JP4989893B2 - Spring holding part - Google Patents

Description

  The present invention relates to a spring holding portion, and more particularly to a spring holding portion used for a unit that opens and closes a door such as an accessory case used in a vehicle.

  As shown in FIG. 6, the accessory case generally includes a door 1, a panel 2, a torsion spring 3, an oil damper 4, and a gear 5.

  When assembling them, first, the oil damper 4 is fixed to one side surface of the panel 2 by the claw portion, and the door 1 is inserted into the panel 2 from above. Next, the torsion spring 3 is assembled to the other side surface of the panel so that the urging force acts in the direction in which the door 1 opens, and further the gear 5 is engaged with the oil damper of the panel 2 through the through hole to the side surface of the door 1. Assemble by snap fit.

  In the accessory case having such a configuration, when the door 1 is pushed, the lock mechanism (not shown) is released, and the door 1 is opened by the torsional direction biasing force of the torsion spring 3. At that time, the door 1 does not open abruptly by the action of the oil damper 4 meshing with the gear 5, giving a profound feeling to the opening operation.

  Here, the assembly of the conventional torsion spring 3 to the panel 2 is shown in FIG. A position X indicates the initial position of the arm 7 of the torsion spring 3 before the torsion spring 3 is assembled to the panel 2, that is, in which no torsional direction biasing force is generated. The arm 7 is rotated clockwise against the biasing force of the torsion spring 3, and its end is engaged with the corner of the L-shaped and thin groove-shaped spring holding portion 6 formed on the surface of the panel 2. Let

  This assembling is performed manually, but the assembling operation is very difficult because the groove of the spring holding portion 6 that must be inserted to engage the end of the torsion spring 3 is thin. Further, since the L-shaped shape as shown in FIG. 7 is such that its end is only engaged with the corner of the groove shape, only an external force is applied in the direction of rotating the arm 7 counterclockwise. There is a possibility that the torsion spring 3 may come off. If the torsion spring 3 is removed, the door does not open smoothly and the original function cannot be achieved.

SUMMARY OF THE INVENTION In order to solve the above problems, the spring holding portion is attached to the panel, to receive the arms of the torsion spring therein, upwardly extending a first direction along the panel ; and a second protruding portion extending in a lateral direction is the second direction away from the first rib and the panel having one protrusion, the first protrusion extending upwardly from at least the second protrusion and, the second protrusions, and a lower surface for engaging the inclined surface and an arm for guiding the arm downward, and, from the first protrusion in a state where the arms are received in the spring holding portion located on the distal end side of the arm, the torsion direction of the torsion spring with arms the contact with the inner side of the first protrusion by lateral biasing force of the torsion spring contact is in a state where the spring holding portion being received Is pressed against the first rib top surface by force, the second projecting portion is characterized in that projects laterally beyond the upper arm in this state.

Further, in the first aspect according to the second aspect, the second the second protrusion, the arm is positioned at the front end side of the arm from the first protrusion in a state of being received in the spring holding portion It is characterized by extending in the horizontal direction through the ribs.

Further, in the first or second aspect, according to the third invention is characterized in that the upper surface of the first rib is slope falling in the direction of the first protrusions.

  The torsion spring can be easily assembled to the panel, and the torsion spring is not easily detached by an external force even after the assembly.

  FIG. 1 shows a spring holding portion 6 of a door opening / closing unit attached to a panel 2 and holding an arm 7 of a torsion spring 3 according to the present invention. The spring holding portion 6 has a first rib 8 and a second rib 9, the first rib 8 is a first protrusion 10 extending upward, and the second rib is a second protrusion extending laterally. 11 respectively.

  FIG. 2 shows a cross section perpendicular to the longitudinal direction of the panel 2 surface of the second rib 9. The second protrusion 11 is formed by the inclined surface 12 and the lower surface 13, and the first protrusion 10 extends at least upward from the second protrusion 11 in FIG. 2.

  Further, FIG. 3 shows a schematic view of each positional relationship when the arm 7 of the torsion spring 3 is held by the spring holding portion 6 as viewed from the door side. The first protrusion 10 suppresses the counterclockwise movement generated in the arm 7 due to the lateral biasing force 16 of the torsion spring 3, and at this time, the second protrusion 11 has at least the end of the arm 7 below it. It extends to the side as shown.

