JP2001123735A - Hinge - Google Patents

Abstract

(57) Abstract: A ratchet claw surface is composed of a plurality of substantially rectangular convex portions and concave portions extending radially from the center and arranged in parallel, and each of the plurality of convex portions and concave portions abuts each other. The surface is locked, so that the bearing body and the cam rod can be securely fixed. SOLUTION: A large-diameter stepped concave portion 8g is formed on the upper surface of a bearing body 8 and continues to a sliding hole, and a plurality of substantially rectangular convex portions extending radially from contact surfaces 11 and 12 and arranged side by side. 13a
They are formed on ratchet pawl surfaces 13 and 14 that can be engaged with each other and that are formed by 14a and concave portions 13b and 14b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge called a "gravity hinge" used for attaching a door of a public toilet or the like.

[0002]

2. Description of the Related Art Conventionally, as a hinge of this type, for example, as shown in Japanese Utility Model Laid-Open No. 4-51587, a pair of connecting members having cylindrical portions at opposite ends thereof disposed on the same axis,
A cam receiver having a receiving recess fixedly inserted into one cylindrical portion and having an inner bottom surface formed on the cam receiving surface, a bearing body inserted and fixed in the other cylindrical portion, and rotatably inserted into the receiving concave portion. And a cam rod formed with a cam surface having an end surface slidably in contact with the cam receiving surface. A shaft hole through which the cam rod is removably inserted is formed in the bearing body, and is inserted through the shaft hole of the bearing body. The part is formed on the serration shaft and the shaft hole is formed on the serration shaft hole, thereby making the relative positional relationship between the pair of connecting members freely changeable, and setting the hinge for normally open and the hinge for normally closed, It is configured such that the mounting state such as the opening position of the door can be variably set.

[0003]

However, in the case of the conventional structure, a shaft hole through which the cam rod is removably inserted is formed in the bearing body, and a portion of the bearing body inserted through the shaft hole is used as a serration shaft. The cam shaft is formed in the serration shaft hole, and the cam rod is rotated by locking the serration shaft and the serration shaft hole, and the relative position of the pair of connecting members is variably set by the rotation adjustment. The locking structure between the serration shaft and the serration shaft hole inevitably requires a certain length of the cam rod and a certain depth of the shaft hole. In addition, since the cam rod is once pulled out of the shaft hole and reinserted at the time of the change setting, there is a disadvantage that the operation of the positioning change setting may be troublesome.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve these inconveniences. According to the first aspect of the present invention, there is provided a pair of cylinders having cylindrical portions which are disposed on the same axis so as to face each other. A connecting member, a cam receiver having a receiving recess fixedly inserted into one cylindrical portion and having an inner bottom surface formed on the cam receiving surface, a bearing body inserted and fixed in the other cylindrical portion, and A cam rod that is rotatably inserted and has an end surface formed on a cam surface that slides on the cam receiving surface, a sliding hole is formed in the bearing body, and the cam rod is formed in a stepped shaft shape. A camshaft is formed at a lower portion of the cam rod so as to be rotatably and slidably inserted into the slide hole, a step end surface of the cam rod is formed on an abutting surface, and the sliding surface is formed on an upper surface of the bearing body. A large-diameter stepped recess that is continuous with the moving hole is formed, and the inner bottom surface of the stepped recess is formed as a contact surface that can contact the contact surface. A hinge formed by forming each of the abutting surfaces on a mutually-engaging ratchet claw surface comprising a plurality of substantially rectangular convex portions and concave portions which extend radially from the center and are arranged side by side. .

[0005]

1 to 17 show an embodiment of the present invention. FIGS. 1 to 11 show an embodiment in which the hinge is set to a normally-open hinge, and FIGS. It is another example of embodiment when it is set as a closing hinge.

Reference numeral 1 denotes an upper connecting member, 2 denotes a lower connecting member, which is made of stainless steel and has cylindrical portions 1a and 2a formed at its ends so as to face each other on the same axis.
Further, a plurality of screw holes 1b and 2b of counterbore on both sides are formed.

Reference numeral 3 denotes a cam receiver, which in this case is made of a synthetic resin.
Locking projection 3 fitted and locked in locking recess 1c formed in
b, and a receiving recess 5 having an inner bottom surface formed on a sloped cam receiving surface 4 composed of a bottom valley portion 4a and a bottom top portion 4b is formed inside the lower side. 9 and 14 extend through the inner surface of the insertion hole 6 in the axial direction.
A rectangular groove-shaped locking groove 7 is formed perpendicular to the plate direction of the connecting member 1 as described above, and the cam receiver 3 is inserted into the upper cylindrical portion 1a and fixed by press-fitting.

