JP2002364233A - Hinge pin for door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hinge pin for a revolving door, which is easily detachable. SOLUTION: The hinge pin 1 is formed of a cylindrical case 3 having a flange 4 at a front end thereof, a pin 2 housed in the case in a manner reciprocating between a position in which its main body protrudes frontward from the flange 4 and a position in which its front end is buried in the flange, and a spring 12 housed in the case 3, for energizing a rear end of the pin 2 in a pin-front direction. The case 3 has a cylinder portion 5 which has a stopper 6 at a location separate from the flange 4 in a manner warping and protruding outward from the cylinder portion 5 but capable of being pressed to a cylinder peripheral portion to be housed in the same. Then, a stopper front end 9 has an inner portion which is formed inside the cylinder peripheral portion, and has a projection 9 protruding toward the flange 4. Further, the flange 4 has an opening 11 at a location facing the projection 9, and therefore a projection outer edge 9b is visible from outside through the opening 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the art of a hinge pin for a revolving door which is used by being attached to a storage box such as a locker or a bookcase, or a door or door mounting member such as a window or an entrance.

[0002]

2. Description of the Related Art FIG. 6 shows an example of a hinge pin conventionally used for a door which is opened and closed by a hinge pin mechanism. The illustrated conventional hinge pin 30 has a large diameter portion 33 at the rear end.
Cylindrical body 3 having a stepped pin 31 having a flange and a flange 35 at the front end
The pin 31 is inserted into the inner peripheral portion 37 of
A case 34 in which a parallel space slidable in the front-rear direction and a small-diameter stepped portion 38 through which the pin body 32 can be inserted and moved forward and backward at the front end thereof, and a large-diameter portion rear end of the pin 31 in the case 34 And a member 42 for locking the spring 41 at the rear end of the case, and the cylindrical portion 36 of the case has a distal end projecting outward from the cylindrical portion and within the outer periphery of the cylindrical portion. The stopper 39 is formed so that the tip end 40 of the stopper 39 can be pushed in and stored at a position away from the flange 35. Although the detailed structure of the stopper 39 is not shown, the distal end of the cylindrical portion in the vicinity of the flange of the case is cut out at a plurality of positions in parallel in the vertical direction, and only the base end portion between each pair of cutout grooves is a cylindrical body. The distal end 40 is formed so as to be bent outwardly of the cylindrical body.

As described above, when the rear end of the hinge pin is inserted into the mounting hole 44 formed in the member 43 on the side end of the door and pushed down, for example, the stopper 39 is pushed on the inner periphery of the mounting hole 44. The tip 40 is deformed and the cylindrical portion 36 of the case is formed.
When the stopper tip 40 passes through the member 43, the stopper tip 40 elastically returns to the outside of the cylindrical body 36 to be in the state shown in FIG. As a result, the hinge pin 30 is held and fixed via the member 43 in the gap between the flange 35 and the distal end 40 of the stopper 39.

In this manner, the hinge pin is mounted in the mounting hole formed in either the upper or lower end surface of the side end of the door or the end surface of the door mounting member facing the door, and the pin body 32 of the pin 31 is subjected to the spring force. When the door is pushed into the door mounting member by pushing against the pin, the pushed-in pin is pushed out by the spring force toward the pin hole formed in the mating member, and the door is turned around the pin as a fulcrum. It opens and closes.

[0005]

The above-mentioned conventional hinge pin often uses a special non-metallic material such as a synthetic resin as a material of a case, and is manufactured by a material different from a door or a door mounting member. When discarded as scrap, these parts that may cause harmful gases such as dioxin in the process of reuse must be separated and collected. However, the conventional hinge pin as described above has a structure in which the stopper 39 hinders and cannot be easily removed and removed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hinge pin having a structure in which a hinge pin can be easily removed from a mounting hole in advance when scrapping a door or the like.

[0007]

As means for solving the above-mentioned problems, the lock of the stopper of the hinge pin after being mounted may be made releasable from outside.

For this purpose, the hinge pin used for the pivotable opening and closing door has a cylindrical case having a flange at the front end, and a stroke in which the main body protrudes forward from the flange and is buried in the flange. And a spring for biasing the rear end of the pin in the front end direction in the case, and the front end of the case has a cylindrical portion at a position separated from the flange portion. From the outside of the cylindrical portion to form a stopper that can be pushed into the outer periphery of the cylindrical portion against the elastic force of itself and can be housed. A protrusion is formed, and the outer end of the protrusion is formed in a flange portion facing the protrusion so as to penetrate an opening that can be seen from the outside.

