JP6537116B2 - Lid opening and closing mechanism using linear actuator - Google Patents

Description

  The present invention relates to a linear actuator (preferably, an electric cylinder using a motor and a cylinder) and an opening / closing mechanism of a lid of a container using the linear actuator.

  The applications of linear actuators are diverse and some are used to open and close lids that close the opening of mainly cylindrical containers, such as furnaces and furnaces. As an example, there is one shown in Patent Document 1.

JP, 2009-34605, A

  Patent Document 1 discloses a hazardous waste disposal apparatus comprising an electric cylinder for opening and closing an upper lid and a lower lid of a melting furnace. In this processing apparatus, the upper lid and the lower lid can be freely opened and closed by an opening and closing mechanism using an electric cylinder.

  However, in the case of the opening / closing mechanism as disclosed in Patent Document 1, the base end side of the outer cylinder of the electric cylinder is attached to the side surface of the melting furnace main body and the tip of the rod is attached to the hinge. It is easy to enlarge the member for connecting the hinge and the hinge.

  SUMMARY OF THE INVENTION In view of the problems of the prior art described above, it is an object of the present invention to provide a linear operating device that can be suitably used for the opening and closing mechanism of a container lid and a simple opening and closing mechanism using the same.

The invention relates to a container with an opening,
A lid which covers the opening and which is attached to the container via a hinge and which opens and closes circumferentially with respect to the axis of the hinge;
An outer cylinder, a rod provided inside the outer cylinder, a drive unit located on the base end side of the outer cylinder and the rod, for advancing and retracting the rod with respect to the outer cylinder, provided at the tip of the rod A linear actuator having a first connection portion and a second connection portion provided at the tip of the outer cylinder,
The first connection portion is connected to the container, and the rod is rotatably supported on the container such that the rod moves forward and backward with the first connection portion as a fulcrum;
The second connection portion is connected to the lid or hinge, and rotatably supports the outer cylinder with respect to the lid or hinge;
A lid opening / closing mechanism characterized in that the first connecting portion and the second connecting portion are aligned on the same line in a direction orthogonal to the axial direction of the hinge;
as well as,
A container with an opening;
A palm fruit steamer which covers the opening, is attached to the container via a hinge and has a lid which opens and closes circumferentially with respect to the axis of the hinge,
An outer cylinder, a rod provided inside the outer cylinder, a drive unit located on the base end side of the outer cylinder and the rod, for advancing and retracting the rod with respect to the outer cylinder, provided at the tip of the rod A linear actuator having a first connection portion and a second connection portion provided at the tip of the outer cylinder,
The first connection portion is connected to the container, and the rod is rotatably supported on the container such that the rod moves forward and backward with the first connection portion as a fulcrum;
The second connection portion is connected to the lid or hinge, and rotatably supports the outer cylinder with respect to the lid or hinge;
The first connection portion and the second connection portion are arranged on the same line in a direction orthogonal to the axial direction of the hinge.
The problem was solved by palm fruit steaming pot.

According to the linear actuator of the present invention, the rod is moved forward and backward with the first connecting portion as the fulcrum, and the second connecting portion is provided at the tip of the outer cylinder, so it is relatively more complicated than the hydraulic cylinder Even linear actuators having long dimensions can be suitably used for the lid opening and closing mechanism. Specifically, the first connection portion and the second connection portion are arranged on the same line perpendicular to the axial direction of the hinge for opening and closing the lid, and the first connection portion is used as a container The lid opening / closing mechanism can be realized by respectively connecting the connecting portion to the lid or the hinge (driven object) and rotatably supporting the rod and the outer cylinder with respect to the container and the lid or the hinge.

  In particular, the lid opening and closing mechanism of the present invention is preferably used for a palm fruit steaming pot. As a mechanism for opening and closing the lid of a kneader used for food processing like a palm fruit steaming pot, it is preferable to use an electric cylinder without risk of oil leakage etc. The present invention relates to a lid opening and closing mechanism using an electric cylinder. Particularly suitable for

BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows 1st embodiment of the linear actuator of this invention. The front view which shows the closed state of the lid opening / closing mechanism using the linear actuator of FIG. The front view which shows the open state of FIG. The front view which shows the closed state of the lid opening / closing mechanism using the linear actuator of 2nd embodiment of this invention.

  Embodiments of the present invention will be described with reference to FIGS. However, the present invention is not limited to this embodiment.

  FIG. 1 illustrates a linear actuator 10 of the present invention. The linear actuator 10 comprises an outer cylinder 22 and a rod 32 provided inside the outer cylinder 22. The rod 32 is provided so as to be movable forward and backward with respect to the outer cylinder 22. In the case of the linear actuator 10, the drive part GM is constituted by the motor M and the gear G disposed on the base end side of the outer cylinder 22 and the rod 32, and the torque from the motor M is decelerated by the gear mechanism in the gear G. The torque is transmitted to a screw shaft (not shown) in the outer cylinder 22. The torque transmitted to the screw shaft is converted into linear motion by a linear motion conversion mechanism (not shown), and causes the rod 32 to advance and retract relative to the outer cylinder 22. Note that a linear motion conversion mechanism using a screw is well known and is not the subject of the present invention, so a detailed description will be omitted.

