JP4171131B2 - Seat rattle prevention structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a so-called flip-up type seat back in which a seat back is configured to be rotatable up and down around a front edge portion of a seat in which a seat back is foldably coupled to the seat bottom. The present invention relates to an anti-sticking structure.
[0002]
[Prior art]
Conventionally, with the front edge of the seat bottom provided with a seat back attached to the rear edge, the forward and backward rotation is performed, the seat bottom is upright at the position of the front edge, and the seating attitude is substantially parallel to the floor. There is known a so-called flip-up type seat that is configured such that its posture can be changed between the two. This seat can be used as a seat by setting the seat bottom to the seating posture, while setting the seat bottom to the standing posture ensures a space for loading luggage on the floor. It is rich and useful.
[0003]
[Problems to be solved by the invention]
However, the flip-up type seat as described above is such that the fulcrum portion of the front edge portion of the seat bottom is only connected to the floor, so that the rear edge portion is supported in a state where the seat bottom is set to the seating posture. There is a problem that the seat is not stable and the seat may rattle due to the vibration of the traveling vehicle. Therefore, an elastic member such as rubber is interposed between the floor and the rear edge of the seat bottom, and it is conceivable to eliminate the rattling of the seat by absorbing vibration to this elastic member. In this way, although there is an effect in preventing rattling in the vertical direction, there is a new problem that rattling in the width direction is not resolved.
[0004]
The present invention has been made to solve the above-described problems, and an object thereof is to provide a sheet rattling prevention structure that can reliably suppress rattling in the width direction. Yes.
[0005]
[Means for Solving the Problems]
According to the first aspect of the present invention, the seat bottom is configured so that the posture can be changed between a substantially horizontal seating posture and a substantially vertical standing posture by rotating up and down with the front edge as a fulcrum. It is an anti-rattle structure that is applied, and the floor is provided with a pair of support frames extending in the front-rear direction that support the seat bottom, and each support frame has a front edge of the seat bottom at the front. A horizontal shaft extending in the width direction for pivotally supporting the portion is provided, and a striker extending in the width direction is provided in the rear portion, while the seat bottom is engaged with the striker and seated the width direction a pair of locking mechanism for locking the bottom of the sitting posture, is laminated on oppositely disposed widthwise pair of catch plates and the catch plate so as to contact to the support frame and the striker catch Bar and are mounted on the said support frame, the width direction a pair of gap in a state where the seat bottom is orientation set in a seated posture sandwiching the catch plate and the catch rubber is formed, in the gap and catch rubber Either one or both are provided with a guide slope that guides the contact between the two, and the gap is set to have a minimum gap dimension smaller than a thickness dimension of the catch plate plus a thickness dimension of the catch rubber. It is characterized by being.
[0006]
According to the present invention, by setting the seat bottom to the seating posture, the lock mechanism is engaged with the striker in a state where the support frame is in contact with the catch rubber while being inclined, thereby seating the seat bottom. Posture is stable. When the seat bottom is locked to the support frame by the lock mechanisms and each catch rubber is in contact with the support frame, the catch rubber is elastically deformed. Therefore, the seat bottom is stretched in the opposite direction by each catch rubber, thereby preventing the seat bottom from rattling in the width direction.
[0007]
According to a second aspect of the present invention, in the first aspect of the invention, each of the support frames is formed in a U shape in a sectional view, and has an arc shape in a sectional view formed by folding an upper edge portion. The catch rubbers are characterized in that they are shaped so as to come into contact with the folded edges and the strikers while being elastically deformed.
