JP2008045589A - Rod member fixing structure and rod member fixing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple rod member fixing structure for fixing a rod member into a through-hole of a plate member, and to provide a fixing method. <P>SOLUTION: The structure comprises the rod member 13 inserted and fixed into the through-hole 22, and the plate member 21 combined therewith and having the through-hole 22. The through-hole 22 has a plurality of tongue protrusions 25 which are protruded toward the inside of the through-hole 22 and elastically deformed in contact with the outer periphery of the rod member 13 when inserted, to constrain the come-off of the rod member 13 by wedge action and fix the rod member 13 into the through-hole 22. The through-hole 22 having the tongue protrusions 25 functions as a fixture such as a prior-art speed nut 14 and eliminates the need for individual fixtures. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a rod-shaped member fixing structure and a fixing method in which a small rod-shaped member such as a pin, a screw, or a screw is passed through a through-hole provided in a plate-shaped member and is restrained and fixed in that state.

  Various structures and methods have been proposed in which a small rod-like member such as a pin, a screw, or a screw is passed through a hole provided in the plate-like member, and is restrained and fixed in the penetrated state. The plate-like member here refers to a plate-like member that does not have a sufficient plate thickness to be provided with a screw hole for tightening a screw or screw to be fixed, such as a thin plate steel plate. An example of a conventional fixing means is a tapping screw, which is fixed while cutting a groove that allows the screw itself to be screwed into a plate material. This method requires an operation of screwing a screw.

  As another simpler fixing means, use of a fixing tool called a speed nut or a push nut is known (for example, see Patent Document 1). Fig.4 (a) has shown an example of the speed nut. The pin 13 is inserted into the hole 12 provided in the plate-like member 11, and the pin 13 is restrained and fixed to the plate-like member 11 by inserting the speed nut 14 into the rod-like portion of the pin 13 and pressing it from the opposite side. .

  FIG. 4B shows a cross section taken along line AA of the speed nut 14 shown in FIG. The speed nut 14 is made of a ring-shaped member formed by punching a plate material, and a plurality of (four in the illustrated example) tongue-like projections 15 protrude from the edge of the hollow portion toward the center of the hollow portion. The holes are inclined along the central axis direction of the hole 12 which is perpendicular to the plane of the ring-shaped portion.

  When the speed nut 14 formed in this way is penetrated through the rod-shaped portion of the pin 13, the tongue-shaped protrusion 15 is arranged so that the inclination is along the penetrating direction and is pushed into the rod-shaped portion of the pin 13. At the time of pushing, a hollow cylindrical pipe-like jig (not shown) is usually used, and the end face of the jig is brought into contact with the ring-shaped portion of the speed nut 14 and pushed. The rod-shaped portion of the pin 13 enters the hollow portion of the jig when the speed nut 14 is pushed. Since the inner diameter of the speed nut 14 serving as an inscribed circle at the tip of the tongue-like protrusion 15 is formed to be smaller than the outer diameter of the pin 13, the tongue-like protrusion 15 is further elastically deformed in its tilting direction by being pushed.

  When the speed nut 14 is pushed in fully until it comes into contact with one surface of the plate-like member 11 and the large-diameter head portion 16 provided at one end of the pin 13 comes into contact with the opposite surface of the plate-like member 11, 13 is fixed by a speed nut 14 with the plate-like member 11 interposed therebetween. Even if the pin 13 is pulled back from this state, the tongue-like projection 15 bites into the outer periphery of the pin 13 in a wedge shape and restrains the return, so that the pin 13 (or the speed nut 14) is not loosened and the pin 13 is fixed. Maintained. In FIG. 4A, only the pin 13 is drawn so as to be fixed to the plate-like member 11. However, for example, other functional parts such as a bracket may be fitted in the rod-like portion of the pin 13 in advance. It is possible to fix the functional component such as the bracket by fixing the pin 13 as described above.

