JP2019027481A - Finger protector for chain - Google Patents

Abstract

To provide a finger protector for a chain capable of being installed to an existing chain in a short time by a simple operation.SOLUTION: A protector 100 is fitted in the inner space of individual chain rings 162 configuring a chain 160. The protector 100 is a round corner rectangular having long sides along parallel parts 164 and 166 of the chain ring 162, and is equipped with a male component 102 and a female component 130 fitted respectively from one side and the other side with respect to the inner space. The male component 102 has claws 116 and 118 projecting out from a surface opposite to the female component 130, and the female component 130 has fitting holes 134 and 136 in which the claws 116 and 118 are fitted, on a surface opposite to the male component 102. The male component 102 and the female component 130 make the claws 116 and 118 fit with the fitting holes 134 and 136, thereby gripping the chain ring 162 at their edges.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a chain finger protector that prevents a finger or the like from being caught in a chain gap.

  Chains that are directly gripped by humans, such as chains for playground equipment used for swings and suspension rings, are routinely present. In the chain, a plurality of chain rings are alternately connected in series, and the adjacent chain rings move in the inner space of each chain ring. Therefore, an object may be caught in the chain, and there is a risk that the child intentionally puts a finger when used for play equipment. Therefore, for example, a protective device for protecting a child's finger or the like, such as a gap closing member described in Patent Document 1, has been proposed by each company.

Japanese Patent No. 4422511

  However, although the gap closing member of Patent Document 1 can be attached to an existing chain on site, it is necessary to prepare an adhesive and a corresponding curing time is also required.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a chain finger protector that can be attached to an existing chain by a simple operation in a short time.

  In order to solve the above problems, a typical structure of the chain finger protector according to the present invention is a chain finger protector that fits into the inner space of each chain ring constituting the chain, The hand protector has a rounded rectangular shape having a long side along the parallel part of the chain ring, and includes a male part and a female part fitted from one side and the other side with respect to the inner space, The male part has a claw protruding from the surface facing the female part, the female part has a fitting hole into which the claw is fitted to the surface facing the male part, and the male part and the female part are The chain ring is gripped by the edge of each other by fitting the fitting hole.

  According to the said structure, it can mount | wear to the existing chain | strand for a short time by the easy operation | work which only engage | inserts a male part and a female part from the both sides of a chain ring. In particular, since the whole is a rounded rectangle, it is possible to efficiently close the inner space of the chain ring. Moreover, since the nail | claw and the fitting hole are provided in the mutually opposing surface of a male component and a female component, it can also prevent removing by mischief.

  The chain finger protector may further include a hinge connecting the male part and the female part. With this configuration, the whole becomes one part, and handling becomes easier.

  The fitting hole may be in a state in which the inserted claw cannot be exposed to the outer surface of the female part. With this configuration, it is possible to prevent the removal by mischief more fully.

  The claw may be provided in two longitudinal ranges along each of the long sides of the rounded rectangle. If it is a wall-like claw protruding from the longitudinal range, the fitting length is long and the rigidity is high, and it is possible to more fully fit the male part and the female part.

  It is preferable that the outer surfaces of the male parts and female parts have a curved surface that swells at the center and smoothly continues from there to the chain ring. Since the outer surface of the male part and the female part may be gripped by a person together with the chain, it is possible to reduce the feeling of foreign matter and make the chain easier to grip by forming a smooth curved surface.

  The male and female parts described above may have non-slip irregularities formed on the outer surface. By forming the unevenness, it is possible to make the chain difficult to slip when a person grips the chain.

  According to the present invention, it is possible to provide a chain finger protector that can be attached to an existing chain with a simple operation in a short time.