At the tip of the rod 32, a first connecting portion 34 is provided for moving the rod 32 forward and backward with the tip as a fulcrum . The first connecting portion 34 is a hole passing through the rod 32, but may be a trunnion (cylindrical projection). On the other hand, the linear actuator 10 is provided with a second connecting portion 24 at the tip of the outer cylinder 22 in addition to the first connecting portion 34. The second connection portion 24 is a trunnion, and a trunnion metal fitting 26 which is a support member is mounted. With this configuration, the outer cylinder 22 is rotatably supported relative to the trunnion fitting 26. As described above, since the linear actuator 10 is provided not only at the tip of the rod 32 but also at the tip of the outer cylinder 22, the linear actuator 10 can be suitably used for the lid opening / closing mechanism as described later.

  As described above, the drive portion GM of the linear actuator 10 is composed of the motor M and the gear G. The gear G incorporates a parallel gear mechanism (not shown), and the torque of the motor M is decelerated and transmitted to a screw shaft (not shown) in the outer cylinder 22. In the case of the linear actuator 10, the axial direction of the motor M and the axial direction of the outer cylinder 22 are parallel to each other, but the configuration of the drive part GM is not limited to this. Depending on the gear mechanism incorporated in the gear G, the axial direction of the motor M may be orthogonal to the axial direction of the outer cylinder 22, and the axial directions of the motor M and the outer cylinder 22 coincide with a straight line. Can also be configured. In the case where the axial directions of the motor M and the outer cylinder 22 coincide with each other on a straight line, a planetary gear mechanism can be suitably used as the gear G. In addition, as a drive part and linear motion conversion mechanism that can be used for the linear actuator 10, for example, it is also possible to use a drive mechanism and linear motion conversion mechanism other than a gear motor, such as a hydraulic mechanism and hydraulic cylinder using hydraulic fluid and a pump. it can.

  Next, the lid opening / closing mechanism 100 using the linear actuator 10 will be described with reference to FIGS. The container 42 is cylindrical and has an opening 42a in the vertical direction so that an object can be put therein, and has a lid 44 covering the opening 42a. The lid 44 is attached to the container 42 via a hinge 46. A pin (shaft) 46a that determines the axial direction of the hinge 46 is inserted from the front to the back of the drawing. Thereby, the lid 44 opens and closes in the axial direction of the hinge 46, that is, in the circumferential direction with respect to the axial direction of the pin 46a.

The first connecting portion 34 and the second connecting portion 24 of the linear actuator 10 are connected to the container 42 and the lid 44 or the hinge 46 (driven object) , respectively. As illustrated, when the large hinge 46 is used, the second connecting portion 24 can be easily connected to the hinge 46. In the lid opening / closing mechanism 100, the first connecting portion 34 is attached to the outer surface of the container 42 via the connecting member 48. Here, the first connecting portion 34 and the connecting member 48 are rotatably attached to each other by being fixed by bolts or the like passing through both. On the other hand, since the trunnion metal fitting 26 is attached to the second connection portion 24, by fixing the trunnion 26 to the hinge 46, as a result, the outer cylinder 22 is rotatably connected to the hinge 46. At this time, the first connecting portion 34 and the second connecting portion 24 are arranged on the same line in the axial direction of the hinge 46, that is, in the direction orthogonal to the axial direction of the pin 46a of the hinge 46. Thus, the lid opening / closing mechanism 100 using the linear actuator 10 of the present invention does not require a large-sized member for connecting the tip of the rod and the hinge as in the prior art, so that it is easy to attach with a simple structure. The lid opening and closing mechanism can be easily retrofitted.

  When the motor M is driven from the state shown in FIG. 2 and the linear actuator 10 is contracted, the state shown in FIG. 3 is obtained, and the lid 44 can be opened. As apparent from FIGS. 2 and 3, in the lid opening and closing mechanism 100, the angle of the outer cylinder 22 with respect to the lid 44 or hinge 46 and the angle of the rod 32 with respect to the container 42 change between the closed state and the open state of the lid 44. For this reason, it is necessary to rotatably support the rod 32 with respect to the container 42 with respect to the outer cylinder 22 with respect to the lid 44 or the hinge 46, respectively. The outer cylinder 22 may be rotatably connected to the lid 44 or the hinge 46 by the trunnion metal fitting 26 being rotatably mounted to the hinge 46.

  Here, in order to realize smooth opening and closing of the lid 44, the first connecting portion 34 and the second connecting portion 24 may be disposed within the range of the pin 46a of the hinge 46. Further, in the case of the linear actuator 10 of the type in which the axial direction of the motor M and the axial direction of the outer cylinder 22 are parallel to each other as shown, the motor M is opposite to the lid 44 or the hinge 46 with respect to the outer cylinder 22. It should be configured to be located at This is because the motor M can be prevented from interfering with the lid 44 when the lid 44 is opened and closed. There is also an advantage that the wiring to the motor M is easy.