Alternatively, in the above, the protrusion formed at the tip of the stopper of the stopper formed so as to be pushed into and accommodated in the outer periphery of the cylindrical portion is extended until it reaches the inside of the opening formed through the flange, and the top of the protrusion is formed by the flange. It is configured to be interposed in the through opening of the part.

[0010] With any of the above configurations, the tip of a suitable tool such as tweezers or a screwdriver is inserted into the opening that looks into the outer end of the projection of the stopper tip from outside the flange of the hinge pin case, and the projection of the stopper tip is inserted. The stopper is pushed toward the center of the pin and elastically deformed, and the tip of the stopper is pushed into the outer periphery of the cylindrical portion to be housed so that the lock of the tip of the stopper can be released.

In the claims and the means for solving the problems, and in the following description of the embodiments, regarding the opening formed through the flange of the case, the opening through which the outer end of the projection can be seen is defined as: As described above, the opening is provided with a gap enough to allow the pointed end of an appropriate tool such as tweezers or a screwdriver inserted from the opening to come into contact with the outer end of the protrusion at the tip of the stopper. An opening having such an inward extent that the distal end of the stopper can be accommodated in the outer periphery of the cylindrical portion by an operation of pulling or pushing the projection at the distal end toward the center of the pin.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a hinge pin for a revolving door which is used by being attached to a storage box such as a locker or a bookcase, or a door or door mounting member such as a window or a doorway. FIG. 5 shows a hinge pin portion of the rotating opening / closing door of the storage box in a vertical section, and the storage box 29 includes a box body 28 having an open front and a door 2 fitted in the opening.
2 and hinge pins 1 and 1 mounted on the upper and lower sides of a side end of the door 22, and the door 22 is rotated about pins 2 and 2 protruding forward from the front ends of the hinge pins 1 and cases 3 and 3. It can be opened and closed dynamically.

1 to 3 are enlarged views of the hinge pin 1, FIG. 1 is a cross-sectional view in which a side surface and the center thereof are vertically cross-sectionally shown, FIG. 2 is a plan view, and FIG. 3 is a bottom view. FIG. 4 is an exploded perspective view showing components of the hinge pin 1. FIG. The reference numerals and member names in FIGS. 1 to 4 and 5 are all common.

In FIG. 5, one of the hinge pins 1 is formed in a mounting hole 21 formed on the door upper end member 20 side, and the other is formed on a door mounting member 23 side of a frame 27 surrounding the entire front surface of the box 28. The case 3, which is a component of a hinge pin, is mounted in each of the mounting holes 24, while the pins 2 protruding from the front end of the case are formed on the opposing opposing sides, ie, the door mounting member end 23 and the door upper end member 20, respectively. An example is shown in which the pin holes 25 and 26 are fitted. The method of mounting the hinge pin is not limited to this figure, and either case may be used, either case may be mounted on the door side, or both cases may be mounted on the door mounting member side.

The hinge pin 1 has a cylindrical hollow case 3 having a flange 4 at the front end and a cylindrical portion 5 at the rear thereof, and is housed in the case 3 so that the main body protrudes forward from the flange 4 and has a distal end. A pin 2 capable of moving forward and backward a stroke until the pin is buried in the flange, a spring 12 for urging the rear end of the pin 2 in the front end direction in the case 3, and a spring 12 at the rear end of the case 3.
The distal end of the cylindrical portion 5 of the case 3 projects outwardly from the outer periphery 5 a of the cylindrical portion 5 at a position separated from the rear surface of the flange portion 4, A stopper 6 is formed which can be pushed into and housed in the outer periphery of the cylindrical portion against its own elastic force.

Next, the detailed structure of each of the components of the hinge pin 1 will be sequentially described below. First, the pin 2 is a stepped pin having a pin main body 2a extending in a parallel axis shape having a circular cross section and a large-diameter portion 2b at one end thereof, and the other end (tip) is provided with a pin hole 25 (for mounting a door described later). (See description), the corner is cut off diagonally to make it easy to insert.

The case 3 has a flange portion 4 at the front end and a hollow cylindrical portion 5 integrated with the flange portion behind the flange portion 4, and the flange portion 4 has a narrow through hole through which the pin body 2 a of the pin 2 is inserted. In addition to forming the hole 5c, the inner surface 5b of the hollow portion of the cylindrical portion 5 matches the shape of the large-diameter portion 2b of the pin 2, and the large-diameter portion 2b of the pin 2 in which the main body 2a is inserted into the flange through hole 5c is formed by the flange. It is formed so that it can be advanced to the vicinity and the stroke until the tip of the pin 2 is buried in the flange can be moved forward and backward.

