JPH0559231B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a hinge for attaching a door to a body such as furniture so that it can be rotated to open and close, and in particular to a hinge for attaching a door to an object to be attached via a fitting. This invention relates to a device that holds a rotating body in an open state, which is rotatably connected to a base body.

(Prior Art) Conventionally, this type of hinge has a pair of link arms attached to the front part of the base body, as described in, for example, Japanese Utility Model Application Publication No. 61-28877 and Japanese Utility Model Publication No. 59-12369. A rotating body is connected to the rotating body through the link arm so that it can be rotated open and closed, and a mount to be attached to an object to be attached such as a furniture body is connected to the base body with a screw, and a cam is attached to the end of the one link arm on the base side. A known structure is known in which a spring is placed in front of the screw in the base and is pressed against the cam part to hold a rotating body attached to a furniture door in an open state. .

(Problems to be Solved by the Invention) In the structures described in the above-mentioned publications, the spring that comes into pressure contact with the cam portion is located in front of the screw within the base. Because they are arranged linearly at the front and rear inside the base,
Space is required in the base to place the spring in front of the screw, and there is also wasted space behind the screw, which results in the base having a longer overall length in the front-rear direction. However, there is a problem in that the base body becomes large.

The present invention aims to solve these problems by effectively utilizing the space within the base.
The spring that presses against the cam part and the screw that attaches the fixture to the base can be provided, which shortens the overall length of the base in the front-rear direction, making the base smaller overall and simplifying the structure. The purpose is to provide a hinge that can be manufactured at low cost.

(Means for solving the problem) The hinge of the present invention includes a base body 1, a rotating body 11,
A pair of link arms 16 and 21 are connected to the base body 1 by a pair of link arms 16 and 21 whose both ends are pivoted to the front end of the base body 1 and to the rotary body 11, respectively, and which connect the rotary body 11 to the base body 1 so as to be rotatably openable and closable. The pair of link arms 16 and 21 located in the base body 1 are connected by screws 41 passing through the rear positions of the shaft attachment portions, and are attached to the attached body 51, and the attachment 31 and one of the link arms 21 is biased. and a spring 26 for holding the rotating body 11 in a closed state,
The upper plate portion 1a is long in the front-rear direction and the upper plate portion 1 is
Both side plate parts 1b, 1 facing both ends in the width direction of a
cylindrical shape having a substantially U-shaped cross section, and having a vertical screw hole 2 in which the screw 41 is inserted in the upper plate portion 1a at a position offset to one side in the width direction. The body 3 is integrally formed, and the both side plate parts 1
A pin 29 is fixed between b and 1c near the cylindrical body 3, and one of the link arms 2
1 has a cam portion 25 at the end located on the base body 1 side.
The spring 26 has the pin 29 at a position deviated to the other side in the width direction of the upper plate portion 1a.
The press-contacting part 27 that protrudes toward the rear of one end is press-contacted with the inner surface of the upper plate part 1a, and the press-contact part 28 that protrudes toward the front of the other end is pressed against the inner surface of the upper plate part 1a. It is pressed into contact with the cam portion 25 of the link arm 21.

(Function) In the hinge of the present invention, a pair of link arms 1
When the rotating body 11 is closed to the base body 1 while rotating the links 6 and 21, the spring 26 whose pressure contact portion 28 is in direct contact with the cam portion 25 at the end of the one link arm 21 on the base body 1 side The arm 21 is biased toward the closing direction, and the rotating body 11 is held in the closed state.