As still another fixing means for fixing the rod-shaped member to the plate-shaped member, a technique for fixing the plate-shaped member and the rod-shaped member itself without using a fixing tool is disclosed in the prior art (for example, Patent Documents). 2). According to this measure, the rod-shaped member is passed through the center of the projecting portion inclined in the axial direction of the through-hole provided in the through-hole of the plate-shaped member, and then the projecting portion is provided on the outer periphery of the rod-shaped member. It is supposed to be deformed and fixed so that it can bite into.
JP 10-47828 JP 2006-105211 A

  When the above-described speed nut, push nut, or the like is used, a rod-like member such as a pin serving as a light load support member can be fixed with one touch without being screwed in, which can be a simple fixing means. However, there is still room for improvement in this fixed structure. That is, in the case of fixing with a conventional speed nut or the like, at least 3 of a plate-like member serving as a fixing main body (base material), a rod-like member such as a pin serving as an object to be fixed, and a speed nut serving as a fixing medium. A dot is an essential component. If the number of components can be reduced, management man-hours and costs can be reduced, and fixing work can be facilitated. In particular, if speed nuts that are difficult to handle with small parts can be reduced, workability can be greatly improved.

  Further, in the invention disclosed in Patent Document 2, it is necessary to form a groove on the outer periphery of the rod-shaped portion in order to fix the rod-shaped member, and when fixing, a projection provided in the through hole is used with equipment such as a press. As a result, additional steps such as plastic deformation were required, and there was room for improvement in cost, workability, and the like.

  As described above, the present invention makes it possible to fix the rod-shaped member to the plate-shaped member by using only the fixed member and the fixed member without using any individual fixing tool such as a conventional speed nut, or press. It is an object of the present invention to provide a simpler rod-shaped member fixing structure and a rod-shaped member fixing method that do not require a device such as the above.

  The present invention achieves the above-described object by eliminating the conventional speed nut and fulfilling the function of the speed nut with a plate-like member, and specifically includes the following contents.

  That is, the first aspect according to the present invention comprises a combination of a rod-shaped member having a large-diameter head portion at one end and a plate-shaped member having a through hole into which the other end of the rod-shaped member is inserted, and the through hole Is a tongue-like protrusion that protrudes toward the inside of the through-hole, and comes into contact with the outer periphery of the rod-shaped member to be inserted, elastically deforms, and restrains the rod-shaped member from coming off by a wedge action (or anchor effect). The present invention relates to a rod-like member fixing structure comprising a plurality of tongue-like protrusions that are fixed in the through hole.

  The plate member can be any one of a steel plate, a stainless steel plate, and a spring steel plate. The rod-shaped member can be any one of a pin, a screw, a screw, and a light emitting diode. The through hole is formed in an elliptical shape, a pair of tongue-shaped projections are projected from the long diameter portion of the ellipse into the through hole, and the short member of the ellipse is in contact with the outer periphery of the rod shaped member. It is also possible to position.

  According to another aspect of the present invention, there is provided a light emitter panel in which one or a plurality of light emitting diodes are fixed to a substrate and the light emitting diodes are turned on and off to transmit a predetermined signal, and the light emitting diodes are disposed on the substrate. In order to fix, it is related with the light-emitting-body panel characterized by using the rod-shaped member fixing structure mentioned above.

  Still another aspect of the present invention is to insert the other end of a rod-shaped member having a large-diameter head portion at one end into a through hole provided in the plate-shaped member, and use the rod-shaped member without using an individual fixture. A plurality of tongue-like projections protruding toward the inside of the through hole and in contact with the outer periphery of the rod-shaped member, and the insertion direction by the insertion operation The wedge-shaped protrusion of the tongue-shaped protrusion that deforms into a shape is used to restrain the rod-like member from coming off, and the rod-like member is fixed in the through-hole while the head portion is in contact with the plate-like member. The present invention relates to a method for fixing a rod-shaped member.

  As a result of the implementation of the present invention, the plate member itself performs the function of the conventional speed nut, so that the speed nut (or equivalent fixture) can be eliminated, and a rod-like member such as a pin is fixed to the plate member. The components in the case can be reduced. In addition, the cost and weight can be reduced, and the workability can be improved.

