TWI396514B - Hidden zipper with the slider - Google Patents

Description

Concealed zipper slider

The present invention relates to a slider for a concealed zipper of a type in which the main body of the slider of the opening and closing device is not exposed to the outside when the zipper is closed. Moreover, it relates to a sliding member for a hidden zipper which has a strong transverse pulling force acting on the sliding member when the hidden zipper is closed, and can still perform smooth sliding operation.

Such concealed zippers are used more in women's clothing, and in recent years they have been used in other fields than clothing. For example, it is gradually being used in a seat of a car or a train.

The seat is covered on a cushion body that is integrally formed with respect to the frame in advance. In this case, the size of the seat cover is configured to be smaller than the outer dimensions of the cushion body, and the cushion body is covered in a compressed state, and the seat is formed by suppressing the occurrence of slack or deformation of the outer shape as much as possible.

Further, when seated, the load from the passenger is uniformly dispersed, and the cushion body is elastically deformed when the passenger is seated, but the seat cover is also deformed in accordance with the elastic deformation of the cushion body. Moreover, when the passenger leaves the seat, the cushion body will return to its original shape, and the seat cover will surely return to its original shape. The deformation of the seat is prevented by observing the deformation of the seat cover relative to the deformation of the cushion body.

The seat cover is usually made of natural leather or synthetic leather, or a laminated board. The laminated board is formed by laminating a skin layer, a thin elastic intermediate layer, and a back base fabric layer by lamination processing or the like. As the skin layer, a woven fabric having various structures or the like is used, and a thin elastic intermediate layer is a urethane foam sheet or the like. Further, a thin knitted fabric obtained by knitting or weaving with extremely fine lines is used as a back base fabric layer.

Usually, when the seat cover of the seat is made from the boards, the combination includes cutting a plurality of sheets according to the shape and sewing them into a three-dimensional shape. However, when the entire seat cover is made by sewing, there are many cases where the seat cover cannot be covered by the seat body of the seat having a complicated outer shape. Therefore, in the prior art, the unsewed portion is previously set in the seat cover, and after the seat cover is covered on the cushion body, the unsewed portion is sewn by hand sewing.

In the case where the final finishing work is completed by hand sewing, it is easy to make a difference in the quality of the finished product or the sewing time of the finished product due to the difference in the skill of the sewing worker. Therefore, in recent years, in order to eliminate the finishing work of hand sewing, a part of the sewing portion of the seat cover, for example, a zipper is used along the flange portion.

Further, as a zipper for a seat, in order to improve the design of the appearance, a hidden zipper in which the slider body is not exposed to the outside is gradually used. As a result of the zipper, the sewing machine can be used for all the sewing operations, and the previous problems caused by the difference in skill can be greatly improved, and the productivity can be improved by one step.

When the concealed zipper is used for a seat such as the above-described car, since the size of the seat cover is smaller than the outer shape of the cushion body, a strong lateral pulling force acts on the chain belt near the slider. As a result, the opposite side edge portions of the chain cloth are bent and fixed in a U shape, and in the case where a chain belt having a fastener element is attached along the curved end edge of the side edge portion, the relative chain belt acts. When the tension is strong, the chain teeth will become in a standing state due to the strong lateral pulling force. That is, the sprocket is in a posture in which the engaging head is placed upward and the chain cloth surface of the chain is raised at a right angle.

In addition, each of the fastener elements that are introduced into the inlet port while being subjected to a strong lateral pulling force in the vicinity of the introduction port of the slider is introduced into the slider from the inlet port that is raised at a substantially right angle to the chain fabric surface of the chain fabric. .

When the rear end portions of the element teeth on the opposite side of the meshing head are mounted on the upper surface of the slider lower blade, they can be slightly tilted in the direction of the horizontal state. However, since the pouring is small, the sprocket is often introduced into the slider from the introduction port in the standing state. As a result, the fastener element is caught in the chain guide path of the guide chain cloth, so that the slider cannot slide.

If the slider is barely slid in this state, the sprocket that is subjected to the transverse pulling force is broken. And, in the worst case, it is possible to break the curved edge of the chain cloth. Further, in the case where the fastener element is introduced into the slider in a state in which the fastener element is not completely horizontal, when the zipper is closed, the fastener elements are not properly engaged with each other, resulting in a so-called broken state.

As a slider which can be used for a concealed zipper having such a strong lateral pulling force, the applicant of the present application has proposed a slider for a concealed zipper (refer to Patent Documents 1, 2) and the like. The concealed slide fastener includes a pair of fastener tapes that are bent and fixed in a U shape to the opposite side edges of the fastener fabric, and the fixed fastener elements are attached along the curved end edges of the side edge portions.

A slider for a concealed slide fastener described in Patent Document 1 is referred to as a first example of the present invention, and a perspective view of the slider is shown in FIG. As shown in Fig. 9, a pair of right and left first flanges 43, 44 having an inverted L-shaped cross section along each side edge are provided on the left and right side edges of the lower wing 42 of the slider 41. A guide post 45 having a substantially elliptical horizontal cross section is erected at a central portion of the front edge of the lower blade 42.

The wedge-shaped space formed between the upper plate portions 43a and 44a of the pair of first flanges 43 and 44 is provided with a rectangular region 46a and a wedge-shaped region 46b integrally formed on the upper surface of the guide post 45, and guided along the guide The second flange 46 protrudes outward in the circumferential direction of the column 45. Further, the height of the lower surface of the lower flange 46 of the second flange 46 from the inlet-side end portion is greater than the height of the lower surface of the lower surface of the blade 42 from the other regions, and the outer peripheral surface of the second flange 46 is formed with a taper angle. The tapered surface 46c is gradually increased toward the meshing opening side.

In the invention of Patent Document 1, the height of the upper ridge line portion of the tapered surface 46c on the inlet side of the second flange 46 is higher than the upper edge of the tapered surface 46c of the engaging opening, as the height of the lower blade 42. The height of the line. According to this configuration, even if the sprocket is slightly tilted in the horizontal direction from the rising state, the sprocket is guided into the slider 41 from the introduction port, and the sprocket does not interfere with the second flange 46 but is guided. The tapered surface 46c of the second flange 46 is introduced into the element guide passage 49.

During the introduction of the sprocket into the sprocket guiding passage 49, the sprocket is guided by the tapered surface 46c of the second flange 46, and the force of the sprocket and the drag of the chain is used to cause the sprocket to be tilted. The joint portion gradually tends to be hidden under the second flange 46. Further, by temporarily using the upper plate portions 43a and 44a of the pair of first flanges 43 and 44 and the second flange 46 to ensure the tilting posture of the fasteners introduced into the element guide passage 49, the smooth entry can be smoothly performed. The sprocket of the slider 41 guides the passage 49.

