JP2005231434A - Auto position lifter structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an auto position lifter structure changing positions of a seat upward and downward without manual or automatic motor-driving operations and the like. <P>SOLUTION: An auto position lifter mechanism 13 constituting an auto position lifter structure is mounted between a seat cushion part 3a and a floor panel 12. The auto position lifter mechanism 13 can move the seat cushion part 3a along the vertical direction, and stops the vertical movement of the seat cushion part 3a at a height position for balancing an energizing force of a spring 14 for holding loads and a weight of an occupant seating on a seat face 3c of the seat cushion part 3a in a manner to change a stop position according to the occupants to be seated, so as to adjust the height position under a seating condition. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an automatic position lifter structure that is provided on a seat of a vehicle and can adjust a position in a height direction.

  Conventionally, as shown in FIGS. 19 to 21, it is known that a seat 3 having a vertical position adjusting mechanism is provided in a compartment 2 of a vehicle 1 such as an automobile (for example, Patent Documents). 1 and 2).

  First, from the configuration, in this conventional vertical position adjustment mechanism, the seat 3 mainly composed of the seat cushion portion 3a and the seat back portion 3b is mounted on the vehicle body side below the seat cushion portion 3a. A base bracket member 4 is provided.

  Between the base bracket member 4 and the front and rear mounting brackets 5 and 6 provided on the lower surface side of the seat cushion portion 3a, the front link member 7 and the rear link member 8 are respectively connected to the end portions. Are connected so as to be rotatable.

  Among these, a rotary operation dial member 10 is connected to the rear link member 8 via a link connecting rod member 9.

  As shown in FIG. 21, the rotary operation dial member 10 is positioned between the side surface 4a of the base bracket member 4 and the interior member 11 in the passenger compartment 2, and can be rotated on the side surface 4a. It is attached.

  Then, as shown in FIGS. 19 and 20, the rotation of the rotary operation dial member 10 causes the rear link member 8 to stand up or lie down via the link connecting rod member 9, and the seat cushion. It is comprised so that the part 3a may be raised or lowered.

  Next, the operation of the conventional vertical position adjusting mechanism for the seat 3 will be described.

In the conventional vertical position adjustment mechanism for the seat 3 configured as described above, a passenger seated in the seat 3 places a hand between the interior member 11 in the passenger compartment 2 and the side surface 4a of the base bracket member 4. Then, when the rotary operation dial member 10 is rotated, the rear link member 8 is erected as shown in FIG. 20 or laid down as shown in FIG. 19 via the link connecting rod member 9. The seat cushion portion 3a is raised or lowered.
Japanese Patent Laying-Open No. 2001-88589 (FIG. 1, paragraphs 0009 to 0026) JP 2002-362200 A (FIGS. 1 to 3, paragraphs 0013 to 0039)

  However, in the conventional vertical position adjusting mechanism of the seat 3, the dial switch operation for raising or lowering the seat cushion portion 3a, the lever operation or the seat 3 having the electrically driven vertical position adjusting mechanism, There is a problem that the operation of is complicated.

  In addition, the occupant seated in the seat 3 has to put a hand into the narrow space between the interior member 11 in the passenger compartment 2 and the side surface 4a of the base bracket member 4 and perform dial operation.

  For this reason, even when the rotary operation dial member 10 is configured by the operation lever or the like, in addition to a space that allows the movement of the operation lever, a space that allows operation in consideration of the movement of the hand is provided. There was a problem that it had to be provided in advance.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an auto position lifter structure that can change the vertical position of a seat without performing an operation of electrically driving manually or automatically.

  The present invention has been made paying attention to such problems. In the invention according to claim 1, the seat cushion portion of the seat placed on the floor panel in the passenger compartment and the floor panel are provided. An auto position lifter structure that is mounted to enable the seat cushion portion to move in the vertical direction and to change the stop position according to an occupant seated. The seat cushion portion is separated from the floor panel. The seat cushion portion is moved in the vertical direction at a height position where the biasing means for biasing in the direction to be pushed, the biasing force by the biasing means, and the weight of the occupant seated on the seat cushion portion are balanced. It is characterized by an automatic position lifter structure having automatic height adjustment means for stopping and adjusting the height position in the seated state.

  Further, according to a second aspect of the present invention, the automatic height adjusting means includes a height position where a biasing force by the biasing means and a weight of an occupant seated on the seat cushion portion are balanced, 2. An automatic position lifter structure according to claim 1, further comprising an automatic locking means for automatically locking the movement of the seat cushion portion.

  Further, according to a third aspect of the present invention, the seat cushion portion is lifted by the urging force of the urging means in an unloaded state in which the occupant leaves the seat. The auto-position lifter structure according to claim 1 or 2, further comprising a buffer means for relaxing the speed of the operation.

  According to a fourth aspect of the present invention, the automatic height adjusting means unlocks the movement of the seat cushion portion by the automatic locking means after a predetermined time has passed immediately after the occupant leaves the seat. The automatic position lifter structure according to any one of claims 1 to 3, further comprising automatic return means for returning the height position of the seat cushion portion to an initial position.

  Further, according to a fifth aspect of the present invention, in the automatic height adjusting means, an upper base member provided on the lower surface side of the seat cushion portion is directed upward from a lower base member fixed to the floor panel. The slidably inserted slide pole member is slidably inserted, and the urging means is interposed around the slide pole member between the lower surface portion of the upper base member and the upper surface portion of the lower base member. The auto position lifter structure according to any one of claims 1 to 4 is provided.

