JP5989448B2 - Dynamic damper device for vehicle seat - Google Patents

Description

  The present invention relates to an improvement in a dynamic damper device for a vehicle seat, in which a dynamic damper is connected to a damper mounting portion of a seat installed on a vehicle such as an automobile via a connecting means.

  Such a dynamic damper device for a vehicle seat is known as disclosed in Patent Document 1.

JP-A-10-226255

  In the dynamic damper device for a vehicle seat disclosed in Patent Document 1, the dynamic damper includes a weight and a pair of rubber blocks joined to the left and right sides of the weight, and the outer ends of these rubber blocks. Are connected to a pair of left and right damper mounting portions of the frame of the headrest.

  However, in the above structure, since the distance between the pair of rubber blocks is constant, the dynamic damper can be connected only to the specified damper mounting part, and is not versatile. Therefore, the specification of the damper mounting part is For different seats, dynamic dampers must be newly designed and manufactured correspondingly, and the cost is unavoidable.

  The present invention has been made in view of such circumstances, and is a highly versatile dynamic damper for a vehicle seat, in which a common dynamic damper can be attached to a plurality of types of seats having different specifications of the damper attachment portion. An object is to provide an apparatus.

In order to achieve the above object, the present invention provides a dynamic damper device for a vehicle seat, wherein the dynamic damper is connected to a damper mounting portion of a seat installed on the vehicle via a connecting means . and weight, said weight is composed of a damper casing which supports via an elastic member, corresponding to said connecting means, to at least change in distance of the distance and angle between the damper attachment portion及 beauty the damper case to configure the variable coupling hand stage to be coupled between said damper attachment portion及 beauty the damper case, the variable coupling means, stepwise length between the damper case and the damper attachment portion The first feature is that it is adjustable .

  According to the present invention, in addition to the first feature, the variable connection means includes a connection arm connected to a dynamic damper and a plurality of outer connection portions provided at different locations of the connection arm. A second feature is that a part of the outer connecting portion is selected and connected to the damper mounting portion.

  In addition to the first aspect of the present invention, the variable connecting means includes a connecting arm, an outer connecting portion formed at one end of the connecting arm and connected to the damper mounting portion, and the other end side of the connecting arm. And a plurality of inner connecting portions provided at different locations, and selecting a part of the plurality of inner connecting portions to connect to the dynamic damper is a third feature.

  Furthermore, the present invention is characterized in that, in addition to the second or third feature, the connecting arm is rotatably connected to a dynamic damper.

  Furthermore, in addition to any of the first to fourth features, the present invention provides the variable coupling means symmetrically sandwiching the dynamic damper in order to attach the dynamic damper to the pair of damper mounting portions provided on the seat. A fifth feature is that at least one pair is disposed in each.

  Furthermore, in addition to the fifth feature, the sixth feature of the present invention is that the variable connecting means is disposed symmetrically with the center of gravity of the weight of the dynamic damper interposed therebetween.

  In addition to the sixth feature, the seventh feature of the present invention is that the variable coupling means is arranged on a straight line passing through the center of gravity of the weight of the dynamic damper and the damper mounting portion.

According to a first aspect of the present invention, the connecting means can be linked between the damper mounting portion and the dynamic damper in response to at least changes in the distance of the distance and angle between the damper mounting portion and the dynamic damper of the seat Since the length between the damper attachment portion and the damper case can be adjusted in stages, the variable connection means has a plurality of types of seats having different specifications of the damper attachment portion. For this, a common dynamic damper can be attached, so that the versatility of the dynamic damper device can be improved and the cost can be reduced.

  According to the second feature of the present invention, the variable connecting means is composed of a connecting arm connected to the dynamic damper, and a plurality of outer connecting portions provided at different locations of the connecting arm, and the plurality of outer connecting parts. Since a part of the portion is selected and connected to the damper mounting portion of the seat, in a plurality of seats having different distances between the damper mounting portion and the dynamic damper, some outer connecting portions suitable for use from the plurality of outer connecting portions. By selecting, a common dynamic damper can be attached to the damper attachment portion.

