JP7682118B2 - Control device and elevator device - Google Patents

Description

The present invention relates to a control device and elevator device with a door structure that can be opened and closed even in a narrow maintenance space.

As background technology relating to the structure of the door of a control device, Patent Document 1 discloses a control panel with a two-door structure that opens to the left and right, which is used in machine tools and the like (see paragraphs 0001, 0008 and Figure 1).

JP 2009-44844 A

Below, as an example of a control device, a control device used in an elevator device will be described. The control device for the elevator device is installed in a machine room. Maintenance personnel perform maintenance work by opening and closing the door of the control device, but it is difficult to secure a large space in the machine room where the control device is installed. If a large space cannot be secured for the installation location of the control device, there is an issue that the door cannot be opened and closed sufficiently, resulting in poor maintenance workability. The above-mentioned issue is not limited to the control device for the elevator device, but is also common to control devices installed in narrow spaces, such as the machine tool described in Patent Document 1, and other objects.

The object of the present invention is to provide a control device equipped with a door that can be opened and closed even in a small maintenance space.

In order to achieve the above object, the present invention provides
A control device including a housing frame, a mounting component disposed inside the housing frame, and a door portion rotatably provided with respect to the housing frame,
The door section has a main door frame and a sub door frame, and the thickness of the main door frame and the thickness of the sub door frame are changed to form a two-stage structure having a step in the thickness direction of the door section,
The step of the two-stage structure is formed on the front end surface side of the door portion ,
The secondary door frame is configured to be rotatable relative to the primary door frame .

With the control device configured as described above, the thickness of the door section of the control device is configured in two stages, improving the opening and closing performance of the door section without affecting the installation of the internal components of the control device, thereby providing a control device with excellent maintainability.

Problems, configurations, and advantages other than those described above will become clear from the description of the embodiments below.

FIG. 2 is a front view showing a control device according to an embodiment of the present invention. FIG. 2 is a side view of the control device of FIG. 1 . FIG. 2 is a top view of the control device of FIG. 1 with a door portion in an open state. FIG. 4 is a top view showing a control device of a comparative example to the present invention. FIG. 4 is a top view similar to FIG. 3, showing the dimensional relationship of the door portion. FIG. 11 is a front view showing a control device according to a modified example of the present invention. FIG. 7 is a top view of the control device of FIG. 6 . 7 is an enlarged view showing an end (side edge) of a door portion of the control device of FIG. 6. FIG. 1 is a schematic configuration diagram of an elevator device according to an embodiment of the present invention.

The following describes the configuration of the control device of the present invention with reference to the drawings. Note that the same reference numerals are used in each drawing to designate the same or similar components, and repeated explanations will be omitted.

In this embodiment, the door section of the control device has a two-stage thickness, which improves the opening and closing performance of the door section 5 and improves the maintenance workability of the control device without affecting the installation of the installed parts inside the control device. The control device of this embodiment can improve the opening and closing performance of the door section even when placed in a narrow space, such as the machine room of an elevator device.

Figure 1 is a front view showing a control device 10 according to one embodiment of the present invention. Figure 2 is a side view of the control device 10 of Figure 1. Figure 3 is a top view of the control device 10 of Figure 1, showing the door unit 5 in an open state. Note that in Figure 3, the door unit 5 in the open state is shown by a solid line, and the door unit 5 in the opening and closed states is shown by a dashed line.

As shown in Figures 1 to 3, the control device 10 includes a housing frame (first housing frame) 1, a housing frame (second housing frame) 2, components (mounted components) 3 to be mounted on the first housing frame 1, hinges 4 connecting the first housing frame 1 and the second housing frame 2, and a door portion 5 of the first housing frame 1.

The first housing frame 1 is a frame that constitutes the main body of the control device 10 and serves as the housing of the control device 10.

