20) penetrates transversely through the cylinder (10) between the piston heads (16), with a crank portion (22) thereof fittingly located in the space between the two blocks (14). <IMAGE>

Description

TITLE; POWER TRANSMISSION MECHANISM The present invention relates to a power transmission mechanism to interconvert the reciprocating motion of a piston and the rotational motion of a crankshaft.
A conventional power transmission mechanism, e.g., an internal combustion engine generally has a cylinder with a piston connected to a crank via a connecting rod. However, the connecting rod wobbles in a plane, yet the piston is linearly guided by the cylinder wall, which renders a nonuniform frictional force between the piston rings and the cylinder wall, thereby reducing the lives of the elements.
Furthermore, the piston has to connect the crank via a connecting rod, which is a bulky mechanism having a lowpower transmission efficiency.
The present invention provides an improved power transmission mechanism which is compact and more efficient in power transmission.
According to the present invention, a power transmission mechanism includes a cylinder which receives a double-head piston therein. The double-head piston has a block extending inward from an inner surface of each of the two piston heads thereof, defining a space between the two blocks. A crankshaft penetrates transversely through the cylinder between the piston heads, with a crank portion thereof fittingly located in the space between the two blocks. By such an arrangement, the reciprocating motion of the piston and the rotary motion of the crankshaft are interconvertable.
Other advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
In the drawings: Fig. 1 is an exploded view of a power transmission mechanism in accordance with the present invention; Fig. 2 is a schematic perspective view of the power transmission mechanism with a portion thereof cutaway to show the structure thereof; and Fig. 3a through 3d are schematic views taken along line 3-3 in Fig. 2, which respectively show intake, compression, power, and exhaust strokes of the power transmission mechanism which functions as an internal combustion engine in this case.
Referring to the drawings and initially to Figs. 1 and 2, a power transmission mechanism for interconverting reciprocating motion and rotational motion in accordance with the present invention generally includes a cylinder 10 which receives a double-head piston 12 therein. The doublehead piston 12 has a block 14 extending inward from an inner surface of each of two piston heads 16 thereof, defining a space between the two blocks 14. In this embodiment, the piston heads 16 are connected by four posts 13 to form an integral unit. A crankshaft 20 penetrates transversely through the cylinder 10 between the piston heads 16 with a crank portion 22 having a diameter substantially equal to the distance between the two blocks 14, thereby being fittingly located in the space between the two blocks 14.
The transverse length of each block 14 is equal to the diameter of the cylinder 10 to assure that the crank portion 22 always contacts the two blocks 14, i.e., during operation, the crank portion is guided in the space between the two blocks 14.
For illustration, the following example shown in Figs.
3a through 3d is an application of the power transmission mechanism acting as an internal combustion engine. The cylinder 10 has two bores 24 and 26 for respectively installing an intake valve 25 and an exhaust valve 27 in which the controlling of ignition thereof is conventional and as such further description is not required. Optionally, the cylinder 10 may have intake and exhaust valves provided on both end walls thereof to form a double-action piston.
In operation, the piston 12 in Figs. 3a through 3d is respectively shown in its intake stroke, compression stroke, power stroke, and exhaust stroke. As clearly shown in these figures, upon combustion of a gas mixture in the cylinder, the piston's linear and reciprocal motion in the cylinder 10 is converted into rotary motion of the crank of the crankshaft.
At least one piston ring 18 (in this embodiment only one piston ring is shown) is provided to each piston head for sealing and lubrication.
It is appreciated that the invention has alternative uses as a power transmission mechanism such as a compressor in which rotary motion of the crankshaft is converted into reciprocating motion of the piston to pressurize the working fluid.
Although the invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed.

