JP3108274U - Vehicle seat head guard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle on a general public road to which the road traffic law is applied only by attaching and detaching a head guard to a vehicle seat by providing a head gart so as to be detachably attachable to the vehicle seat. It is possible to drive safely and legally freely and at high speeds without restrictions on speed, even in the car seat.
SOLUTION: A head guard is detachably provided at a position corresponding to both sides of a passenger's head in an upper end direction of a seat bag of a vehicle seat.
[Selection] Figure 1

Description

  The present invention relates to a head guard for a vehicle seat such as an automobile, and more particularly to a racing automobile or a sports car type automobile in which two vehicle seats are provided separately in the left-right direction in one vehicle. In order to make it possible to drive and operate safely even in automobile circuit fields, and to make it possible to drive legally and safely as a vehicle that complies with the legal standards even on roads to which the Road Traffic Law applies, The present invention relates to a head guard for a vehicle seat that can be easily attached to and detached from a seat bag for a vehicle seat.

  Conventional vehicles, such as automobiles, that travel on public roads to which the Road Traffic Law has been applied have been equipped with vehicle seats that comply with legal standards in order to be able to drive safely. A seat back with tough materials that can withstand strong impacts caused by collision accidents and shock-absorbing shock absorbers so that the safety of passengers can be ensured no matter what the situation is However, race cars and sports car type cars in general vehicles equipped with this type of vehicle seat are not only public roads to which the Road Traffic Law applies, but also cars. Even at a circuit track, it is required to drive safely and safely as a hobby or amusement as a competition in a motor vehicle race, or as a hobby or amusement. For safe driving of automobiles to perform high-speed driving, passengers including the driver are required to hold the body posture with the head fixed to the seat back of the vehicle seat. A special vehicle seat with a head guard that can be fixed by sandwiching the head of the passenger from both sides at positions corresponding to both sides of the head of the passenger in the upper end direction of the seat back has been proposed. ing.

However, the rider's head is fixed to the seat back of the vehicle seat in order to safely drive and drive a racing car or a sports car type car that drives and runs at a speed limit in a conventional automobile circuit. In order to maintain the body posture in a state, a special vehicle seat provided with a head guard that can be fixed by sandwiching the passenger's head from both sides in the upper end direction of the seat back Although it is a necessary equipment for a safe driving of a car without speed limitation as a competition race or as a hobby or amusement, the general public such as a car traveling on a public road to which the Road Traffic Law applies The vehicle
As a result of fixing the head of the driver who steers the car, the special vehicle seat provided with such a head gart, in order to drive the car safely on a general public road, It is indispensable to pay attention to all directions including not only the front-rear direction but also the left and right sides and the diagonal front-rear direction. If this is obstructed, safe driving becomes impossible, and thus the head guard As a result, the special vehicle seat with a head guard is considered to be nonconforming due to vehicle safety standards and other legal standards, and the road traffic law is applied to general public roads. This type of racing car or sports car type car can be used on automobile circuit grounds and on general public roads where the Road Traffic Law is applied. In order to drive a car safely and legally, prepare a normal vehicle seat that complies with legal standards such as vehicle safety standards and a special vehicle seat with a head guard separately in advance. , According to the place where the car is driven, that is, whether it is a general public road or an automobile circuit, a special vehicle seat provided with a head guard each time, and a normal vehicle seat, There is a problem that the vehicle seat must be replaced and mounted, and this vehicle seat replacement mounting operation requires considerable skill.

