JPH03223545A - Belt connector - Google Patents

Abstract

PURPOSE:To simplify the constitution of an elevator door opening/closing device by providing a fastening member for fastening first and second coupling members adjustably in the longitudinal direction of a belt so as to hold the tension of the belt. CONSTITUTION:When both ends of a toothed belt 12 for wrapping toothed pulleys 10, 11 on both ends of the hanger case 2 of an elevator door opening/ closing device are connected to each other by a belt connector 20, one end of the toothed belt 12 is first pinched by a pair of upper and lower fastening plates 21A, 21B of a first coupling member 21 and both plates 21A, 21B are coupled with each other by plural pairs of bolts and nuts 21C. On the other hand, the other end of the toothed belt 12 is pinched by a pair of upper and lower fastening plates 22A, 22B of a second coupling member 22 and the plates 22A, 22B are coupled with each other by plural pairs of bolts and nuts 22C. Both first and second coupling members 21, 22 are drawn to each other, under such a condition and nuts 23C, 23D of a fastening member 23 are turned by a spanning to fixedly fasten a screw rod 23A to a carrier plate 23B.

Description

Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to a belt connection such as a toothed belt that transmits the rotational force of a motor of an elevator door opening/closing device to a door to open and close the door. Regarding ingredients.

(Prior Art) A conventional elevator door opening/closing device is shown in FIGS. 4 and 5. In the figure, reference numeral 1 denotes a frame 1 provided on the front side of a car (not shown).A hanger case 2 is attached to the upper part of the frame 1, and a hanger rail 3 is provided horizontally on the frame 1. Reference numeral 4 denotes an entrance/exit door of the car, and a pair of left and right door hangers 5 are protruded from the upper end of the door panel of the door 4. Hanger rollers 5a provided on both door hangers 5 are removably hooked to the hanger rail 3, thereby suspending the door 4 so that it can be opened and closed left and right.

As a door driving device for opening and closing this door 4, a motor 6 with a speed reducer is installed at the upper part of one end of the hanger case 2, and a drive belt 8 is connected to a drive pulley 7 provided on the output shaft.
The interlocking pulley 9 that interlocks with the hanger case 2 through
A toothed pulley 10 is provided coaxially with one end, and a toothed pulley 11 is also provided at the other end of the hanger case 2, and the toothed pulley 11 is wound around both toothed pulleys 10 and 11. A belt 12 is provided. Both ends of the toothed belt 12 are connected to each other by a connector 13 to form an endless (annular) shape, and tension is applied by a tension wheel 14a of a tension adjustment tensioner 14 to maintain the tensioned state. The left and right door hangers 5 at the top of the door 4 are fastened to this toothed belt 12 via fastening M15.

With this, the toothed belt 12 is rotated back and forth by the forward and reverse rotation of the motor 6, and the door 4 is moved to open and close so as to follow it.

As shown in FIG. 5, the connector 13 includes a pair of upper and lower plate-shaped fastening members 12a and 12b that sandwich both ends of the toothed belt 12, and a plurality of pairs of bolts that fasten these members.
It is equipped with a nut 12c.

The lower fastening member 12b has teeth that mesh with the toothed belt 12.

The tensioner 14 for tension adjustment has a tension wheel 14a rotatably attached to a base 14b, and the base 14b is adjusted vertically with respect to the hanger case 2 with a plurality of bolts 14c through an elongated hole. By attaching the belt to the toothed belt 12, the tension wheel 14a applies tension to the toothed belt 12 to keep it in tension.

(Problems to be Solved by the Invention) In the elevator door opening/closing device, the connector 13 of the toothed belt 12 that transmits the rotational force of the motor 6 to the door 4 simply connects both ends of the belt 12 to each other. In addition, it is necessary to separately install a tensioner 14 for tension adjustment to apply tension to the belt 12 and keep it in a tensioned state, which increases the number of parts and complicates the configuration, increasing costs. invite Also, tensioner 14 tensioner 1
Since the tension of the toothed belt 12 is adjusted by vertically moving the toothed belt 4a together with the base 14b through elongated holes using a plurality of bolts 14c, the work is troublesome and delicate tension adjustment is difficult.

The present invention was developed in view of the above circumstances, and it is possible to connect both ends of a belt to each other, and at the same time, the tension of the belt can be easily and reliably adjusted without the need for a separate tension adjustment tensioner, and is used in elevator door opening/closing devices, etc. It is an object of the present invention to provide a belt connector that is effective in simplifying the configuration.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the belt connector of the present invention has a first coupling member coupled to one end of the belt, and a second coupling member coupled to the other end of the belt. The belt is configured to include a member and a fastening member that adjustably fastens the first and second coupling members to each other in the longitudinal direction of the belt to maintain a tensioned state of the belt.

(Function) With the belt connector having the above configuration, the first coupling member is coupled to one end of the belt, the second coupling member is coupled to the other end of the belt, and both the first and second coupling members are coupled to one end of the belt. By fastening the joining members together with a fastening member, the belts can be connected, and at the same time, the degree of tightening of the first and second joining members in the belt longitudinal direction by the fastening member can be adjusted separately. The belt can be easily and reliably maintained in a tensioned state without providing a tensioner or the like for tension adjustment.

(Implementation Project) An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Components in the figure that overlap with those shown in FIGS. 4 and 5 are given the same reference numerals to simplify the explanation. In addition, an example will be shown in which the present invention is applied as a connector for a toothed belt 12 that transmits the rotational force of a motor 6 in an elevator door opening/closing device to a door 4 to open and close the door 4.