Claims (2)

CLAIMS:
1. A power transmission mechanism for interconverting reciprocating motion and rotational motion comprising a cylinder which receives a piston with two piston heads therein, a block extending inward from an inner surface of each of said piston heads, defining a space between said blocks, each said block having a length equal to the diameter of said cylinder, a crankshaft penetrating transversely through said cylinder between said piston heads, with a crank portion thereof fittingly located in said space between said blocks.
2. A power transmission mechanism substantially as hereinbefore deescribed with reference to and as shown in the accompanying drawings.
GB9214522A 1992-07-08 1992-07-08 Power transmission mechanism Expired - Fee Related GB2268563B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB9214522A GB2268563B (en) 1992-07-08 1992-07-08 Power transmission mechanism
FR9211688A FR2696520B3 (en) 1992-07-08 1992-10-02 Power transmission mechanism.
AU26215/92A AU2621592A (en) 1992-07-08 1992-10-05 Power transmission mechanism
HK140696A HK140696A (en) 1992-07-08 1996-08-01 Power transmission mechanism

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9214522A GB2268563B (en) 1992-07-08 1992-07-08 Power transmission mechanism
FR9211688A FR2696520B3 (en) 1992-07-08 1992-10-02 Power transmission mechanism.
AU26215/92A AU2621592A (en) 1992-07-08 1992-10-05 Power transmission mechanism

Publications (3)

Publication Number Publication Date
GB9214522D0 GB9214522D0 (en) 1992-08-19
GB2268563A true GB2268563A (en) 1994-01-12
GB2268563B GB2268563B (en) 1995-05-10

Family

ID=27152988

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9214522A Expired - Fee Related GB2268563B (en) 1992-07-08 1992-07-08 Power transmission mechanism

Country Status (3)

Country Link
AU (1) AU2621592A (en)
FR (1) FR2696520B3 (en)
GB (1) GB2268563B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007069915A1 (en) * 2005-12-14 2007-06-21 Shed Engineering Limited Reciprocating piston machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB446199A (en) * 1934-01-25 1936-04-27 R L Th Pernin & Fils Sa Measuring apparatus for liquids adaptable also for use as a fluid actuated motor
EP0079750A1 (en) * 1981-11-12 1983-05-25 WALLER, Francis E. Parallel cylinder internal combustion engine
US4559838A (en) * 1983-10-06 1985-12-24 Neuenschwander Victor L Scotch yoke piston and crankshaft connection with floating crank pin
GB2167805A (en) * 1983-09-09 1986-06-04 William Bernard Heniges Scotch yoke I C engine with variable stroke and compression ratio
EP0203395A1 (en) * 1985-05-15 1986-12-03 BRACKETT, Douglas C. Device for converting linear motion to rotary motion or vice versa
EP0187930B1 (en) * 1984-12-28 1989-07-19 Ficht GmbH Multiple cylinder internal-combustion engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB446199A (en) * 1934-01-25 1936-04-27 R L Th Pernin & Fils Sa Measuring apparatus for liquids adaptable also for use as a fluid actuated motor
EP0079750A1 (en) * 1981-11-12 1983-05-25 WALLER, Francis E. Parallel cylinder internal combustion engine
GB2167805A (en) * 1983-09-09 1986-06-04 William Bernard Heniges Scotch yoke I C engine with variable stroke and compression ratio
US4559838A (en) * 1983-10-06 1985-12-24 Neuenschwander Victor L Scotch yoke piston and crankshaft connection with floating crank pin
EP0187930B1 (en) * 1984-12-28 1989-07-19 Ficht GmbH Multiple cylinder internal-combustion engine
EP0203395A1 (en) * 1985-05-15 1986-12-03 BRACKETT, Douglas C. Device for converting linear motion to rotary motion or vice versa

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007069915A1 (en) * 2005-12-14 2007-06-21 Shed Engineering Limited Reciprocating piston machine

Also Published As

Publication number Publication date
FR2696520B3 (en) 1994-12-16
AU2621592A (en) 1994-04-21
FR2696520A1 (en) 1994-04-08
GB9214522D0 (en) 1992-08-19
GB2268563B (en) 1995-05-10

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20060708