JPS622794Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an opening/closing holding device for a lid, etc., which is particularly suitable for use in opening and closing a lid or a door of a rack of audio equipment.

In order to omit the handles of glass lids and door bodies so that they can be opened and closed freely, and to eliminate the trouble and design constraints when attaching handles, push-lugs are generally used. Opening/closing holding devices such as lids are widely used, especially in racks for audio equipment.

This type of device basically consists of a case body, an actuating rod that is inserted into the case body so as to be retractable, a magnet attached to the tip of the actuating rod, and an elastic force between the actuating rod and the case body. It consists of a spring provided and a push latch mechanism configured to lock the operating rod with the first push and release this lock with the next push.

However, among these mechanisms, those using locking pawls in the push-latching mechanism have the disadvantage of being complicated in structure and high in price. Therefore, we used a heart-shaped endless groove to roll small balls and pins into it.
A structure was developed in which they were slidably fitted and locked. However, although these small balls and pins can relatively effectively lock the operating rod when it retreats, the locking effect cannot be expected to be sufficient when the operating rod pops out with force upon the second press. , it was necessary to provide a complete wall at the tip of the case body. As a result, the case body is split into two in the axial direction, and when assembled, the operating rod is stored in one of the two halves while retaining its elasticity, and then the other is quickly covered. This assembly work was rather complicated, as it required a lot of effort to fix it.

The purpose of this invention is to provide an opening/closing holding device for a lid body, etc., which has a simple structure, is easy to assemble, and does not cause malfunction.

The invention will be explained in detail below based on the embodiment shown in the drawings. In Figs. 1 to 7, the case body 1 is a cylindrical body made of synthetic resin and has a storage hole 1h passing through it. A tongue portion 1b is provided on the outer peripheral surface of the front end portion 1a so as to be embedded in the plate 2. In addition, this front end portion 1a
A protruding pawl 1c is provided on the inner circumferential surface of the actuating rod 3 to prevent rotation of the operating rod 3 in the circumferential direction and to ensure accurate sliding in the axial direction. Near the center of the inner peripheral surface of the case body 1, a serrated guide wall 4 is formed in the circumferential direction, and long grooves 1g are dug from every other valley of the guide wall 4 to just before the front end 1a. At the same time, an insertion groove 1e for fitting the case bottom body 5 in a fixed position is dug in the rear end 1d of the inner circumferential surface, and after fitting, the case bottom body 5 is fixed to the case body 1. A hole 1f is made for this purpose. The case bottom body 5 is cylindrical, and its front end 5a is connected to the guide wall 4 of the case body 1.
A sawtooth-shaped guide wall 6 similar to that shown in FIG. A protruding portion 5c is provided, and a hole 5d that coincides with the hole 1f is bored. Further, the rear half of the case bottom 5 has a diameter that matches the outer diameter of the case body 1, and this rear end 5b is closed to form a bottom, and a compression coil spring is installed inside the rear end 5b. A protrusion 5f into which the holder 7 is fitted is formed. The operating rod 3 has a cylindrical shape, and its diameter substantially matches the inner diameters of the case body 1 and the case bottom body 5. A magnet 9 is attached to the front end 3a of the operating rod 3 by being sandwiched between yokes 9a, 9a, and a tongue 3c is provided protruding from the circumferential surface so that the front end does not fit into the front end 3a. Further, a groove 3d is provided on the circumferential surface of the operating rod 3 in the axial direction thereof so as to engage with the pawl 1c. Further, the diameter of the rear end 3b of the operating rod 3 is made smaller than that of the front part, and the rotary ring 8 is fitted therein. In addition to imparting elasticity, an engaging piece 3e is provided protruding from the circumferential surface, and a rotary wheel presser 10 is fitted therein. The rotary wheel holder 10 has a recess 10a formed at its rear end to hold the spring 7 between it and the rear end 3b of the operating rod 3. Further, a notch 10b is provided in the recess 10a so that the engaging piece 3e engages therein. The rotating ring 8 has an outer diameter that matches the diameter of the front portion of the operating rod 3, and protrusions 8a and 8b are provided on the outer peripheral surface of the rotating ring 8 at a distance of 180 degrees.

To assemble such components, first, the groove 3b of the operating rod 3 is engaged with the claw 1c of the case body 1, and the operating rod 3 is housed in the case body 1, and then,
A rotary ring 8 and a rotary wheel retainer 10 are fitted to this operating rod 3. Then, one end of the spring 7 is held between the rear end 3b of the operating rod 3 and the recess 10a of the rotary wheel holder 10, and the other end is fitted into the protrusion 5f of the case bottom 5, and inserted into the insertion groove 1e of the case body 1. Case bottom body 5
The case body 1 and the case bottom body 5 are fitted together by inserting the convex portion 5c. At this time, the positions of the peaks of the guide walls 4 and 6 of both the case body 1 and the case bottom body 5 are made to be slightly shifted. After such combination, the hole 1f of the case body 1 and the hole 5d of the case bottom body 5 are bonded together by a desired method to fix the case body 1 and the case bottom body 5.

