JPH0995167A - Pop-up mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To release rattling in pop-up state in which an elevatable body is on the upward movement limit so as to surely lock it, and perform a lock releasing operation from this state easily and surely, in a pop-up mechanism in which the elevatable body is raised or brought down by a link mechanism. SOLUTION: A lock claw 54 of the extreme end part of a lock body 5 rotationally movably fitted to the upper parts of pillars 2a, 2b is engaged with a lock recessed parts 34a, 34b provided on the underside of an elevatable body 3 so as to perform locking in pop-up state, and by a lock releasing projection of a lock piece 6 slidably fitted to the elevatable body 3, the lock body 5 is rotationally moved so as to release the lock state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is incorporated into an armrest formed on a center console box of an automobile, an armrest mounted on a rear seat, or the like, and is preferably used as a height adjusting mechanism for the armrest or the like. With respect to the above, in more detail, a lifting mechanism is rotatably attached to a plurality of columns rotatably provided on the base body to form a link mechanism, and the columns are rotatably raised or tilted. , A pop-up mechanism for raising and lowering the elevating body.

[0002]

2. Description of the Related Art Conventionally, a center console box a as shown in FIG. 23 has been provided between a driver's seat and a passenger's seat in the interior of an automobile. An elevating body (not shown in FIG. 23) for raising and lowering by a button operation is provided on the lid b of a, and an openable / closable lid b for closing the console box a is lifted to lift the armrest (armrest). As well as being used. In FIG. 23, e is a cover that covers the upper surface side of the lid b, and the elevating body is arranged between the cover e and the lid b.

In such an armrest-combined console box, as a pop-up mechanism for raising and lowering the elevating body, there are conventional pop-up mechanisms shown in FIGS. That is, the support c on the lid b of the console box a,
d is attached so as to be able to be erected at a predetermined distance from each other, and an elevating body f having a cover e attached thereto is rotatably connected to the upper ends of the columns c and d to form a link mechanism.
The torsion springs h and h are arranged between d and the bases g and g of the columns c and d fixed to the lid b, and both columns c and d are provided.
A long plate-like lock piece i that urges the column in the standing direction and locks the columns c and d in a folded state (state of FIG. 24) and in a pop-up state in which the columns c and d are upright (state of FIG. 25). Is attached to the elevating body f so as to be slidable in the front-rear direction (horizontal direction in the drawing) and biased forward by the coil spring j.

As shown in FIG. 24, this pop-up mechanism has a structure in which both support columns c and d are in a folded state in which the support columns c and d fall on the cover b against the biasing force of the torsion springs h and h. A hook-shaped tip of a lock protrusion k projecting from the upper surface of b engages with a lock hole m formed in the lock piece i, and resists the biasing force of the torsion springs h, h. Locked in the folded state. At this time,
The lock piece i is located at the front (left side in the drawing) movement limit by the urging force of the coil spring j, and the lock projection n protruding from the front end thereof is formed at the upper end of the front column c. It is in a state of being inserted into the pushing recess o having a substantially right-angled fan shape.

From this state, when the elevating body f is raised and used as an armrest, the lock release piece s is integrally extended from the front end portion of the lock piece i and the lock release piece s protruding outside the cover e is pressed p ₁ . . Then, as shown in FIG. 26 (A), the lock piece i slides backward (to the right in the figure), and the edge of the lock hole m provided in the lock piece i and the lock projection k are provided. Is released from the engaged state and the locked state is released. As a result, both columns c and d are rotated in the upright direction by the urging force of the torsion springs h and h, the elevating body f is raised by the action of the link mechanism, and as shown in FIG. 26 (B). And the pressing force p ₁
Is released, the lock piece i that has been moved forward (left side in the drawing) by the urging force of the coil spring j is released.
The lock convex portion n is pushed rearward by the inner surface of the pushing concave portion o by the pivotal movement of the column c, and the lock piece i slides backward again. Then, when the support pillar c is rotated to the upright state, the locking recessed portion r formed on the inner surface of the upper end portion of the support pillar c and the lock protruding portion n are brought into a state of being in agreement with each other, and as shown in FIG. The biasing force of the spring j moves the lock piece i again forward (left side in the drawing), the lock convex portion n is inserted into the locking concave portion r and they are engaged with each other, and both columns c and d are erected. It will be locked in a popup state.

Further, when the elevating body f is lowered from this pop-up state to return to the folded state of FIG. 24, the lock releasing piece s is pressed p ₂ again, and as shown in FIG. 26 (C). , The lock piece i is slid backward (right side in the figure). As a result, the lock convex portion n provided on the lock piece i comes out of the locking concave portion r of the column c, and the locked state is released. In this state, the lifting body f
Is pressed downwards and the action of the link mechanism causes both columns c,
d the will depress the lifting body f while defeat is rotated rearward, as shown in FIG. 26 (D), the pressing force p ₂
Is released, the tip of the lock projection k is brought into contact with the taper portion formed on the lower surface side of the rear edge of the lock hole m of the lock piece i that has moved forward (left side in the drawing).
In this state, by further pressing and lowering the elevating body f by pressing p ₃ , the lock piece i is once slid backward by the action of the taper portion and the lock projection k is inserted into the lock hole m, and then again. The lock piece i slides forward by the urging force of the coil spring j, and as shown in FIG. 24, the lock protrusion k and the lock hole m are engaged with each other and locked in the folded state.

As described above, according to the pop-up mechanism, the lifting piece f is automatically raised by pressing the unlocking piece s, and the lid b of the center console box a can be favorably used as an armrest. Can
After use, the lock releasing piece s can be pressed to release the locked state, and the elevating body f can be pushed down and folded.

[0008]

However, this conventional pop-up mechanism has a lifting body f at the time of pop-up.
There is a problem that rattling easily occurs.

