EA044364B1 - SOLID METAL RUNNER AND KEY RING FOR RUNNER CLASP - Google Patents

Description

Field of invention

The invention generally relates to slide fasteners, commonly referred to as zippers, and more particularly to a one-piece slider and key fob made of metal for a slide fastener.

BACKGROUND OF THE INVENTION

A zipper, zipper, fastener or snake, formerly known as a hook fastener or slider fastener, is a device commonly used to join the edges of exposed areas of fabric or other flexible material, such as on a garment or bag. It is used in clothing (such as jackets and jeans), suitcases and other bags, sporting goods, camping supplies and other products.

Most zippers/zip fasteners consist of two rows of projecting teeth that can be brought into mutual contact with interlocking rows containing tens to hundreds of specially shaped metal or plastic teeth. These teeth can be either separate or made of a continuous spiral and are also called elements. The runner is manually controlled and moves along rows of teeth. Inside the runner there is a Y-shaped channel that ensures the engagement or disengagement of opposite rows of teeth depending on the direction of movement of the runner.

Typically, the zipper is a small part of the total cost of the product. However, if it fails, the entire garment or device may be rendered unusable until the zipper is replaced or repaired. Problems that arise are often related to the zipper slider part. Sliders are usually made from a slider part and a keychain. The user grasps the key fob, which is pivotally coupled to the slider, and pushes or pulls to move the slider in one direction or the other to cause the slider to move. The movement of the runner causes the teeth to engage with each other and disengage during movement. Sliders are usually made in such a way that they contain one or more parts to which a keychain is then attached. Attaching the key fob to the slider is typically accomplished by bending a slider bracket portion that is injection molded and has clearance to ensure mutual engagement of the two components. Other methods require the attachment of additional bracket components that can be bent, supported, or otherwise attached to the runner. However, these designs are fragile and prone to breakage with repeated use, which leads to the detachment of the key fob from the slider.

In the past, it has been proposed that the slider and key fob be formed in a single operation. However, the proposed methods, devices and resulting zippers were not feasible or were not acceptable to industry when manufactured from metal. Fabricating the metal slider assembly so that the fob is mutually engaged with the bracket has proven to be very difficult to achieve due to the rigid properties of the metal, which make it very difficult to retract the tool from the formed part without changing the geometry of the part in an undesirable manner.

For example, US Pat. No. 2,736,062 to Scheuermann et al. discloses a method for casting a slider and a key fob together in one operation. Scheuermann uses four runners that intersect at 45° to each other. The sliders intersect in parts in the form of a bracket and a slider keychain assembly, with the keychain located at a vertical right angle to the upper surface of the slider. However, this method, as shown in the graphics, requires that the inner surfaces of the key fob loop and bracket have 45° angles or similar angles that create sharp points along the inner surfaces. Sharp points cause stress to concentrate in that area, and sharp corners wear very quickly, causing abrasion of any surface coatings. This causes the runner assembly to fade and often leads to corrosion of the parts during washing. In addition, the modified geometry significantly limits the movement of the key fob in the bracket by reducing the space in which the key fob must rotate and slide in the bracket.

US Patent No. 5,604,962 to Mayerhofer, No. 5,698,243 to Wakabayashi, No. 4,210,196 to Weiner, and UK Patent No. 2,220,608 to Liso show variations of the device invented by Scheuermann, all of which require corners inside the bracket and keychain for retracting instruments. Although angles are not shown in any of these patents, retracting tools through solidified metal becomes impossible, and therefore angles are necessary for the tools to work.

US Pat. No. 2,509,278 to Scheuermann discloses a mold that rotates a key fob around its vertical axis in an attempt to eliminate the need for corners on the inside surface of the key fob loop. However, angles are still required on the inside surface of the shackle, and the difficulty in making tools with the precision required to rotate the key fob around a vertical axis has meant that they have been prohibitively expensive to manufacture.