Then, within the base body 1, a screw 4 for connecting the fixture 31 to be attached to the body 51 to be attached to the base body 1 is provided.
1 is disposed at a position offset to one side in the width direction of the upper plate portion 1a, and a spring 26 is disposed at a position offset to the other side, and one end of this spring 26 is pressed. Since the portion 27 is in pressure contact with the inner surface of the upper plate portion 1a, and the pressure contact portion 28 at the other end is in pressure contact with the cam portion 25 of one link arm 21, the rotating body 11 is reliably held in the closed state. . Further, the screws 41 and the springs 26 are disposed at positions offset from each other in the width direction of the upper plate portion 1a, and the screws 41 and the springs 26 are not disposed linearly in the front-rear direction. The space will be used effectively.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a base body made of plastic or the like, and this base body 1 has a top plate portion 1a that is long in the front-rear direction and both side plate portions 1b and 1c facing both ends of the top plate portion 1a in the width direction. It is formed into a substantially U-shaped cross section. Further, a cylindrical body 3 having a vertical screw hole 2 is integrally formed in the upper plate portion 1a at a position offset to one side in the width direction, and this vertically long cylindrical body 3 is It is formed integrally with the upper plate part 1a and both side plate parts 1b and 1c via respective ribs 4, 5, 6, and 7 extending in the front-rear direction and the left-right direction.
Incidentally, a gap 8 is formed between the rib 6, which is at the same height as the cylindrical body 3, among the ribs 6 and 7 extending toward the side plate part 1b on one side, and the inner surface of the side plate part 1b. Further, a pin 29 is located near the rear of the cylindrical body 3 and is fixedly inserted between the side plate portions 1b and 1c.

Reference numeral 11 denotes a rotating body made of plastic or the like, and this rotating body 11 has a cap portion 12 with one side open, and a pair of mounting pieces 13 formed protruding from both sides of the cap portion 12, respectively. The left and right mounting pieces 13 each have an insertion hole 14 formed therein.

Reference numeral 16 denotes a wide first link arm made by bending a metal plate, for example, and the base end of the first link arm 16 is attached to the upper side of the front end of the base body 1 with a supporting shaft in the left-right direction. 17, and its tip end is connected to the rotating body 1.
It is rotatably supported on the back side of the rear part (lower part in FIG. 1) of the cap part 12 of No. 1 by a support shaft 18 extending in the left and right direction. Reference numeral 21 designates a narrow second link arm formed by bending a metal plate, for example. The distal end portion thereof is rotatably supported on the rear opening side of the cap portion 12 of the rotating body 11 by a support shaft 23 extending in the left and right direction. The rotating body 11 is connected to the base 1 via the first and second link arms 16 and 21.
are connected so that they can be rotated to open and close.

The second link arm 21 is connected to the rotating body 11.
It is pivoted at the central part in the left-right direction, and has a bent part 24 in the middle part thereof, and is arranged in the base 1 along the inner surface of one side plate part 1b. . A cam portion 2 is provided at the base end portion of the second link arm 21 located on the base body 1 side.
The cam part 25 is slidably inserted into the gap 8 in the base body 1, and is disposed between one side plate part 1b and the cylindrical body 3. has been done.

Reference numeral 26 denotes a coil-shaped torsion spring, and this torsion spring 26 is biased at a position offset to the other side in the width direction of the upper plate portion 1a, that is, to a side opposite to the position of the cylindrical body 3. In this position, it is attached to the pin 29, and has protruding press-contact parts 27 and 28 at both ends thereof, respectively, which protrude in opposite directions. The torsion spring 26 has a press-contacting part 27 that protrudes rearward at one end thereof and is constantly pressed against the inner surface of the upper plate part 1a of the base 1, and the other end protrudes forwardly. The pressure contact portion 28 is located between the side plate portion 1b of the base body 1 and the cylindrical body 3, and is constantly pressed against the cam portion 25 of the second link arm 21.

Reference numeral 31 denotes a fixture made of plastic or the like, and the rear end of the fixture 31 is rotatably connected to the rear end of the base body 1 by a support shaft 32 extending in the left and right direction. Further, mounting pieces 33 are formed protruding from both sides of the mounting tool 31, and insertion holes (not shown) are formed in the mounting pieces 33 on both sides, respectively. Furthermore, a pair of left and right regulating walls 35 that fit between the lower portions of the base body 1 are protrudingly formed on the upper surface of the fixture 31 . Furthermore, a through hole 36 is formed at the front end of the fixture 31, located between the left and right regulating walls 35, and which communicates with the screw hole 2 of the base 1 from below. This through hole 3 is located at the bottom of 36.
A recess 37 whose diameter is larger than the cross-sectional shape of 6 is formed. A slit portion 38 is formed in a side portion of the through hole 36 into which the cam portion 25 of the second link arm 21 and the lower part of the pressure contact portion 28 of the spring 26 are inserted.

