JPH0730130U - Stroke regulation structure of power slide device - Google Patents

Abstract

(57) [Summary] [Purpose] The stroke of the upper rail relative to the lower rail can be specified separately from the total range between the front and rear stoppers. [Constitution] Support plate 38 is limit switch 14
Is rotatably provided between a specified position for pressing and a specified release position where it cannot be pressed. Then, the spring member 44 formed of a tension coil spring is capable of converting the bias direction of the support plate 38 under the movement of the position in the front-rear direction with the pivotal support pin 41 serving as a neutral point as a boundary. It is stretched between the link arm 42.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stroke defining structure of a power slide device that slides a seat in the front-rear direction under the control of driving a motor.

[0002]

[Prior art]

 For example, a so-called power slide device that slides a seat in the front-rear direction under drive control of a motor is widely provided as a seat slide device for seats of automobiles and the like.

The power slide device includes an upper rail fixed to the lower surface of the seat cushion and the like, and a lower rail fixed to the floor surface and the like, and the upper rail is connected via rollers such as rollers and steel balls. It is slidably attached to the lower rail. The power slide device is configured so that the upper rail slides in the front-rear direction with respect to the lower rail by the operation associated with the driving of the motor.

In the power slide device, a limit switch is usually provided in order to prevent excessive driving of the motor in the front limit (front most) and the rear limit (rearmost) of the slide. The power slide device is configured so that the motor is stopped and the slide range (stroke) of the upper rail with respect to the lower rail is defined by pressing the limit switch with the corresponding stopper in the front and rear mortes.

[0005]

[Problems to be solved by the device]

 The power slide device as described above is fixed to the floor surface (vehicle floor) of an automobile or the like via front and rear front and rear leg brackets of the lower rail. In such a configuration, normally, the front is fixed to the rear rail of the upper rail with respect to the lower rail, and the rear is fixed to the corresponding position of the vehicle floor or the like.

By the way, in a taxi, a front seat of a multipurpose vehicle, or the like, it is usually required to secure a large space behind the seat. However, in the known power slide device, since there is no means for regulating sliding other than the front and rear mortes, the upper rails, that is, the seats can slide to the rear mortar regardless of the usage situation of the rear space. .

That is, even when the space behind the seat is used, the seat may be retracted to the rearmost. Therefore, in a situation where a large space is required behind the seat, there is a risk that the seat may unexpectedly slide to the rear limit position, and a decrease in safety and comfort in the rear space cannot be avoided.

In such a case, the seat occupant of the front seat normally sets the seat position while paying attention to the rear part, but it is difficult to set the seat position to an appropriate front and rear position, and thus the comfort of the seat occupant of the front seat is deteriorated. There is fear.

Here, it is conceivable to predefine the sliding range (stroke) of the seat in the front half of the entire range, etc., but in particular, it becomes difficult to attach the front end of the lower rail, and it is necessary to secure a rear space. It is not preferable because the comfort of the front seat occupant cannot be sufficiently secured when it is not required.

An object of the present invention is to provide a stroke defining structure of a power slide device capable of defining the stroke of the upper rail relative to the lower rail separately from the entire range between the front and rear stoppers.

[0011]

[Means for Solving the Problems]

 In order to achieve this object, according to the present invention, the support plate is provided with a predetermined position for pressing the limit switch with respect to the base bracket fixed and arranged between the front and rear stoppers. It is attached by a pivot pin so as to be rotatable between a non-pressable defined release position.

Then, one end of the link arm is pivotally attached to the base bracket, and a spring member formed of a tension coil spring is provided in a front-back direction with a neutral point on the pivot pin as a boundary with the rotation of the link arm. It is stretched between the link arm and the support plate so that the bias direction of the support plate can be changed under the movement of the position to.

[0013]

[Action]

 According to this invention, the support plate corresponds to the specified position and the specified release position under the biasing force of the spring member in the direction corresponding to the operation position of the operation lever connected to the other end of the link arm. Each is biased and set. At the specified position of the support plate, the stroke of the upper rail with respect to the lower rail is defined between the support plate and either the front or rear stopper.

