JPH0643183U - Spring hinge mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] Even if the door is large, for example, opened 180 degrees or more, the door can be closed without being locked. [Structure] The opening force is switched by the main roller 3 entering into the groove 1A provided in the seat 1, and the auxiliary roller 6 facing the opening force is provided between the shaft 2 and the seat 1 and a gap therebetween is provided. While rolling inside, the shaft 2 is given a smooth rotational movement, and the verticality of the shaft 2 is maintained. For example, it is possible to provide a highly reliable one in which the door is not locked even if the door is opened widely by 180 degrees or more and the closer function is surely exhibited.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a spring hinge mechanism of a hinge closer that automatically closes a door.

[0002]

[Prior art]

 As a conventional spring hinge mechanism, for example, one shown in FIG. 6 is known. The spring hinge mechanism is a cylindrical seat 101 that is integrally attached to a door frame blade 100 that is assembled to a frame, etc., and is rotatably arranged in the center of the seat 101. Then, a shaft 103 that rotates integrally with the door, a pair of rollers 104a and 104a 'that partially fit into the grooves 103a and 103a' of the shaft 103 and that move along the inner peripheral surface of the seat 101, The roller holding body 106, which is pressed against the roller 104 by the elastic force of the auxiliary spring 105 stretched between the seat 101 and the seat 101, is installed between the seat 101 and the shaft 103. 102, and a main spring 107 that applies a turning force in the closing direction.

Then, when the door is opened from the closed state of the door 102 shown in FIG. 6, the shaft 103 moves integrally with the door in the same direction against the elastic force of the main spring 107. While rotating, the rollers 104a and 104a 'partially fitted in the shaft 103 also move in the same direction while rolling along the inner peripheral surface of the seat 101. Therefore, the roller holder 106 also rotates in the door opening direction against the elastic force of the spring 105.

Then, for example, when the door is opened about 50 degrees back and forth, the rollers 104a and 104a 'retreat into the grooves 101a and 101a' formed on the inner peripheral surface of the seat 101, but at this time, the rollers 104a and 104a ' , 104a ′ and the roller holder 106 stop rotating against the elastic force of the auxiliary spring 105, and only the shaft 103 rotates against the door against the elastic force of the main spring 107.

In this way, the shaft 103 is rotated, the door 102 is opened 90 degrees as shown in FIG. 7, and the stop grooves 103b and 103b 'are located at the positions of the rollers 104a and 104a' which have escaped into the grooves 101a and 101a '. When is reached, the rollers 104a and 104a 'are fitted into the grooves 103b and 103b' to be in a stopped state (due to the elastic force of the auxiliary spring 105 against the holding body 106).

Further, when the door is strongly pushed open from there, the shaft 104 alone rotates together with the door 102 while the roller 104 is still in the groove 101a, 101a '. Then, when the door is opened 180 degrees, the state shown in FIG. 8 is obtained.

[0007]

[Problems to be solved by the device]

 By the way, in the spring hinge mechanism having such a structure, the door may be further opened from the state of FIG. 8 in which the door is opened 180 degrees when the door is attached. When the shaft grooves 103a and 103a 'come into contact with the roller, the roller 104a enters the groove 103a' and the roller 104a 'enters the groove 103a.

When the door 102 is released in this state, the restoring force of each spring causes the shaft 103 to rotate in the opposite direction. At this time, the rollers 104a and 104a 'and the roller holder 106 also rotate in the same direction.

However, when the rollers 104a and 104a 'come into contact with the edge of the seat groove 101b, the rotation operation is blocked and locked as shown in FIG. That is, at this point, the door 102 cannot be closed, the door 102 remains open, and there is a drawback that the door and the spring mechanism are damaged if the door 102 is forcibly closed by hand.

Therefore, in view of the above-mentioned conventional drawbacks, the present invention surely prevents a situation in which the door cannot be closed due to being locked even if the door is greatly opened. It is an object of the present invention to provide a spring hinge mechanism capable of

[0011]

[Means for Solving the Problems]

 The spring hinge mechanism of the present invention is provided with a groove at one predetermined position on the inner peripheral surface, and has a cylindrical seat body mounted on the door frame side, and is pivoted to a central portion inside the seat body integrally mounted on the door. A freely arranged shaft, a main roller that rolls on the inner peripheral surface of the seat while partially fitting in the groove of the shaft, and an auxiliary spring that generates an elastic force toward the door closing direction. A roller holder that presses against the roller holder, a main spring that is installed between the seat and the shaft, and that applies a turning force in the door closing direction to the shaft, and a shaft that is sandwiched between the roller holder and the shaft. And an auxiliary roller that rolls between the seat and the seat.

[0012]

[Action]

 In this invention, the opening force (torque) is switched by the main roller, and the auxiliary roller which faces the opening force is located between the shaft and the seat plate, and the shaft smoothly rotates while rolling in the gap between them. It is designed to give movement and maintain the verticality of the shaft.

[0013]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a spring hinge mechanism according to the present invention. This spring hinge mechanism includes a seat 1, a shaft 2, a main roller holder 4, a main spring 5, an auxiliary roller 6, It is composed of an auxiliary spring 7. In the figure, reference numeral 8 indicates a door blade installed on the door (not shown) side, and 9 indicates a door frame blade installed on the door frame (not shown) side.

