KR19990068361A - Door hinge - Google Patents

Abstract

The present invention relates to a door hinge. Conventionally, there is a problem that it is difficult to maintain the proper opening and closing speed of the door according to the weight of the door because there is no means for adjusting the pressing force of the rolling pin for the door bracket to determine the opening and closing speed of the door. In addition, there is a problem that the torsion spring, which is weakened or damaged when used for a long time, is located inside the door frame bracket, and thus the work for replacement and repair thereof is not easy. In addition, the structure is complicated and the number of parts increases, resulting in cost increase, inefficiency of work, and productivity. Therefore, the present invention is rotatably hinged to the door frame bracket (1), the door bracket (2) having a cam surface 23 formed on one side, the rolling is elastically supported by the torsion spring (4) (4A) on the cam surface (23) In the configuration that the pin (5) abuts, the fixing means for fixing the torsion spring (4) (4A) to the outside of the door frame bracket (1); By providing a pressure adjusting means (7) to adjust the pressing force of the rolling pin (5) against the cam surface 23 of the door bracket (2) can maintain the proper opening and closing speed of the door at all times regardless of the weight of the door Replacement and repair of the torsion spring can be made easily, and the structure is simple and the number of parts is small, thereby reducing the cost and improving the productivity.

Description

Door hinge

The present invention relates to an improved invention of the door hinge selected by the present applicant, and more particularly, to a door hinge capable of partial repair and replacement of the door hinge and maintaining an appropriate opening and closing speed at all times regardless of the weight of the door.

In general, the door hinge (door hinge) is an assembly that is installed between the door and the door frame to support the door rotatable about the axis, and in recent years is part of the door check (Door check) to automatically open and close the door I am also serving.

Figure 7 is an exploded perspective view showing the overall configuration of a conventional door hinge that the applicant has filed earlier (Utility Model Registration Application No. 98-761 "door hinge").

As shown in the drawing, a conventional door hinge is provided with a door frame bracket 101 fixed to a door frame and a door bracket 102 fixed to a door, and the door frame bracket 101 and the door bracket 102 are respectively framed. And fastening holes 111 and 121 are formed in the door frame bracket 101 and the door bracket 102 to be fixed to the door so that screws or the like can be inserted.

In addition, the door bracket 102 is rotatably installed inside the door frame bracket 101 by a hinge shaft 103, and one side thereof is an arc-shaped cam surface 122 in sliding contact with the rolling pin 107 to be described later. Formed.

In addition, the torsion spring 104 is installed on the upper surface of the door bracket 102 in order to impart a restoring force to the door bracket 102. One end of the torsion spring 104 is fixed to the hinge shaft 103 and the other end thereof. Is fixed to the fixing pin 123 protruding from the upper surface of the door bracket 102.

In addition, the lower side of the hinge shaft 103 penetrating the door bracket 102 is provided with a rotation control plate 105 for adjusting the tension of the torsion spring 104, the hinge shaft 103 and the rotation control plate ( Each of the pin holes 103A and 105A is formed coaxially in the 105 so as to be mutually fixed by the insertion of the fixing pin 106.

In addition, a rolling pin 107 is provided in the door frame bracket 101 in sliding contact along the cam surface 122 of the door bracket 102, and the rolling pin 107 is a cam surface 122 of the door bracket 102. It is elastically supported by the torsion springs 108 (108A) so as to have a close contact force with (). The torsion springs 108 and 108A are fixed to the upper and lower sides of the door frame bracket 101 by fixing pins 109 and 109A, and the fixing pins 109 and 109A are the door frame brackets. Riveted to the fixing pin insertion hole 112 formed on the upper and lower surfaces of 101, respectively. At this time, one end of the torsion springs 108 and 108A is fixed to the inner surface of the door frame bracket 101 and the other end is fixed to the upper and lower sides of the rolling pin 107 respectively.

In addition, opening stop jaws 124 are formed at both ends of the cam surface 122 of the door bracket 102 so that the rolling pins 107, which are in sliding contact along the cam surface 122, are fixed by the locking by the rotation of the door bracket 102. And a closing stop jaw 125 is formed.

