Transmission mechanism

Abstract

Transmission mechanism with a structure (1) configured to rotatably house a first crankshaft (3) rotating on a first shaft (31), and a second crankshaft (4) rotating on a second shaft (41), with a first crank (33) and a second crank (43), a first connecting rod (34) connected to the first crankshaft (3) at a first joint (33a) located at a first radial distance (33b) from the first shaft (31), and a second connecting rod (44) connected to the second crankshaft (4) at a second joint (43a) located at a second radial distance (43b) from the second shaft (41), and a lever (5) rotatably connected to the structure (1) on a fulcrum (51), in order to achieve a particular efficiency in the transmission of the movement and of the energy generated by devices such as an electric generator or a combustion engine.

Description

[0001] TRANSMISSION MECHANISM

[0002] The present invention relates to a transmission mechanism with a structure configured to rotatably house a first crankshaft with a first crank rotating about a first axis, and a second crankshaft with a second crank rotating about a second axis, a first connecting rod attached to the first crankshaft at a first radial distance from the first axis, and a second connecting rod attached to the second crankshaft at a second radial distance from the second axis, both first and second connecting rods are rotatably attached to a lever, which is in turn rotatably attached to the structure at a support or fulcrum, incorporating notable innovations and advantages.

[0003] Background of the invention

[0004] The development of various types of machinery and transmission mechanisms seeks to achieve more efficient operation and reduce energy consumption. The current situation of energy shortages and environmental destruction is well known. Thus, efficient energy use, environmental conservation, and research and development of new energy sources and new structures are objectives in the industrialized world.

[0005] Today's mechanical equipment sometimes uses gear or belt drives to transmit power, establishing a transmission ratio. Current designs primarily seek to reduce power transmission loss and, ultimately, energy savings. This goal can also be achieved through improved lubrication systems to reduce component friction and reduce power transmission loss.

[0006] In this regard, a low-power starter is known, as described in patent CN215370090, that uses the double-lever principle for conversion. It comprises a base, a drive shaft, a starter shaft, and a double-lever mechanism. The drive shaft uses the double-lever principle to indirectly increase power to drive the starter shaft, and is rotatably connected to the base, requiring a drive motor to rotate. Fixed on said drive shaft are a plurality of driving deflector rods arranged at equal intervals along the direction of the drive shaft. The starter shaft is indirectly driven by the drive shaft to rotate through the double-lever mechanism, thereby reducing the force required by the drive shaft to rotate the starter shaft.

[0007] Furthermore, as described in patent W02004055353, a self-contained mechanical multiplier is known. It can be connected to a differential system to drive cars, trucks, and industrial machinery or to generate pressure. It can also be used as a reduction link between a power source and an alternator. Furthermore, it can be used to rotate the crankshaft of a combustion engine under the effect of the fuel explosion in the combustion chamber, moving one side of the lever, and, with the repulsive force, drag the crankshaft to the other side of the lever.

[0008] Even so, it is still desirable to develop a transmission mechanism that enables particularly efficient transmission of motion and energy generated by devices such as an electric generator or a combustion engine.

[0009] Description of the invention

[0010] The objective of the present invention is to provide a lever-operated transmission mechanism, comprising a plurality of cranks and connecting rods connecting a first rotating shaft to a second rotating shaft, such that, by actuating the first rotating shaft, either manually or with a motor, electrical energy can be generated by the second rotating shaft, which is connected, for example, to an electric generator. The special configuration of the transmission mechanism results in particularly efficient transmission of motion.

[0011] In accordance with this objective, the present invention provides a transmission mechanism comprising a structure configured to rotatably house a first crankshaft rotating about a first axis, and a second crankshaft rotating about a second axis, the first crankshaft comprising a first crank and the second crankshaft comprising a second crank, and comprising a first connecting rod connected to the first crankshaft at a first joint located on the first crank at a first radial distance from the first axis, and a second connecting rod connected to the second crankshaft at a second joint located on the second crank at a second radial distance from the second axis, the first connecting rod and the second connecting rod being rotatably connected to a lever, which lever is in turn rotatably connected to the structure via a bearing fulcrum.Consequently, the first joint and the second joint rotate in phase, i.e. at the same angle, and the first crankshaft and second crankshaft rotate with equal angular velocities, and in the same direction, with high efficiency in the transmission of mechanical energy, and minimal loss of performance.

