JP2007168779A - Slide member for automobile seat, automobile seat having the slide member, and automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slide member for an automobile seat which does not adversely affect the normal operation of the slide member while increasing the degree of the motion of a movable part with respect to a fixed part at an impact, and a automobile seat having the slide member. <P>SOLUTION: The slide member (4) has a first profile part (6) and a second profile part (12). A lock member (17) mounted at the first profile part can be moved from a lock position to a safe position for hindering the movement of the lock member (17) in the crossing direction with respect to the second profile part (12) in the sliding direction with respect to the first profile part (6). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a slide member for an automobile seat, a vehicle seat provided with the slide member, and an automobile.

More particularly, the present invention particularly relates to an automobile seat slide member having a first profile part and a second profile part, wherein one of the first profile part and the second profile part is attached to the automobile chassis, and the other is The first profile part is attached to slide along the sliding direction with respect to the second profile part.
The slide member further includes a lock member attached to the first profile portion, and the lock member has first and second profiles in a transverse direction different from the sliding direction with respect to the first profile portion. A locking position that engages both of the parts and prevents relative movement along the sliding direction of the first and second profile parts and does not engage the second profile part. The present invention relates to a slide member for an automobile seat that can be moved between unlocking positions that enable smooth movement.

  Such a lock member is used to adjust the seat position in the passenger space, and is normally in the lock position upon impact. When the locking member is in the locked position, it holds the seat position in the passenger space and works so that the passenger is not thrown forward (rearward depending on the direction of impact) with the seat. However, if this holding becomes too rough, there is a possibility that the occupant may be injured by being held roughly, for example. Alternatively, the slide member may eventually break due to the impact, and the passenger can no longer be held, and the passenger may be injured.

  In order to alleviate these problems, Patent Document 1 discloses that the movable profile portion can move slightly with respect to the fixed profile portion when there is an impact. This movement occurs only when there is an impact. When sufficient energy is applied to the slide member, local deformation is induced in the slide member, and the energy is dissipated.

Although it is a very satisfactory embodiment, it can be further improved. In particular, Japanese Patent Application Laid-Open No. H10-228688 discloses a device that causes this deformation locally to have an action of guiding the lock member. The lock member needs a predetermined play according to the relative degree of movement of the first and second profile portions. This play needs to be minimal as long as sufficient lock can be maintained.
French Patent No. 2732279

  The main object of the present invention is not to adversely affect the normal operation of the slide member while increasing the degree of movement of the movable part relative to the fixed part at the time of impact.

  To this end, according to the present invention, in the slide member of the problem type, the lock member is attached to the first profile portion so as to be movable in the sliding direction from the lock position to the safe position, Movement in the transverse direction with respect to the profile portion is prevented.

  With this configuration, the occupant is extremely well fixed when an impact occurs.

In preferable embodiment of this invention, you may have one or more of the following structures further.
The slide member includes a holding mechanism that prevents relative movement of the lock member and the first profile portion in the sliding direction during normal operation of the slide member and enables relative movement in the event of an impact. .
The holding mechanism of the lock member is adapted to guide the lock member so as to move in the transverse direction with respect to the first profile portion. When an impact occurs, the energy of the impact is dissipated by the holding mechanism. The locking member can be moved in the sliding direction with respect to the first profile portion.
The holding mechanism includes a groove formed in the movable profile portion and a fastener portion formed in the lock member. The fastener portion slides in the transverse direction of the groove, and when an impact occurs, The fastener portion is attached to the first profile portion so that relative movement in the sliding direction between the first profile portion and the second profile portion and the locking member fixedly attached to each other is possible. Installed independently.
The fastener portion has a fragile portion that prevents relative movement in the sliding direction between the lock member and the first profile portion, and the fragile portion is broken when an impact occurs on the automobile. It has become.
The holding mechanism has a deforming portion formed on the first profile portion and a contact portion, and the holding mechanism deforms the deforming portion by moving in the sliding portion to the contact portion in the sliding direction. And an auxiliary member for complementing.
The lock member engages with the auxiliary member to hold the auxiliary member, and until the auxiliary member reaches the contact portion at the safe position of the lock member during relative movement of the lock member and the first profile portion in the sliding direction. The first profile part is restrained.
The deformation part has at least one groove formed in the first profile part, and the auxiliary member has at least one pin inserted into the groove of the first profile part and in contact with the lock member.
The holding mechanism is symmetrical with respect to the lock member and prevents relative movement of the lock member and the first profile portion in the sliding direction and in the direction opposite to the sliding direction.
The first profile portion includes a first flange and a second flange that are parallel to the sliding direction, the first flange includes the lock member and the holding mechanism, and the second flange includes the first flange. The locking member and the holding mechanism are the same as the locking member and the holding mechanism.
The first profile portion has a portion having at least one contact portion surface and at least one opening spaced apart from the contact portion surface along the sliding direction. The opening portion is in a locked position. The lock member is attached to the first profile portion so as to be fitted into the opening when moving in the transverse direction from the lock position to the lock release position.
The locking member is slid in the sliding direction with respect to the first profile portion, and the locking member no longer faces the opening portion but faces the contact portion surface to prevent the locking member from moving in the transverse direction with respect to the first profile portion To a safe position.