  Hereinafter, a rod-like member fixing structure and a first embodiment of the fixing method according to the present invention will be described with reference to the drawings. FIG. 1 shows a rod-shaped member fixing structure according to a first embodiment of the present invention. In the figure, a rod-like member such as a pin 13 passes through a through hole 22 provided in the plate-like member 21, is inserted from the front side of the figure, is pushed into the back side of the figure, and is fixed. In the rod-shaped member fixing structure according to the present embodiment, a function of fixing a rod-shaped member or the like to the through hole 22 itself provided in the plate-shaped member 21 is provided. In other words, the through-hole 22 is not a hole (symbol 12 in FIG. 4 (a)) for simply passing a rod-like member such as the pin 13 as found in the prior art (not shown in FIG. , 15), a plurality of (four in the illustrated example) tongue-like projections 25 are formed. The tongue-like protrusion 25 is inclined toward the back side of the drawing with respect to the plate member 21 along the fitting direction of the pin 13 to the plate member 21.

  By configuring the rod-shaped member fixing structure as described above, for example, the pin 13 into which a functional component such as the illustrated cable holder 29 is fitted is pushed into the through hole 22 provided in the plate-shaped member 21 to be fixed. Since the inner diameter of the tongue-like protrusion 25 protruding into the through hole 22 is smaller than the outer diameter of the pin 13, the tongue-like protrusion 25 is further elastically deformed in the inclined direction when the pin 13 is pushed. When the pin 13 is completely pushed in until the head portion 16 of the pin 13 comes into contact with the plate-like member 21, the tongue-like protrusion 25 bites into the outer peripheral surface of the pin 13 in a wedge shape, and the pin 13 acts as a wedge. It is fixed in that state by (or anchor effect). The function of the tongue projection 25 is exactly the same as the tongue projection 15 of the speed nut 14 in the prior art.

  The inner diameter of the tongue-like protrusion 25 described above refers to the diameter of an inscribed circle that contacts the tips of the plurality of tongue-like protrusions 25. Moreover, although the number of the tongue-like protrusions 25 is four in the illustrated example, it is sufficient that there are at least three. However, if the tip of the tongue-like projection 25 is formed in a shape that contacts the rod-like member at a plurality of points such as a U-shape and a V-shape, the number of the tongue-like projections 25 can be two. As another form, a plurality of cuts of a certain length are made in the radial direction of the peripheral edge of the through hole 22, and the portion separated by the cut is inclined in the axial direction of the through hole 22 to restrain the pin 13. Is possible. The tongue-like projection 25 referred to in this specification includes a portion formed on the peripheral edge of the through hole 22 by such a cut.

  The restraining force for fulfilling the function of restraining the stopper includes the outer diameter of the rod-like member such as the pin 13, the specifications of the tongue-like protrusion 25 (including the planar shape, the inclination angle, the number, and the inner diameter), the material of the plate-like member 21 It is possible to obtain a value according to the request by appropriately selecting a plate thickness or the like. The wedge action (anchor effect) is also related to the coefficient of friction between the tongue 25 and the pin 13. As a material of the plate-like member 21, a steel plate, a stainless steel plate, a spring steel plate, and the like can be considered, but are not limited thereto. In addition, the inclination angle of the tongue-like protrusion 25 can be 0 ° (that is, it protrudes in the same plane as the plate-like member 21). In particular, when a spring steel plate is used as the plate-like member 21, such application is possible. Easy.

  In the illustrated example, a round bar pin 13 is displayed as an example of a bar-shaped member, but the bar-shaped member is not necessarily a round bar, and may be a square bar such as a quadrangular column or an octagonal column. In this case, it is desirable that the number of the tongue-like projections 25 is appropriately adjusted according to the cross-sectional shape of the rod-like member. For example, when the cross-sectional shape of the rod-shaped member is an octagon, the number of tongue-like protrusions 25 is preferably four or eight.