  In addition, traveling on a general public road to which the road traffic law is applied, from an automobile circuit track, with a special vehicle seat provided with a head guard disposed as a vehicle seat such as an automobile, Although it is prohibited as a violation of the legal standards such as the Road Traffic Law and Vehicle Safety Standards, race cars that are handled and run by specialists or special technicians have considerable skill in work technology. Therefore, there is almost no problem in performing vehicle seat replacement work each time. However, car enthusiasts, etc. at automobile circuit stadiums have limited speed for sports car type cars as hobbies and entertainment. If you want to drive safely without using a car, it would be excessively expensive to prepare a special vehicle seat with a head guard separately. It requires a lot of skill to replace and install and fix the vehicle seats to the normal vehicle seats and special vehicle seats with head guards each time. For this reason, ignoring safety in an automobile circuit field, driving with no normal vehicle seat without head guard equipment, driving without speed limitation, or once Inducing the illegal act of driving on the general public road to which the Road Traffic Law applies, with the special vehicle seat provided with the head guard replaced and installed, as it is, As a result, there has often been a problem of causing serious car accidents and causing traffic congestion.

In such a vehicle seat, a rider including a driver holds the head in order to safely drive and drive a motor vehicle such as a sports car type or a race car in a car circuit place without speed limitation. In order to require the equipment of the head guard that can hold the body posture in a state fixed to the seat back of the vehicle seat, in the position corresponding to the both sides of the head of the rider in the upper end direction of the seat back, A special vehicle seat with a head guard that can clamp and fix the rider's head from both sides is provided with a head guard so that it can travel on roads to which the Road Traffic Law applies. Without removing and replacing the vehicle seats one by one, simply removing only the head guard that obstructs the driver's field of view, As a vehicle seat adapted to regulations standards etc., vehicle seat as out to be available, there is a problem that does not provide all.
Japanese Patent No. 3518828

  The problem to be solved is that the road traffic law also applies to cars such as two-seat type sports cars and racing cars that are installed in the driver's cab in the left-right direction in the driving direction. In order to enable safe and legal driving on the applicable public roads, the vehicle seats, specially designed vehicle seats with head guards, and normal head guards are not provided. The vehicle seat must be replaced each time.

  The present invention solves the problems in the prior art from the left and right sides of the rider's head to a vehicle seat that conforms to a legal standard such as a vehicle safety standard installed in a sports car type vehicle or a racing vehicle. To provide a head guard for a vehicle seat that can be solved by detachably attaching the head guard to the upper end direction of the seat back of the vehicle seat so as to be sandwiched loosely.

  In order to solve the above-mentioned problems, the present invention devised a head guard at a position corresponding to the left and right side directions of the head of the rider's head of a vehicle seat disposed in a sports car type vehicle or a racing vehicle, The vehicle seat is formed so as to be detachably attachable to the upper end of the seat back of the vehicle seat.

According to the device of claim 1,
The head guard can be mounted, fixed and detachable at positions corresponding to both sides of the head of the passenger in the upper end direction of the seat bag of the vehicle seat. Since it can be protected in a state sandwiched from the direction, it can be driven freely and safely without limitation of speed in the automobile circuit field, and only the head guard is detachably provided in the seat bag of the vehicle seat. Therefore, if the head guard is removed, it is possible to safely and legally drive and drive a public road to which the road traffic law is applied as it is as a vehicle seat that complies with regulations such as vehicle safety standards.

According to the device of claim 2,
Since both ends of the head guard are placed almost at the same level as the rider's face from the seat bag of the vehicle seat or slightly protrude to a position ahead of the face, the head guard is placed on the rider's head. Can be completely protected from both the left and right sides, and even if an accident such as a collision of vehicles traveling with each other, an obstacle or vehicle touching each other, or a fall occurs, the rider's head Complete protection.

According to the device of claim 3,
Since the head guard is used to protect the passenger's head by squeezing it from both sides of the passenger's head, the passenger's head will be loosened by the head guard even if an accident occurs when the vehicle is on board. Since the head is sandwiched, there is no fear of the head easily jumping outward from the head guard, and high safety can be ensured.

According to claim 4 of the head guard of the vehicle seat of the present invention,
Since the head guard is fitted in a state in which the seat bag of the vehicle seat is sandwiched from the outside direction, attachment / detachment for attaching and fixing the head guard to the vehicle seat can be easily realized.