  According to a sixth aspect of the present invention, the slide pole member is formed with an engaged step portion of the automatic lock means, and the lower surface portion of the upper base member is provided with the engaged step portion. An engagement claw portion that engages with the engagement portion is provided, and the engagement claw portion is moved so as to be engaged with the engaged stepped portion when the height direction position of the seat cushion portion has reached the stop position. 6. The auto position lifter structure according to claim 5, further comprising a lock engagement release bracket member to be operated.

  Further, according to a seventh aspect of the present invention, the lock engagement release bracket member releases the engagement of the engagement claw portion with the engaged step portion when the seat cushion portion rises. The auto position lifter structure according to claim 6 is configured to be configured as described above.

  Further, according to the eighth aspect of the present invention, the outer cylinder portion of the slide pole member in which the engaged stepped portion is formed is configured to be separable in the height direction from the upper surface portion of the lower base member, The damper member of the buffer means is provided in the outer cylinder portion, and the cylinder portion of the damper member is fixed to the upper surface portion, and the rod tip of the damper member is fixed to the outer cylinder portion, so that the separation direction And the engagement claw portion is configured to raise the outer cylinder portion together with the upper base member while the engagement claw portion is engaged with the engaged stepped portion. It is characterized by the auto-position lifter structure described in 6 or 7.

  According to a ninth aspect of the present invention, each of the lock engagement release brackets is provided on an upper surface portion of the lower base member and is connected to an extension damper member that can expand and contract in the height direction. The automatic position lifter structure according to any one of 1 to 8 is characterized.

  In addition, what is described in claim 10 is characterized by the auto-position lifter structure according to claim 9, wherein the damping force of the extension damper member is set smaller than the force used for the operation of the lock engagement release bracket.

  Furthermore, what is described in claim 11 is that the damping force of the extension damper member is set so as to be weaker than the damping force of the damper member in the outer cylinder part. It is characterized by.

  When the occupant is seated on the seat cushion portion of the seat, the weight of the occupant is increased by the urging force by the urging means by the automatic height adjusting means. The movement along the vertical direction of the seat cushion is stopped at a balanced height.

  For this reason, the height position in the seated state is automatically adjusted by the automatic height adjusting means, so that the occupant can remove the seat from the seat without performing manual or automatic electric driving operation or the like as in the prior art. It is possible to change the vertical position by simply sitting on the seat cushion.

  According to a second aspect of the present invention, the automatic locking means provided in the automatic height adjusting means balances the urging force of the urging means with the weight of the occupant seated on the seat cushion portion. The movement of the seat cushion portion is automatically locked at the height position.

  For this reason, it is not necessary to lock manually and the convenience of use is good.

  Further, according to a third aspect of the present invention, the buffer means provided in the automatic height adjusting means relaxes the speed at which the seat cushion portion ascends by the urging force of the urging means.

  For this reason, there is no possibility that the seat will rise suddenly even if the occupant leaves the seat and becomes unloaded.

  According to a fourth aspect of the present invention, immediately after the occupant leaves the seat, the lock of the movement of the seat cushion by the automatic locking means is locked by the automatic return means provided in the automatic height adjusting means. After a predetermined time has elapsed.

  For this reason, since a certain amount of time can be earned until the height position of the seat cushion part returns to the initial position after the occupant leaves the seat, when the occupant re-sits, the locked state is maintained, and the seat Can be lowered, and the convenience of use is good compared to the case of re-adjustment from the initial position.

  Further, according to a fifth aspect of the present invention, the urging means of the automatic height adjusting means includes a lower surface portion of an upper base member provided on the lower surface side of the seat cushion portion and an upper surface portion of the lower base member. It is provided in between.

  For this reason, since the sliding movement direction in the vertical direction of the seating portion along the slide pole member inserted through the upper base member can be matched with the direction in which the urging force of the urging means acts, The urging force can be efficiently applied to the seat cushion portion via the upper base member.

  In addition, since the sliding movement direction of the seat section can be limited to the vertical direction, for example, the seat cushion section moves in the front and rear directions or the angle is inclined with the movement in the vertical direction. Therefore, it is possible to efficiently adjust the height in the vertical direction as compared with the case of the above.

  According to a sixth aspect of the present invention, in the state in which the height direction position of the seat cushion portion reaches the stop position, the engagement step portion of the automatic locking means formed on the slide pole member is provided. On the other hand, the engagement claw portion provided on the lower surface portion of the upper base member is moved and engaged by the lock engagement release bracket member.

  For this reason, since the movement of the seat cushion portion is automatically locked, the height position of the seat cushion portion is fixed and a stable seating posture can be obtained in the occupant seated state.

  Further, it is not necessary to perform manual locking, and the convenience of use is good.

  Further, according to a seventh aspect of the present invention, when the seat cushion portion is raised by the lock engagement release bracket member, the engagement claw portion of the automatic locking means is moved to the engaged step portion. The engagement is released.

  When the occupant leaves and the weight of the occupant is no longer applied to the seat cushion portion, the seat cushion portion is raised by the urging force of the urging means.

  At this time, the engagement of the engagement claw portion of the automatic locking means with the engaged step portion is released by the lock engagement release bracket member.

  Therefore, the seat cushion portion can be further raised and returned to the initial position.

  Further, according to the eighth aspect of the present invention, the outer cylinder part rises in the separation direction together with the upper base member while the engaging claw part is engaged with the engaged stepped part. Then, the rising speed is alleviated by the damper member provided in the outer cylinder portion of the slide pole member.

