JP2006112530A - Resin spring, sliding mechanism using the same, and door stopper using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a novel resin spring having simple construction with high durability and stable elastic force, and to provide a sliding mechanism using the same and a door stopper using the same. <P>SOLUTION: The resin spring comprises a resin spring body press-molded into such a shape that a plurality of plate ends are connected to each other alternately in zigzag. The sliding mechanism uses the resin spring and the door stopper uses the sliding mechanism. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a resin spring having a novel shape made of a resin material, and further relates to a slide mechanism including the resin spring, a slider and a base, and a door stopper using the slide mechanism.

  As a so-called slide mechanism configured so that the slider can be expanded and contracted within a certain range by using the elastic motion of the spring, for example, a structure as shown in an exploded perspective view of FIG. 1 can be cited. .

  As shown in FIG. 1, the slide mechanism 2 includes a spring 1 ′, a slider 21, and a base portion 22, and a claw portion provided on the slider 21 by inserting the slider 21 into the base portion 22 with the spring 1 ′ interposed therebetween. Assembly is performed by locking 211 to a locking hole 221 provided in the base.

  When a pressure is applied to the slider 21, the slide mechanism 2 moves to the base 22 side and the spring 1 ′ is compressed, and the applied pressure and the repulsive force of the spring 1 ′ are balanced. The slider 21 is configured to stop at a certain position.

  Note that the slide mechanism shown in this figure is only an example, that is, the slide mechanism that includes a spring, a slider, and a base, and the slider expands and contracts by using the elastic motion of expansion and contraction of the spring, is the simplest and has a range of applications. Even though it has an extremely wide mechanical structure, it is surely adopted in machines and devices that generally exist today, including various stoppers, push dispensers, knock-type ballpoint pens and switches.

  By the way, in such a slide mechanism, a metal coil spring is most often used as a spring for giving an elastic motion.

  However, metal coil springs have a problem that rust and corrosion occur depending on the use conditions.

  In addition, metal coil springs are easily lost due to jumping or flying during assembly work, and positioning is difficult, resulting in poor workability and handling.

  In addition, sliders and base parts are usually made of resin materials. Therefore, when the used slide mechanism is discarded or recycled, the slide mechanism is used. It is necessary to disassemble and separate the spring and other members.

  In view of this point, recently, a so-called resin spring made of a resin such as a polyolefin resin or a fluorine resin has been developed (for example, Patent Documents 1 to 5).

JP-A-10-73138 Japanese Patent Laid-Open No. 11-270604 JP 2000-213581 A JP 2000-320591 A JP 2002-200443 A

  However, the synthetic resin coil spring described in Patent Document 1 and the resin coil spring described in Patent Document 2 are coil-shaped resin springs, and thus have a problem in that the structure and configuration become complicated and the manufacturing cost increases. .

  In addition, the plastic cylindrical spring described in Patent Document 3 is composed of a cylindrical portion and ring portions at both ends thereof, and the cylindrical portion is formed in a rhombic continuous net shape. When the compression force is applied in the length direction of the spring, the corners of the rhombus are deformed so that the angles change. Therefore, a very large deformation stress is repeatedly applied to the corners of the rhombus. In other words, there is a problem that breakage or so-called sag occurs at each corner of the rhombus.

  Further, the resin spring described in Patent Document 4 is a fluorine resin belt-like sheet that is bent in a zigzag shape with a predetermined bulge-like curvature along its longitudinal direction, and has an adjacent predetermined curvature. The side surfaces of the bent portions are formed so as to be close to or in contact with each other, and the bent portions having a predetermined curvature are configured to be elastically expandable and contractable by overheating and cooling. Since the shape has a predetermined bulge-shaped curvature along the longitudinal direction of the spring, there is a problem that it becomes bulky in the longitudinal direction, and a compression force is applied in the length direction of the spring. In this case, since the bulge-shaped curvature of each bent portion is deformed, a very large deformation stress is repeatedly applied to the bent portion. There is a problem that damaged or sag so-called occurs in the bending part.

  In addition, the spring body described in Patent Document 5 is a corrugated leaf spring in which a synthetic resin plate is bent many times, but when a force to compress in the length direction of the spring is applied, the angle of each bent portion is In order to deform so as to change, a very large deformation stress is repeatedly applied to the bent portion, and there is a problem that damage or so-called sag occurs in the bent portion.