[0012] Similarly, in the transmission mechanism of the present invention; the first connecting rod comprises a first section of the first connecting rod and a second section of the first connecting rod, rotatably connected at a third joint, such that both sections of the first connecting rod can transmit the incoming rotary movement, that is, the movement of the first crankshaft to the lever, and the second connecting rod comprises a first section of the second connecting rod and a second section of the second connecting rod, rotatably connected at a fourth joint, such that both sections of the second connecting rod can receive the movement of the lever and transmit the movement to the rotating shaft of the second crankshaft towards an output element of the transmitted energy.

[0013] In the mechanism of the present invention, the intersection of the horizontal passing through the first axis and the second axis with the vertical passing through the support fulcrum define an origin, and; the positions of the first joint and the second joint are configured to be aligned with the origin along a first straight line during operation of the transmission mechanism, such that the first joint and the second joint rotate in phase, and the positions of the third joint and the fourth joint are configured to be aligned along a second straight line during operation of the transmission mechanism, such that the transmitted movement is in phase, synchronized and with the same angular velocity.

[0014] The claimed transmission mechanism has been found to be highly efficient, allowing the power of an incoming rotating shaft to be increased and / or multiplied to an output rotating shaft, all while maintaining a very short distance between said shafts and a consistent angular rotational speed between both shafts. In fact, the claimed mechanism ensures synchronized shaft motion, so that power transmission is smooth and without jerks or jumps.

[0015] Preferably, said lever comprises a lever arm and said second connecting rod is rotatably connected to the lever arm such that both sections of the second connecting rod are arranged between the fulcrum and the first connecting rod rotatably connected to the same lever arm.

[0016] Thanks to this, the mechanism includes or defines a second-class lever, where the load is closer to the fulcrum than the point where the force is applied, resulting in a more efficient distribution of the applied forces, so that less effort is required to obtain a greater amount of mechanical energy. Furthermore, greater control over the load is generated, which facilitates more precise and controlled movements.

[0017] Again preferably, the positions of the first joint and the second joint are configured to be aligned with the origin along a first straight line such that said first straight line remains parallel to the lever or lever arm during operation of the mechanism.

[0018] Thanks to this, the set of connecting rods, the lever and the cranks move synchronously as a block, thus increasing the efficiency in the transmission of movement, thus increasing the efficiency in increasing the power from the first input shaft to the second output shaft.

[0019] Advantageously, the mechanism comprises at least a first guide arranged in the structure to guide the alternative movement of the third joint, and at least a second guide arranged in the structure to guide the alternative movement of the fourth joint.

[0020] Preferably, each of the ends of said first and second support axes (E1, E2) is associated with a movable slide and a respective guide, so that the stabilization of the third and fourth joints increases.

[0021] In this way, when the first axis transmits the movement to the rest of the transition mechanism, the vertical displacement of the third and fourth joint is along said guides, ensuring the verticality of the movement of said third and fourth joint, preventing the two sets of connecting rods from becoming destabilized and the system from becoming blocked.

[0022] Advantageously, said third joint further comprises a distal end of the first section of the first connecting rod mounted rotatably on said first support axis (E1), and a proximal end of the second section of the first connecting rod mounted rotatably on the same first support axis (E1).

[0023] Again advantageously, said fourth joint further comprises a distal end of the first section of the second connecting rod mounted rotatably on said second support axis (E2), and a proximal end of the second section of the second connecting rod mounted rotatably on the same second support axis (E2).

[0024] The articulation between the two sections of the first connecting rod and the articulation between the two sections of the second connecting rod allows the angular velocities of the axes to be equalized so that the transmission of movement occurs constantly without sudden changes, generating a more productive transmission.

[0025] According to another aspect of the invention, the structure comprises a first casing that houses the first connecting rod in a pass-through manner, where the first connecting rod comprises a first guide configured to slide longitudinally inside the first casing, such that only vertical movement of the third joint is allowed, blocking horizontal and lateral movement, which results in proper synchronization of the first crankshaft with the second crankshaft.