That is, in this pop-up mechanism, as described above, the lock convex portion n of the lock piece i is inserted into and engaged with the locking concave portion r formed at the upper end portion of the column c, and the lifting body f is popped up. The lock piece i is slidably provided on the lifting / lowering body f. Therefore, a predetermined clearance is provided between the locking piece i and the lifting / lowering body f in order to ensure a good sliding motion. Therefore, rattling occurs in the lock piece i itself, and rattling occurs in the elevating body f. In addition, a predetermined clearance is set between the lock convex portion n and the inner surface of the locking concave portion r in order to ensure a good insertion / removal movement, which causes rattling, and this lock convex portion Since the engagement between n and the locking recess r is performed in the vicinity of the rotation axis between the column c and the lifting body f, the rattling between the locking projection n and the locking recess r is small. In the lifting / lowering body f, this may be amplified to cause a large rattling, and further, the rattling of the lock piece i itself may add to the rattling of the lifting / lowering body f to such an extent that the usability as an armrest is impaired. is there.

Further, this pop-up mechanism may not be able to favorably perform the work of releasing the locked state when shifting from the pop-up state to the folded state.
That is, in the pop-up state, as described above, the lock convex portion n of the lock piece i is inserted into and engaged with the locking concave portion r of the supporting column c, so that the rotational movement between the lifting body f and the supporting column c is performed. By locking, the lifting body f is locked.
In this case, in a state in which a force for pushing down the lifting body f is applied (usually in this state because the arm rests on the lifting body f at the armrest), the strut c tries to rotate with respect to the lifting body f. In some cases, the locking convex portion n is strongly bitten into the locking concave portion r and the locking state cannot be easily released even if the lock releasing piece s is pressed p ₂ . Moreover, since the lock convex portion n and the locking concave portion r are engaged with each other in the vicinity of the rotation axis of the support column c and the lifting body f, the force of pushing down the lifting body f is very large due to the action of the lever. There is also a possibility that the lock convex portion n and the locking concave portion r, which are engaged with each other, act between the locking convex portion n and a large shearing force, and the lock convex portion n is damaged.

The present invention has been made in view of the above circumstances, and a lift mechanism is rotatably attached to a plurality of columns rotatably provided on a base body to form a link mechanism so that the columns are erected. In a pop-up mechanism that raises or lowers the lifting body by falling it down,
(EN) Provided is a pop-up mechanism that can be securely locked without rattling in a pop-up state in which a column is erected and an elevating body is in an ascending movement limit, and from which the lock can be released easily and reliably. To aim.

[0012]

In order to achieve the above object, the present invention has a base and one end rotatably connected to the upper surface of the base, and is movably attached to the upper surface of the base. A plurality of columns, a lifting body rotatably attached to the other end of the columns, an urging means for urging the columns to rotate in the upright direction, and the columns falling on the base. And a lock means for locking in a standing state on the base body, and by releasing the locked state by the lock means from the folded state in which the column is tilted on the base body and locked by the lock means, The urging means causes the supporting column to rotate and stand up, and in this state, the supporting means is locked by the locking means to hold the elevating body in a pop-up state in which the elevating body is raised from the base body. In a pop-up mechanism in which the locking means is released and the pillar is tilted against the biasing force of the biasing means so that the pillar is locked on the substrate by the locking means in a folded state. The locking means is slidably attached to the elevating body and is a plate-like lock piece having a lock release protrusion and a lock hole that is biased in one sliding direction, and is rotatably attached to the upper part of the column. And a lock body having a lock claw at its tip, which is urged so that the tip side rotates to the above-mentioned lifting body side, and a lock projection having a lock claw at the tip, which is projectingly provided on the upper surface of the base body. The lock claw of the lock projection engages with the lock hole of the lock piece to be locked in the folded state, and the lock piece resists the biasing force. The ride state releases the engagement state between the lock hole and the lock projection, and the lock claw of the lock body engages with the lock recess formed on the lower surface of the elevating body to lock in the pop-up state. At the same time, by sliding the lock piece against the urging force, the lock release projection of the lock piece comes into contact with the tip of the lock body to rotate the lock body against the urging force. The pop-up mechanism is configured to release the engagement state between the lock claw of the body and the lock recess of the elevating body.

In the pop-up mechanism of the present invention, similarly to the above-mentioned conventional mechanism, the lifting mechanism is rotatably attached to the upper ends of a plurality of columns mounted on the upper surface of the base body so as to be rotatable, thereby forming a link mechanism. Then, by urging the supporting column by the urging means so as to rotate in the standing direction, the supporting column is rotated in the standing direction by the urging force from the folded state in which the supporting column falls on the base body, and the supporting column stands up. It is configured to automatically shift to the pop-up state described above, and is locked in the folded state and the pop-up state by the locking means having a plate-like lock piece slidably attached to the elevating body.

In this case, according to the pop-up mechanism of the present invention, the lock claw of the tip end of the lock body rotatably mounted on the upper portion of the support is engaged with the lock recess provided on the lower surface of the lifting body. Since it is configured to lock in the pop-up state, the lock in the pop-up state can be securely performed without rattling, and this lock body can be rotated by the lock release protrusion provided on the lock piece. Since it is configured to release the locked state in the pop-up state, the locked state can be easily and surely released even in the state in which the force for pushing down the elevating body is applied.

That is, since the other end of the lock body, one end of which is rotatably attached to the column, is engaged with the lower surface of the lifting body to lock in the pop-up state, it is separated from the rotary shaft to some extent. Since the two points of the lifting body and the column are connected to each other to lock the pivoting motion between the lifting body and the column, locking is performed. Even if some clearance is provided in order to smoothly rotate or engage the engaging portions between the lifting body and the lifting body, rattling of the lifting body is not amplified by amplifying the rattling at these points. Rather, it is reduced and almost no rattling occurs in the lifting body.

More specifically, in the four-point link mechanism, the relative movement distance during link movement becomes larger as the distance between the two points separated by the turning point increases, and the two points are separated to some extent. If so, the relative movement distance between the two points is larger than the relative movement distance between the two sides facing each other. Therefore, even if the distance between these two points changes a little, the change in the distance between the two sides facing each other hardly changes,
The locking means in the present invention connects such two points to each other, and even if some rattling occurs between these two points, the lifting body and the base body which come into contact with the two sides facing each other are provided. Most of them do not rattle.

Further, the force applied to the lifting body is not concentrated between the two locked points in the vicinity of the rotating shaft amplified by the action of the lever, and the locking means of the present invention is constructed. The lock body can be formed with a strength much higher than the lock convex portion n in the above-mentioned conventional example, and there is no concern that the lock body will be damaged, and the lock can be reliably performed in the pop-up state.

