JP2011117165A - Door check device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door check device which enables a door of a vehicle etc. to be locked at any degree of opening, and which can maintain a predetermined degree of opening of the door when the door is opened/closed in unlocking. <P>SOLUTION: First and second coiled springs 6 and 7, which are brought into pressure contact with the periphery of a rod 3 in a cylinder 5 so as to restrain the axial displacement of the cylinder, are provided in the state of being wound in mutually reverse directions. An operating lever 10 is provided on the rod in a rotationally operable manner by locking one-side ends of the first and second coiled springs. Recesses 11 and 12 are provided at a predetermined axial interval on the inner peripheral surface of the cylinder in the rear of and/or ahead of a position corresponding to a position in which the first and second coiled springs are wound. An elastic body 13, which slides in the state of being resiliently pressed against and abutting on the inner peripheral surface of the cylinder, is provided in a positionally fixed state on the rod in the rear of and/or ahead of the position in which the first and second coiled springs are wound. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a door check device that can lock a door of a vehicle or the like at any opening, and can maintain a predetermined door opening when the door is opened and closed when unlocked.

  A door of a vehicle or the like is held in an open state by a door check device, and, for example, is prevented from being closed naturally on a slope or the like due to the slope of a slope and the weight of the door. As this door check apparatus, what is shown, for example in patent document 1 is known.

  In this door check device, a lever having a raised portion on the upper surface is provided so that one end is rotatably supported on the vehicle body 1 side and the other end side is passed through a holding case attached to the door side. In the holding case, a slider that slides and displaces the upper surface of the lever according to the opening / closing operation of the door is provided by pressing the lever with an elastic body. Therefore, the elastic body is pressed and compressed when the slider rides on the raised portion from the general surface of the lever, strongly presses the slider, and when released from the raised portion, the pressure is released and returns to the original state. As a result, when the slider is positioned at the raised portion of the lever according to the opening and closing of the door, the sliding member is pressed by the elastic body and the frictional resistance with the lever increases, so the door maintains its open state. To do.

JP-A-8-210005

However, such a conventional door check device can hold the door open position at a position corresponding to the raised portion of the lever, and this door is not held by the lock, but by the frictional resistance of the raised portion. Therefore, if an external force slightly larger than the holding force due to the frictional resistance of the raised portion is applied, the door opens and closes. However, in a vehicle door, there is a case where it is desired to lock at a required opening angle position, but it cannot be locked by a conventional door check device. For example, in a care vehicle, it is desired to safely get on and off the caregiver's vehicle by locking the door opening. For this purpose, it is preferable that the door can be locked at any opening degree, but it cannot be locked by a conventional door check device.
Further, in the conventional door check device, since the protruding portion of the lever is usually two to three places due to the restriction of the lever length, the opening position of the door is maintained only in two or three stages, and the multi-stage opening position is There is a problem that the door cannot be held.

  The present invention has been made in view of such a point, and an object of the present invention is to lock the door opening angle in any of the opening and closing directions at any opening angle of the desired (desired) door. An object of the present invention is to provide a door check device capable of stably holding a predetermined door opening degree when opening and closing a door when unlocking.

In order to achieve the above-described object, a door check device according to the present invention is provided with a rod rotatably supported in the door, one end pivotally supported on the vehicle body side and the other end extending into the door. The cylinder can rotate with respect to the rod within the door, and can slide along the rod by opening and closing the door.
A first coil spring and a second coil spring, which are in contact with each other around the rod in the cylinder and restrain the axial movement of the cylinder with respect to the rod, are provided by being wound in opposite directions, and an operating lever is provided on the rod. One end of the first and second coil springs is locked so that it can be rotated,
On the inner peripheral surface of the cylinder behind and / or in front of the position corresponding to the position where the first coil spring and the second coil spring are wound, there are one recess or a plurality of recesses at predetermined intervals in the axial direction. Provided,
An elastic body that elastically presses and abuts against the inner peripheral surface of the cylinder and slides is fixed to the rear and / or front rod from the position where the first coil spring and the second coil spring are wound. Provided,
The cylinder slides on the rod by enlarging the inner diameters of the first coil spring and the second coil spring by rotating the operation lever and releasing the restraint of the rod by the first coil spring and the second coil spring. The opening and closing of the door is allowed, and at the appropriate door opening position when opening and closing the door, the expansion of the inner diameter of the first coil spring and the second coil spring is canceled by operating the operation lever, thereby sliding the cylinder with respect to the rod. To lock at the appropriate door opening position,
In opening and closing of the door when releasing the restraint of the cylinder with respect to the rod, when the cylinder slides along the rod according to the opening and closing of the door and the concave portion of the cylinder matches the elastic body of the rod, the elastic body becomes the concave portion of the cylinder. The sliding resistance in the axial direction of the cylinder is increased by fitting into the cylinder, and the door can be held at the door open position corresponding to the concave portion of the cylinder.