Reference numeral 41 denotes an adjustment screw, which is loosely passed through the through hole 36 of the fixture 31 and screwed into the screw hole 2 of the base 1. This adjusting screw 41 has a first cross-shaped groove at its upper end.
A tool engaging portion 42 is formed, and a flange-like large diameter portion 43 that fits into the recess 37 of the fixture 31 is formed at the lower end of the tool engaging portion 42. A second tool engaging portion 44 is formed.

Then, in order to couple the fixture 31 to the base body 1, as shown in FIG. Next, the adjustment screw 41 is rotated by engaging the second tool engaging portion 44 of the adjustment screw 41 with a tool such as a flathead screwdriver, and is screwed into the screw hole 2 of the base 1 to attach the attachment to the base 1. 31 are combined.

Further, in order to rotatably attach the door 52 to a main body 51 such as furniture, the rotating body 11 is attached to the door 52, and the mounting tool 31 is attached to the main body 51. At that time, the rotating body 11 moves the cap portion 12 to the door 5.
The rotating body 11 is attached to the door 52. Furthermore, the mounting tool 31 can be mounted by inserting a screw into the main body 51 as the object to be mounted through the insertion hole of the mounting piece portion 33 and screwing it, and by joining the mounting pieces 33 on both sides to the main body 51. Accordingly, the fixture 31 is attached to the main body 5.
Attached to 1.

In this state, the large diameter portion 43 of the adjustment screw 41 is axially clamped between the joint surface of the main body 51 and the upper surface of the recess 37 of the fixture 31, and the adjustment screw 41 is rotatable with respect to the fixture 31. However, it becomes impossible to move in the axial direction. Therefore,
A tool such as a Phillips screwdriver is engaged with the first tool engaging portion 42 of the adjusting screw 41 to tighten the adjusting screw 41.
By rotating the base body 1, the base body 1 is rotated in the vertical direction about the support shaft 32 with respect to the fixture 31,
The set angle of the base body 1 with respect to the fixture 31 is adjusted.

In particular, as shown in FIGS. 1 and 2, as the door 52 of furniture or the like is opened and closed, each link arm 16, 21 rotates with respect to the base 1 and the rotating body 11. As the movable body 11 rotates to open and close, the pressure contact portion 28 of the spring 26 slides on the edge of the cam portion 25 of the second link arm 21.

Then, as shown in FIG. 1, when the rotating body 11 is closed, the pressure contact portion 28 of the spring 26 is
The link arm 21 is pressed against the lower corner 25a of the cam portion 25 of the link arm 21 from below. At this time, the cam part 2
5, a pressing force is applied to the pressure contact portion 28 of the spring 26 in a direction passing above the support shaft 22 in the drawing, using the contact point between the cam portion 25 and the pressure contact portion 28 as the point of action, so that the second link The arm 21 is biased toward the closing direction, and the rotating body 11 is held in the closed state.

According to the above configuration, within the base body 1 which has the rotating body 11 connected to the front end, the base body 1 is attached to the mounting tool 31.
The screw 41 coupled to the second link arm 21 is screwed to the cylindrical body 3 at a position offset to one side in the width direction of the upper plate portion 1a of the base body 1.
The spring 26 that biases the screw 41 and the spring 26 are disposed on the pin 29 at a position offset to one side in the width direction of the upper plate portion 1a of the base 1, so that the screw 41 and the spring 26 It is arranged by making effective use of the space in both directions. Further, the screw hole 2 of the base body 1 into which the screw 41 is screwed is offset to one side in the width direction (horizontal direction), and a hole is located between the screw 41 and the inner surface of the side plate portion 1b of the base body 1. Since the pressure contact portion 28 of the spring 26 is brought into direct contact with the cam portion 25 of the two-link arm 21, there is no need to interpose separate parts between the cam portion 25 and the pressure contact portion 28, resulting in a simple structure. and can be done inexpensively.

