CN219492401U - Connecting mechanism - Google Patents
Connecting mechanism Download PDFInfo
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- CN219492401U CN219492401U CN202320109564.3U CN202320109564U CN219492401U CN 219492401 U CN219492401 U CN 219492401U CN 202320109564 U CN202320109564 U CN 202320109564U CN 219492401 U CN219492401 U CN 219492401U
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- guide
- axis
- crankshaft
- connection mechanism
- circumferential
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Abstract
The utility model provides a connecting mechanism capable of reducing contact pressure between elements. The connecting mechanism comprises: a guide member having one end rotatably supported by the first member centering on a first axis, the guide member extending in a direction orthogonal to the first axis; and a slider including a sliding portion supported by an outer peripheral portion of the guide and a coupling portion extending from the sliding portion toward a direction orthogonal to an extending direction of the guide and the first axis, wherein the outer peripheral portion of the guide includes a plurality of circumferential face portions and a plurality of planar face portions, contact surfaces of the sliding portion and the plurality of circumferential face portions receive a compression force and a tension force, respectively, on opposite sides in the extending direction of the coupling portion, and an area of a surface receiving the compression force in the contact surface is larger than an area of a surface receiving the tension force.
Description
Technical Field
The present utility model relates to a connection mechanism.
Background
In order to ensure that more people can use energy which is perpetual and advanced, efforts are being made to develop methods for improving the efficiency of fuel use. In the conventional internal combustion engine structure, power is transmitted through a plurality of connection mechanisms. In order to avoid abrasion of the connecting mechanism due to the swinging of the connecting mechanism by the self inertial force during operation, the inertial force needs to be further reduced, and the shape of the sliding piece needs to be changed. The present utility model aims to solve the above problems and to reduce the contact pressure of the machine, and further, to achieve the efficiency of energy use.
Disclosure of Invention
The utility model provides a connecting mechanism capable of reducing contact pressure between elements.
The connecting mechanism of the utility model comprises: a guide member having one end rotatably supported by the first member centering on a first axis, the guide member extending in a direction orthogonal to the first axis; and a slider including a sliding portion supported by an outer peripheral portion of the guide and sliding along an extending direction of the guide, and a coupling portion extending from the sliding portion toward a direction orthogonal to the extending direction of the guide and the first axis, the coupling portion being rotatably connected to a second member about a second axis parallel to the first axis and offset in the extending direction with respect to a center of the coupling portion, wherein the outer peripheral portion of the guide includes a plurality of circumferential face portions provided on opposite sides on the outer peripheral portion and abutting the sliding portion of the slider and sliding relatively, and a plurality of flat face portions provided between the plurality of circumferential face portions, the sliding portion and a contact face of the plurality of circumferential face portions being respectively subjected to a compression force and a tension force in an area larger than a tension force receiving area of the contact face in the extending direction of the coupling portion.
In an embodiment of the present utility model, the sliding portion has a ring portion that slides relatively in abutment with the plurality of circumferential surface portions, the plurality of circumferential surface portions being formed so as to be concentric and of a radius of curvature, the radius of curvature of the ring portion at a surface subjected to tensile force being larger than the radius of curvature of the ring portion at a surface subjected to compressive force.
In an embodiment of the present utility model, the sliding portion has a ring portion that relatively slides in abutment with the plurality of circumferential surface portions, the ring portion being formed in a perfect circle, and a radius of curvature of a surface of the plurality of circumferential surface portions that receives a compressive force is larger than a radius of curvature of a surface of the plurality of circumferential surface portions that receives a tensile force.
In an embodiment of the present utility model, the coupling portion has a pair of support walls protrusively provided at an outer periphery of the sliding portion, and a latch extending along the second axis and coupled with the pair of support walls.