  Since the damper member is covered by the outer cylindrical portion of the slide pole member, the appearance quality is good, and a separate mounting place is not required, and the space efficiency is also good.

  According to a ninth aspect of the present invention, the lock engagement release bracket is connected to an extension damper member that can expand and contract in the height direction from the upper surface portion of the lower base member.

  For this reason, the amount of vertical movement of the seat cushion portion in the locked state can be increased, and even after the lock is released, the rising speed of the seat cushion portion can be reduced by the buffering force of the extension damper member.

  According to a tenth aspect of the present invention, when the extension damper member finishes extending, the lock engagement release bracket performs a lock release operation.

  For this reason, the amount of vertical movement of the seat cushion portion in the locked state can be increased.

  Further, in the present invention, the damping force of the extension damper member is set to be weaker than the damping force of the damper member in the outer cylinder portion.

  Therefore, first, when the occupant leaves the seat cushion part, the damper member and the extension damper member in the outer cylinder part are extended while the locked state is maintained, and the dampers in both the outer cylinder parts are extended. The rising speed is reduced by the damping force of the member and the extension damper member.

  Even after the lock is released, the rising speed of the seat cushion portion is reduced by the buffering force of the extension damper member. For this reason, the buffering force can be set large in the vicinity of the movement end in the vertical direction of the seat cushion portion, and the occurrence of a hitting sound or the like at the end can be suppressed.

  1 to 18 show an auto position lifter structure of the best mode for carrying out the present invention.

  The same or equivalent parts as those in the conventional example will be described with the same reference numerals.

  First, in terms of configuration, in the best position auto-position lifter structure, as shown in FIG. 1, the seat 3 placed on the floor panel 12 in the passenger compartment 2 includes a seat cushion portion 3a and a seat. The back part 3b is mainly comprised.

  Among these, an auto position lifter mechanism 13 constituting an auto position lifter structure is mounted between the seat cushion portion 3 a and the floor panel 12.

  The automatic position lifter mechanism 13 is configured to allow the seat cushion portion 3a to move in the vertical direction and to change the stop position according to the occupant seated.

  1 to 9 show an auto-position lifter structure according to Example 1 of the embodiment of the present invention.

  First, the configuration of the auto position lifter structure of the first embodiment will be described mainly with reference to FIGS. 1 to 3. The auto cushion lifter mechanism 13 of this auto position lifter structure has the seat cushion portion 3a as described above. A load holding spring 14 is provided as an urging means that urges the floor panel 12 away from the floor panel 12.

  Further, an upper base member 15 is provided on the lower surface side of the seat cushion portion 3a.

  The upper base member 15 is provided with a plurality of slide guide groove portions 15b and 15b which are recessed so as to open the lower surface portion 15a side by extending the longitudinal direction along the vertical direction. Yes.

  Further, a lower base member 16 is fixed to the upper surface side of the floor panel 12.

  The lower base member 16 has a plurality of slide pole members 17 and 17 projecting upward from the upper surface portion 16b side of the flat base body 16a fixed to the floor panel 12.

  The insides of the slide pole members 17 and 17 are formed so as to have a substantially hollow cylindrical shape, and are slidably inserted into the slide guide groove portions 15b and 15b from below.

  In addition, on the outer peripheral surface of each of these slide pole members 17, engaged stepped portions 18 that constitute a part of automatic locking means 20 described later are formed. The engaged stepped portion 18 is formed so as to be integral with the plurality of engaging steps, protruding toward the substantially central portion inside the auto position lifter mechanism 13.

  Around the slide pole members 17, 17, the load holding spring 14 as the urging means has an outer peripheral edge so that the radial center coincides with the center of the auto position lifter mechanism 13. The upper base member 15 is provided between the lower surface portion 15a of the upper base member 15 and the upper surface portion 16b of the base body 16a of the lower base member 16.

  Therefore, in the automatic height adjusting means of the first embodiment, the weight of the occupant seated on the seat surface 3c of the seat cushion portion 3a of the seat 3 is used as the load on the lower surface side of the seat cushion portion 3a. This is transmitted from the base member 15 in a direction in which the load holding spring 14 is compressed in the vertical direction.

  The movement of the seat cushion portion 3a in the vertical direction stops at a height position where the urging force of the load holding spring 14 and the weight of the occupant seated on the seat surface 3c of the seat cushion portion 3a are balanced. Thus, the height position in the seated state is adjusted.

  That is, the automatic height adjusting means of the first embodiment is provided with the automatic locking means 20.

  The automatic locking means 20 is provided with an elastic arm member 21.

  The elastic arm member 21 has at least a pair of left and right elastically deformable arm portions 21a and 21a, and is fixed to the lower surface portion 15a of the upper base member 15 so that the arm portions 21a and 21a are fixed. , And so as to be moved toward and away from the engaged stepped portions 18 and 18.

  Further, engaging claw portions 21 b and 21 b that engage with the engaged stepped portion 18 are provided on the outer surfaces of the lower end portions of the arm portions 21 a and 21 a of the elastic arm member 21.

  Furthermore, in the first embodiment, an annular lock engagement release bracket member 22 is provided so as to be fitted on the arm portions 21a and 21a and slidable in the vertical direction.

  As shown in FIG. 3 or FIG. 6, when the lock engagement release bracket member 22 is positioned in the vicinity of the upper end portions of the arm portions 21a and 21a of the elastic arm member 21, the inner diameter of the annular portion is reduced. The engagement claw portions 21b and 21b are set to expand to the engagement step portion 18b by the elastic force, and as shown in FIG. 1 or FIG. When the elastic arm member 21 is positioned in the vicinity of the lower end portions of the arm portions 21a and 21a, the engaging claw portions 21b and 21b are close to the engaged step portion 18 by elastic deformation toward the inside. It is set so that the engagement is released.