With this configuration, one end of the rod is pivotally supported on the vehicle body 1 side, and the other end extends into the door. The cylinder is rotatable in the door within the door, and slides along the rod when the door is opened and closed. Since it is movably mounted, the cylinder can be opened and closed by sliding (advancing and retreating) along the rod when the door is opened and closed. However, if the first coil spring and the second coil spring are in a locked state in which the rod is tightened and contacted with high frictional resistance, the cylinder is locked with respect to the rod and cannot slide (advance and retreat). It becomes impossible. On the other hand, when the operation lever is operated to rotate, the first coil spring and the second coil spring, each end of which is locked to the locking portion of the control lever, are expanded in diameter, and the first coil spring and the second coil with respect to the rod are expanded. The frictional resistance of the spring is released (unlocked), the cylinder can slide (advance and retreat) with respect to the rod, and the door can be opened and closed because it can slide along the rod. .
Also, by releasing the operating force of the operating lever, the first coil spring and the second coil spring are contracted again, and the rod position can be locked by frictional contact of the first coil spring and the second coil spring with the rod. become. In this manner, the cylinder can be moved in the axial direction with respect to the rod and the movement can be restricted only by the turning operation of the operation lever. For this reason, the opened door position can be locked at any opening angle of the door. That is, it can be locked and stopped everywhere when the door is opened and closed.

Furthermore, when the restraining force of the rod by the operation lever is released (when the lock is released), the cylinder can be slid in the axial direction with respect to the rod, so that the door can be opened and closed. When opening and closing the door at the time of unlocking, the cylinder slides along the rod according to the opening and closing of the door, and the elastic body is elastically urged against and pressed against the inner peripheral surface of the cylinder. When the concave portion of the cylinder matches the elastic body of the rod, the elastic body falls (fits) into the concave portion of the cylinder. In order to slide the cylinder in the axial direction from this position, a resistance is generated that the elastic body comes out of the recess (climbs up to the standard surface of the cylinder inner peripheral surface), so that the sliding resistance increases in the axial direction of the cylinder. Therefore, the door can be held at the door open position corresponding to the position where the elastic body of the rod fits (falls) into the concave portion of the cylinder. The holding of the door is not a lock, but can be slid with respect to the rod of the cylinder by applying an external force from the concave portion of the cylinder beyond the elastic body of the rod, and the door can be opened and closed.
In the present invention, the front means the front of the vehicle when the door is fully closed, and the rear means the rear of the vehicle when the door is fully closed.

The door check device of the present invention has the following effects.
(1) In a vehicle or the like, any opening degree of the door can be locked by a simple operation. That is, the door can be locked and stopped anywhere.
(2) The door can be locked at any opening degree in both the door opening direction and the door closing direction.
(3) When the door is opened and closed when the door is unlocked, the door can be held at a predetermined door opening.
(4) Since the door can be locked at an appropriate opening degree, it is possible to use the door as a support for the hand when getting on and off the vehicle or the like, and it is possible to get on and off slowly and safely. Therefore, it is particularly effective for getting on and off the elderly and disabled persons. Moreover, even when getting on and off in a wheelchair or the like, the opened door is locked, so that it can be safely performed.
(5) Since the door can be opened and closed when the door lock is released, it can be freely operated only by the door holding function. Therefore, a throwing door operation for closing the door at once can be performed.
(6) In the door check device of the present invention, the mechanism for locking the opening of the door and the mechanism for holding the opening of the predetermined door are provided on the same axis, so the structure is simple and inexpensive. It can be provided and can be easily assembled to the vehicle.

