KR20110054713A - Passive type seat height holding device - Google Patents

Abstract

PURPOSE: A device for fixing the height of a passive type seat is provided to reduce manufacturing costs compared with a pumping device and increase brake force without a clutch such as a pumping device. CONSTITUTION: A device for fixing the height of a passive type seat comprises a front housing(1), a rear cover(2), and a working unit. The front housing forms a space. The rear cover is combined with the front housing. The front housing and the rear cover are combined by a fixing hook(2c) of the rear cover. The working unit is coupled with shaft holes punched at the center of the front housing and the rear cover.

Description

Passive type seat height holding device

The present invention relates to a seat height fixing device, and more particularly to a passive type seat height fixing device for adjusting the seat height through the pressing operation.

Seats, which are seat seats that are generally installed in the front and rear of the interior of a vehicle, are equipped with various convenience devices for the comfort of the passengers.

For example, the sliding function that can be pushed and pulled back and forth according to the passenger's body shape, and the lifting function to move the seat up and down depending on the situation, as well as the reclining to adjust the inclination of the seat back ) Functions.

In addition, there is also a height adjustment device for seat elevation function to adjust the height of the seat to fit the passengers.

In one example, the pumping device (Pumping Device) is connected to the power transmission to the link means of the seat cushion in the seat cushion, and is operated using a lever provided on the outside of the power seat seat cushion in accordance with the external operating force input.

The pumping device is mainly composed of a clutch unit and a brake unit, and the clutch unit functions to transfer external input to the link means of the seat cushion, and the brake unit provides a link unit that has been operated. It acts to fix.

The pumping device as described above has the convenience of operation through lever operation, but the structure is complicated and the price is high, so that a high cost burden is applied to a low-cost vehicle.

In contrast to the pumping device, the brake drum type as a dial type includes only a brake unit that fixes the link means of the seat cushion, and thus has a simple structure and a low manufacturing cost, which is economical and suitable for application to a low-cost vehicle.

However, the brake drum method as described above generates a small torque on the brake side, which makes it difficult to apply to the seatback integrated sheet.

Therefore, the present invention has been invented in view of the above-mentioned, and after pressing the release state to the balance spring (Balance Spring) of the seat by pressing the height adjustment, the release of the balance spring to switch back to the fixed state By providing a brake, the object of the present invention is to provide a passive type seat fixing device that can provide a strong braking force without a clutch such as a pumping device, and can significantly lower the manufacturing cost compared to the pumping device.

In addition, the present invention simplifies the configuration while providing the same brake force as that generated by the pumping device, thereby eliminating the need for a seat cushion side structure, and providing high compatibility with low-cost vehicles at low cost. It is an object of the present invention to provide a passive sheet height fixing device having a.

The present invention for achieving the above object, the passive type seat height fixing device is coupled to the rear cover when the axially moved in the inner space of the front housing located toward the seat side, the balance spring side of the seat And an actuating means for releasing the brake force restraining the rotation of the sector gear to adjust the seat height by freely raising the balance spring, and generating a brake force to restrain the rotation of the sector gear by releasing it. do.

The front housing and the rear cover are coupled using a fixing hook of the rear cover, and the fixing hook has a structure in which its end is wider than the width of the mounting groove of the front housing.

The operating means is characterized in that the coupling using a shaft hole drilled at each of the center position of the front housing and the rear cover.

The actuating means forms an external gear so as to engage with the internal gear of the front housing in the inner space of the front housing, a brake wedge having an annular ring shape, and is positioned inwardly of the brake wedge and exits the pinhole of the front housing. An unlocking block coupled to a button to be applied, an unlocking spring for restoring the axial movement of the unlocking block, a brake drum which is converted to a rotational state through the axially moved unlocking block, and the brake wedge It consists of a roller for generating a brake force for restraining the brake drum through a friction force.

The brake wedge forms at least one or more restraint section surfaces protruding at a predetermined interval from an inner inner surface to narrow its inner diameter, and an interval between the brake wedges that does not form the restraint section surface defines the distance between the brake drum and the brake drum. The roller position surface is formed at intervals larger than the diameter of the.