US Pat. No. 4,790,973 to Minami et al. discloses a different method and

- 1 044364 device for casting runners assembled. According to Minami, the runner is cast first, and after the runner has solidified, the casting core is partially retracted to form the keyring in a secondary casting operation while the runner is still positioned in the mold.

US Pat. No. 5,013,511 to Akashi discloses another method and apparatus for forming a metal zipper puller. According to Akashi, like Minami, the first operation is to form a slider part, and the secondary operation is to form a keychain. However, the key fob according to Akashi includes a pin that engages with the slider bracket, instead of a loop, as disclosed in another prior art document.

US Pat. No. 4,985,969 to Terada et al. discloses another method and apparatus for forming a slider in a zipper assembly. According to Terada, the key fob is formed together with the intermediate part of the key fob, the two parts being mutually engaged by means of a pin element formed in the mold as a secondary operation.

UK Patent Application No. 2289917, filed on behalf of YKK Corp., discloses a slider assembly having a stopper. The YKK Corp. invention regarding a runner having a stopper discloses forming a key fob in a separate mold and placing the key fob in a secondary mold where the runner is formed around a key fob pin portion to complete the assembly.

Thus, there is a need in the art for an apparatus and method for forming a slider in conjunction with a key fob such that the slider and key fob can be formed from metal without the need to change the geometry of the slider assembly, including the internal surfaces with the corners in the bracket and the hinge portions. keychain There is also a need in the prior art for a slider and key fob that operate to provide a greater degree of side-to-side movement between the slider and key fob when operating in the first direction and a more limited degree of side-to-side movement in the second direction to better accommodate ergonomics. for the user and for better control of the slider clasp.

The slider and key fob assembly together must satisfy the ergonomic requirements that the zipper slider assembly must satisfy in order to be acceptable to the end user. This includes providing a slider bracket having an internal surface geometry that allows the key fob to move and rotate freely. Also, the zipper assembly should not require excessive force to operate or contain excessively large components. Moreover, the zipper assembly must be assembled in a manner that does not detract from the aesthetic appearance of the completed zipper assembly or garment assembly. The slider assembly shall be adapted to move from side to side of the key fob during the fastening operation of the slider assembly, while limiting side to side movement during the unfastening operation of the slider assembly for smoother operation and improved ergonomics of the slider assembly. during his work.

Thus, the present invention provides an injection molded zipper assembly formed in a single operation that overcomes the disadvantages of prior art zipper sliders formed in one or more operations. The zipper puller assembly of the present invention not only provides relative ease of manufacture, but also allows the sliders and fobs to be manufactured together without the need to place corners, which restrict movement and are susceptible to breakage, on the interior surfaces of the key fob clip and loop. The present invention also provides a manufacturing method that utilizes at least one slider that slides laterally, thereby eliminating the need for sliders that interlock at the corners and require changing the geometry of the part to accommodate the angles of the slider.

The essence of the invention

Briefly, the present invention relates to a zipper puller assembly and a method for making a zipper puller assembly. The slider assembly is formed in a single injection molding operation such that the slider and keychain are formed simultaneously. The mold includes at least one lateral slider that allows the key fob staple and loop to be formed while retaining their full geometric shape and without the mating flat surfaces required in the prior art. The slider assembly includes a keychain that has a geometry that permits side-to-side movement during the zipper teeth closing operation and limits side-to-side movement during the zipper teeth opening operation to better accommodate user ergonomics and for better guidance applied forces for smooth operation of the runner assembly over the teeth.

Accordingly, it is an object of the present invention to provide a zipper puller assembly that includes a slider and a keychain and is formed from metal in a single operation.

It is a further object of the present invention to provide a slider assembly comprising a slider and a fob that is injection molded such that it retains its full geometry without the need for mating internal surfaces as required in the prior art.

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It is yet another further object of the present invention to provide a zipper puller assembly that includes a closed key fob loop and a closed puller clip.