According to the device of claim 5,
Since the head guard is formed in a substantially U-shape as a whole and is provided with reinforcing rib bodies projectingly around its entire peripheral side edge, the strength of the head guard is increased accordingly, and further A safe head guard can be realized.

According to claim 6 of the head guard of the vehicle seat of the present invention,
Since the fixing bolt protrudes from the outer surface of the seat back, the fixing bolt is inserted into the bolt insertion hole drilled in the head guard, and the nut is fixed to the fixing bolt. The seat guard can be securely and firmly attached to the seat bag, and the head guard can be easily attached and detached simply by screwing or unscrewing the nut to the fixing bolt.

According to the device of claim 7,
The fixing bolt protruding from the seat back is protruded from the mounting recess, and a fitting recess with a bolt insertion hole drilled in the central direction is provided on the opposite side of the head guard. Since the fitting recess of the guard is fitted and brought into close contact, the fixing bolt is inserted into the bolt insertion hole, and the nut is fixed to the fixing bolt to fix the head guard to the vehicle seat. Can be easily realized, and can be detachably attached to the head guard or the vehicle seat firmly and securely.

According to the device of claim 8,
The nut provided in the fixing bolt so that it can be fixed and detachable is a cap nut and is provided so that the cap nut does not protrude from the fitting recess provided in the head guard. Since the cap nut with the head guard attached and fixed to the seat back does not protrude outward from the fitting recess, there is no sense of incongruity, and the cap nut does not protrude outward of the outer surface of the head guard. The nut does not come into contact with the occupant and does not hinder the replacement work of the vehicle seat, and higher safety can be realized.

According to the device of claim 9,
The fixing bolt that protrudes from the seat back is fixed to the head guard bolt because the embedded fixing flat plate that is provided integrally with the head of the bolt is embedded and fixed within the thickness of the seat back. Even if it is inserted into the insertion hole and the nut is strongly tightened and fixed to the fixing bolt, the fixing bolt does not rotate even by the tightening operation, so that even stronger tightening and fixing can be realized. .

According to the device of claim 10,
Since the head guard is a rod-shaped body formed entirely of metal in a U-shape, the head guard is strong, safe and high in manufacturing, and can be provided at a low cost.

According to the device of claim 11,
Since a through groove or a plurality of through holes are drilled in both directions of the head guard, even in a vehicle seat with the head guard attached and fixed, the head guard is loosely fixed so as to sandwich the head of the passenger from both sides, Even when driving in an automobile circuit field, it is possible to secure a field of view in both the left and right directions through through grooves or through holes drilled in both directions of the head guard.

  The head guard for a vehicle seat according to the present invention is detachably provided so that the head guard can be attached to and fixed to the vehicle seat. As a vehicle seat, it is not necessary to replace the vehicle seat each time, and only a head guard can be attached to and detached from the vehicle seat so that it can be mounted and fixed freely. Even in an automobile circuit field, there is an advantage that it is possible to drive safely at high speed without being limited by speed.

  The vehicle seat head guard according to the present invention is provided so that the head guard is fitted to the seat bag of the vehicle seat from the outside direction so that it can be attached and fixed freely and detachable. A suitable vehicle seat and a special vehicle seat equipped with a head guard are prepared separately in advance, and there is no need to replace each time according to the place where the vehicle is driven. Since it is simply attached and detached freely, there is an advantage that driving and running can be performed as a safe and legal vehicle seat according to the place where driving and running are performed.

  The head guard for a vehicle seat according to the present invention is provided with a mounting concave portion provided with a fixing bolt projecting in the center direction on the seat bag, and at a position corresponding to the mounting concave portion on both side surfaces of the head guard in the central direction. A fitting convex part and a fitting concave part, each having a bolt insertion hole, are provided, and the fitting convex part of the head guard is fitted and closely attached to the mounting concave part of the seat bag, so that the fixing bolt is attached to the bolt insertion hole. Because the head guard is firmly fixed by firmly attaching to the seat bag because it is inserted and tightened and fixed, the head guard can be used for the vehicle even if a strong impact such as a collision accident is applied. There is no fear of dropping off from the seat back of the seat, and there is an excellent advantage that the safety of the vehicle occupant can be reliably ensured.

