Lifting device

Abstract

To provide a lifting / lowering device capable of changing a height through a simple operation.SOLUTION: A lifting / lowering device 1 includes: a pulley 3; a wire 2 or a cord wound around the pulley 3; a pair of fixing plates 5 capable of fixing the wire 2 or the cord therebetween; an urging member 7 disposed in a state where the pair of fixing plates 5 are brought closer to each other to generate an urging force for fixing the wire 2 or the cord; and an operating portion 6 configured to release fixing of the wire 2 or the cord by pressing the urging member 7 against the urging force through an operation of an operator, thereby separating the pair of fixing plates 5 from each other.SELECTED DRAWING: Figure 3A

Description

[Technical Field]

[0001] The present disclosure relates to a lifting device. [Background technology]

[0002] Conventionally, a device has been proposed that allows for changing the hanging height when hanging and holding an object (see, for example, Patent Document 1). This device has a lever disposed inside, and is configured so that the hanging cord is fixed when the object is lifted and pulled and then released. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 8-188389 Summary of the Invention [Problem to be solved by the invention]

[0004] Each time the suspension height was changed, the suspended object had to be lifted. A lifting device that allows height adjustment with simpler operation is desired. [Means for solving the problem]

[0005] The present disclosure relates to a lifting device comprising a pulley, a wire or string that is threaded around the pulley, a pair of fixing plates that can be fixed by sandwiching the wire or string therebetween, a biasing member that is arranged in a state in which a biasing force is generated to bring the pair of fixing plates closer together and fix the wire or string, and an operating unit that, when operated by an operator, presses the biasing member against the biasing force, thereby separating the pair of fixing plates and releasing the fixation of the wire or string. [Brief explanation of the drawings]

[0006] [Figure 1] 1 is a perspective view showing a lifting device according to an embodiment of the present invention; [Figure 2]FIG. 2 is a front view showing the inside of the lifting device of the present embodiment. [Figure 3A] FIG. 2 is a vertical cross-sectional view of the lifting device of the present embodiment with the suspension cord fixed. [Figure 3B] FIG. 2 is a vertical cross-sectional view of the lifting device of the present embodiment in a state where the suspension cord is being moved. [Figure 4] FIG. 10 is a front view showing a lifting device according to another embodiment. [Figure 5] FIG. 10 is a side view showing a lifting device and an energized suspension rail according to another embodiment. [Figure 6] FIG. 10 is a side cross-sectional view of an energized suspension rail according to yet another embodiment. [Figure 7] FIG. 10 is a side cross-sectional view of an energized suspension rail according to yet another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0007] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. As shown in Fig. 1, a lifting device 1 is suspended from a wall surface 200 in a room and is capable of suspending an object T, such as a small item like a hat or an interior decoration like a painting. The lifting device 1 includes a wire 2, a pulley 3, a holder 4, a fixed plate 5, an operating unit 6, a biasing member 7, and a cover 8.

[0008] The wire 2 is made by bundling and twisting together multiple thin metal threads. A metal fitting or the like for suspending an object T is attached to the end of the wire 2, and the object T is suspended from the wire 2 and raised and lowered.

[0009] The pulley 3 is a generally cylindrical part around which the wire 2 is wound and which rotates so as to change the position of the tip of the wire 2. The pulley has a front surface 3a, a back surface 3b, a groove 31, and a through-hole 32. The front surface 3a is the surface of the disc-shaped surface of the pulley 3 that faces the room interior. The back surface 3b is the surface of the disc-shaped surface of the pulley 3 that faces the wall surface 200. Hereinafter in this specification, the wall surface 200 side will be referred to as the back, and the room interior will be referred to as the front.

[0010] 3A and 3B, the groove 31 is formed in the center in the thickness direction, and one wire 2 is wound around the groove 31. The through-hole 32 is a hole that passes through the center of the pulley 3 in the thickness direction, and a pulley holding shaft 42, which will be described later, passes through the through-hole 32.

[0011] The holding portion 4 is a plate-like component that holds the pulley 3 and components such as a fixed plate 5 (described later) in predetermined positions. The holding portion 4 has a pair of holding plates 41, a pulley holding shaft 42, an intermediate holding shaft 43, and an operating shaft through-hole 44.

