JPH10194017A - Guide rail and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guide rail and its manufacturing method with improved appearance, lowered sliding noise when a slide member is moved, and lessened foreign matter entering through the opening. SOLUTION: A pair of synthetic resin made cover members 3 are joined to a metal made guide rail body 2 including a hollow 2a in its interior so as to cover an opening 2e of the guide rail body 2 and the contact of the inside edge of a bent portion 3b with a slide member 4 protruding beyond the opening 2e when the slide member 4 moves in the interior of the hollow 2a from a gap 3e between the bent portions 3b of the pair of cover member 3 through the opening 2e allows the slide member 4 to move by the bent portions 3b elastically bending upward and enlarging the gap 3e enabling the slide member 4 to make a smooth slide. Appearance of the guide rail can be improved by the opening 2e being covered with the bent portions 3b restoring to their original configuration after passage of the slide member 4, the sliding noise produced from the opening 2e can be lowered and entering of foreign matter into the hollow 2a through the opening 2e can be lessened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide rail which can be used for, for example, a seat slider, a door slider or a curtain slider for a vehicle, and a method of manufacturing the same.

[0002]

2. Description of the Related Art For example, as a guide rail used for a seat slider, a door slider, a curtain slider (also referred to as a curtain rail) or the like for a vehicle, a space for allowing movement of a slide member along a longitudinal direction is provided inside. A metal member having an opening formed by a pair of opening flanges formed in a substantially groove shape and facing each other while maintaining a certain size is used, and the slide member is moved in the internal space through the opening of the guide rail main body. It has become.

[0003]

However, in the conventional guide rail, the opening is exposed, so that the appearance is poor, and when the slide member moves, a sliding noise is generated from the opening. There is a problem that foreign matter such as dust and mud easily enters the internal space from the opening.

Accordingly, the present invention can improve the appearance, reduce the occurrence of abnormal noise when the slide member is moved, and reduce the intrusion of foreign matter such as dust and mud from the opening into the internal space. And a method of manufacturing the same.

[0005]

According to a first aspect of the present invention, there is provided a pair of openings which are formed in a substantially groove-like shape having a space therein for allowing movement of a slide member along a longitudinal direction, and are opposed to each other while maintaining a certain size. A metal guide rail body having an opening formed by a flange, and a pair of cover members joined to the respective opening flanges so as to cover the opening of the guide rail body from the outside, wherein the cover member is a base. And a bending portion made of a material exhibiting rubber-like elasticity,
The base is joined to the opening flange, and the distal end of the flexible portion projects outward so as to exhibit an obtuse angle with the base, and these distal ends are located with a small interval facing each other, and the slide member is moved inside the guide rail body. When moving, the distal end of the flexible portion comes into contact with the slide member, the flexible portion flexes elastically, the interval is increased to allow the slide member to move, and returns to its original shape after passing through the slide member. It is characterized by having.

According to the first aspect of the present invention, when the slide member moves inside the space through the opening of the guide rail main body from the space between the bending parts of the pair of cover members, the distal end of the bending part is guided by the guide rail main body. The protrusion protrudes upward from the opening and contacts the slide member, and the bending portion elastically bends upward, thereby expanding the interval to allow the movement of the slide member and moving the slide member with respect to the guide rail body. It can slide smoothly.

Further, since the bent portions of the pair of cover members return to the original shape after passing through the slide member and cover the opening of the guide rail main body, the appearance can be improved, and of course the sliding noise from the opening can be improved. And the intrusion of foreign substances such as dust and mud into the space from the opening can be reduced.

According to a second aspect of the present invention, the cover member according to the first aspect has an extension extending integrally outward from the base in the width direction, and is laid around the outside of the guide rail main body at this extension. The end portion of the member is covered from the outside.

According to the second aspect of the present invention, by inserting and pressing a terminal portion of a member laid around the outside of the guide rail body below the extension portion of the pair of cover members, the extension portion is laid. Terminal processing can be performed by covering the terminal unit from the outside, the appearance can be improved, and the terminal unit can be prevented from being turned up.