[0026] In addition, the first housing is located at the height of the third joint, where the first housing has a vertical dimension of at least the displacement of the third joint, such that the first housing covers the third joint at all times in its displacement.

[0027] Additionally, the structure comprises a second casing that houses the second connecting rod in a pass-through manner, where the second connecting rod comprises a second guide configured to slide longitudinally inside the second casing, such that only vertical movement of the fourth joint is allowed, blocking horizontal and lateral movement, which results in proper synchronization of the first crankshaft with the second crankshaft.

[0028] On the other hand, the second housing is located at the height of the fourth joint, where the second housing has a vertical dimension of at least the displacement of the fourth joint, so that the second housing covers the fourth joint at all times in its displacement.

[0029] In a preferred embodiment of the invention, the first crankshaft and / or the second crankshaft comprise at least one counterweight, in order to compensate for imbalances and prevent vibrations.

[0030] Optionally, the first crankshaft comprises at least a first coupling, so that it has the possibility of being mechanically connected to an actuator, such as an electric or combustion engine.

[0031] Additionally, the second crankshaft comprises at least a second coupling, so that it can be mechanically connected to a moving element, or energy producer, such as an electric generator.

[0032] According to a preferred embodiment of the invention, the transmission mechanism comprises at least two sets of first connecting rod, first crank, second connecting rod, second crank and lever in parallel, so that the transmission is smoother, without jerks or jumps.

[0033] Preferably, according to one embodiment, the transmission mechanism comprises at least two first crankshafts rotating about the first axis, at least two first connecting rods respectively connected to each of said first crankshafts, at least two second crankshafts rotating about the second axis, at least two second connecting rods respectively connected to each of said second crankshafts, and at least two levers mounted in parallel on the same fulcrum, each of them rotatably fixed to their respective first and second connecting rods.

[0034] This allows the load applied to the transmission mechanism to be shared more evenly between the two assemblies, so that the entire applied force is distributed between the two assemblies, reducing the risk of overload or premature failure. The load is distributed more evenly, reducing wear on moving parts and prolonging component life.

[0035] Preferably, according to this embodiment including two assemblies, the at least two first crankshafts each comprise a first crank, and said first cranks are mounted on the first axis maintaining an angle α of phase with respect to one another. In addition, the at least two second crankshafts each comprise a second crank, and said second cranks are mounted on the second axis maintaining an angle α of phase with respect to one another. Preferably, said angle α of phase in rotation is greater than 0 oand less than 180°.

[0036] In this way, the first crank of a first set is out of phase in rotation with respect to the first crank of a second set, so that at the time of starting no set gets stuck as its position coincides with the upper or lower vertical point, that is, at 0 o and 180°.

[0037] By having two sets in parallel and offset from each other, one set pulls the other, preventing their connecting rods from blocking the cranks. This reduces the risk of blockages or failures in the mechanism, making it smoother and more efficient.

[0038] According to another embodiment of the invention, the transmission mechanism comprises at least three assemblies of a first connecting rod, a first crank, a second connecting rod, a second crank and a lever, in parallel, where the first crank of a first parallel assembly is offset with respect to the first crank of a second parallel assembly, attached to the first assembly, by a number of degrees resulting from dividing 360 degrees by the total number of parallel assemblies, such that for three assemblies the offset would be 120 degrees, for four it would be 90 degrees, and so on. In this way, the possibility of retention points in the rotation, and of jumps and discontinuities in the rotary and linear movement is eliminated. It should also be noted that the measurements must be the same for all parts for each assembly, and only the point of connection with the respective crankshaft changes.

[0039] By allowing three or more sets to be mounted in parallel, the total system capacity is increased, allowing it to meet higher power demands without the need for larger equipment.

[0040] The accompanying drawings show, by way of non-limiting example, a transmission mechanism constructed in accordance with the invention. Other features and advantages of said transmission mechanism, object of the present invention, will become apparent from the description of a preferred, but not exclusive, embodiment, illustrated by way of non-limiting example in the accompanying drawings.

