JPH01127777A - Hinge - Google Patents

Abstract

PURPOSE: To miniaturize a basic body, to simplify a whole structure and to reduce cost by providing a cam part in one of a pair of link arms and contacting it directly by a contact part of a spring arranged in the basic body. CONSTITUTION: A basic body 1, a turning body 11, and a pair of link arms 16, 21 turnably connecting the basic body 1 stored in the turning body 11 with the turning body 11 are provided. Next, a cam part 25 is formed in an end part on a basic body 1 side of the link arm 21 positioned on an outer side. A spring 26 is arranged in the basic body 1, and a pressure contact part 28 formed at one end thereof is brought into contact with the cam part 25 and is pressed. When a door 52 is closed and the turning body 11 comes into contact with the basic body 1, the cam part 25 is brought into pressure contact by the pressure contact part 28 to keep a closed condition of the door 52.

Description

[Detailed description of the invention] [Object of the invention] (Field of industrial application)
The present invention relates to a hinge for attaching to a closed body, and particularly relates to holding in a closed state a rotating body that is rotatably connected to a base body attached to an attached body via a fixture.

(Prior art) Conventionally, a rotating body was connected to the front of the base via a pair of link arms so that it could be rotated open and closed, and the base was connected with screws to a fixture that was attached to an object to be attached, such as the main body of furniture. In hinges, in order to keep a rotating body attached to a furniture door closed, a cam is attached to the end of one link arm on the base side, as described in, for example, Japanese Utility Model Application No. 61-28877. A spring is provided in the base at a position in front of the screw, and is pressed against the cam part.

(Problem to be solved by the invention) However, in the conventional hinge as described above, the spring is provided in front of the screw, which creates wasted space behind the screw within the base and makes the base large. There was a problem.

The present invention aims to solve these problems and to provide a hinge that can make the base body smaller by effectively utilizing the space inside the base body, and that can also have a simple structure and be inexpensive. This is the purpose.

[Structure of the invention]

(Means for Solving the Problems) The hinge of the present invention includes a base body 1 in the shape of a box, and a rotating body 11.
and a pair of link arms 16.21 whose both ends are pivotally attached to the front part of the base 1 and the rotary body 11, respectively, and connect the rotary body 11 to the base 1 so as to be rotatably openable and closable.
The pair of link arms 1 in this base body 1 are attached to the base body 1.
6. The rotating body 11 is held in a closed state by urging the attachment 31 which is coupled with the screw 41 passing through the rear position of the shaft attachment part of 21 and attached to the attached body 51, and one of the link arms 21. The one link arm 2 is provided with a spring 26.
1 has a cam portion 25 at the end on the base 1 side, and
The spring 26 is disposed rearward of the screw 41 within the base body 1, has a press-contact portion 28, and is located between the inner surface of the base body 1 and the screw 41 within the base body 1. The cam portion 25 of one link arm 21 or the pressure contact portion 28 of the spring 26 is positioned so that the pressure contact portion 28 is brought into direct contact with the cam portion 25.

(Function) In the hinge of the present invention, when the rotating body 11 is closed to the base body 1 while rotating the pair of link arms 16° 21, the cam portion 25 at the end of one link arm 21 on the base body 1 side comes into contact with the cam portion 25. 28 is in direct contact with the spring 26, which biases one link arm 21 in the m direction, and the rotating body 11
is held closed. In the base 1, the spring 26 is disposed behind the screw 41 that connects the base 1 to the attachment 31 that attaches the base 1 to the attached body 51, and the pressure contact portion 28 of the spring 26 or the cam of the link arm 21 By positioning the portion 25 between the inner surface of the base body 1 and the screw 41 and bringing the pressure contact portion 28 into direct contact with the cam portion 25 as described above, the space within the base body 1 can be effectively utilized.
Structure i! It is possible to downsize the base 1 without making it complicated.

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

1 is a base molded from plastic, etc., and this base 1
It is formed into a box shape with an open lower surface and front surface by an upper plate part 1a and both side plate parts 1b and 1c. Inside this base body 1, a cylindrical body 3 having a screw hole 2 inside and extending vertically and having both end faces open is integrally formed at the front part and offset to one side in the left-right direction. At the same time, a rib 4.5°6.7 extending rearward from the cylindrical body 3 toward 6Nh and the side plate portion 1b is integrally formed. Note that among the ribs 6.7 extending toward the side plate PI11b, the cylindrical body 3
A gap 8 is formed between the rib 6 and the inner surface of the side plate portion 1b.

