JP4845896B2 - Opening and closing stay - Google Patents

Description

  The present invention relates to an opening / closing stay (hereinafter referred to as a stay) that can be disconnected by a connecting pin.

  The stay is a link mechanism in which a plurality of arm members are connected by connecting pins, and the movable body and the opening frame are fixed in order to open and hold the movable body such as a door and lid at a predetermined angle. It is used intervening between the body. However, depending on the purpose of opening the movable body, it may be necessary to open the movable body beyond a predetermined angle or to completely remove the movable body from the fixed body.

In Patent Document 1, the base end portion is connected to the fixed base plate through a fixed base plate fixed to the fixed frame body and formed with a long guide slot in the left-right direction, and a fulcrum pin that is movably inserted into the guide slot. Arm plate, bracket plate that is pivotally attached to the front end of the arm plate by a vertical pin and fixed to the door, and long in the left-right direction that is fixed to the end portion of the fixed base plate closer to the vertical pivot of the door There is disclosed a two-stage stop type stay device comprising a leaf spring and having a leaf spring formed with a first locking recess and a second locking recess in which a head of a fulcrum pin engages and disengages.
Japanese Unexamined Patent Publication No. 2000-80845 (Claim 1, FIG. 9)

  The stay of patent document 1 can change the angle when a movable body is open | released in steps. However, when the movable body is opened beyond a preset angle, or when the movable body (door) is completely removed from the fixed body (fixed frame body), the bracket plate or fixed base plate is removed from the door or fixed frame body. An operation to remove is necessary.

  In view of the above, the present invention provides a stay that can be easily disconnected by a connecting pin so that the movable body can be opened more than a predetermined angle or can be easily removed from the fixed body. For the purpose.

The present invention includes two arm members that are long in one direction and two mounting members, and one end of each of the two arm members is pivotally supported by a connecting pin and connected. In an open / close stay in which two mounting members are pivotally supported by connecting pins, respectively, on each other end opposite to one end of each member , one arm member of the three connecting pins One end that connects one end of the other arm member to the other end of the other arm member, a base end portion that is rotatably attached to one end of the one arm member, and projects from the base end portion and is positioned on the tip end side. An insertion / extraction pin having a large-diameter portion and a head portion constituted by a small-diameter portion located on the proximal end side, and another arm member is provided with an insertion hole through which the insertion / extraction pin can be inserted / extracted. Insert an insertion / extraction pin into the insertion hole, and The other arm member is rotatably supported by another arm member with respect to one arm member by inserting an insertion / extraction pin into the insertion hole, and is separated from the opposite end surface of one arm member. When the opposite end surfaces of the other arm member come into contact with each other, the rotation is restricted, and another arm member has a stopper that can be pivoted about the shaft between the one arm member and the stopper. The stopper is provided so as to sandwich another arm member, and the stopper is inserted / extracted through the first through-hole through which the large-diameter portion of the insertion / extraction pin can pass and the opening diameter connected to the first through-hole is smaller than the large-diameter portion. A second through hole larger than the small diameter portion of the pin, and when the small diameter portion is positioned in the second through hole, the insertion / extraction pin is locked to the stopper while the small diameter portion is formed in the first through hole. When it is positioned, release the stopper from the insertion / extraction pin. A torsion coil spring is provided between the other arm member and the stopper, and the small diameter portion is biased in the direction from the first through hole to the second through hole. The stopper is a pressing portion that protrudes from the side of another arm member and is operated when the small diameter portion is moved from the second through hole toward the first through hole against the biasing force of the torsion coil spring. It is formed.

In another embodiment, it is preferable to provide a protrusion that regulates the position of the stopper so that the opening edge of the second through hole does not contact the small diameter portion of the insertion / extraction pin that can be inserted / removed .

  The stay according to the present invention is configured such that at least one of the three connecting pins can be inserted and removed, and includes a stopper that is spring-biased so as to be engageable and disengageable with respect to the connectable and detachable connecting pin. Therefore, if the connecting pin is normally locked with a spring biased stopper and the stopper is moved against the spring bias to escape the connecting pin, the connection with the connecting pin is easily released. can do. It is preferable to provide the connecting pin with a large-diameter portion and a small-diameter portion because the connecting pin can be more reliably locked.

  The connecting pin is provided with a large-diameter portion and a small-diameter portion, and the stopper is provided with a first through-hole through which the large-diameter portion can pass and a second through-hole whose opening diameter is smaller than the large-diameter portion and larger than the small-diameter portion. When the connecting pin is locked, the small diameter portion is positioned in the second through hole. When a load is applied to the connecting pin, the connecting pin accidentally moves in the axial direction and the connection is released. This is preferable.