[0014]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 and 2, in a stroke determining structure 10 of a power slide device according to the present invention, a power slide device 12 is a limit switch capable of cutting off a current supplied to a motor (not shown). 14 and front and rear stoppers 16 and 18 for pressing the limit switch operation piece 14a.

As shown in FIG. 3, the power slide device 12 is interposed between, for example, the seat 20 and the vehicle floor 22, and supports the seat so as to be slidable in the front-rear direction. As can be seen from FIG. 4 in addition to FIGS. 1 and 3, the power slide device 12 includes an upper rail 24 fixed to the lower surface of the seat cushion 23 and a lower rail fixed to the floor surface (vehicle floor) 22 or the like. 26, and the upper rail is slidably attached to the lower rail via rolling elements such as steel balls 28 and rollers 30, for example.

Further, as shown in FIGS. 1 and 3, in such a power slide device 12, in general, front and rear leg brackets 32 and 34 are fixed to the front and rear ends of the lower rail 26, respectively. A lower rail, that is, a power slide device is attached to the vehicle floor by fixing each leg bracket to the vehicle floor 22 with mounting bolts or the like.

The power slide device 12 as described above is arranged apart from each other on the left and right sides of the seat 20.

Although the power slide device 12 normally operates under the drive control of the motor associated with the switch operation, the configurations of the motor and the drive mechanism interlocking with the motor are well known, and the configuration itself is It is not the purpose of this invention and will not be described in detail here.

As can be seen from FIG. 1, the limit switch 14 is fixed to the upper rail 24 via the bracket 36, while the front and rear stoppers 16 and 18 are slidable on the lower surface of the lower rail 26. It is fixed to the locations corresponding to the front limit position (front most) and the rear limit position (rear most). The limit switch 14 and the front and rear stoppers 16 and 18 are provided so as to extend to the inner side of the seat 20.

The front and rear stoppers 16 and 18 are provided so that the upper rail 24 slides with respect to the lower rail 26 to push the operating piece 14a of the limit switch 14 under engagement. The limit switch 14 is normally ON, and is configured to be turned OFF by sliding the operation piece 14a.

With such a configuration, when the upper rail 24 reaches the front or rear most of the lower rail 26, the motor is stopped by pressing the limit switch operation piece 14a by the front and rear stoppers 16 and 18. It In other words, the stopping of the motor at the front and rear astutes prevents the upper rail 24 from sliding relative to the lower rail 26, preventing the motor from being excessively driven at each position and ensuring that the motor is not overheated or damaged. It can be prevented.

Since the limit switch 14 can have a known general configuration, a detailed description of the configuration will be omitted here.

Here, as shown in FIG. 1 and FIG. 2, in the present invention, the support plate 38 capable of pressing the operating piece 14a of the limit switch under engagement is provided with the front and rear stoppers 16 , 18 are arranged separately from these. As can be seen from FIG. 4 in addition to FIGS. 1 and 2, the support plate 38 is formed, for example, in a substantially isosceles triangular shape, and has a predetermined shape with respect to the base bracket 40 extending from the lower rail 26. It is rotatably within the range and is connected and pivotally attached by, for example, a pivot pin 41.

The rotation range of the support plate 38 with respect to the base bracket 40 is defined by, for example, a pair of bending pieces 40a and 40b provided at predetermined positions of the base bracket, as shown in FIGS. Has been done. The position of the support plate 38 defined by the contact with the bent pieces 40a, 40b of the base bracket is, as will be described later, a defined position for pressing the limit switch operation piece 14a and a defined release position for not pressing. , Respectively.

Further, one end of the link arm 42 is pivotally attached to the base bracket 40 by a pivot pin 41, for example. Then, as shown in FIGS. 1 and 4, a spring member 44 composed of a tension coil spring is stretched between the locking piece 42a of the link arm 42 and the locking piece 38a of the support plate 38. .

The other end of the link arm 42 is linked to the operating lever 50 via a long hole-shaped guide hole 48, for example, by a pivot pin 46. The guide hole 48 is provided in a range in which the swing of the link arm 42 around the pivot pin 41 can be guaranteed.