FIG. 8 is a perspective view illustrating an assembly state of a conventional door hinge, and a torsion spring 104 and 108 on a fixing pin 109 109A and a hinge shaft 103 inside the door frame bracket 101 are shown in FIG. 108A is installed, and the torsion springs 104, 108 and 108A are required to be replaced or repaired after being weakened or damaged after long time use. Here, reference numeral 102 denotes a door bracket.

9A, 9B, and 9C show an operating state of a conventional door hinge.

9A is a plan view showing the closed state, in which the door frame bracket 101 and the door bracket 102 are in the same position, and the rolling pin 107 is locked to the closed stop jaw 125 of the door bracket 102. There is.

FIG. 9B is a plan view showing the state at the time of operation. When the door bracket 102 is rotated in the direction of the arrow about the hinge shaft 103 by the opening of the door, the closing stop 125 of the door bracket 102 is performed. The rolling pin 107 located in the sliding stop along the cam surface 122 of the door bracket 102 while being separated from the closing stop (125). At this time, the torsion springs 108 and 108A for elastically supporting the rolling pin 107 are compressed by the rolling pin 107 moving from the closed stop jaw 125 to the cam surface 122, and the expansion force for this compression is Again acting on the cam surface 122 of the door bracket 102 through the rolling pin 107.

FIG. 9C is a plan view showing the opened state, in which the rolling pin 107 also continues along the cam surface 122 of the door bracket 102 by the continuous rotation of the door bracket 102 about the hinge axis 103. It is in sliding contact. At this time, the door bracket 102 is automatically rotated in the opening direction without an external force, such as a door check, from the time when only the pressure of the rolling pin 107 to the cam surface 122 is applied, the rolling pin 107 is the door bracket The opening stop jaw 124 of the 102 is in a locked state.

However, these conventional door hinges are installed on the fixing pins and hinge shafts inside the door frame brackets, which are both weakened and damaged when used for a long time, so that partial repair and replacement are not possible. Therefore, there was a problem that its operation is cumbersome and not easy.

Second, the opening and closing speed of the door is generally determined according to the relationship between the pressure of the rolling pin and the weight of the door on the cam surface of the door bracket. Conventionally, there is no means for adjusting the pressure of the rolling pin in proportion to the weight of the door. According to the weight of the door, the opening and closing speed of the door is shown a significant difference, which causes a problem of maintaining the proper opening and closing speed of the door.

Third, the structure is complicated and the number of parts is not only difficult to assemble, but also takes a lot of work time, there is a problem that increases the cost and inefficiency and productivity of the work.

The present invention was devised to solve the conventional problems as described above, the object of which is to be able to adjust the pressure of the rolling pin acting on the cam surface of the door bracket in proportion to the weight of the door. Another object of the present invention is to allow partial replacement and repair of parts, such as torsion springs, which are weakened or damaged by prolonged use. Another object of the present invention is to reduce the number of parts and simplify the structure. In order to achieve the object of the present invention by rotatably hinged door bracket having a cam surface formed on one side to the door frame bracket, the rolling pin is elastically supported by the torsion spring on the cam surface, the torsion spring door frame Fixing means for fixing to an outside of the bracket; The door hinge is provided with a pressure adjusting means for adjusting the pressing force of the rolling pin against the cam surface of the door bracket. In addition, the fixing means is formed to protrude integrally on the upper and lower surfaces of the door frame bracket, the end of the fixed shaft formed with an annular fixing groove for fixing the "E" ring; It is characterized by consisting of a fixing bracket which is formed on the upper and lower sides of the fixing groove to be fixed to the upper and lower sides so as to fix one end of the fixed torsion spring fitted to the outside of the fixed shaft. The pressure adjusting means includes a space portion formed between the cam surface of the door bracket; An arc-shaped pressing hole rotatably installed by a hinge pin in the space portion to protrude or retract out of the cam surface of the door bracket and contact the rolling pin; Characterized in that it consists of a positioning unit for determining the protruding range and the position of the pressing hole. At the same time, the positioning part is formed to connect several positioning holes in the pressing hole at equal intervals, and on the cam surface of the upper and lower door brackets thereof, a fixing pin insertion hole is formed to coincide with the positioning holes to insert the fixing pins. It is characterized in that the protrusion range and position can be determined.

