JP6360813B2 - Cabinet door hinges - Google Patents

Description

  The present invention relates to a cabinet door hinge interposed between a cabinet and a door that opens and closes an opening of the cabinet.

  As a hinge for a door of this type of conventional cabinet, a hinge shaft that rotatably supports the door attached to the cabinet, a hinge guide member that slidably holds the hinge shaft in the axial direction, and the hinge shaft as a door There is known a door hinge including a spring member that biases in a direction protruding from the upper or lower end of the door (see, for example, Patent Document 1).

  In the door hinge described in Patent Document 1, the hinge guide member is formed in a U-shaped cross section, and is fixed to a hinge mounting portion formed in a bag shape of the door by welding or the like. Since this type of hinge guide member is generally welded to a steel door, the hinge guide member is also formed of a steel material.

  In order to prevent rust, the door is painted after the hinge guide member is welded. When performing the painting operation, the paint is applied to the hinge guide member by spraying or the like with the spring member covered with the masking tape. And when attaching a door to a cabinet after application | coating, the masking tape is peeled off, the hinge axis | shaft is pushed down against the elastic force of a spring member, and it inserts in the shaft hole provided in the cabinet.

JP 2002-168032 A (claim, paragraph 0018, FIG. 2)

However, in the structure in which the hinge guide member is welded to the door, there is a concern that it takes time for welding and that it takes time to attach and remove the masking tape in the painting operation.
Moreover, there is a concern that the paint adheres to the hinge shaft by applying the coating, and hinders the sliding of the hinge shaft.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a cabinet door hinge that can eliminate welding and can be easily attached to a door after the door is painted. .

  In order to solve the above problems, the present invention is a door hinge interposed between a cabinet and a door that opens and closes an opening of the cabinet, and is inserted into a shaft hole provided in the cabinet. A support pin that rotatably supports the door, and a substantially bottomed cylindrical synthetic resin that is fitted into a mounting hole provided at the upper end or lower end of the door and holds the support pin so that it can move in and out. A hinge body and a spring contracted between a bottom portion of the hinge body and an end portion of the support pin to bias an elastic force in a direction in which the support pin protrudes from an upper end portion or a lower end portion of the door A pair of substantially bottomed semi-cylindrical cases whose bottom portions are connected by flexible connecting pieces, and whose opening sides provided along the longitudinal direction can contact each other. Half case, above case half A locking part protrudes from one of the opposing parts on the opening side of the body, and a locking receiving part that can lock the locking part is provided on the other side, and the two case halves are in contact with each other Thus, the hinge body is formed by locking the locking portion and the locking receiving portion (claim 1).

  With this configuration, in the state where the support pin and the spring member are arranged in one case half, the connecting piece is bent so that the other case half contacts the one case half, and both case halves A bottomed cylindrical hinge body can be formed by locking the locking portion and the locking receiving portion provided on the bottom. And the hinge main body which comprised the support pin and the spring member can be fitted and attached to the attachment hole provided in the upper end or lower end of the door.

  In the present invention, the locking portion and the locking receiving portion are provided at two opposing positions in a direction perpendicular to the longitudinal direction of the case half, respectively, and the tip of the locking portion is inward from the tip. A latching claw having an inwardly inclined surface is provided, and the latching receiving portion has a latching surface having an outwardly inclined surface that can be latched by the latching claw and outward from the tip. A receiving step is preferably provided (claim 2).

  By configuring in this way, the inwardly inclined surfaces of the locking claws of the locking portions provided at two opposing positions in the direction orthogonal to the longitudinal direction of one case half are formed on the other case half. The latching claw and the latch receiving step can be latched by sliding on the outward inclined surfaces of the latch receiving step provided at two opposing positions in the direction orthogonal to the longitudinal direction.

  Further, in the present invention, the case halves include a flange portion extending outwardly from the opening end opposite to the bottom portion, and a direction perpendicular to the longitudinal direction of the case half adjacent to the flange portion. An elastically deformable cut-and-raised piece that is inclined and raised toward the flange portion through a notch on the opposite side surface, and the flange portion is provided at the upper or lower end of the door. Preferably, it is formed so as to be able to contact the surface around the mounting hole, and the cut and raised pieces are formed so as to be able to contact the back surface around the mounting hole.