Further, the case 2 has a distal end 8 on the cylindrical portion 5 at a position separated from the rear surface of the flange portion 4.
And a stopper 6 which projects outwardly in the radial direction and which can be pushed into the outer periphery of the cylindrical portion with its tip 8 against its own elastic force,
A projection 9 is formed on the inner side of the outer periphery 5a of the distal end portion 8 of the cylindrical portion 5a toward the flange 4, while the projection 4 faces the projection.
Is formed through the opening 11 so that the tip 9a of the projection is
1 so that the outer end 9 b of the projection 9 can be seen from the opening 11, that is, the outside of the distal end side of the flange 4.

When the hinge pin is to be removed as described later in the description of the hinge pin removing method, the tip of a suitable tool such as tweezers or a screwdriver is inserted into the opening 11 so that the outer end 9 of the projection 9 at the tip of the stopper 6 is removed.
It is necessary to make contact with b. In other words, the state in which the outer end 9b of the distal end projection 9 of the stopper 6 can be seen through the opening 11 has a radial expansion in which a gap is secured in the opening 11 such that a pointed end of an appropriate tool such as tweezers or a screwdriver can be inserted. That is.

As for the width of the inside of the opening 11, the tip of the stopper is moved inward using tweezers or a screwdriver to the inside, that is, toward the center of the pin 2, so that it can be accommodated in the outer periphery of the cylindrical portion. Need to be large.

Therefore, in FIG.
At the front end of the pin main body 2a, the fan body is cut to the left and right in a fan-shape to the insertion hole 5c of the pin body 2a. However, in the case of a hinge pin having a large size, the opening 11 does not necessarily have to be continuous with the insertion hole of the pin tip 2a.
The opening 11 may be separated from the insertion hole of the pin tip 2a.

The stoppers 6 are preferably formed in a pair or more along the periphery of the cylindrical portion 5 of the case 3 from the viewpoint of stability at the time of mounting. A pair is provided at each position.

Although there are various methods for forming the stopper 6 as shown in the figure, for example, each stopper is provided on the inner and outer surfaces 5 from the front end to the rear end of the cylindrical portion 5 of the case.
a and 5b are formed and a pair of cut grooves 10 are formed at an interval equal to the width of the stopper, and the front end of a member between the grooves is cut off from the flange 4 to form a front end of an arm 7 as shown in the figure. In addition to the formation of the distal end portion 8 and the projection 9, the base end portion of the arm portion 7 can be formed with permanent deformation such that the distal end side is bent outward from the cylindrical portion.

In this case, the stopper 6 is deformed when the base portion of the arm portion 7 is integral with the cylindrical portion of the case 3 and a pressing force acts on the center of the case 3 with a force that can resist the elastic force of itself. It can be pushed and housed in the notch 10 of the cylindrical portion, and when the pushing force is released, it is elastically restored.

Next, the spring 12 is housed in the case 3 so that the front end thereof abuts on the rear end of the large diameter portion 2b of the pin 2 housed in the case 3, and the spring 12 is attached to the rear end of the case 3. The rear end is locked by the member 13 in the case 3 in a compression normal state. That is, the rear end large diameter portion 2b of the pin 2 is urged forward by the spring 12, and when the front end of the pin 2 is pushed backward, the pin can be pushed in until the front end is buried in the front end of the flange portion 4 of the case 3. is there.

The locking member 13 has an annular outer peripheral portion 14 which can be inserted into the inner peripheral portion 5b of the case 3, a narrow short convex columnar portion 15 forming an annular gap therein, and both of them are rearward. And an outer peripheral portion 14
Has a pair of parallel ridges 17, 17 along the front-back direction,
A pair of claws 16, 16, which can be pushed inward and deformed in the radial direction against the elastic force, are formed to project outward from the outer periphery.

On the other hand, a guide groove 18 through which a ridge 17 serving as a guide when the locking member 13 is pushed into the cylindrical portion is mounted on the rear end side of the case cylindrical portion 5. A pair of small windows 19 into which claws 16 for retaining are fitted, and a pair of locking members 13 are formed.

The locking member 13 pushes the rear end of the spring 12 forward from the rear end of the case 3 in a state where the rear end of the spring 12 is applied to the annular gap and the projection 17 is aligned with the guide groove 18. Then, the claw 16 is deformed and pushed inward by its own elasticity, and is elastically restored at a position where it comes into contact with the small window 19, is fitted into the small window 19, and the locking member is locked. As a result, the spring 12 is compressed, and the pin 2 can be biased forward.