  FIG. 2 shows another aspect according to the present embodiment, in which a LED (light emitting diode) 33 is fixed to a substrate 31 that is a plate-like member. The substrate 31 is provided with a through hole 32 from which the tongue-like protrusion 35 protrudes. In the prior art, after the LED 33 is passed through the mounting hole provided in the substrate 32, the speed nut is pushed from the top of the LED 33 to fix the LED 33 to the substrate 31. According to the present embodiment, the LED 33 can be simply fixed simply by being pushed into the through hole 32 of the substrate 31. The LED 33 is provided with a large-diameter flange-shaped head portion 36 that serves as a stopper when contacting the substrate 31. In this specification, like the LED 33, the “bar-shaped member” includes an element that itself becomes a functional component and is fixed without fitting another functional component.

  When the head portion 36 abuts against the plane of the substrate 31 and the LED 33 is fixed, the squareness of the LED 33 with respect to the substrate 31 is ensured and can be stably held. For this reason, the rod-shaped member fixing structure according to the present invention can be suitably used for a light emitter panel in which a large number of LEDs 33 are fixed, such as a traffic light or illumination.

  Next, a rod-like member fixing structure and fixing method according to a second embodiment of the present invention will be described with reference to the drawings. FIGS. 3A to 3C show the rod-like member fixing structure of the present embodiment, and all show the state seen in the axial direction of the rod-like member. First, in FIG. 3A, a through hole 42 that penetrates and fixes a rod-like member such as a pin 43 is provided with two kinds of tongue-like protrusions 45 (45a, 45b) protruding into the hole. In the present embodiment, only a pair of tongue-like projections 45a facing in the horizontal direction in the figure in this figure is elastically deformed in contact with the outer periphery of the pin 43, and a pair of tongue-like projections 45b facing in the vertical direction in the remaining figures. Is formed so that the amount of protrusion into the through hole 42 is less than that of the pair of tongue-like protrusions 45 a and does not elastically deform even if it contacts the outer periphery of the pin 43.

  That is, the pair of tongue-like protrusions 45a restrains the outer periphery of the pin 43 to prevent the pin 43 from coming off, and the other pair of tongue-like protrusions 45b contact with the outer periphery of the pin 43 with an accuracy of about the fitting tolerance. It only serves to position 43 in the center of the through hole 42. For example, such a configuration can be used when a sufficient restraining force of the pin 43 can be obtained even with an elastic force by the pair of tongue-like protrusions 45a.

  However, in the configuration of the present embodiment, the total number of tongue-like protrusions 45 is not limited to four. For example, out of a total of six tongue-like protrusions 45, every other three can be used for restraining the pin 43 by elastic deformation, and the remaining three can be used for centering the pin 43. Alternatively, of the six, only the pair of opposing tongue protrusions 45 a can be used for restraining the pin 43, and the remaining four tongue protrusions 45 b can be used for centering the pin 43. Even if the total number of the tongue-like projections 45 is other than six, as long as the pin 43 is positioned at the center of the through hole and the removal of the pin 43 is restrained, any of the tongue-like projections 45 It is possible to use one part for restraint and the other part for positioning.

  FIG.3 (b) has shown the other aspect of the rod-shaped member fixing structure concerning this Embodiment. In the figure, the through-hole 42 is formed in an elliptical shape, and a pair of tongue-like projections 45 are provided on the major axis side of the ellipse in the horizontal direction of the figure, thereby constraining the omission by contacting the outer periphery of the pin 43. . A tongue-like projection is not provided on the short diameter side in the vertical direction in the figure, and the outer periphery of the pin 43 is positioned and regulated by the short diameter portion of the through hole 42 itself. In such a structure, the through hole 42 is not necessarily an ellipse, but may be an oval, gourd, or extremely rectangular shape having another shape. In this specification, these shapes are collectively included in an “elliptical shape”.