  By configuring in this way, when the case body formed by both case halves is inserted into the mounting hole provided at the upper end or the lower end of the door, the cut and raised piece is elastically deformed and the inside of the mounting hole is By returning to the inclined shape after passing, the flange portion comes into contact with the surface around the mounting hole, and the cut and raised piece comes into contact with the back surface around the mounting hole.

  Also, in the present invention, the case halves include a small-diameter semi-cylindrical portion in which the support pin is slidably fitted on the opening end side opposite to the bottom portion, and a step portion is provided in the small-diameter semi-cylindrical portion. A large-diameter semi-cylindrical portion, and the support pin has a large-diameter end portion engageable with the stepped portion, and the large-diameter end portion and the bottom portions of the two case halves. It is preferable that the spring member is contracted between the two.

  With this configuration, the large-diameter end provided on the support pin engages with the step provided on the case half, and the support pin that protrudes due to the elastic force of the spring member moves. Can be limited.

  In addition, in the present invention, positioning protrusions are provided at opposite positions orthogonal to the longitudinal direction of at least the bottom side and the opening end side of either one of the two case halves, and at least the bottom side and It is preferable to provide a positioning recess that can be fitted to the positioning protrusion at an opposing portion orthogonal to the longitudinal direction on the opening end side.

  With this configuration, when the hinge halves are brought into contact with each other, the locking portion and the locking receiving portion can be locked in a state where the positioning protrusion and the positioning recess are fitted.

  According to this invention, since it is configured as described above, the following excellent effects can be obtained.

  (1) According to the invention described in claim 1, with the support pin and the spring member arranged in one case half, the connecting piece is bent to bring the other case half into contact with the one case half. In addition, after locking the locking portion and the locking receiving portion to form a bottomed cylindrical hinge main body, the hinge main body having a support pin and a spring member is fitted into a mounting hole provided at the upper end or lower end of the door. Can be inserted and installed. Therefore, welding can be eliminated and the door can be easily attached to the door after painting.

  (2) According to the invention described in claim 2, the inwardly inclined surfaces of the locking claws of the locking portions provided at two opposing positions in the direction orthogonal to the longitudinal direction of one case half, The locking claw and the locking receiving stepped portion are locked by sliding on the outward inclined surfaces of the locking receiving stepped portions provided in two opposite positions in the direction orthogonal to the longitudinal direction of the other case half. be able to. Therefore, in addition to the above (1), both hinge halves can be more reliably coupled.

  (3) According to the invention described in claim 3, since the flange portion abuts on the surface around the mounting hole and the cut and raised piece abuts on the back surface around the mounting hole, the above (1), (2 In addition, the attachment to the door can be further strengthened.

  (4) According to the invention described in claim 4, the large-diameter end portion provided on the support pin and the step portion provided on the case half are engaged, and the spring member is biased by the elastic force. Since the movement of the protruding support pin can be restricted, in addition to the above (1) to (3), the support pin can be prevented from being accidentally pulled out from the hinge body, and can be attached to the door. Can be easily.

  (5) According to the invention described in claim 5, when the two hinge halves are brought into contact with each other, the locking portion and the locking receiving portion are locked while the positioning protrusion and the positioning recess are fitted. Therefore, in addition to the above (1) to (4), the assembly of the hinge body can be facilitated and the strength of the hinge body can be strengthened.

It is sectional drawing (a) which shows the use condition of the hinge for doors concerning this invention, the expanded sectional view along the II line of (a), and the II section expanded sectional view (c) of (b). It is sectional drawing (a) which shows the protrusion state of the support pin in this invention, and sectional drawing (b) which shows the accommodation state of a support pin. It is an exploded sectional view showing a hinge main part, a support pin, and a spring member in this invention. It is a front view of the state which developed the hinge main part in this invention. It is the rear view (a) of the said hinge main body, a top view (b), a left side view (c), and a right side view (d). It is sectional drawing (a) in alignment with the VIII-VIII line of FIG. 4, and the III section enlarged sectional view (b) of (a). It is an expanded sectional view along the VV line of FIG. 4, (a), the expanded sectional view along the VI-VI line of FIG. 4 (b), and the expanded sectional view along the VII-VII line of FIG. It is the front view (a) which shows the state before accommodating a support pin and a spring member in the hinge main body in this invention, and its sectional drawing (b).