According to a third aspect of the present invention, the cover member according to the first and second aspects is characterized in that the bending portion is made of a soft and elastic synthetic resin, and the other portion is made of a hard synthetic resin. .

According to the third aspect of the present invention, since the bending portion is soft and elastic, the bending portion is elastically bent upward when the slide member is moved and returns to its original shape after passing through the slide member. Can be properly performed.

According to a fourth aspect of the present invention, there is provided a method of manufacturing a guide rail. The formed metal guide rail main body is moved along the longitudinal direction, and includes a pair of bases and a flexure made of a material exhibiting rubber-like elasticity. When an external force is applied between the pair of flexures, another The cover member provided with a connecting ridge having a thickness which is provided continuously through a pair of scheduled separation portions which are more easily broken or separated than the portion and which is less likely to be broken than both the planned separation portions. Joining the opening flanges to the opening flanges at the base portion so as to cover the portions from the outside, and applying a force in a direction intersecting the longitudinal direction to the ridges after joining and cooling the cover member, and It is characterized in that the deflection unit each other in parts with a predetermined spacing and separating or breaking.

According to the method of the fourth aspect, the metal guide rail main body, which is formed in a substantially groove shape and has a space allowing the slide member to move in the longitudinal direction therein, is moved in the longitudinal direction. The guide rail body is formed integrally with a cover member made of a material having rubber-like elasticity in part, and the connecting ridge is broken or separated from the bent portion by the pair of separation scheduled portions to form a pair. The flexible portions can be appropriately positioned, and the guide rail including the guide rail body and the cover member can be easily manufactured.

According to a fifth aspect of the present invention, the guide rail main body according to the fourth aspect is continuously supplied in a resin extrusion die along a longitudinal direction to form a cover member integrally. And

According to the fifth aspect of the present invention, since the guide rail composed of the guide rail body and the cover member is continuously and integrally formed, the mass production can be easily performed while maintaining high productivity.

According to a sixth aspect of the present invention, the guide rail body according to the fourth aspect is cut into a predetermined length in advance, and the guide rail body is sequentially supplied into a resin extruding mold to integrate the cover member. It is characterized in that it is formed in a uniform manner.

According to the sixth aspect of the present invention, the guide rails of a predetermined length are sequentially supplied into the resin extruding die, and the guide rails of the predetermined length are easily mass-produced. It is suitable for using a beautiful extruded material of an aluminum alloy cut in advance to a predetermined length as a guide rail body.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 and 2 show a guide rail according to a first embodiment. In these figures, reference numeral 1 denotes a guide rail for a vehicle seat slider, a metal guide rail main body 2 and a pair of left and right synthetic resin covers. And a member 3.

In the case of this embodiment, the guide rail body 2
Is formed in a substantially groove-like shape having a space 2a inside which allows the sliding member 4 to move along the longitudinal direction by a rolled product of a steel plate or a deformed extruded material of an aluminum alloy, and the like. A pair of side flanges 2c integrally extending above both side edges, a pair of opening flanges 2d integrally extending from an upper end edge of each side flange 2c, and an inner edge of each opening flange 2d And a pair of opening edge flanges 2f integrally extending downward so as to form an opening 2e having an opening width of a more uniform dimension.

The bottom flange 2 of the guide rail body 2
The bracket 5 is fixed to the back surface of b by welding or the like.

The pair of cover members 3 includes a base 3a, a bent portion 3b integrally extended from the base 3a so as to cover the opening 2e of the guide rail body 2 from the outside, and a base 3a.
It has an extension 3c integrally extending outward in the width direction, and a leg 3d integrally extending below a continuous portion of each extension 3c and the base 3a.