  According to another aspect of the present invention, the present invention relates to a vehicle seat including a vehicle seat member such as a slide member for receiving an occupant, wherein the vehicle seat member is attached to a first profile portion.

  The features and advantages of the present invention will become apparent with reference to the following description of non-limiting embodiments and the accompanying drawings.

  In the following drawings, similar or similar components are denoted by the same reference numerals.

  FIG. 1 is a view showing an automobile seat 1 having a cushion 2 for receiving an occupant and a backrest 3. One of the members constituting these seats, for example, the cushion 2 in FIG. 1, is connected to the automobile chassis via a slide member 4 attached to the floor 5 of the automobile, for example.

  The slide member 4 may be configured such that the position of the seat 1 relative to the floor 5 of the automobile can be adjusted along the longitudinal direction x by moving the seat 1 forward or backward in the direction x, for example. Here, “front” and “rear” mean relative movement of the seat 1 and the floor 5 regardless of the arrangement of the seat 1 of the automobile.

  An example of the slide member 4 attached to the seat 1 is shown in FIG. The slide member 4 includes a first profile portion and a second profile portion. In the exemplary embodiment shown here, the movable profile portion 6 is attached to a moving seat member (cushion 2). Here, the movable profile portion extends in parallel with the sliding direction X, is separated by the base portion 8 at the upper portion, and, at the bottom portion, for example, a protruding portion 9a formed by the respective stamping portions of the flanges 7a and 7b, 9b is a male profile having a first flange 7a and a second flange 7b joined together by 9b. The protrusions 9a and 9b may be joined to each other by welding, for example, to form a rigid box-shaped movable profile portion. Alternatively, it may be formed as shown in the cross section of FIG. 2 or may be formed as shown in another suitable location along the movable profile portion 6.

  The flanges 7a and 7b have expansion portions 10a and 10b that extend outward and upward from the bottom ends of the flanges 7a and 7b, respectively. These extensions have a series of openings 11a, 11b at their bottoms that are spaced apart by the abutment surface for the lock member 17.

  The movable profile portion 6 corresponds to, for example, a fixed profile portion 12 attached to the floor 5 of the automobile. In the example shown here, the fixed profile portion 12 is a female profile portion on which the movable profile portion 6 slides. The fixed profile portion 12 includes a horizontal base portion 13 on either side of two vertical flange portions 14a and 14b extending in the upward direction. These flange portions are indented shapes facing inward and downward, respectively. Pan portions 15a and 15b. As shown in FIG. 2, in the assembled state of the slide member, the extended portion 10a of the movable profile portion is fitted between the flange portion 14a of the fixed profile portion and the recessed pan portion 15a. Two ball tracks are inserted into which ball bearings are inserted to assist the sliding movement of the movable profile portion 6 relative to the fixed profile portion 12. The other configuration is the same, and the extended portion 10b is also fitted between the vertical flange portion 14a of the fixed profile portion and the recessed pan portion 15b.

  An example of the lock system in the case of the slide member shown in FIG. 2 will be described. In this exemplary embodiment, the movable profile portion 6 can be engaged with the fixed profile portion 12 at the lock position of the lock member shown in FIG. 2 to lock the slide member. Function. Alternatively, the lock member may be configured not to engage with the fixed profile portion at the unlock position of the lock member (FIG. 5). In this unlocked position, the seat 1 can move in the sliding direction with respect to the floor 5. However, according to the present invention, the fixed profile portion 12 may constitute a profile portion that receives the lock member 17.

  In the illustrated example, the lock member 17 is a sheet metal plate that extends substantially parallel to the movable profile portion. As can be seen mainly from FIG. 3, the locking member 17 engages the upper part 18 forming the hook and the corresponding toothed part 21 (see FIG. 2) of the fixed profile part in the locking position of the locking system. And a bottom portion 19 having a plurality of teeth 20 formed in such a manner.