  In yet another embodiment shown in FIG. 3C, the through hole 42 is formed to have a diameter large enough to fit the pin 43. The tongue-like projection 45 slightly protrudes into the through hole 42 and can be engaged with the outer periphery of the pin 43. The arm portion to be elastically deformed is formed by providing a cut 46 in the plate-like member itself. Yes. With such a structure, positioning of the pin 43 can be made more reliable. Although the figure shows the correspondence to the pin 43 having a round cross section, the rod-shaped member may be a rod-shaped member having another cross section such as a quadrangular column or a hexagonal column. In this case, the through hole 42 corresponds to the rod-shaped member. It is formed in a hole shape. In the illustrated example, two tongue-like protrusions 45 are shown, but other numbers may be used.

  As mentioned above, although the rod-shaped member fixing structure of each embodiment concerning this invention has been described, this invention also includes the rod-shaped member fixing method using the said fixing structure. The method is a method of inserting the other end of a rod-shaped member having a large-diameter head portion at one end into a through-hole provided in the plate-shaped member, and fixing the rod-shaped member to the through-hole. A plurality of tongue-like projections projecting to contact the outer periphery of the rod-shaped member toward the inside of the rod-shaped member, and fixing the rod-shaped member using the wedge action of the tongue-shaped projection deforming in the insertion direction by the insertion operation About.

  Moreover, in the example in the above embodiment, although it demonstrated by the content which fixes the rod-shaped member which is a to-be-fixed member with respect to the plate-shaped member which is a fixing member, the relationship of both can also be reversed. It is. That is, when a rod-like member as a fixing member protrudes from the main body side of equipment or the like and a plate-like member that is a fixed member having a through hole having a tongue-like projection is fixed to the rod-like member, the same applies. Can be applied. This is only a difference in which one is viewed as a main body, and there is no substantial difference. Therefore, “fixing a rod-shaped member” in this specification can be read as equivalent to “fixing a plate-shaped member”.

When the rod-shaped member fixing structure and the fixing method according to the present invention are compared with the fixing means of the prior art using a fixing tool such as a speed nut, the following remarkable effects can be obtained.
(1) The number of parts is reduced.
Since the function of the speed nut is provided in the fixing hole, the speed nut is not necessary. Thereby, the parts management load, cost, and weight related to the speed nut are reduced.
(2) The cost increase of the tongue-like projections provided in the through holes of the plate-like member can be almost ignored.
The fixing hole of the plate-like member can be formed by press working provided with a plurality of stations. Therefore, although there can be a slight increase in the press mold, the processing cost itself does not change.
(3) Fixing is easy.
Conventionally, two steps are required to be performed from two directions, in which a rod-shaped member is inserted from one side and then a speed nut is pushed from the other side. On the other hand, in the present invention, the fixing is completed by a simple operation of only one step of pushing the rod-shaped member from one side. As a result, the productivity is remarkably improved. For example, manual assembly can improve the productivity by at least two to several times. Further, since a speed nut, which is a small part, is not required, the possibility of parts falling off is reduced, and workability is greatly improved.

Further, when compared with a technique (hereinafter referred to as “disclosed technique”) for fixing a rod-like member to a through hole having a protruding portion disclosed in Patent Document 2, the present invention has the following remarkable effects. .
(1) Fixing is easy.
In the disclosed technique, it is necessary to additionally process a groove on the outer periphery of the rod-shaped member. Also, once the rod-shaped member is passed through the through hole (without elastically deforming the protruding portion), the protruding portion provided around the through hole is bitten into the groove. Therefore, it is necessary to plastically deform the protrusion. On the other hand, in the present invention, it is extremely easy to push and fix by hand, and it is very easy to cope with continuous assembly using an automatic machine.
(2) Processing accuracy is relaxed.
In the disclosed technology, high accuracy control between the groove of the rod-shaped member and the plate thickness of the plate-shaped member is required in order to fix the rod-shaped member to the plate-shaped member without rattling. In the present invention, the rod-shaped member can be easily fixed in a desired state by simply pushing the rod-shaped member until the head portion contacts the plate-shaped member.
(3) Low cost and wide applicability.
From the above, the technique of the present invention is more advantageous in terms of cost because it is easier to process and assemble. In addition, in small glass parts such as LEDs, it is substantially difficult to endure the pressure on the outer peripheral surface and further the plastic member is plastically deformed, so the present invention is much more applicable. It can be said that the nature is wide.