Each base 3a, each extension 3c and each leg 3d
Is formed of a synthetic resin, rubber, or the like, which is harder than the bending portion 3b, and these base portions 3a and legs 3d are fixed to the opening flanges 2d and the side flanges 2c of the guide rail body 2 as the fixing means. Are bonded via an adhesive layer 6 having a thickness of about several μ of a heat-activated type, and each flexible portion 3b is formed of a soft polyvinyl resin having a high elasticity, TPU (thermoplastic urethane resin), TPO (Thermoplastic olefin-based resin) or the like, or a thermoplastic elastomer synthetic resin or a soft synthetic rubber-like elastic resin in which a lubricant such as paraffin wax is mixed into the synthetic resin.

Each of the bent portions 3b is inclined and protrudes upward from the opening 2e of the guide rail body 2 so as to exhibit an obtuse angle θ with each of the base portions 3a. They are positioned so as to face each other on the left and right with an interval 3e smaller than that.

In the above description, the terms “upward” and “right and left” indicate directions on the paper of the drawing, and the same applies to the following description.

According to the structure of the above embodiment, as shown in FIG. 1, the bracket 5 is fastened to the vehicle floor panel 7 with the bolt 8 and the nut 9 via the washer 10, and the guide rail 1 is connected to the floor panel. 7, the slide member 4 connected to the vehicle seat (not shown) passes through the opening 3 e of the guide rail main body 2 through the opening 3 e of the bending portion 3 b of the pair of cover members 3 so as to be inside the space 2 a. When moving, the inner edge of the bending portion 3b comes into contact with the slide member 4 protruding above the opening 2e of the guide rail main body 2, and the bending portion 3b elastically bends upward as shown by a virtual line. As a result, the distance 3e is enlarged, the movement of the slide member 4 is allowed, and the slide member 4 can be slid smoothly with respect to the guide rail body 2.

The bending portion 3b of the pair of cover members 3
Is returned to its original shape after passing through the slide member 4 and covers the opening 2e of the guide rail main body 2, so that not only the appearance can be improved, but also the occurrence of sliding noise from the opening 2e can be reduced, and Intrusion of foreign matter such as dust and mud into the space 2a through the opening 2e can be reduced.

A member laid around the outside of the guide rail body 2 below the extension 3c of the pair of cover members 3;
For example, by inserting and pressing the terminal portion of the floor carpet 11, the extension portion 3c covers the terminal portion of the floor carpet 11 from the outside to perform the mounting work of the floor carpet 11, thereby improving the appearance and improving the appearance of the floor carpet. The turning up can be prevented.

When the bending portion 3b is bent upward, the leg portions 3d of the pair of cover members 3 bear on a side flange 2c of the guide rail body 2 to bear a part of the internal stress of the cover member 3. Thus, the joint between the base 3a of the cover member 3 and the opening flange 2d of the guide rail main body 2 can be appropriately held.

In this embodiment, the extension 3c is extended substantially horizontally. However, as shown by an imaginary line in FIG. 1, the extension 3c is extended downward so as to be inclined. If the terminal of the floor carpet 11 is pressed down by 3c, the terminal of the floor carpet 11 can be more reliably prevented from being turned up.

In this case, if the extension 3c is formed of the same material as the flexible portion 3b having rubber elasticity, the extension 3c
Can be easily attached to the floor carpet 11 so that the terminal portion of the floor carpet 11 is turned up.

FIGS. 3 to 8 show a method of manufacturing a guide rail according to a second embodiment. In these figures, the uncoiler 20 is used in consideration of the strength, weight, and workability of the guide rail 1.
For example, a strip 21 of a high-tensile steel plate having a tensile force of about 40 to 80 kf / mm 2 is roll-formed at a constant speed V 1 by a roll forming device 22.
The cleaning and degreasing device 23, the primary drying device 24, the adhesive coating device 25, the secondary drying device 26, the resin molding device 27, the cooling device 28, the take-up device 29, the winding device 30, and the cutting device 31 are passed in this order. A guide rail 1 composed of a metal guide rail main body 2 having a cross-sectional shape shown in FIG. 8 and having a certain dimension and a pair of synthetic resin cover members 3 is continuously formed.