  The present invention is applied to the left and right sides of the passenger's head in the direction of the upper end of the seat back of a vehicle seat that conforms to a legal standard such as a vehicle safety standard installed in a sports car type vehicle or a racing vehicle. A vehicle seat that complies with the laws and regulations of the vehicle safety standards, etc. is installed by detachably mounting the head guard so that it can be pinched loosely from the left and right sides of the passenger's head at the corresponding position. Even on public roads where the road traffic law can be applied where only cars can be driven legally, even in car sats where cars can be driven at high speeds without speed limitations, sports car type cars and racing cars can be used. There is no need to replace the vehicle seat each time you drive, and you can just and safely remove the head guard from the vehicle seat. It was realized that the rolling traveling.

The best mode for carrying out the present invention will be described below with reference to the drawings.
FIGS. 1-15 is a figure which shows one Example of the head guard of the vehicle seat of this invention.

  Driving sports car type cars and competitive cars safely and legally without having to change the vehicle seats each time, even on motor circuit grounds and public roads where the Road Traffic Law applies. The purpose of enabling the vehicle to travel is realized simply by detachably mounting the head guard on the seat back of the vehicle seat.

1 is a perspective view showing an embodiment of a head guard for a vehicle seat according to the present invention. FIG. 2 is a rear perspective view of the head guard for a vehicle seat in FIG. 1, and FIG. 4 and 5 are perspective views showing an embodiment of a head guard, FIG. 6 is an enlarged cross-sectional view of the main part of FIG. 4, and FIG. FIG. 8 is a rear perspective view of the vehicle seat with the head guard removed from the head guard of the vehicle seat, FIG. 8 is an enlarged cross-sectional view taken along line AA of FIG. 7, and FIG. FIG. 10 is an enlarged cross-sectional view taken along line B-B in FIG. 4, and FIG. 10 is an exploded perspective view for showing a screwed state of a bolt and a nut as a means for attaching and fixing the head guard to the seat back of the vehicle seat.

  A head guard for a vehicle seat according to the present invention includes a head guard 3 formed in a substantially U-shape, as shown in FIGS. 1 and 2, fitted from the outer side in the upper end direction of a seat back 2 of a vehicle seat 1. When a driver or a passenger of a passenger sits on the vehicle seat, the head guard 3 that is detachably provided so as to be attachable and detachable to the seat back 2 gently holds the head of the passenger from both the left and right sides. The head is fixed as described above, and both end directions of the head guard 3 are provided so as to be substantially in the same position as the front part of the rider's face.

  The head guard 3 is formed in a substantially U shape by a flat plate made of ABS (acrylonitrile / butadiene / styrene copolymer resin) resin or other tough hard plastic, and in order to strengthen its impact resistance and strength. Further, a reinforcing rib body 4 having a rod-like body having a substantially circular cross section is provided around the entire peripheral edge of the head guard 3, and the entire cross-sectional structure is formed in a U-shaped cross section. A cushioning material 6 made of a flexible and elastic plastic resin such as urethane foam or rubber or cotton is attached to the entire inner side surface 5 in the fitting direction to the back 2, and the outer side surface thereof is attached. To the exterior skin made of woven or non-woven fabric or leather having considerable toughness, such as a leather sheet of a waterproof cloth obtained by integrally laminating a fiber cloth and a soft plastic sheet, or a raised sheet having raised surfaces on the entire surface of the cloth. Material 7 Is obtained by setting, the head guard 3 is detachably mounted fitted and fixed to the upper end direction of the seat back 2 of the vehicle seat 1.