The operation lever 50 is provided on the lower rail 26 so as to be movable in the front-rear direction of the power slide device 12 by a combination of the guide hole 52 and the support pin 54, for example.

Here, in such a configuration, due to the front-back position of the spring member (tensile coil spring) 44 with the neutral point located on the pivot pin 41 as a boundary, the bias direction of the support plate 38 by the spring member is determined. Can be decided. That is, in the case where the spring member 44 is located at the left rear position in the drawing with respect to the pivot pin 41 shown in FIG. 2, the support plate 38 is biased clockwise in the drawing under the biasing force of the spring member. Thus, the engaging position with the bent piece 40a, that is, the set position is set.

Further, when the spring member 44 is provided at the front position on the right side in the drawing with respect to the pivot pin 41 shown in FIG. 5, when the support plate 38 is reversed in the drawing under the biasing force of the spring member. It is biased in the total direction, and is set to the engagement position with the bending piece 40b, that is, the prescribed release position.

The prescribed release position of the support plate 38 is set at the pulling operation position of the operation lever 50 forward (to the right in the drawing), as shown in FIG. In such a release position of the support plate 38, the pressing operation of the limit switch 14 by the support plate does not occur, and the operation piece 14a of the limit switch is pressed by the front and rear stoppers 16, 18. Since the limit switch moves up to, the stroke of the upper rail 24 with respect to the lower rail 26 is defined in the entire range between the stoppers.

Then, from such a state, for example, when the operation lever 50 is pushed backward (left in the figure), the link arm 42 swings around the pivot pin 41 in the counterclockwise direction to pivot the pivot pin 41. The spring member 44 moves rearward relative to the pin. Then, as shown in FIG. 2, the support plate 38 is engaged with the bending piece 40a under the biasing force of the spring member 44, and is set to the specified position with respect to the limit switch 14.

In this case, the pressing operation of the limit switch operating piece 14 a by the support plate 38 restricts the rearward movement of the limit switch 14, that is, the sliding of the upper rail 24 with respect to the lower rail 26. The stroke of the upper rail is defined between the front stopper 16 and the support plate.

That is, according to the present invention, since the slide of the upper rail 24 to the rear ast is regulated by the support plate 38 at the specified position, the stroke of the upper rail relative to the lower rail 26 can be changed without changing the position of the rear stopper 18. Can be defined within a predetermined forward range. Therefore, the seat 20 can be prevented from retracting more than necessary, and a space behind the seat 20 can be secured and safety in the rear space can be sufficiently improved.

Then, the biasing direction of the support plate 38 can be appropriately switched by the movement of the position of the spring member 44 in accordance with the operation of the operation lever 50 in a predetermined direction. The specified position and specified release position can be set appropriately.

Further, the original stroke of the upper rail 24 with respect to the lower rail 26 in the entire range between the front and rear stoppers 16 and 18 can be easily set under the setting of the support plate 38 to the specified release position. can get. Therefore, the lower rails can be easily attached to the vehicle floor 22 as in the past, and good workability at the time of attachment to the vehicle floor can be sufficiently secured as in the past.

Here, the support plate 38 is set to a prescribed position where the limit switch 14 can be pressed by, for example, contact with the bending piece 40a under the biasing force of the spring member 44. However, if the support plate is pressed from outside the specified range between the support plate and the front stopper 16, the support plate resists the biasing force of the spring member and counteracts around the pivot pin 41. Rotate clockwise.

As shown in FIG. 6, in the rearmost with respect to the lower rail 26, when the limit switch 14 moves forward (to the right in the figure) together with the upper rail under the drive of the motor, and pushes the support plate from the rear side. As shown by the chain double-dashed line, the support plate rotates counterclockwise against the biasing force of the spring member 44 to ensure the movement of the limit switch within the specified range. When the operating piece 14a of the limit switch passes laterally while pressing the support plate 38, the support plate is automatically returned to the specified position under the biasing force of the spring member 44.

