JPH0332206Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a loosening prevention structure for various door handle devices in buildings.

For example, when attaching a lever handle to an opening/closing door in a building, the conventional method is to first install the spindle of one lever across the door from the outside of the door, and then attach the spindle of the other lever from the indoor side to the spindle. After the shaft cylinders of the lever are fitted together, the tip of the male screw threaded through the shaft cylinders is pressed against the surface of the support shaft, thereby assembling and integrating the shaft cylinders onto the support shaft.

However, in this fixed state, the tip of the male screw screwed into the shaft cylinder and the surface of the spindle are
Because they are in rigid contact with each other, external forces such as vibrations and shocks that occur when the door is repeatedly opened and closed act directly on the male screw, causing the male screw to unscrew over time or cause the shaft to become damaged. This will damage the threaded surface with the cylinder, resulting in rattling between the support shaft and the cylinder. Therefore, it is necessary to retighten the male screw as appropriate to improve its fixation.

The present invention is intended to solve these problems, and its specific configuration will be described in detail based on the illustrated embodiments as follows.

That is, FIGS. 1 to 10 illustrate the present invention applied to a so-called lever handle, in which reference numeral 11 denotes an opening/closing door of a building, from which a lock rod 12 protrudes and retracts. 13 is a general term for the metal handle device for the door, which is a pair of levers 14 facing each other,
15. A detailed explanation of the structure of the assembly will be omitted, but in short, a support shaft 16 in the form of a square bar that penetrates and crosses the door 11 projects from one of the levers 14 so that the lever 14 can be rotated. Correspondingly, a shaft cylinder 17 is integrally provided from the other lever 15 and is fitted onto the support shaft 16 thereof.

The support shaft 16 is installed to penetrate the door 11 from the outdoor side, and then the shaft cylinder 1 is attached to the support shaft 16 from the indoor side.
7 are fitted together, and a male screw 19 is screwed into the screw hole 18 of the shaft cylinder 17 on the indoor side, and the pressing force of the male screw 19 against the surface of the support shaft 16 allows the door 11 to be stably attached as a whole. It will be assembled and fixed. And the handle device 13
In the operating state, both levers 14 and 15 rotate integrally with each other, and the lock rod 12 is not sunk from the end surface of the door 11 unless the levers 14 and 15 are rotated. In this regard, in the illustrated embodiment, the handle is equipped with levers 14 and 15, but as long as the assembly can perform the above-mentioned function, a knob (so-called grip ball) or a knob (so-called grip ball) may be used in place of the levers 14 and 15. The present invention can be applied in exactly the same manner to the door handle device 13 having other operation modes.

The fact that the support shaft 16 is in the form of a square rod and has the flat surface portion 20 on its surface means that it functions as a rotation stopper for the shaft tube 17 itself fitted thereto. Although the square rod is shown as having a rectangular cross section in the figure and is therefore provided with a plurality of flat surface portions 20, if it is possible to prevent the shaft cylinder 17 from rotating with respect to the support shaft 16, for example, On a round bar support shaft 16 as shown in Fig. 11,
One or more flat surface portions 20 may be cut out.

Reference numeral 21 denotes a groove for receiving a male screw, which is formed in the flat surface 20 of the spindle 16 by cutting with a round knife, for example, and is compatible with the screw hole 18 opened in the shaft cylinder 17. do. The grooves 21 are arranged in a row with a constant length (L) extending in the longitudinal direction of the support shaft 16.
If the thickness of the door 11 changes, the position at which the shaft cylinder 17 is fixed by the male screw 19 can be adjusted. Moreover, the concave groove 21 has a V-shaped cross section that expands at a certain angle (θ) such as about 90 degrees, and the male screw 19 is smoothly received inside the opening, and the male screw 19 is attached to the bottom of the groove. The distal end of the tip is designed to fit substantially correctly and automatically provide accurate centering.

In the illustrated embodiment, an uneven strip 22 having a serrated cross-section or the like with a ridge line orthogonal to the longitudinal direction of the support shaft 16 is carved on the opposing inclined inner wall surface of the groove 21, thereby enhancing the male It increases the biting frictional force with the screw 19 and enhances the effect of preventing the male screw 19 from becoming misaligned or loosening. However, the surface may be roughened by providing irregularities other than the linear shape, or the inclined inner wall surface may be left in a smooth flat state.

Further, 23 is a pressure body storage chamber which is deeper from the bottom surface of the groove 21 and is recessed to communicate with the groove 21, and has a constant opening length like the groove 21. The support shaft 16 has a depth (l), and its depth is determined to become gradually shallower toward the protruding tip end of the support shaft 16. In this regard, in order to indicate the inclined state of the groove bottom surface in the storage chamber 23, the dimensional difference between the maximum depth and the minimum depth is given the symbol H in the drawing. Moreover, at one end of the storage chamber 23 extending as a certain length (l),
In other words, a pair of overhanging chambers 24 are opened to communicate with each other in a relationship perpendicular to the longitudinal direction of the support shaft 16 at the rear end portion having the maximum depth. the result,
The elastic body 25 buried in the storage chamber 23 with the overhanging chamber 24 is never likely to be pulled out. However, instead of the above-described change in the depth of the storage chamber 23 and the setting of the overhanging chamber 24 to prevent it from coming off, the effect of preventing it from coming off may be achieved by other configurations, or the elastic body 25 may be fixed inside the storage chamber 23. There is no problem in omitting such a structure for preventing slipping off as long as it is possible.

