JP2017025805A - Power converter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power converter capable of intermittently driving an auxiliary drive source with a simple structure, and thereby capable of efficiently converting rotational force.SOLUTION: A power converter includes: a main shaft with a center axis set horizontally; a stationary gear installed coaxially with the main shaft; a drive source having one end fixed to the main shaft, and rotating so as to rotate the main shaft; and an auxiliary drive source configured to forcibly rotate the drive source only in a rotation period in which the drive source is positioned in a non-drive area. The drive source includes: a revolving gear engaged to the stationary gear, and revolving around the stationary gear; a drive gear engaged to the revolving gear; a drive body having one end fixed with the rotational shaft of the drive gear as a rotation fulcrum; and an arm connecting between the main shaft, the rotational shaft of the revolving gear and the rotational shaft of the drive gear.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a power conversion device that converts output of a drive source into rotational energy.

  2. Description of the Related Art Conventionally, a power conversion device that converts output of a drive source into rotational energy, for example, a power conversion device that converts linear motion of a piston in a vehicle engine into rotational motion is well known.

  In addition, in such a power conversion device, for example, a pair of counterweights that descend due to gravity are used as a drive source, and a drive motor is used as an auxiliary drive source for maintaining the continuous vertical movement of the pair of counterweights. A technique is known (see, for example, Patent Document 1).

Special table 2014-504347 gazette

  However, the power conversion device disclosed in Patent Document 1 mainly uses a vertically descending motion of one counterweight due to gravity as a main drive source. For this reason, in order to raise the other counterweight, it is necessary to use a high output drive motor as an auxiliary drive source.

  In addition, the drive motor maintains the continuous vertical movement of the pair of counterweights, and the other is equal to or faster than the descending speed when one counterweight is descending from the top dead center to the bottom dead center. It is necessary to raise the counterweight from the bottom dead center to the top dead center.

  Therefore, the pair of counterweights requires a coupling mechanism such as a clutch for lowering and raising independently with respect to the drive motor, resulting in a complicated configuration. Moreover, when the other counterweight is raised faster than the lowering speed of one counterweight, the drive power for driving the drive motor is higher than the output (for example, power generation) obtained by the lowering of the one counterweight. It can grow. Further, when the lowering speed of one counterweight is the same as the rising speed of the other counterweight, the drive motor is forced to always drive.

  In order to solve the above-described problems, the present invention provides a power conversion device capable of intermittently driving an auxiliary drive source while having a simple configuration, thereby efficiently generating rotational energy. Is to provide.

  In order to solve the above problems, a power conversion device according to the present invention has a main shaft that is horizontally installed, a fixed gear that is installed coaxially with the main shaft, and one end fixed to the main shaft so that the main shaft rotates. A driving source that moves, and an auxiliary driving source that forcibly rotates the driving source only during a rotation period in which the driving source is located in the non-driving area. The driving source meshes with the fixed gear and is fixed gear. A rotating gear that circulates around, a drive gear that meshes with the rotating gear, a drive body that is fixed at one end with the rotation shaft of the drive gear as a rotation fulcrum, a main shaft, a rotation shaft of the rotation gear, and a rotation shaft of the drive gear. And a connected arm.

  The driving body includes a rotating arm having one end fixed to the rotating shaft of the driving gear, and a weight fixed to the other end of the rotating arm.

  A plurality of drive bodies are installed on the main shaft so that the phases of the rotation trajectories are different at equal angles.

  The auxiliary drive source is lower than the inertia end point after the driver rotates downward from top dead center to bottom dead center due to its own weight and then upwards due to inertia from bottom dead center to top dead center. A non-driving area is set from a predetermined point on the dead center side to the top dead center, and the driving body is forcibly rotated upward from the predetermined point.

  The auxiliary drive source is a drive motor that is driven by receiving power supply only during a period in which the drive body is located in the non-drive area.

  The auxiliary drive source forcibly rotates the drive body upward via the main shaft.

  The circling gear has the same structure as the gear teeth of the fixed gear and the drive gear, and has a smaller diameter than the diameter of at least one of the fixed gear and the drive gear.

  The fixed gear and the drive gear have the same diameter.