  Hereinafter, embodiments of a cabinet door hinge (hereinafter referred to as a hinge) according to the present invention will be described in detail with reference to the accompanying drawings. Here, the case where a hinge is attached to the upper end part of a door is demonstrated.

  As shown in FIGS. 1 to 3, the hinge 1 is provided at a top end of the door 4 and a support pin 10 that is inserted into a shaft hole 3 provided in the cabinet 2 and rotatably supports the door 4. The synthetic resin hinge body 20 having a substantially bottomed cylindrical shape, which is inserted into the mounting hole 5 and holds the support pin 10 so as to protrude and slide, and the support pin 10 protrudes from the upper end of the door 4. A spring member 40 is provided between the bottom 21 of the hinge body 20 and the end of the support pin 10 so as to urge the elastic force.

  The support pin 10 is made of a chrome-plated steel material, the end 11 on the distal end side is formed in a narrow taper shape, and the large-diameter end 12 is formed on the proximal end side. The spring member 40 is formed of a stainless steel coil spring.

  The hinge body 20 is formed of, for example, a member made of polyamide resin mixed with glass fiber, the bottom portion 21 is connected by a flexible connecting piece 22, and the opening sides provided along the longitudinal direction are mutually connected. A pair of half-cylindrical case halves 23 and 24 (hereinafter referred to as a first case half 23 and a second case half 24) that can contact each other are provided. The outer diameter of the hinge body 20 is slightly smaller than the inner diameter of the mounting hole 5.

  As shown in FIGS. 4 to 7, one of the first and second case halves 23, 24 facing each other on the opening side, that is, the first case half 23 is provided with a locking portion 25. On the other hand, that is, the second case half 24 is provided with a latch receiving portion 26 to which the latch portion 25 can be latched. In a state where the first and second case halves 23 and 24 are in contact with each other, the locking portion 25 and the locking receiving portion 26 are locked to form the hinge body 20.

  In this case, the locking portion 25 and the locking receiving portion 26 are provided at two opposing positions in the direction perpendicular to the longitudinal direction of the first and second case halves 23 and 24, respectively.

  A locking claw 27 having an inclined surface 27a facing inward from the distal end is provided at the distal end of the locking portion 25. Further, the latch receiving portion 26 is provided with a latch receiving step portion 28 having an inclined surface 28a that is outwardly outward from the tip end, to which the latch claw 27 can be latched.

  As described above, the locking claw 27 having the inclined surface 27a inward from the tip is provided at the tip of the locking portion 25, and the locking claw 27 can be locked to the locking receiving portion 26. Further, by providing the latch receiving step portion 28 having the inclined surface 28a outwardly from the tip, the inward inclined surface 27a of the locking claw 27 of the locking portion 25 is provided with the latch receiving step portion. The locking claw 27 and the locking receiving step 28 can be locked by sliding on the outward inclined surface 28 a of the portion 28.

  The first and second case halves 23 and 24 include a semicircular flange portion 29 extending outward from the opening end opposite to the bottom portion 21, and the first and second case halves 23 and 24 adjacent to the flange portion 29. An elastically deformable cut-and-raised piece 31 that is cut and raised in an inclined manner toward the flange portion 29 via the notch 30 on the opposite side surface in the direction orthogonal to the longitudinal direction of the second case halves 23 and 24; It has.

  The flange portion 29 is formed so as to be able to contact the surface around the mounting hole 5 provided at the upper end of the door 4, and the cut-and-raised piece 31 is formed so as to be able to contact the back surface around the mounting hole 5. .