[0041] Brief description of the figures

[0042] For a better understanding of what has been explained, some drawings are attached which, schematically and solely as a non-limiting example, represent a practical case of implementation.

[0043] Figure 1 is a side view of the transmission mechanism in a first position, in accordance with the present invention;

[0044] Figure 2 is a perspective view of the transmission mechanism in a first position, in accordance with the present invention;

[0045] Figure 3 is a side view of the transmission mechanism in a second position, in accordance with the present invention;

[0046] Figure 4 is a schematic diagram view of the transmission mechanism, according to the present invention;

[0047] Figure 5 is a perspective view of a second embodiment of transition mechanism, in accordance with the present invention;

[0048] Figure 6 is a front view of the embodiment of Figure 5, of an assembly without the structure, according to the present invention;

[0049] Figure 7 is a perspective view of the embodiment of Figure 5, of two assemblies without part of the structure, in accordance with the present invention;

[0050] Figure 8 is a perspective view of the embodiment of Figure 5, without the structure, according to the present invention;

[0051] Figure 9 is a front view of the embodiment of Figure 5, of two assemblies without the structure, according to the present invention;

[0052] Figure 10 is a front view of the embodiment of Figure 5, without a part of the structure, the two assemblies are in a certain position of the rotation cycle, according to the present invention;

[0053] Figure 11 is a front view of the embodiment of Figure 5, without a part of the structure, the two assemblies are in a second determined position of the rotation cycle, according to the present invention;

[0054] Description of a preferred embodiment

[0055] Next, a first embodiment of the transition mechanism of the present invention is described with reference to Figures 1 to 4, and a second embodiment with reference to Figures 5 to 11.

[0056] In figure 1 you can see a side view of the transmission mechanism in a first position, with the structure (1) as a general support for the first crankshaft (3) and its first axis (31), and for the second crankshaft (4) with its second axis (41). The position of the first casing (11) can be seen, above one side of the structure (1), and of the second casing (12), which houses the second guide (44d) and the second connecting rod (44). From said side view, the presence of the first crank (33) can be observed, actuated by the first crankshaft (3), having a counterweight (6), and a second coupling (42), available for the transmission of the movement to an output element, such as an electric generator. It is worth mentioning the presence of a lever (5), capable of rotating with respect to the fulcrum (51), mechanically joining the second connecting rod (44) with the first connecting rod (34).

[0057] In figure 2, a perspective view of the transmission mechanism can be seen in a first position, where the first casing (11) can be seen first, the first crankshaft (3) with a first coupling (32) and a counterweight (6), and connected to a first crank (33), to a first connecting rod (34), and specifically to a first section of the first connecting rod (34a), connected in turn to a second section of the first connecting rod (34b) by means of a third union (34c), housed in a first guide (34d). In a second term, the second casing (12) can be seen above the second crankshaft (4), which has a second coupling (42), being connected by a second crank (43) to a second connecting rod (44), and specifically to a first section of the second connecting rod (44a) connected to a second section of the second connecting rod (44b) by means of a fourth union (44c) housed in a second guide (44d).

[0058] In figure 3 a side view of the transmission mechanism can be seen in a second position, likewise with the structure (1) giving general support, on the one hand, to a first casing (11) on a first crankshaft (3) with a first axis (31), which in turn has a first crank (33) and a counterweight (6). On the other hand, the structure (1) supports a second casing (12) on a second crankshaft (4) with a second axis (41), having a second coupling (42), connected to a second crank (43), and to a second connecting rod (44), which has a first section of second connecting rod (44a) and a second section of second connecting rod (44b), also appreciating the position of the second guide (44d) that houses a fourth union (44c). Above it has a lever (5), connected with rotation capacity in a fulcrum (51).It can be observed that the transmission mechanism in this case has two sets (2) in parallel, the first connecting rod (34) and the second connecting rod (44) with the other associated elements.