  According to the present invention, it is possible to intermittently drive the auxiliary drive source while having a simple configuration, and thus it is possible to efficiently convert the rotational force.

It is the front view which showed the power converter device which concerns on one Embodiment of this invention, and was seen from the arrow A direction of FIG. It is a side view showing a power converter concerning one embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The power converter device which concerns on one Embodiment of this invention is shown, (a)-(d) is explanatory drawing which shows the rotation position suitably in 1 period of a drive gear and a weight in time series. It is explanatory drawing which shows the power converter device which concerns on one Embodiment of this invention, and shows the surrounding locus | trajectory of a drive gear and a weight. It is explanatory drawing of the waist | hip | lumbar part at the time of using the leaf | plate spring for the auxiliary drive source which shows the power converter device which concerns on one Embodiment of this invention.

  Next, a power conversion device according to an embodiment of the present invention will be described with reference to the drawings. The embodiments shown below are preferred specific examples of the power conversion device of the present invention, and may have various technically preferred limitations. However, the technical scope of the present invention particularly covers the present invention. As long as there is no description which limits, it is not limited to these aspects. 1 and 2, some members are not shown for convenience of explanation. Therefore, there are members not shown in the figure.

  1 and 2, the power conversion device 1 includes a housing 2 in which a plurality of play portions are assembled, a main shaft 3 in which a central axis P1 is horizontally installed at the upper center of the housing 2, and a coaxial with the main shaft 3. The fixed gear 4, the drive source 10 that rotates so as to rotate the main shaft 3 with one end fixed to the main shaft 3, and the drive source 10 only during the rotation period in which the drive source 10 is located in the non-drive area. And an auxiliary drive source 20 that forcibly rotates.

  The housing 2 includes a base 2 a and a pair of support columns 2 b that stand up from the base 2 a and support both ends of the main shaft 3. In addition, the frame 2 may fix a rectangular frame to the base 2a for the purpose of reinforcement, for example.

  The main shaft 3 is rotatably supported by both ends of the column 2b in a penetrating state. Specifically, the main shaft 3 rotates around the central axis P1 via a bearing unit 5 whose both ends are bolted to the outer wall surface of the support column 2b. Here, both ends of the main shaft 3 penetrate the fixed gear 4 and the bearing unit 5. In FIG. Illustration of bolts and the like for fixing the bearing unit 5 to the outer wall surface of the column 2b is omitted.

  The fixed gear 4 is fixed to the bearing unit 5 via a countersunk screw 6. The bearing unit 5 may be fixed to the column 2b integrally with the fixed gear 4 by a flat head screw 6.

  The drive source 10 is fixed at one end with a rotating gear 11 meshing with the fixed gear 4 and rotating around the fixed gear 4, a driving gear 12 meshing with the rotating gear 11, and a rotating shaft 12 a of the driving gear 12. The driving body 13 includes an arm 14 that connects the main shaft 3, the rotating shaft 11 a of the rotating gear 11, and the rotating shaft 12 a of the driving gear 12.

  The driving body 13 includes a rotating arm 15 having one end fixed to the rotating shaft 12 a of the driving gear 12 and a weight 16 fixed to the other end of the rotating arm 15. In the present embodiment, the driving bodies 13 are respectively installed at both ends of the main shaft 3. At this time, the respective driving bodies 13 are equally installed so that the phase of the rotation locus is different by 180 °.

  The rotating gear 11 is rotatably supported by a rotating shaft 11 a via a bracket 17 in the middle of the arm 14. The circumferential gear 11 has the same structure as the gear teeth of the fixed gear 4 and the drive gear 12 and has a smaller diameter (for example, 1/2) than the diameter of at least one of the fixed gear 4 and the drive gear 12. At this time, the fixed gear 4 and the drive gear 12 have the same diameter. Thereby, the revolving gear 11 can synchronize the rotational position of the main shaft 3 and the rotational position of the drive gear 12. The diameter of the rotating gear 11 can be arbitrarily set according to the number of drive sources 10 installed on the main shaft 3.

  The drive gear 12 is supported at the free end of the arm 14 via a bracket 18 so that the rotary shaft 12a can rotate.