Further, in the lock mechanism according to the present invention, the lock body for locking in the pop-up state is pressed by the lock release projection provided on the lock piece slidably provided on the elevating body to lock the lock body. Since it is configured to release the engagement state with the lifting body by rotating the body against the urging force, even if a force to push down the lifting body is applied in the pop-up state, it is locked. The sliding state of the piece is not obstructed, and the locked state can be easily released.

That is, in the present invention, when the lock is released in the pop-up state, the lock piece is operated and slid, and the lock release projection protruding from the lock piece is applied to the tip side of the lock body. The lock body is pressed against the lock body by contacting the lock body, and the lock body is rotated in a direction in which the tip side of the lock body is separated from the lift body against the biasing force. The engagement state with and is released, and the locked state is released. Therefore, even if a force to push down the lifting body is applied, the locking action is performed by the lock body, and the locking piece for unlocking is not involved in the locking action at all, so the pushing force of the lifting body is pushed down. The sliding movement of the lock piece is not hindered by this, and the lock piece can be smoothly and smoothly unlocked by sliding the lock piece smoothly.

Here, when the lock piece is slid to release the locked state in the pop-up state, the lock piece is slid against the urging force urging in one sliding direction. The urging force for urging the piece is preferably set to be weaker than the urging force of the urging means for urging the column in the upright direction, so that the operation at the time of unlocking can be performed very smoothly. it can.

That is, sliding the lock piece against the urging force pushes the elevating body in the same direction as the sliding direction of the lock piece, and at the same time, rotates the column in the tilting direction. However, if the urging force of the lock piece is strong at this time, the urging force of the urging means is applied to the column before the lock piece slides against the urging force. Since a force exceeding the applied force is applied to rotate the column, a force is applied to the engaging portion between the lock claw at the tip of the lock body and the lock concave portion of the elevating body, which locks the rotation, and locks the lock. The release operation may not be performed smoothly. However, by setting the urging force of the lock piece to be weaker than the urging force of the column by the urging means, it is possible to reliably slide the lock piece against the urging force before the force for rotating the column is generated. Therefore, the unlocking operation can be performed smoothly and surely.

Further, the lock pawl at the tip of the lock body is provided so as to be inclined inward, and the lower end edge of the lock concave portion of the elevating body engaging with the lock pawl is locked to correspond to the inclination of the lock pawl. By providing a convex part and engaging the locking claw and the locking convex part, the locked state in the pop-up state can be made more solid, and thus a strong force is applied to the lifting body in the pop-up state. Also, the locking projection can reliably prevent the locking claw from coming out of the locking recess, and the reliability of the locked state can be improved.

In this case, the inclination of the lock claw is made to coincide with the rotational trajectory of the tip of the lock body, the locking projection is provided in correspondence with this inclination, and the biasing force of the lock piece is set as described above. By setting it weaker than the urging force of the column, when the lock body is rotated to release the locked state, the lock can be unlocked smoothly without being caught by the locking projection. You can

As described above, according to the pop-up mechanism of the present invention, all the disadvantages of the conventional pop-up mechanism described above are eliminated, and the columns are erected and the elevating body is in the pop-up state in which the pop-up mechanism is in the ascending movement limit. The lock can be locked, and the unlocking operation can be performed easily and surely from this state.

[0025]

Embodiments and examples of the present invention will be described below.
The present invention will be described more specifically. 1 to 10 show a pop-up unit equipped with a pop-up mechanism according to an embodiment of the present invention. The pop-up unit includes a lid b of a center console box a shown in FIG. 23 and a cover e thereof. The base 1 fixed to the lid b, the struts 2a and 2b movably mounted on the base 1, and the upper ends of the struts 2a and 2b. And a substantially plate-shaped lifting body 3 which is operably connected.

As shown in FIGS. 11 and 12, the base 1 has long plate-shaped base portions 11 and 11 which are parallel to each other and are separated from each other by a predetermined distance, and is integrally formed by a thick-walled substantially plate-shaped connecting portion 12. It is a connection.

The bases 11 and 11 which constitute the base body 1
On the upper surfaces of both end portions of each of them, substantially mountain-shaped leg connecting portions 13 and 13 each having a tip end portion formed in a semicircular shape are projectingly provided, and screwing holes are formed outside the leg connecting portions 13 and 13. The screw fixing projections 14 and 14 are provided in a protruding manner, and the bearing plates 15 and 15 having arcuate notches in the upper end center portions are provided inwardly of the leg connecting portions 13 and 13 so as to be spaced apart from each other by a predetermined distance. Has been done. Further, standing-up locking step portions 16 and 16 are provided on the front side (left side in the drawing) of the leg connecting portions 13 and 13 in the height direction, and the standing-up locking step portion 1 is provided.
Reference numerals 6 and 16 extend inward along the front end edges of the base portions 11 and 11. Further, the fall-side locking step portions 17 and 17 are provided so as to be adjacent to the insides of the leg connecting portions 13 and 13 so as to face the upright-side locking step portions 16 and 16.

The connecting portion 12 has a front end portion,
Square holes 121, 122, 1 at the middle and rear ends, respectively.
23 and 123 are formed, and a pedestal portion 124 that slightly bulges upward is formed at the center of the rear end of the upper surface. A hook-like lock is formed at the tip of the pedestal 124 at the center of the front end. A lock protrusion 19 provided with a claw 19a is provided so as to project. 11 and 12, reference numeral 18 is a reinforcing rib integrally provided on the upper surface side of the bases 11 and 11, and although not particularly shown, the upper and lower surfaces of the connecting portion 12 are formed at the time of molding. Is formed with a large number of recesses for dimensional stability and material saving.

A pillar 2 attached to the upper surface of the base body 1.
As shown in FIGS. 16 and 17, a and 2b are formed in a semicircular shape with upper and lower end portions having shaft insertion holes, and the lower end portion has a front surface side ((C) and (D) in FIG. ) Standing contact step 2
A pair of columnar leg portions 22 and 22 on which 1 and 21 are formed are integrally connected by connecting plates 23a and 23b in a parallel state with a predetermined distance therebetween.
At the upper end of b, an upper end portion is formed in a semicircular shape, and two shaft insertion protrusions 24, 24 having shaft insertion holes are integrally provided so as to be spaced apart from each other by a predetermined distance.

