JP3022898U - Knee rest structure on the back of the seat back - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To make it possible to inexpensively manufacture a knee pad on the back of a seat back of a vehicle such as an automobile. SOLUTION: A knee pad 10 on the back side of a seat back is a general plastic "U" -shaped outer frame member 12, and a flat plate knee pad member made of laminated wood such as a hard board attached to the outer frame member 12. 14 and a pocket member 16 made of a net, and a rivet 18 integrally connecting these. The outer frame member 12 has a mounting portion 12 projecting to the inner peripheral side.
a is formed, and a large number of coupling holes 12b are formed in the mounting portion 12a. The knee pad member 14 has a connecting hole 1 at a position corresponding to the connecting hole 12b of the outer frame member 12.
4a is formed. A knee pad member 14 and a pocket member 16 are integrally caulked and attached to the outer frame member 12 with a rivet 18 in a state in which the outer peripheral sides of the knee pad member 14 and the pocket member 16 are overlapped by a predetermined overlap margin. There is.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a knee support structure formed on a back surface of a seat back of a seat of a vehicle such as an automobile. The knee pads on the back of the seat back can damage the knees of the occupant sitting in the back seat when the vehicle is in a collision such as a collision or a rear-end collision, or when sudden braking is applied while driving. It is provided for protection from the situation. The knee rest is generally composed of a central knee rest against which the knees of the rear seat occupant abut, and an outer frame portion that is fixedly supported on the back of the seat back so as not to shift in the vertical and horizontal directions. is there. The knee rest must have sufficient strength and shock absorption to protect the knee from damage. In addition, the outer frame part is used to fix and support the knee rest part, and also as a mounting base for mounting pockets for storing equipment such as maps on the back of the seat back, so it has a complicated three-dimensional shape. Therefore, it is necessary to have good moldability so that In addition to these conditions, the knee pads on the back of the seat back do not deteriorate in material properties even under the severe temperature conditions of 80 ° C to -45 ° C expected in the winter in tropical regions and boreal regions. Materials with excellent heat and cold resistance are required.

[0002]

[Prior art]

 As a conventional knee pad structure on the back of a seat back, there is a knee board part and an outer frame part that are integrally formed by using a hard board in which wood chips are hardened with an adhesive. However, a single hardboard has the advantages of being superior in heat resistance, cold resistance, and durability, having sufficient strength and shock absorption to protect the knee from damage, and being inexpensive to manufacture. However, there is a problem that it is difficult to mold a seat back having a complicated three-dimensional shape into a corresponding shape. Therefore, in order to meet such demands, there is one that uses a resin molded product by injection molding or the like. Although this resin molded product has the advantage that it can be easily molded into a complex vertical shape and is suitable for mass production, it has a certain strength and heat and cold resistance as a knee pad. In order to be equipped with this, engineering plastics that are higher in quality than general-purpose resins are required, and the price is higher than that of hardboard products. Another knee pad may be made of a single metal, but it is difficult to obtain an inexpensive material having both a predetermined shock absorption property and shape restoration property. Therefore, conventionally, as shown in FIG. 8, a plate member made of a metal material is press-molded into a predetermined three-dimensional shape to form an outer frame member 52, and a hard board is molded into a relatively simple shape to provide a knee support member. In general, 50 is integrated with a rivet 54 to form a knee pad. By doing so, the knee pad has sufficient strength and shock absorption to protect the knee from damage, and it is also possible to deal with the complicated three-dimensional shape of the back of the seat back, and at the same time, it has a predetermined heat resistance.・ A relatively low cost with cold resistance is used.

[0003]

[Problems to be solved by the device]

 However, the conventional knee pad on the back of the seat back as described above is strongly demanded to further reduce the cost. The present invention aims to solve the above problems.

[0004]

[Means for Solving the Problems]

 The present invention solves the above-mentioned problems by constructing a knee pad by a general resin outer frame member and an integrated wooden knee pad member such as a hard board. That is, the knee rest structure of the back of the seat back of the present invention is provided on the back of the seat back of a vehicle such as an automobile, and is intended to protect the knees of a rear seat occupant. A general-purpose resin outer frame member (12) having (12a) formed thereon and a flat plate knee pad member (made of laminated wood such as a hardboard having a large number of coupling holes (14a) formed at the outer peripheral portion ( 14), and the outer peripheral portion of the knee rest member (14) is superposed on the attachment portion (12a) of the outer frame member (12) and is integrally coupled. As a means of integration, the outer frame member (12) is provided with a coupling hole (12a), and a rivet (18) penetrating this and the coupling hole (14a) of the knee support member (14) is used. Alternatively, the knee pad member (14) may be inserted into the mold and the outer frame member (12) may be injection-molded to form the joint hole (14a) of the knee pad member (14). You may make it integrated via. The reference numerals in parentheses indicate the corresponding members in the embodiment.

[0005]

[Action]

 With the knee rest member (14) in place, the outer frame member (12) is integrated with the knee rest member (14) to form a knee rest on the back of the seat back. Since the flat plate knee pad member (14) made of laminated wood such as hardboard and the outer frame member (12) made of general-purpose resin are integrated into a knee pad, it is sufficient to protect the knee from damage. It has strength and shock absorption, and is capable of handling complicated three-dimensional shapes on the back of the seat back, and it is possible to manufacture knee pads with the prescribed heat resistance, cold resistance, and durability characteristics at low cost. In the case of insert molding, it is not necessary to separately prepare a joining member such as a rivet (18) and a post process for joining is not required, so that the cost can be further reduced.

[0006]

[Embodiment of device]

 (First Embodiment) FIGS. 1 to 4 show an embodiment of the present invention. The knee pad 10 on the back of the seat back includes a general resin “U” -shaped outer frame member 12, a hard-board flat plate knee pad member 14 attached to the outer frame member 12, and a net pocket. It is composed of a member 16 and a rivet 18 (see FIG. 4) that connects these members together. As shown in FIG. 2, the outer frame member 12 is formed with a mounting portion 12a protruding toward the inner peripheral side. As shown in FIG. 3 showing the outer frame member 12 alone, the mounting portion 12a of the outer frame member 12 is formed. A large number of coupling holes 12b are formed in the. As shown in FIG. 4, the knee rest member 14 has a coupling hole 14a formed at a position corresponding to the coupling hole 12b of the outer frame member 12. The knee pad member 14 and the pocket member 16 are caulked integrally with the rivet 18 to the mounting portion 12a of the outer frame member 12 with the outer peripheral sides thereof being overlapped by a predetermined overlap margin. The pocket member 16 is not shown in FIG.

Next, the operation of this embodiment will be described together with the assembly order. In advance, the outer frame member 12 and the knee rest member 14 are molded into predetermined shapes. That is, the outer frame member 12 having the mounting portion 12a projecting to the inner peripheral side and a number of mounting holes 12b penetrating the mounting portion 12a is injection-molded using a general-purpose resin material, and the mounting hole 12b is mounted on the outer peripheral portion. The knee rest member 14 having the same number of mounting holes 14a as the above is press-molded using a hardboard material. Next, the outer peripheral portion of the knee rest member 14 is superposed on the mounting portion 12a of the outer frame member 12, and the mounting holes 12b and 14a are aligned. Next, while maintaining this state, the pocket member 16 is overlaid on the knee rest member 14, and the members 12, 14, 16 are integrally caulked and joined by the rivet 18. As a result, the knee rest 10 is completed. The knee rest 10 is attached to the back of the seat back of a vehicle such as an automobile (not shown). When a vehicle has a collision accident such as a collision or a rear-end collision, or when the vehicle is suddenly braked while driving, the passenger in the rear seat tends to be pushed forward due to the impact, but the seat in the front seat is pushed. The impact applied to the knee is absorbed by the seat back of the front seat through the knee board member 14 made of the hardboard of the knee rest 10 attached to the back of the back, so that it is protected from damage.

(Other Embodiments) The outer frame member 12 and the knee rest member 14 are not limited to being joined by rivets, but as shown in FIG. By forming the convex portions 12c, fitting these into the coupling holes 14a of the knee rest member 14, and caulking and coupling the rivet nut 20 to the joint convex portion 12c, the outer frame member 12 and the knee rest member 14 are connected. May be integrated. Further, as shown in FIG. 6, the knee pad member 14 having the joint hole 14a formed therein is inserted into the mold to perform molding, whereby molten resin is poured into the joint hole 14a of the knee pad member 14. The outer frame member 12 and the knee rest member 14 may be integrated with each other by forming a plurality of coupling convex portions 12c of the outer frame member 12. Further, as another form of insert molding, as shown in FIG. 7, a knee pad member 14 having a coupling hole 14a is inserted into a mold to carry out molding, whereby a bridge 12d and an outer frame member 12 and a knee are formed. The contact member 14 may be integrated. In the case of insert molding as shown in FIG. 6 and FIG. 7, since the assembling work for integrating the outer frame member 12 and the knee rest member 14 later is not necessary, the manufacturing cost can be further reduced. Further, since it is not necessary to separately prepare the rivet 18, the cost required for inventory management can be reduced. In the above description of the first embodiment, the knee rest member 14 uses the hardboard as the laminated wood, but a plywood board may be used instead.

[0009]

[Effect of device]

 As described above, according to the present invention, the knee pad on the back of the seat back of a vehicle such as an automobile is configured by the outer frame member made of general-purpose resin and the knee pad member made of laminated wood such as hardboard. Therefore, in the event of a contact accident such as a collision or a rear-end collision, or when the vehicle is suddenly braked while driving, it has sufficient strength and shock absorption to protect the knee injury of the rear seat occupant. Moreover, it is possible to form a three-dimensional shape that corresponds to the complicated three-dimensional shape of the back of the seat back, and it is possible to obtain a low-cost knee pad that has the prescribed heat resistance, cold resistance, and durability characteristics. When the outer frame member is integrally injection-molded with the knee rest member by insert molding as set forth in claim 3, a connection such as a rivet for joining the outer frame member and the knee rest member. Since it is not necessary to separately prepare a member and a post process for joining is not necessary, the cost can be further reduced.

[Brief description of drawings]

1A and 1B are views showing a knee rest structure of a seat back of the present invention, wherein FIG. 1A is a perspective view of the knee rest, and FIG.

FIG. 2 is a plan view of a knee rest.

FIG. 3 is a partial perspective view of an outer frame member.

FIG. 4 is a diagram illustrating a state in which the outer frame member and the knee rest member are coupled to each other.

FIG. 5 is a diagram showing another embodiment.

FIG. 6 is a diagram showing still another embodiment.

FIG. 7 is a view in which an outer frame member and a knee pad member are joined by insert molding.

FIG. 8 is a view showing a conventional knee rest structure on the back of a seat back.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Knee rest 12 Outer frame member 12a Mounting portion 12b Mounting hole 12c Coupling convex portion 14 Knee rest member 14a Mounting hole 16 Pocket member 18 Rivet 20 Rivet nut

Claims (3)

[Scope of utility model registration request] 1. A knee pad structure provided on a back surface of a seat back of a vehicle such as an automobile to protect the knees of a rear seat occupant, and a general-purpose resin having a mounting portion (12a) formed on an inner peripheral side of a frame portion. Outer frame member (12) and a flat plate-shaped knee pad member (14) made of laminated wood such as a hard board having a large number of coupling holes (14a) formed on the outer periphery thereof.
And, the outer peripheral portion of the knee rest member (14) is integrally joined to the attachment portion (12a) of the outer frame member (12) in a state of being overlapped with each other. Knee rest structure. 2. The outer frame member (12) is provided with coupling holes (12b) at positions corresponding to the coupling holes (14a) of the knee rest member (14), respectively. 12) and the knee rest member (14) are provided with rivets (1) penetrating these connecting holes (12b, 14a).
The knee pad structure on the back surface of the seat back according to claim 1, wherein the knee pad structure is caulked with each other. 3. The outer frame member (12) is injection-molded with the knee rest member (14) inserted in a mold, so that the knee rest member (14) is inserted through the coupling hole (14a). The knee pad structure on the back of the seat back according to claim 1, wherein the knee pad structure is integrated with the knee back structure.