The unlocking block has a button for drilling a shaft hole in the center position, at least one protruding leg extended to the outer circumferential surface of the unlocking block, and protruding and extending to the opposite side of the protruding leg to penetrate through the pinhole drilled in the front housing; It has a pair of load input pin shafts that are coupled.

The unlocking spring protrudes inwardly of the front housing and is elastically supported between the unlocking block and the brake drum in a state of being fitted in the shaft boss that forms the shaft hole.

The brake drum has a cylindrical stepped body having a step, a fixed shaft extending to one side from the center of the stepped body to a small diameter and fitted into the shaft hole of the front housing, and a rear diameter extending from the opposite direction of the fixed shaft to the rear cover. An extension shaft penetrating the shaft hole of the shaft and an output gear provided toward the extension shaft and engaged with the sector gear of the balance spring provided on the seat side.

The roller is composed of an insert spring having an elastic force positioned between the first and second roller shafts and the first and second roller shafts to push the first and second roller shafts.

At least one roller is provided on the roller position surface of the brake wedge, and the distance between the rollers is smaller than the width of the protruding leg of the unlocking block.

According to the present invention, there is an effect of providing a high brake force to stably hold the balance spring of the seat without changing the link side structure of the seat cushion.

In addition, the present invention also has the effect of having a high compatibility that can be applied without changing the link-side structure of the seat cushion.

In addition, the present invention has a simple configuration without a clutch while having the same size as the brake force of the pumping device (Pumping Device), has the same performance and significantly lower the manufacturing cost has the effect of increasing the mountability for low-cost vehicles.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Since the exemplary embodiments of the present invention may be embodied in various different forms, one of ordinary skill in the art to which the present invention pertains may be described herein. It is not limited to the Example to make.

Passive type seat height fixing device of the present invention is to change the seat height without a load on the seat, release the fixed state of the balance spring by pressing the button installed on the side of the seat in the seat state without load After changing the seat height, the seat height is adjusted by keeping the balance spring fixed again with friction when the button is released.

Figure 1 shows an exploded perspective view of a passive type sheet height fixing device according to the present invention.

As shown, the passive type seat fixing device includes a front housing 1 that forms a space therein, a rear cover 2 coupled to the front housing 1, and an external force input from the front housing 1 side. It is converted into a rotatable state so as not to restrain the rise of the balance spring (Balance Spring), and constitutes an operating means for generating a brake force for switching the balance spring to a fixed state in the external force release state.

The actuating means has a structure arranged at the center of the shaft by using shaft holes 1a and 2a drilled at the center positions of the front housing 1 and the rear cover 2, respectively.

The front housing (1) is a shaft hole (1a) formed in the shaft boss (1e) protruding inward from the center position, a plurality of recessed grooves (1b) are formed at intervals along the outer circumferential surface border, and the shaft hole (1a) It has a pinhole (1c) drilled on both sides of the, and the internal gear (1d) formed along the circumference of the inner peripheral surface forming an inner space.

The rear cover (2) is in close contact with the shaft hole (2a) drilled in the center position, the side flange (2b) extending to both sides through a plurality of holes for fixing, and the seating groove (1b) of the front housing (1) It is equipped with a plurality of fixing hooks 2c for generating a fixing force.

As shown in FIG. 2 showing a coupling state of the front housing 1 and the rear cover 2, the fixing hook 2c of the rear cover 2 is coupled to the seating groove 1b of the front housing 1, and The mounting grooves 1b and the fixing hooks 2c are formed in pairs, respectively, in the upper and lower sides with respect to the center.

The fixing hook 2c further extends the end of the fixing groove 2b to a width of the seating groove 1b to further prevent the separation of the rear cover 2 from the front housing 1 in a coupled state.

The operating means according to the present embodiment is located in the inner space of the front housing (1) and the brake wedge (3) located in the interior of the brake wedge (3) come out of the pinhole (1c) of the front housing (1) An unlocking block 4 coupled to an external force button 20, an unlocking spring 6 for restoring the axial movement of the unlocking block 4, and the unlocking block It consists of a roller (10) for generating a brake force for restraining the brake drum (7) through the friction force against the brake wedge (3) and the brake drum 7 is converted to a rotation state through 4).

3 shows a cross-sectional structure of the brake wedge 3.