Of these columns 2a and 2b, the front (Fig.
As shown in FIG. 16, the column 2 (on the left side in FIG. 9) has a damper 7 to be described later on the outer surface of one of the columnar leg portions 22.
A connecting shaft 25 for connecting the two is projectingly provided, and a lock piece locking having a semicircular upper end existing between the shaft insertion protrusions 24, 24 at the center of the upper end of the connecting plate 23a. The protrusion 26 is provided so as to project. Furthermore, the connecting plate 23a includes
The front side (left side in FIGS. 16C and 16D) is subjected to the lightening process 27, but the rear side (right side in FIGS. 16C and 16D) is subjected to the lightening process. It is not applied and is flat. And at the upper end of this rear surface,
Two lock body attachment protrusions 28, 28 having a shaft insertion hole and having a semicircular tip portion are integrally provided so as to project.

On the other hand, the column 2b on the rear side (right side in FIGS. 1 to 9)
17, does not have the connecting shaft 25, the locking piece locking projection 26, and the lock body mounting projections 28, 28, and the connecting plate 23b has a lightening treatment 2 on both front and rear sides.
7 is given.

The columns 2a and 2b are mounted on the base 1 so that they can be erected by pivotally connecting the lower ends thereof to the bases 11 of the base 1. That is, as shown in FIGS.
The columnar leg portions 22 and 22 of a and 2b are respectively attached to the base 1
By rotatably pivoting to the leg connecting portions 13 and 13 formed on the base portions 11 and 11, the front and rear ends of the base body 1 are rotatably attached. In this case, the shaft bodies 4 and 4 connecting the leg connecting portions 13 and 13 and the columnar leg portions 22 and 22 are provided between the pair of leg connecting portions 13 and 13 provided at both ends of the base portions 11 and 11. The columns 2a and 2b are pierced and are urged in the direction in which they stand up on the base 1 by the torsion springs 41 and 41 attached to the shafts 4 and 4, respectively.

Of the columns 2a and 2b, the front column 2a has a lock body 5 axially attached to the lock body attachment protrusions 28 and 28. This lock body 5 is shown in FIG.
As shown in FIG. 8, three cutout portions 52a, 52a, 52b are formed at the rear end portion (lower end portion in FIGS. (A) and (B) of FIG. 4) of the rectangular plate substrate 51, and the shaft insertion hole 53 is formed. And three lock claws 54, 54, 54 are provided on the upper surface of the front end portion (upper end portion in FIGS. (A) and (B)) at both ends and the central portion. In addition,
(D) Reference numeral 55 in the drawing is a hooking projection with which an end of a torsion spring 43 described later is hooked.

Then, as shown in FIG. 3, the lock body mounting projections 28, 28 of the support column 2a are inserted into the notches 52a, 52a, and the lock body 5 is rotated to the support column 2a. It is rotatably attached to the pivot shaft 4
The lock body 5 is urged to rotate upward (to the side of the elevating body 3) by a torsion spring 43 attached to the lock body 5 in the notch 52b of the lock body 5. In this case, the urging force of the torsion spring 43 is, as shown in FIG.
It does not work over the entire 180 ° range of rotation of
It is set to urge in the range of 0 ° to 90 ° to 0 ° to 150 °.

A substantially plate-shaped lift 3 is rotatably attached to the upper ends of the columns 2a and 2b.

As shown in FIGS. 13 and 14, this lifting / lowering body 3 has mounting pieces 32 and 3 having screw holes at both front and rear ends of a plate-shaped base 31 bent in a crank shape at an intermediate portion.
2,32,32 are integrally formed to extend outward,
Coupling protrusions 33a, 33a, 33b, 33b having shaft insertion holes and semicircular tips are integrally provided on both sides of the front and rear ends.

Three locking holes (lock recesses) 34a, 34b, 34a penetrating through the front and back are arranged in the front portion of the plate-shaped base 31 side by side along the width direction, and the middle locking hole 34b.
Are smaller than the other locking holes 34a, 34a. In addition, a bag-shaped lock piece accommodating space portion 35 is provided in the front portion of the plate-shaped base 31 in the widthwise middle portion along the front-rear direction, and the locking hole 34b is provided in the lock piece accommodating space portion 35. Intersects with. Further, at the front end portion of the lock piece accommodation space portion 35, a lock piece insertion notch portion 36 is formed on the upper surface side of the plate-shaped base body 31, and at the lower surface side of the plate-shaped base body 31 from the front end portion thereof, the locking is performed. A protrusion slide groove 37 reaching the hole 34b is formed, and a spring accommodating hole 38 penetrating the plate-shaped substrate 31 in the front and back is formed at the rear end of the lock piece accommodating space 35, and this spring accommodating hole is formed. A projection insertion hole 39 is formed in the rear end wall 38. Reference numeral 31a in FIG. 13B is a reinforcing rib.

The elevating body 3 has its connecting projections 33a, 3
3a, 33b, 33b are inserted between the upper ends of the columnar leg portions 22 of the columns 2a, 2b and the shaft insertion protrusions 24, and are axially attached by using the shaft 4a, so that the upper ends of both columns 2a, 2b are attached. It is rotatably attached.

A lock piece 6 is slidably arranged in the lock piece accommodating space 35 of the elevating body 3.

As shown in FIG. 15, the lock piece 6 has a long plate shape bent in a crank shape at an intermediate portion, and the front side (left side in the drawing) of the crank shape bent section 61. The lock release piece 62, the rear (right side in the figure) is the lock piece body 6
It is 3. The lock piece main body 63 is formed to be slightly wider than the lock release piece 62, has a lock hole 64 formed at the center thereof, and has a spring mounting projection 65 extending rearward from the center in the rear end width direction. It is projected integrally. Further, a lock release protrusion 66 is provided at the central portion of the lower surface of the lock piece body 63 in the width direction, in contact with the front end edge portion of the lock hole 64. Further, the lock release projection 66 has a tapered surface on the rear end side, and the rear end side inner peripheral edge 64a of the lock hole 64 also has a tapered surface. Reference numeral 67 in the drawing is a reinforcing rib.