  The slide member includes a holding mechanism that holds the lock member in the movable profile portion and guides the movable profile portion when the movable profile portion moves between the lock position and the unlock position. For this reason, the locking member 17 has a fastener portion 22 formed on the rear surface of the locking member opposite to the surface of the locking member 17 having both the upper portion 18 and the teeth 20 formed on the flanges 7a and 7b of the movable profile portion. It is attached by. The fastener portion 22 freely slides in the transverse direction along the groove 23 to move the movable profile portion between the lock position (FIG. 2) where the fastener portion 22 is located in the upper region of the guide groove 23 and the fastener portion 22. Guided between the unlocked positions (FIG. 5) located in the bottom region of the groove 23.

  Furthermore, when sufficient energy is applied to the lock member, the lock member may be separated from the receiver side portion by damaging the fragile portion between the fastener portion 22 and the sheet metal plate. The weakened portion is formed by an appropriate method such as locally thinning between the sheet metal plate and the fastener portion, for example.

  The locking member 17 interferes with the spring 24 at the top forming the hook 18. The spring 24 is attached, for example, above and below the lock member 17 on the movable profile portion (FIG. 3). The spring 24 forces the locking member 17 upward so that the teeth 20 of the locking member 17 engage with the teeth 21 of the fixed profile portion in the locked position.

  An outline of an example of the unlock control device 25 is also shown in FIG. The unlock control device 25 may have, for example, a rotating shaft 26 that can be operated in a conventional manner by a seat occupant across the receiver side portion. The lock release control device 25 may also include a cam 27 that is rotatably attached to the receiver side portion and fixedly attached to the shaft 26. The cam 27 has an operating portion 27 a located opposite to the upper portion 18 that forms the hook of the lock member 17.

  In a typical embodiment, the holding mechanism includes a deformed portion 29 including a groove portion extending in the longitudinal direction on the flanges 7a and 8b of the movable portion, a diameter slightly larger than the thickness of the groove 29, and from one flange to the other. You may provide the pin 30 extended | stretched to a flange. For example, the pin 30 is disposed at one end of the groove 29 in contact with or close to the side wall of the lock member 17 to guide the sliding of the lock member in the transverse direction.

  As shown in FIG. 3, the holding mechanism 28 may be disposed in front of the lock member 17, behind the lock member 17, or both in front of and behind the lock member 17.

  The lock mechanism configured as described above operates as follows. A locking mechanism in which the locking member 17 shown in FIG. 2 interferes with the movable profile portion 6 by the fastener portion 22 and the fixed profile portion by the teeth 20 engaged with the tooth-like portion 21 of the fixed profile portion. First, the user moves the fastener portion 22 in the guide groove 23 formed in the movable profile portion to unlock the slide member. To do this, the user rotates the cam 27 around the shaft 26 and moves the lock member 17 downward to the cam actuating portion 27 against the force of the spring 24. In this way, the lock member 17 moves to its unlocked position, and the fastener portion 22 is guided along the groove 23 and moved downward, whereby the tooth 20 is released from the tooth-like portion 21 and locked. The bottom of the member is fitted into openings 11a, 11b formed in the movable profile portion for this purpose. As a result, the teeth 20 of the locking member are disengaged from the tooth-like portions 21 of the fixed profile portion, and the movable profile portion 6 is not fixed to the fixed profile portion 12. The user may then move the movable profile portion relative to the fixed profile portion, for example, when adjusting the position of the longitudinal seat relative to the car floor. Further, the user who has adjusted to the new position can return the lock member 17 to the lock position by the action of the spring 24 when the control device 25 is released. In order for the lock member 17 to move together with the movable profile portion, it is sufficient that the number of openings 11 a or 11 b formed in the movable profile portion 17 matches the number of teeth 20. On the other hand, since the fixed profile part has many teeth in its tooth-like part 21, many adjustment positions can be obtained.

  Or, for example, in a three-door car, when the seat is moved forward to create a space behind the seat, for example, when unlocking is performed, the user needs to re-lock the slide member to another position. There is no.

  In the case described above, this locking mechanism is either the single locking member 17 supported by any one of the flanges 7a and 7b on the receiver side portion, or the flanges 7a and 7b on the receiver side portion as shown in the figure. Two similar locking members, each supported by one, can be provided.