In this embodiment, first, a long guide rail body 2A as a primary molded product is formed from the strip 21 by the roll forming device 22.

As shown in FIG. 4, the guide rail body 2A has a sliding member 4 (FIG.
Of the bottom flange 2b, a pair of side flanges 2c integrally extending above both side edges of the bottom flange 2b, and a pair of side flanges 2c. A pair of opening flanges 2d integrally extending inside the upper end edge, and a pair of extension flanges integrally extending downward so as to form an opening 2e having an opening width of a certain dimension from the inner edge of each opening flange 2d. And an opening edge flange 2f.

Next, cleaning water or cleaning degreasing liquid is sprayed on the guide rail main body 2A by the cleaning and degreasing device 23 to remove lubricating oil and dirt adhered during roll forming to the guide rail main body 2A.
After washing from A, the guide rail main body 2A is heated by heating means such as hot air, infrared rays, or electromagnetic induction in the primary drying device 24.
Is heated to evaporate the liquid and dry.

Then, as shown in FIG. 5, the adhesive application device 25 shown in FIG. 3 extends over the outer surface of each opening flange 2d of the guide rail body 2A and the upper outer surface of each side flange 2c as shown in FIG. Is formed to a thickness of about several tens of microns.

Subsequently, the adhesive layer 6 is heated and dried by a heating means such as hot air or infrared light in the secondary drying device 26, and then the opening 2e of the guide rail main body 2A is covered from the outside by the resin molding device 27. By thus integrally forming the cover member 3A, the guide rail 1A as a long intermediate product composed of the guide rail main body 2A and the cover member 3A is formed.

As shown in FIG. 6, the resin molding device 27 has first and second resin supply ports 27b and 27c provided on the outer peripheral surface of an extrusion die 27a (extrusion die), and a central portion from the upstream side. A guide rail main body passage hole 27d penetrating to the downstream side, a resin molding orifice 27e connected to the outside of the passage hole 27d, and both sides of the resin molding orifice 27e are connected to a first resin supply port. A first resin flow path 27f communicating with the orifice 2b;
A second resin flow path 27g that communicates the central portion of 7e with the second resin supply port 27c, and a guide protruding downstream from the inside of the through hole 27d and the inside of the central portion of the resin forming orifice 27e. Holder 2 supporting rail body 2A
7h, and passes through the long guide rail main body 2A as a primary intermediate product passing through the secondary drying device
A constant speed V1 is inserted into the guide rail 7d from the upstream side to the downstream side along the longitudinal direction of the guide rail main body 2A (see FIG. 3).
And the heat-fused predetermined synthetic resin material
The resin is supplied from the resin supply port 27b to both sides of the resin molding orifice 27e through the first resin flow path 27f,
A thermoplastic resin synthetic resin such as U, TPO or the like, or a soft and rubber-like elastic synthetic resin in which a lubricant such as paraffin wax is mixed into the synthetic resin is heated and melted to form a second resin supply port 27c. More second resin flow path 2
The adhesive layer 6 applied to the opening flange 2d and the side flange 2c of the guide rail main body 2A is activated by the heat of each molding material by supplying the orifice 27e to the center portion of the resin forming orifice 27e through 7g. The cover member 3A joined to the opening flange 2d and the side flange 2c of the guide rail main body 2A via the adhesive layer 6 is extruded into a single shape.

As shown in FIG. 7, the single-piece extruded cover member 3A is integrated with a pair of bases 3a joined to the opening flange 2d of the guide rail main body 2A, and is formed outside the bases 3a in the width direction. A pair of extension parts 3 extended to
c, a pair of legs 3d extending integrally below the continuous portion of each extension 3c and each base 3a and joined to the side flange 2c of the guide rail main body 2A, and a guide from each base 3a. A pair of flexures 3b integrally extended so as to cover the opening 2e of the rail body 2A from the outside, and a pair of flexures 3
b is thinly formed between b and is connected to a pair of scheduled separation portions 3f which break or separate more easily than other portions when an external force in the direction of arrow X is applied, and are less likely to break than the planned separation portion 3f. It has a thick and integrally formed connecting ridge 3g.