1 is an exploded perspective view showing the overall configuration of the present invention.

Figure 2 is a perspective view showing the assembled state of the present invention.

3 is a cross-sectional view showing an installation state of the present invention.

Figure 4 is a perspective view of the pressure adjusting means of the present invention.

Figure 5 is a plan view showing the overall angular displacement of the pressure port of the present invention.

6A, 6B, 6C, and 6D show a protruding range according to the displacement angle of the pressure sphere of the present invention.

Figure 6a is a plan view showing a state that the pressure sphere is not displaced.

Figure 6b is a plan view showing a state in which the displacement angle of the pressing opening is minimum.

Figure 6c is a plan view showing a state in which the displacement angle of the pressing opening is in the middle.

Figure 6d is a plan view showing a state in which the displacement angle of the pressing opening is the maximum.

Figure 7 is an exploded perspective view showing the overall configuration of a conventional door hinge.

8 is a perspective view showing an assembled state of a conventional door hinge.

9A, 9B, and 9C show an operating state of a conventional door hinge,

9A is a plan view showing a closed state.

9B is a plan view showing a state during operation;

Figure 9c is a plan view showing an open state.

* Description of the symbols for the main parts of the drawings *

1: Door Bracket 2: Door Bracket

3: Hinge Shaft 4, 4A: Torsion spring

5: rolling pin 6: fixing means

7: Pressure regulating means 8: Cover

11,21: hinged hole 12,22,63C: fastener

13: Holding hole 24, 72A: Hinge pin insertion hole

23: cam face 25: fixed pin insertion hole

26: bearing 27: closed stop chin

61, 62: Fixed shaft 61A, 61B: "E" ring

62A, 62B: Fixed groove 63: Fixed bracket

63A, 63B: Tangage groove 71: Space part

72: Pressure port 73: Hinge pin

74: Positioning section 74A, 74B, 74, C, 74D: 1st, 2nd, 3rd, 4th positioning hole

74E: Locking pin 8: Cover

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the present invention according to the embodiment.

1 is an exploded perspective view showing the overall configuration of the present invention.

This door hinge is provided with a door frame bracket (1) fixed to the door frame as usual, and a door bracket (2) fixed to the door, the door bracket (2) is hinged rotatably hinged to the door frame bracket (1) do. To this end, the hinge holes 11 and 21 are formed in the door frame bracket 1 and the door bracket 2, and the hinge shafts 3 are inserted through the hinge holes 11 and 21. Is installed in such a way.

In addition, several fastening holes 12 and 22 are formed in the door frame bracket 1 and the door bracket 2 to fix the door frame bracket 1 and the door bracket 2 to the door frame and the door with screws.

An arc-shaped cam surface 23 is formed on one side of the door bracket 2 so that the door bracket 2 can be partially opened and closed, such as a door check while giving restoring force to the door bracket 2. Rolling pins 5 which are elastically supported by a pair of torsion springs 4 and 4A are provided to be in contact with each other.

In the door hinge, the present invention is a fixing means (6) for fixing and installing the torsion spring (4) (4A) to the outside of the door frame bracket (1), the upper and lower sides of the door frame bracket (1) A pair of fixed shafts 61 and 62 are integrally formed on the side surface and fixed to prevent separation of the torsion springs 4 and 4A inserted to the outside of the fixed shafts 61 and 62. At the end sides of the shafts 61 and 62, annular fixing grooves 62A and 62B into which the "E" rings 61A and 61B are fitted are formed, respectively.

In addition, a separate fixing bracket 63 in which upper and lower grooves 63A and 63B are formed at upper and lower sides to fix one end of the torsion spring 4 and 4A inserted and fixed to the fixing shafts 61 and 62. Is provided, the fixing bracket 63 is fastened to the side of the door frame bracket 1 screw (63D). To this end, the fixing hole 13 is formed in the door frame bracket 1, and the fixing bracket 63 is provided with a fastening hole 63C coinciding with the fixing hole 13.

