JPH0241254Y2 - - Google Patents

Description

[Detailed description of the invention] This invention forms a hook part at the tip of a hook member pivotably attached to a fixed part, and swings the hook member via a transmission shaft using a rotating means. The present invention relates to a hook-type connecting device including a hook receiving portion on which the hook portion is releasably hung.

Conventionally, the first hook-type connection device of this type was
There is one shown in the figure. This hook device 1 is
A transmission member 3 is rotatably supported on the fixed part 2, and a hook member 4 is fixed to the transmission member 3. A hook portion 5 is formed at the tip of this hook member 4. A rotating means 6 is fixed to the end of the transmission shaft 3. By holding this rotating means 6 by hand and swinging the hook member 4 via the transmission shaft 3, the hook portion 5 is hooked onto and removed from the hook receiving portion 7.

However, in such a conventional hook type connecting device 1, the position of the hook member 4 and the hook receiving part 7 are not adjusted at the time of installation.
It is necessary to fine-tune the position of the holder, and the installation process tends to be time-consuming. In addition, due to thermal expansion of the mounting members to which the coupling device 1 is attached, such as doors and door surrounding frames, and changes in mounting dimensions over time, the coupling state may become loose, and vibrations received from the surroundings may cause the coupling state to become loose. There were disadvantages such as instability and the hook portion 5 coming off from the hook receiving portion 7.

In view of the above, this design eliminates the need for fine adjustment of the mounting dimensions during installation, and also avoids the possibility of loosening, instability, or disconnection of the connection due to thermal expansion of the mounting part heat or changes in dimensions over time. The object of the present invention is to provide a hook-type connecting device that does not require a hook type connection device.

Hereinafter, this invention will be explained in detail through illustrated embodiments.

FIG. 2 is a plan view of an embodiment of this invention, and FIG. 3 is an exploded perspective view thereof.

This hook type coupling device 10 rotatably supports a transmission shaft 12 on a fixed part 11. This transmission shaft 12
has an eccentric inner circumferential surface 13 centered on an eccentric axis Oe parallel to the rotation axis O thereof. Hook members 14, 14 are rotatably supported on the transmission shaft 12 about their eccentric axis Oe. Hook parts 15, 15 are formed at the tips of the hook members 14, 14. A rotation means 16 is fixed to the end of the transmission shaft 12, and by holding this rotation means 16 by hand and swinging the hook members 14, 14 through the transmission shaft 12, the hook portions 15, 15 are rotated. can be hung on and removed from the hook receiving part 17.

A protrusion 18 is formed on the eccentric direction side portion of the eccentric circumferential surface 13, and hook portions 15, 15 of this protrusion 18 are formed.
The engaging portion 19 is formed on the surface in the disengagement direction when the hook is removed from the hook receiving portion 17, that is, the surface facing upward in FIGS. 1 and 2. On the other hand, the rotation axis of the hook members 14, 14, that is, the eccentric axis
A lever 20 is swingably supported at a portion closer to the tip than Oe. The engaged portion 21 receives the engaging portion 19 when the transmission shaft 12 is rotated in the disengagement direction and the eccentric axis Oe is located on the hook portions 15, 15 side of the rotational axis O. is provided at the free end portion 22 of the lever 20 on the transmission shaft 12 side. The above-mentioned engaging part 1
A contact portion 23 is connected to the lever 20 and is received by a portion of the eccentric circumferential surface 13 closer to the engagement portion than the engagement portion 19 when the engagement portion 9 is received by the engaged portion 21 .

Further, the transmission shaft 12 is biased by a torsion coil spring that biases the transmission shaft 12 in the engagement direction toward a hooked position where the eccentric shaft center Oe is located on the opposite side of the hook portions 15, 15 with the rotation shaft center O sandwiched therebetween. A spring 24 is mounted across the fixed portion 11 and the transmission shaft 12.

Further, with the transmission shaft 12 slightly swung in the engagement direction from the maximum engagement force position where the hook portions 15, 15, the rotational axis O, and the eccentric axis Oe are aligned in a straight line, the lever 20 is moved. A lock portion 25 is provided on the eccentric circumferential surface 13 to be received by a receiving portion 29 formed in the lock portion 25 .

Note that 26 is a pivot pin of the lever 20, 27 is a connecting means for the hook member 14, and 28 is a spacer ring.

Next, the operation of the hook-type connecting device 10 constructed in this way will be explained in detail based on FIGS. 4a to 4d.

FIG. 4a shows a state in which the hooks 15, 15 are received on the upper surface of the hook receiver 17, but are not engaged with each other. In this state, the eccentric axis Oe of the transmission shaft 12 and the hook portions 15, 15 are located on the same side of the rotational axis O, and the hook members 14, 14 are pushed out toward the hook receiving portion 17 side. In addition, the engaging portion 19
is received by the engaged portion 21.

From the state shown in FIG. 4a, the transmission shaft 12 moves in the disengagement direction (clockwise in the figure) against the spring 24.
When the contact part 2 is rotated, as shown in Fig. 4b,
3 is received on the engagement side of the engagement portion 19 of the eccentric inner circumferential surface 13, and the lever 20 is prevented from rotating together with the transmission shaft 12 which is rotated in the disengagement direction. As a result, the transmission shaft 12, the lever 2
0 and the hook members 14, 14 are swung in the disengagement direction as if they were one body.

Furthermore, when the transmission shaft 12 is rotated in the engagement direction from the state shown in FIG. It moves toward the side opposite to the hooks 15, 15 with the two hooks in between. As a result, the hook parts 15, 15 and the hook receiving part 1
7 are reliably engaged. Further, this engaged state is maintained by the biasing force of the spring 24. Fourth
When the transmission shaft 12 is further rotated in the engagement direction from the state shown in Figure c, the hook portions 15, 15, the rotational axis O, and the eccentric axis Oe are sequentially aligned in a straight line, as shown in Figure 4d. Transmission shaft 1 from the line-up maximum engagement force position
2 is slightly swung in the engagement direction, the lock portion 25 is received by the receiving portion 29.

