Apparel – Guard or protector – For wearer's head
Reexamination Certificate
1999-03-12
2001-10-16
Neas, Michael A. (Department: 3741)
Apparel
Guard or protector
For wearer's head
Reexamination Certificate
active
06301721
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a shield fixing structure which is installed in a full-face type helmet and an open face type helmet which a driver wears helmet when he or she rides on various kinds of motorized vehicles such as motorcycle, automobile or others.
2. Description of the Prior Art
As Japanese Patent Publication No. Hei 6-89483, the present applicant has filed as a proposal a fixing structure in which a shield can be fixed or disengaged without removing the shield pressing cover. Under this invention, all the disadvantages that the shield could not be fixed or disengaged unless the shield pressing cover was removed, i.e. disadvantages that the screws for use in fixing the shield pressing cover are lost or the engaging members formed at the shield pressing covers are damaged have been resolved.
However, the fixing structure in the aforesaid invention is operated such that after the shield is rotated up to its upper limit position, the portion near the shield fixing section is held by a hand, it is moved in such a direction as one exceeding the upper limit position while the fixing section is being lifted up in such a direction as one moving away from an outer surface of the base plate, the shield stopper section is disengaged and subsequently as the shield is pulled out toward an opening section, resulting in that the shield fixing section is guided by a slant surface of a guiding protrusion at the base plate and concurrently the fixing hole at the fixing section is disengaged from the supporting shaft, reaches the top point of the supporting shaft, thereby the shield pressing cover is pushed wide in an outward direction, a clearance through which the shield can pass is formed between the cover and the top point of the supporting shaft and then the shield can be easily removed under utilization of this clearance. That is, an operation differing from a normal opening or closing operation is applied to the shield by a hand of the user against the shield to remove the shield.
However, in the case that the aforesaid operation is performed by a hand of a user and the user is not familiar with a removing operation, there occurs sometimes that the shield can not be removed smoothly in accordance with a degree of applied force and so it is strongly requested to make a further smoothness in this removing operation.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a fixing structure in which a further smoothness in removing operation for the aforesaid shield can be attained and the shield can be removed easily and rapidly by everybody without being dependent on the user.
In order to accomplish the aforesaid object, the present invention has employed the following technical means.
A force directed in a direction moving away from a main body of the helmet differing from a normal opening or closing operation of the shield in respect to the shield is applied near fixing portions of the shield at a predetermined position under a state in which resilient shield pressing covers are engaged with a shield rotatably pivoted around supporting shafts of base plates fixed to right and left side surfaces of a main body of the helmet, the main body of the helmet or the base plates, the shield is removed from the supporting shafts of the base plates, the shield pressing covers are pushed wide in an outward direction to form a clearance between the cover and a top end of the supporting shaft where the shield can pass through it and the shield is engaged with or disengaged from the helmet, operating levers for disengaging the fixing portions of the shield from the main body of the helmet, removing them from the supporting shafts of the base plates and having slant surface sections forming a clearance between the top ends of said supporting shafts and the shield pressing covers and pushing-up surface sections for moving the shield fixing portions in the clearance are rotatably or slidably arranged between the main body of the helmet and the shield pressing covers so as to facilitate a removal of the shield.
As a practical structure of the aforesaid operating levers to be rotated, for example, there may be provided the structure in which its extremity end has the operating section projected from the opening and its rear end has a supporting section pivotally supported at the base plate and an assembly in which a slant surface section for generating a force applied in a direction repelling from the main body of the helmet and a pushing-up surface section for moving the fixing section to the aforesaid clearance are co-operatively arranged at the shield fixing section is installed near the supporting section.
In the case of this operating lever, as its operating section is rotated in the same direction as an opening direction of the shield, the slant surface section arranged at the supporting section enters between the base plate and the shield fixing section so as to cause the fixing section to be moved away from the base plate along an axial line of the supporting shaft. Then, the fixing section is moved away from the supporting shaft to cause the shield pressing cover to be pushed wide in an outward direction. Then, a clearance through which the fixing section can pass is formed between the pushed and widened shield pressing cover and the supporting shaft. Further, as the operating section is operated, the pushing-up surface section pushes up the aforesaid fixing section into the clearance and causes it to reach the top point of the supporting shaft.
In addition, as a practical configuration of the aforesaid operating lever which is slid, for example, there may be employed an assembly of an operating lever in which a sliding section having an operating section projected from an opening at its extremity end, a slant surface section for generating a force acted in a direction repelling from the main body of the helmet near the shield fixing section at its rear end and a pushing-up surface section for moving the fixing section in the aforesaid clearance can be slid and arranged in such away that a biasing force is acted in such a direction as one in which the sliding section is moved away from the shield fixing section.
In the case of this operating lever, as the sliding section is slid, the slant surface section arranged at the sliding section enters between the base plate and the shield to cause the fixing section to be repelled from the base plate along the axial line of the supporting shaft. Then, the fixing section is removed from the supporting shaft to cause the shield pressing cover to be pushed wide in an outward direction. Thus, a clearance through which the fixing section may pass is formed between the pushed and widened shield pressing cover and the supporting shaft. In addition, as the operating section is slid, the pushing-up surface section pushes up the aforesaid fixing section into the clearance and causes it to reach the top point of the supporting shaft.
The aforesaid operating lever is arranged in such a way that it may be projected out of or entered into the opening formed by the base plate and the shield pressing cover and the operating lever may be projected by a projecting mechanism arranged to cause the operating lever to be projected out of the aforesaid opening as the shield is opened in respect to the operating lever.
As a practical configuration of the aforesaid operating lever, it is possible to arrange an assembly which is provided over the operating lever and the shield, for example, and the assembly is comprised of a pushing piece arranged in the shield and a pushing section arranged near the aforesaid supporting section, pushed by the aforesaid pushing piece to cause the aforesaid operating section to be projected out of the aforesaid opening as the shield is opened from a location near the predetermined position to the predetermined position.
In the case of this projecting-out mechanism, as the shield is opened, the pushing section is pushed with the opening shield and along with this ope
Dykema Gossett PLLC
Neas Michael A.
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