It is the figure which showed the finger protector for chains concerning 1st Embodiment of this invention. It is the figure which showed a mode that the finger protector for chain | strands was attached to a chain | strand. It is the figure which showed the finger protector for chains concerning 2nd Embodiment of this invention. It is the figure which showed a mode that the finger protector for chain | strands was attached to a chain | strand. It is the figure which showed the finger protector for chains concerning 3rd Embodiment of this invention. FIG. 6 is a diagram illustrating a process of attaching the chain finger protector of FIG. 5 to the chain. It is the figure which showed the finger protector for chains concerning 4th Embodiment of this invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

(First embodiment)
FIG. 1 is a view showing a chain finger protector (hereinafter, protector 100) according to a first embodiment of the present invention. 1 (a) to 1 (e) are four views of the male part 102 constituting one side of the protector 100, and FIGS. 1 (f) to 1 (j) illustrate the other side of the protector 100. FIG. It is a 4th page figure of female part 130 which constitutes. The protective device 100 composed of the male part 102 and the female part 130 is used by being inserted into the inner space of the chain ring 162 as shown in FIG. Is prevented from being caught.

  FIG. 1A is a plan view of the male part 102 and shows the outer surface 104 of the male part 102. Both the male part 102 and the female part 130 described later are made of a resin material. The male part 102 is formed in a rounded rectangle as a whole. The long sides 106 and 108 are along the parallel portions 164 and 166 of the chain ring 162 (see FIG. 2A), and grip the parallel portions 164 and 166. The rounded portions 110 and 112 are portions that avoid the adjacent chain rings 168 and 170 (see FIG. 2B), and draw a smooth arc so that the adjacent chain rings 168 and 170 move smoothly.

  FIG.1 (b) is AA sectional drawing of the male component 102 of Fig.1 (a). The male part 102 has claws 116 and 118 on the bottom surface 114 facing the female part 130 (see FIG. 2A). Two tabs 116 and 118 are provided at both ends of the bottom surface 114 in the longitudinal direction of the male part 102. The claws 116 and 118 protrude vertically from the bottom surface 114 and have barbs 120 and 122 facing outward at the tips. There is no limitation on the direction in which the barbs 120 and 122 are provided. For example, the barbs 120 and 122 can be directed inward.

  FIG.1 (c) is a front view of the male component 102 of Fig.1 (a). The male part 102 holds the chain ring 162 (see FIG. 2A) in an inclined region from the long sides 106 and 108 to the bottom surface 114. Round grooves 124 and 126 are also provided in a part of this region. A welded portion may protrude from the surface of the chain ring 162, and the round grooves 124 and 126 are provided to avoid the welded portion of the chain ring 162. The outer surface 104 is a rounded curved surface as a whole so that the center swells and becomes thinner toward the long sides 106 and 108 therefrom. With this configuration, when attached to the chain ring 162, a curved surface that is smoothly continuous toward the chain ring 162 is formed, and a person can easily grip the chain 160.

  FIG.1 (d) is a right view of the male component 102 of FIG.1 (c). Also from FIG. 1D, it can be confirmed that the round groove 124 is provided in the vicinity of the bottom surface 114 and that the outer surface 104 is rounded as a whole.

  FIG.1 (e) is a bottom view of the male component 102 of Fig.1 (a). The bottom surface 114 is flat and comes into surface contact with a bottom surface 146 (see FIG. 1 (j)) of a female component 130 described later. As described above, the claws 116 and 118 are provided at both ends of the bottom surface 114 in the longitudinal direction. Round grooves 124 and 126 are provided on both sides of the bottom surface 114 in the short direction.

  FIG. 1 (f) is a plan view of the female part 130 and shows the outer surface 132 of the female part 130. The female part 130 has a structure that is paired with the male part 102 described above except for the fitting holes 134 and 136. The female part 130 is also a rounded rectangle, the long sides 138, 140 grip it along the parallel portions 164, 166 of the chain ring 162, and the rounded portions 142, 144 draw an arc.

  FIG.1 (g) is BB sectional drawing of the female component 130 of FIG.1 (f). The female part 130 has fitting holes 134 and 136 at both ends in the longitudinal direction as parts where the claws 116 and 118 of the male part 102 are fitted. The fitting holes 134 and 136 penetrate from the bottom surface 146 side of the female part 130 to the outer surface 132. Bridges 148, 150 are formed on the rounded portions 142, 144 side of the fitting holes 134, 136, and the barbs 120, 122 of the claws 116, 118 in FIG.