[0012] A pair of retaining plates 41 are arranged facing each other on the front surface 3a and back surface 3b of the pulley 3, with the pulley 3 arranged between them. The pulley retaining shaft 42 is formed by a pulley retaining shaft shaft 422 passing through a pulley retaining shaft through hole 421 arranged at the top of the retaining plate 41. As shown in FIG. 2, three intermediate retaining shafts 43 are arranged below approximately the center of the retaining plate 41 in the vertical direction. Each intermediate retaining shaft 43 is formed by an intermediate retaining shaft shaft 432 passing through an intermediate retaining shaft through hole 431. The intermediate retaining shaft 43 holds a pair of fixing plates 5, described later, together with the pair of retaining plates 41. The operating shaft through hole 44 is arranged below the intermediate retaining shaft 43 and is a through hole through which an operating shaft 61, described later, is inserted.

[0013] The fixed plates 5 are a pair of plates that sandwich and fix the wire 2 therebetween. The fixed plates 5 are arranged inside the pair of holding plates 41 and below the pulley 3. The pair of fixed plates 5 has a fixed fixed plate 51 and a movable fixed plate 52. The fixed fixed plate 51 is fixed with a screw 515 so as to abut against the back surface of the holding plate 41 on the indoor side of the pair of holding plates 41.

[0014] As shown in FIG. 2, the immovable fixed plate 51 has a rectangular shape in a front view. As shown in FIGS. 3A and 3B, in a side cross-sectional view, the immovable fixed plate 51 has a flat surface 511, an immovable recess 512, a retaining shaft hole 513, and an operating shaft hole 514. The flat surface 511 is disposed near the periphery and at the top of the immovable fixed plate 51, and extends flat. The flat surface 511 extends linearly in the vertical direction in a side cross-sectional view. The immovable recess 512 is located in the center of the immovable fixed plate 51 in a front view, recessed from the flat surface 511 toward the rear and protruding toward the rear. The retaining shaft hole 513 is disposed in the flat surface 511 and overlaps with the intermediate retaining shaft through-hole 431 of the intermediate retaining shaft 43 in the depth direction. The operating shaft hole 514 is disposed in the immovable recess 512 and overlaps with the operating shaft through-hole 44 in the depth direction.

[0015] The movable fixed plate 52 is disposed on the rear side of the immovable fixed plate 51. The movable fixed plate 52 has a rectangular shape similar to the immovable fixed plate 51 when viewed from the front, and a shape that follows the concave and convex shape of the immovable fixed plate 51 when viewed in cross section from the side. That is, as shown in FIGS. 3A and 3B , the movable fixed plate 52 has an upper abutment portion 521, a movable recess 522, a retaining shaft hole 523, and an operating shaft hole 524. The upper abutment portion 521 has a surface that can abut against the rear surface of the flat surface 511 of the immovable fixed plate 51. The movable recess 522 is disposed below the upper abutment portion 521. The movable recess 522 is recessed so as to abut against the rear surface of the immovable recess 512, following the shape of the immovable recess 512 that is recessed toward the rear side of the immovable fixed plate 51. The retaining shaft hole 523 is disposed in the upper contact portion 521, and overlaps in the depth direction with the intermediate retaining shaft portion through-hole 431 and the retaining shaft hole 513. The operating shaft hole 524 is disposed in the movable recess 522, and overlaps in the depth direction with the operating shaft through-hole 44 and the operating shaft hole 514.

[0016] The intermediate holding shaft body 432 of the intermediate holding shaft 43 passes through the intermediate holding shaft through-hole 431 of the holding plate 41, the holding shaft hole 513 of the immovable fixed plate 51, and the holding shaft hole 523 of the movable fixed plate 52, thereby simultaneously holding the holding plate 41 and the fixed plate 5. At this time, the holding shaft hole 523 of the movable fixed plate 52 is in contact with the intermediate holding shaft body 432 with a dimension that allows it to move in the depth-front direction along the intermediate holding shaft body 432.