Referring back to FIG. 3, a long guide rail 1 as a secondary intermediate product having passed through the resin molding device 27 will be described.
After cooling the guide rail 1A by the cooling device 28, the guide rail 1A is pulled out to the cutting device 31 side by the pulling device 29 at the same speed as the constant speed V1 of the primary molded product.
The connecting ridge 3g of the cover member 3A of the secondary molded product is pulled upward to intersect the longitudinal direction between the cutting member 31 and the cutting device 31, and the connecting ridge 3g is broken or separated from the bending portion 3b at the scheduled separation portion 3f. And wind it around the drum of the winding device 30.

The drum of the winding device 30 has
The pull-out device 29 is rotated in one direction at a peripheral speed V2 (V2> V1) set to be higher than the pull-out speed V1 of the next molded product, and the peeled-out connecting ridge 3g is wound up by a drum. A constant tension sufficient to break or separate the bent portions 3b at predetermined intervals 3e is applied to the connecting projections 3g of the secondary molded product drawn out from the secondary protrusions at the predetermined separation portions 3f while maintaining a predetermined interval 3e.

When the connecting ridge 3g is formed of the same resin as the flexible portion 3b, the connecting ridge 3g is broken at a portion to be separated, but the connecting ridge 3g is formed of a resin material having no compatibility with the flexible portion 3b. Alternatively, when a separate member previously formed in a string shape is supplied to the resin molding device 27 and extruded integrally with the bending portion 3b, it is separated at the portion to be separated.

Thereafter, a secondary intermediate product consisting of the long guide rail body 2A and the pair of cover members 3 separated from each other by the flexible portions 3b is cut into a predetermined length by the cutting device 31 to obtain a finished product. A guide rail 1 consisting of a guide rail body 2 having a predetermined length and a pair of cover members 3 can be obtained.

This cutting device 31 has a punch die unit 31b driven by a hydraulic cylinder 31a as a driving source for driving and a position detecting sensor 31c, and the punch 31d stopped at the upper limit position of the punch die unit 31b. The secondary molded product is drawn into a space formed between the secondary molded product and the die 31e, and the position detection sensor 31c outputs a position detection signal S1 of the tip of the secondary molded product to a control unit (not shown). The controller moves forward the fluid pressure cylinder 31a in response to the forward movement signal S2 and travels the punch die unit 31b from the position indicated by the solid line to the position detection sensor 31c at the same speed as the secondary molded product. The part moves the punch up and down with respect to the die in response to the cutting operation signal S3, cuts a predetermined position of the secondary molded product with the descending punch and die, and raises the punch. After stopping at the limit position, the controller returns the hydraulic cylinder 31a by the return path operation signal S4 to return the punch die unit 31b to the original position shown by the solid line, thereby setting the secondary intermediate product to the predetermined length. One cutting operation for obtaining the guide rail 1 as a finished product having the sectional shape shown in FIG. 8 by cutting is completed.

According to the manufacturing method of this embodiment, the metal guide rail main body 2A, which is formed in a substantially groove shape and has a space 2a inside which allows the slide member 4 to move along the longitudinal direction, in the longitudinal direction. Continuously along the resin molding device 27
To form an integrally formed cover member 3A made of synthetic resin, and the connecting ridge 3g is broken or separated by a pair of scheduled separation portions 3f. The pair of bending portions 3b can be appropriately positioned, and the guide rail 1 including the guide rail main body 2A and the cover member 3 can be easily mass-produced.

Since the head of the connecting ridge 3g of the single-shaped cover member 3A is formed in an enlarged sectional shape as shown in FIGS. 6 to 7, even when the connecting ridge 3g is peeled off by hand, it is gripped. It is easy and the workability can be improved.