A stay 1 according to the present invention will be described with reference to the accompanying drawings. 1 is a perspective view of the stay, FIG. 2 is a plan view of the stay, and FIG. 3 is a sectional view taken along line III-III in FIG.
As shown in FIG. 1, the stay 1 includes two arm members 2, 2 that are long in one direction, and two attachment members 3, 3, and one end of each of the two arm members 2, 2. However, they are pivotally connected by a connecting pin 8 that can be inserted and removed (hereinafter referred to as an inserting / removing pin 8a). In addition, the attachment members 3 and 3 are connected to the other ends of the arm members 2 and 2 opposite to the one ends by pivotal connection pins 8 that cannot be inserted and removed.

  One of the attachment members 3 and 3 is attached to a fixed body such as the aperture frame 20, and the other is attached to a movable body (not shown) such as a lid hinged to the fixed body. When the lid or the like is opened, the stay 1 is brought into contact with the opposed end surfaces 21 and 21 of the two arm members 2 and 2, and the rotation beyond a predetermined position is restricted, so that the lid or the like is opened. Is held at a predetermined angle. On the other hand, when the lid or the like is closed, the stay 1 is folded as shown by imaginary lines 101 in FIG.

  The insertion / extraction pin 8a is erected on one of the two arm members 2 (the upper arm member 2 in FIG. 1). One of the two arm members 2 (the lower arm member 2 in FIG. 1) has an insertion hole 9 through which the insertion / extraction pin 8a can be inserted / removed, and further protrudes from the insertion hole 9 A stopper 4 that is spring-biased so as to be engaged and disengaged toward the head 13 of the insertion / extraction pin 8a is provided. In the following description, the arm member 2 on which the insertion / extraction pin 8a is erected may be referred to as an arm member 2a, and the arm member 2 to which the stopper 4 is attached may be referred to as an arm member 2b. The stopper 4 is moved against the spring bias to unlock the insertion / removal pin 8a, and the insertion / removal pin 8a is removed from the insertion hole 9, so that 2 in FIG. The connection of the arm members 2a and 2b can be released.

Details of each part of the stay 1 will be described below.
As shown in FIG. 2, the stopper 4 includes a first through hole 5 having an opening diameter through which the insertion / extraction pin 8 a can pass, and a second through hole connected to the first through hole 5 and having an opening diameter smaller than the first through hole 5. It is provided with a hole 6 and is supported by a shaft 17 so as to be rotatable with respect to the arm member 2b.
The stopper 4 is spring- biased by a torsion coil spring 7 in a direction from the first through hole 5 to the second through hole 6 (counterclockwise direction in FIG. 2). The stopper 4 preferably includes a pressing portion 10 for rotating the stopper 4 against the spring bias and a protrusion 14 for regulating the position under the spring bias.

The insertion / extraction pin 8a is attached to an arm member 2a different from the arm member 2b to which the stopper 4 is attached, and is erected in a direction orthogonal to the extending direction of the arm member 2a as shown in FIG. ing. In FIG. 3, the insertion / extraction pin 8a is represented by an outer shape without being cut.
The insertion / extraction pin 8a has a base end portion 11 attached to the arm member 2a and a head portion 13 located on the opposite side of the base end portion 11 in the axial direction of the insertion / extraction pin 8a. In the present embodiment, the base end portion 11 of the insertion / extraction pin 8a is attached to the arm member 2a so that it cannot be inserted / removed and is rotatable. The insertion / extraction pin 8a may be fixed to the arm member 2a by welding or the like, or may be attached so as to be insertable / removable.

  The insertion / extraction pin 8 a passes through the circular insertion hole 9 drilled in the arm member 2 b to which the stopper 4 is attached, and the head portion 13 projects from the insertion hole 9. The head portion 13 of the insertion / extraction pin 8a is formed with a large diameter portion 15 and a small diameter portion 16 that is smaller in diameter than the large diameter portion 15 and that is positioned adjacent to the large diameter portion 15 and close to the proximal end portion 11. Yes. The large-diameter portion 15 and the small-diameter portion 16 constitute a locking portion referred to in the claims. The first through hole 5 of the stopper 4 is formed so that the large diameter portion 15 of the insertion / extraction pin 8a can pass therethrough, and the second through hole 6 has an opening diameter smaller than the large diameter portion 15 and larger than the small diameter portion 16. It is formed in a substantially circular shape. A washer 12 through which the insertion / extraction pin 8a is inserted can be interposed between the arm members 2a and 2b.

