JP2008095758A - Fastener with barb - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact fastener easy to assemble and disassemble and applicable to precision machinery, which can securely fix a material onto a base so as not to be loosened by vibration. <P>SOLUTION: The fastener is integrally formed of a hard elastic body, and comprises a main body part, a plurality of engaging fixing parts provided at the lower end of the body part, and a plurality of head pressing parts provided at the upper end of the body part. The tool is formed in an X-shape, H-shape or ladder-like shape by cutting out an upper end central part and a lower end central part of the main body part to thereby give transverse elasticity to the upper end part and lower end part of the main body part. When the tool is pressurized in a driving direction, the lower end of the main body is distorted, and bent and contracted toward the central axis of the main body part, whereby the tool is passed through a hole, fitted to the hole, and engagingly fixed to the reverse side of the base by expanding the body lower end outwardly out of the hole to hold the base and a mounted material. When further pressurized in the driving direction, the upper end of the main body part is bent and contracted toward the central axis of the main body part, whereby the tool is passed through the hole and separated therefrom. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is an improvement of the invention described in Japanese Patent Application No. 2006-060798, and is an improvement of the invention of a part of Japanese Patent No. 3746781. A conventional fixture that replaces a screw or a pin, and is a general-purpose fixture for mounting an object on a base by driving both into the hole penetrating the base and the object to be attached, and sandwiching both from above and below. Is. It is a fixture that can be fixed and disassembled easily and is easy to manufacture, contributing to effective use of resources and cost reduction.

  Conventionally, various screws, scissors and the like have been invented to prevent loosening due to vibration when joining parts or the like to an object having vibration. One example of preventing loosening of the screw due to vibration is to cut out part of the male screw and bite into the female screw to prevent reverse rotation. One is to form a double thread on the male screw. Examples thereof include those that provide elasticity and prevent the reverse rotation by improving the adhesion with the female screw, and those that prevent loosening by using an elastic material such as rubber on the nut side. However, as long as it is a screw, there are problems that it is impossible to completely prevent the rotation in the reverse direction and that the cost is high, so that a sufficient effect has not been achieved. In recent years, the importance of resource conservation and the recycling of equipment for that purpose has been screamed from the viewpoint of environmental protection. However, since much labor is required for disassembling, the parts themselves are often destroyed and used as raw materials instead of being reused. It is desired to develop a general-purpose fixture that is easy to assemble and disassemble and does not loosen.

Japanese Patent No. 3746781 Publication No. 3746781 is a technology developed to solve the above-mentioned problems, and is effective for fixing in an instrument having vibration. However, the fixing part of the present invention is “the fixing part is branched from the main body trunk part, obliquely upward, bent and directed downward, and the arm part of the fixing part extends along the extension line of the main body trunk part. Therefore, the fixed portion must be protruded larger than the object to be attached. If the bent fixed part has a certain thickness, it is impossible to extend the fixed part in a straight line when disassembling. The width of the hole required for passage is increased by bending when it is deformed to be along the extension line, and the base and the attachment are slipped off to allow the base and the attachment to be disassembled. It becomes difficult to perform the function. Even if the fixed part is bent obliquely upward and bent in the horizontal direction, or even if the fixed part that is bent obliquely upward and bent downward has a certain thickness, it is easy to slip through the base and the attachment. A fixture that can be disassembled is desired.

  To provide a low-cost fixture that can be easily assembled and disassembled, that can securely join materials on a substrate, that does not loosen due to vibration, and that can be used in precision machinery.

A rod formed integrally with a hard elastic body, comprising a main body barrel, a plurality of engaging portions provided at the lower end of the main body barrel, and a plurality of head pressing portions provided at the upper end of the main body barrel. Alternatively, it is a thick plate that is driven by a driving tool having a window on the upper part of the pressure unit, places an object to be mounted on the base, and has a hole that penetrates both the base and the base to be attached vertically. A fixture that is driven into a hole and clamped and fixed together by the engaging portion and the head pressing portion, and is formed in an X-shape by cutting out the upper-end central portion and the lower-end central portion of the body trunk portion. Constructed in an H-shape or ladder shape, the upper and lower ends of the main body barrel have elasticity in the lateral direction, and when pressed in the driving direction, the lower end of the main body bends toward the central axis of the main body barrel. Bend and squeeze through the hole and fit into the hole. When the lower end of the main body expands outwardly, it is engaged with the back side of the base to sandwich the base and the attachment object, and further pressurizing in the driving direction causes the upper end of the main body to be A fixing device characterized in that it is bent toward the central axis and the inner end portion of the head pressing portion is narrowed by escaping into the window of the driving tool, and is configured to be able to pass through the hole and release. Provide.