  The first and second case halves 23 and 24 include a small-diameter semi-cylindrical portion 32 into which the support pin 10 is slidably fitted on the opening end side opposite to the bottom portion 21, and the small-diameter semi-cylindrical portion 32. And a large-diameter semi-cylindrical portion 34 extending through the step portion 33.

  A large-diameter end 12 provided on the support pin 10 is formed to be engageable with the stepped portion 33, and is formed between the large-diameter end 12 and the bottom 21 of the first and second case halves 23 and 24. Further, the spring member 40 is contracted.

  Further, positioning protrusions 35a and 35b are provided at opposing portions orthogonal to the longitudinal direction on the bottom side in the first case half 23, and positioning protrusions are provided at two opposing portions orthogonal to the longitudinal direction on the opening end side. 35c, 35d; 35e, 35f are projected.

  On the other hand, positioning concave portions 36a and 36b that can be fitted to positioning projections 35a and 35b are provided in opposing portions orthogonal to the longitudinal direction on the bottom side in the second case halves 23 and 24, and are provided on the opening end side. Positioning recesses 36c, 36d; 36e, 36f that can be fitted to the positioning protrusions 35c, 35d; 35e, 35f are provided at two opposing portions orthogonal to the longitudinal direction.

  By providing the positioning protrusions 35a to 35f and the positioning recesses 36a to 36f as described above, when the first case half 23 and the second case half 24 are brought into contact with each other, the positioning protrusions 35a to 35f The positioning recesses 36a to 36f are fitted to each other to prevent displacement of the case halves 23 and 24, and the locking portion 25 (locking claw 27) and the locking receiving portion 26 (engagement). The catching step 28) can be reliably locked.

  In the above description, the case where the positioning projections 35a to 35f are provided in the first case half 23 and the positioning recesses 36a to 36f are provided in the second case half 24 has been described. Positioning protrusions 35 a to 35 f may be provided on the case half 24, and positioning recesses 36 a to 36 f may be provided on the first case half 23.

  In the above description, the positioning protrusions 35c, 35d; 35e, 35f and the positioning recesses 36c, 36d are formed at two opposing portions orthogonal to the longitudinal direction on the opening end side of the first and second case halves 23, 24. 36e and 36f are provided, but the positioning projections 35a to 35d and the positioning recesses 36a to 36d may be provided at least at one opposing portion orthogonal to the longitudinal direction of the bottom side and the opening end side. That is, the positioning projections 35e and 35f and the positioning recesses 36e and 36f on the inner side from the opening side may not be provided.

  When attaching the hinge configured as described above, first, the support pin 10 and the spring member 40 are assembled in the hinge body 20. In this case, as shown in FIG. 8, the large-diameter end of the support pin 10 is placed in one of the first and second case halves 23, 24, for example, in the large-diameter semi-cylindrical portion 34 of the second case halves 24. 12, the large-diameter end portion side of the support pin 10 is arranged in the small-diameter semi-cylindrical portion 32. Further, the spring member 40 is contracted between the large-diameter end portion 12 of the support pin 10 and the bottom portion 21 of the second case half 24.

  As described above, after setting the support pin 10 and the spring member 40 to the second case half 24, the connecting piece 22 is bent and the other, that is, the first case half 23 is changed to the second case half 24. Abut. At this time, the positioning projections 35a to 35f and the positioning recesses 36a to 36f are respectively fitted, and the locking portion 25 (locking claw 27) protruding from the first case half 23 is the second case. The hinge main body 20 is formed by engaging (joining) both case halves 23 and 24 by engaging with an engaging receiving portion 26 (an engaging receiving step portion 28) provided on the half 24.

  Next, the hinge body 20 including the support pin 10 and the spring member 40 as described above is inserted into the mounting hole 5 provided at the upper end of the door 4. When the hinge body 20 is fitted into the mounting hole 5, the cut and raised piece 31 is elastically deformed, passes through the mounting hole 5, and then returns to the inclined shape, so that the flange portion 29 is located around the mounting hole 5. The cut-and-raised piece 31 comes into contact with the back surface around the mounting hole 5. Therefore, the hinge body 20 can be firmly attached to the attachment hole 5 of the door 4.