Further, the fastener elements are no longer sandwiched between the upper plate portions 43a and 44a of the lower blade 42 and the second flange 46, so that occurrence of breakage of the fastener elements or breakage of the link fabric or the like can be prevented. Moreover, the smooth sliding operation of the slider 41 can be realized, and the slider 1 for the hidden zipper can be closed without any trouble.

A slider for a concealed slide fastener described in Patent Document 2 is used as a prior art example 2 of the present invention, and a perspective view of the slider is shown in FIG. As shown in FIG. 10, the pair of flanges 53, 54 are provided from the lower blade 52 so as to be provided along the left and right side edge portions orthogonal to the sliding direction of the slider 51, and including the reverse L-shaped cross section.

A central portion of the front edge of the lower blade 52 is provided with a guide post 55 standing between the pair of upper plate portions 53a and 54a. The outer circumference of the guide post 55 is provided with a sprocket guide portion 57 projecting outward toward the inner end surface 56 of the upper plate portions 53a, 54a, and the front end of the sprocket 59 of the upper plate portions 53a, 54a is extended to the sprocket The front end of the guide portion 57 is further forward.

In the invention of Patent Document 2, the front end of the sprocket 59 of the upper plate portions 53a and 54a in the meshing direction extends further forward than the front end of the sprocket guide portion 57. With this configuration, the sprocket 59 is separated from the position in the direction in which the slider 51 is engaged with the slider 51, and even if the engaging head portion 59a is up, the chain can be raised at a right angle with respect to the chain cloth 60. The teeth 59 are in contact with the upper plate portions 53a, 54a extending forward of the front end of the sprocket guiding portion 57, and are guided into the slider 51 while being guided.

Further, the sprocket 59 which is guided to the slider 51 while being in contact with the upper plate portions 53a, 54a is subjected to the action of the previous sprocket 59 which is tilted from the horizontal state, and is applied to the dumping in the horizontal state. force. Further, based on the sliding operation of the slider 51, a drag force for pulling the chain cloth 60 into the slider 51 acts on the fastener element 59.

Thereby, the pair of left and right sprocket teeth 59 are tilted to a horizontal state in a posture of standing upright at a right angle during the sprocket guiding passage of the slider 51. Further, since the chain cloth 60 is slidably attached to the upper plate portions 53a and 54a to approach the guide post 55, the engaging head portion 59a of the fastener element 59 can be brought into contact with the element guide portion 57.

Further, each of the fastener elements 59 in the posture in which the horizontal state is appropriately tilted is introduced into the element guide passage 58 of the slider 51 while the engagement head portion 59a is in contact with the element guide portion 57. The engaging head portion 59a of the sprocket 59 is gradually tilted toward the lower side of the sprocket guiding portion 57, and smoothly moves toward the engaging opening side in the sprocket guiding passage 58.

Thereby, the pair of right and left fastener elements 59 can be meshed in the correct posture (engagement posture) in which the horizontal state is completely tilted. Moreover, the fastener elements 59 no longer engage the link guiding path formed between the flanges 53, 54 and the sprocket guiding portion 57 as before, thereby preventing breakage of the fastener elements 59 or breakage of the chain cloth 60, and the like. . Thus, the invention of Patent Document 2 can perform a smooth sliding operation of the slider 51, and the hidden zipper can be closed without any trouble.

Prior technical literature

Patent literature

Patent Document 1: Japanese Laid-Open Patent Publication No. 2007-54176

Patent Document 2: Japanese Laid-Open Patent Publication No. 2007-135722

In the basic configuration of the patent documents 1 and 2, the sprocket in the posture in which the chain is raised at a right angle guides the meshing head of the sprocket, whereby the sprocket can be tilted into a horizontal posture.

Therefore, in the inventions of Patent Documents 1 and 2, when the fastener element in the posture of standing at a right angle is tilted to a horizontal state, the guide portion for imparting torque to the meshing head of the fastener element is patented. The invention of Document 1 is provided with a second flange 46 that protrudes outward in the outer circumferential direction of the guide post 45, and the invention of Patent Document 2 provides a sprocket guide portion 57.

According to the inventions of Patent Documents 1 and 2, it is possible to tilt the element teeth in a posture that rises at a right angle into a posture in a horizontal state of the meshing posture.

However, the sprocket which is poured by the lateral pulling force acting on the chain cloth may be tilted at various angles due to the difference in the direction in which the transverse pulling force is applied and the magnitude of the transverse pulling force. Therefore, the angle at which the guide portion that can be biased with the torque abuts against the sprocket may be unstable.

Moreover, when a stronger transverse pulling force is applied to the chain cloth, the chain teeth cannot be positively abutted against the guiding portion but slide along the length of the chain cloth, and the chain teeth cannot be smoothly restored to the horizontal position. Therefore, there is still room for improvement.

In particular, in the case where the fixed fastener element is attached by sewing the stitch along the edge of the chain cloth, the fastener element does not become a state in which the fastener element is integrally fixed. Therefore, there is also a case where the chain cloth which has a strong transverse pulling force moves in the transverse pulling direction with respect to the relative movement of the fastener elements.

In the case where the amount of movement of the fastener element in the direction of the transverse direction is small, and the amount of movement of the fastener element is small, for example, the invention of Patent Document 1 cannot make the head of the fastener element contact or energize the second projection with a strong force. Cone surface 46c of edge 46. Further, the invention of Patent Document 2 cannot bring the engaging head portion 59a of the fastener element 59 into contact or impart a strong force to the element guide portion 57.

In such a state, the torque that is tilted to the horizontal position by the sprocket in the tilting posture cannot be made to act on the chain from the tapered surface 46c of the second flange 46 or the sprocket guiding portion 57. tooth.

As a result of carrying out various studies, the inventors of the present invention have recognized that before the first sprocket guiding portion corresponding to the tapered surface 46c of Patent Document 1 or the sprocket guiding portion 57 of Patent Document 2 abuts or abuts, The sprocket rear end portion of the fastener element is slidably attached to the second sprocket guide portion, whereby the sprocket can be tilted as a posture in a horizontal state of the meshing posture, thereby completing the invention of the present application.

Further, by forming the slide for the concealed slide fastener as in the invention of the present application, the force acting from the second sprocket guide portion against the sprocket and the sprocket from the previous sprocket in the posture of being tilted to the horizontal state can be made. The torsion force that is tilted in a horizontal state, the pulling force that drags the chain cloth into the slider, and the like effectively acts on the fastener elements that are introduced into the slider.

By applying these forces to the sprocket, the sprocket which is in a posture in which the chain is raised at a substantially right angle is tilted in a posture in a horizontal state of the meshing posture. Further, the chain belt can be gradually poured over, and smoothly moves toward the meshing opening side in the Y-shaped element guide passage formed in the slider. Thereby, the fastener element can smoothly move in the Y-shaped element guide passage formed in the slider.