A rod formed integrally with a hard elastic body, comprising a main body barrel, a plurality of engaging portions provided at the lower end of the main body barrel, and a plurality of head pressing portions provided at the upper end of the main body barrel. Alternatively, it is a thick plate that is driven by a driving tool having a window on the upper part of the pressure unit, places an object to be mounted on the base, and has a hole that penetrates both the base and the base to be attached vertically. A fixture that is driven into a hole and clamped and fixed together by the engaging portion and the head pressing portion, and is formed in an X-shape by cutting out the upper-end central portion and the lower-end central portion of the body trunk portion. Constructed in an H-shape or ladder shape, the upper and lower ends of the main body barrel have elasticity in the lateral direction, and when pressed in the driving direction, the lower end of the main body bends toward the central axis of the main body barrel. Bend and squeeze through the hole and fit into the hole. When the lower end of the main body expands outwardly, it is engaged with the back side of the base to sandwich the base and the attachment object, and further pressurizing in the driving direction causes the upper end of the main body to be A fixing tool characterized in that it is bent toward the central axis and the inner end portion of the head pressing portion is narrowed by escaping into the window of the driving tool, and is able to pass through the hole and be removed. Therefore, it has the following effects.

  Fixtures that are easy to assemble and disassemble equipment and can contribute to the reuse of parts. Simple fixtures that are easy to manufacture and can be used in precision machines. Can be provided.

  A part of the present invention is an improved invention of Japanese Patent No. 3746781, and is a fixture that does not cause loosening and is particularly effective for an object to be vibrated vigorously, and is easy to assemble and disassemble and is a conventional nail. The present invention relates to a general-purpose fixture that replaces the screw and screw. In addition, the plate shape in this application means that it looks like a plane as a whole, and includes a state where objects are continuously arranged with gaps in the shape of a scissors.

  FIG. 1 is a perspective view of the first embodiment. The main body barrel 1 integrally formed of a hard elastic body is cut out at the upper and lower portions of the main body barrel 1 so that the overall shape is X-shaped, H-shaped, or ladder-shaped. Moreover, the upper part of the main body trunk | drum 1 exhibits arm shape by the said notch, and the lower part exhibits leg shape. The notch has a width that allows the arm-like body 11 (1) and the leg-like body 12 (1) generated by the notch to bend toward the central axis of the main body trunk 1. Shall. The number of the arm-like bodies 11 (1) and the leg-like bodies 12 (1) is an arbitrary plural, but is usually within eight. The plurality of arm-like bodies 11 (1) and the plurality of leg-like bodies 12 (1) constitute a connecting portion 13 (1) at an arbitrary upper and lower position on the main body barrel 1, in the upper and lower central portions in the figure. The left and right arm-like bodies 11 (1) and the plurality of leg-like bodies 12 (1) are connected. The upper surface of the connecting portion 13 (1) is a driving surface 14.

  The upper side of the arm-like body 11 (1) and the outer side surface of the lower part of the leg-like body 12 (1) are formed so as to protrude outward in the entire body trunk portion, thereby forming the pressing portion 2. The upper end of the arm-shaped body 11 (1) is bent outward, and the head pressing portion 3 is configured in each of the plurality of arm-shaped bodies 11 (1). The lower surface of the head pressing portion 3 serves as an attachment pressing surface 31 for pressing the attachment and attaching the attachment on the base. The lower end of the main body barrel 1, that is, the lower end of the leg-shaped body 12 (1) is bent outward to form a plurality of engaging portions 4. The upper surface of the engaging portion 4 becomes an engaging surface 41 that presses the base upward. The angle formed by the line connecting the base 42 of the engaging surface 41 and the tip 43 of the engaging surface 41 intersecting the center line of the main body body 1 is set to 90 degrees or less. The contact between the arm-like body 11 (1) and the attachment pressure-bonding surface 31, and the contact between the leg-like body 12 (1) and the engaging surface 41, is cut into a smooth shape to form a strain relief 15. The front end of the leg-shaped body 12 (1) is made an acute angle and is inclined so that the lower end of the main body body 1 as a whole is narrowed to become a guide angle. It is assumed that the guide part 5 for this purpose.