  Therefore, as a result of intensive studies to solve such problems, the present inventor is a resin spring body, and the spring body is formed by molding a plurality of end portions of a plurality of plate-like bodies. The present invention has completed the resin spring according to the present invention, which is provided with a zigzag shape in which are alternately connected.

  That is, the present inventor gives a zigzag shape in which end portions of a plurality of plate-like bodies are alternately connected to each other by a mold forming to the resin material. They obtained the knowledge that a new resin spring that produces a repulsive force by bending in response to the compression force can be constructed.

  And this resin spring does not bend the resin sheet to give S-shape or zigzag shape, but the ends of the plurality of plate-like bodies are alternately connected to the resin material by mold molding. Since it is given a zigzag shape, corners with relatively high strength can be formed at each corner, and the angle of the angle between adjacent plate-like bodies when compressed is almost unchanged, Obtained knowledge that almost no deformation stress is applied to the corner, which is extremely durable, and that it is less likely to break or sag even after repeated compression and rebound, maintaining a stable elastic force. It was.

  The present invention has been completed based on the above knowledge, and has a novel resin spring, a slide mechanism, and a door stopper using the slide mechanism that have a simple structure, high durability, and stable elastic force. The purpose is to provide.

The resin spring of the present invention, which is a means for solving the above problems, is a resin spring body, and the ends of a plurality of plate-like bodies are alternately connected to the spring body by mold molding. A zigzag shape is provided.
Hereinafter, the resin spring of the present invention will be described in detail.

  The resin spring of the present invention is a resin spring body, and the resin material constituting the spring body is not particularly limited as long as it can give an arbitrary shape by mold molding, and generally A known synthetic resin called a plastic can be appropriately selected and used. Specifically, for example, polystyrene, polyvinyl alcohol, ABS resin, polyvinyl formal, AS resin (SAN), polyvinyl propylal, polyolefin, acetyl cellulose, Thermoplastic resins such as vinylene chloride resin, cellulose ether, vinyl acetate resin, methacrylic resin, polyamide (nylon), polyethylene terephthalate, polyacetal, silicon resin (silicone resin), polycarbonate and fluororesin, phenol resin, epoxy resin, Yurea resin, aniline tree Examples thereof include thermosetting resins such as fat, melamine resin, furan resin, diallyl phthalate resin, polyurethane, and unsaturated polyester resin.

  And the resin spring of this invention has the biggest characteristic to the point which provided the zigzag shape to which the edge part of the some plate-shaped body was connected alternately by the mold molding with respect to the said resin material.

  That is, a conventionally known resin spring (S spring or U spring) in which the resin material is formed into a sheet shape and then the resin sheet is bent into an S shape or a zigzag shape has a compressive force in the length direction of the spring. When this occurs, the bending portion is deformed so that the curvature and angle of the bending portion are changed. Therefore, a very large deformation stress is repeatedly applied to the bending portion, and the bending portion is damaged or so-called sag occurs. Problems arise.

  In this regard, when the resin spring of the present invention is compressed, the angle between the adjacent plate-like bodies hardly changes, and each plate-like body bends in response to the compression force, thereby causing a repulsive force. Therefore, almost no deformation stress is applied to the corner, and even if compression and repulsion are repeated, damage and sag are less likely to occur, and a stable elastic force is expressed. .

  That is, the resin spring of the present invention does not bend the resin sheet to give an S-shape or zigzag shape, but alternately connects the ends of a plurality of plate-like bodies to the resin material by mold molding. Since the formed zigzag shape is provided, corner portions having relatively high strength can be formed at each corner, and a resin spring having extremely high durability can be obtained.

  Therefore, in the resin spring of the present invention, in order to further improve the durability, it is preferable to provide a reinforcing portion having a larger bulk at the corner portion, that is, as the shape of the resin spring, a plurality of molds are formed by molding. It is preferable to provide a zigzag shape in which the end portions of the plate-like body are alternately connected via the reinforcing portions.

  Note that “mold molding” in the present invention is not a special technique, and a resin material is put into a mold such as a mold or a wooden mold, and the resin material is applied by applying pressure or pressure and heat as desired. A technique for imparting a shape corresponding to a mold to the mold, and a typical example of such a mold molding technique is press molding.

  By the way, the resin spring of the present invention produces a repulsive force by bending each plate-like body according to a compressive force, so that when the plate-like body exceeds a bendable limit, The body may be damaged.