The case 3 and the locking member 13 may be made of metal, but since the shape is complicated, it is costly to use metal. Then it is convenient. In the case of manufacturing with a synthetic resin, a manufacturing method that can be mass-produced such as injection molding can be used, so that manufacturing can be performed at low cost.

Next, a method of mounting and removing the hinge pin 1 described above will be described. First, in FIG. 5, the door upper end member 20 at the side end of the door is provided with a mounting hole 2 having the same shape as the cylindrical portion 5 of the case 3 of the hinge pin 1 and slightly larger than that.
1 is formed, and a pin hole 25 slightly larger than the diameter of the main body 2a of the pin 2 of the hinge pin 1 is formed in the door mounting member 23 at the end face of the door frame 27 (see FIG. 5). FIG. 1 shows the hinge pin 1 mounted on the upper part of the door 22 in FIG. 5 in an enlarged manner, and the reference numerals and the names of the members in both figures are common.

When the rear end of the hinge pin 1 is inserted into the mounting hole 21 and pushed downward, the arm 7 of the stopper 6 (FIG. 1)
Is pushed on the inner periphery of the mounting hole 21 and is elastically deformed, so that the tip end 8 of the stopper is pushed into the inside of the case cylinder 5, that is, within the outer periphery 5a. When the tip 8 of the stopper passes through the door upper end member 20, the tip 8 of the stopper elastically returns to the outside of the cylindrical body 5 and is mounted in the state shown in the figure. That is, the hinge pin 1
Is held and fixed so that the door upper end member 20 is sandwiched between the rear surface of the flange portion 4 of the case 3 and the front end 9 of the stopper 6.

The rear surface of the flange 4 of the hinge pin 1 and the stopper 6
The distance from the front end 8 of the plate is determined in advance at the time of manufacture, and a plate member (door upper end member) 20 forming the hinge pin mounting hole 21 is formed.
It is set to match the thickness of For this reason, the hinge pin 1 mounted is connected to the flange 4 and the tip 8 of the stopper 6.
Is held by a plate member (door upper end member) 20 interposed in the gap between the upper and lower surfaces, and is thereby firmly fixed.

When the door 22 is fitted into the mounting frame 27 by mounting, the tip of the pin 2 of the mounted hinge pin 1 is pushed in against the spring force to fit the door into the frame 27. Then, the pushed-in pin is pushed out by a spring force at a position corresponding to the pin hole 25 formed in the door mounting member on the other side, and fitted into the pin hole 25. As a result, the door can be opened and closed with the pin 2 as a fulcrum. Also in the case of the mounting method as shown in FIG. 5, the work can be easily performed if one of the upper and lower parts is fitted first and then the other is fitted.

That is, as is obvious from the above description, the flange 4 at the front end of the case 3 connects the hinge pin 1 to the door upper end member 20.
(Or, it is a member that plays a role of positioning and fixing the hinge pin when mounted on the door mounting member end 23 (see the mounting state of the lower hinge pin in FIG. 5). It is a member that also has a lubrication function that facilitates the pivotal opening and closing of the door by maintaining an appropriate gap between the two and maintaining a proper gap therebetween, and also enables smooth opening and closing.

On the other hand, when removing the mounted pin, first open the door and insert a finger through a hole formed in advance on the inner surface of the door or the inner wall of the box. Push down to the end face of part 4 and remove the door from the box.

The opening 11 of the flange 4 of the hinge pin 1
Insert the pointed end of an appropriate tool such as tweezers or a screwdriver into the outer end 9b of the protrusion 9 at the tip of the stopper 6,
This pin is moved inward against the elastic force of the stopper, that is, toward the center of the pin 2, and the pin 2 is moved to a position where the tip 8 of the stopper 6 crosses the mounting hole 21 and is hidden in the outer periphery of the cylindrical portion 5.
And pull it up toward you. By doing so, the hinge pin can be easily removed.

In the drawings and the above description, the projection 9 at the tip of the stopper 6 has penetrated into the opening 11 formed through the flange 4 of the case 3. However, as another form for the projection 9, although not shown, a form in which the tip of the projection does not enter the inside of the opening 11 may be used as long as the outer end 9 b of the tip projection 9 of the stopper 6 can be seen through the opening 11.

In another form of the projection and the opening facing the projection, the projection formed at the tip of the stopper on the inner side from the outer periphery of the case cylinder, and the opening formed on the flange at the position facing the projection are as described above. Although the shape is almost similar to the illustrated example, it is slightly different strictly. Therefore, in the following description of another embodiment, only the reference numerals of the corresponding members having slightly different shapes are given with parentheses.