Moreover, it is possible to avoid the situation in which the fastener element is sandwiched between the Y-shaped sprocket guiding passages, so that the sliding operation of the slider can be smoothly performed.

As described above, the object of the present invention is to improve the invention of Patent Documents 1 and 2, whereby a hidden zipper capable of smoothly sliding the slider can be used even if a strong lateral pulling force is applied when the zipper is closed. Sliding parts.

In order to achieve the above object, the most important feature of the slider for a hidden zipper of the present invention is that the chain cloth is bent and fixed into a U shape, and a chain is attached and fixed along the edge of the bent chain cloth. One of the teeth is detached from the respective sprocket of the chain belt; and the sliding member comprises: a lower wing plate; and a pair of side walls along a sliding direction of the lower wing plate orthogonal to the sliding member The two sides of the left and right sides are respectively erected; a pair of upper plates respectively extending from the upper ends of the pair of side walls in a direction close to each other; and a guiding column attached to the side of the inlet of the sliding member by the lower wing The first sprocket guiding portion is formed to protrude toward the outer peripheral portion of the guiding post; the Y-shaped chain guiding passage is formed by the inner end surface of the pair of upper plates and the first sprocket a curved end portion of the chain cloth bent in a U shape; and a second sprocket guiding portion attached to a left and right end portions of the lower blade, and a front end of the lower blade The edge engaging end side extends; and the second element guide The portion is raised from the lower blade on the side surface side of the guide post toward the upper plate.

Further, the present invention is mainly characterized in that the second sprocket guide portion is disposed at a position at which the sliding direction of the slider is at the same position as the tip end of the introduction port of the guide post or a position beyond the leading end of the introduction port. to make.

Further, a main feature of the invention of the present invention is that the first sprocket guide includes a side guide surface formed from a side of the guide post toward the engagement opening and having a surface parallel to a sliding direction of the slider; And a front guide surface that is connected to the side guide surface and inclined toward the introduction port side and upward; and the first sprocket guide is configured to face the second sprocket guide.

Further, the main feature of the invention of the present application is that the second sprocket guide portion is a ridge portion formed from an inner wall of the lower wing panel across the inner wall of the side wall.

Further, the main feature of the invention is that the raised portion has an inclined surface that is inclined from the lower blade to the side wall, and the inclined surface faces the first sprocket guiding portion facing the ground.

Further, in the above-described chain guide passage, the inlet-side link guide passage which is divided into two Y-shapes on the inlet side of the slider is attached to the inlet side of the slider. The second sprocket guide portion is extended in the axial direction which is inclined toward the inner side of the axis of the introduction port side chain guide passage.

Furthermore, the main feature of the invention of the present invention is that the start position of the second element guide portion that guides the rear end portion of the sprocket is started, and the engagement of the mesh head of the element is started. Guided to the front of the first sprocket guide.

Further, the main feature of the invention is that the front end of the second sprocket guide is disposed on the lower side of the lower slat of the upper sprocket guide than the inner wall of the upper slat. The front of the face.

Moreover, the main feature of the invention of the present application is that the fastener element is attached and fixed by sewing along the edge of the chain cloth.

Further, the main feature of the present invention is that the front edge of the pair of upper teeth in the meshing direction is extended to the vicinity of the front edge of the lower blade, and the front end of each of the upper plates is viewed from a plane. A curved portion to which a chamfer is applied is formed on the inner side of the edge.

Further, the main feature of the present invention is that the front end portions of the pair of side walls are disposed closer to the engagement opening side than the front end portion of the second sprocket guide portion.

The invention of the present invention relates to a slide fastener for bending and fixing a side edge portion of a chain cloth in a U shape, and attaching and fixing one of the fastener elements to the chain edge along the curved end edge of the side edge portion. Pieces.

Here, a case where the bent portion of the chain cloth introduced into the slider is slid to the front end portion of the upper plate as a pivot point for bending the chain cloth by the lateral pulling force will be described. At this time, a pair of chain belts have a distance from the above-mentioned pivot point to the meshing head longer than the distance from the rear end portion of the chain of the rotating fulcrum. Therefore, as the torque for tilting the element, the rear end portion of the sliding guide element can impart a large torque force to the element as compared with the sliding guide engagement head.

In this way, even if the sprocket which is introduced before the slider is directly introduced in a posture which is raised at a substantially right angle with respect to the chain, the sprocket rear end on the opposite side of the engaging head is guided as a portion of the sprocket which is initially guided. In this way, the torque for the posture in which the relative sprocket is in a horizontal state can be effectively imparted.

Further, when the fixed fastener element is attached by sewing the stitch along the edge of the chain cloth, since the fastener element is not integrally fixed to the chain cloth, even if the chain cloth is moved by the lateral pulling force, the fastener element does not oppose the chain cloth. Moves and moves in one, but becomes a residual state. However, the sprocket moves integrally in this direction with respect to the direction of movement of the chain guide passage along the chain cloth.

Therefore, in the movement of the chain guide passage along the chain cloth, the rear end portion of the fastener element of the fastener element is slid while being moved to the second element guide portion. Further, the meshing head portion of the fastener element moves toward the first element guide portion side in accordance with the second element guide portion, so that the engagement head portion can be slidably coupled to the first element guide portion.

In this manner, the stalk rear end portion is guided while being in contact with the second sprocket guide portion, and is slidably coupled to the first sprocket guide portion. Further, the second sprocket guide can be used to gradually bring the sprocket in the upright state into a horizontal state.

Further, by sliding the meshing head of the sprocket supported by the second sprocket guide to the first sprocket guide, it is possible to reliably tilt the posture in the horizontal state.

In the invention of the present application, the rear end portion of the sprocket is guided in the slider, and the rear end portion of the guide element is extended from the front edge of the lower blade to the meshing port side on the left and right end portions of the lower blade. 2 chain tooth guide. Further, the second sprocket guiding portion is configured to be disposed opposite to the side surface of the guide post, and is configured to be raised from the lower blade to the upper plate.

With this configuration, even if the sprocket to be introduced into the slider is in a posture that rises at a substantially right angle with respect to the chain cloth, by guiding the rear end portion of the sprocket, it can be effectively imparted to make it a relative sprocket. The torque for the posture of the horizontal state.

Further, the meshing head of the sprocket can be supported by the second sprocket guide so that the angle and position of the sprocket when the first sprocket guide is slid to the characteristic range are within the characteristic range. Thereby, the meshing head of the fastener element can be slidably connected to the first sprocket guide portion in a stable state.

In the present invention, the second sprocket guiding portion may be disposed in the sliding direction of the slider at the same position as the leading end of the introduction port side of the guide post, or may be disposed as the arrangement relationship between the second sprocket guiding portion and the guide post. It is arranged at the front end of the inlet side. According to this configuration, since the sprocket can be tilted in a horizontal state before or after the sprocket enters the sprocket guiding path, the sprocket can smoothly pass through the slider.

