CN102858195B - Electrostatic dissipative garment with interchangeable elastic bands - Google Patents

Abstract

An electrostatic discharge garment has a pair of sleeves (10) which provides elastic contact between the wrist of a wearer and each sleeve (10). Each sleeve (10) has a pair of attachment means (12) consisting of a first attachment means (12a) located adjacent to an opening (13) of each sleeve (10) and a second matching attachment means (12b) located at a distance away from the first attachment means (12a). The first attachment means (12a) and the second matching attachment means (12b) are provided on each sleeve (10) in such a manner that they create a space gap (14) therebetween for receiving an elastic wrist band (11) looped thereon to enable the formation of a pocket when each sleeve (10) is folded with proper alignment to enable the first attachment means (12a) attached and held together with the second matching attachment means (12b). The elastic wrist band (11) having different width can be inserted into the pocket to achieve desirable strength suitable to be used by every individual wearer, easily changed due to its unique design to suit the wrist size of the wearer, and replaced periodically.

Description

Anti-static clothing with replaceable rubber bands

technical field

The present invention relates to an antistatic coat, more specifically, relates to an antistatic (Electrostatic Discharge, ESD for short) garment with excellent and reliable performance in antistatic pollution.

Background technique

Anti-static clothing is usually used in electronic equipment manufacturing to eliminate static electricity from operators. For anti-static clothing, it is important that it is preferably groundable, so that when the anti-static clothing is grounded, it can drain away the static electricity generated by human body movement or from the internal clothing due to electrostatic induction and float or fix it on the anti-static clothing. Static electricity on static clothing. The electrostatic discharge channel on the anti-static clothing can be realized by the groundable points provided on certain points or areas on the work clothes, as disclosed in US Patent No. 5,548,469; or through the sleeve collar of the anti-static clothing, such as PCT application Disclosed in No. PCT/MY2009/000061 and WO2009139617.

Japanese patent application JP2000178810A discloses in the representative illustration of Figure A (1) an antistatic garment with conductive fibers that are in contact with the human wrist under (rubber band) pressure.

However, when the rubber band relaxes due to continuous stretching "deformation" during daily use, regular washing or heat drying, etc., the entire work suit needs to be replaced due to intermittent disconnection or failure of the electrical contact of the cuff.

US Patent No. 4,596,053 discloses in the representative view of Figure A (2) how the conductive loop around the wrist is attached to the cuff of the overalls using fasteners (metal clips).

However, if the worker "forgets" to clamp the metal clip, the body grounding system can fail.

US Patent No. 4,868,710 discloses a workwear in the representative view of Figure A (3), wherein a conductive wristband 18 is sewn on the cuff 12 of the workwear. As shown in FIG. 5, the wrist strap 8 has clips 32 and 34, which can tighten the wrist strap 18 on the wrist of a person.

However, if a worker "forgets" to clamp the clips together, the body grounding system can malfunction.

A typical anti-static clothing that is worn and grounded through the cuffs, whose cuffs tightly and comfortably wrap around the human wrist with the help of an inseam rubber ring. Figure 1 shows this technique used in the applicant's previous PCT application for improvement of anti-static clothing (application number PCT/MY2008/000048).

Chinese utility model patent (CN201185669Y) discloses an anti-static dust-proof clothing with adjustable tightening parts, which is equipped with adjustable elastic tightening components on the waist, cuffs, feet and other parts of the anti-static dust-proof clothing. At the position where the antistatic and dustproof clothing needs to be tightened, an adjustable elastic tightening member is provided, and the elastic tightening member is a belt-shaped body made of elastic material, and several The through hole and the part of the clothing that need to be adjusted can be inserted into the symmetrical holes at both ends of the strip to fix the strip.

In addition to ensuring good contact between the wearer's wrist and the sleeves of the overalls, the comfortable and snug fit cuff design also ensures that any foreign contaminants from the sleeves or the operator's body or underwear are prevented from falling into the electronics assembly area.