  In the first embodiment, the lock engagement release bracket member 22 is fixed to the upper end of the support column member 23 erected upward from the substantially central portion of the base body 16a of the lower base member 16, It is supported at a fixed set height position.

  Therefore, as shown in FIG. 3, when the seat cushion portion 3a is lowered and the height direction position reaches the stop position, the arm portions 21a and 21a of the elastic arm member 21 are close to the upper end portions. Since the lock engagement release bracket member 22 is positioned, the arm portions 21a, 21a formed with the engagement claw portions 21b, 21b are expanded by elastic force, and the engagement claw portions 21b, 21b The engaged stage portions 18 and 18 are moved so as to be engaged with each other.

  Further, in the first embodiment, the automatic height adjusting means is provided with an automatic return means.

  The automatic return means unlocks the movement of the seat cushion portion 3a by the automatic lock means after a predetermined time has passed immediately after the occupant leaves the seat 3, so that the height position of the seat cushion portion 3a is reached. Is configured to return to the initial position.

  That is, as shown in FIGS. 2, 5, and 8, the slide pole member 17 in which the engaged stepped portion 18 is formed extends in a height direction from the upper surface portion 16 b of the base body 16 a of the lower base member 16. It is configured to be separated.

  Further, a hollow outer cylinder portion 17a is integrally formed on the lower end portion side of the slide pole member 17 where the engaged stepped portion 18 is formed. A damper member 24 as a buffer means is provided in the outer cylinder portion 17a.

  The damper member 24 is mainly composed of a cylinder portion 24a and a rod portion 24b that protrudes upward from the cylinder portion 24a so as to protrude and retract.

  Among these, the cylinder portion 24a is fixed to the upper surface portion 16b of the base body 16, has a cylindrical shape, and is slidably provided on the inner side surface of the outer cylinder portion 17a, thereby moving the slide pole member 17 up and down. It is configured to be slidably supported in the direction.

  The rod portion 24b has a buffer function that allows the rod portion 24b to expand and contract with a certain resistance from the cylinder portion 24a, and has a rod portion 24b that fixes the rod tip 24c to the outer cylinder portion 17a. It is mainly composed.

  The damper member 24 reduces the speed at which the outer cylinder portion 17a rises in the height direction away from the upper surface portion 16b of the base body 16a of the lower base member 16 by the buffer function, and The outer cylindrical portion 17a is lifted together with the upper base member 15 while the portion 21b is engaged with the engaged stepped portion 18.

  For this reason, in the locked state in which the engaging claw portion 21b is engaged with the engaged stepped portion 18, the load retaining spring 14 is in a no-load state in which an occupant leaves the seat 3. The urging force of the seat cushion portion 3a is configured to be relieved at a rising speed.

  Further, in the unlocked state in which the engagement claw portion 21b is disengaged from the engaged stepped portion 18 after being lifted by a certain distance, the slide pole member 17 is moved from its position shown in FIG. Thus, it is configured to descend to the initial position shown in FIG.

  Next, the operation of the auto position lifter structure of the first embodiment will be described mainly with reference to FIGS.

  In the auto-position lifter mechanism 13 of the first embodiment configured as described above, as shown in FIG. 5, the slidable pole as shown in FIG. 5 is shown when the occupant is not seated on the seat 3 as shown in FIG. The member 17 is lowered by its own weight, and the damper member 24 is in an initial position where it is substantially covered by the outer cylindrical portion 17a of the slide pole member 17.

  Next, when the occupant sits on the seat surface 3c of the seat cushion portion 3a of the seat 3, the load holding spring 14 of the automatic height adjusting means is lowered downward while being compressed downward. Let

  Then, the movement of the seat cushion portion 3a along the vertical direction is stopped at a height at which the weight of the occupant is balanced with the urging force of the load holding spring 14.

  That is, when the elastic arm member 21 provided on the lower side of the seat cushion portion 3a is lowered downward with the lowering of the seat cushion portion 3a, the arm portions 21a and 21a provided on the elastic arm member 21 are also moved. While being slidably contacted with the inner peripheral surface of the lock engagement release bracket member 22 that is externally fitted, as shown by the arrows in FIG.

  As shown in FIG. 6, the engaging claw portions 21b and 21b provided on the outer surfaces of the lower ends of the arm portions 21a and 21a are seated on the urging force of the urging means and the seat cushion portion. At a height position where the weight of the occupant is balanced, the seat cushion portion 3a is automatically locked by being engaged with any one of the engaged step portions 18.

  For this reason, it is not necessary to lock manually and the convenience of use is good.

  Thus, the height position of the seating surface 3c in the seated state is automatically adjusted by the automatic height adjusting means, so that it is possible to perform manual or automatic electric driving operation or the like as in the past. The occupant is simply fixed on the seat cushion portion 3a of the seat 3 and the vertical position is changed and fixed.

  In such a sitting state, the damper member 24 provided in the automatic height adjusting means relaxes the speed at which the seat cushion portion 3a is lifted by the urging force of the load holding spring 14.

  For this reason, for example, even if an operation close to a short-time leaving, such as re-sitting, is performed, there is no possibility that the seat 3 will rise suddenly.