Another object of the present invention is to provide a method of manufacturing a zipper slider assembly that includes at least one lateral slider for displacing a tool around a portion of the formed slider assembly.

It is yet another object of the present invention to provide a method for making a slider assembly for a zipper that includes two or more lateral sliders to move tool slider portions around the geometry of a solidified portion.

It is yet another object of the present invention to provide a bracket and key fob structure that provides a first amount of side-to-side angularity of the key fob when the slider is moved in a first direction and a second amount of side-to-side angularity when the slider is moved in a second direction.

It is yet another object of the present invention to provide a key fob element that provides a first amount of clearance between the slider and the staple when the key fob is located at a right angle to the staple, and a second amount of clearance when the key fob is located at any other angle relative to the staple.

Other objects and advantages of the present invention will become apparent from the following description, taken in conjunction with the accompanying drawings, wherein certain embodiments of the present invention are set forth by way of illustration and example. The drawings are part of this description, contain exemplary embodiments of the present invention and illustrate various objects and features thereof.

Brief description of the figures

In fig. 1 is a top perspective view of one embodiment of the present invention, illustrating a preferred injection molding position of the runner assembly;

in fig. 2 is a partial top perspective view of the embodiment shown in FIG. 1, which illustrates a slider keychain that has a circular cross-section in the staple portion;

in fig. 3 is a partial top view of the embodiment shown in FIG. 1, which illustrates the closure of an injection molding tool having at least one lateral slider;

in fig. 4 is a perspective view of an alternative embodiment illustrating an additional link formed between the slider and the slider keychain assembly;

in fig. 5 is a side view illustrating an alternative embodiment providing two staples and two key fobs on one slider;

in fig. 6 is an end view illustrating an alternative embodiment providing two staples and two key fobs on one slider;

in fig. 7 is an end view illustrating an alternative embodiment having two staples, two key fobs and two intermediate links on one slider;

in fig. 8 is a side view illustrating an alternative embodiment having two staples, two key fobs and two intermediate links on one slider;

in fig. 9 is an isometric view illustrating a slider assembly that finds application in double zippers;

in fig. 10 is a partial front view illustrating the side-to-side angular movement of the key fob element relative to the slider element as the slider assembly moves in a first direction;

in fig. 11 is a partial plan view illustrating the angular movement of the key fob element relative to the slider element;

in fig. 12A is a perspective view illustrating the slider element and showing the difference in width and shape of the sides of the staple;

in fig. 12B is a sectional view taken along lines 12B-12B of FIG. 12A, which illustrates a first cross-sectional profile of said bracket;

in fig. 12C is a sectional view taken along lines 12C-12C of FIG. 12A, which illustrates a second cross-sectional profile of said bracket;

in fig. 13 is a partial side view illustrating the design of the key fob element that allows for various movements;

in fig. 14A is a perspective view illustrating the position of the key fob member during the unfastening movement of the slider assembly; and in fig. 14B is a sectional view taken along lines 14B-14B of FIG. 14A.

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Detailed Description of Preferred Embodiments

Although the present invention is capable of being embodied in various forms, the drawings show and will describe hereinafter a currently preferred embodiment with the understanding that the present description is to be considered an illustrative example of the present invention and is not intended to limit the present invention to the specific embodiments illustrated. implementation.