In the invention of the present application, the configuration of the first sprocket guide portion can be formed from the side of the guide post toward the engagement opening. Further, it may have a side guide surface having a surface parallel to the sliding direction of the slider and a surface continuous with the side guide surface, and may be inclined to the front side and inclined to the front surface. Further, the first sprocket guide portion and the second sprocket guide portion may be arranged to face each other.

According to this configuration, the first sprocket guide and the second sprocket guide can effectively perform the operation of tilting the sprocket in a horizontal state. Further, after the stalk rear end portion is slidably attached to the second sprocket guide portion, the meshing head portion of the sprocket can be slid to the first sprocket guide portion this time.

In the second sprocket guide, the sprocket that is in a posture that rises at a substantially right angle with respect to the chain is slightly tilted in the horizontal direction, or the sprocket is slidably attached to the second sprocket guide. The first sprocket guide and the second sprocket guide work together to reliably tilt the sprocket in a horizontal state.

The configuration of the second sprocket guide portion can be configured as a ridge portion formed from the inner wall of the lower wing panel across the inner wall of the side wall. According to this configuration, the guide surface and/or the guide step can be formed in the raised portion. Moreover, in this case, the configuration as the guide surface can be formed as an inclined surface that is inclined from the lower blade to the side wall. Further, the guide surface may be configured as a surface that is disposed to face the first element guide portion side.

According to this configuration, the second sprocket guide can effectively perform the operation of tilting the sprocket to a horizontal state. Further, the fastener element that is in a horizontal state can be effectively biased from the guide surface and/or the guide step of the second sprocket guide portion with respect to the fastener element that is in a posture that is raised at a substantially right angle with respect to the link fabric. The rear end of the tooth. Further, by forming the guide surface as an inclined surface, it is possible to effectively guide the tilting surface when the sprocket is tilted in a horizontal state.

In the invention of the present invention, the Y-shaped chain guide passage is formed so as to be linearly enlarged toward the introduction port side of the slider as the introduction port side which is divided into two inlets on the inlet side of the slider. In the configuration of the opening, the second sprocket guiding portion may be disposed to extend in the axial direction which is inclined to the inner side from the axis of the chain guide passage on the inlet side.

According to this configuration, it is possible to increase the radius of curvature when the curved portion of the chain cloth that abuts against the end edge of the pair of upper plates is bent in the longitudinal direction of the chain cloth. Thereby, the chain which is dragged in the lateral direction can be smoothly introduced into the chain guide passage. Further, it is possible to control the rising angle of the fastener elements which are raised at substantially right angles with respect to the chain cloth.

Moreover, the shape of the Y-shaped chain guide passage can be expanded linearly, and the axis of the second sprocket guide can be placed inwardly with respect to the axis linearly expanded and closed. According to this configuration, the sprocket can move toward the engagement opening side of the slider, and is more surely closer to the first sprocket guiding side. Therefore, the fastener element can be smoothly abutted against the first element guide surface, and can be tilted in a horizontal state.

In particular, in the case where the fastener element used is sewn to the chain cloth by the suture, even if the chain cloth is moved by the lateral pulling force, and the fastener element is displaced to the side edge side of the chain cloth in a residual state, However, since the interval between the second element guide portion and the chain guide path is narrowed toward the engagement opening side of the slider, the offset element can be forcibly returned to the original position.

In the configuration of the present invention, the first sprocket that can be guided by the meshing head of the sliding sprocket can be placed at the start position of the second sprocket guiding portion that is guided by the rear end portion of the sliding sprocket The front of the guide.

According to this configuration, the position, angle, and the like of the fastener elements can be supported within a specific range by the second element guide portion before the element contacts the first element guide portion. Further, since the position, the angle, and the like can be supported within a specific range, the second sprocket guide can effectively tilt the slant angle of the sprocket to the horizontal posture direction side.

In the configuration of the present invention, the front end position of the second sprocket guide portion on the side of the inlet port is disposed in front of the inclined surface of the first sprocket guide portion on the side of the lower wall of the upper plate.

According to this configuration, even if the fastener element to be introduced into the slider is placed at a substantially right angle with respect to the chain cloth, the fastener element can be first slidably attached to the second element guide portion. Further, it is possible to use a torque in which the sprocket is in a horizontal state to give priority to the second sprocket guide.

In the configuration of the present invention, the front end edge of the pair of upper sprocket teeth in the meshing direction is extended to the vicinity of the front edge of the lower blade, and is formed inside the front edge of the pair of upper plates. A bent portion to which a chamfer is applied is formed to the crotch portion.

According to this configuration, even if the sprocket to be introduced into the slider is in a posture that rises at a substantially right angle with respect to the chain cloth, the sprocket can be tilted by the action of the front edge of the upper plate and the second sprocket guiding portion. The posture of the horizontal state.

In the invention of the present application, the inner side facing crotch portions of the front edges of the upper plates are formed into chamfered bent portion shapes. Further, when the chain cloth is slidably attached to the inner side facing portion, when a strong pulling force in the lateral direction is applied to the curved portion of the chain cloth, the bending of the chain cloth can be accepted by the curved portion formed on the inner side facing portion. The Ministry was strongly dragged. Therefore, the stress acting on the opposite bending portion of the chain cloth can be weakened.

In this way, even in the process of tilting the element teeth into the horizontal state of the meshing posture, occurrence of breakage of the chain cloth or the like can be prevented.

In the configuration of the present invention, the end portion of the pair of side walls on the front end side is disposed closer to the engagement port side than the end portion of the front end side of the second element guide portion.

According to this configuration, when the curved portion of the chain cloth that is in contact with the pair of upper plates is bent in the longitudinal direction of the chain cloth, the end portion of the second sprocket guiding portion on the front end side and the pair of side walls can be formed. The end portions on the front end side function as a space portion that avoids interference with the element teeth.

Further, when the bent portion of the chain cloth abutting against the edge of the pair of upper plates is bent along the shape of the bent portion of the front edge of the upper plate with one of the chamfers, the fastener is not required to abut against the pair of side walls. At the front end, it can be smoothly bent.

In the invention of the present application, the first sprocket guide portion is used to force the meshing head of the sprocket to rotate in the horizontal posture direction, or the front end of the pair of upper plates is used to bend the chain cloth with respect to the longitudinal direction thereof. In the state in which the sprocket is rotated in the horizontal posture, the second sprocket guide can be applied to the stalk rear end portion of the sprocket.

In addition, the introduction of the link guiding path to the chain fabric can be smoothly performed, and the inclination angle of the fastener element when the first sprocket guiding portion is slidably engaged with the meshing head of the sprocket can be inclined toward the horizontal posture direction side.

