JPH066728U - Nut holding hole - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the nut from falling out of the nut holding hole when attaching parts to parts where the operator's fingers cannot reach. [Structure] A nut holding hole of a screw and a nut for joining parts to each other, and a nut holding hole having a shape substantially similar to this nut is provided in a part of the part molded of resin, and the nut is provided in an inner wall portion of the nut holding hole. A claw portion is provided on the tip end portion of the movable piece that expands and contracts when inserting a rib or a nut that holds the nut into the nut holding hole. [Effect] Even when a work including a component including the nut is performed, the nut can be locked without pressing the nut by a worker's hand to prevent the nut from falling.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a nut holding hole for holding a nut used for locking a screw used for locking a component, particularly in a narrow place where a worker cannot reach. This relates to the nut holding hole that prevents the nut from falling out of the nut holding hole in dangerous places.

[0002]

[Prior art]

 Conventionally, a method using screws and nuts has been known as one of the methods of fastening parts, but when using commercially available nuts as one of the methods, the purpose is to improve the fastening work of the screws and nuts. Therefore, a method is known in which a nut holding hole similar to the outer shape of the nut is provided in the component on the nut mounting side to prevent the nut from rotating during fastening. In particular, electronic-related products have been downsized in recent years, and screws and nuts are often used for connecting parts, that is, resin parts. There, I had a hard time joining parts that the operator's fingers could not reach in order to catch up with the mounting technology for electronic-related products. An insert molding method is known in which a nut is molded integrally with a resin component when it is mounted in such a mounting place.

[0003]

[Problems to be solved by the device]

 However, with the conventional method described above, the former nut holding hole that suppresses rotation of the nut can be used because a commercially available nut can be used, but it is cheap depending on the mounting direction of the part. There is a problem that it is impossible to fasten the nut with the operator's finger to fasten the nut with the screw depending on the position where the part is attached, and thus there is a method to prevent the nut from falling off. There is the latter insert molding method mentioned above as the above.In this insert molding method, the nut is temporarily fixed to the mold, and the resin is poured around the mold and the temporarily fixed nut, and the nut is tightened. To lock the nut, special nuts such as knurling and vertical groove for pouring the resin must be applied to the nut that locks the mold. Price of pictorial nut itself had become expensive.

Further, the resin molding die also needs a holding mechanism for holding the nut, and when the nut appears on the external surface of the die, if the resin flows into the nut surface, the aesthetic appearance is deteriorated. Will end up. Moreover, the thickness and dimensional accuracy of the nut and the positional accuracy of the holding mechanism for the resin molding die are required, which makes the resin molding die expensive and costly.

[0005]

[Means for Solving the Problems]

 The present invention has been made in view of the conventional problems, and is a nut holding hole of a screw and a nut for joining parts to each other, the nut holding hole having a means for locking the nut. It proposes a hole.

[0006]

[Action]

 That is, in the present invention, a protruding rib is provided in the nut holding hole for inserting the nut, and the nut can be held by the protruding rib, so that the nut inserted into the nut holding hole is It can be prevented from falling off. Further, by providing a movable piece provided with a claw portion on the inner wall of the nut holding hole, the claw portion can hold the upper end peripheral edge portion of the nut, so that the nut can be prevented from falling off.

[0007]

【Example】

 Hereinafter, details of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a view showing the internal structure of the coordinate input device (not shown), in which the cords used for electrical-related wiring (not shown) of electronic-related products are collectively locked. It is a nut holding hole 1 that is similar in shape to the nut that is provided to hold the nut used when fastening a screw to the above-mentioned part with a part that is used in a complicated part, and is used to put together the wiring It is molded into a part of the part. This is an embodiment in which a protruding rib 3 for holding a nut inserted into the inner wall 2 of the nut holding hole is provided. The protruding rib 3 is formed of the same resin as the inner wall 2 of the nut holding hole, such as plastic. In FIG. 1, reference numeral 4 is a through hole 4 for allowing a screw for fastening an inserted nut to pass therethrough, which is arranged in the center of the nut holding hole.