[0008]
According to the present invention, by setting the seat bottom to the seating posture, the catch rubber is attached to the support frame body and is pressed against the striker while being guided by the folded edge while being elastically deformed. In addition to preventing rattling, shaking in the vertical direction is also prevented.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 and FIG. 2 are perspective views showing an embodiment of a flip-up type seat to which the rattling prevention structure according to the present invention is applied, and FIG. (B) is a view from the back side. 2A shows a state in which the seat back is folded over the seat bottom, and FIG. 2B shows a state in which the seat bottom is flipped up and set in a standing posture. As shown in these drawings, the seat 1 includes a seat bottom 11 serving as a seat and a seat back 12 serving as a backrest standing on a rear edge portion of the seat bottom 11.
[0010]
Knuckle brackets 13 are provided on both side surfaces of the rear portion of the seat bottom 11. The seat back 12 is pivotally supported by a connecting shaft 14 extending in the width direction with the lower portion sandwiched between the pair of knuckle brackets 13, thereby standing up at the rear portion of the seat bottom 11. The posture can be changed between the standing posture shown in FIG. 1 and the folded posture shown in FIG. 2 folded on the seat bottom 11.
[0011]
Further, the knuckle bracket 13 is provided with a knuckle mechanism and a knuckle operating rod for adjusting the tilt angle of the seat back 12 and locking and unlocking the set posture of the seat back 12, as shown in FIGS. In FIG. 2, these illustrations are omitted.
[0012]
The seat bottom 11 is provided with a pair of width direction leg plates 2 attached to the front position on the back side and a pair of catch plates 3 ((B) in FIG. 2) attached to the rear position. The vehicle floor F is provided with a pair of support frames 4 in the width direction for supporting the leg plate 2 and the catch plate 3 of the seat bottom 11. The leg plate 2 is configured such that the front end of the leg plate 2 can be rotated forward and backward with the front edge of the support frame 4 as a fulcrum, so that the seat bottom 11 is positioned on the floor in front of the support frame 4. The posture can be changed between an upright posture standing upright on F ((B) in FIG. 2) and a sitting posture ((A) in FIG. 1 and FIG. 2) with the seating surface substantially horizontal. Yes.
[0013]
The catch plate 3 is locked by being locked to the rear portion of the support frame 4 with the seat bottom 11 set to the seating posture, so that the seating posture of the seat bottom 11 thus set is stabilized. ing. Further, an operating rod 30 extending in the width direction is bridged between the pair of knuckle brackets 13, and a handle 30 a that protrudes rearward is provided at the center of the operating rod 30. The above-described lock can be released by the operation.
[0014]
FIG. 3 is a perspective view for explaining the support frame body 4 and its mounting state on the floor F. FIG. As shown in this figure, the support frame 4 includes a frame body 41 formed by pressing a flat plate that is long in the front-rear direction into a U shape, and a side wall 41a of the frame body 41 outward. A pair of mounting brackets 42 projecting toward the front and rear, a front striker 43 bridged between the side walls 41a at the front end position of the frame body 41, and a rear side bridged between the side walls 41a at the rear end position It consists of a striker 44.
[0015]
On the other hand, in the floor F, a pair of widthwise mounting windows F1 for fitting the support frame body 4 is perforated, and the mounting bracket 42 and the frame body 41 are fitted in the mounting windows F1, respectively. Bolts are inserted into the insertion holes formed in the floor F and fastened with nuts so that the support frame 4 is mounted on the floor F.
[0016]
Each side wall 41a of the frame body 41 has a folded edge portion 41b formed by folding the upper edge portions in a direction facing each other. A gap (fitting gap (mounting groove) 45) between the folded-back edges 41b is set to a dimension in which the leg plate 2 and the catch plate 3 can be fitted. Then, the front end portion of the leg plate 2 is locked to the front striker 43 and the front end portion of the catch plate 3 is locked to the rear striker 44 so that the seat bottom 11 is attached to the support frame 4. It has become.