Reference numeral 8 denotes a bearing body made of a synthetic resin.
A locking projection 8b that fits and locks into a locking recess 2c formed in the cylindrical portion 2a is formed on the upper peripheral flange 8a of the bearing body 8, and is inserted into the lower cylindrical portion 1a and press-fitted. It is fixed.

Reference numeral 9 denotes a cam rod, which is made of a synthetic resin.
An inclined cam having a top 10a and a valley 10b opposed to the bottom valley 4a and the bottom apex 4b, which is rotatably inserted into the receiving recess 5 and has an upper end surface slidably in contact with the inclined cam receiving surface 4. Formed on surface 10.

In this case, a sliding hole 8c is formed in the bearing body 8, a through hole 8d is formed in the sliding hole 8c, flat surfaces 8e, 8e facing each other are formed below the through hole 8d, and the cam rod 9 is stepped. An insertion shaft portion 9a is formed in a shaft shape and is inserted in the lower part of the slide hole 8c so as to be rotatable and slidable, the step end surface is formed in the contact surface 11, and the upper surface of the bearing body 8 is formed. A large-diameter stepped recess 8g that is continuous with the sliding hole 8c is formed, and an inner bottom surface of the stepped recess 8g is formed as a contact surface 12 that can be brought into contact with the contact surface 11. A plurality of substantially square-shaped projections 13a and 14a extending radially at 18 degrees from the center and parallel to 11 and 12;
And the recesses 13b and 14b are formed on the ratchet pawl surfaces 13 and 14 which can be engaged with each other.

Reference numerals 17 and 18 denote cylindrical bodies, which are made of synthetic resin, are formed in a cylindrical shape with a bottom, and are provided on peripheral flanges 17a and 18a with locking recesses 1d and 2d formed on the cylindrical portions 1a and 2a. Locking projections 17b and 18b to be fitted and locked are formed, and insertion holes 17d and 18d are formed in the bottom plate portions 17c and 18c, and the inner surfaces thereof have the same shape as the rectangular groove-shaped locking groove 7 and have the same shape. A locking groove 19 is formed at the phase position, and a crushing convex portion 20 that can be inserted into the locking grooves 7 and 19 at the upper end of the guide rod 15 is shown in FIG.
As shown in FIG. 16, the connecting member 2 is horizontally projected in the plate direction, and the cylindrical members 17 and 18 are press-fitted to the outer ends of the cylindrical portions 1a and 2a.

Reference numerals 21 and 22 denote caps, which are made of a synthetic resin, are formed in a bowl shape, and have the above-mentioned cylindrical body 17.1.
Fitting projections 21a and 22a are formed so as to be externally fitted to the locking projections 17b and 18b formed on the base member 8, and the caps 21 and 22 are pressed into the outer ends of the cylindrical bodies 17 and 18. It is configured by fitting.

In this case, a guide rod 15 made of stainless steel is inserted through the through hole 8d of the bearing body 8, and the threaded portion 15 at a position protruding from the insertion hole 18d of the cylindrical body 18 of the guide rod 15 is provided.
A nut 15b is screwed onto the shaft a, thereby fixing the guide rod 15 to the bearing body 8 and connecting the cylindrical body 18 and the bearing body 8 to each other. A hole-shaped guide hole 16 is formed, the guide rod 15 is formed in a stepped shaft shape, and a step surface 16 a of the guide hole 16 and a step surface 15 of the guide rod 15 are formed.
c is formed on a stopper surface that can contact each other.

Since this embodiment has the above configuration,
As shown in FIG. 7, when the hinge is set to a normally-open hinge used for a public toilet, the cap 21 is pulled out of the tubular body 17 in the state of FIG. With the crushing projections 20 fitted together, the cylindrical body 17 is
a, and the cylindrical portion 1a and the cam receiver 3 are inserted into the locking grooves 7 formed in the cam receiver 3 so that the crushing projections 20 of the cam rod 9 are formed.
With the cam rod 9
In this state, the cam rod 9 is moved to the stepped surface 16a.
c is lifted on the guide rod 15 until it abuts on the guide rod 15, the ratchet pawl surface 13 is separated from the ratchet pawl surface 14, and the cam rod 9 is rotated in this freely rotatable state, as shown in FIG. With reference to the plate direction of the member 2, the top 10a and the valley 10b are rotated in a direction of an angle θ formed with the upper connection member 1 when the door D is stopped in the open stop state. The guide rod 9 is pushed downward on the guide rod 15, and the ratchet pawl surface 13 is brought into contact with the ratchet pawl surface 14 so as to bite each other, whereby the cam rod 9 is turned with respect to the bearing body 8 to a position which becomes a normally closed hinge. In this case, the ratchet pawl surfaces 13 and 14 are composed of a plurality of substantially rectangular convex portions 13a and 14a and concave portions 13a and 14b which extend radially from the center and are arranged side by side. With multiple convex and concave parts The contact surfaces 11 and 12 are locked, the bearing body 8 and the cam rod 9 are securely fixed, and the cylindrical portion 1a and the cam receiver 3 are again formed in the locking groove 7 formed in the cam receiver 3. With the crushing projection 20 of the cam rod 9 being fitted to the cylindrical body 17, the cylindrical body 17 is inserted downward. 1
a, and the cap 21 is fitted to the cylindrical body 17, and the hinge connection member 1 set as the normally-open hinge is attached to the door D, and the connection member 2 is attached to a door frame or other attachment member. M.