[0059] In figures 4 and 6 you can see a view of a schematic diagram of the transmission mechanism, in which the position of a first axis (31) is shown, connected to a first crank (33), with a first connection (33a) at a first distance (33b) with a first connecting rod (34). Above, the position of a third connection (34c) can be seen. On the other hand, the position of a second axis (41) is shown, connected to a second crank (43), with a second connection (43a) at a second distance (43b) with a second connecting rod (44). A fourth connection (44c) can also be seen at a higher point. Above, the lever (5) can be seen with the capacity to rotate in a fulcrum (51). It should be noted that the structure (1) rests on a horizontal (71), whose perpendicular is a vertical (72), which must pass through the fulcrum (51). Their intersection defines a point of origin (73), which marks the origin of both a first line (81) and a second line (82).The first straight line (81) passes through the first union (33a) and the second union (43a), while the second straight line (82) passes through the third union (34c) and the fourth union (44c).

[0060] Figures 5 to 9 show an embodiment similar to those of Figures 1 to 4, where a second embodiment of the transition mechanism according to the claims can be seen.

[0061] Figure 5 shows a perspective view of a second embodiment of a transmission mechanism with a structure (1) formed by three elements, two outer covers and a central separator. The structure (1) provides rigidity and support to the transmission mechanism, in addition to separating the two assemblies (2), positioned in parallel.

[0062] Figure 6 shows a first crankshaft (3) fixed to the first shaft (31), said first crankshaft (3) is provided with a first crank (33), which is connected to the first section of the first connecting rod (34a) through the first joint (33a), at the same time, the first section of the first connecting rod (34a), this is connected to a second section of the first connecting rod (34b) through the third joint (34c) and the second section of the first connecting rod (34b) is rotatably connected to a lever (5) that transmits the movement to a second section of the second connecting rod (44b), which is connected to a first section of the second connecting rod (44a) through a fourth joint (44c), and where the first section of the second connecting rod (44) is connected to a second crank (43) through a second joint (43a) transmitting the movement to a second shaft (41) which has a second coupling coupled. (42) to receive the rotational movement of the first shaft with increased power.

[0063] Figure 7 shows a perspective view of the second embodiment, a first assembly (2), a cover and the central separator of the structure (1) are shown, said separator separates a first assembly (2) from a second assembly (2). In addition, it is shown that the third and fourth unions (34c, 44c) are joined to a first guide (34d) and to a second guide (44d) respectively, to guide the vertical movement of the third and fourth unions (34c, 44c), so that it prevents said third and fourth unions (34c, 44c) from moving horizontally or laterally in an unwanted manner, so that they prevent the transmission mechanism from being blocked.

[0064] According to this embodiment, said first guide (34d) and second guide (44d) each comprise a first and second support axis (E1, E2) associated with a movable slide (C) along its respective guide (34d, 44d).

[0065] Figure 8 shows a perspective view of the second embodiment, showing two assemblies (2) mounted in parallel. The two assemblies (2) are positioned in offset positions, allowing for smoother operation without sudden movements. The structure has been omitted in this figure to facilitate viewing of the two assemblies (2).

[0066] An elevation of the second embodiment is shown in Figure 9. Each assembly (2) comprises a first crankshaft (3) mounted on the first shaft (31). In addition, each assembly (2) comprises a second crankshaft (4) mounted on the second shaft (41). The first cranks (33) of the crankshafts (3) are mounted offset from each other by an angle α. In addition, the two second cranks (43) of the second crankshafts (4) are also mounted offset from each other by an angle α. Although in this embodiment the first cranks (33) and the second cranks (34) are both offset by an angle α of 90°, it would also be possible for the value of α to be different for the group of first cranks (33) with respect to the group of second cranks (43). That is, the first cranks (33) could be offset by an angle of 90° while the second two cranks (43) could be offset by 60°.

[0067] Furthermore, in this embodiment a is 90°, although it is also possible for a to have a value between 0 and 180°. The offset of the two sets (2) allows one set (2) to pull the other set (2) during operation of the transmission mechanism, preventing the first and second connecting rods (34, 44) from tending to change rotation or become blocked in alignment with the cranks when they are aligned with their respective cranks (33, 43).

