JPH025452Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hoisting device used in an elevating device used for elevating and lowering lighting equipment relative to a ceiling.

In the conventional lifting device, as shown in FIG. 1, a mechanical locking mechanism 4 which also serves as a guide is attached to each hanging wire 2.

That is, in this conventional example, both ends of one wire 2 are wound around a drum 10 in a fixed part 1 by the force of a motor 11, and the middle part of this wire 2 is wound around a pulley 12 in an elevating part 3. By hanging, the lifting section 3
is suspended by two wires 2, and here the mechanical lock mechanism 4 is connected to the lock 1.
Guide rod 1 having a guide tube 14 with 3 attachments and an engaging portion 15
6, the guide tube 14 is suspended and fixed on the fixed part 1 side, and the guide rod 16 is erected on the elevating part 3 side, and the wire 2 is inserted through the guide tube 14 and the guide rod 16, so that the guide tube 14 When the guide rod 16 is inserted into the guide rod 16, the elevating section 3 is guided and locked into a home position.

However, in such a conventional example, since a mechanical locking mechanism 4 is provided corresponding to each hanging wire 2, there is a problem that the number of parts is large and the cost of the device is high. 14 and guide rod 1
6 will not fit well if the spacing between them is not accurate, so there is a problem in that the installation process of the guide tube 14 and the guide rod 16 requires a lot of work. Guide tube 14 and guide rod 1
There was a problem that the fitting with 6 could not be done well.

The present invention has been proposed in view of the above-mentioned problems, and by arranging a mechanical locking mechanism that also serves as a guide at the center position between two parallel wires, the number of required parts is reduced and the cost is reduced. At the same time, it is possible to make the attachment accuracy of each part constituting this mechanical lock mechanism to the fixing part and the lifting part relatively rough, and also to make it possible to make the part to be hoisted a little more or less when raising the part to be hoisted. It is possible to reliably fit and connect to the fixed part even when there is an inclination of the body, and also to correct the posture of the part to be hoisted with the means for correcting the posture, so that the part to be hoisted can be connected to the fixed part in a normal posture. It is an object of the present invention to provide a winding device that can connect parts.

The present invention will be explained below with reference to examples.

FIG. 2 shows an embodiment of the present invention used in an elevating device, in which one end of the wire 2 is fixed within the fixed part 1, and the elevating part constituting the part to be hoisted. Wire 2 via pulley 12 in 3
The other end is wound around a drum 18, which is also provided in the fixed part 1, via a pulley 17 in the fixed part 1, thereby bringing the distance between the elevating part 3 and the fixed part 1 closer, and vice versa. By driving the drum 18 in the temporary winding direction, the elevating section 3 is configured to descend while being supported by the hanging portions of the parallel wires 2.
In this embodiment, however, the mechanical locking mechanism 4 installed centrally between the hanging parts of the parallel wires 2 suspending the lifting part 3 has a pair of guide insertion means arranged opposite each other with a narrow gap. Constituent guide plate 1
9 is fixed at the center of the fixed part 1, and a locking plate 20, which constitutes a locking protrusion means inserted between these guide plates 19, is erected at the center of the elevating part 3, When the locking plate 20 is inserted into the guide plate 19, the lifting portion 3 can be locked in a fixed position by locking the locking plate 22 to the locking pin 21 inserted through the locking plate 20. It is designed so that Further, the lower ends of the pair of guide plates 19 are bent obliquely in a direction that increases the distance between them, so that the locking plate 20 can be properly inserted between the guide plates 19.

Here, when the elevating section 3 is lowered, the locking pin 21 becomes unlatched from the lock plate 22, but the way to remove it is to raise the elevating section 3 a little higher according to the method seen in Utility Model Application No. 56-84213. and locking pin 21
Accordingly, the lower part of the lock plate 22 can be pushed to the side as shown by the two-dot chain line to release the locked state, and then the lock plate 22 can be moved down. Here, the lock plate 22 is a bolt 3 with a coil spring 30 interposed at one end.
1, and when the lower part is pushed sideways by the locking pin 21 as described above, it rotates around the insertion part of the bolt 31 against the pressure of the coil spring 30, and the locking pin 21 rotates around the insertion part of the bolt 31 as described above. This is to remove the suspension.