  FIG. 2 is a first operation diagram of the first embodiment. The fixing tool in this figure is formed into a smooth shape with fewer corners of the fixing tool shown in FIG. 1, and the configuration and function are basically the same as those shown in FIG. An attached object 62 is placed on a base 61 that is the installation target 6, and a hole 63 that penetrates both the base 61 and the attached object 62 is provided. The guide 5 of the fixing tool is directed to the edge of the hole 63, the driving tool 7 is applied to the driving surface 14 and pressed in the direction of the arrow A81 to drive the fixing tool into the hole 63. The driving tool 7 is a bar or a plate having a thickness of at least a portion used for direct driving, and has a pressure portion 71 used for driving and a window 72 on the upper portion thereof. The pressing portion 71 is provided at a position where the lower end of the driving tool 7 is cut upward, and its lower surface is referred to as a pressing surface 711. The notch has a laterally inclined side and forms a guide 73 for the driving tool. When the guide portion 5 of the fixture of the present fixture is applied to the edge of the hole 63 and the driving tool 7 is applied to the driving surface 14 and pressed in the driving direction, that is, in the direction of the arrow A81, the guide portion 5 moves the edge of the hole 63. It slides and the leg part 12 squeezes inward and slides into the hole 63. The subsequent operation will be described with reference to FIG. 3 which is the second operation diagram.

  FIG. 3 is a second operation view of the first embodiment, and FIGS. A to F are holes through which the fixing tool of the present application is pushed downward by the driving tool 7 and penetrates both the base 61 and the attachment 62. 63. The base 61 and the attachment 62 are clamped from above and below by the head pressing portion 3 and the engaging portion 4, and the attachment 62 is fixed on the base 61. Next, the fixture of the present application is a driving tool. 7 shows a process in which the base plate 61 and the attachment object 62 are disassembled by passing through the hole 63 by being further pressed downward by 7. FIG. A shows a state before the fixing device is attached, the guide portion 5 of the fixing device is directed to the edge of the hole 63, and the pressurization provided at the tip of the driving device 7 on the driving surface 14 of the upper surface of the connecting portion 13. The state where the pressing surface 711 on the lower surface of the portion 71 is combined is shown. When the driving tool 7 is pressed in the driving direction, that is, in the direction of the arrow A81, the guide portion 5 slides on the edge of the hole 63, and the leg 12 (1) is a hole that narrows in the direction of the arrow B82 from the left and right. Slide into 63.

  FIG. B shows a state in which the leg-shaped body 12 (1) is slid into the hole 63. When this is further pressed downward, the engaging portion 4 provided at the tip of the leg-shaped body 12 (1) is pushed out of the hole 63 and opens outward. The arm-like body 11 (1) is pushed into the hole 63, and the outer end of the head pressing portion 3 is warped upward and the arm-like body 11 (1) is moved toward the central axis of the present fixing tool. The upper part of the main body is deformed so as to sag. FIG. C shows a state in which the outer side of the head pressing portion 3 is warped upward, and the inner end portion of the head pressing portion 3 sinks into the window 72 of the driving tool 7 as described above. It is possible to transform into. Next, as shown in FIG. D, after the engaging portion 4 is opened outside the hole 63, the shape of the head pressing portion 3 deformed so as to sag is restored, and the entire body trunk portion 1 is Is pulled back in the direction of arrow C83. The driving tool 7 is removed.

  Thereby, the base 61 and the attachment 62 are sandwiched from above and below by the head pressing portion 3 and the engaging portion 4, and the attachment 62 is fixed on the base 61. The pressing part 2 provided outside the arm-like body 11 (1) and the leg-like body 12 (1) presses the wall surface of the hole 63 of the base 61 and the attachment 62, and stabilizes the positional relationship between the two. As shown in FIG. E, when the pressing portion 71 is directed to the driving surface 14 on the upper surface of the connecting portion 13 and is pressed again in the driving direction, that is, in the direction of the arrow A81, the outer end portion of the head pressing portion 3 faces upward. Then, the arm member 11 (1) is warped and deformed so as to sag toward the central axis of the fixture, and slides into the hole 63. By further applying pressure, the fixture of the present application passes through the hole 63 and is detached, and the base 61 and the attachment 62 are disassembled. Since the fixture has the above-described configuration and operation, the configuration is simple, the manufacturing is easy, and the manufacturing cost is low. In addition, since the structure is simple, small products can be easily manufactured and can be used in precision machines. It is a fixture that can be easily assembled and disassembled and contributes to the reuse of parts.