The elastic body 25 is made of a relatively hard synthetic resin such as ABS resin or nylon resin, rubber, or other resilient material that can be deformed to its original state.
It is manufactured in a form corresponding to the attached storage chamber 23, that is, T-shaped when viewed from the plane of the figure and L-shaped when viewed from the side. Reference numeral 26 designates a pair of ear pieces that are compatible with the overhanging chamber 24. Then, the elastic body 25 is inserted into the storage chamber 2 by, for example, press-fitting means from above.
3 in a fixed state, and in this state comes into contact with the tip of the male screw 19 received in the groove 21. In other words, when the male screw 19 screwed into the screw hole 18 of the shaft cylinder 17 is tightened, the elastic body 25 self-held within the support shaft 16 pushes against the male screw 19.
The shaft cylinder 17 comes into strong contact with the tip of the shaft and is elastically deformed, and the restoring force is applied to the male thread 19, so that the shaft cylinder 17 is assembled and fixed to the support shaft 16 in an elastic state. That will happen. Note that the symbol T in the figure indicates the permissible amount of the above-mentioned elastic deformation.

In FIGS. 1 to 10, a so-called concave groove with a bottom is shown as the storage chamber 23 for the elastic body 25, but by fitting the shaft cylinder 17 into the support shaft 16 equipped with this, the elastic body 25 can be accommodated. Since there is no fear that the pressure body storage chambers 25 may fall off, the pressure body storage chambers 23 may be arranged in a row in the form of bottomless through holes, as shown in FIG. Further, as illustrated in FIG. 13, one support shaft 16 has a plurality of flat surface portions 20.
while making use of the groove 21 for receiving multiple male screws.
It is also possible to arrange the pressure body storage chambers 23. Furthermore, if it is not necessary to carry out the adjustment function for the thickness change of the door 11 described above, the male screw receiving groove 21 and the elastic body storage chamber 23 can be extended to the above-mentioned constant length (L) (l). A required number of such devices may be installed in a so-called scattered state in which no such devices are provided, and any of them belong to the present invention.

As described above, in the present invention, the groove 21 for receiving the male screw 19 is provided on the surface of the support shaft 16 that is first attached to the door 11 side, and then the shaft tube 17 on the handle side is fitted onto the support shaft 16. Then, the door handle device 13 assembles and fixes the shaft cylinder 17 to the support shaft 16 by pressing the tip of the male screw 19 screwed through the screw hole 18 of the shaft cylinder 17 against the surface of the support shaft 16. A resilient body storage chamber 23 is formed in the support shaft 16 and communicates with the concave groove 21, and a resilient body 25 that comes into contact with the tip of the male screw 19 is buried in the housing chamber 23. The structure is such that the shaft cylinder 17 is assembled and fixed to the support shaft 16 in a resilient state by applying the restoring force of the resilient body 25 that occurs at the time of contact to the male screw 19, thereby solving the problem mentioned at the beginning. Although the structure is extremely simple, it has the effect of completely eliminating the problem.

In other words, even if external forces such as vibrations and shocks are applied due to repeated opening and closing of the door 11, this will be automatically and reliably absorbed by the elastic body 25, and due to its elastic fixed state. , it is possible to reliably prevent the male screw 19 from loosening, and there is no need for any troublesome work such as retightening the male screw 19.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the door handle device according to the present invention, Figs. 2 and 3 are a front view and a plan view of the assembled state, Fig. 4 is a plan view showing one lever extracted, and Fig. 5 The figure is a partially enlarged cross-sectional view taken along line A-A in Figure 4, Figure 6 is a plan view of Figure 5, and Figures 7 and 8 are respective views taken along line B-B and Line C-C in Figure 5. 9 is an enlarged sectional view taken along line D-D in FIG. 2, FIG. 10 is a partially cutaway side view of FIG. 9, and FIG.
13 are sectional views of various modifications corresponding to FIG. 7. 11...Door, 13...Handle device, 14,1
5... Lever, 16... Support shaft, 17... Shaft cylinder, 1
8... Screw hole, 19... Male screw, 21... Concave groove for receiving male screw, 22... Concave and convex strip, 23... Pressure body storage chamber, 24... Overhanging chamber, 25... Pressure body,
26...Ear piece.

Claims (1)

[Claims for Utility Model Registration] 1. A concave groove for receiving a male screw is provided on the surface of the spindle that is attached to the door side first, and then the stem tube on the handle side is fitted to the spindle, and the stem tube is In a door handle device that fixes and integrates a shaft cylinder onto a support shaft by pressing the tip of a male screw inserted through a screw hole against the surface of the support shaft, the support shaft has a recess for receiving a male screw. A resilient body storage chamber is formed that communicates with the groove, and a resilient body that comes into contact with the tip of the male screw is buried in the housing chamber, and the restoring force of the resilient body that is generated when the resilient body comes into contact is applied to the male screw. Accordingly, there is provided a loosening prevention structure for a door handle device, characterized in that the shaft cylinder is assembled and fixed to the support shaft in a compressed state. 2. The loosening prevention structure for a door handle device according to claim 1 of the registered utility model claim, characterized in that the elastic body is made of rubber or synthetic resin that can be restored and deformed. 3. A door handle device according to claim 1 of the Utility Model Registration Claim, characterized in that the groove for receiving a male screw is widened to have a V-shaped cross section, and the opposing inclined inner wall surface is provided with unevenness. anti-relaxation structure.