[0017]
FIG. 4 is a perspective view showing an embodiment of the leg plate 2. As shown in this figure, the leg plate 2 has a basic configuration including a tapered plate body 21 and a fork 22 pivotally supported around a support shaft 23 of the plate body 21. An outer fitting groove 21a extending in the front-rear direction that is fitted on the front striker 43 is recessed at the front end of the plate body 21, while the fork 22 is engaged with the outer fitting groove 21a. The stop groove 22a is recessed, and the front striker 43 is fitted in a portion where the grooves 21a and 22a intersect so that the leg plate 2 is mounted on the support frame 4 so as to be rotatable around the front striker 43. It has become.
[0018]
Further, the fork 22 is urged toward the direction in which the locking groove 22a intersects the outer fitting groove 21a by a spring provided at an appropriate position, and the fork 22 is rotated by rotating the fork 22 about its axis. Thus, the installation position is set so that the fork 22 can be freely engaged and disengaged with respect to the front striker 43.
[0019]
FIG. 5 is a perspective view showing an embodiment of the catch plate 3. As shown in this figure, the catch plate 3 is pivotally supported around a lower plate body 31 fixed to the lower end of the knuckle bracket 13 with bolts or the like and a support shaft 34 of the plate body 31 so as to be rotatable. The fork 32 and the link plate 33 linked to the fork 32 have a basic configuration.
[0020]
The catch plates 3 are provided in a pair in the width direction so as to face the support frame body 4 at the bottom of the bottom surface of the seat bottom 11. Each fork 32 is provided on a surface opposite to the facing surface of each plate body 31.
[0021]
The plate body 31 is formed with an outer fitting groove 31a that is formed by cutting upward from the lower edge of the plate to fit the rear striker 44, and the fork 32 has an outer fitting. A catching groove 32a is provided so as to intersect the groove 31a, and the catching plate 3 is fitted to the rear striker by further fitting the catching groove 32a to the rear striker while the outer fitting groove 31a is fitted to the rear striker 44. 44 is locked.
[0022]
On the other hand, the operation rod 30 is bridged between the knuckle brackets 13 so as to be rotatable around the axis center with both end portions penetrating the pair of knuckle brackets 13. And the upper end part of each said link plate 33 is being fixed to the both ends of this operation rod 30 so that rotation is possible. Such a link plate 33 is formed in a fan-like shape spreading downward, and an arc hole 33a centering on the axis of the operating rod 30 is formed in the lower part, while the arc hole 33a is formed in the upper part of the fork 32. A projecting piece 32b that is loosely fitted to the projecting portion is provided.
[0023]
In addition, a coil spring 35 is stretched between the front upper edge of the fork 32 and the front upper edge of the plate body 31, and a urging force directed clockwise around the support shaft 34 is always applied to the fork 32, As a result, the outer fitting groove 31a of the plate body 31 and the locking groove 32a of the fork 32 usually intersect each other.
[0024]
Then, by gripping the handle 30a and operating the handle 30a upward, the operation rod 30 rotates counterclockwise around its own axis, and this causes the link plate 33 to rotate around the operation rod 30 and thereby rotate the arc hole. The projecting piece 32b loosely fitted to the 33a is lifted obliquely upward while slidingly contacting the lower edge of the arc hole 33a, and the fork 32 rotates counterclockwise around the support shaft 34, whereby the outer fitting groove The intersection of the locking groove 32a with respect to 31a is eliminated.
[0025]
Therefore, as shown in FIG. 2A, the biasing force of the coil spring 35 of the fork 32 is obtained by holding the handle 30a and operating it upward while the seat bottom 11 is set in the seating posture. The locking of the locking groove 32a with respect to the rear striker 44 is released by the counterclockwise rotation around the support shaft 34 against this, and the seat bottom 11 is rotated counterclockwise around the front striker 43. As shown in FIG. 2B, the posture is upright.