  For the fixing means for making the head guard 3 detachable and attachable to the seat back 2 of the vehicle seat 1, the head guard 3 is fixed by being embedded in the wall thickness of the seat back 2 and protruding. The bolt 8 is inserted into a bolt insertion hole 9 drilled at a position opposed to the fixing bolt 8 projecting from the seat back 2 of the head guard 3, and the nut 10 is fastened and fixed.

Further, the head guard 3 can be detachably attached to and fixed to the seat back 2 of the vehicle seat 1, and the head guard 3 has a strong impact or vibration due to an accident or contact accident caused by the head guard 3 on the seat back 2. A part of the upper surface of the outer surface 11 of the seat back 2 of the vehicular seat 1 is recessed in a substantially spherical shape so that the vehicle seat 1 can be securely attached and fixed integrally even if it is added. The three mounting recesses 12 are recessed in the direction of both ends and substantially above the center, and the inner side surface 5 in the mounting direction of the head guard 3 at a position corresponding to the three mounting recesses 12 is provided for the mounting. Three fitting projections 13 are provided so as to be fitted into the recess 12 so that they can be brought into close contact with each other, and three fitting projections 13 of the head guard 3 are provided with three fitting projections 13 of the seat back 2. And fitted into the mounting recess 12 of the A fixing bolt 8 projecting in the direction of the center of the mounting recess 12 of the back 2 is inserted into a bolt insertion hole 9 drilled in the direction of the center of the fitting projection 13 of the head guard 3, and the fixing bolt is inserted. A nut 10 is fastened and fixed to 8.
In this case, three fitting recesses 15 that are recessed in the same shape as the fitting projections 13 are provided on the outer surface 14 in the opposite direction of the inner side surface 5 from which the fitting projections 13 of the head guard 3 are projected. The nut 10 formed on the cap nut is fastened and fixed to the fixing bolt 8 that is formed and protrudes from the bolt insertion hole 9 of the fitting recess 15, and the outer surface of the nut 10 formed on the cap nut is a head guard. 3 is fastened and fixed so as not to protrude outward from the fitting recess 15.

  As described above, the head guard 3 is detachably attached to the seat back 2 of the vehicle seat 1 and attached and fixed. The fitting convex portion 13 of the head guard 3 is fitted to the mounting concave portion 12 of the seat back 2. The head guard 3 is tightly attached to the seat back 2 of the vehicle seat 1 by being firmly attached and fixed by the fixing bolt 8 and the nut 10, and is fixedly attached integrally. Even if a strong impact, vibration, or the like is applied due to an accident, the head guard 3 is securely attached and fixed integrally, and the head guard 3 is not likely to fall off the seat back 2 of the vehicle seat 1. In addition, the operation of attaching and fixing the head guard 3 to the seat back 2 of the vehicle seat 1 is simply performed by fitting the head guard 3 to the attachment recess 12 of the seat back 2. The parts 13, combined with adhesion fitted, there is an effect that it easily by fixing tightened by the fixing bolt 8 and a nut 10.

As shown in FIG. 11, the substantially U-shaped head guard 3 that is detachably provided from the outside in the upper end direction of the seat back 2 of the vehicle seat 1 is divided into a plurality of both end directions. A through groove 17 having a through hole having an appropriate length and width can be drilled from the front end of the head guard 3 so that the rider can ensure a certain degree of visual field in the left-right direction.
In this way, the both end directions that obstruct the field of view of the head guard 3 are divided into a plurality of directions so that the rider can ensure a certain degree of field of view in the left-right direction via the head guard 3. If the through-groove 17 having a through-hole having an appropriate length and width is formed, even if the head guard 3 is provided, there is an effect that the rider can secure a visual field in the left-right direction to some extent.