  When the door 4 is attached to the cabinet 2, as shown in FIG. 2B, the hinge portion of the door 4 is attached to the cabinet 2 with the tip of the support pin 10 pushed down against the elastic force of the spring member 40. The door 4 is attached to the cabinet 2 by inserting the support pin 10 into the shaft hole 3 provided in the cabinet 2.

  Therefore, welding can be eliminated and the door 4 can be easily attached to the door 4 after painting.

  Although the case where the hinge is attached to the upper end portion of the door 4 has been described in the above embodiment, the same applies to the case where the hinge is attached to the lower end portion of the door 4.

DESCRIPTION OF SYMBOLS 1 Hinge 2 Cabinet 3 Shaft hole 4 Door 5 Mounting hole 10 Support pin 12 Large diameter end part 20 Hinge main body 21 Bottom part 22 Connection piece 23 1st case half body 24 2nd case half body 25 Locking part 26 Locking receiver Portion 27 locking claw 27a inclined surface 28 locking receiving step portion 28a inclined surface 29 flange portion 30 notch 31 cut and raised piece 32 small-diameter semi-cylindrical portion 33 step portion 34 large-diameter semi-cylindrical portions 35a to 35f positioning projections 36a to 36f Recess for positioning
40 Spring member

Claims (5)

A door hinge interposed between a cabinet and a door for opening and closing the opening of the cabinet,
A support pin that is inserted into a shaft hole provided in the cabinet and rotatably supports the door;
A hinge body made of synthetic resin having a substantially bottomed cylindrical shape that is inserted into an attachment hole provided at the upper end or the lower end of the door, and holds the support pin so as to protrude and slide, and
A spring member that is contracted between the bottom of the hinge body and the end of the support pin to urge the support pin in a direction that protrudes from the upper end or lower end of the door. And
The hinge body includes a pair of half-cylindrical case halves whose bottom portions are connected by flexible connecting pieces and whose opening sides provided along the longitudinal direction can contact each other.
A locking portion protrudes from one of the opposing portions of the case half on the opening side, and a locking receiving portion that can lock the locking portion is provided on the other side. A hinge for a door of a cabinet, wherein the hinge body is formed by locking the locking portion and the locking receiving portion in contact with each other. The cabinet door hinge according to claim 1,
The locking portion and the locking receiving portion are respectively provided at two opposing positions in a direction orthogonal to the longitudinal direction of the case half.
A locking claw having an inwardly inclined surface from the tip to the inside is provided at the tip of the locking part,
The lock receiving portion is provided with a lock receiving stepped portion having an inclined surface that is outwardly outward from the tip end, which can lock the lock pawl. Door hinge. In the hinge for doors of the cabinet of Claim 1 or 2,
The two case halves are notched on opposite sides in a direction perpendicular to the longitudinal direction of the case halves adjacent to the flange, and a flange extending outward from the opening end opposite to the bottom. An elastically deformable cut and raised piece cut and raised in an inclined manner toward the flange portion via
The flange portion is formed so as to be able to contact the surface around the mounting hole provided at the upper end or the lower end of the door, and the cut and raised piece is formed so as to be able to contact the back surface around the mounting hole. The hinge for the door of the cabinet characterized by the above. In the hinge for doors of the cabinet in any one of Claim 1 thru | or 3,
The two case halves include a small-diameter semi-cylindrical portion in which the support pin is slidably fitted on the opening end side opposite to the bottom portion, and a large-diameter semi-cylindrical portion extending through a step portion. A semi-cylindrical portion,
The support pin includes a large-diameter end that can be engaged with the stepped portion,
A hinge for a door of a cabinet, wherein the spring member is contracted between the large-diameter end portion and the bottom portions of both case halves. In the hinge for doors of the cabinet in any one of Claims 1 thru | or 4,
Positioning protrusions are projected from at least one of the two case halves at opposite positions perpendicular to the longitudinal direction of the bottom side and the opening end side, and at least in the longitudinal direction of the bottom side and the opening end side on the other side. A hinge for door of a cabinet, characterized in that a positioning concave portion that can be fitted to the positioning protrusion is provided in an orthogonal portion.

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