  When an impact larger than the predetermined energy indicated by the arrow C in FIG. 6 occurs, the holding mechanism dissipates a part of the impact. For example, the fastener 22 of the lock member 17 on the movable profile portion 6 is adjusted so as to break. Since such an impact usually occurs when the slide member is locked, the lock member 17 engaged with the tooth-like portion 21 (not shown in FIG. 6) of the fixed profile portion by the tooth 20 It remains fixed to the fixed profile part. On the other hand, the movable part 6 that is no longer locked to the fixed part tries to move in the direction indicated by the arrow C in FIG. 6 in response to the impact. During this movement, the pin 30 of the holding mechanism 28 located on the left side of the locking member in FIGS. 3 and 6 slides in a longitudinal groove 29 formed in the movable profile portion for this purpose. 29 is deformed, and a part of the energy applied to the slide member by the impact C is locally dissipated. For this reason, the seat 1 can move over a wide range compared to the direction of the impact with respect to the automobile chassis at the time of impact, and the energy of the slide member is locally dissipated, so that the impact on the occupant of the impact is attenuated. can do.

  While the pin 30 slides in the groove 29 and comes into contact with the safe position shown in FIG. 6, first, the lock member is separated from the receiver side portion 6, and secondly, by the lock member 17 and the movable portion 6. The slide member can no longer be unlocked due to an offset from the supported control device 25 and also from the corresponding opening 11b of the locking member teeth 20 and the movable part. No matter what downward pressure is applied to the lock member at the time of impact, the lock member no longer faces the opening 11a, so that the lock member comes into contact with the contact portion of the movable profile portion. As a result, the contact portion of the movable profile portion is further held at the safe position, so that the relative movement of the fixed profile portion and the lock member is avoided, and the safety of the occupant is maintained.

  Since the holding mechanism 28 is symmetrical with respect to the lock member 17, the same effect can be obtained for both the impact from the “front” and the impact from the “rear” on the slide member.

  As shown in FIG. 7, in order to facilitate locking the slide member in the locked position, for example, to enable locking by shearing action, in one embodiment, as shown in FIGS. In addition, two lock members 17 are provided. In one exemplary embodiment, the tooth-like portion 21 of the bread portion 15a and the tooth-like portion 21 of the bread portion 15b are arranged in the same manner, and the concave portion for each tooth-like portion has a slide member. The width is wider than the corresponding tooth of the locking member 17 fitted for locking. Furthermore, a slight offset is provided in the lock members 17 supported by the first flange 7a and the second flange 7b, respectively, and the teeth 20 of the lock member 17 of the flange 7a are in the pan portion 15a at the lock position shown in FIG. The teeth 20 of the lock member 17 supported by the flange 7b are engaged with a portion of the pan portion 15b facing the rear of the tooth portion 21 while engaging with a portion of the tooth portion 21 facing the front surface of the recess. I try to match.

  In this system, when the lock is applied from the unlock position, when the user releases the control unit 26, at least one of the two lock members 17 comes close to the toothed portion 21 to be fitted, and the movable profile portion 6 is subsequently moved. While moving in the sliding direction, the teeth 20 of the other locking members face the corresponding toothed portions 21 of the fixed profile portion and are fitted into the toothed portions 21 by the action of the springs 24. Lock position.

  As an alternative method, the two locking members 17 may be at the same level, and an offset is provided along the sliding direction X in the tooth-like portion 21 on the other side of the fixed profile portion.

  When the lock member 17 and the tooth-like portion 21 are provided in a predetermined arrangement, any one of the lock members 17 has a corresponding tooth-like shape of the fixed profile portion at each position where control can be released by the user. The position which can engage with the part 21 is taken.

  In the illustrated embodiment, the retention mechanism has both a brittle fastener 22 system in the groove 23 and a pin 30 system in the groove 29.

  Note that in alternative embodiments, the groove 29 need not be smaller in diameter than the pin 30. In this case, energy dissipation is realized only by the separation (breakage) of the fasteners 22.

  In another variant, the use of the fastener part 22 is not essential. The lock member is guided by the pin 30 in contact with the pin 30. In this modification, the energy to be dissipated is generated by the pin 30 having a diameter larger than that of the groove 29.

  In the illustrated embodiment, the lock member 17 moves relative to the movable profile portion in parallel with the sliding direction. However, in a variant embodiment, it is sufficient for the locking member 17 to move with at least a non-zero member along the sliding direction with respect to the movable profile part.

It is a schematic side view of a vehicle seat. It is a schematic front view of the cross section along the II-II line | wire of FIG. 3 of the slide member attached to the vehicle seat of FIG. 1 in case a locking mechanism is a locked position. FIG. 3 is a schematic side view of a cross section taken along line III-III in FIG. 2 of the slide member in FIG. 2. FIG. 4 is a schematic front view of a cross section taken along line IV-IV in FIG. 3 of a plane parallel to the slide member in FIG. 2. FIG. 3 is a schematic front view similar to FIG. 2 when the lock mechanism is in the unlock position. FIG. 4 is a view corresponding to FIG. 3 when the lock mechanism is in a safe position. It is the schematic which looked at the cross section along the VII-VII line of FIG. 2 from the bottom.