That is, since the limit switch 14, that is, the upper rail 24 can be automatically moved within the specified range without operating the operating lever 50, the operability is not complicated.

Here, in the embodiment, the support plate 38 is illustrated as having a substantially triangular shape, but since it is sufficient if the support plate 38 can be rotated between the specified position and the specified release position with respect to the limit switch 14, the support plate 38 The shape is not limited to this.

Further, in the embodiment, the sliding range of the upper rail 24 with respect to the lower rail 26 is defined between the support plate 38 and the front stopper 16, but the upper rail between the support plate and the rear stopper 18 is defined. The stroke may be specified.

In the embodiment, the invention is embodied as a power slide device to be mounted on a seat of an automobile or the like, but the invention is not limited to this. For example, a seat of a train, a flying machine, a ship, or the like. The invention may be applied to a power slide device mounted on the.

The above-described embodiments are for explaining the present invention, and are not intended to limit the present invention in any way, and all modifications and alterations within the technical scope of the present invention are also applicable. It goes without saying that it is included in the invention.

[0044]

[Effect of device]

 As described above, according to the stroke defining structure of the power slide device according to the present invention, the stroke of the upper rail with respect to the lower rail is set at the specified position of the support plate arranged between the front and rear stoppers. It can be specified in a narrow range other than the entire range between the front and rear. In other words, if the rearward stroke of the seat is narrowed, excessive rearward movement of the seat can be reliably prevented, so that safety in the rear space is ensured.

In addition, since the stroke of the entire range between the front and rear stoppers can be obtained at the prescribed release position of the support plate, the mounting work on the vehicle floor or the like is not complicated and a wide rear space is secured. The comfort of the seated person when not needed is improved.

Further, in the configuration in which the support plate is rotated under the pressure from outside the specified range by the limit switch to ensure the passage of the limit switch, the operating lever is not operated and the inside of the specified range is maintained. Since the limit switch, that is, the upper rail, can be moved, forgetting to operate the operating lever can be prevented, and the operability of the operating lever and the safety in the rear space can be reliably improved.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a stroke defining structure of a power slide device according to the present invention.

FIG. 2 is a schematic plan view of a stroke defining structure of the power slide device at a specified position of a support plate.

FIG. 3 is a schematic side view of a seat on which a power slide device is mounted.

FIG. 4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is a schematic plan view of a stroke defining structure of the power slide device at a position where the support plate is released from the rule.

FIG. 6 is a schematic plan view of a stroke defining structure of the power slide device at a specified position of a support plate in a rearmost of the upper rail.

[Explanation of symbols]

 10 Power slide device stroke regulation structure 12 Power slide device 14 Limit switch 14a Limit switch operation piece 16 Front stopper 18 Rear stopper 24 Upper rail 26 Lower rail 38 Support plate 41 Pivot pin 42 Link arm 44 Spring member (tensile coil spring) 50 Operating lever

Claims (2)

[Scope of utility model registration request] 1. A power slide device capable of defining a slide range of an upper rail relative to a lower rail by stopping a motor when a limit switch is pressed by front and rear stoppers, wherein a support plate is provided between the front and rear stoppers. With respect to the arranged and fixed base bracket, it is attached by a pivot pin so as to be rotatable at least between a specified position for pressing the limit switch and a specified release position where it cannot be pressed, and one end of the link arm is The spring member, which is pivotally attached to the base bracket and is composed of a tension coil spring, moves the support plate in the biasing direction under the movement of the position in the front-back direction with the neutral point as a boundary with the rotation of the link arm. Convertible, it is stretched between the link arm and the support plate, Under the biasing force of the spring member in the direction corresponding to the operating position of the operating lever connected to the other end, the support plate is biased and set to either the specified position or the specified release position, respectively. Stroke regulation structure of power slide device. 2. A support plate at a specified position,
When the support plate is pressed from outside the specified range against the biasing force of the spring member, the limit switch passes
The stroke regulating structure for a power slide device according to claim 1, wherein the stroke is regulated without a pressing operation, and the support plate is returned to a prescribed position under the biasing force of the spring member after passing through the limit switch.