Reference numeral 11 denotes a rotating body made of plastic or the like, and this rotating body 11 has a cap portion 12 with a negative side opening, and a pair of mounting pieces protruding from both sides of the cap portion 12. The mounting piece 13 has a through hole 14 formed therein.

Reference numeral 16 denotes a wide first link arm made by bending a metal plate, for example.
17, and the distal end thereof is rotatably supported by a support shaft 18 extending from side to side toward the back of the rear portion (lower part in FIG. 1) of the cap portion 12 of the rotating body 11. Supported. Reference numeral 21 denotes a narrow second link arm made by bending a metal plate, for example, and the base end of the second link arm is connected to a support shaft 22 extending in the left-right direction below the front end of the base body 1. a support shaft 2 which is rotatably supported by a support shaft 2 and whose tip extends in the left-right direction toward the rear opening side of the cap portion 12 of the rotating body 11;
3, it is rotatably supported.

In this way, the rotating body 11 rotates around the base 1! l1f7fl
Connected in a closed manner.

The second link arm 21 is pivotally attached to the central portion of the rotating body 11 in the left-right direction, and has a bent portion 24 in the intermediate portion, and in the base body 1, the second link arm 21 extends along the inner surface of the side plate portion 1b. It is well located. A cam portion 25 is formed at the base end portion of the second link arm 21 on the side of the base body 1 to protrude rearward, and this cam portion 25 is slidably inserted into the gap 8 within the base body 1. and is located between the side plate portion 1b and the cylindrical body 3.

Reference numeral 26 denotes a coiled torsion spring, and the torsion spring 26 has protruding press-contact parts 27 and 28 at both ends thereof, respectively, protruding in opposite directions.

The torsion spring 26 is attached to the base body 1 by means of a pin 29 inserted therein and located behind the cylindrical body 3 and fixed between both side plate portions 1b and Ic of the base body 1. A pressure contact portion 27 projecting rearward is always pressed against the inner surface of the upper plate portion 1a of the base 1, and a pressure contact portion 28 projecting forward is connected to 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-right direction. Attachment pieces 33 are formed protruding from both sides of the attachment 31, and each of these attachment pieces 33 is formed with an insertion hole (not shown). Also,
A pair of left and right walls 35, into which the lower part of the base body 1 is fitted, are protrudingly formed on the upper surface of the fixture 31. Furthermore, a through hole 36 is formed in the front part of the fixture 31 between these regulating walls 35 and faces the screw hole 2 of the base 1 from below, and the lower part of the through hole 36 is The diameter is expanded to form a recess 37. Further, on the side of this through hole 36, a cam portion 2 of the second link arm 21 is provided.
5 and a slit portion 38 into which the lower part of the pressure contact portion 28 of the spring 26 is inserted is formed.

41 is an adjustment screw, and this adjustment screw 41 is attached to the above-mentioned mounting tool 3.
1, and is screwed into the screw hole 2 of the base 1. The adjustment screw 41 has a cross-shaped groove-shaped first tool engaging portion 42 formed on one end surface, and a flange-shaped large diameter portion 43 that is fitted into the recess 37 of the fixture 31. is formed on the other end surface, and a second tool engaging portion 44 in the shape of a straight groove is formed in this large diameter portion 43.

Then, in order to couple the base body 1 to the fixture 31, as shown in FIG.
It loosely passes through the through hole 36 of the fixture 31 from the side, and then a tool such as a flathead screwdriver is engaged with the second tool engaging portion 44 of the adjusting screw 41 to rotate the adjusting screw 41 and tighten the screw of the base 1. Screw into hole 2.

In addition, the door 52 is rotatably attached to the main body 51 of furniture etc.
To do so, the rotating body 11 is attached to the door 52, and the mounting N tool 31 is attached to the main body 1. At that time, the rotating body 11 is
Embed the cap part 12 in the door 52, insert a screw into the insertion hole 14 of the mounting part 13, and attach the cap part 12 to the door 52. The mounting number is completed by attaching the mounting piece 13 to the door 52.