As shown, the brake wedge 3 is an annular ring type, the outer gear (3a) and the inner inner surface formed along the outer circumferential surface edge to engage the internal gear (1d) formed in the inner space of the front housing (1) Protrudes at a predetermined interval from to form a restraint section surface (3c) to narrow the inner diameter.

The section not forming the restraint section surface 3c is formed by the roller position surface 3b using the inner diameter of the brake wedge 3 so as to form a motion section of the roller 10 providing the brake force. (3c) consists of a structure which protrudes gently between the roller position surfaces 3b.

The section forming angle W of the roller positioning surface 3b and the restraint section surface 3c is formed at 60 °, and the forming angle Wa of the roller positioning surface 3b is centered on both positions of the section forming angle W. By forming, the forming angle Wb of the restraint section surface 3c is formed between the roller position surfaces 3b.

When assembled, the spacing Q of the roller position surface 3b of the brake wedge 3 and the spacing q of the restraint section surface 3c with respect to the brake drum 7 are formed as shown in FIG.

The unlocking block 4 has a structure in which a plurality of protruding legs 4b having a predetermined width are formed by drilling a shaft hole 4a at a central position, and the edge outer peripheral surface thereof. It has a chamfered shape for easy insertion.

In the present embodiment, the unlocking block 4 further includes a pair of load input pin shafts 5 protruding outward from the protruding legs 4b, and the load input pin shafts 5 are fitted into the pinholes 1c to face the front. It is fastened to the button 20 which is exposed to the outside in the state coupled to the housing (1).

The load input pin shafts 5 are also formed in pairs on both sides of the shaft hole 4a.

The brake drum 7 according to the present embodiment has one side coupled to the shaft hole 1a of the front housing 1 and the opposite side coupled to the shaft hole 2a of the rear cover 2.

The brake drum 7 has a cylindrical stepped body 7a having a step and a fixed shaft extending to one side with a small diameter from the center of the stepped body 7a and fitted into the shaft hole 1a of the front housing 1. 7b and an extension shaft 7c extending in a small diameter in a direction opposite to the fixed shaft 7b and penetrating through the shaft hole 2a of the rear cover 2.

In the present embodiment, the brake drum 7 is further provided with an output gear 8 toward the extension shaft 7c, and the output gear 8 restrains the balance spring by engaging the sector gear of the balance spring installed on the seat side. It works.

The roller 10 according to the present embodiment is positioned between the first and second roller shafts 10a and 10b and the first and second roller shafts 10a and 10b so that the first and second roller shafts 10a and 10b are positioned. It consists of the insert spring 10c which has an elastic force to push out.

The roller 10 is a pair of the first and second roller shafts 10a and 10b and the insert spring 10c, and constitutes at least six pairs in one unit.

The button 20 according to the present embodiment is coupled to be movable in the axial direction with respect to the outer circumferential surface of the front housing 1 while the load input pin shaft 5 of the unlocking block 4 is fixed. 20) to release the brake force that restrains the balance spring.

Figure 4 shows the assembled state of the passive sheet height fixing device according to this embodiment.

As shown, the front housing 1 and the rear cover 2 are coupled using the fixing hook 2c of the rear cover 2, and the brake wedge 3 is formed in the inner space of the front housing 1. Engaged with the gear 1d via the external gear 3a, the unlocking block 4 projects the load input pin shaft 5 out of the front housing 1 so as to engage the button 20, and the brake drum 7 ) Is assembled in a state where the opposite part is exposed to the outside of the rear cover 2 while being fixed to the front housing 1.

In this state, the output gear 8 provided on the brake drum 7 is engaged with the balance spring side sector gear while being exposed to the outside of the rear cover 2.

In addition, an unlocking spring 6 is interposed between the unlocking block 4 and the brake drum 7, and the unlocking spring 6 is axially oriented toward the brake drum 7 when the button 20 is pressed. It provides an elastic force for returning the moved unlocking block 4 to the initial position.

That is, the unlocking spring 6 is elastically supported between the unlocking block 4 and the brake drum 7 in a state in which the unlocking spring 6 is fitted to the shaft boss 1e protruding inwardly of the front housing 1, thereby providing a button 20. When the unlocking block 4 is axially moved toward the brake drum 7 by pressing, it acts as an elastic return force that lifts the unlocking block 4 when the button 20 is released.