And the pressure adjusting means 7 is provided to adjust the pressure of the rolling pin 5 against the cam surface 23 of the door bracket 2, which is a space 71 between the cam surface (23) And an arc-shaped pressure port 72 is rotatably hinged to the space portion 71. Hinge pin insertion hole 72A is formed at one end of the pressing hole 72 so as to be hinged therethrough, and the cam surface 23 of the upper side door bracket 2 of the space portion 71 is formed. A hinge pin insertion hole 24 corresponding to the hinge pin insertion hole 72A is formed thereon, and the pressing hole 72 is inserted into the space portion 71 between the cam surfaces 23 by the insertion of the hinge pin 73. It is configured to be rotatably hinged.

Along with this, the positioning unit 74 is provided to determine and fix the protruding range and the position of the pressing unit 72 by the rotation of the pressing unit 72. As an embodiment thereof, the present invention provides several positioning holes penetrating up and down on the other side of the pressing hole 72, that is, first, second, third and fourth positioning holes 74A, 74B and 74C. 74D are formed to be connected at equal intervals, and the first, second, third and fourth positioning holes 74A, 74B and 74C on the cam face 23 of the upper and lower door brackets 2 thereof. A fixing pin insertion hole 25 is formed in conformity with 74D) and is configured to determine and fix the protruding range and the position of the pressing hole 72 by the insertion of the fixing pin 74E. Its use state and action are described below.

Here, reference numeral 8, a cover, 26 is a bearing for rotatably supporting the hinge shaft (3), 27 is a closing stop jaw to keep the door closed in a state that the rolling pin (5) is fixed by the locking. .

2 is a perspective view showing the assembled state of the present invention.

As shown in the present invention, a pair of torsion springs 4 and 4A which resiliently support the rolling pin 5 to impart a restoring force to the door bracket 2 have upper and lower outer surfaces of the door frame bracket 1. It is installed on. Accordingly, when the torsion springs 4 and 4A are weakened or damaged by prolonged use, only the torsion springs 4 and 4A can be replaced and repaired without disassembling the entire door hinge. .

3 is a cross-sectional view showing an installation state of the present invention.

As shown therein, the door frame bracket 1 of the present invention is fixed to the door frame 100 through a fastening hole 12 with a screw 12A, or the like, and the door bracket 2 is connected to the door through the fastening hole 22. 200) is fixed with a screw 22A or the like.

Figure 4 is a perspective view of the pressure adjusting means of the present invention.

As described above, the pressure adjusting means 7 of the present invention allows the arc-shaped pressure port 72 to be rotatable by the hinge pin 73 in the space 71 between the cam faces 23 of the door bracket 2. Hinged. The first, second, third, and fourth positioning holes 74A, 74B, 74C, and 74D are formed to penetrate up and down at equal intervals on the other side of the pressing hole 72, and the door bracket 2 On the cam surface 23 of the ()) is formed a fixing pin insertion hole 25 coinciding with the first, second, third, fourth position fastening holes 74A, 74B, 74C, 74D to the fixed pin 74E. It is configured to be able to determine and fix the protruding range and the position of the pressing port 72 by the insertion.

FIG. 5 is a plan view showing a state of the displacement of the pressing opening of the present invention as a whole, wherein the pressing opening 72 of the present invention protrudes outward of the door bracket 2 while rotating about a hinge pin 73 according to a user's rotation operation. Or imported.

6a, 6b, 6c, 6d, 6e shows the use state and action according to the pressure sphere displacement angle of the present invention.

6A is a plan view showing a state in which the angle of the pressing hole is not displaced, wherein the pressing hole 72 of the present invention is positioned in the same manner as the cam surface 23 of the door bracket 2, and the first position of the pressing hole 72 is shown. The pin hole 74 of the crystal hole 74A and the cam surface 23 coincide with each other and are fixed by the insertion of the pin pin 74E.