FIG. 2 is a vertical cross-sectional view when the nut 5 is inserted into the nut holding hole 1. The nut 5 to be inserted is sandwiched so as to come into pressure contact with a rib 3 having a protruding shape provided in the nut holding hole 1. At this time, in order to prevent the operator from crushing the projecting rib 3 at the part where the nut 5 and the projecting rib 3 provided on the inner wall 2 of the nut holding hole 1 contact with the fingertip, Insert into the nut holding hole 1 from a direction slightly oblique to the holding hole 1. The protruding ribs 3 provided on the inner wall 2 of the nut holding hole 1 are formed of the same resin such as plastic as the inner wall 2 of the nut holding hole, so that the nut inserted into the nut holding hole is locked. It has such elasticity that the nut 5 inserted into the nut holding hole 1 can be pressed against it.

Further, in the embodiment shown in FIG. 1, the rib 3 having a protruding shape is arranged on the inner wall 2 of the nut holding hole 1 at the center of one of the facing inner walls of the nut holding hole 1. The ribs 3 are provided to hold the nut 5, and it is possible to appropriately change the arrangement position of the ribs 3 having a protruding shape and increase or decrease the number of arrangements.

FIG. 3 shows an embodiment in which a movable piece 7 having a claw portion 6 is arranged to press the nut. Reference numeral 8 is a nut holding hole having a shape similar to that of the nut to be inserted, and a movable piece 7 for holding the nut is provided on an inner wall 9 facing the nut holding hole 8. FIG. 4 is a cross-sectional view of FIG. 3, and reference numeral 10 is an escape hole of the movable piece 7 when the nut is inserted into the nut holding hole 8. Reference numeral 11 is a through hole for a screw (not shown), and is provided at the center of the bottom of the nut holding hole 8.

FIG. 5 is a sectional view when the nut 5 is inserted into the embodiment of FIG. Actually, when the operator inserts the nut 5 into the nut holding hole 8, the bottom 12 of the nut 5 is pressed against the claw 6 of the movable piece 7 with an appropriate force to push the nut 5 with the operator's finger. The movable piece 7 having the portion 6 is spread by the force of pushing the nut 5 downward. The expanded movable piece 7 is expanded into the escape hole 10 of the movable piece 7. The nut 5 inserted to the bottom portion 13 of the nut holding hole 8 can be held by gripping the upper end peripheral edge portion of the nut 5 by the claw portion 6 of the movable piece 7.

[0012]

[Effect of device]

 As described above, according to the present invention, the nut-holding part is provided with the nut so that the nut can be held by providing the projecting rib or the movable piece having the claw portion on the inner wall of the nut holding hole. Even when performing work to attach the nut, the nut can be locked without pressing it by the operator's hand to prevent the nut from falling, and the operator cannot put his or her hand in a narrow space. Even in parts mounting parts or parts mounting parts that are dangerous, it is possible to proceed smoothly without worrying about the nut falling.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment in which a protruding rib is provided in a nut holding hole.

FIG. 2 is a sectional view when a nut is inserted into the embodiment shown in FIG.

FIG. 3 is a perspective view of a nut holding hole including a movable piece provided with a claw portion on an inner wall of the nut holding hole.

FIG. 4 is a sectional view of FIG.

5 is a cross-sectional view when a nut is inserted in the embodiment of FIG.

[Explanation of symbols]

 1 Nut-holding hole of similar shape 2 Inner wall of nut-holding hole 3 Protruding rib 4 Through-hole for penetrating screws 5 Nut 6 Claw 7 Movable piece 8 Nut-holding hole 9 Inner wall of holding hole 10 Escape hole of movable piece 11 Through Hole for Penetrating Screw 12 Bottom of Nut 13 Bottom of Nut Holding Hole

Claims (1)

[Scope of utility model registration request] 1. A nut holding hole for a screw and a nut for joining parts to each other, wherein the nut holding hole has means for locking the nut.