In an embodiment of the utility model, the connection mechanism is provided in an internal combustion engine including: an engine body formed with a cylinder extending in a longitudinal direction and a crank chamber provided below and to a side of the cylinder; a piston slidably disposed within the cylinder; a crankshaft rotatably supported by the engine body; a coupling element connected to the connection mechanism and rotatably supported by the crankshaft; a connecting rod connected to the piston and one end of the coupling element; a sub-crankshaft provided above the crankshaft and rotatably supported by the engine body; and a sub-connecting rod connected to the sub-crankshaft and the connecting mechanism, wherein the guide is rotatably supported by the engine body as the first member, and the guide is connected to the sub-crankshaft through the sub-connecting rod, and the connecting portion of the slider is rotatably connected to the other end of the coupling element as the second member.
In an embodiment of the utility model, the guide is arranged above the rotational axis of the crankshaft.
In an embodiment of the utility model, the guide extends above the coupling element in a direction orthogonal to the longitudinal direction and the rotation axis.
In view of the above, in the connecting mechanism of the present utility model, the contact surface of the slider and the guide is not symmetrical, and particularly the area of the surface receiving the compressive force is larger than the area of the surface receiving the tensile force. Thus, the guide member can alleviate the pressure by different contact areas when the tension or the pressure is applied by the slider, and suppress deformation amounts of the guide member and the slider in different directions. Accordingly, the connecting mechanism of the present utility model can reduce the contact pressure between the elements.
In order to make the above features and advantages of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1A is a schematic diagram of a connection mechanism according to an embodiment of the present utility model.
FIG. 1B is a cross-sectional view of the connection mechanism of FIG. 1A taken along line A-A.
Fig. 2 is a schematic view of the connection mechanism of fig. 1A applied to an internal combustion engine.
Fig. 3A is a schematic view of a connection mechanism according to another embodiment of the present utility model. Fig. 3B is a cross-sectional view of the connection mechanism of fig. 3A taken along line B-B.
Description of the reference numerals
1: an internal combustion engine;
10: an engine body (first member);
12: a cylinder;
14: a crank chamber;
20: a piston;
30: a connecting rod;
40: a coupling element (second component);
50: a crankshaft;
60: an auxiliary connecting rod;
70: a secondary crankshaft;
100. 100': a connecting mechanism;
110. 110': a guide;
112. 112': an outer peripheral portion;
112a, 112a': a circumferential face portion;
112b: a planar portion;
120. 120': a slider;
122. 122': a sliding part;
122a, 122a': a ring portion;
124: a connecting part;
a1: a first axis;
a2: a second axis;
r, R1, R2, R ', R1', R2': radius (radius of curvature);
RA: an axis of rotation;
s1, S2, S1', S2': a noodle;
x: a left-right direction;
y: a front-rear direction;
z: up-down direction (longitudinal direction).
Detailed Description
FIG. 1A is a schematic diagram of a connection mechanism according to an embodiment of the present utility model. FIG. 1B is a cross-sectional view of the connection mechanism of FIG. 1A taken along line A-A. Fig. 2 is a schematic view of the connection mechanism of fig. 1A applied to an internal combustion engine. In the present embodiment, the connection mechanism 100 is used as a power transmission member of the internal combustion engine 1, but the present utility model is not limited thereto, and may be applied to any other device that requires connection or power transmission. The horizontal direction X, the front-rear direction Y, the up-down direction Z, and the like in the drawings are not intended to limit the positional relationship of the respective members in the present utility model. Unless otherwise specified, the right, front and upper directions used in the following description are the directions indicated by the left-right direction X, front-rear direction Y and up-down direction Z arrows, and the left, rear and lower directions used in the description are the opposite directions. The specific structure of the connection mechanism 100 of the present embodiment and its application will be described below with reference to fig. 1A to 2.