  FIG. 1 (h) is a front view of the female part 130 of FIG. 1 (f). The female part 130 is also provided with round grooves 152 and 154 that hold the chain ring 162 (see FIG. 2A) in an inclined region from the long sides 138 and 140 to the bottom surface 146 and avoid the welded portion of the chain ring 162. It has been. The outer surface 132 of the female part 130 is also a curved surface that is generally rounded so that the center swells and becomes thinner toward the long sides 138 and 140 therefrom.

  FIG. 1 (i) is a right side view of the female part 130 of FIG. 1 (h). Also from FIG. 1I, it can be confirmed that the round groove 152 is provided in the vicinity of the bottom surface 146 and that the outer surface 132 is rounded as a whole.

  FIG. 1J is a bottom view of the female part 130 of FIG. The bottom surface 146 is flat and is in surface contact with the bottom surface 114 of the male component 102. As described above, the fitting holes 134 and 136 are provided at both ends of the bottom surface 146 in the longitudinal direction, and the round grooves 152 and 154 are provided on both sides of the bottom surface 146 in the short direction.

  FIG. 2 is a diagram showing a state in which the chain finger protector (protector 100) is attached to the chain 160. FIG. 2A shows a state before the male part 102 and the female part 130 are fitted, and FIG. 2B shows a state after the fitting. As shown in FIG. 2A, the male part 102 and the female part 130 are attached to the internal space of each chain ring 162 constituting the chain 160 by fitting from one side and the other side. Then, the claws 116 and 118 and the fitting holes 134 and 136 are inserted and fitted. Thereby, as shown in FIG. 2B, the male part 102 and the female part 130 are inclined regions from the long side (long side 106, etc.) to the bottom surface (plane 114, etc.) of the chain ring 162. The parallel parts 164 and 166 are gripped from both sides, and the mounting of the protective device 100 is completed.

  As described above, the protective device 100 can be attached to the existing chain 160 in a short time by a simple operation of fitting the male part 102 and the female part 130 from both sides of the chain ring 162. In particular, since the entire male part 102 and female part 130 are rounded rectangles, the inner space of the chain ring 162 can be efficiently blocked. Further, since the claws 116 and 118 and the fitting holes 134 and 136 are provided on the bottom surface 114 and the bottom surface 146 (see FIG. 1 (j)) of the male component 102 and the female component 130 facing each other, they may be removed by mischief. Can be prevented. If the protector 100 is removed from the chain ring 162, it is necessary to bend the claws 116 and 118 with a predetermined jig, and it is difficult to release the male part 102 and the female part 130 by a human hand. ing. Further, the claws 116 and 118 can be made thicker to increase the rigidity, thereby making it difficult to release them with the hand of a child.

  As described above, the outer surface 104 (see FIG. 1C) of the male part 102 and the outer surface 132 of the female part 130 form a curved surface that swells at the center and smoothly continues from there to the chain ring 162. ing. As a result, when the protector 100 is held by a person together with the chain 160, the feeling of foreign matter can be reduced by a smooth curved surface, and the chain 160 can be more easily gripped. Moreover, since the said protective device 100 can be attached for every chain ring 162, it is also possible to attach only to the arbitrary ranges of the chain | strand 160, for example, only the range which touches a human hand.

  With the protector 100, the male part 102 and the female part 130 can be attached simply by fitting them from both sides of the chain ring 162, so that the construction cost can be reduced. Also, in terms of manufacturing cost, the protective device 100 is formed only from a resin material, and thus is much cheaper than pressing and insert molding in the case of using a metal material.

  In addition, since the said protective device 100 is formed from a resin material, it can color-code using a coloring agent. Therefore, it is possible to form a bright and conspicuous color. It is also possible to mold with a phosphorescent material. By these, for example, it is possible to call attention to people by using colors and materials that stand out even in the rain or at night, such as chains for stopping cars or prohibiting entry.