Another embodiment of the projection (not shown), that is, the height of the projection (9) is reduced so that the top (9a) is
In the case where it does not enter the inside of the opening (11) and is located deeper than the rear surface of the flange 4, that is, on the rear side of the flange, the opening of the flange 4 is appropriately set with tweezers or a screwdriver as in the case of the above embodiment. It is sufficient that a gap is secured to the extent that the pointed end of the tool can be inserted into contact with the outer end (9a) of the projection at the tip of the stopper 6. When the pointed end of the tool is inserted into the gap and the tip 8 of the stopper is moved toward the center of the pin 2 against the elastic force of the stopper, the tip 8 of the stopper 6 crosses the mounting hole 21 so that the inside of the outer periphery of the cylindrical portion 5 It can be easily moved to a position that is hidden by.

As yet another embodiment, although not shown, an opening (reference numeral 11 in the figure) formed through the flange 4 of the case 3 so that the tip projection 9 of the stopper can be seen from the outside.
As shown in the drawings of the embodiment, unlike the opening formed to penetrate from the front end face to the rear end face of the flange portion 4 of the case, the flange portion is provided with the tip projection (9) of the stopper 6 and the projection (9). In addition to forming a space in which the stopper can be deformed and moved in the center direction, a through hole or a groove through which the stopper tip protrusion (9) can be seen may be an opening formed so as to penetrate radially from the outer edge of the flange toward the space.

In this case, for example, using a tweezer-like tool having tips that bend inward each other at the tip, the tip is inserted into an opening formed through the flange in the radial direction, and the tool tip is inserted. The stopper 6 can be easily released by contacting the tool with the outside of the protrusion at the tip of the stopper and pressing the tool inward. And, in that state, insert the tool into pin 2
By pulling up in the direction of the front end, the hinge pin can be pulled out of the mounting hole with one touch.

[0042]

The hinge pin for a door according to the present invention is automatically locked when it is attached to a door or a door mounting member and does not normally come out. However, tweezers, a screwdriver, and the like are formed in the opening formed through the flange of the hinge pin case. It is possible to remove the stopper very easily by inserting the tip of an appropriate tool, moving the protrusion at the top of the stopper toward the center of the pin, and unlocking the tip of the stopper. Therefore, when it is necessary to remove the hinge pin for sorting and recovery work or for repair work, there is no need to use a special tool, and it is also necessary to cut open or burn off the members of the mounting part as in the past. And work can be performed easily in a short time.

[Brief description of the drawings]

FIGS. 1A and 1B show an embodiment according to the present invention, wherein FIG. 1A is a side view of a hinge pin, and FIG.

FIG. 2 is a plan view of the hinge pin of FIG. 1;

FIG. 3 is a bottom view of the hinge pin of FIG. 1;

FIG. 4 is an exploded perspective view showing all components of the hinge pin shown in FIG. 1, in which a case is shown in a partial cross section.

FIG. 5 shows a longitudinal section of a hinge pin mounting portion of the storage box to which the hinge pin of FIG. 1 is mounted.

FIG. 6 is a diagram showing a conventional hinge pin as a center in a vertical section.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hinge pin 2 Pin 3 Case 4 Flange part 5 Tube part 5a Tube part outer periphery 6 Stopper 8 Stopper tip part 9 Projection 11 Opening 12 Spring 20 Door upper end member 21 Mounting hole

Claims (2)

[Claims] 1. A hinge pin used for a pivotable door, comprising: a hollow cylindrical case having a flange at a front end; a main body protruding forward from the flange at the case; A pin accommodated so as to be able to advance and retreat the stroke until it is buried in the case, and a spring for urging the rear end of the pin in the front end direction in the case, and the cylindrical portion of the case is separated from the flange portion. At the position, the tip projects outwardly from the cylinder portion and forms a stopper that can be pushed into the outer periphery of the cylinder portion against the elastic force of itself and can be housed therein, and a portion of the stopper tip portion inside the outer periphery of the cylinder portion. The door hinge pin is formed by forming a protrusion toward the flange side, and forming an opening through which the outer end of the protrusion can be viewed from the outside toward the protrusion in the flange portion facing the protrusion. 2. A cylindrical housing having a cylindrical end with a flange at the tip, the tip of which is warped outward and protrudes from the cylindrical portion, and is pushed into the outer periphery of the cylindrical portion against its own elastic force to accommodate therein. 2. The door according to claim 1, wherein a protrusion formed on an inner portion of the outer periphery of the cylindrical portion at a tip end portion of the stopper formed so as to penetrate into an opening penetratingly formed in a flange facing the door. Hinge pin.