Reference numeral 23 indicates contacts for supplying electricity from the fixed part 1 to the lifting part 3. These contacts 23 are fixedly installed on contact bases 24 provided on both sides of the mechanical locking mechanism 4, and the contact bases 24 are connected to the contact bases 24. Spring 25 for obtaining pressure
The upper surface of the elevating section 3 is urged upward by the upper surface of the elevating section 3.

By the way, in the case of the elevating device having the above-mentioned structure, when the elevating portion 3 rises, if the elevating portion 3 rises in a tilted state, the above-mentioned contact point 2
Not only is the electrical contact between parts 3 and 3 not good, but also the guide plate 19 that constitutes the mechanical locking mechanism 4
A problem arises in that the fitting and locking of the locking plate 20 and the locking plate 20 is not performed well. Thus, in the embodiment shown in FIG.
A biasing device 5 using a compression spring 26 is installed at the hanging portion of each wire 2 as a means for applying a downward force to the wire. That is, in this embodiment, the biasing device 5
A large diameter pipe 6 having a plunger 7 inside which is biased downward by a compression spring 26 is fixed to the fixed part 1 in a hanging manner, and a small diameter pipe 6 having an outer diameter slightly smaller than the inner diameter of the large diameter pipe 6 is installed. A pipe 9 is installed upright in the lifting section 3, and the wire 2 is inserted through the large-diameter pipe 6, the center hole 8 of the plunger 7, and the small-diameter pipe 9, respectively. Therefore, in this embodiment, when the lifting part 3 approaches the fixed part 1 that has been raised, the upper end of the small diameter pipe 9 is first inserted into the large diameter pipe 6 from its lower end, and then the lifting part 3 is inserted into the large diameter pipe 6 from its lower end. 3 rises, the small diameter pipe 9 pushes the plunger 7 upward against the spring force of the compression spring 26,
As a reaction force, a downward force acts on the upright portion of the small diameter pipe 9 of the elevating section 3. For this reason, if the elevating section 3 rises in a tilted state, the small diameter pipe 9 on the upper side will first push up the plunger 7, and the resulting downward force will be applied to the elevating section 3. This acts on the upright portion of the small diameter pipe 9, corrects the posture of the lifting section 3, that is, corrects it to a normal posture, and then the guide plate 19 and the locking plate 2 that constitute the mechanical locking mechanism 4 are removed.
The fitting and locking with 0 is performed well. FIG. 2a shows a fixedly connected state, and FIG. 2b shows a state in which the fixedly connected state is released.

FIG. 3 shows another embodiment of the biasing device 5. In the embodiment of FIG. 2, the plunger 7 was biased by a compression spring 26, but in this embodiment In some cases, the plunger 7 itself is formed as a weight, and the weight of the plunger 7 is used to obtain a downward acting force.

In other words, in this embodiment, before the upper end of the small-diameter pipe 9 is inserted into the large-diameter pipe 6, the plunger 7 of the biasing device 5 is lowered by gravity to the lower end of the large-diameter pipe 6, and the elevating section 3 is raised. In this case, the small diameter pipe 9 is inserted into the large diameter pipe 6 before the locking plate 20 is fitted into the guide plate 19, and a downward force due to the weight of the plunger 7 is applied to the upper end of the small diameter pipe 6. Before the guide plate 19 and the locking plate 20 are fitted and locked, the same posture correction as in the embodiment shown in FIG. 2 is performed.