It is a perspective view of a door check device showing an embodiment of the invention. It is sectional drawing of the door check apparatus which shows embodiment of this invention. It is sectional drawing (a) (b) (c) explaining the effect | action of the door check apparatus which shows embodiment of this invention.

  Hereinafter, a door check device according to an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a door check device showing an embodiment of the present invention, FIG. 2 is a cross-sectional view of the door check device showing an embodiment of the present invention, and FIG. 3 shows the embodiment of the present invention. It is sectional drawing (a) (b) (c) explaining the effect | action of a door check apparatus.

  As shown in the figure, in the door check device, the rod 3 is pivotally supported 4 so that one end thereof is pivotable toward the vehicle body 1, and the other end is extended into the door 2. A cylinder 5 is rotatably provided in the door 2, and the rod 3 penetrates the cylinder 5 in the door 2, and the cylinder 5 is rotatable with respect to the rod 5. It is slidable along (can move forward and backward). In the present embodiment, the cylinder 5 includes a first bearing 8 and a second bearing 9 at a predetermined interval inside, and is rotatable with respect to the penetrating rod 3 by the first bearing 8 and the second bearing 9. It is slidably supported in the direction.

The rod 3 is in contact with the rod 3 between the first bearing 8 and the second bearing 9 in the cylinder 5 and slides (moves) in the axial direction of the cylinder 5 with respect to the rod 3. A first coil spring 6 and a second coil spring 7 to be locked are wound around each other in reverse.
The first coil spring 6 and the second coil spring 7 are in contact with the rod 3 with a strong clamping force, and lock the sliding of the cylinder 5 with respect to the rod 3 with a high frictional resistance. The cylinder 5 can slide with respect to the rod 3 by releasing (unlocking).

  In order to lock and unlock the rod, an operation lever 10 is provided on the rod 3 so as to be able to rotate by engaging one end of the first coil spring 6 and the second coil spring 7. In the present embodiment, as shown in FIG. 2, one end of each of the first coil spring 6 and the second coil spring 7 is locked to the locking step portion 10 a of the operation lever 10. Accordingly, the inner diameters of the first coil spring 6 and the second coil spring 7 are enlarged by rotating the operation lever 10, and the restriction of the first coil spring 6 and the second coil spring 7 on the rod 3 is released (locked). The first coil spring 6 and the second coil spring 7 are released (locked) by releasing (locking) the inner diameters of the first coil spring 6 and the second coil spring 7 by operating the operation lever 10. The two coil springs 13 and 14 restrain the rod 3, whereby the axial movement of the cylinder 5 is locked.

  As shown in FIG. 1, a wire 15 is connected to the operation lever 10 at an appropriate position on the door 2 as shown in FIG. 1, and the operation lever 10 is operated by operating the operation knob 16. 2 can be locked and unlocked.

  Further, in the inner peripheral surface 5a of the cylinder 5 behind the position where the first coil spring 6 and the second coil spring 7 are provided (on the right side in FIG. 2), recesses 11 and 12 that are recessed outward from the inside. Are provided at predetermined intervals in the axial direction. In the present embodiment, a case is shown in which arc-shaped concave portions 11 and 12 are annularly provided on the inner peripheral surface of the cylinder 5.

Further, the tip of the rod 3 behind the position where the first coil spring 6 and the second coil spring 7 are wound is elastically biased toward the inner peripheral surface 5a of the cylinder 5 and pressed against it. A sliding elastic body 13 is provided in a fixed position.
In the present embodiment, a leaf spring that protrudes outward and curves as the elastic body 13 is housed in a recessed groove 14 provided in the rod 3 and fixed in position.
When the cylinder 5 slides along the rod 3 according to the opening / closing of the door 2 and matches the recess 11 or 12 of the cylinder 5, the elastic body 13 falls (fits) into the recess 11 or 12, Since it is a member that increases the axial sliding resistance of the cylinder 5 with respect to the rod 3, it is elastically biased toward the inner peripheral surface 5 a of the cylinder 5 by an elastic member such as a leaf spring member, a rubber member, or a resin member. When they are in contact with each other and coincide with the recesses 11 or 12, they can be formed by dropping (fitting) into the recesses 11 or 12.