  The arm 14 is a straight metal plate so as to linearly connect the main shaft 3, the rotating shaft 11 a of the rotating gear 11, and the rotating shaft 12 a of the drive gear 12. The base end of the arm 14 is fixed to the end 3 a of the main shaft 3 via the bracket 7. As a result, the rotation of the main shaft 3 with the center axis P1 as the rotation center and the rotation of the arm 14 with the center axis P as the fulcrum are synchronized.

  The rotating arm 15 uses a straight metal flat plate, and its base end is fixed to the rotating shaft 12 a via the bracket 19. Thereby, the rotation arm 15 rotates about the rotating shaft 12a, and rotates the drive gear 12 via the rotating shaft 12a.

  The weight 16 is made of a metal disk or the like, and its center is fixed to the tip of the rotating arm 15. The rotating arm 15 and the weight 16 may be integrated. By making the weight 16 circular, the load and the like at the rotation position of the rotation arm 15 can be made uniform. Therefore, it is preferable to use a weight 16 having a uniform thickness.

  Here, based on FIG.3 and FIG.4, the mechanism which produces the operation | movement and driving force of the drive body 13 is described.

  The drive gear 12 rotates around the rotation shaft 12a. And the base end of the rotation arm 15 is fixed to the rotating shaft 12a which fixes the drive gear 12. FIG. Thereby, the drive body 13 which consists of the rotation arm 15 and the weight 16 rotates using the rotating shaft 12a as the rotation fulcrum of the rotation arm 15.

  The fixed gear 4 and the drive gear 12 have the same tooth structure and are not affected by the pitch of the rotating gear 11. Further, by interposing the rotating gear 11, the rotation direction of the drive gear 12 and the rotation direction of the main shaft 3 can be made the same direction, and the driving force of the driving body 13 can be efficiently transmitted to the main shaft 3. .

  As shown in FIG. 4, the arm 14 rotates on a locus L1 with the central axis P1 of the main shaft 3 as a fulcrum, and the rotating arm 15 rotates on a rotation locus L2 with the center P2 of the rotating shaft 12a as a fulcrum. . Therefore, the arm 14 and the turning arm 15 are configured such that the arm 14 having the center axis P1 that is a fixed fulcrum and the turning arm 15 having the center P2 that is a moving fulcrum that moves as the arm 14 rotates are mutually connected. It rotates independently.

  Specifically, as shown in FIG. 3 (A), the weight 16 starts to rotate by its own weight with its center downward from the top dead center T in the clockwise direction in the figure (hereinafter also referred to as “down”). And start accelerating. Hereinafter, as shown in FIG. 3 (B), the arm 14 passes through the horizontal state, and as shown in FIG. 3 (C), when the arm 14 is in the downward vertical state, the bottom dead center B is reached. As shown in FIG. 3D, rotation starts upward (hereinafter also referred to as “rise”) due to inertia.

  In the present embodiment, when the weight 16 is rotated upward from the bottom dead center B in the clockwise direction in the figure again (hereinafter, also referred to as “upward rotation”), the initial weight is rotated upward as it is due to inertia. However, after that, it tries to return backward in the counterclockwise direction shown in the figure due to the weight.

  Therefore, in the present embodiment, the auxiliary drive source 20 is driven while the weight 16 reaches the top dead center T from a predetermined timing before starting the reversal, so that the weight 16 is forcibly raised. 13 is rotated.

  Specifically, as shown in FIG. 4, the driving body 13 rotates downward from the top dead center T to the bottom dead center B due to its own weight (hereinafter also referred to as “downward rotation”), and then the bottom dead center. A non-driving area W is defined as a non-driving area W from a predetermined point S closer to the bottom dead center B than the inertia end point E after the upward rotation due to inertia from B to the top dead center T.

  The auxiliary drive source 20 is forcibly turning the drive body 13 upward in the non-drive area W from the predetermined point S to the top dead center T. In the present embodiment, the auxiliary drive source 20 is fixed to a drive motor 21 that is driven by power supply only during a period in which the drive body 13 is located in the non-drive area W, and an output shaft 21 a of the drive motor 21. An output gear 22 and an input gear 23 fixed near the center of the main shaft 3 so as to mesh with the output gear 22 are provided. As a result, when the drive motor 21 is driven and the output gear 22 is rotating, the main shaft 3 rotates about the central axis P1 via the input gear 23, and the driving body 13 is forced by the rotation of the main shaft 3. Is turned upward.