  Therefore, for a while, the locked state in which the engaging claw portions 21 b and 21 b are engaged with any one of the engaged stepped portions 18 is maintained. Therefore, there is no possibility that the vertical position of the engaged stepped portion 18 with which the engaging claw portions 21b and 21b are engaged is unintentionally changed due to vehicle vibration or the like.

  Further, when the user sits down intentionally and further lowers the position of the seating surface 3c, the engagement of the engagement claws 21b and 21b is maintained, so that the position can be efficiently and further lowered. The engagement of the engagement claw portions 21b and 21b with the engaged stepped portion 18 can be changed.

  When the occupant completely leaves the seat 3, the seat 3 rises together with the elastic arm member 21 by the urging force of the load holding spring 14.

  At this time, since the engaging claw portions 21b and 21b are respectively engaged with the engaged step portions 18 and 18, as shown by the upward arrow in FIG. , 17 rises.

  As shown in FIG. 8, the damper member 24 in the outer cylinder portion 17 a is configured such that the rod portion 24 b is extended upward from the cylinder portion 24 a with a certain resistance so By leaving the seat, there is no possibility that the seat will rise suddenly even in a no-load state.

  During the ascent, the arm portions 21a, 21a provided on the elastic arm member 21 are slidably contacted with the inner peripheral surface of the lock engagement release bracket member 22 that is externally fitted. By being pressed inward and elastically deformed, as shown by the arrows in FIG. 7, by approaching from the left and right directions toward the center, a certain height as shown in FIG. 9. Thus, the engagement of the engaging claws 21b, 21b with the engaged stepped portions 18, 18 is released.

  Then, the slide pole member 17 having the engaged stepped portion 18 disengaged by the engaging claw portion 21b is lowered by its own weight in the direction indicated by the downward arrow in FIG. Will be restored.

  In this way, since the damper member 24 can earn a certain time until the certain height is reached, the movement of the seat cushion portion 3a by the elastic arm member 21 is locked from the occupant. Is released after a predetermined time from immediately after leaving.

  For this reason, since a certain amount of time can be earned until the height position of the seat cushion portion 3a returns to the initial position from the occupant's seating, when the occupant re-sits, the locked state is maintained, The seat 3 can also be lowered, and the convenience of use is better than when the seat 3 is adjusted again from the initial position.

  The load holding spring 14 is interposed between a lower surface portion 15 a of the upper base member 15 provided on the lower surface side of the seat cushion portion 3 a and an upper surface portion 16 b of the lower base member 16.

  For this reason, the vertical sliding movement direction of the seat portion 3a along the slide pole members 17 and 17 inserted through the upper base member 15 and the direction in which the urging force of the load holding spring 14 acts are set. Therefore, the urging force can be efficiently applied to the seat cushion portion 3a via the upper base member 15.

  In addition, since the slide movement direction of the seat portion 3a can be set only in the vertical direction, for example, the seat cushion portion 3a moves in the front and rear directions along with the vertical movement as in the prior art. Therefore, the height adjustment in the vertical direction can be efficiently performed as compared with the case where the angle is inclined.

  In the first embodiment, the upper position of the seat cushion portion 3a with respect to the engaged step portion 18 formed on the slide pole member 17 in a state in which the seat cushion portion 3a reaches the stop position. The engaging claw portions 21b and 21b of the elastic arm member 21 provided on the lower surface portion 15a of the base member 15 face outward while the pressing by the lock engagement releasing bracket member 22 is released. The arm portions 21a and 21a formed with 21b and 21b are moved together with the elastic deformation and engaged with any one of the engaged step portions 18 and 18.

  When the arm portions 21a and 21a are further moved downward by the weight of the occupant, the engaging claw portions 21b and 21b get over the stepped portions of the engaged stepped portions 18 and 18, and the next lower It is engaged with the step on the side and stops at a position where the weight of the passenger and the urging force of the load holding spring 14 are balanced.

  For this reason, since the movement of the seat cushion portion 3a is automatically locked, the height position of the seat cushion portion 3a is fixed and a stable seating posture can be obtained in the occupant seated state.

  Further, it is not necessary to perform manual locking, and the convenience of use is good.

  Further, when the seat cushion portion 3a is raised by the lock engagement release bracket member 22, the engagement of the engagement claw portions 21b and 21b with the engaged step portions 18 and 18 is released. .

  When the occupant leaves the seat and the occupant's weight is no longer applied to the seat cushion portion 3 a, the seat cushion portion 3 a is raised by the urging force of the load holding spring 14.

  At this time, the elastic arm member 21 is elastically deformed by the lock engagement release bracket member 22 and the engagement of the engagement claw portions 21b and 21b with the engaged step portions 18 and 18 is released.

  Therefore, the seat cushion portion 3a can be further raised and returned to the initial position. As described above, in the auto position lifter mechanism 13 according to the first embodiment, it is not necessary to use drive means such as an electric motor or a hydraulic drive mechanism, and the number of parts can be reduced to suppress weight reduction and increase in manufacturing cost.

  Further, the outer cylinder portions 17a and 17a are lifted in the separating direction together with the upper base member 15 while the engaging claws 21b and 21b are engaged with the engaged step portions 18 and 18. Then, the rising speed is alleviated by the damper member 24 provided in the outer cylindrical portion 17a of the slide pole member 17.

  Since this damper member 24 is covered by the outer cylindrical portion 17a of the slide pole member 17, the appearance quality is good, and a separate mounting place is not required, and the space efficiency is also good.

  And in this Example 1, in addition to the space which permits the movement of this operation lever like the case where the said conventional rotation operation dial member 10 grade | etc., Is comprised with the said conventional operation lever etc., movement of a hand is carried out. There is no need to provide a space that allows the operation in consideration.