As shown in FIG. 7, if the pair of flexures 3b are tapered so that they gradually become thinner from the base 3a to the part 3f to be separated, the connecting ridge 3g can be connected to the part to be separated. In a state where the flexible portion 3b is peeled off from the flexible portion 3b at 3f, and the pair of flexible portions 3b are separated or broken while maintaining a predetermined interval 3e, the flexible portion 3b can have good flexibility and resilience.

If a thermoplastic elastomer synthetic resin such as TPU, TPO or the like is used for the molding material of the bending portion 3b,
The sliding contact resistance between the bending portion 3b and the above-described slider member 4 is reduced, and the slider member 4 can be moved smoothly.

If a lubricant such as paraffin wax is mixed into the synthetic resin of the molding material of the flexible portion 3b, the slidability of the slider member can be further improved.

If a synthetic resin such as an ionomer resin having good adhesion to the metal forming the guide rail body 2A is used as a molding material for the base 3a and the leg 3d, the adhesive layer 6 as a fixing means can be formed. In this case, the adhesive application device 25 and the secondary drying device 26 shown in FIG. 1 become unnecessary, and the manufacturing equipment can be simplified.

If lubricating oil is not used when the guide rail body 2A is roll-formed, the cleaning and degreasing device 23 shown in FIG.
In addition, the manufacturing equipment can be simplified by omitting the primary drying device 24.

If the secondary intermediate has rigidity, the manufacturing equipment can be simplified by omitting the take-off device 29 shown in FIG.

In this embodiment, the cutting device 31 is disposed at the most downstream position in the manufacturing process. However, the cutting device 31 is disposed between the roll forming device 22 and the cleaning and degreasing device 23 or between the secondary drying device 26 and the resin forming device. A primary intermediate product which has been previously cut to a predetermined length may be obtained by disposing the intermediate product between the cutting device 31 and the cleaning device 31 in this case. Between the device 23 or the cutting device 31
The guide rail main body 2 which has been arranged between the resin molding device 27 and the guide rail main body 2 previously cut to a predetermined length by the intermediate product feeding device is sequentially supplied to the cleaning and degreasing device 23 or the resin molding device 27, and the cover member 3A Can be integrally formed.

When the entire cover member 3A is formed by resin molding using the same material as the molding material of the flexible portion 3b, the first resin supply port 27b shown in FIGS. Can be reduced.

Further, EPD is used as the material of the cover member 3A.
When rubber such as M is used, the cooling device 28 may be replaced with a vulcanizing device.

[0056]

As described above, according to the present invention, the following effects can be obtained.

According to the first aspect, when the slide member moves inside the space through the opening of the guide rail main body from the space between the bending parts of the pair of cover members, the tip of the bending part becomes the opening of the guide rail main body. By contacting the slide member protruding upward, the bending portion elastically bends upward, thereby expanding the interval and allowing the movement of the slide member,
The slide member can slide smoothly with respect to the guide rail main body.

Further, since the bent portions of the pair of cover members return to the original shape after passing through the slide member and cover the opening of the guide rail body, the appearance can be improved, and of course, the sliding noise from the opening can be improved. And the intrusion of foreign matter such as dust and mud into the space through the opening can be reduced.

According to the second aspect, in addition to the effect of the first aspect, by inserting and pressing a terminal portion of a member laid around the outside of the guide rail body below the extension of the pair of cover members, The extension portion covers the terminal portion of the laying member from the outside to perform terminal processing, so that the appearance can be improved and the terminal portion can be prevented from being turned up.

According to the third aspect, in addition to the effects of the first and second aspects, since the bending portion is soft and elastic, the upward bending of the sliding member during the movement of the sliding member can be achieved. To the original shape after passing through.

According to the manufacturing method of the fourth aspect, the metal guide rail main body, which is formed in a substantially groove shape and has a space allowing the slide member to move in the longitudinal direction therein, is moved in the longitudinal direction. The guide rail body is formed integrally with a cover member made of a material having rubber-like elasticity in part, and the connecting ridge is broken or separated at the pair of planned separation portions, thereby forming a pair of bending portions. The guide rails composed of the guide rail body and the cover member can be easily manufactured by appropriately positioning the comrades.