[0017] The operating unit 6 has an operating shaft 61 as a shaft, and a head 62 that is disposed at the end of the operating shaft 61 and has a larger outer diameter than the operating shaft 61. A lid 82 of the cover 8, which will be described later, is connected to the head 62 to form the operating unit 6.

[0018] The operating shaft 61 is substantially cylindrical and penetrates the pair of holding plates 41 and the pair of fixed plates 5. More specifically, the operating shaft 61 passes through the operating shaft through-hole 44 of the holding plate 41 and the operating shaft shaft holes 514 and 524 of the fixed plate 5, and protrudes through the rear holding plate 41. The rear end of the operating shaft 61 is fixed to the rear surface of the movable fixed plate 52 by a nut 63. The operating shaft 61 is formed so that its diameter is smaller on the rear side than on the front side. An expanded diameter surface 61a, formed by the front side of the operating shaft 61 being larger in diameter than the rear side, engages with the surface side of the movable fixed plate 52. The operating shaft 61 is sandwiched between the expanded diameter surface 61a and the nut 63 and connected and fixed to the movable fixed plate 52. As a result, the movable fixed plate 52 moves in accordance with the movement of the operating shaft 61. The operating shaft 61 moves along the axial direction so as to approach or move away from the immovable fixed plate 51 due to the biasing force of the biasing member 7 described later.

[0019] The head 62 has a disk-like shape extending from the front end of the operating shaft 61 and having a larger diameter than the operating shaft 61. The head 62 protrudes forward, passing through the front retaining plate 41. The head 62 has an outer diameter that allows it to fit into the inner periphery of the immovable recess 512 of the immovable fixed plate 51. The head 62 is connected to a lid portion 82 of a cover 8, which will be described later, and serves as a button that the head 62 presses. The operating unit 6 is configured so that the immovable fixed plate 51 and the movable fixed plate 52, which constitute the pair of fixed plates 5, can be separated from each other by the operator pressing the head 62 against the biasing force of a biasing member 7, which will be described later, thereby releasing the fixation of the wire 2.

[0020] The biasing member 7 is a coil spring. The biasing member 7 is arranged on the fixed plate 51 side of the operating shaft 61. More specifically, the biasing member 7 is attached between the back surface of the head 62 of the operating unit 6 and the fixed recess 512 of the fixed plate 51, with the operating shaft 61 arranged inside. As shown in FIG. 3A , the biasing member 7 is arranged in a compressed state, that is, with a biasing force generated to sandwich and fix the wire 2 between the fixed plate 51 and the movable fixed plate 52. The biasing member 7 biases the operating shaft 61 toward the interior of the room, and moves the movable fixed plate 52, which is fixed to the operating shaft 61, closer to the fixed plate 51.

[0021] The cover 8 is a component capable of accommodating the wire 2, pulley 3, holder 4, fixed plate 5, operating shaft 61, and biasing member 7 therein. The cover 8 has a case 81 and a lid 82. The case 81 has the shape of a cylindrical container with a bottom that opens toward the back and is generally closed toward the front. As shown in FIGS. 3A and 3B , the case 81 has a flat portion 811, a peripheral rib 812, a wire opening 813, an operating shaft opening 814, and a case-side lid guide portion 815.

[0022] The flat surface 811 forms the bottom of the cylindrical cover 8 and is located on the interior side when the lifting device 1 is installed. The flat surface 811 is formed in a substantially circular shape. The peripheral rib 812 is a rib that rises from the periphery of the flat surface 811 toward the front. The lid portion 82 (described later) engages with the peripheral rib 812. The wire opening 813 is formed by cutting out a portion of the side wall of the case 81 downward, allowing the wire 2 to hang down. The operating shaft opening 814 is an opening through which the head 62 of the operating shaft 61 can be inserted, and has a circular opening at a position corresponding to the operating shaft 61. The operating shaft 61 protrudes from the flat surface 811, passing through the operating shaft opening 814. The case-side lid guide portion 815 is a protrusion that protrudes from the flat surface 811 toward the interior side of the room, as shown in FIG. 1 . The case-side lid guide portion 815 is formed by two substantially rectangular plates that protrude with a gap between them.