(Second Embodiment)
FIG. 3 is a view showing a chain finger protector (hereinafter, protector 200) according to the second embodiment of the present invention. In the following embodiments, the configurations of the male part 202 and the female part 230 are substantially the same as the male part 102 and the female part 130 of the first embodiment, except that only characteristic parts such as claws and fitting holes are different. It is. Therefore, the same components as those already described are denoted by the same reference numerals and the description thereof is omitted. In addition, components having the same names as those already described have the same functions as those in the first embodiment unless otherwise specified, even if different reference numerals are given.

  3 (a) to 3 (e) are four views of the male part 202 of the protector 200, and FIGS. 3 (f) to 1 (j) are four views of the female part 230 of the protector 200. FIG. is there. FIGS. 3A to 3J are all shown from the same direction corresponding to FIGS. 1A to 1J. This embodiment is different from the protective device 100 of the first embodiment in the structure of the claws 216 and 218 and the fitting holes 234 and 236.

  FIG.3 (b) is CC sectional drawing of the male component 202 of Fig.3 (a). The claws 216 and 218 have barbs 220 and 222 provided at both ends in the longitudinal direction of the bottom surface 114 and facing outward. The claws 216 and 218 are slightly shorter in length than the claws 116 and 118 in FIG. 3 (c) to 3 (e), the configuration is the same as that of the male part 202 of FIGS. 1 (c) to 1 (e) except that the claws 216 and 218 are short.

  FIG. 3F is a plan view of the female part 230 and shows the outer surface 232 of the female part 230. Unlike the female part 130 of FIG. 1 (f), the female part 230 does not have fitting holes 234 and 236 (see FIG. 3 (g)) penetrating to the outer surface 232 side.

  FIG.3 (g) is DD sectional drawing of the female component 230 of FIG.3 (f). The fitting holes 234 and 236 do not penetrate to the outer surface 232 side, but penetrate only the side surfaces of the rounded corner portions 142 and 144 of the bridges 248 and 250. FIG. 3 (h) is a front view of the female part 230 of FIG. 3 (f). The bridges 248 and 250 are narrower than the bridges 148 and 150 shown in FIG. 3 (i) to 3 (j), the configuration is the same as that of the female part 130 of FIGS. 1 (i) to 1 (j) except for the fitting holes 234 and 236 and the bridges 248 and 250.

  FIG. 4 is a diagram showing a state in which the chain finger protector (protector 200) is attached to the chain. FIG. 4A shows a state before the male part 202 and the female part 230 are fitted together, and FIG. 4B shows a state after the fitting. As shown in FIG. 4A, the male part 202 and the female part 230 are also attached to the chain ring 162 by inserting the claws 216 and 218 and the fitting holes 234 and 236 into each other. Thereby, as shown in FIG.4 (b), attachment of the protector 200 is completed.

  As shown in FIG. 4A, the fitting holes 234 and 236 penetrate only the side surfaces of the rounded corner portions 142 and 144 of the female part 230. That is, since the fitting holes 234 and 236 do not penetrate the outer surface 232 side (see FIG. 3F), the claws 216 and 218 are not exposed to the outer surface 232. Therefore, after being attached to the chain ring 162 as shown in FIG. 4B, the adjacent chain rings 168 and 170 interfere to make it difficult to reach the claws 216 and 218 from the outside. With this configuration, if the protector 200 is removed from the chain ring 162, it is necessary to prepare a jig with a bent tip, and it is extremely difficult to release it with the hand of a child. Therefore, the protective device 200 can be more efficiently prevented from being removed by mischief.

(Third embodiment)
FIG. 5 is a view showing a chain finger protector (protector 300) according to a third embodiment of the present invention. The protective device 300 is characterized in that a male part 302 and a female part 330 are connected by a hinge 380 to form one part as a whole. Further, the structures of the claws 316 and 318 and the fitting hole 334 are also different from the above embodiment.

  FIG. 5A is a plan view of the protector 300 and shows the outer surface 104 of the male part 302 and the outer surface 232 of the female part 330. The male part 302 and the female part 330 are both rounded rectangles, and one side of each rounded part is connected by a hinge 380.