  FIG. 4 is a perspective view of the second embodiment. This embodiment is an improved invention of Japanese Patent No. 3,746,781. The difference between the first embodiment and the present embodiment is that the shape of the arm 11 (1) is curved at the tip, and the elasticity of the arm 11 (1) becomes soft and the main body The width | variety which pulls back the main body trunk | drum 1 at the time of driving the trunk | drum 1 in the hole 63 becomes large. Similarly, the length of the engaging portion 4 is also longer than the overall size, and the elasticity of holding and pressing the base 61 and the attachment 62 is increased as compared with the first embodiment. This is an effective shape when it is desired to absorb vibration, when it is necessary to softly press down, or when the total thickness of the base 61 and the attached object is a relatively small value.

FIG. 5 is a perspective view of the third embodiment. The difference between the first embodiment and the present embodiment is that the ratio of the length of the arm-like body 11 (1) and the leg-like body 12 (1) is short in the whole fixture. In FIG. A, two connecting portions 13 (1) are provided in the main body barrel 1, and in FIG. B, the connecting portions 13 (1) are rectangular and have a certain area, so that the arm-like body 11 (1 ) And the length of the leg-shaped body 12 (1). The length of the arm-like body 11 (1) and the leg-like body 12 (1) is determined depending on how the connecting portion 13 (1) is set, and thereby the lateral elasticity, that is, the pressure of the pressing portion 2 is adjusted. it can. If flexible elasticity is required, the arm-like body 11 (1) and the leg-like body 12 (1) are lengthened. If strong elasticity is required, the arm-like body 11 (1) and the leg-like body 12 (1). The required characteristics can be created by shortening the length. In FIG. B, the shape of the hole B631 (63) is a cruciform shape, but the hole in one of the straight portions is a shape suitable for inserting the main body body 1 and is a transverse hole perpendicular to this. Is for driving with the driving tool 7 in FIG. When the hole is straight, it is not always necessary to have a cross shape as shown in the figure, and it is sufficient that the hole has a width that allows the main body body 1 to be inserted. As long as the driving tool 7 can be driven downward toward the driving surface 14 on the upper surface of the connecting portion 13, the entire rod-shaped body can be used regardless of the cross-sectional shape.

  6 is a perspective view of Example 4. In the second embodiment shown in FIG. 4, the number of arms 11 (1) and legs 12 (1) is increased. In the figure, the number of arm-like bodies 11 (1) and leg-like bodies 12 (1) is four, but this number is a realistic number in the range of about 3 to 8, and can be freely set. It is not necessary to make the numbers of the arm-like bodies 11 (1) and the leg-like bodies 12 (1) uniform, and the numbers can be set to unlimited. By increasing the number of arm-like bodies 11 (1) and leg-like bodies 12 (1), it is possible to arrange the pressing direction in the lateral direction, that is, the direction of the pressure of the pressing portion 2 radially from the central axis of the fixture. It is possible to obtain a uniform restraining force in all directions against horizontal vibration. In the present embodiment, the above-described effects can be obtained with a single fixture. However, even in the fixture of the second embodiment, the plurality of fixtures of the second embodiment are changed at different mounting angles with respect to the respective attachment objects. By using these, it is possible to obtain a four-way equal restraining force against horizontal vibration.

FIG. 7 is a perspective view of the fifth embodiment. The first embodiment having the X-shaped main body body 1 shown in FIGS. 1 and 2 is aligned and sandwiched between gripping tools 9 to form a single assembly. The gripping tool 9 has a parallel rod-like body as a clamping part 91 and is fixed by a clamping base 92. A fixed number of fixtures are inserted and aligned so as to sandwich the side surface of the X-shaped main body body 1 between the two rod-shaped bodies that are the sandwiching portions 91 to form one assembly. In addition to two parallel bars, the gripping tool 9 may have a box shape in which one side wall is cut out, or a hole may be made in the main body 1 of the fixing tool to insert a single bar. Is possible. Further, by sticking a thin synthetic resin film on the side surface 16 of the main body barrel 1 or the entire aligned state or applying a paint, the front and rear fixtures can be easily separated to form a rod shape. Also, the same effect as in the present embodiment can be obtained.