[0068] Figures 10 and 11 show two elevation views of the second embodiment, in which the two assemblies (2) are offset by an angle α of 90°, that is, a first assembly (2) is rotated from a second assembly (2) with respect to the rotation fulcrum (51). In Figure 10, the lever (5) of a first assembly (2) is located above the lever (5) of a second assembly (2), however, in Figure 11 it is the other way around, so that the two figures indicate two different positions at 90°, of the rotation cycle of each assembly (2).

[0069] More particularly, as seen in Figures 1 and 2, the transmission mechanism comprises a structure (1), configured to rotatably house a first crankshaft (3) rotating about a first axis (31), and a second crankshaft (4) rotating about a second axis (41), where the first crankshaft (3) comprises a first crank (33) and the second crankshaft (4) comprises a second crank (43), and comprises a first connecting rod (34) connected to the first crankshaft (3) at a first joint (33a) located on the first crank (33) at a first radial distance (33b) from the first axis (31), and a second connecting rod (44) connected to the second crankshaft (4) at a second joint (43a) located on the second crank (43) at a second radial distance (43b) from the second axis (41), where the first connecting rod (34) and the second connecting rod (44) are rotatably connected to a lever (5), which in turn is rotatably connected to the structure (1) at a fulcrum (51).Specify that the first axis (31) is located in the front part of the transmission mechanism, the second axis (41) in the intermediate part, and the fulcrum (51) in the rear part.

[0070] It should be noted that, as observed in Figure 4, the intersection of the horizontal (71) passing through the first axis (31) and the second axis (41), with the vertical (72) passing through the fulcrum (51) defines an origin (73), where the positions of the first union (33a), of the second union (43a) and of the origin (73) are configured to be aligned in a first straight line (81) during the operation of the transmission mechanism.

[0071] More specifically, as can be seen in Figure 2, the first connecting rod (34) comprises a first section of the first connecting rod (34a) and a second section of the first connecting rod (34b), rotatably connected in a third joint (34c).

[0072] On the other hand, as can be seen in Figure 2, the second connecting rod (44) comprises a first section of the second connecting rod (44a) and a second section of the second connecting rod (44b), rotatably joined in a fourth joint (44c). It should be noted that, as can be seen in Figure 4, the positions of the third joint (34c), the fourth joint (44c) and the origin (73) are configured to be aligned in a second straight line (82) during the operation of the transmission mechanism.

[0073] In a preferred embodiment of the invention, as seen in Figures 1 and 2, the structure (1) comprises a first casing (11) that houses the first connecting rod (34) in a pass-through manner, where the first connecting rod (34) comprises a first guide (34d) configured to slide longitudinally inside the first casing (11).

[0074] Preferably, as seen in figures 1 and 2, the first housing (11) is located at the height of the third joint (34c), where the first housing (11) has a vertical dimension of at least the displacement of the third joint (34c).

[0075] Additionally, as can be seen in figures 2 and 3, the structure (1) comprises a second casing (12) that houses the second connecting rod (44) in a pass-through manner, where the second connecting rod (44) comprises a second guide (44d) configured to slide longitudinally through the interior of the second casing (12).

[0076] In more detail, as can be seen in figures 2 and 3, the second housing (12) is located at the height of the fourth joint (44c), where the second housing (12) has a vertical dimension of at least the displacement of the fourth joint (44c).

[0077] Optionally, as seen in figures 1 and 2, the first crankshaft (3) and / or the second crankshaft (4) comprises at least one counterweight (6).

[0078] Additionally, as can be seen in Figure 2, the first crankshaft (3) comprises at least a first coupling (32). Said first coupling (32) may be a grooved disc or any mechanism, such as a pinion or a pulley, preferably configured for the insertion of a first belt coupled, for example, to a motor element. The first shaft (31) could also be used directly as a coupling element to a motor element, that is, from shaft to shaft.

[0079] Additionally, as can be seen in Figures 1 and 3, the second crankshaft (4) comprises at least one second coupling (42), which can also be a grooved disc or any mechanism, such as a pinion or a pulley, preferably configured for the insertion of a second belt coupled to an energy generating element. The second shaft (41) could also be used directly, for example, to couple to a generator, from shaft to shaft. According to a preferred embodiment of the invention, as can be seen in Figures 2 and 3, the transmission mechanism comprises at least two sets (2) of first connecting rod (34), first crank (33), second connecting rod (44), second crank (43) and lever (5) in parallel.