  In FIG. 1, first, the arm 7 in the same initial position as described above is rotated clockwise against the torsional direction biasing force 15 of the torsion spring 3 to straddle the first protrusion 10 from the outside. The arm 7 is moved into the spring holding portion 6. In this state, the arm 7 is in contact with the inner side of the first protrusion 10 due to the lateral biasing force 16 of the torsion spring 3 above the second protrusion 11 without substantially bending. Furthermore, in order to complete the assembly from that state, in order to move the arm 7 downward, it is necessary to straddle the second protrusion 11, but at that time, the point that is in contact with the first protrusion 10 is used as a fulcrum. The arm 7 bends, thereby generating an elastic force in a direction in which the tip of the arm 7 is pressed toward the second rib 9. However, since the upper part of the second protrusion 11 forms the inclined surface 12, the arm 7 slides along the inclined surface 12 against the elastic force that gradually increases only by applying a downward force, When the arm 7 is pushed through the slope 12, the bending force is restored at once by the elastic force, and the arm 7 does not substantially bend below the lower surface 13 and settles to the state shown in FIG. 3.

  Whereas the conventional spring holding portion 6 has to be assembled with the end of the arm 7 in its narrow groove (FIG. 7), when the spring holding portion 6 of the present invention is used, a first with sufficient space is provided. Since it is only pushed down further across the upper part of the projection part 10, an assembly is very simple.

  Further, by using the torsion spring 3 having a stronger torsional direction biasing force 15, the second projecting part can be formed only by the torsional direction biasing force 15 without pressing the torsion spring 3 in order to straddle the second projecting part 11 as described above. 11 can be crossed, and the assembly is further simplified.

  Furthermore, even if it tries to remove the assembled arm 7, it cannot be removed naturally because there is the 2nd projection part 11 only by raising the arm 7 as it is upwards. In order to straddle the second protrusion 11, the arm 7 is bent against the elastic force, and the arm 7 is bent beyond the height of the second protrusion 11, and then the torsion spring 3 is further biased in the twisting direction. It is necessary to move upward against 15 and straddle the first protrusion 10. The torsion spring 3 according to the prior art is disengaged from the spring holding portion 6 by a substantially two-dimensional operation of rotating the arm 7 against the torsional direction biasing force 15 of the torsion spring 3, whereas the present invention is 3 If the arm 7 is not moved by applying a dimensional force, the arm 7 cannot be removed, and it is clear that the structure is more difficult to come off.

  As another embodiment, in addition to the structure described above, as shown in FIG. 4, the arm 7 is attached to the torsion spring 3 in the lateral direction by making the upper surface of the first rib 8 a slope 14 that descends to the first protrusion 10. In addition to the force 16, the first protrusion 10 is pressed and a more secure assembly can be achieved.

  In the above-described embodiment, the second protrusion 11 has the second rib 9 extending laterally. As another embodiment, as shown in FIG. You may make it extend from the panel 2 directly to the side without passing through the two ribs 9.

  The spring holding portion 6 according to the present invention may be formed integrally with the panel 2 or may be manufactured and attached as a separate part.

It is an external view of the spring holding | maintenance part by this invention. It is a schematic view of a cross section perpendicular to the longitudinal direction of the panel 2 surface of the second rib 9. It is the schematic view seen from the upper direction of the spring holding | maintenance part by this invention. In FIG. 2, it is the schematic view whose upper surface of a 2nd rib is a slope. It is an external view of the spring holding | maintenance part by another embodiment of this invention. It is an assembly exploded view of the accessory case containing a torsion spring. It is a figure which shows the assembly | attachment of the conventional torsion spring.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door 2 Panel 3 Torsion spring 4 Oil damper 5 Gear 6 Spring holding part 7 Arm 8 1st rib 9 2nd rib 10 1st projection part 11 2nd projection part 12 Slope 13 Lower surface 14 Slope 15 Torsion direction urging force 16 Lateral direction Force

Claims (3)

Attached to the panel, to receive the arms of the torsion spring therein, a second direction away from the first rib and the panel having a first protrusion portion extending upwardly a first direction along the panel sideways direction A first holding portion extending at least above the second protruding portion, and the second protruding portion guides the arm downward. And a lower surface for locking the arm, and the arm is positioned on the distal end side of the arm with respect to the first protrusion in a state where the arm is received by the spring holding portion. in the state of being receptive it is pressed against the first rib top by twisting direction biasing force of the torsion spring with the inner side of the first protrusion by lateral biasing force of the torsion spring abuts the said Two protrusions spring holding portion, characterized in that projecting laterally beyond the upper arm in this state. And wherein the second protrusion, the arms are extended to the sideways direction through the second rib located on the tip side of the arm from the first protrusion in a state of being received in the spring holding portion The spring holding part according to claim 1. 3. The spring holding portion according to claim 1, wherein the upper surface of the first rib is a slope that falls in the direction of the first protrusion. 4.

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