First, FIG. 2 shows an elevator door opening/closing device similar to that described above. As shown in FIG. 2, a toothed belt 12 is wound around toothed pulleys 10 and 11 provided at both ends of the hanger case 2, and both ends of the toothed belt 12 are connected to each other by a belt connector 20 of the present invention. It has an endless shape (ring shape). As described later, this belt connector 20 connects both ends of the belt 12 to each other, and at the same time, the degree of tightening in the longitudinal direction of the belt can be adjusted, thereby eliminating the need for a conventional tensioner for tension adjustment.

Here, the belt connector 20 includes a first connecting member 21 that connects to one end of the toothed belt 12, as shown in FIG.
and a second coupling member 22 coupled to the other end of the belt 12, and both the first and second coupling members 21 and 22 are fastened to each other so that the tightening can be adjusted in the longitudinal direction of the belt. This configuration includes a fastening member 23 that maintains a tensioned state.

The first coupling member 21 includes a pair of upper and lower fastening plates 21A and 21B that sandwich the ends of the belt 12, and a plurality of pairs of bolts and nuts 21C that fasten these together. The upper and lower fastening plates 21A and 21B each have a rectangular shape as shown in FIG. 3, and have bolt insertion holes 21a and 21b near the four corners.

Further, the lower fastening plate 21B has a plurality of ! 2 l b'.

The second coupling member 22 is also connected to the first coupling member 21.
Similarly, it consists of a pair of upper and lower fastening plates 22a and 22b that sandwich the ends of the belt 12, and a plurality of pairs of bolts and nuts 22c that fasten these together. nThe upper and lower fastening plates 22
As shown in FIG. 3, A and 22B each have a rectangular shape and have bolt insertion holes 22a and 22b near the four corners.

The lower fastening plate 22B has a plurality of teeth 22b' on its upper surface that mesh with the teeth of the belt 12.

The fastening member 23 that fastens the first and second coupling members 21 and 22 to each other extends integrally from the end of the fastening plate 21B on the lower side of the first coupling member 21 or is fixed by welding or the like. The protruding screw rod 23A and the second coupling member 22
A substantially U-shaped receiving plate 23B integrally extending from the lower fastening plate 22B and the threaded rod 23A inserted through the receiving plate 23b' of the rising plate portion 23b at the tip of this receiving plate 23B are adjustable. The attachment consists of a double nut 23C123D for fixing.

Therefore, in order to connect both ends of the toothed belt 12 wound around the toothed pulleys 10 and 11 at both ends of the non-ringer case 2 of the elevator door opening/closing device with the belt connector 20 of the present invention, first, One end of the toothed belt 12 is sandwiched between a pair of upper and lower fastening plates 21A and 21B of the first coupling member 21, and coupled with a plurality of pairs of bolts and nuts 21C. On the other hand, the other end of the toothed belt 12 is sandwiched between a pair of upper and lower fastening plates 22A and 22B of the second coupling member 22, and is coupled with a plurality of pairs of bolts and nuts 22C. In this state, both the first and second coupling members 21 and 22 are drawn together and fastened by the fastening member 23.

In other words, the nut 23C is screwed onto the screw rod 23A protruding from the end of the lower fastening plate 21B of the first connecting member 21, and then the screw rod 23A is connected to the lower fastening plate 22B of the second connecting member 22. The tip of the substantially U-shaped receiving plate 23B integrally extended from the receiving plate 23B is inserted into the receiver 23b' of the rising plate portion 23b, and the nut 23D is screwed onto the tip thereof. In this state, the nuts 23C and 23D are turned with a spanner to tighten and fix the screw rod 23A to the receiving plate 23B. Now both the first and second connecting members 21°22
Mutual fastening is possible, and the toothed belt 12 is connected in an endless (annular) manner. At the same time, the tension of the toothed belt 12 can be easily and reliably adjusted by adjusting the degree of mutual tightening of the first and second coupling members 21, 22 in the belt longitudinal direction by tightening the nuts 23C and 23D. Moreover, even delicate adjustments can be easily made, and the belt 12 can be maintained in a tensioned state without the need for a separate tensioner or the like. Further, the elongation of the toothed belt 12 also causes the fastening member 23 to
Threaded rod 23A and nuts 23C, 2 to the receiving plate 23B of
3D tightening allows easy and reliable correction, and the belt 1
2. Maintains a state of tension.

In the above embodiment, the belt connector of the present invention is applied to connect the toothed belt 12 of an elevator door opening/closing device, but the belt connector of the present invention is not limited to this, and may be used to connect belts for other purposes. It is nJ.

〔Effect of the invention〕

Since the belt connector of the present invention is configured as described above, it is possible to connect both ends of the belt, and at the same time, the tension of the belt can be easily and reliably adjusted without the need for a separate tension adjustment tensioner, and the elevator door opening/closing device Six effects can be obtained by simplifying the configuration.

[Brief explanation of drawings]

Fig. 2 is a schematic diagram of an elevator door opening/closing device using the belt, Fig. 3 is an exploded perspective view of the belt connector, and Fig. 4 shows a conventional example of elevator door opening/closing. FIG. 5 is a schematic diagram of the apparatus, and is a side view showing the belt connection state and tension state of the conventional example. 12...Belt, 20...Belt connector, 21...
- First coupling member, 22... Second coupling member, 23...
Fastening member.

Claims (1)

[Claims] A belt connector that connects both ends of a belt includes a first connecting member that connects to one end of the belt, a second connecting member that connects to the other end of the belt, and a first and a second connecting member that connects the two ends of the belt.
A belt connector comprising: a fastening member that adjustably tightens both coupling members in the longitudinal direction of the belt to maintain a tensioned state of the belt.