Hinge angle adjustment mechanism and hidden hinge

Abstract

The present invention relates to a hinge angle adjustment mechanism and a hidden hinge, comprising a frame mounting base, a long support piece and a middle support piece, wherein the middle support piece and the long support piece are cross-arranged and hinged through a first pin shaft, the proximal end of the middle support piece is hinged to the frame mounting base, and the proximal end of the long support piece is hinged to a sliding seat, the frame mounting base is provided with a sliding groove having a contraction groove section, the sliding seat is slidably matched in the sliding groove, an angle adjustment screw is supported on the sliding seat, the lower end of the angle adjustment screw is provided with a limiting portion that can slidably match with the sliding groove, before the angle adjustment screw is rotated, the contraction groove section limits the limiting portion, and after the angle adjustment screw is rotated, the limiting portion can pass through the contraction groove section.

Description

Technical Field

[0001] The invention relates to a hardware component, in particular to a hinge angle adjustment mechanism and a hidden hinge. Background Art

[0002] At present, the European standard aluminum alloy inner casement and bottom hanging system in the door and window hardware industry mostly has exposed hinges. After the window sash is installed with hinges, the angle of the window cannot be positioned. The existing technology generally adopts additional wind bracing to control the opening angle, which not only increases the cost, but also is not conducive to hiding the hinge. The opening angle of the common hidden hinges on the market is 90°, and the hinge can only control a single angle. The product has poor versatility. Not only do consumers need to purchase hinge products of different models, but it also seriously affects production. Product specifications and parts specifications are increased in production. At the same time, different equipment is required for products of different specifications, resulting in increased production costs. Summary of the invention

[0003] The purpose of the present invention is to provide a hinge angle adjustment mechanism and a hidden hinge in view of the deficiencies in the prior art. The mechanism has a simple and compact structure, strong versatility, can control the extreme opening angle of the window sash, and can switch between different opening angles within the controlled extreme angle.

[0004] The objective of the present invention is achieved as follows: A hinge angle adjustment mechanism comprises a frame mounting base, a long support piece and a middle support piece, the middle support piece and the long support piece are cross-arranged and hinged via a first pin shaft, the proximal end of the middle support piece is hinged to the frame mounting base, the proximal end of the long support piece is hinged to the sliding seat, the frame mounting base is provided with a sliding groove having a contraction groove section, the sliding seat is slidably engaged in the sliding groove, an angle adjustment screw is supported on the sliding seat, the lower end of the angle adjustment screw is provided with a limiting portion that can slidably engage with the sliding groove, before the angle adjustment screw is rotated, the contraction groove section limits the limiting portion, and after the angle adjustment screw is rotated, the limiting portion can pass through the contraction groove section.

[0005] The slide groove passes through the frame mounting base, and the slide groove has a wide groove section and a narrow groove section, and the wide groove section and the narrow groove section are transitioned through a contraction groove section. The sliding seat includes a damping friction block and a damping locking block arranged in the thickness direction of the frame mounting base, and the damping friction block and the damping locking block are connected by fasteners passing through the slide groove and clamp the frame mounting base.

[0006] The angle adjustment screw comprises a columnar supporting portion, a limiting portion and a disc head portion, wherein the supporting portion is rotatably supported on the damping locking block, and the disc head portion extends upward into the through hole of the damping friction block.

[0007] The limiting portion is a cylindrical section structure, and two mutually parallel section surfaces of the cylindrical section structure are parallel to the axis of the limiting portion, the two section surfaces are symmetrical about the axis of the limiting portion, the distance between the two section surfaces is smaller than the width of the narrow groove section, and the diameter of the arc surface of the cylindrical section structure is larger than the width of the narrow groove section.

[0008] A scale mark is arranged at the upper end of the through hole, and an indication mark is arranged at the top end of the disk head.

[0009] The proximal end of the long support piece is hinged to the damping locking block through a second pin shaft passing through the slide slot, and the shaft body of the second pin shaft is slidably matched with the narrow groove section of the slide slot.