The door section 5 comprises a main door frame (door body) 5A and a secondary door frame (door side edge) 5B. The main door frame 5A is supported rotatably relative to the first housing frame 1 by a hinge (first hinge, main door frame hinge) 7 that connects the first housing frame 1 and the main door frame 5A. The secondary door frame 5B is provided on the side edge 5A2 opposite the side edge 5A1 supported by the hinge 7 of the main door frame 5A.

The first housing frame 1 carries components (mounted components) 3 inside. The second housing frame 2 carries components (mounted components) 8. The second housing frame 2 and components (mounted components) 8 are added to the first housing frame 1 as necessary.

The control device 10 is designed to be installed in a small space, so the thickness W10 of the first housing frame 1 is thin. Normally, only the component 3 is mounted, but when additional components need to be mounted, the second housing frame 2 is added to the first housing frame 1 using the hinge 4, and the component 8 is mounted on the second housing frame 2. By increasing the thickness of the main door frame 5A, the additionally mounted component 8 can be covered.

In other words, the second housing frame 2 is an additional frame (sub-frame) that is added to the first housing frame (main frame) 1. The component 8 is mounted on the second housing frame 2 so that it protrudes forward F from the front end surface 1a of the first housing frame 1, and the part protruding from the first housing frame 1 is covered by the main door frame 5A.

The control device 10 of this embodiment is configured so that the parts 8 protruding from the first housing frame 1 are covered by the main door frame 5A, so the thickness W5 (see FIG. 5) of the main door frame 5A, i.e., the door section 5, is thick. For this reason, in a configuration in which the door section 5 is not provided with a secondary door frame 5B, the turning radius of the door section 5 when it is opened or closed is large. This will be explained in detail below.

With reference to Figure 4, a control device in a comparative example with the present invention will be described. Figure 4 is a top view showing a control device 10' in a comparative example with the present invention. In Figure 4, the door section 5' in the closed state is shown by a dashed line.

As shown in Figure 4, the structure of the door section 5' of the control device 10' in the comparative example has a constant thickness W5' of the door section 5' and requires a large turning radius R1' when opening and closing the door section 5'. In particular, when the door section 5' is installed in a narrow machine room, the end (side edge) of the door section 5' comes into contact with the machine room wall, and the door section 5' cannot be opened wide, which reduces the workability of maintenance work on the internal components of the control device 10'.

As shown in FIG. 4, the door section 5 of this embodiment has a structure in which a second frame 5B, which has a smaller thickness W5B than the main door frame 5A, is attached to the end (side edge) 5A2 of the first frame 5A. By providing the door section 5 with a two-stage structure in which the second frame 5B is provided on the first frame 5A, the rotation radius R1 of the door section 5 when opening and closing can be reduced. Therefore, in this embodiment, the rotation radius R1 around the hinge 7 when opening and closing can be reduced compared to the comparative example, so that the door section 5 can be opened and closed widely without coming into contact with the indoor wall even in a limited maintenance space, improving the maintenance workability of the internal components of the control device 10.

Now, referring to FIG. 5, the rotation radius R1 of the door section 5 will be described in detail. FIG. 5 is a top view similar to FIG. 3, and shows the dimensional relationship of the door section 5. FIG. 5 shows two imaginary axes 7x and 7y that are perpendicular to each other with the rotation axis (center of rotation) of the hinge 7 as the intersection point and parallel to the plane of FIG. 5. Of the orthogonal axes 7x and 7y, axis 7x is parallel to the front surface 1a of the first housing frame 1.

In this embodiment, the thickness W5 of the main door frame 5A and the thickness W5B of the secondary door frame 5B are different, giving the door section 5 a two-stage structure with a step in the thickness direction.

The door section 5 rotates relative to the first housing frame 1 around the rotation axis of the hinge 7, and when the door section 5 is closed, the end face (rear end face) 5A3 of the main door frame 5A and the end face (rear end face) 5B3 of the sub door frame 5B abut against the end face (front end face) 1a of the first housing frame 1. Therefore, the end face (rear end face) 5A3 of the main door frame 5A and the (rear end face) 5B3 of the sub door frame 5B are arranged on a single plane.