In general, in FIG. 1-3 illustrate the slider assembly (10) for zippers. In its simplest form, the slider assembly (10) contains a slider-like element (12) and a keychain-like element (14). The runner assembly (10) is preferably formed in a single operation in an injection molding machine (not shown). The slider member (12) is configured to include a bracket (16) for positioning and holding the key fob member (14) so as to allow the key fob member (14) to rotate and undergo some linear movement. The bracket (16) is also formed in such a way that it does not contain breaks or gaps that could weaken the bracket (16) and allow the key fob element (14) to separate. In particular, the bracket (16) includes a first end (18), a second end (20) and a central part (22). Both the first and second ends (18), (20) are formed integrally with the upper surface (24) of the runner (12). The inner surface (26) of the bracket is formed substantially flat as it extends laterally from one side to the other of the runner, but may contain any desired longitudinal contour for functionality or aesthetic reasons. Since the bracket is formed in one piece, corner radii (28) and fillets (30) can be formed during the injection molding process to provide strength and rigidity to the structure, as well as an aesthetic appearance. The interior portion (32) of the slider (12) includes a dividing wall (34) that separates the interior portion (32) into a Y-shape allowing connection or disconnection of a zipper chain (not shown) as is known in the art. In a preferred embodiment, the slider (12) includes an upper guide (72) and a lower guide (74) for guiding the zipper chain through the slider (12); wherein the upper guide (72) and the lower guide (74) are separate and attached to each other by means of a dividing partition (34), wherein the dividing partition and said guides (72), (74) are configured and placed to ensure mutual engagement of the fastener chain - zippers when moving in the first direction and disengagement of the zipper chain when moving in the second direction. At least one, and in some embodiments, two guide walls (36) are integrally formed as part of the runner to assist in guiding the teeth as they pass through the runner assembly (12).

The keychain (14) is formed in position around the bracket (16) in such a way that it contains a part (38) in the form of a loop. The loop portion (38) is integrally formed with the first tongue portion (40) to prevent breakage and separation of the two components during use. The loop portion (38) may have any desired geometry, which may include circles, ovals, polygons, etc., as long as the geometry is complete and does not require mating flat surfaces that are required to remove tools from the formed portion during production time, as is known from the prior art. In the embodiment illustrated in FIG. 1, the hinge portion (38) is formed of a square cross-section with a substantially flat inner hinge surface (42) with internal corners (44) that impart the desired appearance and functionality to the runner assembly (10) as a whole. In fig. 2 illustrates a slider assembly (10) having a loop portion (38) with a circular cross section formed around the same or similar bracket structure shown in FIG. 1. In this embodiment, the loop is formed with full geometry and does not require relief geometry to retract the instruments after formation.

In fig. 3 illustrates one embodiment relating to the formation of a key fob (14) in place around a bracket (16). As illustrated, the tool includes at least one lateral slider (46). As the injection molding tool (50) is closed to form the slider (12) and key fob (14), at least one slider (46) moves laterally, and at least one first insert (48) and one The secondary liner (52) is inserted into the area under the bracket (16). The insert (48) and lateral slider (46) are first positioned along the insertion path to allow lateral displacement once the slider has reached its insertion depth. The secondary liner (52) is then positioned in the mold in a timed manner adjacent to the sideways slider (46) after the sideways movement has occurred. The remaining parts of the mold may be closed before, after or simultaneously with the slides without departing from the scope of the present invention. Other parts of the mold include portions of the mold that form the remainder of the hinge and key fob portion (38). In the most preferred embodiment, the key fob (14) is positioned vertically relative to the slider, as illustrated in FIG. 1. However, it should be noted that by using the sideways slider(s), the key fob can be rotated at different angles as required in the mold without departing from the scope of the present invention. After the runner assembly (10) is formed in the injection mold, at least one lateral slider is configured to be orthogonally displaced laterally after the runner assembly is formed, the lateral displacement being is carried out to a length sufficient to overcome the geometry of the part (38) in the form of a loop before the slider is retracted from under the bracket (16).

In fig. 4-8 illustrate a slider assembly (10) further comprising a connecting link (54) positioned and formed between the key fob element (14) and the slider element (12). The connecting link (54) is formed as a continuous member extending around the bracket (16) and the loop portion (38), connecting the bracket (16) to the keychain member (14). The connecting link (54) is formed by sliders that slide to the side in the same way as the part (38) in the form of a key fob loop (14).