The seat 1 has a cylindrical shape and is fixed to the door frame side, and one groove 1A is provided at a predetermined position on the inner peripheral surface (in this embodiment, the door is opened about 50 degrees). It is provided. The groove 1A is formed to a depth such that the main roller 3 can freely rotate between itself and the shaft 2.

The shaft 2 is adapted to rotate integrally with the door blades 8 (that is, integral with the door), and is rotatably arranged in the center of the seat body 1. Further, the shaft 2 has first and second stop grooves 2A and 2B which temporarily stop the opening operation of the door when the door is opened approximately 90 degrees and 150 degrees, and the main roller 3 is integrated with the shaft 2. And a groove 2C that rolls on the inner peripheral surface of the seat body 1 is formed.

The main roller 3 is for switching the torque when the door is opened, and is adapted to roll on the inner peripheral surface of the seat 1 while partially fitting in the groove 2 C of the shaft 2. Is becoming. The rolling range is from the initial position shown in FIG. 1 to the position where the door opens about 50 degrees. The roller holder 4 has an arc-shaped cross section, and a slit 4A in which an auxiliary roller 6 is slidably interposed is formed in a substantially middle portion, and an auxiliary spring 7 closes the door to the main roller 3. Directional turning force is applied.

The main spring 5 is installed between the seat 1 and the shaft 2 and applies a turning force to the shaft 2 in the door closing direction. The auxiliary roller 6 serves to smoothly rotate the roller holder 4 and to maintain the verticality of the shaft 2 and the roller holder 4, and is slidable on the slit 4A of the roller holder 4. It is interposed and rolls between the seat 1 and the shaft 2. Although only one auxiliary roller is used in this embodiment, a pair of 6A and 6B may be used as shown in FIG. The auxiliary spring 7 is installed between the seat body 1 and the roller holding body 4, and applies a turning force in the door closing direction to the roller holding body 4.

Next, the operation of the spring hinge mechanism according to this embodiment will be described. When the door (door vane 8) is opened from the state when the door is closed as shown in FIG. 1, when the door is opened about 50 degrees, the main roller 3 is placed in the groove 1A of the seat 1 shown in FIG. Run away. On the other hand, during this time, the auxiliary roller 6 interposed in the slit 4A of the roller holding body 4 and facing the main roller 3 is arranged between the seat 1 and the shaft 2 while smoothing the rotational movement of the shaft 2. Roll in the gap.

Further, when the door is opened from now on, for example, opened 180 degrees, a state as shown in FIG. 3 is obtained. After that, even if the door is further opened beyond the regular opening angle (180 degrees) and the auxiliary roller 6 gets into the groove 2C, when the door is closed, it occurs when the shaft 2 rotates as shown in FIG. The pushing force pushes the groove 2C to return it to the gap between the shaft 2 and the seat 1. As a result, it is possible to effectively prevent the situation where the door is locked and cannot be closed due to the opening operation exceeding the regular opening angle.

[0020]

[Effect of device]

 As described above, according to the present invention, the opening force is switched by the main roller entering into the groove formed in the seat, and the auxiliary roller facing this is provided between the shaft and the seat. While rolling in the gap between the levers, it gives a smooth rotational movement of the shaft and maintains the verticality of the shaft. For example, even if the door is opened more than 180 degrees, the door will lock. It is possible to provide a highly reliable product that can reliably perform the closer function without being damaged.

[Brief description of drawings]

FIG. 1 is a structural view showing a spring hinge mechanism according to the present invention.

FIG. 2 is an explanatory view showing the action of the spring hinge mechanism when the door is opened 90 degrees.

FIG. 3 is an explanatory view showing the action of the spring hinge mechanism when the door is opened 180 degrees.

FIG. 4 is an explanatory view showing the action of the spring hinge mechanism showing a state when the door is opened 180 degrees or more and then closed.

FIG. 5 is a structural diagram showing a modified example of the present invention.

FIG. 6 is a schematic configuration diagram showing a conventional spring hinge mechanism.

FIG. 7 is an explanatory view showing the action of the spring hinge mechanism shown in FIG.

FIG. 8 is an explanatory view showing the operation of the spring hinge mechanism shown in FIG.

9 is an explanatory view showing the operation of the spring hinge mechanism shown in FIG.

[Explanation of symbols]

 1 Receiver 1 A Groove 2 Shaft 3 Main Roller 4 Roller Holder 5 Main Spring 6 Auxiliary Roller 7 Auxiliary Spring 8 Door Blade 9 Door Frame Blade

Claims (1)

[Scope of utility model registration request] 1. A cylindrical seat body provided with one groove at a predetermined position on the inner peripheral surface and attached to the door frame side, and integrally mounted with the door and rotatably arranged at the center of the seat body. The shaft, the main roller that rolls on the inner peripheral surface of the seat while partially fitting in the groove of the shaft, and the auxiliary spring that generates the elastic force toward the door closing direction presses against the main roller. A roller holder, a main spring that is installed between the seat and the shaft, and applies a turning force to the shaft in the door closing direction, and a shaft and the seat that are sandwiched between the roller holder. A spring hinge mechanism including an auxiliary roller that rolls between the two.