Hereinafter, the form of the invention of the present application will be described in detail with reference to the drawings. The present invention is not limited to the embodiments described below, and various modifications can be made as long as it has substantially the same configuration as the present invention and exhibits the same operational effects.

Further, in the invention of the present application, the front-rear direction refers to the sliding direction of the slider, and the slider introduction port side is the front side and the engagement port side is the rear side. The left-right direction refers to the direction orthogonal to the sliding direction of the slider when viewed in plan. Further, the up-and-down direction refers to the front surface direction of the lower blade of the slider, and the upper plate side is referred to as the front side, and the lower blade side is referred to as the inner side.

In addition, the chain for the concealed zipper used in the present invention may be integrally formed into a type of synthetic resin or metal which becomes a fastener element, or a type in which a metal-formed fastener element is reinforced to the chain cloth, or Various types of chains, which are formed in a coil shape or a zigzag-shaped chain, are attached and fixed to a chain cloth, and are used as chains for concealed zippers.

Further, as shown in FIGS. 7 and 8, the slider 1 for a concealed slide fastener according to the present invention is used to bend and fix a side edge portion of the fastener fabric 14 in a U shape along the side edge. The curved end edge of the portion is mounted with a sliding member of the concealed zipper of one of the chain elements 13 of the chain.

Example

As shown in FIG. 1, the slider 1 is configured to include a lower blade 2; a pair of flanges 3, 4 are erected along the left and right sides of the lower blade 2; and are guided by the lower blade 2 a column 5; a handle mounting post 6 disposed on the upper surface of the guide post 5; a first sprocket guide 7 disposed on the outer circumference of the guide post 5; and a second sprocket guide 8 disposed on the left and right of the lower blade 2; And a pull tab (not shown) that is rotatably supported by the pull tab mounting post 6.

Further, the slider 1 is formed in a shape that is symmetrical with respect to the center line passing through the center line of the slider 1 in the left-right direction and perpendicular to the plane of the lower blade 2 as a mirror surface. The width of the lower blade 2 in the left-right direction is formed from the front edge 2a of the lower blade 2 to a position slightly rearward of the rear end of the guide post 5, and is gradually reduced in width, and then up to the meshing port 17 side. The end edges are formed in the same width.

As shown in FIGS. 1 to 3, the pair of flanges 3, 4 are provided with a pair of side walls 3a, 4a standing along the left and right side edges of the lower wing 2, and from the upper ends of the side walls 3a, 4a to each other. The opposite side is bent to extend inwardly, and is also extended to one of the front and rear plates 3b, 4b in the front and rear direction of the slider 1; and the cross-sectional shape is formed in an inverse L shape.

As shown in Fig. 2, each of the side walls 3a and 4a is configured to include a parallel portion 23c from the meshing port 17 in plan view, and a flared portion 23b extending continuously from the parallel portion 23c and extending in the width direction toward the front. Further, the front end portions 20 of the side walls 3a, 4a are extended to the vicinity of the position where the width direction of the left and right direction of the lower blade 2 starts to gradually decrease in width. Moreover, the width shape of the front side lower side flap 2 from the expansion part 23b is comprised as the parallel part 23a.

In addition, in FIG. 2, when the slider 1 is viewed in plan, the left half of FIG. 2 shows a plan view of the slider 1, and the right half of FIG. 2 shows a section which eliminates the first sprocket guide 7 and the upper plate 3b. Figure. Further, in the right half of Fig. 2, the first sprocket guiding portion 7 and the upper plate 3b which are eliminated are displayed in a virtual shape by dotted lines.

In the plan view shown in Fig. 2, the front edge 21 of each of the upper plates 3b, 4b is extended to the periphery of the front edge 2a of the lower blade 2. Since it is comprised in this way, the lower side of the front edge 21 side of each upper plate 3b and 4b is comprised as the space part not supported by each side wall 3a and 4a.

That is, it is preferable that the front end edges 21 of the upper plates 3b and 4b are formed to extend forward of the front end portions 20 of the respective side walls 3a and 4a. Further, the distance between the front edge 21 of the upper plates 3b, 4b and the front end portion 20 of each of the side walls 3a, 4a is preferably such that the sprocket 13 attached to the hidden zipper does not intersect the front end portion 20 of each of the side walls 3a, 4a. Constructed by interference.

As shown in Fig. 1, the inner opposing side portions of the front end edges 21 of the upper plates 3b, 4b are formed as chamfered bent portions 21a. Moreover, the end faces of the upper plates 3b and 4b facing each other are configured as the inner end faces 21b.

The guide post 5 is formed in the vicinity of the introduction port 16 of the slider 1, and is formed to stand from the center portion of the lower blade 2 in the left-right direction. Further, a pull-tab mounting post 6 of a gate type extending in the front-rear direction is provided on the upper surface of the guide post 5. Further, the outer peripheral portion of the guide post 5 is provided with a plate-shaped first sprocket guide portion 7 which is formed to protrude outward from the outer peripheral portion of the guide post 5 toward the inner end surface 21b of the pair of upper plates 3b and 4b.

After the tab mounting post 6 of the illustrated example is inserted into the annular portion of the tab (not shown), the tab mounting post 6 is reinforced, whereby the tab can be supported by the tab mounting post 6.

The PCT/JP 2009/64927 application of the applicant of the present application can also be divided into the main body portion 19 of the lower wing panel 2 and the cover portion of the main body portion 19. The plate member 18 is covered in two parts. Further, as shown in Patent Documents 1 and 2, the guide post 5 and the lower blade 2 may be integrally formed.

The configuration of the guide post 5 shown in Fig. 4 shows a configuration example in which the main body portion 19 and the coated upper plate member 18 are divided into two parts. A convex portion is formed on the outer peripheral surface of the main body portion 19, and a concave portion formed inside the covered upper plate member 18 is fitted. After the concave portion of the covered upper plate member 18 is fitted into the convex portion formed on the outer peripheral surface of the main body portion 19, as shown in Fig. 3, the leg portion 18a formed at the end portion of the upper plate member 18 can be reinforced to be covered. The upper plate member 18 is fixed to the main body portion 19.

As the recessed portion of the upper plate member 18, the rear end side of the recessed portion of the upper plate member 18 can be formed in a vertex shape. According to this configuration, the front and rear end faces of the main body portion 19 can be sandwiched between the end side of the concave portion of the upper plate member 18 as the apex and the leg portion 18a.

As shown in FIG. 1 and FIG. 4, the outer peripheral surface of the coated upper plate member 18 is formed with a front guide surface 7a which is inclined so that the front end side of the covered upper plate member 18 is curved forward. Further, the inner wall of the covered upper plate member 18 is formed with a side guide surface 7b which is continuous from the left and right sides of the front guide surface 7a, and faces the side of the lower blade 2 toward the engagement port 17 from the side of the guide post 5.