  FIG.5 (b) is EE sectional drawing of the female component 330 of Fig.5 (a). In FIG. 5B, claws 316 and 318 to be described later can be seen from the back male part 302 (see FIG. 5E) with respect to the front female part 330. The front female part 330 has one large fitting hole 334 as a part to which the claws 316 and 318 are fitted. The fitting hole 334 is provided with steps 348 and 350 in which the barbs 320 and 322 of the claws 316 and 318 are hooked, and the claws 316 and 318 are not exposed to the outside.

  FIG.5 (c) is a front view of the protective device 300 of Fig.5 (a). The hinge 380 forms a convex arch toward the bottom surfaces 114 and 146 of the male part 302 and the female part 330. The tab 316 of the male part 302 is provided in a longitudinal shape along the long side 106.

  FIG.5 (d) is a left view of the protective device 300 of FIG.5 (b). It can be confirmed that the female part 330 has substantially the same configuration as the female part 230 of FIG.

  FIG.5 (e) is a right view of the protective device 300 of FIG.5 (b). The male part 302 has a total of two claws 316 and 318 at both ends of the bottom surface 114 in the short direction (that is, along the long side 106). The barbs 320 and 322 of the claws 316 and 318 face outward. Except for the configuration of the claws 316 and 318, the male component 302 has substantially the same configuration as the male component 102 of FIG.

  FIG. 5F is a bottom view of the protective device 300 of FIG. The claws 316 and 318 are provided in two longitudinal ranges along the long sides 106 and 108 at both ends of the bottom surface 146 of the male component 302 in the short direction. The fitting hole 334 of the female part 330 is provided in a rectangular shape so that the claws 316 and 318 can be inserted over the main range of the bottom surface 146.

  FIG.5 (g) is FF sectional drawing of the protector 300 of Fig.5 (a). In the female part 330, a step 350 is provided in a long shape inside the fitting hole 334 corresponding to the claw 318.

  FIG. 6 is a diagram illustrating a process of attaching the chain finger protector (protector 300) of FIG. 5 to the chain. As shown in FIG. 6A, the protector 300 is inserted from the male part 302 side or the female part 330 side to the inner space of the chain ring 162 to the extent that it reaches the hinge 380. Next, as shown in FIG. 6B, the male part 302 and the female part 330 are twisted so that the direction of the male part 302 is along the chain ring 162, the hinge 380 is closed, and the claws 316 and 318 and the fitting hole 334 are fitted. . As a result, as shown in FIG. 6C, the male part 302 and the female part 330 are in a state in which the parallel parts 164 and 166 (see FIG. 6A) of the chain ring 162 are gripped from both sides. The installation of 300 is completed.

  The protective device 300 can fit the male part 302 and the female part 330 from both sides of the chain ring 162 simply by closing the hinge 380 after passing through the internal space of the chain ring 162. Therefore, the protective device 300 can be attached to the existing chain 160 in a short time by a very simple operation. Further, since the protective device 300 is formed as a single part by connecting the male part 302 and the female part 330 by the hinge 380, there is no risk of losing one part during handling, and handling is easier. become.

  As shown in FIG. 5C and the like, the claws 316 and 318 of the male component 302 of the present embodiment protrude from the longitudinal range in a wall shape and have a high rigidity because the length of the fitting is long. Therefore, according to the present embodiment, the male part 302 and the female part 330 can be more fully fitted.

  Further, the fitting holes 334 do not expose the fitted claws 316 and 318 to the outside. With this configuration, it is extremely difficult to release with the hand of a child. Therefore, the protective device 300 can be more efficiently prevented from being removed by mischief.

  As a modification of the female part, for example, in FIG. 5B, the fitting hole 334 is penetrated in the width direction (round grooves 152, 154 side) of the female part 330, and the steps 348, 350 are formed in a bridge-like structure. It is also possible to do. With this configuration, the claws 316 and 318 are exposed from the vicinity of the round grooves 152 and 154, but are not exposed on the outer surface 232. Moreover, after attaching to the chain ring 162, it becomes difficult to reach the claws 316 and 318 from the outside because the parallel portions 164 and 166 (see FIG. 6A) interfere with each other. Even in this configuration, when removing the protective device from the chain ring 162, it is necessary to prepare a jig with a bent tip, etc., so it is extremely difficult to release with a child's hand, and it is possible to efficiently prevent mischief. it can.