As shown in FIGS. 1 to 7, the lock piece 6 is moved up and down by the lock piece main body 63 being slidably housed in the lock piece housing space 35 of the elevating body 3. It is attached to the body 3. At this time, the unlocking protrusion 66 of the lock piece 6 is inserted into the protrusion slide groove 37 of the elevating body 3, and the spring mounting protrusion 65 passes through the spring accommodating hole 38 of the elevating body 3 so that the tip portion thereof is located. It is inserted into the projection insertion hole 39. Then, in this state, the lock piece 6 is biased forward by the coil spring 44 which is wound around the spring mounting protrusion 65 and is housed in the spring housing hole 38, and the bent portion 61 is formed on the column 2a. The lock body 63 is prevented from coming out of the lock piece accommodation space 35 of the elevating body 3 by coming into contact with the lock piece locking projection 26 (see FIGS. 7 and 8). The release piece 62 projects forward from the front end of the lifting body 3.

The biasing force of the lock piece 6 by the coil spring 44 is the torsion spring 4 described above.
It is set to be weaker than the urging force of the columns 2a, 2b by 1, 41.

With the above structure, the pop-up unit of this embodiment has a four-point link mechanism composed of the base body 1, both columns 2a and 2b, and the lifting body 3.
As the a and 2b rotate, the elevating body 3 moves up and down. In this case, in the pop-up unit of this embodiment, as shown in FIGS.
A piston type air damper 7 is arranged between the shaft body 4 connecting the rear support 2b and the base body 1 and the connecting shaft 25 provided on the front support 2a.
Thus, the lifting motion of the lifting / lowering body 3 due to the rotation of the columns 2a and 2b is braked, and the lifting motion is slowly performed.

The pop-up unit of this embodiment is
As described above, it is incorporated between the cover b of the center console box a shown in FIG. 23 and the cover e thereof. As shown in FIGS. The base body 1 is fixed to the lid body b by screwing a screw through the lid body 1 into the screw fastening convex portion 14, and the cover e is placed on the elevating body 3 and the mounting piece 32.
The cover e is attached to the lifting body 3 by screwing a screw into the cover e through the screw hole of
And a cover e. At this time, the tip of the unlocking piece 62 of the lock piece 6 projects outside the cover e from a through hole provided in the front end of the cover e.

As shown in FIG. 5, the locking claws of the locking projections 19 are normally kept in a folded state in which the support columns 2a, 2b are collapsed on the base body 1 against the biasing force of the torsion springs 41, 41. 19a engages with the lock hole 64 of the lock piece 6 and is locked (FIGS. 1, 3, 5, 7).
reference).

From this state, when the lifting / lowering body 3 is lifted to be used as an armrest, the lock releasing piece 62 is used.
Press p ₁ . Then, as shown in FIG. 9 (A),
The lock piece 6 slides backward (to the right in the figure), the engagement state between the lock hole 64 provided in the lock piece 6 and the lock claw 19a of the lock projection 19 is released, and the lock state is released. To be done. As a result, both columns 2a and 2b
Is rotated in the standing direction by the urging force of the torsion springs 41, 41, the lifting body 3 is lifted by the action of the link mechanism, and as shown in FIG.
Forward when 2b rotates to a predetermined angle (left side in the figure)
The tip end of the lock body 5 attached to the column 2 a of the above abuts on the lower surface of the front end portion of the elevating body 3. From this state, the support columns 2a and 2b are further rotated in the standing direction by the urging force of the torsion springs 41 and 41, and the lock body 5 is moved to the torsion spring 43 as the lifting body 3 is further raised. When the lock claws 54, 54, 54 at the tip end slide backward on the lower surface of the lifting body 3 while rotating downward against the urging force, and the columns 2a, 2b rotate upright. The abutment step portions 21 and 21 of the columns 2a and 2b at the time of abutment abut on the locking step portions 16 and 16 at the time of abutment of the base 1 to stop the rotational movement thereof, and at this time, the locks of the lock body 5 are locked. The claws 54, 54, 54 reach the lower surface side of the lock holes (lock recesses) 34a, 34b, 34a of the lifting body 3, respectively, and the biasing force of the torsion spring 43 causes the lock body 5 to rotate upward to lock the lock. Claws 54,54,5
Are the lock holes (lock recesses) 34a, 34, respectively.
It engages with b and 34a (see FIG. 8). As a result, as shown in FIGS. 2, 4, 6 and 8, both columns 2a, 2
b is upright, and the lifting / lowering body 3 is locked in a pop-up state in which it is lifted from the base 1.

The torsion springs 41, 4 are
The pivotal movement of both columns 2a, 2b due to the urging force of 1 is slowed down by the damper 7, and the columns 2a, 2 are slowly moved.
b rotates, and the lifting / lowering body 3 slowly rises.

As described above, in the pop-up unit of the present embodiment, the lock claws 54, 54, 54 at the tip of the lock body 5 rotatably attached to the upper portion of the support column 2a are fitted in the lock holes of the lift body 3. Since the pop-up state is locked by engaging with 34a, 34b, 34a, the pop-up state can be securely locked without rattling.

That is, the tip end of the lock body 5 whose one end is rotatably attached to the support column 2a is engaged with the lower surface of the elevating body 3 to lock in the pop-up state, so that the lock body 5 is separated from the pivot shaft to some extent. Since the two points of the lifting body 3 and the support column 2a are connected to each other to lock the rotary motion between the lifting body 3 and the support column 2a, the lock is performed.
Even if some clearance is provided at the connecting point between the column 2a and the column 2a and the engaging point between the lock body 5 and the elevating / lowering body 3 for smooth rotation or engagement, the rattling at these points is amplified. The lifting / lowering body 3 does not rattle, and the lifting / lowering body 3 is reduced so that the lifting / lowering body 3 hardly rattles. Explaining this point in detail, in the four-point link mechanism, the relative movement distance during the link movement increases as the distance between the two points separated by the rotation point increases.
If the two points are apart from each other to some extent, the relative movement distance between the two points is larger than the relative movement distance between the two opposite sides. Therefore, even if the distance between these two points changes slightly, the distance between the two sides facing each other hardly changes. The points are connected to each other by the lock body 5, and even if some rattling occurs between these two points, the lifting body 3 and the base body 1 which come into contact with two opposite sides of the link mechanism are connected. Almost no rattling occurs between them.