However, normally, as shown in FIGS. 8 and 9,
The door D is in an open state, and when the door D is closed and rotated counterclockwise in the figure, as shown in FIGS. 10 and 11, the door D is in a closed state, and at this time, the cylindrical portion 1a and the door D are cam receiving surfaces. 4 and cam surface 1
As a result, the closed state is maintained by a slide key between the door D and the mounting member M or the like.

When the slide key is removed, the door D
When the door is lowered by the end face cam action between the cam receiving surface 4 and the cam surface 10 and the weight of the door, the door is closed and pivoted clockwise, thereby automatically returning to the open state in FIGS.

FIGS. 12 to 17 show another embodiment in which the hinge for normally closing is set as shown in FIG. 12. In this case,
In the same manner as above, the ratchet pawl surface 13 is separated from the ratchet pawl surface 14, and the cam rod 9
Is rotated so that the top 10a and the valley 10b are positioned in the plate direction of the lower connecting member 2 as shown in FIG. 13, and the cam rod 9 is turned downward on the guide rod 15 in this setting state. Pushing, the ratchet claw surface 13 abuts on the ratchet claw surface 14 and engages with each other, whereby the lower connection member 1 and the upper connection member 2 can be set as a normally-closed hinge in the same vertical direction, Connect the hinge connecting member 1 set to the normally closed hinge to the door D
And the connection member 2 is attached to an attachment member M such as a door frame.

In the normal state, the door D is in the closed state as shown in FIGS. 14 and 15, and when the door D is opened and rotated counterclockwise in the figure, the door D is opened as shown in FIGS. At this time, the cylindrical portion 1a and the door D rise while rotating due to the end cam action between the cam receiving surface 4 and the cam surface 10.

When the user releases his / her hand from the door D, the door D closes and rotates clockwise while descending due to the end surface cam action between the cam receiving surface 4 and the cam surface 10 and the weight of the door. 16 and the closed state of FIG.

Accordingly, the cam rod 9 is disposed on the bearing body 8 so as to be rotatable and slidable in the axial direction, and the abutment surfaces 11 and 12 are formed which can abut each other on the bearing body 8 and the cam rod 9. And
Since the contact surfaces 11 and 12 are formed on the ratchet pawl surfaces 13 and 14 which can be engaged with each other, the rotational position of the cam rod 9 with respect to the bearing body 8 is adjusted so that the pair of connecting members 1 and 2, the relative position can be changed, and the hinge can be easily changed to a normally open or normally closed hinge. In particular, a sliding hole 8c is formed in the bearing body, and the cam rod is formed into a stepped shaft shape. A lower end of the cam rod is formed with an insertion shaft portion 9a rotatably and slidably inserted into the slide hole 8c, a step end surface of the cam rod is formed on the contact surface 11, and the bearing body is formed. 8, a large-diameter stepped recess 8 g continuous with the sliding hole 8 c is formed, and an inner bottom surface of the stepped recess 8 g is formed on a contact surface 12 that can be brought into contact with the contact surface 11. A plurality of substantially square convex portions 13a and 14a and concave portions 13b and 14b extending in parallel from the center of the contact surface radially. Comprising mutually form the occlusal possible ratchet Tsumemen 13, 14, the ratchet Tsumemen 13 - 14
The relative positions of the bearing body 8 and the cam rod 9 can be adjusted and fixed by the mutual engagement of the cam rod 9 and the length of the cam rod and the depth of the shaft hole as compared with the locking structure between the serration shaft and the serration shaft hole. The length of the cam rod can be reduced,
It is possible to reduce the size and to slide the ratchet pawls 13 and 14 by a small amount without separating them without removing the cam rod 9 from the hole at the time of changing the setting. Can slide the ratchet claw surfaces 13 and 14 by occlusal engagement with each other only by sliding this small amount.
As a result, the operation of the positioning change setting can be performed easily, so that the workability can be improved and the cost can be reduced.