In fig. 5-8 illustrate a slider assembly (10) comprising a key fob-style member (14) molded on each respective side of the slider assembly. In this embodiment, the slider member (12) includes a bottom surface (25), the bottom surface including a second bracket (56), the second bracket (56) having a first end (58) and a second end (60), both of which formed integrally with the lower surface (25). The inner surface (62) of the staple is formed substantially flat as it extends laterally from edge to edge of the inner surface (62). The second element (64) in the form of a keychain contains a second part (68) in the form of a loop and a second part (70) in the form of a tongue. The second loop portion (68) is formed as a continuous loop around the second staple (56) and is integrally formed with the second tongue portion (70). In this embodiment, the slider element (12) and the keychain elements (14), (64) are formed in one operation in the injection molding tool (50); wherein the injection molding tool has at least one slider (46) slidable to form a portion of each inner surface (26), (62) of the first and second staples (16), (56) and a bottom portion of each portion ( 38), (68) in the form of a loop of elements (14), (64) in the form of a keychain, and each at least one slider (46), which moves to the side, is made with the possibility of orthogonal displacement relative to the path of its insertion.

In fig. Figure 9 illustrates the slider assembly (80) for a double chain. In this embodiment, the slider (12) includes a top guide (72), a middle guide (76), and a bottom guide (74) for guiding a first zipper chain (not shown) and a second zipper chain (not shown) through the slider ( 12). The top rail (72) and the middle rail (76) are separate and secured to each other by a first partition (34), while the middle rail (76) and the bottom rail (74) are separate and secured to each other by a second dividing wall (35). The partitions (34), (35) and guides (72), (76), (74) are configured and positioned to ensure mutual engagement of the first zipper chain and the second zipper chain (not shown) when moving in the first direction and disengaging the first zipper chain and the second zipper chain when moved in the second direction. This embodiment can be used for zipper chains that are the same as or different from the first and second zipper chains. This embodiment is applicable to waterproof zipper chains and the like, in which one zipper chain provides fastening while a second zipper chain provides waterproofing.

In fig. 1 and 10-14 illustrate an alternative embodiment of a zipper slider assembly. The slider assembly contains an element (12) in the form of a slider, wherein the element in the form of a slider is made and placed with the ability to unfasten and fasten a zipper chain (not shown). The zipper chain can be any type known in the art, including a spiral or individual link elements. The slider element (12) comprises an upper surface (24), the upper surface comprising a bracket (16) having a first end (18) and a second end (20), both of which are integrally formed with the upper surface (24), wherein the inner surface (26) of the staple extends in the transverse direction from edge to edge of the staple (16). The first end (18) of the bracket (16) contains a first cross-sectional profile (82), and the second end (20) contains a second cross-sectional profile (84); wherein the second cross-sectional profile is smaller in area than the first cross-sectional profile. Element (14) in the form of a keychain contains a part (38) in the form of a loop and a first part (40) in the form of a tongue. The loop portion (38) is formed as a continuous loop around the staple (16) and is integrally formed with the first tongue portion (40). The loop portion interacts with the cross sections (12B), (12C) of the bracket such that the key fob element (14) has a first angle of movement from side to side of the key fob (94), see FIG. 10, when the key fob element (14) interacts with the first end (18) of the bracket, and the second side-to-side movement angle of the key fob (96), see FIG. 11, when the element (14) in the form of a keychain interacts with the second end (20) of the bracket (16).