Referring to fig. 1A, in the present embodiment, the connection mechanism 100 includes a guide 110 and a slider 120. One end of the guide 110 is rotatably supported by a first member (engine body 10 described later) centering on a first axis A1, and the guide 110 extends in a direction orthogonal to the first axis A1, that is, in a left-right direction X of fig. 1. The slider 120 is sleeved on the outer periphery of the guide 110, and the slider 120 includes a sliding portion 122 and a connecting portion 124. The sliding portion 122 is provided around the outer peripheral portion 112 of the guide 110 and supported by the outer peripheral portion 112, and the sliding portion 122 slides along the extending direction of the guide 110. The coupling portion 124 extends from the sliding portion 122 toward a direction orthogonal to the extending direction of the guide and the first axis A1, that is, in a direction away from the guide 110 in the up-down direction Z of fig. 1, but the present utility model is not limited thereto. The coupling portion 124 is rotatably connected to a second member (coupling element 40 described below) around a second axis A2. The second axis A2 is offset in the extending direction with respect to the center of the connecting portion 124, that is, the second axis A2 is not located at the center of the connecting portion 124. The second axis A2 is parallel to the first axis A1.
Referring to fig. 1B, in the present embodiment, the outer peripheral portion 112 of the guide 110 includes a plurality of circumferential surface portions 112a and a plurality of planar portions 112B. The number of the circumferential surface portions 112a is exemplified as two, and is provided on opposite sides of the outer peripheral portion 112, for example, opposite sides in the up-down direction Z of the outer peripheral portion 112, but the utility model is not limited thereto. The plurality of circumferential surface portions 112a are in contact with the sliding portions 122 of the slider 120 and slide relatively. In addition, the number of the plurality of flat portions 112b is exemplified as two, and are provided between the plurality of circumferential surface portions 112a, that is, on opposite sides in the front-rear direction Y of the outer peripheral portion 112, but the present utility model is not limited thereto. In other words, the portion of the guide 110 abutting the slider 120 is the circumferential surface portion 112a, and the portion of the guide 110 distant from the slider 120 is the flat surface portion 112b. The coupling portion 124 of the slider 120 has a pair of support walls 124a and a pin 124b. A pair of support walls 124a are provided protruding from the outer periphery of the sliding portion 122, and a pin 124b extends along the second axis A2 and is coupled to the pair of support walls 124 a.
Further, in the present embodiment, the contact surfaces of the sliding portion 122 and the plurality of circumferential surface portions 112a receive a compressive force and a tensile force, respectively, on opposite sides in the extending direction of the connecting portion 124. Taking fig. 2 as an example, the force applied from the slider 120 toward the guide 110 (upward in the up-down direction Z) is a pressure, that is, the contact surface receiving the pressure is a surface S1, of the plurality of circumferential surface portions 112a, which is close to the connecting portion 124; the force applied from the slider 120 in the direction away from the upper and lower guides 110 (downward in the up-down direction Z) is a tensile force, that is, the contact surface receiving the tensile force is a surface S2 away from the connecting portion 124 among the plurality of circumferential surface portions 112 a. The area of the surface S1 receiving the compressive force is larger than the area of the surface S2 receiving the tensile force.
As can be seen from this, in the connection mechanism 100 of the present embodiment, the contact surface of the slider 120 and the guide 110 is not symmetrical, and particularly the area of the surface S1 receiving the compressive force is larger than the area of the surface S2 receiving the tensile force. Thus, the guide 110 can alleviate the pressing force by different contact areas when the sliding member 120 applies the pulling force or the pressing force, and suppress deformation amounts of the guide 110 and the sliding member 120 in different directions. Accordingly, the connection mechanism 100 of the present embodiment can reduce the contact pressure between the elements.
Further, in the present embodiment, the sliding portion 122 has a ring portion 122a that is in contact with the plurality of circumferential surface portions 112a to slide relatively. The plurality of circumferential surface portions 112a are formed to be concentric and with the radius of curvature R. The radius of curvature R2 of the ring portion 122a at the surface S2 subjected to the tensile force is larger than the radius of curvature R1 of the ring portion 122a at the surface S1 subjected to the compressive force. That is, the ring portion 122a of the sliding portion 122 is not formed in a vertically symmetrical shape. By the different radius designs, the deformation of the slider 120 in the lateral direction can be suppressed in addition to the reduction of the contact pressure. In particular, in the case of a tensile force, the large radius of curvature R2 in the ring portion 122a can alleviate the deformation of the ring portion that contracts inward in the left-right direction X when the ring portion is stretched in the up-down direction Z.