Further, even if a force for pushing the lifting body 3 downward is applied, the force is amplified by the action of the lever, the closer to the rotation axis, the force is connected by the lock body 5 to the support column 2.
There is no concentration between the two points of a and the lifting body 3, and the lock body 5 constituting the locking means of this example can be formed with a much higher strength than the lock convex portion n in the conventional example. Therefore, there is no concern that the lock body 5 will be damaged, and the lock can be reliably performed in the pop-up state.

Further, in the pop-up mechanism of this embodiment, the lock body 5 formed by the torsion spring 43 is used.
As described above, the urging action of the lock body 5 does not act in the entire 180 ° rotation range of the lock body 5, but in the 0 ° to 90 ° range.
Since it is set to urge in the range of 0 ° to 0 ° to 150 °, the lock claws 54, 54, 5 of the lock body 5 are set.
4 is a lock hole (lock recess) 34a, 34 of the lifting body 3
The lock claws 54, 54, 54 are strongly pressed against the lower surface of the lifting body 3 by the contact with the lower surface of the lifting body 3 immediately before engaging with b and 34a, and the upward movement of the lifting body 3 is caused by the frictional resistance. The climbing movement is performed well without being hindered. That is, the urging force of the torsion spring 43 gradually increases by rotating the lock body 5 downward against the urging force, but in the present embodiment, the tip end portion of the lock body 5 immediately before the end of the upward movement. Since it comes into contact with the lower surface of the lifting body 3,
In a range in which the biasing force of the torsion spring 43 is relatively small, the lock body 5 rotates downward against the biasing force, so that the lifting body 3 does not generate a large resistance that hinders the upward movement. Is.

Further, from the pop-up state shown in FIGS. 2, 4, 6 and 8, the elevating body 3 is lowered to the position shown in FIGS.
To return to the folded state of 5, 7
As shown in, pressing p ₂ the unlocking piece 62 again
Then, as shown in FIG. 10A, the lock piece 6 is slid backward (to the right in the figure). As a result, the lock release protrusion 66 provided on the lock piece 6 moves rearward in the protrusion slide groove 37 of the elevating body 3 to enter the lock hole 34b and engage with the lock hole 34b. The lock release projection 66 abuts the lock claw 54 of the lock body 5, and the front end of the lock body 5 is pushed downward by the action of the taper surface of the front end of the lock release projection 66 to rotate and lock. Lock claws 54, 54, 54 of the body 5
The engagement between the lock holes 34a, 34b, 34a of the lifting body 3 is released, and the locked state by the lock body 5 is released. In this state, the elevating body 3 is pressed downward, and by the action of the link mechanism, the columns 2a and 2b are pivoted rearward and pushed down to push down the elevating body 3.
As shown in (B), the lock piece 6 that has moved forward (left side in the drawing) due to the release of the pressing force p ₂
Taper part 6 formed on the inner peripheral edge of the rear end side of the lock hole 64 of
The tip end of the lock projection 19 of the base 1 is brought into contact with 4a. In this state, the elevating body 3 is further pressed down by pressing p ₃ so that the lock piece 6 is slid backward by the action of the taper portion 64a and the lock projection 19 is inserted into the lock hole 64. The lock piece 6 again slides forward by the urging force of the coil spring 44, and as shown in FIG. 7, the lock claw 19a of the lock protrusion 19 and the lock hole 64 are engaged with each other. It is locked in the folded state shown in 3, 5, and 7.

As described above, in the pop-up unit of this embodiment, the lock body 5 for locking in the pop-up state is locked by the lock release projection 66 provided on the lock piece 6 slidably provided on the elevating body 3. Since the lock body 5 is rotated by being pressed against the biasing force of the torsion spring 43, the engagement state between the lock body 5 and the elevating body 3 is released. In the pop-up state, even if a force to push down the lifting body 3 is applied, the sliding movement of the lock piece 6 is not hindered, and the locked state can be released easily and reliably.

That is, in the pop-up unit of this embodiment, the lock piece 6 is slid as described above.
The lock release projection 66 protruding from the lock piece 6 is brought into contact with the tip end side of the lock body 5 to press the lock body 5 downward, thereby rotating the lock body 5 against the biasing force. By moving, the lock claw 5 at the tip of the lock body 5 is moved.
4, 54, 54 and the lock hole (lock recess) 3 of the lifting body 3
4a, 34b, 34a are released from the engaged state and the locked state is released. Therefore, even if a force to push down the lifting / lowering body 3 is applied, the lock action is performed by the lock body 5, and the lock piece 6 for unlocking is not involved in the locking action at all. The sliding motion of the lock piece 6 is not hindered by the force of pushing down the lock piece 3, and the lock piece 6 can be smoothly slid to unlock easily and reliably.

In the pop-up unit of this embodiment, as described above, the urging force of the coil spring 44 for urging the lock piece 6 in the forward sliding direction urges the columns 2a and 2b in the upright direction. Since it is set to be weaker than the biasing force of the biasing torsion springs 41, 41, the unlocking operation from the pop-up state can be performed very smoothly.

That is, the lock piece 6 is pressed p ₂ from the pop-up state to move the lock piece 6 to the coil spring 44.
Sliding rearward against the urging force of the means pushes the lifting body 3 rearward, which simultaneously generates a force for rotating the columns 2a and 2b in the direction of tilting. However, at this time, the coil spring 44
When the biasing force of the lock piece 6 by the
Before sliding backwards against this biasing force,
The torsion springs 41 are attached to the columns 2a and 2b.
A force exceeding the biasing force of 41 is applied, and the columns 2a, 2
In order to rotate b, the lock claws 54, 54, 54 of the lock body 5 and the elevating body 3 that lock the rotation are locked.
In some cases, a force may be applied to the engaging portions with the lock holes 34a, 34b, 34a, and the lock cannot be released smoothly.
However, in this embodiment, the coil spring 4 is
Since the urging force of the lock piece 6 by 4 is set to be weaker than the urging force of the support pillars 2a, 2b by the torsion springs 41, 41, the lock piece 6 is surely fixed before the force for rotating the support pillars 2a, 2b is generated. Can be slid rearward against the biasing force of the coil spring, and the unlocking operation can be performed smoothly and reliably.