  In use, the fixing tool is pushed away from the direction indicated by the arrow D84, that is, away from the holding base 92, and is driven by the driving tool 7 in the direction of the arrow E85, that is, toward the driving position. In this figure, the driving tool 7 is provided with a projection 74, and the position is determined toward the recess 131 provided in the connecting portion 3 of the fixture of the present application. However, the projection 74 and the recess 131 are not necessarily required. . By using a plurality of fixtures as an assembly, the fixture of the present application can be driven continuously by a mechanical device, which can contribute to assembly of machinery. The fixture of the present application is used as a fixture for parts that require disassembly and reassembly of parts such as home appliances and automobiles, and places where it is desired to avoid loosening due to vibration, such as vehicles and mobile phones. Since the fixture of the present application is a general-purpose fixture that replaces screws and nails, it can be used in all places related to fixing of buildings and general machinery.

  FIG. 8 is a process diagram showing an example of a manufacturing process of the fixture. In this process diagram, in one series (A series), a wire, a metal band, and the like are cut to form a thin and short rod-like material 101 and are arranged in a comb shape. A process of forming the fixing tool into a divided 103 shape, and cutting the wire or metal band into a thin and short rod-like material 101 and arranging it in a comb shape in the other one series (B series) Then, after pressing this and forming the fixture of the present application into a divided shape 103, the shapes of the respective fasteners manufactured in the plurality of series (A series and B series) are divided. The process is shown in which parts 103 are combined, pressure-discharged by a welding machine 104 and welded. A plastic thin film is pasted at a close interval to form a rod-like continuous body 105. In addition to this manufacturing process, a process of press-molding a wire, metal band, etc. into a half-divided shape in a continuous state, b a process of combining and welding the left and right parts, and c a process of cutting thinly , The process of arranging the fixed fixtures in a continuous manner, sticking the plastic thin film, applying the paint, applying the paint, etc. Manufacture is possible by a plurality of different manufacturing processes, such as a process of welding and arranging them after integration.

1 is a perspective view of Example 1. FIG. FIG. 3 is a first operation diagram of the first embodiment. FIG. 6 is a second operation diagram of the first embodiment. 6 is a perspective view of Example 2. FIG. 10 is a perspective view of Example 3. FIG. 10 is a perspective view of Example 4. FIG. 10 is a perspective view of Example 5. FIG. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body trunk | drum 101 Bar-shaped material 102 Press machine 103 Divided shape 104 Welding machine 105 Continuous body 11 Arm-shaped body 12 Leg-shaped body 13 Connection part 131 Concavity 14 Driving surface 15 Distortion eliminating part 2 Pressing part 3 Head pressing part 31 Covered Attachment surface 4 Engagement surface 41 Engagement surface 42 Engagement surface 42 Base of engagement surface 43 Tip 5 of engagement surface 6 Guide unit 6 Installation object 61 Base 62 Attachment object 63 Hole 7 Driving tool 71 Pressurization unit 711 Pressurization surface 72 Window 73 Driving tool guide 74 Projection 81 Arrow A
82 Arrow B
83 Arrow C
84 Arrow D
85 Arrow E
9 Grasping tool 91 Clamping part 92 Clamping base

Claims (1)

The base is integrally formed of a hard elastic body, and includes a main body barrel, a plurality of engaging portions provided at the lower end of the main body barrel, and a plurality of head pressing portions provided at the upper end of the main body barrel. Fixing that mounts the object to be mounted on it, provides a hole that vertically penetrates both the base and the object to be mounted, and squeezes it into the hole to hold and fix both together by the engaging part and the head pressing part. It is a tool, and is configured in an X shape, an H shape, or a ladder shape by cutting out the upper end central portion and the lower end central portion of the main body trunk portion, and is laterally arranged at the upper end portion and the lower end portion of the main body trunk portion. When the pressure is applied in the driving direction, the lower end of the main body bends and bends toward the central axis of the main body barrel so that it passes through the hole and fits into the hole. The lower end of the main body extends outward to engage with the back side of the base, and the base and the object to be removed. When the attachment is sandwiched and further pressed in the driving direction, the upper end of the main body barrel is bent toward the central axis of the main body barrel so that the hole can be removed and removed. A fixture characterized by being.

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