[0023] The lid 82 has a cylindrical shape with a bottom that is slightly larger in diameter than the case 81 and covers the flat surface 811 of the case 81. The lid 82 has a surface 821, a side wall 822, a housing engagement portion 823, and a lid-side guide portion 824. The bottom of the surface 821 faces the interior of the compartment, and the center bulges out at a gentle slope. The side wall 822 extends from the periphery of the surface 821 toward the case 81. The side wall 822 is located on the outer periphery of the peripheral rib 812. The housing engagement portion 823 protrudes from the back surface of the surface 821 toward the rear and engages with the head 62 of the operating shaft 61 to prevent disengagement. The housing engagement portion 823 connects the lid 82 to the head 62 and operating shaft 61. As a result, the force applied to the lid portion 82 is transmitted to the head 62 of the operating shaft 61, and the lid portion 82 constitutes the operating portion 6. The lid portion-side lid portion guide portion 824 is a protrusion that protrudes toward the case 81 from the upper part of the storage portion engagement portion 823. The lid portion-side lid portion guide portion 824 is arranged so as to be sandwiched between the case-side lid portion guide portions 815 of the case 81. The lid portion-side lid portion guide portion 824 is arranged to prevent the lid portion 82 from wobbling or shifting.

[0024] As shown in Fig. 3A, when the wire 2 is fixed, the cover 82 is arranged so as to float away from the flat surface 811 toward the indoor side. As shown in Fig. 3B, when the operator presses the cover 82, the head 62 of the operating shaft 61 engaged with the cover 82 is pressed, and the operating shaft 61 moves toward the rear.

[0025] The movement of the wire 2 will be described with reference to FIGS. 3A and 3B. As shown in FIG. 3A, the wire 2, which is wound around the pulley 3, passes between the fixed fixed plate 51 and the movable fixed plate 52 of the pair of fixed plates 5. The biasing member 7 is compressed, biasing the operating shaft 61 toward the interior of the room, so that the movable fixed plate 52, which is fixed to the operating shaft 61, biases the fixed fixed plate 51. This fixes the wire 2. Next, when the lid 82 is pressed, the head 62 of the operating shaft 61, which is engaged with the lid 82, is pushed and moves toward the rear. As the operating shaft 61 moves toward the rear, the movable fixed plate 52 moves toward the rear, and the fixed fixed plate 51 and the movable fixed plate 52 separate from each other. This allows the wire 2 to move. By pulling the wire 2 while pressing the lid 82, the operator can wind or unwind the wire 2, thereby changing the height of the object T attached to the end of the wire 2. When the hand holding the lid portion 82 is released, the biasing member 7, which is a coil spring, returns to its original position. As the biasing member 7 returns to its original position, the movable fixed plate 52 moves so as to come into contact with the immovable fixed plate 51, and the wire 2 stops when the hand is released from the lid portion 82.

[0026] This embodiment provides the following advantages. The lifting device 1 includes a pulley 3, a wire 2 wound around the pulley 3, a pair of fixed plates 5 that can sandwich and secure the wire 2, a biasing member 7 that is positioned in a state where a biasing force is generated to bring the pair of fixed plates 5 closer to each other and secure the wire 2, and an operation unit 6 that, when operated by an operator, presses the biasing member 7 against the biasing force to move the pair of fixed plates 5 apart and release the wire 2. By simply pressing the operation unit 6 and pulling the wire 2, the operator can move the wire 2 wound around the pulley 3 from a state in which the pair of fixed plates 5 secure the wire 2, separating the pair of fixed plates 5 and releasing the wire 2 from its fixed state, thereby moving the wire 2. This eliminates the need to adjust the length of each wire 2 or lift the object T. This eliminates the need to change the position of the object T suspended from the wire 2 with a simple operation.

[0027] According to this embodiment, the lifting device 1 further includes an operating shaft 61 that penetrates the pair of fixed plates 5, to which one of the pair of fixed plates 5, the movable fixed plate 52, is fixed, and which is movable in the axial direction relative to the other, immovable fixed plate 51, and the biasing member 7 is disposed on the immovable fixed plate 51 side of the operating shaft 61. By including the operating shaft 61 that penetrates the pair of fixed plates 5 and is capable of moving the fixed plate 5 in the axial direction, the pair of fixed plates 5 can be moved by moving the operating shaft 61, thereby fixing and releasing the wire 2. This allows the position of the article T suspended from the wire 2 to be changed with a simple operation. By moving the operating shaft 61 from the front to the depth direction, the area of ​​the lifting device 1 can be reduced, making it easier to install.