As described above, the stopper 4 is spring- biased in the direction from the first through-hole 5 to the second through-hole 6 , so that the small diameter of the insertion / extraction pin 8a is under the spring-bias as shown in FIGS. The portion 16 is positioned and locked in the second through hole 6 of the stopper 4. From this state, when the stopper 4 is rotationally moved by pushing the pressing portion 10 of the stopper 4 against the spring bias in the direction indicated by the arrow X in FIG. Located in the through hole 5. Since the first through-hole 5 has an opening diameter through which the large-diameter portion 15 of the insertion / extraction pin 8a can pass, if the arm member 2a is pushed in the thickness direction to cause the insertion / extraction pin 8a to escape from the insertion hole 9, two The connection between the arm members 2a and 2b can be easily released.

  Further, a protrusion 14 is provided on the stopper 4 so that the opening edge of the second through hole 6 does not contact the small diameter portion 16 of the insertion / extraction pin 8 a when the stopper 4 is spring-biased, that is, the center of the second through hole 6. It is preferable that the position of the stopper 4 is regulated so that the center of the small diameter portion 16 and the center of the small diameter portion 16 substantially coincide (see FIG. 2). Thereby, wear of the small diameter part 16 of the insertion / extraction pin 8a is prevented.

As mentioned above, although demonstrated based on embodiment, the stay 1 which concerns on this invention is not limited to this, It can implement in various changes.
For example, the shape of the insertion hole 9 formed in the arm member 2 to which the stopper 4 is attached is a notch formed in the arm member 2 instead of a circle, and the opening portion of the notch is closed by the spring-biased stopper 4. By opening, it can also be set as the structure which latches the insertion / extraction pin 8a. This configuration is suitable when it is difficult to allow the insertion / extraction pin 8a to escape from the insertion hole 9 because the arm member 2 has high bending rigidity.
If the shape of the insertion hole 9 is circular as in the embodiment, it is ensured that the insertion / extraction pin 8a moves in the insertion hole 9 or comes out of the insertion hole 9 when a load is applied to the stay 1. Can be prevented.
Alternatively, the insertion / extraction pin 8 a can be erected on the attachment member 3, and the stopper 4 can be provided on the arm member 2 connected to the attachment member 3.

The perspective view of a stay. Plan of stay III-III sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stay 2 Arm member 3 Mounting member 4 Stopper 5 1st through-hole 6 2nd through-hole 8 Connecting pin 9 Insertion hole 13 Head 14 Protrusion 15 Large diameter part 16 Small diameter part

Claims (2)

Comprising two arm members that are long in one direction and two mounting members;
One end of each of the two arm members is pivotally connected by a connecting pin,
In the opening and closing stay in which the two attachment members are pivotally supported by connection pins, respectively, on each other end located on the opposite side of the one end of each of the two arm members,
Of the three connecting pins , one connecting one end of the one arm member and one end of the other arm member is rotatably attached to one end of the one arm member. An insertion / extraction pin comprising a base end portion, and a head configured by a large diameter portion projecting from the base end portion and positioned on the distal end side and a small diameter portion positioned on the base end portion side,
In the other arm member, an insertion hole into which the insertion / extraction pin can be inserted / extracted is drilled, and the insertion / extraction pin is inserted into the insertion hole,
The one arm member and the other arm member can rotate the other arm member relative to the one arm member by inserting the insertion / extraction pin into the insertion hole. When the opposite end surface of the one arm member and the opposite end surface of the other arm member abut against each other, the rotation is restricted,
The other arm member is provided with a stopper that can pivot about a shaft so that the other arm member is sandwiched between the arm member and the stopper.
The stopper includes a first through-hole through which the large-diameter portion of the insertion / extraction pin can pass, and a second opening that is connected to the first through-hole and has an opening diameter smaller than the large-diameter portion and larger than the small-diameter portion of the insertion / extraction pin. With through holes,
When the small diameter portion is positioned in the second through hole, the insertion / extraction pin is engaged with the stopper while the small diameter portion is positioned in the first through hole. A locking portion for releasing the locking of the stopper with respect to the pin is formed,
Between the other arm member and the stopper, a torsion coil spring that biases the small diameter portion in a direction from the first through hole toward the second through hole is provided,
A pressure that protrudes from the side of the other arm member and is operated when the small-diameter portion is moved from the second through hole toward the first through hole against the biasing force of the torsion coil spring. The stay is characterized in that a portion is formed on the stopper. The stay according to claim 1 , further comprising a protrusion for restricting a position of the stopper so that an opening edge of the second through hole does not come into contact with the small diameter portion of the insertable / removable pin .

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