The axial movement of the unlocking block 4 is guided through the axial boss 1e protruding inwardly of the front housing 1.

In addition, between the brake wedge 3 and the brake drum 7 is interposed a roller 10 for generating a brake force for restraining the brake drum 7 by using a friction force.

When the assembly is made on the roller position surface 3b of the brake wedge 3, the roller 10 has a first roller shaft 10a and a second roller shaft 10b on both sides of the insert spring 10c as shown in FIG. ) To form a pair.

In this assembling state, even if the first and second roller shafts 10a and 10b are pushed out of the insert spring 10c, the restraint section surface 3c protruding while continuing the roller position surface 3b of the brake wedge 3 is connected. By constraining the movement through) it is possible to restrain the rotation of the brake drum (7).

As shown in Fig. 4, the gap Zb between the rollers 10 is formed to be narrower than the width Za of the protruding legs 4b of the unlocking block 4, so that the protruding legs 4b fitted toward the rollers 10 are first and second. The roller shafts 10a and 10b are pushed toward the insert spring 10c to release the brake force on the brake drum 7.

When mounted on the seat in the assembled state, the button 20 side is exposed to the seat side, and the output gear 8 side is installed to engage the sector gear of the balance spring.

Figure 5 shows a brake force release cross-sectional view of the passive type seat height fixing device according to the present invention.

When the button 20 is pressed without a load applied to the seat cushion side, as shown, the load input pin shaft 5 side is pressed so that the unlocking block 4 compresses the unlocking spring 6 and the front housing 1. The axial movement along the axial boss (1e) of the, and by the continuous movement of the protruding legs (4b) of the unlocking block (4) is sandwiched between the rollers 10 to block the formation of friction force through the rollers (10).

This state is shown in FIG. 6, and as shown, the protruding legs 4b sandwiched between the rollers 10 push the first and second roller shafts 10a and 10b toward the insert springs 10c, thereby providing a first roller. The shaft 10a and the second roller shaft 10b are closer to each other to compress the insert spring 10c.

In this way, the first roller shaft 10a and the second roller shaft 10b are pushed toward the roller position surface 3b of the brake wedge 3, and the unlocking block is held toward the restraint section surface 3c of the brake wedge 3. The protruding leg 4b of (4) is changed to the positioned position.

Because of this, since the brake wedge 3 and the brake drum 7 are not in contact with the first and second roller shafts 10a and 10b, the brake drum 7 is free from frictional force that restricts rotation. The rotation is switched.

In such a state, the output gear 8 of the brake drum 7 does not restrain the sector gear of the balance spring provided on the seat side, so that the sector gear is raised without the load and the restraint force is released. It is rotated through the balance spring which rises upward.

The rotation of the sector gear is transmitted through the interlocking output gear 8 to rotate the brake drum 7, and the free rotation of the brake drum 7 does not interfere with the lifting operation of the balance spring, thus raising the seat height. You can do it.

In order to maintain the height-adjusted sheet state, it is simply completed by releasing the pressed button 20.

The unlocking block 4 of which the external force is released is pushed back through the elastic return force of the unlocking spring 6, and the protruding leg 4b is moved by the movement of the unlocking block 4 to the first and second roller shafts. By exiting from 10a, 10b, the first and second roller shafts 10a, 10b are also switched to the state of being pushed back by the elastic force of the insert spring 10c.

This state is shown in FIG.

As shown, the first roller shaft 10a and the second roller shaft 10b are restrained sections of the brake wedge 3 by the elastic force of the insert spring 10c due to the return of the initial state of the unlocking block 4. Occupy (3c).

As a result, the first and second roller shafts 10a and 10b are switched to be in contact with the brake wedge 3 and the brake drum 7, respectively, so that the brake drum 7 has the first and second roller shafts ( Strong frictional force can be formed through 10a and 10b).

As described above, the strong frictional force applied to the brake drum 7 acts as a brake force that restrains the rotation of the sector gear of the balance spring to stop the operation of the balance spring, so that the seat height adjustment state can be fixed. Will be.