[0080] It is worth mentioning that, as can be seen in Figure 3, the first crank (33) of a first set (2) is offset in its rotation with respect to the first crank (33) of a second set (2). Specifically, it is offset by a value between 0 and 180 degrees, avoiding limit values, and preferably being a value close to or equal to 90 degrees.

[0081] Optionally, as seen in Figure 3, the transmission mechanism comprises at least three sets (2) of first connecting rod (34), first crank (33), second connecting rod (44), second crank (43) and a lever (5) in parallel, where the first crank (33) of a first set (2) in parallel is offset with respect to the first crank (33) of a second set (2) in parallel, attached to the first set (2), by a number of degrees resulting from dividing 360 degrees by the total number of sets (2) in parallel.

[0082] In summary, the transmission mechanism described allows energy and movement to be transferred from a first coupling (32) to a second coupling (42), such that power generated by a source, such as a motor, is transferred to a device that performs work, such as a generator, a compressor, a motor, fan belts, etc. The use of at least two assemblies (2) provided with a first articulated connecting rod (34) and a second connecting rod (44), also articulated, allows power to be transmitted from the first coupling (32) to the second coupling (41) in a highly efficient manner, allowing the power of the input coupling to be multiplied to the output coupling.

[0083] The details, shapes, dimensions and other accessory elements, as well as the components used in the implementation of the transmission mechanism, may be conveniently replaced by others that are technically equivalent, and do not deviate from the essence of the invention or the scope defined by the claims included below the following list.

[0084] List numerical references:

[0085] I structure

[0086] II first casing

[0087] 12 second housing 2 set

[0088] 3 first crankshaft

[0089] 31 first axis

[0090] 32 first coupling

[0091] 33 first crank

[0092] 33rd first union

[0093] 33b first distance

[0094] 34 first connecting rod

[0095] 34a first section of first connecting rod

[0096] 34b second section of first connecting rod

[0097] 34c third union

[0098] 34d first guide

[0099] 4th crankshaft

[0100] 41 second axis

[0101] 42 second coupling

[0102] 43 second crank

[0103] 43rd second union

[0104] 43b second distance

[0105] 44 second connecting rod

[0106] 44a first section of second connecting rod

[0107] 44b second section of second connecting rod

[0108] 44c fourth union

[0109] 44d second guide

[0110] 5 lever

[0111] 51 fulcrum

[0112] 6 counterweight

[0113] 71 horizontal

[0114] 72 vertical

[0115] 73 origin

[0116] 81 first straight

[0117] 82 second straight

[0118] E1 first support axis

[0119] E3 second support axis

[0120] C slide

[0121] Although reference has been made to a specific embodiment of the invention, it is evident to a person skilled in the art that the transmission mechanism described is susceptible to numerous variations and modifications, and that all the details mentioned may be replaced by other technically equivalent ones, without departing from the scope of protection defined by the claims attached in the following section.

Claims

CLAIMS 1. Transmission mechanism comprising a structure (1) configured so as to house a first crankshaft (3) rotatably mounted on a first axis (31), and a second crankshaft (4) rotatably mounted on a second axis (41), wherein the first crankshaft (3) comprises a first crank (33) and the second crankshaft (4) comprises a second crank (43), said mechanism further comprising; - a first connecting rod (34) connected to the first crankshaft (3) at a first joint (33a) located on the first crank (33) at a first radial distance (33b) from the first axis (31), - a second connecting rod (44) connected to the second crankshaft (4) at a second joint (43a) located on the second crank (43) at a second radial distance (43b) from the second axis (41), and - a lever (5) including a fulcrum (51) provided in the structure (1), - wherein the first connecting rod (34) and the second connecting rod (44) are rotatably connected to the lever (5), characterized in that the first connecting rod (34) comprises a first first connecting rod section (34a) and a second first connecting rod section (34b) rotatably connected at a third joint (34c), both first connecting rod sections (34a, 34b) being capable of transmitting movement from the first crankshaft (3) to the lever (5), and the second connecting rod (44) comprises a first second connecting rod section (44a) and a second second connecting rod section (44b) rotatably connected at a fourth joint (44c), both second connecting rod sections (44a, 44b) being capable of receiving movement from the lever (5) and transmitting movement to the second crankshaft (4), and where the intersection of the horizontal (71) passing through the first axis (31) and the second axis (41) with the vertical (72) passing through the fulcrum (51) define an origin (73),and where the positions of the first joint (33a) and the second joint (43a) are configured to be aligned with the origin (73) along a first straight line (81) during operation of the transmission mechanism, and where the positions of the third joint (34c) and the fourth joint (44c) are configured to be aligned with the origin (73) along a second straight line (82) during operation of the transmission mechanism.