Thus, according to the door check device of the embodiment described above, one end of the rod 3 is pivotally supported 4 on the vehicle body 1 side, the other end side extends into the door 2, and the cylinder 5 is connected to the rod in the door 2. 3 is slidable along the rod 3 when the door 2 is opened and closed, so that the cylinder 5 is slid (advanced and retracted) along the rod 3 when the door 2 is opened and closed. 2 can be opened and closed. However, when the first coil spring 6 and the second coil spring 7 are in a locked state in which the rod 3 is tightened and contacted with a high frictional resistance, the cylinder 5 is locked with respect to the rod 3 and cannot slide (retract). The door 2 cannot be opened or closed. On the other hand, when the operation lever 10 is turned, the first coil spring 6 and the second coil spring 7 whose one ends are locked to the locking portions 10 a of the operation lever 10 are expanded in diameter, and the first coil spring 6 is in contact with the rod 3. The frictional resistance of the coil spring 6 and the second coil spring 7 is released (unlocked), the cylinder 5 can slide (advance and retreat) with respect to the rod 3, and slide along the rod 3 by opening and closing the door 2. Therefore, the door 2 can be opened and closed.
Further, by releasing the operation force of the operation lever 10, the first coil spring 6 and the second coil spring 7 are contracted again, and the first coil spring 6 and the second coil spring 7 are brought into frictional contact with the rod 3. The cylinder 5 can be locked. As described above, the axial movement and the movement restriction of the cylinder 5 with respect to the rod 3 can be performed only by the turning operation of the operation lever 10. For this reason, the opened door 2 position can be locked at any opening angle of the door 2. That is, it can be locked and stopped everywhere when the door 2 is opened and closed.

Further, when the cylinder 5 is unlocked with respect to the rod 3 by the operation lever 10, the cylinder 5 can slide in the axial direction with respect to the rod 3, so that the door 2 can be opened and closed. When the door 2 is opened and closed at the time of unlocking, the cylinder 5 slides (advances and retreats) along the rod 3 according to the opening and closing of the door 2, and the elastic body 13 is elastically energized against the inner peripheral surface 5 a of the cylinder 5. Thus, when the concave portion 11 or 12 of the cylinder 5 matches the elastic body 13 of the rod 3, the elastic body 13 falls (fits) into the concave portion 11 or 12 of the cylinder 5. In order to slide the cylinder 5 in the axial direction from this position, a resistance is generated that the elastic body 13 comes out of the recess 11 or 12 (climbs up to the standard surface of the inner peripheral surface 5a of the cylinder 5). The sliding resistance increases. Therefore, the open position of the door 2 can be held at the door open position corresponding to the position where the elastic body 13 of the rod 3 is fitted into the recess 11 or 12 of the cylinder 5.
The opening position of the door 2 is not locked, but can be slid with respect to the rod 3 of the cylinder 5 by applying an external force exceeding the elastic body 13 of the rod 3 from the recess 11 or 12 of the cylinder 5. 2 can be opened and closed.

FIG. 3 illustrates the operation of maintaining the open position of the door 2. FIG. 3A shows the door 2 in the fully closed state, and the cylinder 5 is positioned in front of the rod 3. Therefore, when the door 2 is opened by R1, as shown in FIG. 3 (b), the cylinder 5 moves rearward (to the right in the figure) along the rod 3 in accordance with the opening of the door 2, and the cylinder 5 The elastic body 13 falls (fits) into the recess 12 and the door 2 holds the position opened by R1. Further, when the door 2 is opened to R2, as shown in FIG. 3C, the cylinder 5 further moves rearward (rightward in the figure) along the rod 3 in accordance with the further opening of the door 2, and the cylinder 5 The elastic body 13 falls (fits) into the recess 11 and the door 2 holds the position opened by R2.
According to FIGS. 3A, 3B, and 3C, the elastic body 13 of the rod 3 matches and falls (fits) into the recess 11 or 12 of the cylinder that slides according to the opening and closing of the door 2. It can be understood well that the open position of the door 2 is held at the door open position corresponding to the above.