  Therefore, in the present invention, it is preferable that the adjacent plate-like bodies are in contact with each other before the plate-like body exceeds the limit where the plate-like body can be bent. In this case, the adjacent plate-like bodies can support each other and damage of the plate-like bodies can be prevented.

  Here, in order to configure the adjacent plate-like bodies to come into contact with each other before the plate-like body exceeds the limit that can be bent, the angle between the adjacent plate-like bodies is set narrowly, and the adjacent It is achieved by bringing the matching plate-like bodies close to each other, but the setting (determination) of the angle is appropriately determined according to the material, strength, flexibility or use environment (temperature) of the resin spring, In general, it cannot be limited, and generally, the angle between the adjacent plate-like bodies may be set in a range of about 0.1 to 30 degrees, and further 0.5 to 20 degrees. It is preferable to set in the range of about, and it is more preferable to set in the range of about 1 to 10 degrees.

  If the angle between the adjacent plate-like bodies is set to be less than 0.1 degrees, when it is necessary to obtain a large expansion / contraction difference (distance) in the resin spring of the present invention, the number of plate-like bodies is relatively increased. It is not common because the length of the plate-like body becomes longer and the resin spring becomes larger and its use is limited. On the other hand, if the angle between adjacent plate-like bodies is set to 30 degrees or more, it is excessive. Since the degree of curvature of each plate-like body becomes large when compressed, it is not preferable because the plate-like body may be damaged.

  Next, the slide mechanism of the present invention will be described in detail.

  The slide mechanism of the present invention uses the resin spring of the present invention, and includes at least the resin spring, a slider, and a base, and the slider can be expanded and contracted within a certain range by utilizing the elastic motion of the spring. It is comprised as follows.

  The slide mechanism of the present invention is applicable to machines and devices that are generally present, including various stoppers, push dispensers, knock-type ballpoint pens, switches, etc., except that the resin spring of the present invention is used. Since this is the same as a conventionally known slide mechanism using a metal spring such as a coil spring, it can be applied in various fields as an alternative to a conventionally known slide mechanism.

  Therefore, the shape and size of the slide mechanism of the present invention may be determined as appropriate according to the mechanical structure to which the slide mechanism is applied, and is not particularly limited.

  Further, the material constituting the slider and the base in the slide mechanism of the present invention is not particularly limited, and may be formed in an arbitrary shape using a known material such as resin, metal or wood. However, in order to facilitate the disposal and recycling after use, it is preferable to use the same resin material as the resin spring of the present invention.

  In particular, in the slide mechanism of the present invention, it is preferable that the resin spring and the slider or the resin spring and the base are formed of the same resin material. With this configuration, the resin spring and the slider or the resin spring and the base are integrated. The manufacturing process can be simplified and the number of parts can be reduced, the cost of the slide mechanism of the present invention can be reduced, and the assembly of the slide mechanism is very easy. It will be easy.

  Next, the door stopper of the present invention will be described in detail.

  The door stopper of the present invention is characterized by using the slide mechanism of the present invention, and is used in combination with a locking member that can be locked to the slide mechanism.

  That is, the door stopper of the present invention can be used as a simple stopper when the door is closed by locking and releasing the sliding mechanism and the locking member according to opening and closing of the door such as a sliding door, door or window. Or the open state of a fixed space | interval is maintained at the said door.

  The resin spring of the present invention is a novel resin spring having the above-described configuration, having a simple structure, high durability, and obtaining a stable elastic force.

  That is, when the resin spring of the present invention is compressed by applying a zigzag shape in which the ends of a plurality of plate-like bodies are alternately connected to the resin material by molding, It is a novel resin spring that produces a repulsive force by bending the shape according to the compression force.

  When this resin spring is compressed, the angle between the adjacent plate-like bodies is hardly changed, so that almost no deformation stress is applied to the corner portion, and the compression / repulsion is thereby reduced. Even if it is repeated, breakage and sag are less likely to occur, and a stable elastic force is expressed.

  In particular, this is a book in which a resin sheet is not bent to give an S-shape or a zigzag shape, but a zigzag shape in which ends of a plurality of plate-like bodies are alternately connected to a resin material by press molding. Since the resin spring of the invention can form corner portions having relatively high strength at each corner, it becomes a resin spring having extremely high durability.