As shown in FIG. 12, the head guard 3 that is detachably provided on the seat back 2 of the vehicle seat 1 can be secured in a lateral direction so that the rider can secure a certain degree of visual field in the left-right direction. It is possible to pierce one or a plurality of peeping through holes 18 having an appropriate size at an appropriate position.
In this way, one or a plurality of peep-through holes 18 are drilled in both end directions that obstruct the field of view of the head guard 3 so that the rider can move left and right through the peep-through holes 18 of the head guard 3. Even if the head guard 3 is provided, the rider can secure the right and left field of view to some extent, and the strength of the head guard 3 may be significantly reduced. There is an effect that there is no.

As shown in FIG. 13, the head guard 3 is formed into a rod-like body by a metal hollow tube having toughness instead of a tough hard plastic flat plate formed in a substantially U shape, and the whole is substantially U-shaped. The rod-shaped body head guard 19 made of a metal hollow tube body that is formed in the shape and is provided with a shock-absorbing material wound around the entire circumferential surface thereof.
Thus, if the head guard 3 is a rod-shaped head guard 19 made of a metal hollow tube body, there is an effect that it is possible to provide a simple head guard 3 having toughness and relatively inexpensive and structured. .

  As a fixing means for making the head guard 3 detachable and attachable to the seat back 2 of the vehicle seat 1, a fixing bolt 8 embedded in and protruding from the seat back 2 is used to fix the head guard 3. Any mounting fixing means can be applied instead of the mounting fixing means for passing the bolt 8 through the head gart 3 and tightening and fixing the fixing bolt 8 and the nut 10. For example, as shown in FIGS. The fitting latching body 20 and the fitting latching body 21 formed in the hand shape of the key are fitted so as to mesh with each other from opposite directions, and are fastened and fixed by a fixing bolt 22 and a nut 23 or a butterfly screw. It is also possible to do.

  The head guard for vehicle seats according to the present invention is applied to a normal vehicle seat that is permitted to drive safely on public roads to which the Road Traffic Law is applied to meet vehicle safety standards. Because it can be mounted and fixed freely, it can be attached and detached, so it is not only a racing car or a sports car type car that runs on an automobile circuit field without speed restrictions, but it can also be used as a vehicle other than public roads. It can also be used when driving at circuit sites, test tracks and other places.

  Furthermore, since the head guard of the vehicle seat of the present invention fixes the rider's head so that the rider's head is sandwiched loosely from the left and right sides, ordinary vehicles such as automobiles can be used on public roads. It can be used as a vehicle seat for passengers other than the driver, especially when traveling with an infant or a disabled person. Since the body including the head can be fixed so as not to jump out of the seat of the vehicle seat, it can also be used for driving the automobile more safely.

It is a perspective view of the head guard of the vehicular seat in Example 1 to which the present invention is applied. It is a perspective view of the back direction of the head guard of the vehicle seat of FIG. FIG. 3 is an enlarged perspective view of a main part of a head guard of the vehicle seat in FIG. 2. It is a perspective view of the front direction of a head guard. It is a perspective view of the back direction of a head guard. It is a perspective view of the principal part expansion which shows the state of attachment fixation of FIG. It is a perspective view of the back direction of a vehicular seat in the state where a head guard was removed. It is sectional drawing of the AA line of FIG. It is sectional drawing of the BB line of FIG. FIG. 7 is a perspective view of assembly / disassembly in a state where the bolts and nuts in FIG. It is a principal part enlarged view which shows the other Example of the head guard of the vehicle seat of this invention. It is a principal part enlarged view which shows the other Example of the head guard of the vehicle seat of this invention. It is a perspective view which shows the other Example of the head guard of the vehicle seat of this invention. It is a principal part expanded sectional view which shows the other Example of the means to attach and fix a head guard to a seat bag. It is a perspective view which shows the state of the assembly / disassembly by the volt | bolt and nut in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat bag 3 Head guard 4 Reinforcement rib body 5 Inner side surface 6 of head guard Cushioning material 7 Exterior skin material 8 Fixing bolt 9 Bolt insertion hole 10 Nut 11 Seat bag outer side surface 12 Mounting recess 13 Fit Joint convex portion 14 Head guard outer surface 15 Fitting concave portion 16 Vehicle seat inner surface 17 Through groove 18 Peeping through hole 19 Rod-shaped body head guard 20 Fitting locking member 21 Fitting locking member 22 Fixing bolt 23 Nut