A plurality of substantially rectangular convex portions 1 extending radially from the centers of the ratchet pawl surfaces 13 and 14 and arranged in parallel.
3a and 14a and the recesses 13b and 14b, the contact surfaces 11
The locking of the bearing 12 and the cam rod 9 can be ensured.

It should be noted that the present invention is not limited to the above-described embodiment, but is designed by appropriately changing the structure.

[0023]

As described above, according to the present invention, a sliding hole is formed in a bearing body, and a cam rod is formed in a stepped shaft shape. The insertion shaft portion to be inserted is formed, the step end surface of the cam rod is formed on the contact surface, and a large-diameter step recess which is continuous with the sliding hole is formed on the upper surface of the bearing body. The inner bottom surface is formed as an abutting surface capable of abutting against the abutting surface, and each abutting surface extends radially from the center and includes a plurality of substantially rectangular convex portions and concave portions arranged side by side, which are mutually engagable. It is formed on the ratchet pawl surface, and the relative position between the bearing body and the cam rod can be adjusted and fixed by mutual engagement of the ratchet pawl surface. The length of the rod and the depth of the shaft hole can be reduced, and the overall length of the cam rod can be shortened. At the same time, without having to pull out the cam rod from the hole when changing the setting, only slide the ratchet claw surface by a small amount to separate, and after rotating adjustment, only slide this small amount. , The ratchet claw surfaces can be occlusally locked to each other, so that the operation of the positioning change setting can be easily performed, the workability can be improved, and the cost can be reduced. By forming a plurality of substantially rectangular convex portions and concave portions that extend radially and are arranged side by side, each contact surface is locked by the plural convex portions and concave portions, and the bearing body and the cam rod are fixed. Can be ensured.

As described above, the initial purpose can be sufficiently achieved.

[Brief description of the drawings]

FIG. 1 is an overall exploded perspective view of an embodiment of the present invention.

FIG. 2 is a partial plan sectional view of the embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of the embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of the embodiment of the present invention.

FIG. 5 is a partially exploded perspective view of the embodiment of the present invention.

FIG. 6 is a partial plan view of the embodiment of the present invention.

FIG. 7 is a plan view of a use state of the embodiment of the present invention.

FIG. 8 is a partially enlarged plan sectional view of a normally open state of the embodiment of the present invention.

FIG. 9 is a partially enlarged plan sectional view of a normally open state of the embodiment of the present invention.

FIG. 10 is a partially enlarged plan sectional view of a closed state according to the embodiment of the present invention.

FIG. 11 is a partially enlarged plan sectional view of a closed state according to the embodiment of the present invention.

FIG. 12 is a plan view of another use state of the embodiment of the present invention.

FIG. 13 is a partial plan sectional view of another embodiment of the present invention.

FIG. 14 is a partially enlarged plan sectional view of a closed state according to another embodiment of the present invention.

FIG. 15 is a partially enlarged plan sectional view of a closed state according to another embodiment of the present invention.

FIG. 16 is a partially enlarged plan sectional view of an open state according to another embodiment of the present invention.

FIG. 17 is a partially enlarged plan sectional view of an open state according to another embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 connection member 2 connection member 3 cam receiver 4 cam receiving surface 5 receiving recess 8 bearing 8c sliding hole 8g step recess 9 cam rod 9a insertion shaft 10 cam surface 11 contact surface 12 contact surface 13 ratchet claw surface 13a Convex part 13b Concave part 14 Ratchet claw surface 14a Convex part 14b Concave part

Claims (1)

[Claims] 1. A cam having a pair of connecting members each having a cylindrical portion disposed on the same axis so as to face each other at an end portion, and a receiving recess fixedly inserted into one of the cylindrical portions and having an inner bottom surface formed on a cam receiving surface. A receiving body, a bearing body inserted and fixed in the other cylindrical portion, and a cam rod formed on a cam surface that is rotatably inserted into the receiving recess and has an end surface slidably in contact with the cam receiving surface, A sliding hole is formed in the bearing body, the cam rod is formed in a stepped shaft shape, and an insertion shaft portion that is rotatably and slidably inserted into the sliding hole is formed below the cam rod. A step end surface of the cam rod is formed as a contact surface, and a large-diameter stepped recess is formed on the upper surface of the bearing body, which is continuous with the sliding hole, and an inner bottom surface of the stepped recess is brought into contact with the contact surface. The contact surfaces are formed on a possible contact surface, and each contact surface extends radially from the center and includes a plurality of substantially square convex portions and concave portions arranged in parallel. A hinge characterized by being formed on a matable ratchet claw surface.