However, there are also some drawbacks to using such conventional work clothes with elasticated cuffs. Since the elastic rubber bands are sewn into the cuffs to give the cuffs elasticity, these rubber bands will age and loosen over time. This is because the elastic rubber ring will deform and loosen over time during daily use, constant stretching during regular washing, and repeated stretching during putting on and taking off work clothes. When this occurs, electrical contact between the garment and the wearer is no longer effectively maintained, especially in manufacturing environments with relatively dry relative humidity. Due to the intermittent destruction of the charge discharge channel, the anti-static protection will be unreliable. In addition, when the cuffs become slack, contaminants from underwear or the person may fall out and contaminate the electronics assembly area.

Another problem arises when work clothes are repeatedly worn by someone with relatively thick wrists and then worn by someone with thinner wrists. The rubber band will be overstretched by the former. In addition, people who wear small-sized work clothes may also have widely different wrist sizes, which can lead to undesirable logistical problems in distributing appropriate-sized anti-static clothing to operators in labor-intensive electronics manufacturing.

The crux of the matter is knowing when the sleeve contact will fail. Since such failures can occur at any point during the production process, current workwear designs are highly unreliable. Setting the anti-static protection continuous monitoring system on the work clothes will further greatly increase the operating costs of the highly competitive and cost-sensitive electronic assembly industry.

For those skilled in the art, an obvious solution is to seek a more durable or elastic rubber band. However, this solution is only suitable for prolonging the life of the rubber band and is not an effective solution to the problem. The problem of erratic failure will still exist, especially in an environment with dry relative humidity and operators or wearers with dry skin.

Therefore, the industry is eager to find a more effective and feasible solution, which adopts more economical means and can ensure the integrity and reliability of the grounding. Further research is therefore required to provide more reliable and practical solutions.

Other objects of the invention appear throughout the specification.

Contents of the invention

The present invention provides a replaceable elastic wrist strap that can be easily attached to or removed from the sleeve of a work garment by means of a pair of attachment means. The attachment means is preferably a pair of Velco tapes. Its purpose is to extend the durability and warranty period of anti-static work clothes for economic gain and commercial attractiveness.

The replaceable elastic wrist strap can be attached or looped around the sleeve in various ways, such as by using Velcro, snap buttons, standard button or zipper type fasteners, and the like. The most preferred way is to use Velcro.

In a first embodiment of the invention, a pair of Velcro strips are sewn on the outside of the sleeves of the overalls in such a way that a gap is provided in the space between the pair of Velcro strips which can accommodate an elastic wrist strap looped around the sleeve. space. When the sleeves are turned outward, the pair of Velcro strips are properly aligned and gathered to form a pocket for enclosing the rubber band therein, thereby forming a sleeve with replaceable elastic.

Instead, in a second embodiment of the invention, an additional flap is sewn onto the sleeve in such a way that a pocket is formed in which the elastic can be enclosed. Such elastic rubber rings of various sizes can be easily placed in the pocket and easily and simply closed by Velcro. This simple design also ensures that the rubber ring can be easily replaced when required, eliminating the need to replace the entire coverall, thus resulting in considerable cost savings in everyday utility.

The invention obtains an easy-to-management automatic fail-safe compliance system. Once the worker has selected the correct size rubber band, no further or special instructions are required. Workers only need to put it on the work clothes to use, so simple. This solution solves the problem in the prior art that more monitoring and control needs to be performed on the grounding system from the worker's body to the ground, and simplifies the anti-static control process. The invention is particularly applicable to labor-intensive assembly operations in general electronics manufacturing.

Description of drawings

Various advantages, aspects and innovative features of the present invention will be set forth in detail in the following description and accompanying drawings. In the drawings, the same reference numerals are used for corresponding parts throughout the several views.

Shown in Fig. 1 is the partial view of the hand that wears antistatic overalls in the prior art;

Fig. 2 is a schematic diagram of an antistatic overalls with a replaceable rubber band according to a first embodiment of the present invention, as shown in Figs. 2a to 2c;

Fig. 3 is a schematic diagram of an antistatic overalls with a replaceable rubber band according to a second embodiment of the present invention, as shown in Figs. 3a to 3c;

Fig. 4 is a schematic diagram of different types of elastic wristbands of the present invention, as shown in Figs. 4a to 4c.