  For this reason, the freedom degree of setting of space, such as between the interior member 11 in the said compartment 2 and the side surface 4a of the said base bracket member 4 as shown in FIG. 21, for example improves.

  10 to 18 show Example 2 of the embodiment of the present invention.

  In the auto position lifter mechanism 113 according to the second embodiment, as shown in FIGS. 13 and 15, the difference between the height of the floor panel 12 from the upper surface to the lower surface of the seat cushion portion 3a and the shortening thereof is the difference. Instead of the support column member 23 of the first embodiment, one of the cushioning members is used so that the stroke (h3-h4) is larger than the stroke (h1-h2) of the first embodiment shown in FIGS. An extension damper member 123 as one is provided.

  The extension damper member 123 is mainly constituted by a cylinder portion 123a fixed to the approximate center of the base body 16a of the lower base member 16 and a rod portion 123b for fixing the rod tip 123c to the center of the lock engagement release bracket member 22. It is configured.

  In the auto position lifter mechanism 113 according to the second embodiment, the upper base member 115 provided on the lower surface side of the seat cushion portion 3a has a slide formed longer than the slide guide groove portions 115b and 115b according to the first embodiment. Guide groove portions 115b and 115b are provided.

  In the slide guide grooves 115b and 115b, slide pole members 117 and 117 formed vertically longer than the slide pole members 17 and 17 of the first embodiment are slidably inserted from below.

  Further, the automatic locking means is provided with an elastic arm member 121 having a pair of left and right elastically deformable arms 121a, 121a set longer than the elastic arm member 21 of the first embodiment, and the upper base By fixing to the lower surface portion 15 a of the member 115, these arm portions 121 a and 21 a are provided so as to approach and separate toward the engaged stepped portions 18 and 18.

  Engaging claw portions 21b and 21b that engage with the engaged stepped portions 18 and 18 are provided on the outer surfaces of the lower ends of the arm portions 121a and 121a of the elastic arm member 121, respectively.

  Further, in this second embodiment, the outer surfaces of the arm portions 121a and 121a, where the damping force of the extension damper member 123 is the force used for the operation of the lock engagement release bracket 22, are used as the lock engagement release bracket. The inner peripheral surface of the member 22 is set so as to be smaller than the force that slides while sliding.

  The damping force of the extension damper member 123 is set to be weaker than the damping force of the damper member 24 in the outer cylinder portion 17a of the slide pole member 117 shown in FIG.

  Next, the operation of the auto position lifter structure of the second embodiment will be described with reference to FIGS.

  In the auto-position lifter mechanism 113 described in the second embodiment configured as described above, the occupant as shown in FIGS. 13 and 14 is shown in FIG. 15 from the initial position in the unloaded state where the occupant is not seated on the seat 3. As described above, when a load is applied to the seat cushion portion 3a by the occupant sitting, the seat 3 is lowered while the load holding spring 14 of the automatic height adjusting means is compressed downward.

  Then, the movement of the seat cushion portion 3a along the vertical direction is stopped at a height at which the weight of the occupant is balanced with the urging force of the load holding spring 14.

  That is, when the elastic arm member 121 provided on the lower side of the seat cushion portion 3a is lowered with the lowering of the seat cushion portion 3a, the arm portions 121a and 21a provided on the elastic arm member 121 are also As shown in FIG. 15, it is expanded in the left-right direction while being slidably contacted with the inner peripheral surface of the lock engagement release bracket member 22 that is externally fitted.

  Then, as shown in FIG. 6, the engaging claw portions 21b and 21b provided on the outer surfaces of the lower ends of the arm portions 121a and 121a are seated on the seat cushion portion and the urging force by the urging means. At a height position where the weight of the occupant is balanced, the seat cushion portion 3a is automatically locked by being engaged with any one of the engaged step portions 18.

  For this reason, it is not necessary to lock manually and the convenience of use is good.

  Thus, the height position of the seating surface 3c in the seated state is automatically adjusted by the automatic height adjusting means, so that it is possible to perform manual or automatic electric driving operation or the like as in the past. The occupant is simply fixed on the seat cushion portion 3a of the seat 3 and the vertical position is changed and fixed.

  In such a sitting state, the damper member 24 and the inflammatory damper member 123 provided in the automatic height adjusting means alleviate the speed at which the seat cushion portion 3a is lifted by the urging force of the load holding spring 14. To do.

  For this reason, for example, even if an operation close to a short-time leaving, such as re-sitting, is performed, there is no possibility that the seat 3 will rise suddenly.

  When the occupant completely leaves the seat 3, the seat 3 rises together with the elastic arm member 121 by the urging force of the load holding spring 14.

  At this time, since the engaging claw portions 21b and 21b are respectively engaged with the engaged step portions 18 and 18, the slide pole members 117 and 117 together with the seat cushion 3a as shown in FIG. However, it rises.

  At this time, as shown in FIG. 17, the damper member 24 in the outer cylinder portion 17a has the rod portion 24b extended upward from the cylinder portion 24a with a certain resistance, so that the seat Even if the occupant leaves the seat 3 and no load is applied, there is no risk of the seat rising suddenly.

  Furthermore, in the second embodiment, the sudden increase is alleviated by the extension damper member 123.

  During the ascent, the arm portions 121a and 121a provided on the elastic arm member 121 are slidably contacted with the inner peripheral surface of the externally engaged lock engagement release bracket member 22, and the lock engagement release bracket member 22 It is pressed inward and elastically deformed.