In this case, the maximum rotation radius R1 of the door section 5 when it is opened or closed corresponds to the length of the straight line connecting the rotation axis of the hinge 7 and the corner 5B1 of the secondary door frame 5B.

When viewed from the rotation axis side of the hinge 7, the part at the tip of the door section 5 where the turning radius is the smallest is located on the axis 7x when the door section 5 is closed. In this embodiment, the end face (front end face) 5B4 of the secondary door frame 5B is located on the axis 7x, and the part at the tip of the door section 5 where the turning radius is the smallest (minimum turning radius part) is the corner 5B2 of the secondary door frame 5B. The turning radius of the corner 5B2 is the length of the straight line connecting the corner 5B2 and the rotation axis side of the hinge 7.

Therefore, the turning radius R1 of the door section 5 when it is opened or closed is larger than the turning radius of the corner 5B2. However, because the thickness W5B of the secondary door frame 5B in the turning direction is thin, the corner 5B1 is close to the corner 5B2, and the turning radius R1 of the door section 5, which is the turning radius of the corner 5B1, is only slightly larger than the turning radius of the corner 5B2.

The corners 5B1 and 5B2 are corners formed on the side edge (tip side edge) 5B6 on the opposite side to the contact surface (side edge) 5B5 of the secondary door frame 5B that contacts the primary door frame 5A.

In this embodiment, the rotation axis of the hinge 7 is located forward of the end surface 1a of the first housing frame 1 (below in FIG. 5). The rotation axis of the hinge 7 is also positioned closer to the end surface (front end surface) 5A4 of the main door frame 5A than to the end surface 5A3. When the door section 5 is closed, the rotation axis of the hinge 7 is located forward of the end surface 5A3 (below in FIG. 5).

As a support structure for the door section 5, it is preferable that the rotation axis of the hinge 7 is close to the end surface 1a of the first housing frame 1 and close to the end surface 5A3 of the main door frame 5A. This also allows the rotation radius R1 of the door section 5 to be close to the rotation radius (minimum rotation radius) of the part at the tip side of the door section 5 where the rotation radius is smallest.

In this embodiment, the rotation axis of the hinge 7 is located within a range of length (distance) from the end surface 5A3 of the main door frame 5A that is less than half (W5/2) of the thickness W5 of the door section 5. More preferably, the rotation axis of the hinge 7 is located within a range of length (distance) from the end surface 5A3 of the main door frame 5A that is less than one-quarter (W5/4) of the thickness W5 of the door section 5.

In order to reduce the turning radius of the tip side of the door section 5, it is necessary to limit the range in which the corner 5B2 of the subordinate door frame 5B is located on the opposite side of the corner 5B1 beyond the axis 7x. In this embodiment, the end face (front end face) 5B4 of the subordinate door frame 5B is configured to be located on the axis 7x, so the corner 5B1 of the subordinate door frame 5B is located at a distance W5B away from the axis 7x. In this case, it is preferable that the corner 5B2 of the subordinate door frame 5B is located at a distance of W5B or less from the axis 7x. In other words, if the corner 5B2 of the subordinate door frame 5B is located at a distance of W5B (the distance between the corner 5B1 and the axis 7x) or less from the axis 7x, the turning radius of the corner 5B2 will not be larger than the turning radius of the corner 5B1.

In this embodiment, the door section 5 is composed of a single door section, and a secondary door frame 5B is provided on all door sections 5 provided in the control device. Furthermore, the front end surface 5B4 of this secondary door frame 5B is not covered by other door sections. In other words, the secondary door frame 5B is configured so that it is exposed toward the front of the control device 10 when the door section 5 is closed. In this case, the secondary door frame 5B is configured so that its front end surface 5B4 is exposed toward the front of the control device 10. This allows the thickness of the side edge portion 5B6 of the door section 5 to be configured so that the turning radius R1 is small.