  According to the third feature of the present invention, the variable connecting means includes a connecting arm, an outer connecting portion formed at one end of the connecting arm and connected to the damper mounting portion, and different locations on the other end side of the connecting arm. And a plurality of inner connecting portions provided in the plurality of inner connecting portions, and a part of the inner connecting portions is selected and connected to the dynamic damper. A common dynamic damper can be attached to the damper mounting part by selecting a part of the inner connecting part suitable for use from the inner connecting part.

  According to the fourth aspect of the present invention, since the connecting arm is rotatably connected to the dynamic damper, the connecting arm is connected to the dynamic damper in a plurality of seats having different angles between the damper mounting portion and the dynamic damper. A common dynamic damper can be attached to the damper mounting portion simply by rotating.

  According to the fifth feature of the present invention, at least one pair of the variable coupling means is disposed symmetrically across the dynamic damper in order to attach the dynamic damper to the pair of damper attachment portions provided on the seat. The dynamic damper attached to the seat will always be placed in the center between the pair of damper mounting parts, to stabilize the dynamic damper and to effectively exhibit the damping function of the dynamic damper on the seat Can do.

  According to the sixth aspect of the present invention, since the variable connecting means is disposed symmetrically with the center of gravity of the weight of the dynamic damper interposed therebetween, the center of gravity of the weight of the dynamic damper attached to various seats is a pair. Accordingly, the support of the weight of the dynamic damper can be stabilized and the vibration damping function for the seat of the dynamic damper can be effectively exhibited.

  According to the seventh aspect of the present invention, since the variable connecting means is arranged on a straight line passing through the center of gravity of the weight of the dynamic damper and the damper mounting portion, the support of the weight of the dynamic damper is further stabilized. At the same time, the vibration damping function for the seat of the dynamic damper can be more effectively exhibited.

The perspective view of the headrest of the seat for vehicles concerning a 1st embodiment of the present invention. FIG. 2 is a sectional view taken along line 2-2 in FIG. 1. FIG. 3 is a view corresponding to FIG. 2 showing a first reference embodiment of the present invention. The front view of the headrest of the seat for vehicles concerning a 2nd embodiment of the present invention. FIG. 5 is a sectional view taken along line 5-5 of FIG. FIG. 4 is a view corresponding to FIG. 2 showing a second reference embodiment of the present invention. The front view of the seat back of the seat for motor vehicles concerning a 3rd embodiment of the present invention. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. In the said 3rd Embodiment, the corresponding figure with FIG. 7 which shows the attachment aspect from which a dynamic damper differs is shown.

  First, the first embodiment of the present invention shown in FIGS. 1 and 2 will be described. In the following description, front and rear and left and right are based on a vehicle as a vehicle to which the present invention is applied.

  Reference numeral H denotes a headrest that forms a part of a vehicle seat. This headrest H is comprised by the headrest frame 1 and the cushion member 2 formed so that the upper part of this headrest frame 1 may be wrapped, and the headrest frame 1 is supported by the upper part of the seat back frame which is not shown in figure so that raising / lowering is possible. A pair of left and right pillar portions 1a and 1a, a pair of left and right upper bone portions 1b and 1b extending forward from the upper end portion of the pillar portions 1a and 1a, and a lower portion bent from the front ends of the upper bone portions 1b and 1b A pair of left and right front longitudinal bone portions 1c, 1c and a front transverse bone portion 1d that interconnects the lower ends of the front longitudinal bone portions 1c, 1c, and the pair of front longitudinal bone portions 1c, 1c. As a damper mounting portion, the dynamic damper D is attached to them as follows.

  The dynamic damper D includes a damper case 5 that is flat in the front-rear direction, a weight 6 that is substantially similar to the damper case 5 that is accommodated in the damper case 5, and a damper case that wraps the weight 6 so as to vibrate. 5 and an elastic member 7 made of an elastic material such as rubber. The damper case 5 is composed of a pair of case halves 5a and 5b made of synthetic resin that are connected to each other so as to be able to be opened and closed so that the weight 6 and the elastic member 7 can be accommodated and taken out.