  At this time, the damping force of the extension damper member 123 is smaller than the force of sliding the outer surfaces of the arm portions 121a and 121a while the inner peripheral surface of the lock engagement release bracket member 22 slides. Is set.

  For this reason, first, the extension damper member 123 expands, and then the lock engagement release bracket member 22 slides and presses the arm portions 121a and 121a inward, and elastically Deform.

  As shown in FIG. 18, due to the elastic deformation of the arm portions 121a and 121a, the engagement claw portions 21b and 21b are covered at a certain height by approaching from the left and right directions toward the center portion. The engagement with the engagement step portions 18 and 18 is released.

  Then, the slide pole member 17 having the engaged stepped portion 18 released from the engagement by the engaging claw portion 21b is lowered by its own weight in the direction indicated by the downward arrow in FIG. Will be restored.

  As described above, since the damper member 24 and the extension damper member 124 can earn a certain time until the certain height is reached, the elastic arm member 21 locks the movement of the seat cushion portion 3a. The seat is released after a predetermined time has passed immediately after the occupant leaves the seat.

  For this reason, since a certain amount of time can be earned until the height position of the seat cushion portion 3a returns to the initial position from the occupant's seating, when the occupant re-sits, the locked state is maintained, The seat 3 can also be lowered, and the convenience of use is better than when the seat 3 is adjusted again from the initial position.

  In particular, in the second embodiment, the extension damper member 123 is extended, and the lock release position by the lock engagement release bracket member 22 can be shifted upward.

  For this reason, as shown in FIG. 16, the engaging claw portions 21b and 21b are engaged with the engaged stepped portions 18 and 18, and the extension damper member 123 is moved while the locked state is maintained. Since it can be extended for a longer time, it is possible to easily set the timing of the unlocking position, and to increase the amount of vertical movement of the seat cushion portion 3a in the locked state. The degree of freedom of setting can be improved, and the adjustment range can be increased.

  Further, by setting so that the extension allowance of the extension damper member 123 remains even after the lock is released, the rising speed of the seat cushion portion 3a is reduced by the buffering force of the extension damper member 123. .

  For this reason, it is possible to set a large buffering force in the vicinity of the upward movement end, which is the initial position of the seat cushion portion 3a, and even in a range where the buffering action of the damper member 24 does not reach by releasing the locked state, By providing a buffering action, it is possible to suppress the occurrence of a hitting sound or the like at the end of movement.

  Furthermore, in the second embodiment, the damping force of the extension damper member 123 is set to be weaker than the damping force of the damper member 24 in the outer cylinder portion 17a of the slide pole member 117 shown in FIG. .

  For this reason, first, when the occupant leaves the seat cushion part 3a, the damper member 24 and the extension damper member 124 in the outer cylinder part 17a are extended while the locked state is maintained. The rising speed is reduced by the damping force of the damper member 24 and the extension damper member 123 in the outer cylinder portion 17a.

  Even after the lock is released, the rising speed of the seat cushion portion 3a is alleviated by the buffering force of the extension damper member 123.

  Therefore, in each stage for returning to the initial state, the ascending speed of the seat 3 can be controlled by adjusting the damping force of each damper member 24 and the extension damper member 123, and the setting suitable for the use mode can be easily performed. Yes.

  Other configurations and operational effects are the same as or equivalent to those of the first embodiment, and thus the description thereof is omitted.

  The auto-position lifter structure according to the first and second embodiments of the present invention has been described in detail with reference to the drawings with reference to the drawings. However, the specific configuration is not limited to this embodiment. Design changes that do not depart from the gist of the present invention are included in the present invention.

  For example, in the second embodiment, the shock absorbing means has been described using the extension damper member 123 and the damper member 24 provided in the outer cylindrical portion 17a. In addition, the extension damper member 123 alone may be used as the buffer means.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing along the vehicle front-back direction which shows the auto position lifter structure of Example 1 of the best embodiment of this invention, and demonstrates the structure of the principal part. FIG. 2 is an enlarged side view of an A part in FIG. 1, showing the auto position lifter structure of Example 1. FIG. 2 is a cross-sectional view along the vehicle front-rear direction at a seat position corresponding to a seating state for explaining the configuration of the main part in the auto position lifter structure of the first embodiment. It is sectional drawing along the vehicle front-back direction of the auto position lifter mechanism in the no-load state which demonstrates an effect | action with the auto position lifter structure of Example 1. FIG. FIG. 5 is an enlarged side view of a portion B in FIG. 4, showing the auto position lifter structure of Embodiment 1. FIG. 5 is a cross-sectional view of the auto position lifter mechanism along the vehicle front-rear direction in a state where the operation is performed in the auto position lifter structure according to the first embodiment and a passenger is seated and a load is applied. FIG. 3 is a cross-sectional view of the auto position lifter mechanism in the vehicle front-rear direction immediately after the occupant leaves the seat, explaining the operation of the auto position lifter structure according to the first embodiment. FIG. 8 is an enlarged side view of a C part in FIG. 7, showing the auto position lifter structure of Example 1. It is sectional drawing along the vehicle front-back direction of the auto position lifter mechanism explaining a mode that the locked state was cancelled | released by the auto position lifter structure of Example 1. FIG. It is sectional drawing along the vehicle front-back direction which shows the auto position lifter structure of Example 2 of the best embodiment of this invention, and demonstrates the structure of the principal part. FIG. 5 is an enlarged side view illustrating a configuration of a damper member in an outer cylinder portion, showing an auto position lifter structure of Embodiment 2. FIG. 6 is a cross-sectional view along the vehicle front-rear direction at a seat position corresponding to a seating state for explaining a configuration of a main part in the auto position lifter structure of the second embodiment. It is sectional drawing along the vehicle front-back direction of the auto-position lifter mechanism in the no-load state explaining the effect | action with the auto-position lifter structure of Example 2. FIG. FIG. 14 is an enlarged side view of a D part in FIG. 13, showing the auto position lifter structure of Example 2. FIG. 5 is a cross-sectional view of the auto position lifter mechanism along the vehicle front-rear direction in a state in which the operation is performed in the auto position lifter structure of Embodiment 2 in a state where a passenger is seated and a load is applied. FIG. 6 is a cross-sectional view of the auto position lifter mechanism in the vehicle front-rear direction immediately after the occupant leaves the seat, explaining the operation of the auto position lifter structure according to the second embodiment. FIG. 17 is an enlarged side view of an E part in FIG. 16, showing the auto position lifter structure of Example 2. It is sectional drawing along the vehicle front-back direction of the auto position lifter mechanism explaining a mode that the locked state is cancelled | released and it tries to return to an initial state by the auto position lifter structure of Example 2. FIG. It is a side view explaining the structure of the seat which has an up-and-down position adjustment mechanism of a prior art example, and a mode that the seat cushion part fell. It is a side view explaining the structure of the seat which has an up-and-down position adjustment mechanism of a prior art example, and a mode that the seat cushion part raised. It is the front view which demonstrated the structure of the seat which has an up-and-down position adjustment mechanism of a prior art example, and was seen from the F arrow direction in FIG.