1 is an exploded perspective view of a passive sheet height fixing device according to the present invention

2 is a brake side assembly view of a passive seat height fixing device according to the present invention;

Figure 3 is a brake side cross-sectional view of the passive type seat fixing device according to the present invention

Figure 4 is an assembled perspective view of the passive type sheet height fixing device according to the present invention

Figure 5 is a cross-sectional view of the brake force release of the passive seat height fixing device according to the present invention

6 is a cross-sectional view of a state of releasing the brake force by pressing the passive type seat height fixing device according to the present invention.

    <Description of the symbols for the main parts of the drawings>

1: Front housing 1a, 2a, 4a: Shaft hole

1b: Seating groove 1c: Pinhole

1d: Internal gear 1e: Shaft boss

2: rear cover

2b: side flange 2c: fixed hook

3: brake wedge 3a: external gear

3b: Roller Positioning Surface 3c: Restraint Section Surface

4: unlocking block 4b: protruding leg

5: Load input pin shaft 6: Unlocking spring

7: Break drum 7a: Step body

7b: fixed shaft 7c: extended shaft

8: output gear 10: roller

10a, 10b: 1st and 2nd roller shaft 10c: insert spring

20: button

Claims (11)

When axially moved in the inner space of the front housing located on the seat side in combination with the rear cover, the balance spring is released by releasing the brake force that restricts the rotation of the sector gear on the balance spring side of the seat. Passive type seat height adjustment device, characterized in that it comprises an actuating means for adjusting the seat height and generating a brake force to restrain the rotation of the sector gear by pressing and releasing. The passive type seat height of claim 1, wherein the front housing and the rear cover are coupled using a fixing hook of a rear cover, and the fixing hook has a structure in which an end thereof is wider than a width of a seating groove of the front housing. Fixture. The passive seat height fixing device according to claim 1, wherein the actuating means are coupled using shaft holes drilled at the center positions of the front housing and the rear cover, respectively. The brake unit according to claim 3, wherein the actuating means forms an external gear to be engaged with the internal gear of the front housing in the inner space of the front housing, and forms a ring wedge and an inner side of the front of the brake wedge. An unlocking block coupled to a button exerting a pinhole to apply an external force, an unlocking spring for restoring the axial movement of the unlocking block, and a brake drum which is converted into a rotation state through the axially moved unlocking block; Passive type seat fixing device, characterized in that consisting of a roller for generating a brake force for restraining the brake drum through the friction force against the brake wedge. 5. The brake drum of claim 4, wherein the brake wedge forms at least one or more restraint section surfaces protruding at a predetermined interval from an inner inner surface thereof to narrow the inner diameter thereof, and the section between the brake wedges does not form the restraint section surface. Passive type sheet height fixing device, characterized in that the roller position surface is formed with an interval of greater than the diameter of the roller. The method of claim 4, wherein the unlocking block drills the shaft hole in the center position, at least one protruding leg extended to the outer peripheral surface and the protruding extension to the opposite side of the protruding leg, and penetrates the pinhole drilled in the front housing Passive type seat height adjustment device characterized in that it has a pair of load input pin shaft coupled with the push button. The passive seat height fixing device according to claim 4, wherein the unlocking spring is elastically supported between the unlocking block and the brake drum in a state where the unlocking spring protrudes inwardly of the front housing and is fitted to the shaft boss that forms the shaft hole. 5. The brake drum according to claim 4, wherein the brake drum has a cylindrical stepped body having a step, a fixed shaft extending from the center of the stepped body to a smaller diameter and fitted into the shaft hole of the front housing, and a smaller diameter in the opposite direction of the fixed shaft. And an output shaft extending through the shaft and penetrating the shaft hole of the rear cover, and an output gear provided toward the extension shaft and engaged with the sector gear of the balance spring installed on the seat side. 5. The passive sheet height fixing according to claim 4, wherein the roller comprises an insert spring having an elastic force positioned between the first and second roller shafts and the first and second roller shafts to push the first and second roller shafts. Device. 10. The passive seat height fixing device according to claim 9, wherein at least one roller is installed on the roller position surface of the brake wedge. 11. The passive type seat fastening device according to claim 10, wherein a distance between the rollers is smaller than a width of a protruding leg of the unlocking block.

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