Further, the mounting tool 31 is attached by inserting a screw into the insertion hole of the mounting piece portion 33 and screwing it onto the main body 51 as the object to be mounted, and joining the mounting piece PB33 to the main body 51. In this state, the joint surface of the main body 51 and the top surface of the recess 37 of the fixture 31 are sandwiched between the large-diameter portion 43 of the adjusting screw 41 from the axial direction, and the adjusting screw 41 is rotated relative to the fixture 31. Although it can move, it cannot move in the axial direction. therefore,
A tool such as a Phillips screwdriver is engaged with the first tool engaging portion 42 of the adjustment screw 41 to rotate the adjustment screw 41 and move it forward and backward relative to the base 1 to move the base 1 relative to the fixture 31. By rotating the base body 1 about the support shaft 32, the angle of the base body 1 with respect to the fixture 31 can be adjusted.

In particular, as shown in FIGS. 1 and 2, each link arm 16.
21 rotates relative to the base body 1 and the rotating body 11, and when the rotating body 11 rotates to open and close, the pressure portion 28 of the spring 26 is applied to the cam portion 2 of the second link arm 21.
1-move on the edge of 5.

In particular, as shown in FIG.
The cam portion 25 is brought into contact with the lower corner 925a of the cam portion 25 from below. At this time, a force is applied to the cam portion 25 in a direction that passes above the support shaft 22 that supports the second link arm 21 on the base 1, with the point of contact between the cam portion 25 and the pressure contact portion 28 as the point of action. is applied, the second link arm 21 is urged in the closing direction, and the rotating body 11 is held in the closed state.

According to the above configuration, the base 1 has the rotating body 11 connected to the front part.
Inside, a screw 4 connecting this base body 1 to the fixture 31 is inserted.
Spring 2 that urges the second link arm 21 rearward than 1
6, the space inside the base 1 can be effectively used +IJ
The base body 1 can be made smaller, and the hinge can be made more compact. Further, the screw hole 2 of the base body 1 into which the screw 41 is screwed is deviated to the negative side in the left-right direction, and the cam portion of the second link arm 21 is inserted between the screw 41 and the inner surface of the side plate portion 1b of the base body 1. 2
Since the pressure contact part 28 of the spring 26 is brought into direct contact with the cam part 25, there is no need to interpose a separate part between the cam part 25 and the pressure contact part 28, and the structure is in a cylinder, making it possible to reduce the cost.

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 fixture 31 and the main body 1 of the furniture etc.
The adjustment screw 41 was clamped between the large diameter portion 43 of the adjustment screw 41 so that the adjustment screw 41 could not move forward or backward with respect to the fixture 31. By penetrating the through hole of the fixture and caulking it, the adjusting screw may be prevented from moving forward or backward with respect to the fixture.

(Effects of the Invention) According to the present invention, one of the link arms is located rearward of the screw that connects the base to the fixture in the base to which the rotating body is connected via a pair of link arms to the front part. Since a spring is provided to bias the rotating body and hold it in the open state, the space inside the base can be used effectively, the base can be made smaller, and the hinge can be made more compact. The cam part or pressure contact part of the spring of one link arm is positioned between the inner surface and the screw, and this pressure contact part is in direct contact with the cam part, so there is no separate body between the cam part and the pressure contact part. There is no need for any intervening parts, and the structure is in a cylinder, making it inexpensive.

[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, taken along the side plate of the base, and Fig. 2 is a sectional view of the hinge in an open state, taken along the same plane as Fig. 1. Figures 3 and 3 are cross-sectional views of the open state where the cross section passes through the same screw, and Figure 4 is a back view of the same open state. 1...Base body, 11...Rotating body, 16.21...Link arm, 25...Cam part, 26...Spring, 28...Pressure contact part, 31...Mounting tool, 41...Screw, 51... The main body of furniture, etc. as the object to which it is attached.

Claims (1)

[Claims] (1) A substantially box-shaped base body, a rotating body, and a pair of link arms having both ends pivotally attached to the front part of the base body and the rotating body, respectively, and connecting the rotating body to the base body so as to be rotatably openable and closable. a fixture that is connected to the base body with a screw passing through a rear position of the shaft attachment portion of the pair of link arms in the base body and is attached to the object to be attached; In the hinge, the one link arm has a cam portion at an end on the base side, and the spring is disposed behind the screw within the base. At the same time, the cam part of the one link arm or the pressure contact part of the spring is located between the inner surface of the base body and the screw in the base, and the pressure contact part is connected to the cam part. A hinge characterized by being brought into direct contact with.