  In addition, the slide mechanism of the present invention uses the resin spring of the present invention, and can be manufactured at a low cost by simplifying the manufacturing process and reducing the number of parts, and is excellent in disposal and recycling. It can be suitably applied in various fields as an alternative to the slide mechanism existing in many mechanical structures.

  Furthermore, the door stopper according to the present invention uses the slide mechanism according to the present invention, which can simplify the manufacturing process and reduce the cost by reducing the number of parts, and is excellent in disposal and recycling. Is

  Examples of the present invention will be described below, but the present invention is not limited to these examples.

  FIG. 2 is a schematic diagram showing the resin spring 1 according to the first embodiment of the present invention. The resin spring 1 is a resin spring body. A plurality of molds are formed on the spring body by molding. A zigzag shape in which end portions of the plate-like body 11 are alternately connected is provided.

  As shown in the enlarged sectional view of FIG. 2, the resin spring 1 in the present embodiment is configured such that the ends of the plurality of plate-like bodies 11 are alternately connected in a zigzag manner to the resin material by molding. Therefore, the corner portion 12 having high durability can be formed at each corner, and the durability becomes very high.

  Further, as shown in the enlarged sectional view of FIG. 3, the resin spring 1 in the present embodiment, when being compressed, has an angle θ between the adjacent plate-like bodies 11 that is almost unchanged, while the angle θ between the adjacent plate-like bodies 11 is hardly changed. Since the body 11 generates a repulsive force by bending in accordance with the compressive force, almost no deformation stress is applied to the corner portion 12, and even if it is repeatedly compressed and repelled, it is damaged. Sagging is unlikely to occur and a stable elastic force is expressed.

  Furthermore, as shown in the perspective view of FIG. 3, in the resin spring 1 of the present embodiment, the adjacent plate-like bodies 11 are in contact with each other before the plate-like bodies exceed the limit that can be bent. The angle θ sandwiched between the plate-like bodies 11 is set. With this configuration, even when the plates 11 are excessively compressed, the adjacent plate-like bodies 11 support each other, and the resin spring 1 This prevents the damage of the machine.

  At this time, the angle θ between the adjacent plate-like bodies may be determined as appropriate according to the material, strength, flexibility, and the like of the resin spring 1. What is necessary is just to set the angle (theta) of the angle pinched | interposed by a plate-shaped object to the range of about 0.1-30 degree | times, and also it is preferable to set to the range of about 0.5-20 degree | times, especially 1-10 degree | times. It is more preferable to set it within a range.

  FIG. 4 is a schematic view showing a resin spring 1 according to the second embodiment of the present invention. The resin spring 1 is a resin spring body. A plurality of molds are formed on the spring body by molding. A shape in which the end portions of the plate-like body 11 are alternately connected in a zigzag manner through the reinforcing portions 13 is given.

  That is, as shown in the enlarged sectional view of FIG. 4, the resin spring 1 in this example is the same as that in Example 1 except that the reinforcing portions 13 are provided at the connection points of the plurality of plate-like bodies 11. The durability is further improved.

  FIG. 5A is a schematic view showing the resin spring 1 of the present invention according to the third embodiment. The resin spring 1 is a resin spring body, and the spring body is subjected to press molding. A shape in which ends of the plurality of plate-like bodies 11 are alternately connected in a zigzag shape is provided, and a hole 14 is provided in the center of each of the square plate-like bodies 11.

  That is, the resin spring 1 in the present embodiment is configured such that through holes are formed from the upper surface to the lower surface of the resin spring 1 by providing the holes 14 in the respective plate-like bodies 11. As shown in FIG. 5 (b), the resin spring 1 can be supported by passing a rod-like body 4 (support rod) such as a shaft through the through hole.

Comparative example

  FIG. 6 is a schematic view showing a resin spring 1 ′ according to a comparative example. This resin spring 1 ′ is provided with a zigzag shape by bending a resin sheet 15.

  That is, since the resin spring 1 ′ according to this comparative example is provided with a zigzag shape by bending the resin sheet 15, the thickness of each bending point is almost the same as the thickness of the resin sheet 15.

  Then, as shown in FIG. 6B, the resin spring 1 ′ according to this comparative example has an angle X of each bent portion x (x () when a compression force is applied in the length direction of the resin spring 1 ′. Since the deformation is performed so that X> x), a very large deformation stress is repeatedly applied to the bent portion, and breakage or so-called sag easily occurs in the bent portion.