[0026]
Conversely, when returning the seat bottom 11 in the upright posture to the seating posture, the seat bottom 11 standing in the state shown in FIG. Then, after the inclined lower end edge of the fork 32 interferes with the rear striker 44, the fork 32 is guided around the inclination and rotates about the support shaft 34 counterclockwise in FIG. 5 to eliminate the interference. Therefore, the rear striker 44 is fitted in the inner part of the outer fitting groove 31a, and in this state, the fork 32 is rotated clockwise around the support shaft 34 by the biasing force of the coil spring 35, and the rear striker 44 is engaged with the locking groove. A so-called one-touch self-lock that fits in 32a is performed.
[0027]
As shown in FIG. 5, the catch rubbers 5 are fixed to the opposing surfaces of the pair of catch plates 3 by screws. Incidentally, in FIG. 5, only the catch rubber 5 on one side is shown for convenience of illustration. The catch rubber 5 serves as a stopper for preventing over-immersion in a state where the lower end portion of the catch plate 3 is fitted between the folded edge portions 41b of the support frame body 4, and the catch plate 3 This is to prevent rattling of the seat bottom 11 in the width direction and the vertical direction while being locked to the striker 44.
[0028]
The catch rubber 5 is formed of rubber or elastic synthetic resin, and has a substantially rectangular parallelepiped rubber main body 51 and a downward extending portion 52 extending downward from the lower edge of the rubber main body 51. It is made up of. The rubber main body 51 has a structure in which the catch plate 3 is fitted in the fitting gap 45 between the folded-back edges 41b of the support frame 4 to the surface of the side wall 41a of the frame main body 41 from the opposing surface of the plate main body 31. It is dimensioned to have a width dimension that is longer than the distance. The downward extending portion 52 extends from the rubber main body 51 so that the widthwise dimension gradually decreases from the position near the catch plate 3 on the lower surface of the rubber main body 51 as it goes downward.
[0029]
Therefore, in a state where the lower end portion of the catch plate 3 is fitted in the fitting gap 45 of the support frame body 4, the downward extending portion 52 is a gap between the surface of the catch plate 3 and the folded edge portion 41 b of the support frame body 4. To prevent the catch plate 3 from rattling in the width direction, and the lower edge of the rubber body 51 abuts against the upper edge of the side wall 41a of the support frame 4 so that the catch plate 3 Immersion into the above fitting gap 45 is prevented.
[0030]
FIG. 6 is a partially cutaway perspective view for explaining details of the mounting state of the catch rubber 5. As shown in this figure, the downwardly extending portion 52 of the catch rubber 5 is dimensioned so as to correspond to the upper position of the outer fitting groove 31a of the plate body 31, and is fitted to the rear striker 44 at the lower edge. A circular arc groove 53 to be inserted is recessed. Then, in a state where the seat bottom 11 is set in the seating posture (that is, in a state where the lower portion of the plate body 31 is fitted in the fitting gap 45 of the support frame body 4), the seat bottom 11 is fitted in the outer fitting groove 31a of the plate body 31. The vertical length of the catch rubber 5 is set so that the rear striker 44 fits in the arc groove 53 of the downwardly extending portion 52 of the catch rubber 5 in close contact.
[0031]
On the other hand, between the opposing surfaces of the catch plate 3 at the top of the plate body 31, a square pipe frame 15 is installed and is welded to each plate body 31. The rubber main body 51 is dimensioned so that the upper edge abuts against the lower surface of the square pipe frame 15 in a state where the rubber main body 51 is slightly compressed and elastically deformed, whereby the screwing of the catch rubber 5 to the plate main body 31 is reinforced. At the same time, the upward force received by the catch rubber 5 from the rear striker 44 in a state in which the rear striker 44 is locked by the fork 32 is received by the square pipe frame 15, and rattling of the seat bottom 11 in the vertical direction is prevented. It has become so.
[0032]
7 is a view taken along line A of FIG. 5, (A) is a state immediately before the catch plate 3 is locked to the rear striker 44, and (B) is a state where the catch plate 3 is locked to the rear striker 44. Each state is shown. In the present invention, as shown in FIG. 7A, the inner dimension L1 between the downwardly extending portions 52 of the pair of catch rubbers 5 is between the folded edge portions 41b located inside the pair of frame main bodies 41. The dimension is set smaller than the outer dimension L2 (L1 <L2).