The loop portion (38) of the key fob element (14) contains a key fob shaft (86) and a pair of side portions (88) extending between the tongue portion (40) and the key fob shaft (86). The key fob rod (86) has a key fob rod thickness (90) and a key fob rod width (92), see FIG. 13. In at least one embodiment, the thickness and width of the key fob shaft are the same or substantially the same; "substantially" means within manufacturing tolerances for the purposes of this application. However, in a preferred embodiment, the thickness (90) of the key fob shaft is greater than the width (92) of the key fob shaft. This design provides several advantages over the prior art. The design controls the available movement of the key fob element (14) relative to the slider element (12) to better direct forces to allow the slider or zipper to open or close more smoothly. The design also provides sufficient ergonomics for the user by changing the angle of movement from side to side of the key fob in relation to the location of the key fob element (14) relative to the slider element (12). If the slider clasp is freely accessible for opening or closing, the key fob tab (14) may be located at the center or first end of the shackle (16) where the greatest amount of side-to-side movement of the key fob is available. Allowing the user maximum freedom to apply force in arcs, angles, or the like. while moving the key fob tab toward the second end of the shackle, restricts the movement of the key fob tab to better direct forces into alignment with the slider clasp. This design provides the consumer with a better feel and automatically directs the forces needed to operate the slide clasp based on the force immediately required to open or close the slide clasp. Adjusting the gap between the bottom surface of the bracket (16) by adjusting the thickness of the key fob rod (86) provides a design that allows the movement of the key fob element relative to the slider element to be adjusted. The key fob shaft (86) may have a thickness (90) that is substantially the same as the distance between the top surface (24) of the slider (12) and the inner surface (26) of the staple (16). Alternatively, the thickness may be 75% of the distance between the top surface (24) of the runner (12) and the inner surface (26) of the staple (16). In addition, the key fob shaft (86) has a width (92). The width (92) of the key fob rod (86) may be less than the thickness by 25% or more. This design allows for some degree of side-to-side movement of the key fob element (14) depending on the angle of rotation of the key fob element relative to the slider element (12). Thus, the more the keychain element (14) is made parallel to the top surface of the slider element (12), the more side-to-side movement is limited, thereby causing more force to be directed on the slider element (12) in the direction , in which the user wants to move it. This design can be used regardless of the overall shape of the loop portion (38). Thus, the loop portion (38) may be, but is not limited to, polygonal, circular or oval in shape.

The zipper puller assembly (10) may further comprise a connecting link (54) located and formed between the key fob element (14) and the slider element (12). The connector (54) is preferably formed as a solid continuous member that extends around the staple (16) and the connector loop portion (38), connecting the staple (16) to the keychain member (14). In a preferred embodiment, the connecting link (54) is designed similar to the key fob element (14) described above, wherein the loop portion (38) of the connecting link (54) includes a key fob shaft (86) and a pair of side parts (88), extending between the key fob element (14) and the key fob rod (86). The key fob rod (86) has a key fob rod thickness (90) and a key fob rod width (92); the thickness (90) of the key fob rod as well as the width (92) of the key fob rod can be varied as described above to control the movement of the connecting link (54).

With reference to FIG. 1-14, it should be noted that key fobs or sliders may include indicia (78) in the form of logos, shapes, symbols, or the like, which are formed integrally as part of the slider assembly. They also include, but are not limited to, serial numbers, lot numbers, part numbers, patent numbers, trademarks, etc. It should also be noted that the present embodiments are specifically used to form runner assemblies from metal in an injection molding process, and thus a variety of metals can be used, including, but not limited to, zinc, aluminum, magnesium, titanium, copper, brass and suitable combinations thereof.

All patents and publications mentioned in this specification reflect the levels of skill in the art to which the present invention relates. All patents and publications are incorporated herein by reference to the same extent as if each individual publication were specifically and individually incorporated herein by reference.

It should be understood that while a specific form of the present invention has been illustrated, it is not intended to be limited to the specific form or arrangement of parts described and shown herein. It will be apparent to those skilled in the art that various changes can be made without departing from the scope of the present invention, and the present invention should not be construed as being limited to what is shown and described in the specification.