The operation of this device thus combined is as follows. When the lid 11 is closed, the metal fitting 1 provided on the lid 11
The magnet body 9 of the actuating rod 3 is attracted to the actuating rod 2, and the actuating rod 3 retreats toward the rear end portion 3b. At this time, operating rod 3
The rotating ring 8 fitted to the case bottom body 5 also retreats together, but the protrusions 8a and 8b of the rotating ring 8 retreat within the long groove 1g and come into contact with the guide wall 6 of the case bottom body 5. , 6 are misaligned, so it slides on the slope of this guide wall 6 and is stopped at the trough. When you stop pressing the lid 11, the operating rod 3 tries to return to its original state due to the pressure of the spring 7, so the protrusions 8a and 8b of the rotating ring 8 separate from the guide wall 6 of the case bottom 5 and move away from the case body. The vehicle comes into contact with the guide wall 4, slides on the slope of the guide wall 4, and stops at the trough in the same way as when reversing. Because a long groove of 1g has not been dug in this valley,
The operating rod 3 will be locked at that position. In this state, the magnet body 9 attached to the operating rod 3 attracts the metal fitting 12 of the lid 11, so that the closed state of the lid is maintained. To open the lid 11, press the lid 11 again, the operating rod 3 will move back, and the protrusions 8a, 8 of the rotating wheel 8 will move back.
b slides from the guide wall 4 of the case body 1 to the guide wall 6 of the case bottom body 5, slides on the slope of the guide wall 6, and is stopped at the trough. At this time, if you stop pressing the lid 11, the spring 7 will press the protrusion 8 on the rotating wheel 8.
a and 8b again head toward the guide wall 4 of the case body 1 and slide along its slope to reach a valley, but since a long groove 1g has been dug in this valley, the protrusions 8a and 8b of the rotating wheel 8
8b will move forward within this long groove 1g, and the operating rod 3 will move forward and push the lid 11 to open it. Such an action is achieved by the groove 3d provided in the operating rod 3 and the claw 1d provided in the case body 1 to prevent the operating rod 3 from accurately sliding in its axial direction and rotating in its circumferential direction. At the same time, this can be easily achieved because the rotary ring 8 is fitted to the operating rod 3 so as to be rotatable in the circumferential direction. In addition, the rotating wheel holder 10 is fixed by the notch 3f provided in the operating rod 3 and the engaging piece 3e, and prevents the rotating wheel 8 from moving independently in the axial direction, so the rotating wheel 8 is always It slides and rotates integrally with the operating rod 3, and there is no play in the rotating wheel 8.

FIG. 8 shows another embodiment, according to the drawing:
The case bottom body with a serrated protrusion at the tip is omitted, and a cam groove 14 consisting of a zigzag endless groove 14a and a long groove 14b is carved on the inner peripheral surface of the cylindrical case body 13. A bending groove 15 is further provided from the tip and reaches the tip of the case body 13. When assembling, first place the protrusions 8a and 8b provided on the rotating ring 8 against the entrance of the bending groove 15 at the tip of the case body 13, and while pressing them, rotate the rotating ring 8 along the bending groove 15. The protrusions 8a and 8b are guided into the long groove 14b while being pressed, and then guided into the endless groove 14a with which the rear end portions are connected. After doing this, next move the operating rod 3.
When inserted into the housing hole 13a from the tip side of the case body 13, the operating rod 3 passes through the rotating ring 8, and the rotating ring 8 is attached to its outer periphery. Next, a rotary wheel holder 10 is press-fitted from the rear end of the operating rod 3 to rotatably fix the rotary wheel 8. After this, the compression coil spring 7 is applied to the rear end of the operating rod 3, and while pressing it, the bottom cover 16 is covered and fixed, and the assembly is completed. The subsequent effects are the same as those of the previous embodiment.

This configuration has the advantage that the structure is simpler and assembly is easier.

Although the invention has been described above as being mainly used for racks for audio equipment, it goes without saying that it can also be used for ordinary furniture other than racks.

As described above, according to the present invention, the assembly is easy due to the simple groove structure, and the structure of the rotary ring rotatably fitted to the operating rod enables the sliding locking and disassembly of the operating rod. The operation is extremely smooth and reliable,
There is no risk of malfunction even after many years of use.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is an exploded perspective view, Figures 2 and 3 are cross-sectional views showing the operating state, Figure 4 is a cross-sectional view of the case body, Figure 5 is a cross-sectional view showing the endless groove, and Figure 6 is a cross-sectional view of the case body. 7 is an enlarged sectional view taken along line AA in FIG. 2, FIG. 7 is an enlarged sectional view taken along line BB in FIG. 3, and FIG. 8 is a sectional view showing another embodiment. 1... Case body, 3... Operating rod, 4, 6...
Guide wall, 5... Case bottom body, 7... Compression coil spring, 8... Rotating wheel.

Claims (1)

[Claims for Utility Model Registration] 1. A case body having a housing hole with a circular cross section in the axial direction, an operating rod non-rotatably and retractably inserted into the housing hole of the case body; A magnet body attached to the tip of the case body or the tip of the operating rod, a spring elastically installed between the operating rod and the case body, and a spring that locks the operating rod with the first press. It consists of a push latch mechanism configured to release the lock with the next press, and this push latch mechanism is arranged in a zigzag-like endless structure carved in the inner circumferential direction of the storage hole of the case body, with the tops of each being offset. A rotary machine comprising a cam groove consisting of a groove and a long groove provided longitudinally from the endless groove, and at least one protrusion that fits into the cam groove and is rotatably mounted on the operating rod in a fixed position. An opening/closing holding device for a lid body, etc., characterized by comprising a ring. 2. The cam groove is a serrated guide wall and long groove provided in the storage hole on the case body side, and the guide wall provided at the tip of the cylindrical case bottom body that is fitted into the case body. The opening/closing holding device for a lid or the like according to claim 1, which is characterized in that the opening/closing device is comprised of sawtooth-like protrusions whose tops are offset from each other.