[0033]
Accordingly, when the catch plate 3 is lowered from the state shown in FIG. 7A, the lower end portion of the plate body 31 is fitted into the fitting gap 45 of the support frame body 4 and pressed downward. As shown in FIG. 7B, the catch rubber 5 is elastically deformed so that each downwardly extending portion 52 interferes with the folded edge portion 41b of the support frame body 4 so as to become thin. The folding edge portions 41b of the pair of support frames 4 fixed in the width direction are pressed and sandwiched by the respective downwardly extending portions 52 of the pair of catch rubbers 5 in the width direction. Shaking in the width direction of the bottom 11 is reliably prevented.
[0034]
Further, as shown in FIG. 7B, when the rear striker 44 of the support frame 4 is locked to the fork 32 of the catch plate 3, the catch rubber 5 is moved by the rear striker 44 and the square pipe frame 15. As the catch rubber 5 is compressed and deformed in the vertical direction, the rattling of the seat bottom 11 in the vertical direction is reliably prevented.
[0035]
As described in detail above, the present invention is such that the catch rubbers 5 are attached to the mutually opposing surfaces of the catch plate 3 of the seat bottom 11, and each of the catch rubbers 5 is screwed to the plate body 31. 51 and a downwardly extending portion 52 extending downward from the lower edge portion of the rubber main body 51, and an inner dimension L1 between the pair of downwardly extending portions 52 is defined by the support frame body 4. Since the dimension is set smaller than the outer dimension L2 between the inner folded edges 41b facing each other, in the state where the seat bottom 11 is set to the seating posture and the catch plate 3 is locked to the rear striker 44, the fitting gap 45 The pair of downward extending portions 52 in the width direction fitted therein is in a state in which the folded edge portions 41b of the pair of support frame bodies 4 fixed to the floor F are pressed and held by elastic force. Therefore, the backlash in the width direction of the seat bottom 11 can be reliably prevented.
[0036]
Further, the square pipe frame 15 is bridged between the pair of plate bodies 31, and the top surface of the catch rubber 5 is brought into contact with the lower surface of the square pipe frame 15, so that the fork 32 of the catch plate 3 is moved to the rear striker 44. Since the catch rubber 5 is pressed and held between the rear striker 44 and the square pipe frame 15 in the state where the seat bottom 11 is locked, the elastic force of the elastically deformed catch rubber 5 in this state causes the seat bottom 11 to move in the vertical direction. Shaking can be effectively prevented.
[0037]
The present invention is not limited to the above embodiment, and includes the following contents.
[0038]
(1) In the above embodiment, the catch rubber 5 is provided on the opposite surface side of the plate body 31 of the catch plate 3. However, in the present invention, the catch rubber 5 is provided on the opposite surface side of the plate body 31. However, the catch rubbers 5 may be provided on the opposite surface of the plate body 31. However, in this case, it is necessary to make the outer dimension between the downwardly extending portions 52 of the pair of catch rubbers 5 larger than the inner dimension between the folded edge portions 41 b located outside the pair of support frame bodies 4.
[0039]
(2) In the above embodiment, the rattling prevention structure according to the present invention (that is, the inner dimension L1 between the downwardly extending portions 52 of the catch rubber 5 is set to the outside between the folded edge portions 41b of the support frame 4). Although the structure in which the seat back 12 is configured to be foldable on the seat bottom 11 is applied to the seat 1 that is smaller than the dimension L2, the present invention is not limited to the application to the seat 1. The present invention can also be applied to a sheet in which the seat back 12 is not foldable on the seat bottom 11 or a sheet in which the seat back 12 does not exist.