In the above embodiment, the base body 1 and the fixture 31 are separate bodies, but the base body 1 and the fixture 31 are molded as one body and are rotatably connected by a thin hinge part. You may.

Further, in the above embodiment, the large diameter portion 43 of the adjusting screw 41 is sandwiched between the fixture 31 and the main body 51 of the furniture, etc., so that the adjusting screw 41 cannot be moved forward or backward with respect to the fixture 31. The adjusting screw may be screwed onto the base body, and the tip of the adjusting screw may be crimped by passing through the through hole of the fixture, so that the adjusting screw cannot be moved forward or backward with respect to the fixture.

〔Effect of the invention〕

According to the present invention, a cylindrical body having a vertically threaded hole through which a screw for coupling a fixture is inserted is integrally formed in the upper plate part of the base at a position offset to one side in the width direction, A pin is fixed near the cylindrical body between both side plate parts of the base body, and a spring is attached to the pin at a position offset to the other side in the width direction of the upper plate part of the base body. The press-contact part that protrudes toward the rear of one end is press-contacted with the inner surface of the upper plate part, and the press-contact part that protrudes toward the front of the other end is pressed between the base body and the rotating body. Since it was pressed against the cam part of one of the link arms installed in
The spring that urges the cam part of one link arm and the screw that connects the fixture to the base can be disposed by effectively utilizing the space in the width direction within the base.
For this reason, the overall length of the base body in the front and rear direction can be made shorter than when springs and screws are arranged linearly in the front and back direction of the base body, making it possible to downsize the base body as a whole, and making it possible to reduce the overall length of the hinge. It can be made compact. In addition, since the pressure contact part of the spring is directly pressed against the cam part of one link arm, there is no need to interpose a separate part between the cam part and the pressure contact part, resulting in a simple structure and low cost. can.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the hinge of the present invention in a closed state, with the cross section taken along the side plate portion of the base;
Figure 2 is a cross-sectional view of the open state taken along the same plane as Figure 1 of the above, Figure 3 is a cross-sectional view of the closed state taken along the plane passing through the screw of the above, and Figure 4 is a back view of the open state of the same. It is. 1... Base body, 1a... Upper plate part, 1b, 1c...
Both side plate parts, 2... Screw hole, 3... Cylindrical body, 11
... Rotating body, 16, 21 ... Link arm, 25
...Cam part, 26...Spring, 27, 28...Pressure contact part, 29...Pin, 31...Mounting tool, 41...Screw, 51...Body of furniture or the like as an object to be attached.

Claims (1)

[Scope of Claims] 1. A base body, a rotating body, and a pair of link arms whose front end portion of the base body and both ends are pivotally attached to the rotary body, respectively, and which connect the rotating body to the base body so as to be rotatably openable and closable. and a fixture that is coupled to the base body with a screw passing through a rear position of the shaft attachment portion of the pair of link arms located within the base body and is attached to the body to be attached, and a fixture that biases one of the link arms. a spring for holding the rotating body in a closed state, the base body having a longitudinally long upper plate portion and both side plate portions facing both ends of the upper plate portion in the width direction; It is formed in a U-shape, and the upper plate part is integrally formed with a cylindrical body having a vertical screw hole through which the screw is inserted at a position offset to one side in the width direction, and the both side plate parts are formed in a U-shape. A pin is fixed in between, located in the vicinity of the cylindrical body, one of the link arms has a cam part at the end located on the base side, and the spring is attached to the upper plate part. The press-contact part is attached to the pin at a position offset to the other side in the width direction, and the press-contact part protruding toward the rear of one end is press-contacted to the inner surface of the upper plate part, and the press-contact part is attached to the pin at a position offset to the other side in the width direction, and the press-contact part is pressed to the inner surface of the top plate part, and the press contact part is attached to the pin at a position offset to the other side in the width direction. A hinge characterized in that a pressure-contacting part protruding from the opposite side is press-contacted to a cam part of one of the link arms.