2. Transmission mechanism according to claim 1, wherein said lever (5) comprises a lever arm (5a) and said second connecting rod (44) is rotatably connected to the lever arm (5a) such that both sections of the second connecting rod (44a, 44b) are arranged between the fulcrum (51) and the first connecting rod (34) rotatably connected to the same lever arm (5a) (5).

3. Transmission mechanism according to claims 1 or 2, wherein the positions of the first union (33a) and the second union (43a) are configured to be aligned with the origin (73) according to the first straight line (81), said first straight line (81) remaining parallel to the lever (5) or arm (5a) of lever (5) during the operation of the mechanism.

4. Transmission mechanism according to any of the preceding claims, comprising at least one guide (34d) arranged in the structure (1) to guide the alternative movement of the third joint (34c), and at least one guide (44d) arranged in the structure (1) to guide the alternative movement of the fourth joint (44c).

5. Transmission mechanism according to claim 4, wherein said third joint (34c) and said fourth joint (44c) each comprise a first and second support axis (E1, E2) associated with a slide (C) movable along its respective guide (34d, 44d).

6. Transmission mechanism according to claim 5, wherein said third joint (34c) further comprises a distal end of the first section (34a) of the first connecting rod (34) rotatably mounted on said first support axis (E1), and a proximal end of the second section (34b) of the first connecting rod (34) rotatably mounted on the same first support axis (E1).

7. Transmission mechanism according to claim 5, wherein said fourth joint (44c) further comprises a distal end of the first section (44a) of the second connecting rod (44) rotatably mounted on said second support axis (E2), and a proximal end of the second section (44b) of the second connecting rod (44) rotatably mounted on the same second support axis (E2).

8. Transmission mechanism according to claims 5 to 7, wherein each of the ends of said first and second support axes (E1, E2) is associated with a movable slide and a respective guide (34d, 44d).

9. Transmission mechanism according to any of the preceding claims, wherein the first crankshaft (3) and / or the second crankshaft (4) comprises at least one counterweight (6).

10. Transmission mechanism according to any of the preceding claims, wherein the first crankshaft (3) comprises at least a first coupling (32) for connecting the first shaft (31) to an actuating device.

11. Transmission mechanism according to any of the preceding claims, wherein the second crankshaft (4) comprises at least a second coupling (42) for connecting the second shaft (41) to an energy producing device.

12. Transmission mechanism according to any of the preceding claims, comprising at least two first crankshafts (3) rotating about the first axis (31), at least two first connecting rods (34) respectively connected to each of said first crankshafts (3), at least two second crankshafts (4) rotating about the second axis (41), at least two second connecting rods (44) respectively connected to each of said second crankshafts (4), and at least two levers (5) mounted in parallel on the same fulcrum (51), wherein said first connecting rods (34) and said second connecting rods (44) are rotatably connected to their respective levers (5).

13. Transmission mechanism according to claim 12, wherein said at least two first crankshafts (3) each comprise a first crank (33), and wherein said first cranks (3) are mounted on the first axis (31) so that they maintain an angle α of phase difference in the rotation with respect to each other.

14. Transmission mechanism according to claim 12, wherein said at least two second crankshafts (4) each comprise a second crank (43), and wherein said second cranks (43) are mounted on the second axis (41) so that they maintain an alpha angle of phase shift in the rotation with respect to each other.

15. Transmission mechanism according to claims 10 and 11, wherein said phase shift alpha angle in the rotation is less than 180°.

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