Anti-off device, and protective hat having the same

Abstract

Disclosed are an anti-off device and a protective hat having the anti-off device. The protective hat includes a hat body, protective goggles, a binding strap and an anti-off device. The hat body has a slot; the protective goggles and the binding strap are bundled altogether with the hat body; the anti-off device includes an anti-off body and snap arm. The anti-off body has a passage; a snap arm integrally coupled to the anti-off body, and the snap arm is inserted into the slot and the snap body is detachably engaged with the hat body, and the binding strap is disposed in the passage, such that when the protective goggles are moved upward or downward, the binding strap is still limited by passage to achieve the anti-off effect.

What is claimed is: 
     
         1 . An anti-off device for a protective hat, and the protective hat comprising a hat body with a slot and a snap portion, and protective goggles and a binding strap being bundled with the outer side of the hat body, and the anti-off device comprising:
 an anti-off body, having a passage; and   a snap arm, elastically and bendably coupled to the anti-off body and having a snap body, and the anti-off body of the snap arm being passed and inserted into the slot and the snap body being detachably engaged with the snap portion and fixed to the outer side of the hat body, and the binding strap being disposed in the passage;   thereby, when the protective goggles are moved downward and worn on a user's face and then moved to the outer side of the hat body, the binding strap is still limited by the passage to provide an anti-off effect.   
     
     
         2 . The anti-off device as claimed in  claim 1 , wherein the snap arm has a bent portion at an end thereof, and the snap arm is coupled to the anti-off body by the bent portion, and the snap arm is skewed with respect to the anti-off body by the bent portion, and the snap arm, and an included angle between the bent portion and the anti-off body is increased or decreased by the skew. 
     
     
         3 . The anti-off device as claimed in  claim 1 , wherein the anti-off body comprises a carrier plate and a clamping plate with an interval apart from each other, and the anti-off body has the passage formed between the carrier plate and the clamping plate, and the passage has two openings configured to be corresponsive to the lengthwise direction of the binding strap, and the binding strap is passed through the two openings and disposed in the passage. 
     
     
         4 . The anti-off device as claimed in  claim 3 , wherein the passage has a height greater than or at least twice as large as the width of the binding strap, and the binding strap is displaced within the height of the passage by moving the protective goggles upward or downward. 
     
     
         5 . The anti-off device as claimed in  claim 3 , wherein the clamping plate comprises two clamping plate members with two ends which are far apart with each other and coupled to the carrier plate, the two clamping plate members, and a notch formed between two ends which are close to each other, and the binding strap is entered from the notch into the passage. 
     
     
         6 . The anti-off device as claimed in  claim 1 , wherein the snap arm comprises a base plate and a tongue, and an end of the base plate is elastically and bendably coupled to the anti-off body, and an end of the tongue is elastically and bendably coupled to the other end of the base plate, and the other end of the tongue has the snap body protruded therefrom. 
     
     
         7 . The anti-off device as claimed in  claim 6 , wherein the snap arm further comprises a pair of support arms coupled to the other end of the base plate, and the pair of support arms are supported by two opposite inner walls of the slot respectively. 
     
     
         8 . The anti-off device as claimed in  claim 6 , wherein the tongue has an engaging side and a moving side opposite to each other, and the snap body is protruded from the engaging side, and an activity space is defined between the adjacent inner walls of the moving side and the slot, and the tongue in the activity space is elastically bent to the snap body for separating the snap portion. 
     
     
         9 . The anti-off device as claimed in  claim 6 , wherein at least one remaining part which has not been coupled is formed at the other end of the base plate, and abuts against and connects the hat body, so as to engage the snap body to the snap portion. 
     
     
         10 . The anti-off device as claimed in  claim 1 , wherein the snap arm has an end elastically and bendably coupled to the anti-off body, and the snap arm has the snap body protruded from the other end thereof, and the snap portion is protruded from the other end of the snap arm and provided for a user to toggle for disengagement. 
     
     
         11 . A protective hat having an anti-off device, comprising:
 a hat body, having a slot and a snap portion;   a pair of protective goggles and a binding strap, surroundingly coupled to and jointly bundled with the outer side of the hat body; and   an anti-off device, comprising:
 an anti-off body, having a passage; and 
 a snap arm, elastically and bendably coupled to the anti-off body and having a snap body, and the anti-off body of the snap arm being passed and inserted into the slot and the snap body being detachably engaged with the snap portion and fixed to the outer side of the hat body, and the binding strap being disposed in the passage; 
   thereby, when the protective goggles are moved downward and worn on a user's face and then moved to the outer side of the hat body, the binding strap is still limited by the passage to provide an anti-off effect.   
     
     
         12 . The anti-off device as claimed in  claim 11 , wherein the snap arm has a bent portion disposed at an end thereof, and the snap arm is coupled to the anti-off body by the bent portion, and the snap arm is skewed with respect to the anti-off body by the bent portion, and an included angle is defined between the snap arm, the bent portion and the anti-off body and increased or decreased by the skew. 
     
     
         13 . The anti-off device as claimed in  claim 11 , wherein the anti-off body comprises a carrier plate and a clamping plate arranged with an interval apart from each other, and the passage is formed at the interval between the carrier plate and the clamping plate, and the passage has two openings configured to be corresponsive to the lengthwise direction of the binding strap, and the binding strap is passed through the two openings and disposed in the passage. 
     
     
         14 . The anti-off device as claimed in  claim 13 , wherein the passage has a height greater than or at least twice as large as the width of the binding strap, and the binding strap is displaced within the height of the passage by moving the protective goggles upward or downward. 
     
     
         15 . The anti-off device as claimed in  claim 13 , wherein the clamping plate comprises two clamping plate members having two ends which are far apart from each other and coupled to the carrier plate, and a notch is formed between two ends of the two clamping plate members which are close to each other, and the binding strap is entered from the notch into the passage. 
     
     
         16 . The anti-off device as claimed in  claim 11 , wherein the snap arm comprises a base plate and a tongue, and the base plate has an end elastically and bendably coupled to the anti-off body, and the tongue has an end elastically and bendably coupled to the other end of the base plate, and the other end of the tongue has the snap body protruded therefrom. 
     
     
         17 . The anti-off device as claimed in  claim 16 , wherein the snap arm further comprises a pair of support arms coupled to the other end of the base plate, and supported by of two opposite inner walls of the slot respectively. 
     
     
         18 . The anti-off device as claimed in  claim 16 , wherein the tongue has an engaging side and a moving side opposite to each other, and the snap body is protruded from the engaging side, and an activity space is defined between the moving side and the slot, and the tongue in the activity space is elastically bent to the snap body for separating the snap portion. 
     
     
         19 . The anti-off device as claimed in  claim 11 , wherein the outer side of the hat body has a protrusion, and the slot is formed at the protrusion, and the snap arm comprises a base plate and a tongue, and the base plate has an end elastically and bendably coupled to the anti-off body, and the tongue has an end elastically and bendably coupled to the other end of the base plate, and the other end of the tongue has the snap body protruded therefrom, and the other end of the base plate has at least one remaining part which is not coupled, and the at least one remaining part abuts against and connects the protrusion, so that the snap body is engaged to the snap portion appropriately. 
     
     
         20 . The anti-off device as claimed in  claim 11 , wherein the snap portion is a hat's lower edge of the hat body, and the snap arm has an end elastically and bendably coupled to the anti-off body, and the snap body is protruded from the other end of the snap arm, and the other end of the snap arm is protruded from the hat's lower edge and provided for a user to toggle for disengagement.