The damper case 5 is connected to the damper mounting portions 1c and 1c, that is, the front longitudinal bone portions 1c and 1c via a pair of variable connecting means 3 and 3 that are symmetrically configured on the left and right sides thereof. Each variable connection means 3 is connected to one of the left and right side surfaces of the case halves 5a and 5b by integral molding, and extends to the left and right outwards. a plurality of elastic gripping parts 10, 10 and (the outer connecting portion) provided on, the plurality of elastic gripping portions 10 and 10, while being curved in Yu arc respectively, alternately opening 11 They are connected together in the opposite direction.

  The left and right variable connecting means 3 and 3 are arranged symmetrically with respect to the center of gravity G of the weight 6, and are preferably arranged on a straight line L passing through the center of gravity G and the damper mounting portions 1c and 1c. .

  Thus, when attaching the dynamic damper D to the damper mounting portions 1c, 1c of the headrest H, a pair of left and right arms separating the distance corresponding to the distance between the left and right damper mounting portions 1c, 1c from the left and right connecting arms 9, 9. When the elastic gripping portions 10 and 10 are selected and the elastic gripping portions 10 and 10 are pressed against the left and right damper mounting portions 1c and 1c from the respective openings 11, the elastic gripping portions 10 and 10 are attached to the damper. The outer peripheral surfaces of the parts 1c and 1c are connected by being snap-engaged over a half circumference. Therefore, for the headrest H in which the distance between the left and right damper mounting portions 1c, 1c is different from the above, a pair of left and right elastic gripping portions 10, 10 is selected from the left and right connecting arms 9, 9. By snap-engaging them with the damper mounting portions 1c, 1c, a common dynamic damper D can be mounted on different headrests H, and a highly versatile dynamic damper device can be provided at low cost.

  After the dynamic damper D is mounted, the cushion member 2 is foam-molded into a teardrop type so as to wrap them from the upper end of the pillar portions 1a, 1a to the front transverse bone portion 1d. The variable connection means 3 and 3 are embedded. At that time, the cushion member 2 is prevented from entering the inside thereof by the damper case 5, so that the spring constant of the elastic member 7 is not changed.

  When the automobile vibration is transmitted to the seat and the headrest H is vibrated while the automobile is running, the weight 6 resonates with the elastic deformation of the elastic member 7 in the damper case 5 supported by the headrest frame 1 of the headrest H. Thus, vibration energy of the seat back and the headrest is absorbed and absorbed, and the headrest H and the seat back can be suppressed.

  By the way, since the variable connecting means 3 for connecting to the left and right damper mounting portions 1c, 1c in the headrest H is symmetrically disposed across the dynamic damper D, the dynamic damper D attached to the various headrests H is always left and right. It is arranged in the central part between the damper mounting portions 1c and 1c, and it is possible to stabilize the support of the dynamic damper D and to effectively exhibit the damping function for the headrest H and the seat back of the dynamic damper D. it can.

  Furthermore, since the left and right variable connecting means 3 and 3 are symmetrically arranged with the center of gravity G of the weight 6 of the dynamic damper D interposed therebetween, the center of gravity G of the weight 6 of the dynamic damper D attached to various headrests is It will be arranged at the center between the pair of damper mounting parts 1c, 1c, and while stabilizing the support of the weight 6 of the dynamic damper D, the damping function for the headrest H and the seat back of the dynamic damper D is further improved. It can be exhibited effectively.

  Furthermore, the left and right variable connecting means 3 are arranged on a straight line L passing through the center of gravity G of the weight 6 of the dynamic damper D and the left and right damper mounting portions 1c, 1c. The support can be further stabilized and the vibration damping function for the headrest H and the seat back of the dynamic damper D can be more effectively exhibited.

Next, a first reference embodiment of the present invention shown in FIG. 3 will be described.

In the first reference embodiment, the damper case 5 in the first embodiment is eliminated, and the base end portions of the pair of connecting arms 9 and 9 are bonded to the left and right outer surfaces of the elastic member 7 enclosing the weight 6. Since the other configurations are the same as those of the first embodiment, the same reference numerals are given to the portions corresponding to those of the first embodiment in FIG. .

In the first reference embodiment, the cost can be reduced by eliminating the damper case.

Next, a second embodiment of the present invention shown in FIGS. 4 and 5 will be described.

