GB2433771A

GB2433771A - Door hinge with movable blocks to effect horizontal adjustability

Info

Publication number: GB2433771A
Application number: GB0600028A
Authority: GB
Inventors: Janet Chung
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-03
Filing date: 2006-01-03
Publication date: 2007-07-04
Anticipated expiration: 2026-01-03
Also published as: GB0600028D0; GB2433771B

Abstract

A door hinge includes a base 20 and a door leaf 30 is pivotably connected thereto via a knuckle 31. Two movable blocks 40 are movably received in the base and a shaft 60 extends through the base, the two movable blocks and the door leaf. The shaft is secured to the door leaf. Two adjusting bolts 50 rotatably and laterally extend through the base and are threadedly connected to the two movable blocks 40 so that when the two adjusting bolts are rotated, the two movable blocks together with the shaft and the door leaf are moved in horizontal direction so as to adjust the door leaf relative to the base. An adjusting piece 63 may extend from an underside of the base and may be in contact with an end of the shaft 60 so that when the adjusting piece is rotated to push the shaft, the door leaf is moved in vertical direction relative to the base. Covers 53 may be provided to seal the side holes 26. The shaft may be comprise an eccentric head 61.

Description

ADJUSTABLE DOOR HINGE

FIELD OF THE INVENTION

The present invention relates to a door hinge which can adjust the door in vertical and horizontal directions relative to the frame.

BACKGROUNfl OF THE INVENTION A conventional door" hinge 10 is disclosed in Fig. 1 and generally includes a base 11 which is connected to a frame (not shown) and includes a recess defined in a mediate portion thereof, and a door leaf 12 which is connected to a door (not shown) and includes a sleeve portion 13 pivotably engaged with the recess of the base 11 by two adjusting bolts 15 extending through two ends of the base 11 and the sleeve portion 13 of the door leaf 12. Each adjusting bolt 15 includes a shank portion 151 and a positioning section 153 which includes a plurality of grooves and ridges. A contact portion 152 extends outward from the positioning section 153 and is in contact with an inner periphery of the through hole 111 defined in each of the two ends of the base 11. Two positioning bolts 16 respective extend through the two ends of the base 11 and a tip of each of the positioning bolt 16 is engaged with one of the grooves of the positioning section 153 to prevent the adjusting bolt 15 from rotating. A bush 14 is received in the sleeve portion 13 and is securely mounted to the adjusting bolt 15. When rotating the adjusting bolt 15, the bush 14 is eccentrically rotated so as to move the door leaf 12 laterally. The conventional adjusting door hinge 10 caimot adjust the door in longitudinal direction relative to the frame.

The present invention intends to provide an adjustable door hinge which is able to adjust the door relative to the frame in vertical and vertical directions by the users. The door hinge involves less number of parts and can be operated and manufactured easily.

SUMMARY OF THE INVENTION

The present invention relates to a door hinge which comprises a base fixed to a frame and a door leaf fixed to a door. The base has a recess so as to define a first protrusion and a second protrusion. Each of the first and second protrusions has a longitudinal hole defined therethrough and communicating with the recess. The first and second protrusions each have a chamber defined in a rear end thereof and the chamber communicates with the longitudinal hole corresponding thereto.

Each of the first and second protrusions has a side hole defined transversely therein and communicates with the chamber corresponding thereto.

The door leaf has a knuckle which is engaged with the recess of the base and a passage is defined longitudinally through the knuckle.

Two movable blocks are movably received in the chambers of the first and second protrusions respectively. Each movable block has a threaded hole defined transversely therethrough and a through hole is defined longitudinally therethrough. A shaft extends through the longitudinal holes of the first and second protrusions, the two through holes of the two movable blocks and the knuckle of the door leaf. Two adjusting bolts respectively extend through the side holes of the first and second protrusions and are threadedly engaged with the threaded holes of the two movable blocks by two respective threaded sections of the adjusting bolts. The movable blocks are moved in horizontal direction when rotating the adjusting bolts, the shaft together with the door leaf are moved in horizontal direction.

The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a cross sectional view to show a conventional door hinge; Fig. 2 is a perspective view to show the door hinge of the present invention; Fig. 3 is an exploded view to show the door hinge of the present invention; Fig. 4 is a cross sectional view of the door hinge of the present invention; Fig. 5A shows the shaft is located at a center of the passage of the knuckle; Fig. 5B shows the shaft is located at a lower position in the passage of the knuckle; Fig. 5C shows the shaft is located at an upper position in the passage of the knuckle; Fig. 6A shows there is a gap between the knuckle and the first protrusion of the base, and Fig. 6B shows that the knuckle is moved upward and toward the first protrusion of the base.