In other words, the side guide surface 7b is a surface parallel to the inner wall of the plate-shaped first element guide portion 7 that protrudes from the guide post 5 and is parallel to the inner wall surface of the lower blade 2. On the other hand, the front guide surface 7a is an inclined surface that is inclined upward from the front end of the side guide surface 7b, and is formed on the front end side of the plate-shaped first sprocket guide 7.

The first sprocket guiding portion 7 is configured by the front guiding surface 7a and the pair of left and right side guiding surfaces 7b. As shown in FIG. 3, the first sprocket guide portion 7 is configured to be opposed to the second sprocket guide portion 8 which will be described later.

In addition, FIG. 1 shows an example of a configuration in which the front guide surface 7a has a curved surface in a curved shape. However, the front curved surface of the front guide surface 7a may be formed into a concave or convex curved surface shape.

A pull tab mounting post 6 for supporting a pull tab (not shown) is erected on the upper surface of the coated upper plate member 18. In the case where the guide post 5 and the lower blade 2 are integrally formed, it is necessary to form the front guide surface 7a and the pair of right and left guide surfaces 7b on the guide post 5 as the first sprocket guide 7.

In addition, the pull tab guide post 6 can also be attached to the lower flap 2 as described in the application of PCT/JP 2009/64927.

As shown in Fig. 2, the inner end surface 21b of the pair of upper plates 3b and 4b and the outer end surface of the first sprocket guiding portion 7 constitute a Y-shaped guide for guiding the curved portion 14a of the chain cloth 14 bent in a U shape. The chain guide guides the passage 12.

The rear end portion of the first sprocket guide portion 7 is extended to the vicinity of the connection portion between the parallel portion 23a and the flared portion 23b of each of the side walls 3a, 4a.

The passage surrounded by the inner wall surface of the pair of flanges 3, 4, the inner wall surface of the lower blade 2, the guide post 5, and the first sprocket guide portion 7 is a sprocket 13 that is guided and fixed to the chain cloth 14. The sprocket guide passage 10 is formed.

Further, a second sprocket guide portion 8 is formed on the inner walls of the right and left end sides of the lower blade 2. The second sprocket guide portion 8 is a ridge portion that is raised toward the upper side of the inner wall of the lower blade 2, and the ridge portion extends the front end portion 22 from the front edge 2a of the lower blade 2 toward the engagement opening 17.

The second element guide portion 8 is substantially parallel to the sliding direction of the slider, that is, extending in the front-rear direction, and the engagement opening side of the second element guide portion 8 abuts against the expanded portion of each of the side walls 3a, 4a. The part of the inner wall of 23b is the terminal.

As shown in FIGS. 1 and 3, the second element guide portion 8 is configured to include a guide step portion 8a having a flat surface 24 facing the side walls 3a, 4a side, and a lower flap 2 from the guide step portion 8a. The guide surface 8b is inclined downward on the upper side. The flat surface 24 of the guiding step 8a may be formed as a surface parallel to the upper surface of the lower blade 2, or may be configured as a surface that is inclined downward toward the meshing opening 17.

The configuration of the guide surface 8b or the guide step portion 8a of the second sprocket guide portion 8 may be such that it is extended in the axial direction parallel to the center line of the left and right direction of the slider 1 when viewed in plan as described above. Or, the inlet 16 of the slider 1 is formed to extend in the axial direction inclined to the center line side in the left-right direction.

In other words, it is necessary to follow the stalk rear end portion 13b of the sprocket 13 that is slidably guided by the second sprocket guiding portion 8 toward the engaging opening 17, and to see the center line side in the left-right direction of the slider 1 as viewed in plan. In this manner, the guide surface 8b and/or the guide step 8a are formed.

Further, the position of the front end portion of the second sprocket guide portion 8 is exemplified by the position of the front edge 2a of the lower blade 2, in other words, the front end of the guide post 5 is extended. However, the position of the front end portion of the second sprocket guide portion 8 may be a length range of one or more half of the side surface of the guide post 5 in the front-rear direction, and may be extended to a position facing the side surface of the guide post 5 .

A step portion 25 is formed on the lower edge side of the downwardly inclined guide surface 8b. As shown in FIGS. 5 and 6, the step portion 25 and the ridge portion 29 formed on the upper surface of the lower blade 2 from the guide post 5 to the engagement opening 17 allow the chain element 13 to be in a horizontal posture. The teeth 13 are lifted from the upper side of the lower wing 2. The guide surface 8b may be formed as an inclined plane or as a curved surface having a smooth convex curved surface or a concave curved surface.

According to this configuration, when the fastener element 13 is in the horizontal posture state, the upper surface of the lower blade 2 can be rubbed without contacting the suture 27 to which the fastener element 13 is attached and fixed to the fastener fabric 14.

As shown in Fig. 6, the connecting portion from the guiding step portion 8a toward the guiding surface 8b is formed as a smooth convex curved surface, and the connecting portion from the guiding surface 8b toward the step portion 25 is formed as a smooth convex curved surface.

Further, in the invention of the present application, the guide step portion 8a may be omitted, and the guide surface 8b may be extended to the left and right side end sides of the lower blade 2.

As shown in FIG. 2, a crotch portion 28 is provided along the boundary portion between each of the side walls 3a, 4a and the lower wing plate 2, and the crotch portion 28 is provided for improving the mounting strength between the side walls 3a, 4a and the lower wing plate 2. Improve the formability during molding.

Next, the sliding operation of the slider 1 will be described in detail with reference to Figs. 5 to 8 .

The chain for a concealed slide fastener shown in Fig. 5 is a type in which a fastener element 13 formed in a coil shape or a zigzag shape formed in a line shape is attached and fixed to a chain cloth (not shown). As shown in Fig. 7, the linear fastener elements 13 are attached and fixed to the curved portion of the chain fabric 14 bent in a U shape by a suture 27. As shown in Fig. 5, the pair of sprocket teeth 13 are disposed such that the mutually engaging head portions 13a face each other, and the opposite sides of the meshing head portions 13a are coupled by the inverting portions.

5 is a cross-sectional view of the slider 1 in which the upper plates 3b and 4b and the first element guide portion 7 are omitted, and the fastener elements 13 introduced into the element guide passage 10 of the lower blade 2 are shown. 6 is a view showing that the second element guide portion 8 is slidably coupled to the stalk rear end portion 13b, and the engagement head portion 13a is slidably coupled to the first sprocket guide portion 7, whereby the sprocket introduced into the slider 1 is introduced. 13 is a state in which the posture of the fastener element 13 introduced into the element guide passage 10 changes in a state of standing up.

Figure 7 is a cross-sectional view taken along line A-A of Figure 5, and Figure 8 is a cross-sectional view taken along line B-B of Figure 5.