Next, a modified example of this embodiment will be described with reference to Figs. 6 to 8. Fig. 6 is a front view showing a control device according to a modified example of the present invention. Fig. 7 is a top view of the control device of Fig. 6. Fig. 8 is an enlarged view showing an end (side edge) of the door section 5 of the control device 10 of Fig. 6. Note that in Fig. 7, the door section 5 in the open state is shown in solid lines, and the door section 5 in the opening and closed states is shown in dashed lines. Also, in Fig. 8, the secondary door frame 5B in the open state is shown in solid lines, and the secondary door frame 5B in the opening and closed states is shown in dashed lines.

The above-mentioned embodiment is based on the premise that the main door frame 5A and the sub door frame 5B are manufactured by processing from a single frame, and the main door frame 5A and the sub door frame 5B are fixed to form a two-stage door section 5, but it is also possible to form a two-stage structure in which the main door frame 5A and the sub door frame 5B are separated and connected with a hinge (second hinge, sub door frame hinge) 9. In this example, only the configuration in which the main door frame 5A and the sub door frame 5B are separated and connected with a hinge 9 to form a two-stage structure differs from the above-mentioned embodiment, and the other configurations are the same as those of the above-mentioned embodiment.

In this example, the hinge 9 allows the end of the door section 5 (sub-door frame 5B) to rotate relative to the main body of the door section 5 (main door frame 5A). In this case, the main door frame 5A and the sub-door frame 5B are connected by the hinge 9, and the sub-door frame 5B is rotatably supported relative to the main door frame 5A. Since the hinge 9 allows the sub-door frame 5B to rotate and be folded toward the main door frame 5A, if the turning radius when the door section 5 is opened or closed is R2, R2 can be made even smaller than R1. Therefore, the use of the hinge 9 further reduces the turning radius, making it possible to accommodate even narrower maintenance spaces.

Also, as shown in FIG. 8, the contact surface (side edge) 5A2 of the main door frame 5A that contacts the secondary door frame 5B and the contact surface (side edge) 5B5 of the secondary door frame 5B that contacts the main door frame 5A come into contact with each other, which makes it possible to prevent the secondary door frame 5B itself from rotating in the opposite direction. In other words, the secondary door frame 5B is configured to be rotatable in one direction relative to the main door frame 5A when the door section 5 is closed. And the secondary door frame 5B has a certain thickness W5B, which prevents it from rotating in the opposite direction.

According to the configuration of the above-mentioned embodiment including the modified example, in the control device 10 having the housing section (first housing frame) 1 and the door section 5, by making the thickness of the door section 5 a two-stage structure, the rotation radius R1 around the hinge 7 as the rotation axis is smaller than in the case of a normal door section, and the door section 5 can be opened and closed even in a limited maintenance space, improving maintenance workability. In addition, since it is possible to install the control device 10 in a position close to the wall, the freedom of placement of the control device 10 in the placement space is improved.

The general configuration of an elevator system 100 to which this embodiment is applied is described with reference to FIG. 1. FIG. 9 is a general configuration diagram of an elevator system 100 according to one embodiment of the present invention.

The elevator device 100 is configured such that a lifting body (car) 103 and a counterweight 104 are connected by a main rope 105 in a hoistway 102 provided in a building 200, and the car 103 can rise and fall along a guide rail 107. Inside a machine room 101 formed at the top of the hoistway 102, a hoisting machine 106 around which the main rope 105 is wound, a control device 10 that controls the hoisting machine 106, a governor 110, etc. are arranged.

The governor 110 is composed of an endless governor rope 111 stretched over the entire length of the ascent and descent stroke in the elevator shaft 102, and a sheave (governor pulley) installed in the machine room 101 around which the governor rope 111 is wound. The governor 110 detects the overspeed of the car 103 and activates the emergency stop device 108, which will be described later.