  In the lid opening and closing mechanism 100 having the above configuration, the drive unit (in the case of the lid opening and closing mechanism 100, the motor M and the gear G) is located on the lid side. Therefore, even a motorized cylinder having a relatively long dimension can be used for the lid opening / closing mechanism without interfering with the container 42 or the like. That is, since the electric cylinder can be easily used as a linear actuator of the lid opening and closing mechanism, the risk of oil leakage can be eliminated as compared with the lid opening and closing mechanism using the hydraulic cylinder, and power consumption can be reduced and maintainability. Can be improved. When an electric cylinder is used, a rotation angle sensor (not shown) is attached to the hinge 46, and the motor M is controlled by calculating the relationship between the degree of extension of the rod 32 to the outer cylinder 22 and the rotation angle of the hinge 46. The degree of opening and closing of the lid 44 can be finely controlled. As another method, it is also possible to control the degree of opening and closing of the lid 44 using a thrust detection switch incorporated in the electric cylinder main body.

  FIG. 4 is a view showing a closed state of the lid opening / closing mechanism 100a using the linear actuator 10a according to the second embodiment of the present invention. The lid opening and closing mechanism 100a basically has the same configuration as the lid opening and closing mechanism 100, but is provided so that the opening 42a of the container 42 is directed in the horizontal direction. Here, when using a linear actuator 10a of a type in which the axial direction of the motor M and the axial direction of the outer cylinder 22 are parallel, the motor M is disposed vertically upward (front side in the figure) with respect to the outer cylinder 22. It is good to set up. This is because it is possible to reduce the unbalanced load applied to the connecting portion of the motor M and the gear G, the first connecting portion 34, and the second connecting portion 24.

  The linear actuators 10 and 10a of the present invention described above are the opening and closing mechanisms of the lid of a coffin used for food processing, in particular, the lid (corresponding to the container 42 of FIGS. 2 to 4) of a palm fruit steaming pot. It is preferable to use as an opening / closing mechanism of 2 to 4 lids 44). The lid opening and closing mechanism using a hydraulic cylinder has a risk of oil leakage and has a large effect on food when an accident occurs, while the linear actuators 10 and 10a are suitable for the lid opening and closing mechanism 100 and 100a using an electric cylinder, This is because the electric cylinder does not have the risk of oil leakage and the like. Further, since the lid opening / closing mechanism 100, 100a is easy to install with a simple configuration, it can be easily replaced with the lid opening / closing mechanism using a hydraulic cylinder.

  As described above, the linear actuator according to the present invention is provided with the second connecting portion at the tip of the outer cylinder, so that even the electric cylinder having a relatively long dimension can be suitably used for the lid opening / closing mechanism. According to the lid opening and closing mechanism using the linear actuator of the present invention, the opening and closing mechanism having a simple structure can be obtained.

DESCRIPTION OF SYMBOLS 10, 10a Linear actuator 22 Outer cylinder 24 2nd connection part 32 rod 34 1st connection part 42 container 42a opening part 44 lid 46 hinge 46a pin (shaft of hinge)
100, 100a lid opening and closing mechanism GM drive M motor

Claims (3)

A container with an opening;
A lid which covers the opening and which is attached to the container via a hinge and which opens and closes circumferentially with respect to the axis of the hinge;
An outer cylinder, a rod provided inside the outer cylinder, a drive unit located on the base end side of the outer cylinder and the rod, for advancing and retracting the rod with respect to the outer cylinder, provided at the tip of the rod A linear actuator having a first connection portion and a second connection portion provided at the tip of the outer cylinder,
The first connection portion is connected to the container, and the rod is rotatably supported on the container such that the rod moves forward and backward with the first connection portion as a fulcrum;
The second connection portion is connected to the lid or hinge, and rotatably supports the outer cylinder with respect to the lid or hinge;
The first connection portion and the second connection portion are arranged on the same line in a direction orthogonal to the axial direction of the hinge.
Lid opening and closing mechanism. A container with an opening;
A palm fruit steamer which covers the opening, is attached to the container via a hinge and has a lid which opens and closes circumferentially with respect to the axis of the hinge,
An outer cylinder, a rod provided inside the outer cylinder, a drive unit located on the base end side of the outer cylinder and the rod, for advancing and retracting the rod with respect to the outer cylinder, provided at the tip of the rod A linear actuator having a first connection portion and a second connection portion provided at the tip of the outer cylinder,
The first connection portion is connected to the container, and the rod is rotatably supported on the container such that the rod moves forward and backward with the first connection portion as a fulcrum;
The second connection portion is connected to the lid or hinge, and rotatably supports the outer cylinder with respect to the lid or hinge;
The first connection portion and the second connection portion are arranged on the same line in a direction orthogonal to the axial direction of the hinge.
Palm fruit steamer.   The lid opening / closing mechanism or palm fruit steaming according to claim 1 or 2, wherein the drive unit is a motor, and the rotational torque of the motor is converted into linear motion by a linear motion conversion mechanism comprising a screw to advance and retract the rod. Kettle.

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