The following is a further explanation of a specific structure in which the connection mechanism 100 is applied to the internal combustion engine 1.
Referring to fig. 2, in the present embodiment, a connection mechanism 100 is provided in an internal combustion engine 1, and the internal combustion engine 1 includes an engine body 10, a piston 20, a connecting rod 30, a coupling element 40, a crankshaft 50, a sub-connecting rod 60, and a sub-crankshaft 70. The engine body 10 includes a cylinder 12 extending in the vertical direction Z (longitudinal direction), and a crank chamber 14 provided below and beside the cylinder 12. The piston 20 is slidably disposed within the cylinder 12. The connecting rod 30 is connected to one end (for example, right end) of the piston 20 and the coupling element 40. The coupling element 40 is connected to the connection mechanism 100 and is rotatably supported by the crankshaft 50. The crankshaft 50 is provided in the crank chamber 14 and rotatably supported by the engine body 10. The sub-connecting rod 60 is connected to the sub-crankshaft 70 and the connecting mechanism 100. The sub-crankshaft 70 is provided above the crankshaft 50 and is rotatably supported by the engine body 10.
Further, in the present embodiment, the guide 110 is rotatably supported by the engine body 10 as the first member. The guide 110 is rotatably fixed to the engine body 10 around a first axis A1, wherein the first axis A1 is disposed at one end (for example, the right end) of the guide 110, but the embodiment is not limited thereto. The sub-connecting rod 60 is connected to the other end (e.g., left end) of the guide 110, and the guide 110 is connected to the sub-crankshaft 70 through the sub-connecting rod 60 to conduct power of the crankshaft 50. The coupling portion 124 of the slider 120 is rotatably connected to the other end (for example, left end) of the coupling element 40 as the second member. Further, the guide 110 is disposed above the rotation axis RA of the crankshaft 50. The guide 110 extends above the coupling element 40 in a direction (substantially, the left-right direction X) orthogonal to the up-down direction Z (longitudinal direction) and the rotation axis RA.
Fig. 3A is a schematic view of a connection mechanism according to another embodiment of the present utility model. Fig. 3B is a cross-sectional view of the connection mechanism of fig. 3A taken along line B-B. The connection mechanism 100' of the present embodiment is described below.
Referring to fig. 3A and 3B, in the present embodiment, the connection mechanism 100' is different from the connection mechanism 100 in that the cross sections of the guide 110' and the slider 120' are different from the cross sections of the guide 110 and the slider 120. Specifically, the sliding portion 122' has a ring portion 122a ' that is in contact with and slides relative to the plurality of circumferential surface portions 112a '. The ring portion 122a 'is formed as a perfect circle of radius R'. The radius of curvature R1 'of the surface S1' subjected to the compressive force in the plurality of circumferential surface portions 112a 'is larger than the radius of curvature R2' of the surface S2 'subjected to the tensile force in the plurality of circumferential surface portions 112 a'. That is, the outer peripheral portion 112 'of the guide 110' is not formed in a vertically symmetrical shape. In this way, the connecting mechanism 100 'of the present embodiment also has the technical effect of reducing the contact pressure and further suppressing the deformation of the sliding member 120' in the lateral direction.