FIGS. 4a to 4d show still another embodiment of the urging device 5 as a means for correcting the posture by applying a downward force to the elevating part 3.
A coil spring 27 is arranged so that these wires 2 are inserted, and as is clear from the figure, even when the elevating part 3 is tilted and raised, there is a gap between the elevating part 3 and the fixed part 1. coil spring 27
is compressed and applies a downward force to the elevating part 3, and after correcting the posture of the elevating part 3, the elevating part 3 is connected to the fixed part 1, and serves as a guide as a guide insertion means on the fixed part 1 side. The recess 28 and the guide protrusion 29 serving as a locking protrusion means on the elevating part 3 can be properly fitted and connected. In this embodiment, when descending, the guide protrusion 29 is removed from the guide recess 28 by the weight of the elevating part 3.

As described above, the present invention includes a guide insertion means for guiding and inserting the locking protrusion means which protrudes upward from the middle of the upper part of the part to be rolled up when the part to be rolled up is raised, at a central position between the hanging parts of the wire. In addition to being provided on the fixed part, the guide insertion means is provided with a mechanical fixing means for releasably fixing the locking protrusion means when the rolled-up part is raised, and the rolled-up part is fixed to the mechanical fixing means. Before the wire is rolled up, a biasing means is provided between the hoisted part and the fixing part to bias downwardly the hanging part of each hanging part of the wire in the hoisting part. Because it is installed near the hoisting section, even if the hoisting section rises slightly tilted, a downward force is applied to the hoisting section before the lifting section is connected and fixed to the mechanical locking mechanism. The posture can be corrected, and as a result, the mechanical locking mechanism and the lifting section are well connected, and the contacts provided to conduct electricity from the fixed part to the hoisted part are made to make good electrical contact. Furthermore, there is no need for high accuracy in the mounting accuracy of each member constituting the mechanical locking mechanism, and there is an advantage that manufacturing and assembly are facilitated.

[Brief explanation of the drawing]

Figure 1 is a schematic sectional view of a conventional example, Figures 2a and b are enlarged sectional views of one embodiment of the present invention, Figure 3 is an enlarged sectional view of another embodiment of the present invention, and Figures 4a-4. d is an explanatory view showing the state when the elevating part is connected to the fixed part in another embodiment of the present invention, in which 1 is the fixed part, 2 is the wire, 3 is the elevating part, 4 is the mechanical locking mechanism, and 5 is the In the downward biasing device, 6 is a large diameter pipe, 7 is a plunger, 8 is a central hole, and 9 is a small diameter pipe.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Both ends are arranged on the fixed part side, and the part to be rolled up is suspended by a wire hung from a pulley provided in the middle part on the part to be rolled up, and the part to be rolled up is suspended from the part to be rolled up. In a winding device that winds up the part to be rolled up by driving the wire so as to approach or separate the distance between the part and the fixed part, the locking part is protruded upward at an upper middle of the part to be rolled up. A guiding insertion means for guiding and inserting the protruding means when the elevating part is raised is provided in the fixed part at a central position between the drooping parts of the wire, and a locking protruding means is provided on the guiding insertion means for engaging the protruding part when the hoisted part is raised. Mechanical fixing means for releasably fixing is provided, and before the rolled-up part is fixed to the mechanical fixing means, each of the wires of the rolled-up part is interposed between the rolled-up part and the fixing part. A hoisting device characterized in that a biasing means for biasing the hanging portion of the hanging portion downward is installed near the hanging portion of each hanging portion of the wire. (2) A large-diameter pipe is arranged in a downwardly protruding manner at the wire outlet of the fixed part, and a plunger with a center hole is housed vertically in the large-diameter pipe, and the center hole of the large-diameter pipe and the plunger is housed vertically inside the large-diameter pipe. A small diameter pipe having an outer diameter slightly smaller than the inner diameter of the large diameter pipe is erected at the wire outlet of the wound portion, and the wire is suspended within the small diameter pipe. and biasing means for pushing the plunger upward against its weight by the upper end of the small-diameter pipe to urge the hoisted portion downward when the hoisted portion approaches the fixed portion. A winding device according to claim 1, characterized in that the winding device comprises: