JP5652149B2 - Joint structure of vehicle seat frame - Google Patents

Description

  The present invention relates to a joining structure for a vehicle seat frame, and more specifically, formed so as to bridge a first frame body formed in a substantially U shape and both free ends of the substantially U shape of the first frame body. The present invention relates to a vehicle seat frame joining structure formed by joining a second frame body.

  Conventionally, a joining structure of a vehicle seat frame formed by joining a plurality of metal frame bodies is already known. Here, Patent Document 1 below discloses a back frame joining structure formed by joining a plurality of aluminum frame bodies. Thereby, compared with the back frame formed by joining a plurality of iron frame bodies, the weight thereof is reduced, so that the weight of the vehicle seat can be reduced.

Japanese Patent No. 3415807

  However, in the above-described prior art, since joining by welding is difficult, joining by bolting via another component has been performed. Therefore, the problem that the number of parts increases has occurred.

  An object of the present invention is to provide a vehicle seat frame joining structure in which a plurality of frame bodies are joined without increasing the number of parts.

The present invention is for achieving the above object, and is configured as follows. The invention according to claim 1 is formed so as to extend substantially in the vertical direction so as to bridge the first frame body formed in a substantially U shape and both free ends of the substantially U shape of the first frame body. A vehicle seat frame joining structure formed by joining the second frame body, and sliders are formed at both substantially U-shaped free ends of the first frame body. In the frame body, guide grooves into which both sliders of the first frame body can be inserted are formed so as to extend substantially in the vertical direction, and both the first frame body and the second frame are inserted into the guide grooves. It is a structure characterized by joining the frame body.
According to this structure, when joining the first frame body and the second frame body, welding is not required, and no separate parts for joining are required. Therefore, a plurality of frame bodies can be joined without increasing the number of parts.

According to a second aspect of the present invention, there is provided the vehicle seat frame joining structure according to the first aspect, wherein the slider is formed at both free ends of the substantially U-shape in the first frame body. It is the structure characterized by this.
According to this structure, the first frame body and the second frame body can be joined at two points. Therefore, the strength of this bonding can be improved.

The invention according to claim 3 is the joining structure of the vehicle seat seat frame according to any one of claims 1 and 2, and when the slider is inserted into the guide groove, the inserted slider is The slider or the guide groove is formed with a tapered surface so as to be fitted to the guide groove.
According to this structure, the first frame body and the second frame body can be joined at two points without requiring joining means such as bolts. Therefore, the increase in the number of parts can be further suppressed.

FIG. 1 is an exploded perspective view of a back frame according to Embodiment 1 of the present invention. FIG. 2 is a perspective view showing the assembled state of FIG. 3 is a cross-sectional view taken along line III-III in FIG. FIG. 4 is an exploded perspective view of the back frame according to the second embodiment of the present invention. FIG. 5 is a perspective view showing the assembled state of FIG. 6 is a cross-sectional view taken along line VI-VI in FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Example 1
First, Example 1 of the present invention will be described with reference to FIGS. In the following description, “driver's seat back frame (hereinafter simply referred to as“ back frame 1 ”)” will be described as an example of “vehicle seat frame”.

  The back frame 1 is of a type to which a seat belt winding device (both not shown) can be attached. That is, this driver's seat is a seat belt built-in type seat. Further, in the following description, “up”, “down”, “front”, “rear”, “left”, “right” refers to the directions of “up”, “down”, “front”, “rear”, “left”, “right” described in the above-described drawings. When up, down, front, back, left, right are shown. The same applies to Example 2 described later.

  First, with reference to FIG. 1, the structure of the back frame 1 is demonstrated to Example 1 of this invention. The back frame 1 includes an upper frame 10, a lower frame 20, and left and right side frames 30 and 40 that bridge both ends of the upper frame 10 and the lower frame 20.

  Sliders 12 and 22 are formed at the right end of the upper frame 10 and the right end of the lower frame 20, respectively, which can be inserted (guided) into guide grooves 42 formed in a right side frame 40 described later. On the surfaces of the sliders 12 and 22, screw holes 12 a and 22 a for screwing bolts B and B for joining the sliders 12 and 22 to the right side frame 40 when the back frame 1 is assembled are formed. Has been.

  The upper frame 10, the lower frame 20, and the left side frame 30 are integrally formed of a magneto die cast material together with the sliders 12 and 22. The upper frame 10, the lower frame 20, and the left side frame 30 correspond to a “first frame body” recited in the claims.

  On the other hand, as described above, the right side frame 40 has a guide groove 42 into which the sliders 12 and 22 of the upper frame 10 and the lower frame 20 can be inserted (guided). In the right side frame 40, as described above, when the back frame 1 is assembled, through holes 44, 44 into which bolts B, B for joining the sliders 12, 22 to the right side frame 40 can be inserted. Is formed.

  The right side frame 40 is integrally formed by extrusion molding of aluminum. Thus, since it forms by extrusion molding, the guide groove 42 can also be formed easily. The right side frame 40 corresponds to a “second frame body” recited in the claims.

  Next, a procedure for assembling the back frame 1 from the above-described upper frame 10, the lower frame 20, and the left and right side frames 30, 40 will be described with reference to FIGS. First, an operation of inserting the slider 22 of the lower frame 20 and the slider 12 of the upper frame 10 into the guide groove 42 of the right side frame 40 is performed (see FIG. 2). At this time, an operation of inserting from the slider 22 of the lower frame 20 is performed (see FIG. 1).

  Next, when this insertion operation is performed up to a predetermined insertion position (a position where the back frame 1 is completed), the screw holes 12a and 22a of the sliders 12 and 22 are inserted into the through holes 44 of the right side frame 40. , 44, the bolts B, B are inserted into the screw holes 12a, 22a from the through holes 44, 44. Subsequently, an operation of screwing the inserted bolts B and B into the screw holes 12a and 22a is performed (see FIG. 3). Thereby, both sliders 12 and 22 can be joined to the right side frame 40, and the assembly work of the back frame 1 is completed (refer FIG. 2).

  The joining structure of the back frame 1 according to the first embodiment of the present invention is configured as described above. According to this configuration, the slider 22 of the lower frame 20 and the slider 12 of the upper frame 10 are inserted into the guide groove 42 of the right side frame 40, and the screw holes 12a, 22a of the both sliders 12, 22 are inserted to the right. Assembly of the back frame 1 when the bolts B and B are inserted into the screw holes 12a and 22a from the through holes 44 and 44. Can be completed. If the assembly can be completed in this way, welding is not required and no separate parts for joining are required. Therefore, the number of parts is not increased. Further, when the slider 22 of the lower frame 20 and the slider 12 of the upper frame 10 are inserted into the guide groove 42 of the right side frame 40, this insertion forms a guide state. Therefore, the load received by the upper frame 10 and the lower frame 20 is The side frame 40 can be securely transmitted.

  Further, according to this configuration, the sliders 12 and 22 are formed at the right end of the upper frame 10 and the right end of the lower frame 20. Therefore, the left and right side frames 30 and 40 are joined at two points. Therefore, the strength of this joining can be improved.

  Note that the strength of the metal increases in the order of magnesium, aluminum, and iron when a general material is used. In proportion to this, the specific gravity increases. In the first embodiment, the right side frame 40 (first frame body) to which the seat belt load is directly applied is formed of high-strength aluminum, and the upper frame 10, the lower frame 20, and the relatively low strength, The left side frame 30 (second frame body) was molded from magnesium. In addition, by using the first frame body as a die-cast material, the upper frame 10, the lower frame 20, and the left side frame 30 can be integrally formed without joining. In general, the die-cast material has a property that is difficult to be joined by welding. However, as in the first embodiment, the second frame body can be inserted and fixed to the first frame body. Can be joined without the need for welding.

(Example 2)
Next, Example 2 of the present invention will be described with reference to FIGS. In the second embodiment, the sliders 12 and 22 can be joined to the right side frame 40 without the need for the bolts B and B, as compared with the first embodiment described above. In the following description, members having the same or equivalent configuration as those of the first embodiment are denoted by the same reference numerals in the drawings, and redundant description is omitted.

  The surface of the slider 12 of the upper frame 10 (the surface facing the inner surface of the right side frame 40) and the surface of the slider 22 of the lower frame 20 (the surface facing the inner surface of the right side frame 40) are both Tapered surfaces 12b and 22b are formed so as to incline downward along the direction in which the sliders 12 and 22 are inserted.

  On the other hand, when the sliders 12 and 22 of the upper frame 10 and the lower frame 20 can be respectively inserted into the guide groove 42 of the right side frame 40, the inserted sliders 12 and 22 fit into the guide groove 42. It is formed to form a state. Further, when assembling the back frame 101 in the right side frame 40, when inserting the slider 12 of the upper frame 10 into the guide groove 42 and when inserting the slider 22 of the lower frame 20 into the guide groove 42 A notch 46 is formed so as to match the insertion length.

  Next, a procedure for assembling the back frame 101 from the above-described upper frame 10, the lower frame 20, and the left and right side frames 30 and 40 will be described with reference to FIGS. First, the operation of inserting the slider 22 of the lower frame 20 into the guide groove 42 through the notch 46 of the right side frame 40 is performed, and the slider 12 of the upper frame 10 is inserted into the guide groove 42 of the right side frame 40. Work is performed (see FIGS. 4 to 5).

  Next, when this insertion operation is performed up to a predetermined insertion position (a position where the back frame 101 is completed), both sliders 12 and 22 are press-fitted into the guide groove 42 (see FIG. 6). Thereby, both sliders 12 and 22 can be joined to the right side frame 40, and the assembly operation of the back frame 101 is completed (see FIG. 5).

  The joining structure of the back frame 101 according to the second embodiment of the present invention is configured as described above. According to this configuration, it is possible to obtain the same operation and effect as the joining structure of the back frame 1 described in the first embodiment. Moreover, since both the sliders 12 and 22 can be joined to the right side frame 40 without requiring the bolts B and B, an increase in the number of parts can be further suppressed.

The contents described above are only related to one embodiment of the present invention, and do not mean that the present invention is limited to the above contents.
In each embodiment, the example in which the upper frame 10, the lower frame 20, and the left side frame 30 (first frame body) are integrally formed of a magnet die cast material has been described. However, the present invention is not limited to this magnet die cast material, and any metal may be used as long as it is a metal excluding iron. The same applies to the right side frame 40 (second frame body).

  Further, in each embodiment, “driver's seat back frame” is described as an example of “vehicle seat frame”. However, the present invention is not limited to this, and it may be “passenger seat back frame” or “rear seat back frame”.

  In the second embodiment, the surfaces of the slider 12 of the upper frame 10 and the surface of the slider 22 of the lower frame 20 are tapered surfaces 12b and 22b inclined downward along the insertion direction of the sliders 12 and 22, respectively. An example of formation has been described. However, the present invention is not limited to this, and conversely, a tapered surface may be formed on the inner surface of the right side frame 40 so as to incline downward along the insertion direction of both the sliders 12 and 22. .

1 Back frame (vehicle seat frame)
DESCRIPTION OF SYMBOLS 10 Upper frame 12 Slider 12b Tapered surface 20 Lower frame 22 Slider 22b Tapered surface 30 Left side frame 40 Right side frame 42 Guide groove 44 Through-hole 101 Back frame (vehicle seat frame)

Claims (3)

A first frame body formed in a substantially U-shape, and a second frame body formed so as to extend in a substantially vertical direction so as to bridge both free ends of the substantially U-shape of the first frame body. A vehicle seat frame joining structure formed by joining,
Sliders are formed on both free ends of the substantially U-shape in the first frame body,
In the second frame body, guide grooves into which both sliders of the first frame body can be inserted are formed so as to be substantially along the vertical direction ,
A joining structure of a vehicle seat frame, wherein both sliders are inserted into guide grooves to join the first frame body and the second frame body. The vehicle seat frame joining structure according to claim 1,
The vehicle seat frame joining structure, wherein the slider is formed at both free ends of the substantially U-shape in the first frame body. It is the joining structure of the vehicle seat seat frame according to claim 1,
A vehicular seat characterized in that a taper surface is formed on the slider or the guide groove so that the inserted slider fits into the guide groove when the slider is inserted into the guide groove. Frame joint structure.

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