(Fourth embodiment)
FIG. 7 is a view showing a chain finger protector (hereinafter, protector 400) according to a fourth embodiment of the present invention. In the protector 400, a groove 404 is provided on the outer surface 104 of the male component 402, and a non-slip unevenness is formed on the outer surface 104. This groove portion can also be provided on the outer surface of the opposite female component not shown. By forming irregularities on the outer surfaces of the male part 402 and the female part (not shown), it is possible to make the chain 160 difficult to slip when a person grips the chain, and to make the chain 160 easier to handle.

  In addition, the groove part 404 is applicable to any protector of 1st Embodiment-3rd Embodiment demonstrated above. In addition, the hinge 380 of the third embodiment is also applicable to the protective device of the first embodiment or the second embodiment.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  INDUSTRIAL APPLICABILITY The present invention can be used for a chain finger protector that prevents fingers or the like from being caught in a chain gap.

DESCRIPTION OF SYMBOLS 100 ... Protective equipment of 1st Embodiment, 102 ... Male part of 1st Embodiment, 104 ... Outer surface of male part, 106, 108 ... Long side of male part, 110, 112 ... Rounded part of male part, 114 ... bottom surface of male part, 116, 118 ... claw of first embodiment, 120, 122 ... barb, 124, 126 ... round groove of male part, 130 ... female part of first embodiment, 132 ... of female part Outer surface, 134, 136 ... fitting hole of the first embodiment, 138, 140 ... long side of female part, 142, 144 ... rounded part of female part, 146 ... bottom face of female part, 148, 150 ... first Bridge of embodiment, 152, 154 ... round groove of female part, 160 ... chain, 162 ... chain ring, 164, 166 ... parallel part of chain ring, 168, 170 ... next chain ring, 200 ... of the second embodiment Protective equipment, 202 ... 2nd fruit Form of male parts, 216, 218 ... claw of the second embodiment, 220, 222 ... barb of the second embodiment, 230 ... female part of the second embodiment, 232 ... outer surface of the female part, 234, 236 ... fitting hole in the second embodiment, 248, 250 ... bridge in the second embodiment, 300 ... protector in the third embodiment, 302 ... male part in the third embodiment, 316, 318 ... in the third embodiment Claw, 320, 322 ... Barb of the third embodiment, 330 ... Female part of the third embodiment, 334 ... Fitting hole of the third embodiment, 348, 350 ... Step, 380 ... Hinge, 400 ... Fourth Protective device of embodiment, 402 ... male part of fourth embodiment, 404 ... groove

Claims (6)

A chain finger protector that fits into the inner space of the individual chain rings constituting the chain,
The chain finger protector is
It is a rounded rectangle having a long side along the parallel part of the chain ring, and includes a male part and a female part fitted from each of one side and the other side with respect to the inner space,
The male part has a claw protruding from a surface facing the female part,
The female part has a fitting hole provided on a surface facing the male part and into which the claw is fitted,
The male part and the female part hold the chain ring at the edge of each other by fitting the claw and the fitting hole, the chain finger protector.   The chain finger protector according to claim 1, further comprising a hinge that connects the male part and the female part.   The chain finger protector according to claim 1 or 2, wherein the fitting hole is in a state in which the inserted claw cannot be exposed to the outer surface of the female part.   4. The chain finger protector according to claim 1, wherein the claw is provided in two longitudinal ranges along each of the long sides of the rounded rectangle. 5.   5. The outer surface of the male part and the female part is formed with a curved surface that swells at the center and smoothly continues from there toward the chain ring. The chain finger protector as described.   The chain finger protector according to any one of claims 1 to 5, wherein the male part and the female part are provided with non-slip irregularities on an outer surface.

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