Claims (11)

  A head guard for a vehicle seat, wherein a head guard is detachably mounted at positions corresponding to both sides of the head of the occupant in the upper end direction of the seat back of the vehicle seat.   A head guard is detachably provided at positions corresponding to both sides of the head of the occupant in the upper end direction of the seat back of the vehicle seat, and both ends of the head guard are seat backs of the vehicle seat. A vehicular seat head guard characterized in that it is placed almost at the same level as the rider's face or slightly protrudes to a position ahead of the face.   A head guard is detachably provided at positions corresponding to both sides of the head of the occupant in the upper end direction of the seat back of the vehicle seat, and both ends of the head guard are attached to the seat back of the vehicle seat. The vehicle seat is characterized in that it is placed almost at the same level as the rider's face or slightly protrudes to a position slightly ahead of the face, and the head guard can be loosely sandwiched from both sides by the head guard. Head guard.   4. The head guard for a vehicle seat according to claim 1, wherein the head guard is fitted in a state of sandwiching a seat back of the vehicle seat from the outside direction.   The vehicle according to claim 1, 2, 3, or 4, wherein the head guard is formed in a substantially U-shape as a whole, and is provided with a reinforcing rib body projecting around the entire peripheral side edge so as to have a substantially U-shaped cross section. Sheet head guard.   A fixing bolt projects from the outer surface of the seat back of the vehicle seat in the upper end direction, a bolt insertion hole is drilled on the side surface of the head guard attached to the seat back, and the seat back fixing bolt is inserted into the bolt insertion hole. The head guard for a vehicle seat according to claim 1, wherein the head guard is attached by being inserted into the fixing bolt, and a nut is fixed to the fixing bolt so that the head can be attached and fixed freely.   A mounting recess with a fixing bolt projecting in the center direction is formed on the outer side of the upper end of the seat back of the vehicle seat, and a reinforcing rib is provided on the entire peripheral edge to provide a cushioning material on the entire inner surface. Bolt insertion holes are drilled in the center direction on the side face of the head guard attached to the seat back, which has a substantially U-shaped cross section and is formed in a substantially U shape. A fitting projection on the inner surface and a fitting recess on the outer surface, and the fitting projection on the head guard is fitted into the mounting recess on the seat back so that the fixing bolt can be used as a bolt insertion hole. Insert the head guard at positions corresponding to both sides of the head of the occupant of the seat back, and tighten the nut to the fixing bolt so that it can be fixed and detachable. Passenger's face from the seat back of the vehicle seat Substantially overhead guard of the vehicle seat, characterized by comprising brought protrudes to a position protruding forward from the position to or slightly face.   The nut that is tightened and fixed to the fixing bolt is a cap nut so that the cap nut that is tightened and fixed does not protrude outward from the fitting recess recessed in the head guard. The head guard for a vehicle seat according to claim 7, which is provided.   A fixing bolt projecting from the outer surface of the seat back of the vehicle seat in the upper end direction is formed by embedding and fixing the embedded fixing flat plate integrally provided on the head of the bolt within the thickness of the seat back. The head guard for a vehicle seat according to claim 8.   The head guard for a vehicle seat according to claim 1, 2, 3 or 4, wherein the head guard comprises a rod-like body having an overall U-shape.   The head guard is formed in a substantially U shape by plastic, metal or other tough material, and is provided with a reinforcing rib body projecting around the entire peripheral edge so as to have a substantially U-shaped cross section. In this case, cushioning material is attached to the entire inner surface, and one or more through-grooves are cut out at an arbitrary length from both ends, or one or more peeping through holes are drilled in both end directions. A head guard for a vehicle seat according to claim 1, 2, 3 or 4.

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