In this embodiment, the maintenance workability of the control device 10 is improved, making it possible to provide an elevator device 100 with excellent maintainability.

The control device of the present invention is not limited to the above-mentioned embodiment, and various modifications are possible within the scope of the gist of the invention described in the claims. Therefore, the present invention is not limited to the above-mentioned examples, and includes various modifications. For example, the above-mentioned examples have been described in detail to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations. In addition, it is possible to replace part of the configuration of one example with the configuration of another example, and it is also possible to add the configuration of another example to the configuration of one example. In addition, it is possible to add, delete, or replace part of the configuration of each example with other configurations.

1...Case frame (first case frame), 1a...Front end surface of case frame 1, 3...Mounted component, 5...Door section, 5A...Main door frame, 5A3...Rear end surface of main door frame 5A, 5A4...Front end surface of door section 5 and main door frame 5A, 5B...Sub-door frame, 5B3...Rear end surface of sub-door frame 5B, 5B4...Front end surface of sub-door frame 5B, 7...Hinge (first hinge), 9...Hinge (second hinge), 10...Control device, 100...Elevator device, 101...Machine room, 102...Hoistway, 103...Cab, 104...Counterweight, 105...Main rope, 106...Hoisting machine, W5...Thickness of main door frame 5A, W5B...Thickness of sub-door frame 5B.

Claims (9)

A control device including a housing frame, a mounting component disposed inside the housing frame, and a door portion rotatably provided with respect to the housing frame,
The door section has a main door frame and a sub door frame, and the thickness of the main door frame and the thickness of the sub door frame are changed to form a two-stage structure having a step in the thickness direction of the door section,
The step of the two-stage structure is formed on the front end surface side of the door portion ,
The control device is characterized in that the secondary door frame is configured to be rotatable relative to the main door frame . the mounting component is disposed so as to protrude forward from a front end surface of the housing frame,
The control device according to claim 1 , wherein the main door frame is structured to cover a portion of the mounted component that protrudes forward from the front end surface of the housing frame. The control device according to claim 1, characterized in that the secondary door frame is configured to be exposed toward the front of the control device without being covered by other door parts when the door part is closed. The main door frame is rotatably supported on the housing frame by a first hinge,
the main door frame has a rear end surface that abuts against the front end surface of the housing frame when the door portion is closed, and a front end surface located on the opposite side to the rear end surface,
The control device according to claim 1 , wherein the rotation axis of the first hinge is disposed closer to the rear end surface of the main door frame than to the front end surface in a thickness direction of the main door frame. the main door frame has a rear end surface that abuts against the front end surface of the housing frame when the door portion is closed, and a front end surface located on the opposite side to the rear end surface,
The secondary door frame has a rear end surface that abuts against the front end surface of the housing frame when the door portion is closed, and a front end surface located on the opposite side to the rear end surface,
The control device according to claim 1 , wherein the rear end surface of the main door frame and the rear end surface of the sub door frame are arranged on a single plane when the door sections are closed . 2. The control device according to claim 1 , wherein the main door frame and the secondary door frame are connected by a second hinge, and the secondary door frame is axially supported so as to be rotatable relative to the main door frame. The secondary door frame is configured to be rotatable in one direction relative to the primary door frame from a state in which the door section is closed,
The control device according to claim 6 , wherein the secondary door frame has a certain thickness to prevent rotation in the reverse direction. In an elevator device that raises and lowers a passenger car in a hoistway,
An elevator system comprising the control device according to any one of claims 1 to 7 as a control device for controlling the elevation and lowering of the car. The elevator comprises a counterweight, a main rope connecting the elevator car and the counterweight, and a hoist around which the main rope is wound;
9. The elevator apparatus according to claim 8 , wherein the control device is disposed inside a machine room provided at an upper portion of the elevator shaft.

Images