The above embodiment does not limit the present invention, and various modifications are allowed without departing from the spirit of the present invention.
For example, in the above embodiment, the recesses 11 and 12 provided in the cylinder 5 and the elastic body 13 of the rod 3 are provided behind the second coil spring 7, but this is provided in front of the first coil spring 6. Alternatively, it may be provided both on the rear side of the second coil spring 7 and on the front side of the first coil spring 6.
Moreover, in the said embodiment, although the recessed part of the cylinder 5 was shown in the case of two places of 11 and 12, this may be one place or three places or more. The open position of the door 2 can be held corresponding to the number of the recessed portions.
Furthermore, the shape of the recesses 11 and 12 provided in the cylinder 5 and the shape of the elastic body 13 can be modified.

The door check device of the present invention enlarges the inner diameters of the first coil spring 6 and the second coil spring 7 by rotating the operation lever 10, and the rod 3 is formed by the first coil spring 6 and the second coil spring. By releasing the restraint, the cylinder 5 is allowed to slide with respect to the rod 3 and the door can be opened and closed, and the first coil spring 6 and the first coil spring 6 and the first coil spring 6 are operated by operating the operation lever 10 at an appropriate door opening position in opening and closing the door. By releasing the expansion of the inner diameter of the two-coil spring 7, the sliding of the cylinder 5 with respect to the rod 3 is locked and can be locked at an appropriate door opening position,
When the door is opened and closed when the restraint of the cylinder 5 with respect to the rod 3 is released, the cylinder 5 slides along the rod 3 according to the opening and closing of the door, and the recesses 11 and 15 of the cylinder 5 are connected to the elastic body 13 of the rod 3. When they match, the elastic body 13 is fitted into the recess 11 or 12 of the cylinder 5 to increase the sliding resistance in the axial direction of the cylinder 5, and at the door open position corresponding to the recesses 11 and 12 of the cylinder 5. The door 2 can be held, and the door of a vehicle or the like can be locked at any opening, and the opening and closing of the door when unlocked can hold a predetermined door opening, It is most suitable for use in doors of vehicles.

DESCRIPTION OF SYMBOLS 1 Car body 2 Door 3 Rod 5 Cylinder 5a Cylinder inner peripheral surface 6 1st coil spring 7 2nd coil spring 8 1st bearing 9 2nd bearing 10 Operation lever 11, 12 Recessed part 13 Elastic body

Claims (1)

One end is pivotally supported on the vehicle body side, and the other end is inserted into a cylinder rotatably provided in the door, the cylinder is rotatable with respect to the rod in the door, and It can slide along the rod by opening and closing the door,
A first coil spring and a second coil spring, which are in contact with each other around the rod in the cylinder and restrain the axial movement of the cylinder with respect to the rod, are provided by being wound in opposite directions, and an operating lever is provided on the rod. One end of the first and second coil springs is locked so that it can be rotated,
On the inner peripheral surface of the cylinder behind and / or in front of the position corresponding to the position where the first coil spring and the second coil spring are wound, there are one recess or a plurality of recesses at predetermined intervals in the axial direction. Provided,
An elastic body that elastically presses and abuts against the inner peripheral surface of the cylinder and slides is fixed to the rear and / or front rod from the position where the first coil spring and the second coil spring are wound. Provided,
The cylinder slides on the rod by enlarging the inner diameters of the first coil spring and the second coil spring by rotating the operation lever and releasing the restraint of the rod by the first coil spring and the second coil spring. The opening and closing of the door is allowed, and at the appropriate door opening position when opening and closing the door, the expansion of the inner diameter of the first coil spring and the second coil spring is canceled by operating the operation lever, thereby sliding the cylinder with respect to the rod. To lock at the appropriate door opening position,
In opening and closing of the door when releasing the restraint of the cylinder with respect to the rod, when the cylinder slides along the rod according to the opening and closing of the door and the concave portion of the cylinder matches the elastic body of the rod, the elastic body becomes the concave portion of the cylinder. The door check device is characterized in that the sliding resistance in the axial direction of the cylinder is increased by fitting into the door, and the door can be held at the door open position corresponding to the concave portion of the cylinder.

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