  The drive motor 21 has an output capable of rotating the drive body 13 in a non-drive area W where the main shaft 3 does not rotate by the driving force of the drive body 13 in consideration of the weight of the drive body 13 including the weight 16. . The drive motor 21 is installed on, for example, an installation shelf 2 c provided on the housing 2.

  On the other hand, a transmission gear 9 is coaxially installed on the main shaft 3, and a generator gear 24 is engaged with the input gear 23. In other words, when the drive source 10 and the auxiliary drive source 20 are driven to rotate about the central axis P1 as a rotation center, the rotational force can be used via a transmission mechanism such as a gear (not shown) that meshes with the transmission gear 9. ing. Further, when the main shaft 3 rotates, the input gear 23 rotates in conjunction with it. Therefore, by using this input gear 23 also as an output gear, a known power generator via a generator gear 24 separately from the transmission gear 9. It is also possible to transmit power to (not shown) to generate electric power.

  The generated power can also be used as drive power for the drive motor 21.

  As described above, the power conversion device 1 according to the present embodiment includes the main shaft 3 with the central axis P1 installed horizontally, the fixed gear 4 installed coaxially with the main shaft 3, and the main shaft 3 with one end fixed to the main shaft 3. Drive source 10 that rotates to rotate 3 and auxiliary drive source 20 that forcibly rotates drive source 10 only during a rotation period in which drive source 10 is located in non-drive area W. The drive source 10 is fixed at one end with a rotating gear 11 that meshes with the fixed gear 4 and rotates around the fixed gear 4, a driving gear 12 that meshes with the rotating gear 11, and a rotating shaft 12a of the driving gear 12. The driving body 13 and the arm 14 that connects the main shaft 3, the rotating shaft 11 a of the rotating gear 11 and the rotating shaft 12 a of the driving gear 12 are provided. Can be intermittent , It is possible to convert the rotational force efficiently.

  The driving body 13 includes a rotating arm 15 having one end fixed to the rotating shaft 12 a of the driving gear 12 and a weight 16 fixed to the other end of the rotating arm 15, thereby rotating independently of the arm 14. In addition, the driving force can be easily set according to the length of the rotating arm 15, the weight of the weight 16, and the like.

  A plurality of the drive bodies 13 are installed on the main shaft 3 such that the phases of the rotation locus L2 are different at equal angles, whereby the main shaft 3 can be efficiently rotated. In the above-described embodiment, the two drive bodies 13 are installed in the housing 2 with a 180 ° phase change. For example, the three drive bodies 13 may be installed with a 120 ° phase change. .

  The auxiliary drive source 20 ends the inertia after the drive body 13 is rotated downward from the top dead center T to the bottom dead center B by its own weight and then is rotated upward from the bottom dead center B to the top dead center T by inertia. The non-driving area W is defined as a non-driving area W from a predetermined point S on the bottom dead center side to the point E, and the driving body 13 is forcibly turned upward from the predetermined point S to The starting power can be set small.

  When two drive sources 10 are installed with a 180 ° phase change, when one weight 16 is located at the bottom dead center B, the other weight 16 is located at the top dead center T. Have.

  For this reason, the auxiliary drive source 20 is a drive body of the other drive source 10 while the drive body 13 of one drive source 10 is rising from the bottom dead center B due to inertia relative to the pair of drive sources 10. The driving force of the auxiliary driving source 20 is not required in combination with the fact that 13 starts to descend. Therefore, the auxiliary drive source 20 does not need to be driven at all times, and power consumption can be suppressed.

  Since the auxiliary drive source 20 is a drive motor 21 that is driven by power supply only during a period in which the drive body 13 is located in the non-drive area W, the drive body 13 can be reliably rotated up and rotated. It becomes.

  The auxiliary drive source 20 can maintain the rotation of the main shaft 3 directly by forcibly turning and rotating the drive body 13 via the main shaft 3, and also uses the auxiliary drive force from the auxiliary drive source 20 as a drive source. 10 can be easily transmitted.