As described above, according to the pop-up mechanism of the present invention used in the pop-up unit of the present embodiment, the columns 2a and 2b are erected and the lifting / lowering body 3 is in the ascending movement limit without any rattling, and the pop-up mechanism is surely secured. The lock can be locked, and the unlocking operation can be performed easily and surely from this state.

The pop-up mechanism of the present invention is not limited to the above embodiment, but can be modified appropriately. For example, as shown in FIG. 19, the lock claw 54 of the lock body 5 is provided so as to be inclined inward, and the lock hole 34 a of the elevating body 3 that engages with the lock claw 54 is provided.
Locking protrusions 34c corresponding to the inclination of the lock claw 54 are provided at the lower end edges of 34b and 34a (only the lock hole 34a is shown in the figure), and the lock claw 54 and the locking protrusion 34c are engaged with each other. As a result, the locked state in the pop-up state can be made stronger, and even if a strong force is applied to the lifting body 3 in the pop-up state, the lock claws 54, 54, 54 can lock the lock holes 34a, 34b, 34a. It is possible to reliably prevent the lock protrusion 34c from coming off, and improve the reliability of the locked state.

In this case, the lock claw 5 shown in FIG.
No. 4 makes its inclination coincident with the rotation orbit of the tip of the lock body 5, provides the above-mentioned locking convex portion 34c corresponding to this inclination, and as described above, the biasing force of the lock piece 6 by the coil spring 44. Is set to be weaker than the biasing force of the columns 2a and 2b by the torsion springs 41 and 41, so that the lock body 5 can be locked as shown by the chain line in FIG.
When the lock state is released by rotating the, the lock claw 54 can be smoothly unlocked without being caught by the locking projection 34c.

Further, as shown in FIG. 20, the lifting / lowering body 3 is attached to the lock claw 54 in the middle of the lock body 5 in FIG. 18 (A).
A tapered wall body (hereinafter referred to as a taper wall) 54a that can be inserted into the projection slide groove 37 provided on the lower surface of the lock piece 6 is provided. The taper action of can also unlock more smoothly.

Further, in the above-mentioned embodiment, the piston type air damper 7 is used as a means for controlling the ascending speed of the lifting / lowering body 3, but the air damper has the idle running section in which the damper effect is not exhibited at the initial operation, Also, the diagonal of the four-point link to which this air damper is connected does not increase in length at a constant rate from the folded state of the four-point link until it rises. The growth rate is low and increases during the final operation. Therefore, the damper effect of the air damper 7 is weak at the initial operation and becomes strong at the final operation, and the pop-up operation may be in two stages.

Therefore, in such a case, the shaft 4a connecting the elevating body 3 and the columns 2a and 2b is fixed to the connecting protrusions 33a and 33b of the elevating body 3 by press fitting and the like. By rotatably inserting through the upper ends of the columnar leg portions 22 of the columns 2a and 2b and the shaft insertion protrusion 24,
The lifting body 3 and the columns 2a and 2b are rotatably connected to each other, and in this state, both ends or one end of the shaft 4a are fastened by using push nuts 8 as shown in FIG. A certain damper effect is obtained by the frictional resistance generated between the nut 8 and the columns 2a and 2b, and the damper effect by the air damper 7 can be supplemented.

That is, the push nut 8 is as shown in FIG.
As shown in FIG. 3, the central part bulges like a dome, and the bulging part 81 has a plurality of radial notches 82 formed in a ring shape, which is made of steel having strong impact resilience. Then, push push nut 8 as shown in FIG.
As shown in FIG. 22 (B), by covering the tip end portion of the shaft 4a protruding from the side surfaces of the columns 2a and 2b and pressing the bulging portion 81 strongly p ₄ , as shown in FIG.
The bulging portion 81 is engaged with the tip of the shaft 4a in a bent state. As a result, the push nut 8 is strongly pulled on the shaft 4a, and the reaction of the push nut 8 causes the inner surface of the peripheral portion of the push nut 8 to move to the columns 2a, 2
It is in a state of being strongly pressed against b. In this case, the shaft 4a
Is fixed to the lifting body 3 as described above, so that when the lifting body 3 moves up and down, it rotates with respect to the columns 2a and 2b, and the push nut 8 rotates integrally with this rotation. However, at this time, the inner surface of the peripheral portion of the push nut 8 is the support 2a,
The side surface of 2b slides in a pressure contact state, and the frictional resistance at this time causes a damper effect. Since the damper effect due to this frictional resistance is always constant, the damper effect of the air damper 7 is favorably complemented, and a favorable and smooth pop-up movement can be reliably obtained. Further, since the push nut 8 is in a state in which the shaft 4a is pulled by the strong repulsive elasticity as described above, it is possible to prevent rattling of the shaft 4a, and the lift body 3 can be moved to the left and right front and rear. It is also possible to effectively prevent rattling in the direction.

In the above embodiment, the front end of the elevating body 3 and the support column 2a and the rear end of the elevating body 3 and the support column 2b are connected by the two shafts 4a and 4a.
You may connect with the shaft of a book. 19 to 22, the configuration other than the above is the same as that of the pop-up mechanism of the above-described embodiment, and therefore, the same reference numerals are given to the same portions and the description thereof will be omitted.

Further, instead of the piston type air damper 7, braking may be performed by a damper mechanism other than the piston type air damper such as a speed reducer using a gear, or the braking mechanism such as a damper may be omitted. . Further, the shapes and the like of the base 1, the columns 2a and 2b, the elevating body 3, the lock piece 6 and the like can be appropriately changed, and other configurations can be variously changed without departing from the gist of the present invention.

Furthermore, the pop-up mechanism of the present invention is
The pop-up mechanism of the present invention is not limited to this, and is preferably used as a lifting device for an armrest configured on a center console box of an automobile. It can be preferably used as a mechanism for changing the relative positional relationship between the base body and the parts attached to the base body, which needs to be changed.

[0067]

As described above, according to the pop-up mechanism of the present invention, the problems such as the rattling and the malfunction caused by the locking means of the conventional mechanism are eliminated, and the prop In the pop-up state in which the elevating body stands upright on the base body and is in the ascending movement limit, it can be securely locked without rattling, and the unlocking work can be easily and surely performed from this state.