  INDUSTRIAL APPLICABILITY The present invention can be widely used in the industrial field involving an assembling operation for inserting and fixing a rod-like member into an attachment hole provided in a plate-like member.

It is a perspective view which shows the rod-shaped member fixing structure of embodiment concerning this invention. It is a perspective view which shows the other aspect of the rod-shaped member fixing structure concerning embodiment shown in FIG. It is a top view which shows the rod-shaped member fixing structure concerning other embodiment concerning this invention. It is the perspective view (a) which shows the rod-shaped member fixing structure by a prior art, and sectional drawing (b) which shows the speed nut by a prior art.

Explanation of symbols

11. A plate-like member, 12. Hole, 13. Pin, 14. 15. speed nut; Lingual process, 16. Head part, 21. Plate member, 22. Through hole, 29. Rubber cable holder, 25. Lingual projection, 33. LED (light emitting diode), 31. Substrate, 35. Lingual process, 32. Through hole, 36. Head part, 42. Through hole, 43. Rod-like member (pin), 45 tongue-like projection.

Claims (6)

A rod-shaped member having a large-diameter head at one end;
It is composed of a plate-like member having a through hole into which the other end of the rod-like member is inserted,
The through-hole is a tongue-like protrusion that protrudes toward the inside of the through-hole, and comes into contact with the outer periphery of the rod-shaped member to be inserted and elastically deforms. A rod-like member fixing structure comprising a plurality of tongue-like protrusions fixed in a hole. A rod-shaped member having a large-diameter head at one end;
It is composed of a plate-like member having a through hole into which the other end of the rod-like member is inserted,
The through-hole is a tongue-like protrusion that protrudes toward the inside of the through-hole, and comes into contact with the outer periphery of the rod-shaped member to be inserted and elastically deforms. A plurality of first tongue-like protrusions that are fixed in the hole, and a second plurality of tongue-like protrusions that contact the outer periphery of the rod-like member and position-regulate the rod-like member at the approximate center of the through-hole. A rod-like member fixing structure characterized by that.   The through hole is formed in an elliptical shape, a pair of tongue-shaped projections protrude from the long diameter portion of the elliptical shape into the through hole, and the short diameter portion of the elliptical shape contacts the outer periphery of the rod-shaped member. The rod-shaped member fixing structure according to claim 1, wherein the member is positioned.   The light-emitting panel that emits a predetermined signal by fixing one or a plurality of light-emitting diodes on a substrate to turn on and off the light-emitting diodes, to fix the diodes to the substrate. A light emitter panel, wherein the bar-shaped member fixing structure according to any one of the above is used.   In this fixing method, the other end of a rod-shaped member having a large-diameter head portion at one end is inserted into a through-hole provided in the plate-shaped member, and the rod-shaped member is fixed to the through-hole without using an individual fixing tool. A plurality of tongue-like projections projecting toward the inside of the through-hole and contacting the outer periphery of the rod-like member, and utilizing the wedge action of the tongue-like projection that is deformed in the insertion direction by the insertion operation Then, the rod-shaped member is restrained from coming off, and the rod-shaped member is fixed in the through hole in a state where the head portion is in contact with the plate-shaped member. A light-emitting diode fixing method for inserting a light-emitting diode into a through-hole provided in a substrate and fixing the light-emitting diode to the through-hole without using an individual fixing tool, A plurality of tongue-shaped projections protruding toward the outer periphery of the light-emitting diode and constraining removal of the light-emitting diodes using the wedge action of the tongue-shaped projections deformed in the insertion direction by the insertion operation, A method for fixing a light emitting diode, comprising fixing the light emitting diode in the through hole in a state where a large-diameter head portion provided at a base portion of the light emitting diode is in contact with the plate-like member.

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