Detailed ways

Fig. 2 shows the port portion of the sleeve 10 of the antistatic garment with the replaceable elastic wrist strap 11 according to the first embodiment of the present invention. a pair of attachment means 12 having a first attachment means 12a located near the port 13 of the sleeve 10 and a second attachment means 12b located at a distance from the first attachment means 12a, A space 14 is thus provided between the first attachment means 12a and the second attachment means 12b, so that the elastic wristband 11 can be looped around the sleeve. Attachment means 12 may be any suitable attachment means that can be adhered together to enclose elastic wristband 11 in spacer 14, such as Velcro, snap buttons, standard button or zipper type fasteners, and the like. The zipper type fastening includes a pair of interlocking members enabling locking and unlocking of the fastening. The preferred attachment means 12 employed in the present invention is a Velcro strip, for which purpose such attachment means 12 will be further described below.

The first and second attachment means 12a, 12b of the hook and loop type attachment means are male and female straps, respectively. As shown in Figure 2a, a first attachment means 12a is sewn around the periphery of the sleeve 10 near the sleeve port 13, and a second attachment means 12b is also sewn around the periphery of the sleeve 10 at a distance from the first attachment means 12a. As shown in FIG. 2 b , the elastic wristband 11 is then looped around the sleeve 10 at a space 14 of the sleeve 10 .

As shown in Figure 2c, the first attachment means 12a is drawn towards the second attachment means 12b by turning the port of the sleeve 10 outwards, and then pressing down in proper alignment so that they can be adhered, the pair of attachment means 12 are glued together to form a pocket. The elastic wristband 11 is enclosed in this pocket of the sleeve 10, thereby constituting the elastic sleeve overalls of the present invention.

For each individual wearer, elastic rubber rings of different widths can be used according to the user's situation to obtain the desired strength. Due to its unique design, the elastic wristband 11 enclosed in the sleeve can be easily replaced to suit the size of the wearer's wrist. The rubber ring 11 can be made of natural or synthetic rubber or mixed materials to provide proper stretchability.

The invention also allows rubber bands of different circumferences to be placed in the pocket. This accommodates different wrist sizes. This feature is very important because prior art designs often use elastic bands of fixed circumference, one size fits all work clothes. When people with thicker wrists wear the work clothes, the rubber ring will be overstretched, which will reduce the elasticity and service life of the rubber ring and reduce the reliability of the work clothes. In the present invention, the elastic rubber ring can be easily put in and taken out due to the unique design of the sleeve, so that the elastic rubber ring can be replaced regularly. How often these elastic rubber rings can be replaced as part of operational maintenance before any possible failure occurs.

In another embodiment of the present invention, as an alternative, an additional flap 15 is attached to the sleeve 10 to form a pocket that can enclose the elastic rubber ring 11 . This can be achieved by sewing the hem 15 in a circular loop on the sleeve 10 at a predetermined distance from the cuff, as shown in Figure 3a. A pair of Velcro strips are then sewn on in a similar manner as before, with the opposite sides facing inwardly of each other to provide a spacer 14 . The straps 12 may be press adhered together to form a pocket for enclosing the elastic wristband 11 around the spaced space 14 of the sleeve 10 as shown in FIGS. 3b and 3c. This solution is to add a circle edge on the sleeve in essence, to provide another option to achieve the purpose of the replaceable rubber ring of the present invention.

In addition, the two embodiments described above can also be applied to the inner side (back side) of this type of antistatic work clothes. When the work clothes are worn on the person, in order to enable the port 13 of the sleeve 10 to be folded inwardly and hidden in the sleeve, a pair of attachment devices 12 are sewn inside near the port 13, surrounding the sleeve 10, as shown in Figure 4a, or attached A hem 15 is attached to the inside of the sleeve 10 (not shown) to form a pocket for enclosing the elastic wristband 11.