[Brief description of drawings]

FIG. 1 is a plan view showing a folded state of a pop-up unit using a pop-up mechanism according to an embodiment of the present invention.

FIG. 2 is a plan view showing a pop-up state of the pop-up unit.

FIG. 3 is a bottom view showing the folded state of the pop-up unit.

FIG. 4 is a bottom view showing a pop-up state of the pop-up unit.

FIG. 5 is a side view showing a folded state of the pop-up unit.

FIG. 6 is a side view showing a pop-up state of the pop-up unit.

FIG. 7 is a cross-sectional view taken along the line AA of FIG. 1 showing the folded state of the pop-up unit.

FIG. 8 is a sectional view taken along line AA of FIG. 2 showing a pop-up state of the pop-up unit.

FIG. 9 is a partial enlarged cross-sectional view for sequentially explaining an intermediate operation of the pop-up unit when shifting from the folded state to the pop-up state.

FIG. 10 is a partially enlarged cross-sectional view for sequentially explaining an intermediate operation when the pop-up unit shifts from the pop-up state to the folded state.

11A and 11B are views showing a base constituting the pop-up unit, FIG. 11A is a plan view and FIG. 11B is a side view.

FIG. 12 shows the same substrate, (A) is a bottom view,
(B) is a sectional view.

13A and 13B show an elevating body forming the pop-up unit, FIG. 13A being a plan view and FIG. 13B being a bottom view.

FIG. 14 is a view showing the elevator body, (A) is a side view,
(B) is a sectional view.

FIG. 15 is a view showing a lock piece constituting the pop-up unit, (A) is a plan view, (B) is a bottom view,
(C) is a side view and (D) is a sectional view.

FIG. 16 is a view showing one of the columns constituting the pop-up unit, (A) is a front view, (B) is a rear view,
(C) is a side view and (D) is a sectional view taken along the line D-D of (A).

FIG. 17 is a view showing the other strut constituting the pop-up unit, (A) is a front view, (B) is a rear view,
(C) is a side view and (D) is a sectional view taken along the line D-D of (A).

FIG. 18 shows a lock body constituting the pop-up unit, (A) is a plan view, (B) is a bottom view,
(C) is a side view and (D) is a sectional view.

FIG. 19 is an enlarged cross-sectional view illustrating another aspect of the lock claw of the lock body that constitutes the pop-up mechanism.

20A and 20B are enlarged cross-sectional views illustrating another aspect of the lock body that constitutes the pop-up mechanism, where FIG. 20A is a locked state and FIG. 20B is a unlocked state.

FIG. 21 is a plan view showing an example of a push nut used in the pop-up mechanism.

22A and 22B are schematic cross-sectional views showing an example of a shaft fastening structure using the push nut, where FIG. 22A is a state before locking and FIG. 22B is a state after locking.

FIG. 23 is a perspective view showing an example of a center console box incorporating the pop-up unit.

FIG. 24 is a side view showing a folded state of a conventional pop-up mechanism with a part cut away.

FIG. 25 is a side view showing a pop-up state of the conventional pop-up mechanism with a part cut away.

FIG. 26 is an enlarged cross-sectional view illustrating a lock operation of the conventional pop-up mechanism.

[Explanation of symbols]

 1 Base 2a, 2b Strut 3 Lifting body 5 Locking body 6 Locking piece 7 Damper 8 Push nut 19 Locking protrusion 19a Locking claw 34a, 34b of locking protrusion 34c Locking protrusion (locking recess) 34c Locking protrusion 41 Torsion spring ( Energizing means) 43 Torsion spring 54 Lock claw of lock body 54a Tapered wall 64 Lock hole of lock piece

Claims (5)

[Claims] 1. A base, a plurality of struts rotatably connected to an upper surface of the base, and movably attached to the upper surface of the base, and rotatably attached to the other end of the pillar. A lifting body attached to the base, a biasing means for biasing the pillar to rotate in the standing direction, and a locking means for locking the pillar in a state of falling on the base and in a state of standing on the base. And releasing the locked state by the locking means from the folded state in which the column is tilted onto the base body and locked by the locking means, and the urging means causes the column to rotate and stand up. In this state, the elevator is locked by the locking means and the lifting body is held in a pop-up state in which it is raised from the base body, and the locked state by the locking means is released from this state,
In a pop-up mechanism in which the support means is tilted against the urging force of the urging means to be locked by the lock means in a folded state in which the support pillar is laid on the substrate, the lock means is provided on the lifting body. A plate-like lock piece having a lock release protrusion and a lock hole that is slidably attached and biased in one sliding direction, and is rotatably attached to the upper part of the column, and the tip end side is toward the elevating body side. The lock protrusion having a lock claw at the tip end, which is urged to rotate, and a lock projection having a lock claw at the tip end, the lock protrusion protruding from the upper surface of the base body. The lock claw of the lock piece engages with the lock hole of the lock piece and is locked in the folded state, and the lock piece is slid against the biasing force to lock the lock piece. The engagement between the hole and the lock projection is released, and the lock claw of the lock body is engaged with the lock recess formed on the lower surface of the elevating body to lock in the pop-up state, and the lock piece is locked. By sliding the lock piece against the biasing force, the lock release projection of the lock piece comes into contact with the tip end portion of the lock body to rotate the lock body against the biasing force. A pop-up mechanism configured to release the engagement state of the lifting body with the lock recess. 2. The pop-up mechanism according to claim 1, wherein the urging force for urging the lock piece in one slide direction is set to be weaker than the urging force of the urging means for urging the column body in the upright direction. 3. The pop-up mechanism according to claim 1, further comprising a damper device that damps the pivotal movement of the column. 4. A torsion spring is used as an urging means for urging the lock body to rotate, and the range of rotation by the urging force of the torsion spring is set to an angle of 0 to 90 to 0 to 150.degree. 2. When the rotatively erected to shift to a pop-up state, the urging force of the torsion spring is set to act immediately before the lock claw at the tip of the lock body engages with the lock recess of the lifting body. The pop-up mechanism according to any one of 3 to 3. 5. A lock claw of a lock body is provided so as to be inclined inward, and a locking projection corresponding to the slope of the lock claw is provided at a lower end edge of a lock recess formed on the lower surface of the elevating body. Item 5. The pop-up mechanism according to any one of items 1 to 4.