  FIG. 7 is a schematic diagram showing the slide mechanism 2 of the present invention according to the fourth embodiment. The slide mechanism 2 includes the resin spring 1, the slider 21, and the base portion 22 of the present invention, and performs the elastic motion of the resin spring 1. The slider 21 is configured so that it can be expanded and contracted within a certain range. As shown in the sectional view of FIG. 8, the slider 21 is attached to the base portion 22 while the resin spring 1 is interposed therebetween. It is assembled by inserting and locking the claw portion 211a provided on the slider 21 in the locking hole 221a provided on the base portion.

  Then, as shown in the cross-sectional view of FIG. 8, when the slide mechanism 2 applies pressure to the slider 21, the resin spring 1 is compressed and the slider 21 moves to the base portion 22 side. The slider 21 is configured to stop at a position where the pressure and the repulsive force of the resin spring 1 are balanced.

  As shown in the sectional view of FIG. 8, in the slide mechanism 2, when further pressure is applied, the claw portion 211b finally provided on the slider 21 is engaged with the locking hole 221b provided on the base portion. The movement of the slider 21 is restricted at the locking position, and the movement restricted state of the slider 21 is released by operating a release button 212 provided on the slider 21. It is configured.

  Here, the material constituting the slider 21 and the main body case 22 in the slide mechanism 2 according to the present embodiment is not particularly limited, and any known material such as resin, metal, or wood may be used. Although it may be formed in a shape, it is preferable to use the same resin material as the resin spring 1 in order to facilitate disposal and recycling after use.

  FIG. 9 is an exploded perspective view showing the slide mechanism 2 of the present invention according to the fifth embodiment. The slide mechanism 2 includes the resin spring 1, the slider 21, and the main body case 22 of the present invention. And the slider 21 are integrally formed, and the manufacturing process can be simplified and the number of parts can be reduced, and the cost can be reduced.

  FIG. 10 is a schematic view showing the door stopper 3 according to the sixth embodiment of the present invention. The slide mechanism 2 as described in the third and fourth embodiments is provided on the upper part of the sliding door 5, and the upper part of the door frame 51. It is used in combination with the provided locking member 31.

  That is, the sliding mechanism 2 and the locking member 31 are locked and released according to the opening and closing of the sliding door, and used as a simple stopper when the door is closed, or the door is kept in an open state at a constant interval. It is something to do.

FIG. 1 is an exploded perspective view showing a conventionally known slide mechanism. FIG. 2 is a schematic diagram illustrating the resin spring according to the first embodiment of the present invention. FIG. 3 is a schematic diagram illustrating a state in which the resin spring according to the first embodiment of the present invention is compressed. FIG. 4 is a schematic diagram illustrating a resin spring according to the second embodiment of the present invention. FIG. 5 is a schematic diagram illustrating the resin spring according to the third embodiment of the present invention. FIG. 6 is a schematic diagram illustrating a resin spring according to a comparative example. FIG. 7 is an exploded perspective view showing the slide mechanism of the present invention according to the fourth embodiment. FIG. 8 is a cross-sectional view illustrating the slide mechanism of the present invention according to the fourth embodiment. FIG. 9 is an exploded perspective view showing the slide mechanism of the present invention according to the fifth embodiment. FIG. 10 is a schematic diagram illustrating the door stopper of the present invention according to the sixth embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Resin spring 2 Slide mechanism 3 Stopper 4 Rod-shaped body 5 Sliding door

Claims (8)

  A resin spring, wherein the spring body is provided with a zigzag shape in which ends of a plurality of plate-like bodies are alternately connected by molding.   The resin spring according to claim 1, wherein a zigzag shape is provided in which ends of the plurality of plate-like bodies are alternately connected via reinforcing portions.   The resin spring according to claim 1 or 2, wherein adjacent plate-shaped bodies contact each other before the plate-shaped body exceeds a limit that allows the plate-shaped body to be bent.   The resin spring according to any one of claims 1 to 3, wherein an angle between adjacent plate-like bodies is in a range of 0.1 to 30 degrees.   5. A slide mechanism using the resin spring according to claim 1, wherein the slide mechanism includes at least the resin spring, a slider, and a base.   The slide mechanism according to claim 5, wherein the resin spring, the slider, and the base are formed of the same resin material.   The slide mechanism according to claim 5 or 6, wherein the resin spring and the slider or the resin spring and the base are integrally formed. A door stopper using the slide mechanism according to any one of claims 5 to 7.