  By the way, the power conversion device 1 of the present invention is not limited to the above-described embodiment, and various technical changes can be made within the technical scope described in the claims within the scope of the invention. Included.

  For example, in the above-described embodiment, the auxiliary drive source 20 using the drive motor 21 is disclosed. For example, as shown in FIG. 5, the eccentric cam 25 and the leaf spring 26 are provided on the main shaft 3, and the eccentric cam 25 is provided. The rotational position of the tip, which is the maximum diameter of the weight, and the predetermined point S of the rotation locus L2 of the weight 16 are matched. Thus, after the leaf spring 26 is warped against the biasing force by the eccentric cam 25, the drive body 13 may be forcibly raised and rotated by forcibly pushing up the eccentric cam 25. In this case, you may use together with the drive motor 21. FIG. Further, instead of the leaf spring 26, a spiral spring or the like can be used.

  In the above description, for example, descriptions such as “horizontal”, “vertical”, and “vertical” are not strict meanings. In other words, “horizontal”, “vertical”, and “vertical” mean tolerances and errors in design, manufacturing, etc., and mean “substantially horizontal”, “substantially vertical”, and “substantially vertical”. . Here, the tolerance and error mean units in a range not departing from the configuration, operation, and effect of the present invention.

  Further, in the above description, when there are descriptions such as “same”, “equal”, “different”, etc., in terms of external dimensions and sizes, these descriptions are not strictly meant. That is, “same”, “equal”, “different” means that tolerances and errors in design, manufacturing, etc. are allowed, and “substantially the same”, “substantially equal”, “substantially different”. . Here, the tolerance and error mean units in a range not departing from the configuration, operation, and effect of the present invention.

  As described above, the power conversion device according to the present invention has a simple configuration and can intermittently drive the auxiliary drive source, and thus can efficiently convert the rotational force. And is useful for power conversion devices in general that convert the output of a drive source into rotational energy.

DESCRIPTION OF SYMBOLS 1 Power converter 3 Main shaft 4 Fixed gear 10 Drive source 20 Auxiliary drive source 11 Circumferential gear 11a Rotating shaft 12 Drive gear 12a Rotating shaft 13 Driver 14 Arm 15 Rotating arm 16 Weight

Claims (8)

A spindle with the central axis installed horizontally;
A fixed gear installed coaxially with the main shaft;
A drive source that rotates so as to rotate the main shaft with one end fixed to the main shaft;
An auxiliary drive source that forcibly rotates the drive source only during a rotation period in which the drive source is located in a non-drive area;
With
The drive source is
A revolving gear meshing with the fixed gear and revolving around the fixed gear;
A drive gear meshing with the circumferential gear;
A drive body having one end fixed with the rotation shaft of the drive gear as a rotation fulcrum;
An arm connecting the main shaft, the rotating shaft of the rotating gear and the rotating shaft of the drive gear;
A power conversion device comprising: The driver is
A rotating arm having one end fixed to the rotating shaft of the drive gear;
A weight fixed to the other end of the pivot arm;
A power converter according to claim 1. The driver is
The power conversion device according to claim 1 or 2, wherein a plurality of the rotation trajectories are installed on the main shaft such that the phases of the rotation trajectories are different at equal angles. The auxiliary drive source is
The driver is rotated downward from the top dead center to the bottom dead center by its own weight, and further upward from the bottom dead center to the top dead center by inertia. The power according to any one of claims 1 to 3, wherein the non-driving area from a predetermined point to a top dead center is used as the non-driving area, and the driving body is forcibly rotated upward from the predetermined point. Conversion device. The auxiliary drive source is
5. The power conversion device according to claim 1, wherein the drive body is a drive motor that is driven by receiving power supply only during a period in which the drive body is located in the non-drive area. The auxiliary drive source is
The power conversion device according to any one of claims 1 to 5, wherein the driving body is forcibly rotated upward via the main shaft. The rotating gear is
The same structure as that of the gear teeth of the fixed gear and the drive gear, and a diameter smaller than the diameter of at least one of the fixed gear and the drive gear. Power converter. The power converter according to claim 7, wherein the fixed gear and the drive gear have the same diameter.

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