According to the fifth aspect, in addition to the effect of the fourth aspect, since the guide rail comprising the guide rail body and the cover member is continuously and integrally formed by extrusion, high productivity can be easily maintained and mass production can be performed. can do.

According to the sixth aspect, in addition to the effect of the fourth aspect, a guide rail body cut in advance to a predetermined length is sequentially supplied into a resin extrusion die, so that a guide rail of a predetermined length is provided. Can be easily mass-produced, and is suitable for using an aluminum alloy extruded material or the like cut in advance to a predetermined length as a guide rail body.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a state where a guide rail according to a first embodiment of the present invention is mounted on a vehicle floor.

FIG. 2 is an exemplary perspective view showing a guide rail according to the embodiment;

FIG. 3 is a process chart showing a manufacturing method according to a second embodiment of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along line BB of FIG. 3;

FIG. 6 is a sectional view taken along line CC of FIG. 3;

FIG. 7 is an enlarged sectional view of a main part of FIG. 6;

FIG. 8 is a sectional view taken along line DD of FIG. 3;

[Description of Signs] 1, 1A Guide Rail 2, 2A Guide Rail Main Body 2a Space 2d Opening Flange 2e Opening 3,3A Cover Member 3a Base 3b Flexure 3c Extension 3e Interval 3f Planned Separation Part 3g Connection Projection 4 Slide Member θ obtuse angle

Claims (6)

[Claims] 1. A metal guide formed in a substantially groove-like shape having a space allowing a movement of a slide member in a longitudinal direction therein and having an opening formed by a pair of opening flanges facing each other while maintaining a certain size. A rail body, a pair of cover members joined to the respective opening flanges so as to cover the opening of the guide rail body from the outside, and the cover member has a base and a flexible portion made of a material exhibiting rubber-like elasticity; The base is joined to the opening flange, the tip of the flexible part projects outward so as to form an obtuse angle with the base, and these tips are located with a slight interval facing each other, inside the guide rail body. When the slide member moves, the distal end of the flexure portion contacts the slide member, the flexure portion flexes elastically, the interval is enlarged, and the slide member is allowed to move, A guide rail which returns to its original shape after passing through a member. 2. The cover member has an extended portion integrally extending from the base portion to the outside in the width direction, and the extended portion covers the terminal portion of the member laid around the outside of the guide rail body from the outside. The guide rail according to claim 1, wherein the guide rail is provided. 3. The guide rail according to claim 1, wherein the cover member has a flexible portion made of a soft and elastic synthetic resin and another portion made of a hard synthetic resin. . 4. A metal guide rail main body, which is formed in a substantially groove-like shape having a space allowing movement of a slide member therein and has an opening formed by a pair of opening flanges facing each other while maintaining a predetermined size, is provided in a longitudinal direction. Along with a pair of bases and a flexure made of a material exhibiting rubber-like elasticity, and a pair of separations that break or separate more easily than other parts when an external force is applied between the pair of flexures A cover member provided with a connecting ridge having a thicker thickness than the two planned separation portions and connected to each other through the predetermined portion is provided on each of the opening flanges so as to cover the opening of the guide rail body from the outside. A step of joining at the base portion, and after joining and cooling the cover member, applying a force in a direction intersecting with the longitudinal direction to the ridge to separate the bent portions at a predetermined interval at the scheduled separation portion. Or And a step of breaking the guide rail. 5. The method for manufacturing a guide rail according to claim 4, wherein the guide rail main body is continuously supplied into the resin extrusion die along the longitudinal direction to form the cover member integrally. . 6. The cover member is formed integrally by sequentially feeding guide rail bodies cut in advance to a predetermined length into a resin extrusion die.
The manufacturing method of the guide rail described.