[0040]
(3) In the above-described embodiment, the arc groove 53 that fits into the rear striker 44 is recessed at the lower edge of the catch rubber 5, but in the present invention, the arc groove 53 is recessed in the catch rubber 5. If the catch rubber 5 is dimensioned so that the lower end edge presses the rear striker 44, the arc groove 53 is not particularly required.
[0041]
【The invention's effect】
According to the first aspect of the present invention, by setting the seat bottom to the seating posture, the lock mechanism is engaged with the striker while the support rubber body is in contact with the catch rubber while being guided in an inclined manner. The seating posture of the seat bottom can be stabilized. When the seat bottom is locked to the support frame by the lock mechanisms and each catch rubber is in contact with the support frame, the catch rubber is elastically deformed. Since the seat bottom set to the seating posture is stretched in the opposite direction by each catch rubber, this can reliably prevent the seat bottom from rattling in the width direction. it can.
[0042]
According to a second aspect of the present invention, each support frame is formed in a U shape in a sectional view, and an arcuate folded edge is provided in a sectional view formed by folding an upper edge, and each catch rubber is provided. Is set so as to come into contact with each folded edge and each striker while being elastically deformed. By setting the seat bottom to the seating posture, the catch rubber is guided to the folded edge while being elastically deformed. It is possible to prevent rattling of the seat bottom in the width direction and to prevent rattling in the vertical direction as well.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a flip-up type seat to which a rattling prevention structure according to the present invention is applied, wherein (A) is a view from the front side, and (B) is from the back side. FIG.
FIG. 2 is a perspective view showing an embodiment of a flip-up type seat to which the rattling prevention structure according to the present invention is applied, in which (a) is a state in which a seat back is folded on a seat bottom; ) Shows a state in which the seat bottom is flipped up and set in a standing posture.
FIG. 3 is a perspective view for explaining a support frame body and a mounting state thereof on a floor.
FIG. 4 is a perspective view showing an embodiment of a leg plate.
FIG. 5 is a perspective view showing an embodiment of a catch plate.
FIG. 6 is a partially cutaway perspective view for explaining details of a state in which a catch rubber is mounted.
FIGS. 7A and 7B are A line views of FIG.
[Explanation of symbols]
F floor 1 seat 11 seat bottom 12 seat back 15 square pipe frame 3 catch plate 31 plate body 32 fork 4 support frame 43 front striker 44 rear striker 45 fitting gap (mounting groove)
5 Catch rubber 52 Downward extension

Claims (2)

A rattling prevention structure applied to a seat that is configured so that the seat bottom can be changed between a substantially horizontal sitting posture and a substantially vertical standing posture by rotating up and down with the front edge as a fulcrum. The floor is provided with a pair of support frames extending in the front-rear direction for supporting the seat bottom, and the front edge of the seat bottom is pivotally supported at the front of each support frame. A horizontal axis extending in the width direction is provided, and a striker extending in the width direction is provided at the rear, while the seat bottom is a width that engages the striker and locks the seating posture of the seat bottom. the direction the pair of the lock mechanism, the support frame and the striker and the catch rubber laminated on oppositely disposed widthwise pair of catch plates and the catch plate so as to contact is provided in the upper The support frame has seat bottom in the width direction a pair of clearance for clamping the catch plate and the catch rubber in the posture set state is formed on the seating posture, either or both of the gaps and catch Rubber A guide slope that guides the contact between the two is formed, and the gap has a minimum gap dimension set smaller than a thickness dimension of the catch plate plus a thickness dimension of the catch rubber. Prevents rattling of the sheet.   2. The structure for preventing rattling of a sheet according to claim 1, wherein each of the support frames is formed in a U shape in a sectional view and is folded in an arc shape in a sectional view formed by folding an upper edge portion. A structure for preventing rattling of a sheet, comprising an edge, wherein each of the catch rubbers is shaped so as to come into contact with the folded edge and the striker while being elastically deformed.

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