In order to place the elastic wristband 11 on the sleeve before wearing the overalls, the wearer can turn the sleeves 10 of the overalls inside out so as to easily wrap the elastic wristband 11 around the spacer 14 . The pair of attachment means 12 are then adhered together by folding inwardly the port portion of the sleeve 10 to form a pocket, as shown in Figure 4b. The wristband 11 is enclosed in a pocket of the sleeve 10, as shown in Figure 4c.

The new workwear design overcomes the deficiencies of existing technologies and economically provides safe and reliable electrostatic protection. In conclusion, while the invention has been described in connection with specific forms and embodiments, it will be apparent that various modifications can be made therein without departing from the scope of the invention.

Those skilled in the art should understand that the present invention can also be easily implemented in other specific forms without departing from the essential characteristics of the present invention. Therefore, the embodiments provided here are only for illustration and not limitation, the scope of the present invention is defined by the claims, not limited by the foregoing description, and all changes made accordingly also fall within the scope of the claims.

Claims (15)

1. An antistatic garment having at least one sleeve (10) maintaining elastic contact between the wearer's wrist and said sleeve (10), said sleeve (10) comprising a pair of attachment means (12 ), characterized in that the pair of attachment means (12) comprises a first attachment means (12a) near the port (13) of the sleeve (10) and a distance from the first attachment means (12a) Matching second attachment means (12b), thereby forming a space between the first attachment means (12a) and the second attachment means (12b) for accommodating the elastic wristband (11) around it ( 14) such that when said sleeve (10) is folded in proper alignment to adhere the first attachment means (12a) and the mating second attachment means (12b) together, a pocket is formed. 2 . The antistatic clothing according to claim 1 , wherein the pair of attachment devices include nylon tapes, snap buttons, standard buttons and zippers. 3 . 3. The antistatic clothing according to claim 2, wherein the pair of attachment devices are a pair of nylon hook and loop fasteners. 4. The antistatic garment according to claim 3, characterized in that, the pair of attachment devices are sewn around the outside of the sleeve (10) of the garment. 5. The antistatic clothing according to claim 3, characterized in that, the pair of attachment devices are sewn around the inner surface of the sleeve (10) of the clothing. 6. The anti-static clothing according to claim 1, characterized in that, the elastic wristband (11) is a rubber ring made of natural or synthetic rubber or mixed materials to provide sufficient stretchability. 7. The antistatic clothing according to claim 1, characterized in that, the clothing is an overcoat. 8. An antistatic garment having at least one sleeve (10) maintaining elastic contact between the wearer's wrist and said sleeve (10), characterized in that said antistatic garment has a pair of attached Apparatus (12), said sleeve (10) comprising a flap attached to said sleeve (10), said attachment means (12) comprising a first an attachment means (12a) and matching second attachment means (12b) on the side of said hem (15) facing said first attachment means (12a), whereby said first attachment means (12a) and the second attachment means (12b) form a space gap (14) for accommodating the elastic wristband (11) around it, so that when said hem (15) is folded up to the sleeve (10) in proper alignment ) such that the first attachment means (12a) and the second attachment means (12b) are adhered together to form a pocket. 9. The antistatic garment according to claim 8, characterized in that, the hem (15) is sewn on the outside of the sleeve (10) of the garment in the form of a ring. 10. The antistatic clothing according to claim 8, characterized in that, the hem (15) is sewn on the inner surface of the sleeve (10) of the clothing in the form of a ring. 11 . The antistatic clothing according to claim 8 , wherein the pair of attachment devices include Velcro, snap buttons, standard buttons and zipper type fasteners. 12 . The antistatic clothing according to claim 11 , wherein the pair of attachment devices are a pair of nylon hook and loop fasteners. 13 . 13. The antistatic clothing according to claim 12, characterized in that, the first attachment device (12a) is sewn around the port (13) of the sleeve (10), and the second attachment device ( 12b) is sewn around the edge (15) on the side facing the first attachment means (12a) facing the first attachment means (12a). 14. The antistatic clothing according to claim 8, characterized in that, the elastic wristband (11) is a rubber ring made of natural or synthetic rubber or mixed materials to provide sufficient stretchability. 15. The antistatic clothing according to claim 8, characterized in that, the clothing is an overcoat.

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