In the second embodiment, the left and right variable connecting means 3 and 3 include a connecting arm 19 made of synthetic resin, an elastic gripping part 10 (outer connecting part) integrally formed at one end of the connecting arm 19, The connecting arm 19 includes a plurality of connecting holes 13 and 13 (inner connecting portions) provided at different locations on the other end side. The elastic gripping portion 10 is curved in a dominant arc shape, and can be snap-engaged from the opening 11 to the outer peripheral surface of the damper mounting portion 1c of the headrest H over half a circumference to grip it. On the other hand, a pair of left and right elastic locking claws 14, 14 project from the front or rear surface of the damper case 5, and these elastic locking claws 14, 14 are connected to the plurality of connection holes 13 of the left and right connection arms 19, 19. , 13; 13, 13 can be selectively snap-engaged and connected.

  Since the other configuration is the same as that of the first embodiment, the same reference numerals are given to the portions corresponding to those of the first embodiment in FIGS.

  Thus, when attaching the dynamic damper D to the damper attachment portions 1c, 1c of the headrest H, first, the elastic gripping portions 10, 10 of the connecting arms 19, 19 are snapped to the left and right damper attachment portions 1c, 1c of the headrest H. After joining, when the damper case 5 is disposed at the center between the left and right damper mounting portions 1c, 1c, the left and right elastic locking claws 14, 14 are snap-engaged with the connecting holes 13, 13 closest to them. And connect. Therefore, for the headrest H in which the distance between the left and right damper mounting portions 1c and 1c is different from the above, the connection holes 13 and 13 different from the above are selected from the left and right connection arms 19 and 19 and elastically applied thereto. By snap-engaging the locking claws 14, 14, a common dynamic damper D can be attached to different headrests H, and a highly versatile dynamic damper device can be provided at low cost.

Next, a second reference embodiment of the present invention shown in FIG. 6 will be described.

In the second reference embodiment, the left and right variable connecting means 3, 3 are each made of a synthetic resin connecting arm 29 and a spring member 16 made of rubber or the like for connecting one end of the connecting arm 29 to the outer surface of the damper case 5. And the elastic gripping part 10 formed integrally with the other end of the connecting arm 29. The elastic gripping part 10 is curved in a dominant arc shape, and the damper mounting part 1c of the headrest H from the opening part 11 thereof. The outer peripheral surface of this can be snap-engaged over half a circumference to grip it. Since the other configuration is the same as that of the first embodiment, portions corresponding to those of the first embodiment are denoted by the same reference numerals in FIG.

And Thus, according to the second referential embodiment, the left and right damper mounting portion 1c, depending on the change in the distance between 1c, by expanding and contracting the left and right spring members 16, 16, a plurality of the headrest H damper The elastic gripping portions 10 and 10 can be snap-engaged with the attachment portions 1c and 1c, and a highly versatile dynamic damper device can be provided at low cost.

Finally, a third embodiment of the present invention shown in FIGS. 7 to 9 will be described.

  In the third embodiment, the dynamic damper D is attached to the seat back B of the seat. The seat back B includes a seat back frame 30 and a cushion member 31 supported on the front surface thereof. The seat back frame 30 is composed of a pair of left and right support columns 30a and 30a and a connecting portion 30b that integrally connects the upper ends thereof, and the connecting portion 30b is a pair of left and right inclined portions 30b1 arranged in a C-shape. , 30b1.

  The left and right variable connecting means 3, 3 include a connecting arm 39 made of synthetic resin, an elastic gripping part 10 (outer connecting part) integrally formed at one end of the connecting arm 39, and the other end side of the connecting arm 39. Are formed with a plurality of circular connection holes 23, 23... (Inner connection portions) provided at different locations. The elastic gripping portion 10 is curved in a dominant arc shape, and is snap-engaged from the opening portion 11 to the outer peripheral surface of the column portion 30a of the seat back frame 30 or the inclined portion 30b1 of the connecting portion 30b and grips it. To get. On the other hand, a pair of left and right circular elastic locking claws 24, 24 project from the front or rear surface of the damper case 5, and these elastic locking claws 24, 24 are connected to a plurality of left and right connecting arms 39, 39. The connecting holes 23, 23...; 23, 23.