[0028] According to this embodiment, the lifting device 1 further includes a case 81 that houses the pulley 3, the wire 2, the fixed plate 5, and the biasing member 7 and from which the wire 2 hangs down through the wire opening 813, and a lid 82 that covers the case 81 constitutes the operating unit 6. By pressing the lid 82, the operating shaft 61 is moved and the wire 2 can be released from the fixed position of the pair of fixed plates 5. This makes it possible to change the position of the article T suspended from the wire 2 with a simple operation. Furthermore, because the components of the lifting device 1 are housed within the case 81 and covered with the lid 82, the lifting device 1 has a neat appearance and can be designed with a good design, and it easily blends in with the interior of a room even when hung on a wall surface 200, etc.

[0029] The present disclosure is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope of achieving the object of the present disclosure are included in the present disclosure. As shown in FIG. 4, a lifting device 1A according to another embodiment may be suspended from an energized suspension rail 9 serving as a rail unit. In FIG. 5, only the energized suspension rail 9 is shown in cross section. As shown in FIG. 5, the lifting device 1A has a suspender 83 that can engage with the energized suspension rail 9. The suspender 83 has an engagement shaft 831 and an engagement shaft head 832. The engagement shaft 831 is a substantially cylindrical member that protrudes upward from the upper end of the case 81A of the cover 8A. The engagement shaft 831 may be attached to the retaining plate 41 inside the case 81A and positioned so as to protrude from an opening provided in the case 81A. The engagement shaft head 832 is a substantially cylindrical member with a larger diameter than the engagement shaft 831 and engages with a groove 911 in the energized suspension rail 9 (described later).

[0030] 5, the energized suspension rail 9 is placed like a nageshi (rail support) on a wall surface 200 inside a room and used. The energized suspension rail 9 has an electric wire 922 arranged thereon and includes a rail body 91 and a rail outlet 92.

[0031] The rail main body 91 is a long member that is provided on the upper part of the wall surface 200 and extends in a substantially horizontal direction. The back surface 91b of the rail main body 91 abuts against the wall surface 200, and the front surface 91a faces the interior of the room. The rail main body 91 has a base portion 910, a groove portion 911, and a hook portion 912.

[0032] The base portion 910 is a rectangular member in a front view extending along the extension direction, and is made of, for example, resin. The groove portion 911 is a recessed portion into which the suspender 83 engages so as to be movable along the extension direction of the rail main body 91. The groove portion 911 is disposed on the underside 91c of the rail main body 91 and is formed as a recessed portion recessed upward. The groove portion 911 is formed by disposing a rail-shaped part made of a material with higher rigidity than the base portion 910, such as metal. The groove portion 911 has a bottom surface 911a, a pair of side wall portions 911b, and an engaging protrusion 911c. The bottom surface 911a is located at the top when attached and is a surface extending along the rail main body 91. The pair of side wall portions 911b extend downward from both ends of the bottom surface 911a. The engaging protrusions 911c protrude from the lower ends of the pair of side wall portions 911b in directions toward each other. Engagement protrusion 911c protrudes so as to partially block groove 911. Engagement protrusion 911c supports engagement shaft head 832 of suspender 83 placed in groove 911 so as not to fall downward, and suspender 83 engages with groove 911 so as to be able to move within groove 911.

[0033] The hook portion 912 is disposed on the upper surface 91d of the rail main body 91. The hook portion 912 is formed by recessing the wall surface 200 side between the wall surface 200 and the surface 91a of the rail main body 91 downward, and by the upper end of the surface 91a side protruding upward. This makes it possible to hang articles such as hook-shaped metal fittings or hangers.