In this state, the engagement force between the hook portions 15, 15 and the hook receiving portion 17 is close to the maximum value, but is smaller than that. However, when the hook receiving portion 17 attempts to separate from the transmission shaft 12, a force is applied to the transmission shaft 12 to rotate it in the engagement direction.
It will not be released unless the transmission shaft 12 is swung in the disengagement direction beyond the maximum engagement force position using the .

FIG. 5 is a front view of the main parts of another embodiment of this invention. In FIG. 4, parts corresponding to those in FIGS. 1 and 2 are given the same reference numerals.

This hook-type coupling device 10 is constructed essentially the same as the embodiment described above, and operates in the same manner.

In each of the embodiments described above, the rotating means 16 is constituted by a handle, but instead of this, a remote control device having a gear train, a chain transmission, etc. may be used.

As explained above, this invention is achieved by forming a hook at the tip of a hook member that is swingably supported on a fixed part, and swinging the hook member via a transmission shaft using a rotating means. In a hook-type coupling device including a hook receiving portion on which the hook portion is releasably hooked, the rear end portion of the hook member is attached to the transmission shaft so as to be rotatable around an eccentric axis parallel to the rotation axis of the transmission shaft. The lever is pivotally supported and connected to the hook member via a pivot pin parallel to the transmission shaft, the eccentric axis is located on the hook side of the rotation axis, and the tip of the lever is The hook member is received by the hook receiving portion in a received state in which the hook member is in contact with the hook receiving portion, and the transmission shaft is rotated in the engagement direction from the above-mentioned received state, whereby the transmission shaft and the rear end of the lever are Since the structure is such that the hook part is pulled toward the rotation axis and engaged with the hook receiving part, there is no need to make fine adjustments to the mounting method during installation. There are no problems such as loosening, instability, or disconnection of the connection due to thermal expansion or dimensional changes over time.

Further, an engaging portion is provided on the transmission shaft to receive an engaged portion provided at the rear end of the lever when the transmission shaft is rotated from the received state in the disengagement direction, A spring that urges the shaft to rotate from the received state in the engaging direction is interposed between the transmission shaft and the fixed part, so that the engagement between the hook part and the hook receiving part is loosened. From the received state, the hook member is rotated in the disengagement direction in conjunction with the transmission shaft, and the disengagement operation can be performed easily.

If a spring is provided that biases the transmission shaft in the engaging direction from the above-mentioned received state, the hook part and the hook receiving part can be automatically engaged from the received state, and a predetermined urging force can be applied. This allows the engaged state to be maintained, and the engagement between the hook portion and the hook receiving portion to be more reliably stabilized. Also, when the transmission shaft is slightly swung in the engagement direction from the maximum engagement force position where the hook, rotation axis, and eccentric axis are aligned in a straight line, the transmission shaft is received by the receiving part of the hook member. When the lock part is provided on the transmission shaft and the hook part tries to separate from the transmission shaft, a force is applied to the transmission shaft that rotates it in the anti-release rocking direction, and the rotation means is used to rotate the transmission shaft to the maximum. If the lock is not released unless the hook is swung in the release swiveling direction beyond the engagement force position, the engagement force between the hook and the hook receiver must be strong, and heavy objects must be It can be extremely usefully applied to connections between objects.

[Brief explanation of the drawing]

Fig. 1 is a front view of a conventional example, Fig. 2 is a plan view of an embodiment of this invention, Fig. 3 is an exploded perspective view thereof, and Figs. 4a to 4d are for explaining the operation thereof. FIG. 5 is a front view of the main parts of another embodiment of this invention. DESCRIPTION OF SYMBOLS 11... Fixed part, 12... Transmission shaft, 14... Hook member, 15... Hook part, 16... Rotating means, 1
7...Hook receiving part, 19...Engaging part, 21...Engaged part, 23...Abutting part, 24...Spring, 25...Lock part, 29...Receiving part.

Claims (1)

[Claims for Utility Model Registration] 1. A hook member is movably pivotally attached to a fixed part via a transmission shaft, and the hook member is swung by a rotating means via the transmission shaft, whereby the tip of the hook member is In a hook type coupling device in which a hook portion formed in a shape is hooked on and removed from a hook receiving portion, a rear end portion of the hook member is attached to the transmission shaft so as to be rotatable around an eccentric axis parallel to the rotation axis of the transmission shaft. The lever is pivotally supported and connected to the hook member via a pivot pin parallel to the transmission shaft, the eccentric axis is located on the hook side of the rotation axis, and the tip of the lever is The hook member is received by the hook receiving part in a received state in which the hook member is in contact with the hook receiving part, and the transmission shaft is rotated in the engagement direction from the above-mentioned received state, whereby the transmission shaft and the rear end of the lever are connected. When the transmission shaft is rotated from the received state to the disengagement direction, The transmission shaft is provided with an engaging portion that receives the engaged portion provided at the rear end of the lever, and a spring that urges the transmission shaft to rotate from the received state in the engaging direction is attached to the transmission shaft. and the fixing part. 2. In the hook-type coupling device described in claim 1 of the utility model registration claim, the transmission shaft is moved slightly in the engagement direction from the maximum engagement force position where the hook portion, rotational axis, and eccentric axis are aligned in sequence. A hook type coupling device, wherein a lock portion is provided on the eccentric circumferential surface of the transmission shaft, and the lock portion is received by a receiving portion provided on the hook member in a state of being swung.