As can be understood from Fig. 5, the pair of chain belts 15 located on the front side of the introduction port 16 of the slider 1 are in a state of being largely opened by the strong lateral pulling force of the front edge 21 of the pair of upper plates 3b, 4b as a pivot point. At this time, the sprocket 13 is raised upward with the meshing head portion 13a facing the chain cloth surface of the chain cloth 14 at a nearly right angle.

By sliding the slider 1 in the closing direction (upward direction of FIG. 5), the sprocket rear end portion 13b of the continuous sprocket 13 is sequentially slidably guided to the second sprocket guiding portion 8 of the slider 1. On the step 8a and/or the guide surface 8b. At this time, the sprocket 13 that is slidably attached to the second sprocket guide 8 is in a posture in which the meshing head portion 13a is raised upward due to the strong lateral pulling force acting on the chain cloth 14.

When the slider 1 is further slid in the closing direction, a torque is applied to the sprocket 13 to tilt the sprocket 13 from the second sprocket guiding portion 8 in a horizontal state. Further, the previous sprocket 13 which is tilted in the horizontal state is passed through the chain cloth 14, and acts to twist the subsequent sprocket 13 into a horizontal state, thereby acting to drag the chain cloth 14 into the slider 1. Force and so on.

These forces can be effectively applied to the sprocket 13 introduced into the slider 1, and the sprocket 13 in the upright posture is slidably attached to the second sprocket guide 8 to be tilted in a horizontal posture. Further, as shown in Fig. 7, the meshing head portion 13a is further slidably attached to the front surface guide surface 7a of the first sprocket guide portion 7, so that the fastener element 13 is further tilted in a horizontal state. Moreover, as shown in FIG. 8, the fastener element 13 can be in a horizontal state.

As shown in Fig. 6, the sprocket 13 in the upright posture is a posture in which it is rotated clockwise and gradually tilted to a horizontal state.

As described above, in the invention of the present invention, when the sprocket 13 in the upright posture is introduced into the slider 1, first, the stalk rear end portion 13b is biased from the second sprocket guide portion 8 so that the sprocket 13 is formed. In the posture of the horizontal state, the engaging head portion 13a is biased from the first sprocket guiding portion 7 in a posture for causing the sprocket 13 to be in a horizontal state.

Further, since one of the first sprocket guiding portions 7 is formed continuously with the side guiding surface 7a as the inclined surface, the sprocket 13 which is poured into the horizontal state can be smoothly introduced into the sprocket meshing region. .

Further, as shown in Fig. 7, the distance from the front end portion of the pair of upper plates 3b, 4b to the engaging head portion 13a from the curved portion 14a of the chain cloth 14 introduced into the slider 1 is compared with the sprocket The distance of the rear end portion 13b is long. According to this configuration, as the torque for tilting the sprocket 13, the sliding guide stalk rear end portion 13b can impart a larger torque force than the sliding guide engagement head portion 13a.

Moreover, the start position of the first element guide portion 7 that starts the guidance by sliding the engagement head portion 13a, and the start position of the chain guide passage 10 that starts the guidance by sliding the curved portion 14a of the chain cloth 14 are The start position of the second element guide portion 8 that causes the stalk rear end portion 13b to be slid and started to guide is disposed in the front.

With this configuration, before the first sprocket guiding portion 7 forcibly rotates the meshing head portion 13a of the fastener element 13 in the horizontal posture direction, or the front edge of the pair of upper plates 3b, 4b is used to cause the chain cloth 14 to be opposed thereto Before the bending in the longitudinal direction, the second sprocket guiding portion 8 can impart a torque for rotating the sprocket 13 in the horizontal posture direction to the stalk rear end portion 13b.

In addition, the second element guide portion 8 supports the element 13 so that the torque of the first element guide portion 7 (the front surface guide surface 7a) is easily applied.

Therefore, the chain cloth 14 can be smoothly guided into the chain guide passage 12, and when the meshing head portion 13a of the fastener element 13 is slidably coupled to the first sprocket guide portion 7, the inclination angle of the sprocket 13 can be oriented to some extent. Horizontal posture direction side.

In particular, as shown in FIG. 7, in the case where the fixed fastener element 13 is attached by sewing the suture 27 along the edge of the fastener fabric 14, the fastener element 13 is not integrally fixed to the fastener fabric 14. Therefore, the chain cloth 14 which acts on the tension and the tension causes a relative movement of the fastener element 13 and a direction of the lateral tension.

Further, even if the chain cloth 14 relatively moves toward the sprocket 13 due to the lateral pulling force, and the sprocket 13 remains in the moving direction of the chain cloth 14, the movement of the chain guide passage 12 relative to the chain cloth 14 is relatively In the direction, the sprocket 13 still moves integrally with respect to the same direction.

In the movement of the chain guide passage 12 along the chain cloth 14, the stalk rear end portion 13b of the fastener element 13 is slidably moved to the second sprocket guide portion 8 while moving. In addition, the meshing head portion 13a of the element 13 is moved to the first element guide portion 7 side by the second element guide portion 8, and the meshing head portion 13a is slidably coupled to the first element guide portion 7.

Further, the second element guide portion 8 and the first element guide portion 7 are used to tilt the element 13 from the standing posture to the horizontal posture.

As described above, in the invention of the present application, since the fastener element 13 can be smoothly tilted into the horizontal posture, the fastener element 13 can be surely prevented from being caught in the chain guide passage 12. Further, the sprocket 13 in the sprocket guiding passage 10 can be smoothly slid, and the sprocket 13 can be surely moved in the tilting posture necessary for the meshing.

That is, the pair of sprocket teeth 13 can be surely brought into a horizontal state before the pair of sprocket teeth 13 are engaged with each other. Thereby, the pair of sprocket teeth 13 can be surely engaged with each other, and the occurrence of the so-called destruction state can be surely prevented.

In the above description, the sprocket of the concealed slide fastener has been described as a chain-shaped sprocket. However, the sprocket of the present invention is not limited to the chain-shaped sprocket, as described in Patent Document 2 The invention can also be suitably applied to a concealed zipper using so-called sprocket teeth that are attached and fixed to the chain cloth at a specific interval.

In this case as well, the meshing head side of the fastener element is in a state of rising upward due to the influence of the chain belt which exerts a strong pulling force. However, first, the end portion of the fastener element is guided to the second element guide portion so as to be slightly inclined in a horizontal state, and then the engagement head portion is further horizontally placed in the first element guide portion. Dump the boot.

Further, the second element guide portion and the first element guide portion can be used to incline the element in a horizontal state. In this way, it is possible to surely prevent the fastener element from being caught in the chain guide passage or to cause a so-called broken state when the pair of fastener elements are engaged.

Industrial availability

The invention of the present application can be preferably used as a slider for a concealed slide fastener that is attached to an opening of a seat cover or a garment of a seat.