In summary, in the connecting mechanism of the present utility model, the contact surface of the slider and the guide is not symmetrical, and particularly, the area of the surface receiving the compressive force is larger than the area of the surface receiving the tensile force. Thus, the guide member can alleviate the pressure by different contact areas when the tension or the pressure is applied by the slider, and suppress deformation amounts of the guide member and the slider in different directions. Preferably, the slider or guide is set to an asymmetric shape. In this way, by designing the different radii, the deformation of the slider in the lateral direction can be suppressed in addition to the reduction of the contact pressure. Accordingly, the connecting mechanism of the present utility model can reduce the contact pressure between the elements.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (7)
1. A connection mechanism, comprising:
a guide member having one end rotatably supported by the first member centering on a first axis, the guide member extending in a direction orthogonal to the first axis; and
a slider including a sliding portion supported by an outer peripheral portion of the guide and sliding along an extending direction of the guide, and a connecting portion extending from the sliding portion in a direction orthogonal to the extending direction of the guide and the first axis, and
the connecting portion is rotatably connected to a second member about a second axis parallel to the first axis and offset in the extending direction with respect to the center of the connecting portion, wherein
The outer peripheral portion of the guide includes a plurality of circumferential face portions and a plurality of planar face portions,
the plurality of circumferential surface portions are provided on opposite sides of the outer circumferential portion, and the plurality of circumferential surface portions are abutted against the sliding portion of the slider to slide relatively,
the plurality of planar portions are disposed between the plurality of circumferential portions,
the contact surfaces of the sliding part and the plurality of circumferential surface parts bear pressure and tensile force respectively at two opposite sides of the extending direction of the connecting part, and the area of the surface bearing the pressure in the contact surfaces is larger than the area of the surface bearing the tensile force.
2. The connection mechanism according to claim 1, wherein,
the sliding part is provided with a ring part which is abutted with the plurality of circumferential surface parts and slides relatively,
the plurality of circumferential face portions are formed concentric and with a radius of curvature,
the radius of curvature of the ring portion at the surface subjected to the tensile force is larger than the radius of curvature of the ring portion at the surface subjected to the compressive force.
3. The connection mechanism according to claim 1, wherein,
the sliding part is provided with a ring part which is abutted with the plurality of circumferential surface parts and slides relatively,
the ring portion is formed in a perfect circle,
the radius of curvature of the surface of the plurality of circumferential surfaces that receives the compressive force is greater than the radius of curvature of the surface of the plurality of circumferential surfaces that receives the tensile force.
4. A connection according to any one of claims 1 to 3, wherein,
the connecting part is provided with a pair of supporting walls and a bolt,
the pair of support walls are protrusively provided on the outer periphery of the sliding portion,
the latch extends along the second axis and is coupled to the pair of support walls.
5. The connection mechanism according to claim 1, wherein,
the connecting mechanism is arranged in an internal combustion engine, and the internal combustion engine comprises:
an engine body formed with a cylinder extending in a longitudinal direction and a crank chamber provided below and to a side of the cylinder;
a piston slidably disposed within the cylinder;
a crankshaft rotatably supported by the engine body;
a coupling element connected to the connection mechanism and rotatably supported by the crankshaft;
a connecting rod connected to the piston and one end of the coupling element;
a sub-crankshaft provided above the crankshaft and rotatably supported by the engine body; and
a secondary connecting rod connected to the secondary crankshaft and the connecting mechanism, wherein
The guide is rotatably supported by the engine body as the first member, and the guide is connected with the sub crankshaft through the sub connecting rod,
the connecting portion of the slider is rotatably connected to the other end of the coupling element as the second member.
6. The connection mechanism according to claim 5, wherein,
the guide is disposed above the rotational axis of the crankshaft.
7. The connection mechanism according to claim 6, wherein,
the guide extends above the coupling element in a direction orthogonal to the longitudinal direction and the rotation axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320109564.3U CN219492401U (en) | 2023-01-17 | 2023-01-17 | Connecting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320109564.3U CN219492401U (en) | 2023-01-17 | 2023-01-17 | Connecting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219492401U true CN219492401U (en) | 2023-08-08 |
Family
ID=87516160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320109564.3U Active CN219492401U (en) | 2023-01-17 | 2023-01-17 | Connecting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219492401U (en) |
-
2023
- 2023-01-17 CN CN202320109564.3U patent/CN219492401U/en active Active
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