  Since the configuration of the dynamic damper D is the same as that of the first embodiment, the same reference numerals are assigned to the portions corresponding to those of the first embodiment in FIGS. .

According to this embodiment, as shown in FIG. 7, when the dynamic damper D is attached to the left and right support columns 30a, 30a via the connecting arms 39, 39, corresponding to the distance between the support columns 30a, 30a, As in the first reference embodiment, the elastic locking claws 24, 24 are selectively engaged with the plurality of connecting holes 23, 23,... The dynamic damper D can be attached to a plurality of types of seat backs B having different distances between 30a and 30a. Moreover, since each connecting arm 39 can be rotated around the elastic locking claw 24, as shown in FIG. 9, the left and right connecting arms 39, 39 pivotally supported by the damper case 5 are appropriately inclined, The elastic gripping portions 10 and 10 can be engaged with the left and right inclined portions 30b1 and 30b1. In this manner, the dynamic damper D can be attached to the inclined portions 30b1 and 30b1, and the versatility of the dynamic damper device can be further improved.

  The present invention is not limited to the above-described embodiment, and various design changes can be made without departing from the gist thereof. For example, the present invention can be applied to a seat portion of a seat. One of the case halves 17a and 17b constituting the damper case 17 can be formed in a box shape having an opening, and the other can be formed in a lid shape for closing the opening. Further, the present invention is not limited to automobiles but can be applied to seats of railway vehicles, aircrafts and the like.

D ... Dynamic damper G ... Weight center of gravity B ... Seat back H ... Headrest 1c ... Damper mounting part 3 ... ... Variable connection means 6 ... / Weight 9 ...... Connection arms 10, 10 ... Multiple outer connection parts (multiple elastic gripping parts)
13, 13.. Multiple inner connecting parts (multiple connecting holes)
19... Connecting arms 23, 23.. Multiple inner connecting portions (multiple inner connecting holes)
30a ... ・ Damper connecting part (post)
30b1 ... Damper connecting part (inclined part)

Claims (7)

Formed by connecting through the connecting means the dynamic dampers to the damper attachment portion of the sheet to be installed in a vehicle, in the dynamic damper device of the vehicle seat,
The dynamic damper comprises a weight and a damper case that supports the weight via an elastic member,
Said coupling means, the damper mounting portion及 beauty distance and at a distance variable connection hands stage to be coupled between said damper attachment portion及 beauty the damper case in response to a change of one of the angle between the damper case configured to,
The dynamic damper device for a vehicle seat, wherein the variable connecting means is capable of stepwise adjusting a length between the damper mounting portion and the damper case . The vehicle seat dynamic damper device according to claim 1,
The variable coupling hand stage, selection and connection arm linked to dynamic dampers, composed of a plurality of outer coupling portion provided at different locations of this coupling arm, a portion of the plurality of outer coupling portion Then, the vehicle seat dynamic damper device is characterized in that it is connected to the damper mounting portion . The vehicle seat dynamic damper device according to claim 1,
Multiple provided the variable coupling hands stage, a connecting arm, and the outer coupling portion that is formed at one end of the connecting arm is connected to the damper mounting portion, to the different parts of the other end of the connecting arm of constituted by an inner coupling portion, characterized in that connected to the dynamic dampers to select a portion of the plurality of inner connection portion, a dynamic damper of the vehicle seat. The dynamic damper device for a vehicle seat according to claim 2 or 3,
The connecting arm, characterized in that pivotally connected to the dynamic dampers, the dynamic damper of the vehicle seat. In the vehicle seat dynamic damper device according to any one of claims 1 to 4,
To mount the dynamic dampers to a pair of damper mounting portion provided in the seat, the variable coupling hand stage, characterized in that symmetrically least one pair disposed across the dynamic dampers, the vehicle seat dynamic Damper device. The dynamic damper device for a vehicle seat according to claim 5,
The variable connecting hands stages, characterized in that symmetrically arranged across the center of gravity of the weight of the dynamic dampers, the dynamic damper of the vehicle seat. The dynamic damper device for a vehicle seat according to claim 6,
Said variable coupling hand stage, characterized by being arranged in a straight line passing through the center of gravity and the damper attachment portion of the weight of the dynamic dampers, the dynamic damper of the vehicle seat.

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