One skilled in the art will appreciate that the present invention is well suited to accomplish the objects and achieve the results and advantages that are mentioned as well as inherent in the present invention. Any compounds, methods, procedures and methods described in

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Claims (8)

herein, currently reflect preferred embodiments, are intended to be illustrative, and are not intended to limit the scope of the present invention. Those skilled in the art may suggest modifications to the present invention and other uses within the scope of the present invention and within the scope of the appended claims. Although the present invention has been described with respect to specific preferred embodiments, it should be understood that the claimed invention should not be unduly limited to such specific embodiments. Accordingly, various modifications to the described embodiments of the present invention that will be apparent to those skilled in the art are intended to be within the scope of the following claims. CLAIM 1. A slider assembly (10) for a zipper, comprising an element (12) in the form of a slider, wherein said element in the form of a slider is made and placed with the ability to unfasten and fasten the chain of the zipper, wherein said element (12) is in the form of a slider comprises a top surface (24), wherein said top surface comprises a bracket (16) having a first end (18) and a second end (20), both of which are integrally formed with said top surface (24), wherein the central portion ( 22) of said bracket (16) is formed integrally with said first end (18) and said second end (20) and extends between them, with the inner surface (26) of said bracket extending transversely from edge to edge of said bracket (16 ), wherein said inner surface is substantially flat and smooth, without overlapping flat surfaces, wherein said first end (18) has a first cross-sectional width and thickness defining a profile (82) of the first end, wherein said second end (20) has a width and thickness defining a second cross-sectional profile (84), said second cross-sectional profile being larger in area than said first cross-sectional profile; element (14) in the form of a keychain, having a part (38) in the form of a loop and a first part (40) in the form of a tongue, and the specified part (38) in the form of a loop is formed in the form of a continuous loop surrounding the specified bracket (16), and is formed integrally with the specified first part (40) in the form of a tongue, while the specified part (38) in the form of a loop of the element (14) in the form of a key fob contains a rod (86) of the key fob and a pair of side parts (88) extending between the specified part ( 40) in the form of a tongue and the specified key fob rod (86), and the specified key fob rod has a thickness (90) of the key fob rod and a width (92) of the key fob rod, and the specified key fob rod of the loop part has such a width and thickness that the surfaces of the rod ( 86) of the key fob and a pair of side parts (88) are in contact with the outer surface of the specified bracket to provide a first angle (94) of movement from side to side of the key fob relative to the specified element (14) in the form of a key fob, when the specified element (14) in the form of a key fob is placed in a first position parallel to said upper surface (24) of said bracket and interacting with said first end (18) of said bracket, and a second angle (96) of side-to-side movement of the key fob when said key fob element (14) is placed in the second position perpendicular to the specified bracket, and interacts with the specified second end (20) of the specified bracket (16), while both the first angle (94) of movement from side to side of the key fob, and the second angle (96) of movement from side to side of the key fob limit the angle the specified element (14) in the form of a keychain relative to rotation around the longitudinal axis passing through the specified bracket (16). 2. The slider assembly (10) for a zipper according to claim 1, characterized in that said thickness (90) of the key fob rod is greater than said width (92) of the key fob rod. 3. The zipper assembly (10) of claim 2, characterized in that said thickness (90) of the key fob shaft is substantially the same as the distance between said top surface (24) of said element (12) in the form runner and said inner surface (26) of said bracket (16). 4. The zipper assembly (10) according to claim 2, characterized in that said thickness (90) of the key fob shaft is more than 90% of the distance between said top surface (24) of said slider element (12) and said inner surface (26) of said bracket (16). 5. The zipper assembly (10) according to claim 2, characterized in that said thickness (90) of the key fob shaft is more than 75% of the distance between said top surface (24) of said slider element (12) and said inner surface (26) of said bracket (16). 6. The zipper assembly (10) according to claim 2, characterized in that said key fob shaft thickness (90) is at least 10% greater than said key fob shaft width (92). 7. The zipper assembly (10) according to claim 2, characterized in that said key fob shaft thickness (90) is at least 25% greater than said key fob shaft width (92). 8. The slider assembly (10) for a zipper according to claim 2, characterized in that said part (38) in the form of a loop of said element (14) in the form of a keychain has a substantially circular cross-sectional shape -