DETAILED DESCRIPTION OF THE PREFERRED

EMBODIMENT

Referring to Figs. 2 to 4 and 5A, the adjustable door hinge "A" of the present invention comprises a base 20 fixed to a frame "a" and having a recess 21 defined in a side of a mediate portion thereof so as to form a first protrusion 22 and a second protrusion 220. Each of the first and second protrusions 22, 220 has a longitudinal hole 23 defined therethrough and communicates with the recess 21. The first and second protrusions 22, 220 each have a chamber 24 defined in a rear end thereof and the chamber 24 communicates with the longitudinal hole 23 corresponding thereto. Each of the first and second protrusions 22, 220 has a side hole 26 defined transversely therein and communicates with the chamber 24 corresponding thereto.

A door leaf 30 includes a leaf plate 33 which is fixed to a door "b" and a knuckle 31 which is engaged with the recess 21 of the base 20 and a passage 32 is defined longitudinally through the knuckle 31. The door leaf 30 is pivotably connected to the base 20 by a shaft 60 which extends through the longitudinal holes 23 in the first and second protrusions 22, 220 and the knuckle 31 which is located in the recess 21.

The shaft 60 includes an annular groove 62 defined in an outer periphery thereof. The longitudinal hole 23 of the first protrusion 22 includes a receiving port 25 defined in an inner periphery thereof and the shaft 60 includes an eccentric head 61 which is received in the receiving port 25.

By this way, the shaft 60 is not rotatable relative to the base 20. An adjusting piece 63 is threadedly inserted into the second protrusion 220 from an underside of the second protrusion 220 so as to be in contact with an end of the shaft 60. Two covers 27 are engaged with and seal the two longitudinal holes 23.

Two movable blocks 40 are movably received in the chambers 24 of the first and second protrusions 22, 220 respectively. Each movable block 40 has a threaded hole 41 defined transversely therethrough and a through hole 42 defined longitudinally therethrough. The shaft 60 extends through the two through holes 42. A threaded hole 311 is defined through a wall of the knuckle 31 and a positioning member 37 extends through the threaded hole 311 and is engaged with the annular groove 62 so that the shaft 60 is coimected to the knuckle 31.

Two adjusting bolts 50 respectively extend through the side holes 26 of the first and second protrusions 22, 220 and are threadedly engaged with the threaded holes 41 of the two movable blocks 40 by two respective threaded sections 51 of the adjusting bolts 50. Two washers 52 are located at one of two opposite sides of each of the first and second protrusions 22, 220 and are connected to an end of the adjusting bolt 50 so that the adjusting bolt 50 is rotatably positioned relative to the first/second protrusion 22/220. Four covers 53 are used to seal the side holes 26 and hide the adjusting bolts 50.

Two sets of spring 34 and end member 36 are respectively inserted into the passage 32 from two open ends of the knuckle 31 and the shaft 60 extends through the end members 36 and the springs 34. The passage 32 includes a positioning groove 312 defined in an inner periphery thereof and two bushes 35 are inserted in the passage 32. Each of the bushes 35 includes a boss 351 which is engaged with the positioning groove 312. The two end members 36 each have a cylindrical insertion 361 which is inserted into the bush 35 corresponding thereto. A longitudinal slot 352 is defined through each of the two bushes 35 and located beneath the boss 351. Each of the two end members 36 has a positioning projection 362 which is movably engaged with the longitudinal slot 352 of the bush 35 corresponding thereto so that the end members 36 are longitudinally movable in the two bushes 35.

The shaft 60 is hidden by the end members 36 to prevent the shaft 60 from being rusted. The two springs 34 each have a large end and a narrow end, the large end is engaged a shoulder portion in the passage 32 and the narrow end is inserted into the bush 35 and the end member 36.

By the springs 34 and the knuckle 31 can be moved in vertical direction relative to the base 20 without too much friction.

As shown in Figs. 5B and 5C, when the door "b" is to be adjusted relative to the frame "a", the users remove the covers 53 first and use a tool such as a wrench to engage an action recess 501 defined in an end of a head of the adjusting bolt 50 and rotate the adjusting bolt 50.

The movable blocks 40 are then moved in horizontal direction when rotating the adjusting bolts 50 because the threaded section 51 of the adjusting bolt 50 drives the movable block 40. The shaft 60 extending through the through hole 42 of the movable block 40 together with the door leaf 30 are moved in horizontal direction. A distance "h" in horizontal direction can be adjusted to adjust the door "b" relative to the frame "a".