Claims (10)

A slide member for an automobile seat including a first profile part (6) and a second profile part (12), wherein one of the first and second profile parts is attached to an automobile chassis, The other of the two profile parts is fitted to a vehicle seat member that receives an occupant, and the first profile part is attached to slide along the sliding direction with respect to the second profile part,
The automobile seat slide member further includes a lock member (17) attached to the first profile portion (6), and the lock member engages with both the first and second profile portions, A lock position for preventing relative movement of the first and second profile parts (12; 6) along the sliding direction, and engagement with the second profile part without allowing the relative movement. Is movable in a transverse direction different from the sliding direction with respect to the first profile portion,
The locking member (17) is in the sliding direction with respect to the first profile portion (6), and from the locking position to the transverse direction of the locking member (17) with respect to the second profile portion (12). A slide member for an automobile seat that is movably attached to a safe position that inhibits movement.   During the normal operation of the slide member, the relative movement of the lock member (17) and the first profile portion (6) in the sliding direction is obstructed. The vehicle seat slide member according to claim 1, further comprising a holding mechanism (22, 23; 28) that enables smooth movement.   The holding mechanism (22, 23; 28) of the lock member guides the lock member (17) to move in the transverse direction with respect to the first profile portion, and when there is an impact, The movement of the lock member in the sliding direction with respect to the first profile portion (6) is enabled by dissipating the energy of the impact in the holding mechanism (22, 23; 28). The slide member for automobile seats as described.   The holding mechanism includes a groove (23) formed in the movable profile portion and a fastener portion (22) formed in the lock member, and the fastener portion is disposed in the groove in the groove portion. When there is an impact when sliding in the transverse direction, the first profile part and the second profile part fixedly attached to each other and the locking member in the sliding direction are The slide member for an automobile seat according to claim 3, wherein the slide member is attached to the first profile portion independently so that relative movement is possible. The holding mechanism (28) includes a deforming portion (29) formed in the first profile portion and having a contact portion,
The holding mechanism further includes an auxiliary member (30) that complements the deforming portion and deforms the deforming portion by moving in the sliding direction to the contact portion in the deforming portion (29),
The lock member (17) is engaged with the auxiliary member (30) to hold the auxiliary member, and the relative movement of the lock member and the first profile portion in the sliding direction is performed. The slide member for an automobile seat according to any one of claims 2 to 4, wherein the first profile portion is restrained until the auxiliary member (30) reaches the contact portion at the safe position of the lock member. The deformation part has at least one groove (29) formed in the first profile part,
The slide member for an automobile seat according to claim 5, wherein the auxiliary member has at least one pin (30) that is inserted in the first profile portion in a transverse direction and contacts the lock member (17) in the groove. .   The holding mechanism (28) is symmetrical with respect to the lock member (17), and the relative movement of the lock member and the first profile portion in the sliding direction and in the direction opposite to the sliding direction is performed. The sliding member for a motor vehicle seat according to claim 5 or 6 to prevent.   The first profile portion includes a first flange (7a) and a second flange (7b) parallel to the sliding direction, and the first flange (7a) includes the lock member (17) and the holding mechanism ( 22, 23; 28), and the second flange (7 b) is similar to the locking member and the holding mechanism of the first flange, respectively, and the locking member (17) and the holding mechanism (22, 23; 28). The sliding member for motor vehicle seats in any one of Claim 2 to 7 which has these. The first profile portion has at least one contact portion surface and at least one opening (11b) spaced from the contact portion surface along the sliding direction. Arranged to face the locking member in the locking position;
The lock member (17) is attached to the first profile portion (16) so as to be inserted into the opening (11b) while moving in the transverse direction from the lock position to the unlock position.
In the sliding direction with respect to the first profile portion, the lock member (17) no longer opposes the opening (11b) but opposes the contact portion surface, and the first of the lock member. The slide member for an automobile seat according to any one of claims 1 to 8, wherein the slide member is movable to the safe position that inhibits movement in the transverse direction with respect to the profile portion (16).   A vehicle seat member (2) for receiving an occupant and an automobile seat slide member (4) according to any one of claims 1 to 9, wherein the vehicle seat member is attached to the first profile portion. Vehicle seats that are used.

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