[0034] The rail outlet 92 is provided in the vertical center of the surface 91a of the rail body 91 and extends along the extension direction of the rail body 91. The rail outlet 92 is configured by arranging a metal electric wire 922 on a long base material 921. The base material 921 can accommodate the electric wire 922 therein and is formed with an opening that allows access to the electric wire 922 from the outside. The rail outlet 92 supplies power to a product connected to a separate plug (not shown) by inserting the plug. The rail outlet 92 itself is connected to a power source (not shown) in the room and receives power from the power source. Because the hoisting fixture 83 engages with the groove 911 of the energized suspension rail 9, the lifting device 1A can be moved to a desired position on the wall surface 200 and used, and can receive power at the desired position. By connecting to the energized suspension rail 9, it is possible to supply power to electronic devices used with items suspended by the lifting device 1A, or to hang a light and use it as a movable light.

[0035] The method of installing the energized suspension rail 9 will now be described. First, the base 910 is fixed to the wall surface 200 with screws or the like. At this time, the rail outlet 92 has not yet been placed on the base 910. A recess 914 in which the rail outlet 92 is to be placed is exposed in the vertical center of the base 910. A screw is placed in this recess 914. Next, the rail outlet 92 is placed so that it fits into the recess 914. This causes the screws to be concealed by the rail outlet 92.

[0036] 6, the hook portion 912B of the energized suspension rail 9B may be configured by disposing a rail member 913 that is roughly U-shaped and has an open top on the top of the rail main body 91. If the rail member 913 is made of, for example, metal, the durability of the hook portion 912B can be increased even if the base portion 910 is made of, for example, resin.

[0037] As shown in Figure 7, the energized suspension rail 9C may be configured as a single member with the base 910C, with the hook portion 912C and groove portion 911C formed in a roughly U-shaped configuration with one end open. The material from which the rail main body 91C is configured is not particularly limited. By aligning the indoor-side surfaces of the groove portion 911C and hook portion 912C with the indoor-side surface of the rail outlet 92, the overall thickness of the energized suspension rail 9C can be reduced. Therefore, compared to the energized suspension rails 9A and 9B illustrated in Figures 5 and 6, the energized suspension rail 9C can be configured to be more compact and less noticeable.

[0038] The energized suspension rail 9 has been described as an example of a rail used like a nageshi (rail support). However, there are no particular limitations on the dimensions or shape of the energized suspension rail 9. It is also possible to arrange an energized suspension rail that can be used like a shelf by increasing the dimensions in the vertical or depth direction.

[0039] In the above embodiment, the metal wire 2 is described as an example, but it may be a string such as a rope. The wire 2 may not be made of twisted thin wire, but may be a single metal wire. [Explanation of symbols]

[0040] REFERENCE SIGNS LIST 1 lifting device, 2 wire, 3 pulley, 5 fixed plate, 6 operating section, 7 biasing member, 9 energized suspension rail (rail section), 81 case, 61 operating shaft section (shaft section), 82 cover section, 922 electric wire

Claims

1. A pulley and A wire or string wound around the pulley; a pair of fixing plates that can be fixed by sandwiching the wire or string therebetween; a biasing member that is disposed in a state in which a biasing force is generated to bring the pair of fixing plates closer to each other and fix the wire or string; an operating unit that, when operated by an operator, presses the biasing member against the biasing force to separate the pair of fixing plates and release the fixation of the wire or string; a case that houses the pulley, the wire or string, the fixing plate, and the biasing member therein, and from which the wire or string hangs down through an opening, A lid portion that covers the case constitutes the operation portion.

2. a shaft portion that penetrates the pair of fixed plates, to which one of the pair of fixed plates is fixed and which is movable in the axial direction relative to the other fixed plate; The lifting device according to claim 1 , wherein the biasing member is disposed on the other fixed plate side of the shaft portion.

3. The lifting device according to claim 1 or 2, wherein the lifting device is movably engaged with a rail portion that is provided on a wall surface of a room and extends in a substantially horizontal direction.

4. A rail portion configured by an electrically conductive rail provided on a wall surface of a room, extending in a substantially horizontal direction, and having an electric wire arranged thereon; The lifting device according to claim 1 or 2, the lifting device is movably engaged with the rail portion, An indoor wall lifting device capable of supplying power to an article that is attached so as to be able to be raised and lowered by the lifting device.

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