Explanation of symbols

2 Car compartment 3 Seat 3a Seat cushion part 12 Floor panel 13, 113 Auto position lifter mechanism 14 Load holding spring (biasing means)
DESCRIPTION OF SYMBOLS 15,115 Upper base member 15a Lower surface part 16 Lower base member 16b Upper surface part 17,117 Slide pole member 17a Outer cylinder part automatic locking means 18 Engagement part 21,121 Elastic arm member 21b, 21b Engagement claw part 22 Lock engagement Release bracket member cushioning means 24 (inside the outer cylinder) damper member 123 extension damper member

Claims (11)

  Seated between a seat cushion portion of a seat placed on a floor panel in a passenger compartment and the floor panel so that the seat cushion portion can be moved in the vertical direction and is seated at a stop position. An automatic position lifter structure that changes according to the occupant to perform, an urging means for urging the seat cushion part in a direction away from the floor panel, an urging force by the urging means, and the seat cushion part An automatic height adjusting means for adjusting the height position in the seated state by stopping the movement of the seat cushion portion along the vertical direction at a height position where the weight of the passenger seated on the seat is balanced. Auto position lifter structure.   The automatic height adjusting means includes an automatic lock that automatically locks the movement of the seat cushion portion at a height position where the urging force of the urging means and the weight of the occupant seated on the seat cushion portion are balanced. 2. The auto position lifter structure according to claim 1, further comprising means.   The automatic height adjusting means includes a buffering means for relaxing the rising speed of the seat cushion portion by an urging force of the urging means in a no-load state in which an occupant leaves the seat. The auto-position lifter structure according to claim 1 or 2.   The automatic height adjusting means is configured to release the lock of the movement of the seat cushion portion by the automatic locking means after a predetermined time has passed immediately after the occupant leaves the seat, so that the height position of the seat cushion portion The automatic position lifter structure according to any one of claims 1 to 3, further comprising automatic return means for returning the position to an initial position.   In the automatic height adjusting means, a slide pole member protruding upward from a lower base member fixed to the floor panel is slidable on an upper base member provided on the lower surface side of the seat cushion portion. 2. The insertion device according to claim 1, wherein the biasing means is provided around the slide pole member between the lower surface portion of the upper base member and the upper surface portion of the lower base member. 5. The auto position lifter structure according to any one of 4 to 4.   The slide pole member is formed with an engaged step portion of the automatic locking means, and the lower surface portion of the upper base member is provided with an engaging claw portion that engages with the engaged step portion, The engagement claw portion includes a lock engagement release bracket member that moves to engage with the engaged stepped portion when the height direction position of the seat cushion portion reaches the stop position. The auto-position lifter structure according to claim 5.   The lock engagement release bracket member is configured to release the engagement of the engagement claw portion with the engaged step portion when the seat cushion portion is raised. The auto position lifter structure according to claim 6.   The outer cylindrical portion of the slide pole member in which the engaged step portion is formed is configured to be separable in the height direction from the upper surface portion of the lower base member, and the damper member of the buffer means is disposed in the outer cylindrical portion. The cylinder member of the damper member is fixed to the upper surface portion, and the rod tip of the damper member is fixed to the outer cylinder portion, so that the speed of rising in the separation direction is reduced and the engagement is performed. The auto position according to claim 6 or 7, wherein the claw portion is configured to raise the outer cylinder portion together with the upper base member while being engaged with the engaged stepped portion. Lifter structure.   The lock engagement release bracket is provided on an upper surface portion of the lower base member, and is connected to an extension damper member that can expand and contract in a height direction. Auto-position lifter structure as described in the section.   The auto position lifter structure according to claim 9, wherein a damping force of the extension damper member is set smaller than a force used for operating the lock engagement release bracket. The auto position lifter structure according to claim 9 or 10, wherein a damping force of the extension damper member is set to be weaker than a damping force of the damper member in the outer cylinder portion.

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