FIG. 6B is a plan view in which the displacement angle of the pressing hole is the minimum, and the pressing hole 72 protrudes outward of the door bracket 2 by the distance between the first positioning hole 74A and the second positioning hole 74B. do. The fixing pin insertion hole 25 of the second positioning hole 74B and the cam surface 23 coincides with each other and is fixed by the insertion of the fixing pin 74E.

6C is a plan view in which the displacement angle of the pressing hole is in an intermediate state, and the pressing hole 72 protrudes outward of the door bracket 2 by the distance between the first positioning hole 74A and the third positioning hole 74C. do. The third positioning hole 74C and the fixing pin insertion hole 25 of the cam surface 23 coincide with each other and are fixed by the insertion of the fixing pin 74E.

FIG. 6D is a plan view in which the displacement angle of the pressing tool is in a maximum state, wherein the pressing tool 72 protrudes outward of the door bracket 2 by a distance between the first positioning hole 74A and the fourth positioning hole 74D. do. The fourth positioning hole 74D and the fixing pin insertion hole 25 of the cam surface 23 coincide with each other and are fixed by the insertion of the fixing pin 74E.

In this way, when the degree of protruding becomes large according to the displacement angle of the pressing hole 72, the compressive strength of the torsion springs (4) and 4A for elastically supporting the rolling pin (5) in sliding contact along the pressing hole (72). Becomes large, thereby increasing the pressing force of the rolling pin 5 against the pressing hole 72 is to be able to appropriately adjust the opening and closing speed in proportion to the weight of the door.

As described above, the present invention enables to adjust the pressing force of the rolling pin against the cam surface of the door bracket that determines the opening / closing speed of the door according to the weight of the door. It will have the effect of making it simple to use.

In addition, by installing the torsion spring, which may be weakened or damaged when used for a long time, is located outside the door frame bracket, it is easy to replace and repair, and also has the effect of simplifying the work.

In addition, by eliminating existing parts such as torsion springs that provide resilience to the door brackets, rotating control plates and fixing pins that control the tension, the number of parts can be reduced, as well as the structure is simplified, thereby reducing the cost and simplicity of assembly work. And speed and efficiency to increase productivity.

Claims (4)

Rolling pin (5) is hinged rotatably coupled to the door frame bracket (1), the door bracket (2) having a cam surface (23) formed on one side, the torsion spring (4) (4A) on the cam surface (23) In constructing this contact, Fixing means (6) for fixing the torsion spring (4) (4A) to the outside of the door frame bracket (1); And a pressure regulating means (7) for adjusting the pressing force of the rolling pin (5) against the cam face (23) of the door bracket (2). According to claim 1, wherein the fixing means 6 is formed integrally projecting on the upper and lower surfaces of the door frame bracket (1), the end of the annular fixing so as to fix the "E" ring (61A) 61B Fixed shafts 61 and 62 having grooves 62A and 62B formed therein; Tangent grooves 63A and 63B are formed at upper and lower sides of the torsion springs 4 and 4A fixed to the outside of the fixed shafts 61 and 62, and the door frame brackets are formed. 1) The door hinge, characterized in that consisting of a fixing bracket 63 is fastened to the screw (63D). According to claim 1, wherein the pressure adjusting means (7) and the space portion (71) formed between the cam surface 23 of the door bracket (2); An arc-shaped pressure port 72 rotatably installed in the space portion 71 by a hinge pin 73 to protrude or enter the cam surface 23 of the door bracket 2 and contact the rolling pin 5. Wow; Door hinge, characterized in that consisting of the positioning portion 74 for determining the protruding range and the position of the pressing hole (72). The method of claim 3, wherein the positioning section 74 is formed in the pressure port 72 to form a plurality of positioning holes (74A) (74B) 74C (74D) in series at equal intervals, the upper and lower parts thereof. On the cam surface 23 of the side door bracket 2, a fixing pin insertion hole 25 is formed to coincide with the positioning holes 74A, 74B, 74C, and 74D. Door hinge, characterized in that the projection range and position can be determined.