Referring to Figs. 6A and 6B, when the door "b" is to be adjusted in vertical direction relative to the base 20, the cover 27 on the second protrusion 220 is removed, and the adjusting piece 63 is rotated to push the shaft 60. Because the shaft 60 is secured to the knuckle 31 by the positioning member 37, 50 that then movement of the shaft 60 moves the door leaf 30 in vertical direction so that the door "b" can be adjusted a distance "d" relative to the frame "a".

The door hinge "A" allows the user to easily adjust the door "b" relative to the frame "a" in vertical and horizontal directions. The movable blocks 40 are threadedly connected to the adjusting bolts 50 so that the movable blocks 40 can be moved steadily when rotating the adjusting bolts 50. The eccentric head 61 of the shaft 60 received in the receiving port 25 ensures that the shaft 60 can only shifted and does not rotate in the passages 32. The bosses 351 on the bushes 35 are engaged with the positioning grooves 312 of the knuckle 31 so that when the door leaf 30 is adjusted in vertical direction relative to the base 20, the bushes and the end members 36 are well positioned.

While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.

Claims

WHAT IS CLAIMED IS: 1. A door hinge comprising: a base adapted to be

fixed to a frame and having a recess defined in a side of a mediate portion thereof so as to form a first protrusion and a second protrusion, each of the first and second protrusions having a longitudinal hole defined therethrough and communicating with the recess, the first and second protrusions each having a chamber defined in a rear end thereof and the chamber communicating with the longitudinal hole corresponding thereto, each of the first and second protrusions having a side hole defined transversely therein and communicating with the chamber corresponding thereto; a door leaf adapted to be connected to a door and having a knuckle which is engaged with the recess of the base and a passage defined longitudinally through the knuckle; two movable blocks movably received in the chambers of the first and second protrusions respectively, each movable block having a threaded hole defined transversely therethrough and a through hole defined longitudinally therethrough; a shaft extending through the longitudinal holes of the first and second protrusions, the two through holes of the two movable blocks and the knuckle of the door leaf, and two adjusting bolts respectively extending through the side holes of the first and second protrusions and being threadedly engaged with the threaded holes of the two movable blocks by two respective threaded sections of the adjusting bolts, the movable blocks being moved in horizontal direction when rotating the adjusting bolts, the shaft together with the door leaf being moved in horizontal direction.

2. The door hinge as claimed in claim 1, wherein each of the two adjusting bolts has an action recess defined in an end of a head thereof.

3. The door hinge as claimed in claim 1, wherein two washers are located at one of two opposite sides of each of the first and second protrusions and are connected to an end of the adjusting bolt so that the adjusting bolt is rotatably positioned relative to the firstlsecond protrusion.

4. The door hinge as claimed in claim 1, wherein two sets of spring and end member are respectively inserted into the passage from two open ends of the knuckle and the shaft extends through the end members and the springs.

5. The door hinge as claimed in claim 1, wherein the longitudinal hole of the first protrusion includes a receiving port defined in an inner periphery thereof and the shaft includes an eccentric head which is received in the receiving port.

6. The door hinge as claimed in claim 4, wherein the passage includes a positioning groove defined in an inner periphery thereof and two bushes are inserted in the passage, each of the bushes includes a boss which is engaged with the positioning groove, the two end members each have a cylindrical insertion which is inserted into the bush corresponding thereto.

7. The door hinge as claimed in claim 6, wherein a longitudinal slot is defined through each of the two bushes and located beneath the boss, each of the two end members has a positioning projection which is movably engaged with the longitudinal slot of the bush corresponding thereto so that the end members are longitudinally movable in the two bushes.

8. The door hinge as claimed in claim 6, wherein the two springs each have a large end and a narrow end, the large end is engaged a shoulder portion in the passage and the narrow end is inserted into the bush and the end member.

9. The door hinge as claimed in claim 1, wherein a threaded hole is defined through a wall of the knuckle and a positioning member extends through the threaded hole and is engaged with the shaft.

10. The door hinge as claimed in claim 9, wherein the shaft includes an annular groove is defined in an outer periphery thereof and the positioning member is engaged with the annular groove.

11. The door hinge as claimed in claim 1, wherein an adjusting piece is threadedly inserted into the second protrusion from an underside of the second protrusion so as to be in contact with an end of the shaft.

12. A door hinge substantially as hereinbefore described with reference to Figures 2 to 6 of the drawings.