1. . . Concealed zipper slider

2. . . Lower wing

2a. . . Front edge

3, 4. . . Flange

3a, 4a. . . Side wall

3b, 4b. . . On board

5. . . Guide column

6. . . Pull tab mounting post

7. . . First sprocket guide

7a. . . Front guide surface

7b. . . Side guide surface

8. . . Second sprocket guide

8a. . . Guided step

8b. . . Guide surface

10. . . Sprocket guiding path

12. . . Chain guide path

13. . . Chain teeth

13a. . . Meshing head

13b. . . Chain rear end

14. . . Chain cloth

16. . . Guide

17. . . Mating port

18. . . Covered plate member

18a. . . Foot

19. . . Main body

20. . . Front end

twenty one. . . Front edge

21b. . . Inner end face

41. . . Slider

42. . . Lower wing

43, 44. . . First flange

43a, 44a. . . Upper plate section

45. . . Guide column

46. . . Second flange

46c. . . tapered surface

51. . . Slider

52. . . Lower wing

53, 54, . . Flange

53a, 54a. . . Upper plate section

55. . . Guide column

56. . . Inner end face

57. . . Sprocket guide

58. . . Sprocket guiding path

Figure 1 is a perspective view of a slider for a hidden zipper; (Embodiment)

Figure 2 is a plan view and a cross-sectional view of the slider; (Embodiment)

Figure 3 is a front view of the slider; (Embodiment)

Figure 4 is a cross-sectional view along the centerline of the slider; (Embodiment)

Figure 5 is an explanatory view of the action of the meshing element teeth observed from the sprocket guiding surface of the slider; (illustration)

Fig. 6 is an explanatory view showing the main part of the action of the fastener element observed from the side of the inlet; (Example)

Figure 7 is a cross-sectional view taken along line A-A of Figure 5; (Example)

Figure 8 is a cross-sectional view taken along line B-B of Figure 5; (Example)

Figure 9 is a perspective view of a slider for a hidden zipper; (previous example 1) and

Figure 10 is a perspective view of a slider for a hidden zipper. (previous example 2)

1. . . Concealed zipper slider

2. . . Lower wing

2a. . . Front edge

3, 4. . . Flange

3a, 4a. . . Side wall

3b, 4b. . . On board

5. . . Guide column

6. . . Pull tab mounting post

7. . . First sprocket guide

7a. . . Front guide surface

7b. . . Side guide surface

8. . . Second sprocket guide

8a. . . Guided step

8b. . . Guide surface

10. . . Sprocket guiding path

12. . . Chain guide path

16. . . Guide

17. . . Mating port

18. . . Covered plate member

18a. . . Foot

19. . . Main body

20. . . Front end

twenty one. . . Front edge

21b. . . Inner end face

Claims (11)

A sliding member (1) for concealed zipper, characterized in that: the pair of chain cloths (14) are bent and fixed in a U shape, and are mounted and fixed along the end edge of the bent chain cloth (14). One of the fastener elements (13) is detached from the above-mentioned respective fastener elements (13) of the chain belt (15); and the slider (1) comprises: a lower wing plate (2); a pair of side walls (3a, 4a) And erected along the two side edges of the lower blade (2) orthogonal to the sliding direction of the slider (1); a pair of upper plates (3b, 4b) The upper ends of the pair of side walls (3a, 4a) are respectively disposed in a direction close to each other; and the guiding post (5) is attached to the side of the inlet (16) of the sliding member (1) from the lower wing plate (2) The first sprocket guiding portion (7) is formed to protrude toward the outer peripheral portion of the guiding post (5); the Y-shaped chain guiding passage (12) is formed by using the pair of upper plates The inner end surface (21b) of (3b, 4b) and the outer end surface of the first sprocket guiding portion (7) guide the curved portion (14a) of the chain cloth (14) bent in a U shape; and the second a sprocket guiding portion (8) attached to the left and right end portions of the lower blade (2), from above The front edge of the lower blade (2) extends toward the engagement opening (17) side; and the second sprocket guide (8) is the lower blade (2) from the side of the guide post (5). It is bulged to the upper plate (3b, 4b). The sliding member for a hidden zipper according to claim 1, wherein the second sprocket guiding portion (8) is disposed in a sliding direction of the slider (1) and a leading end of the guiding post (5) The position of the same position or the position of the front end of the inlet side is formed. A sliding member for a hidden zipper according to claim 1 or 2, wherein said first sprocket guiding portion (7) comprises: a side guiding surface (7b) which is oriented from the side of said guiding column (5) toward the meshing member a port formed with a surface parallel to the sliding direction of the slider (1); and a front guiding surface (7a) connected to the side guiding surface (7b) and facing the inlet (16) side and The first sprocket guiding portion (7) is configured to face the second sprocket guiding portion (8). The sliding member for a concealed zipper according to claim 1, wherein the second sprocket guiding portion (8) is a ridge formed from an inner wall of the lower wing panel (2) and an inner wall of the side wall (3a, 4a). unit. The sliding member for a hidden zipper according to claim 4, wherein the raised portion has an inclined surface inclined from the lower wing plate (2) toward the side wall (3a, 4a), and the inclined surface is coupled to the first sprocket The side of the guiding portion (7) is opposite to the ground. The sliding member for a concealed zipper according to claim 1, wherein the chain guide passage is divided into two Y-shaped introduction port side chain guide passages toward the introduction port (16) side of the slider (1) (12), the side of the introduction port (16) of the slider (1) is expanded while being linearly widened, and the second element guide portion (8) is chained toward the side of the introduction port. The axis of the guiding passage (12) extends axially more toward the inside. The slide for a concealed slide fastener according to claim 1, wherein the start position of the second sprocket guide portion (8) for guiding the sprocket rear end portion (13b) to be guided to be guided is arranged in the above-mentioned The first sprocket guiding portion (7) that is guided by the meshing head portion (13a) of the sprocket (13) is slid and guided. The sliding member for a hidden zipper according to claim 1, wherein the leading end side of the second sprocket guiding portion (8) is disposed in the first sprocket guiding portion (7) than the upper plate (3b) The inner wall of 4b) is further forward than the inclined surface located on the side of the lower wing (2). A sliding member for a concealed zipper according to claim 1, wherein the fastener element (13) is attached and fixed by sewing along an edge of the chain cloth (14). The sliding member for a concealed zipper according to claim 1, wherein the front edge (21) of the pair of upper teeth (13) of the pair of upper plates (3b, 4b) is extended to the above-mentioned upper edge (21) when viewed from a plane The lower edge of the lower blade (2) is formed in the vicinity of the front edge (2a); and the inner side facing edge of each of the upper plates (3b, 4b) is formed with a chamfered bent portion (21a). A sliding member for a hidden zipper according to claim 10, wherein the front end portions (20) of the pair of side walls (3a, 4a) are disposed more than the front end portion (22) of the second sprocket guiding portion (8) Near the side of the mating port (17).