[0010] A columnar connecting portion is arranged at the proximal end of the long support piece, a mounting hole for mounting the second pin shaft is arranged at the center of the connecting portion, and an arc-shaped groove matching the cylindrical surface of the connecting portion is arranged on one side of the damping friction block facing the connecting portion.

[0011] The end of the damping locking block is provided with a bent portion (427) bent upwards, and the bent portion (427) extends into the slide groove and slidably cooperates with the slide groove.

[0012] A hidden hinge comprises the hinge angle adjustment mechanism and a fan mounting base, wherein the distal end of the long branch is hinged to the fan mounting base, the distal end of the middle branch is hinged to the proximal end of the short branch, and the distal end of the short branch is hinged to the fan mounting base.

[0013] The raised portion at the far end of the fan mounting base is threadedly connected to an adjusting bolt whose extension direction is parallel to the extension direction of the fan mounting base. The shaft of the adjusting bolt passes through the give way grooves of the left and right adjusting blocks, and the head of the adjusting bolt is axially limited in the groove of the adjusting block.

[0014] By adopting the above scheme, the beneficial effects are as follows: the frame mounting base can be connected to the window frame, and the distal ends of the long support piece and the middle support piece are used to support the window sash assembly. By controlling the swing angle of the middle support piece, the swing angle of the long support piece and the position sliding of the long support piece, the displacement and angle adjustment of the window sash assembly can be realized, and the angle adjustment of the window sash assembly can be realized by controlling the sliding distance of the sliding seat. When the contraction groove section limits the limit part, the sliding seat reaches the first limit position, that is, the contraction groove section, and then also determines the first limit angle of the swing angle of the long support piece. By rotating the angle adjusting screw, when the contraction groove section can pass through the limit part, the sliding seat can continue to slide, and the sliding distance of the sliding seat increases. When the sliding seat slides to the second limit position, the limit position can be the end of the slide groove, and the long support piece has a second limit angle of swing, and the long support piece can swing within this limit angle. The present invention can control the limit angle of opening of the window sash, and can realize the switching of different opening angles within the controlled limit angle.

[0015] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the decomposition of the present invention;

[0018] Figure 3 is a structural schematic diagram of an angle adjustment screw;

[0019] Figure 4 This is a schematic diagram of the use state of the present invention when the window sash is opened 180°;

[0020] Figure 5 It is a schematic diagram of the use state of the present invention when the window sash is opened 90 degrees.

[0021] In the accompanying drawings, 100 is a frame mounting base, 110 is a slide groove, 111 is a contraction groove section, 112 is a wide groove section, 113 is a narrow groove section, 120 is a first pin shaft, 130 is a second pin shaft, 200 is a long support plate, 220 is a connecting portion, 300 is a middle support plate, 400 is a sliding seat, 410 is an angle adjustment screw, 411 is a limiting portion, 412 is a supporting portion, 413 is a disk head, 420 is a damping locking block, 423 is an arc-shaped groove, 430 is a damping friction block, 431 is a through hole, 432 is a scale mark, 500 is a fan mounting base, 510 is a protrusion, 520 is an adjusting bolt, 540 is a left and right adjustment block, 600 is a short support plate, 4111 is a cutting surface, and 4131 is an indicator mark. DETAILED DESCRIPTION

[0022] Specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0023] See also Figures 1 to 5An embodiment of a hidden hinge, a hidden hinge, includes a hinge angle adjustment mechanism and a fan mounting base 500, the distal end of the long support piece 200 is hinged to the fan mounting base 500, the distal end of the middle support piece 300 is hinged to the proximal end of the short support piece 600, the distal end of the short support piece 600 is hinged to the fan mounting base 500, the long support piece 200, the middle support piece 300, the short support piece 600 and the fan mounting base 500 form a quadrilateral, by controlling the swing angle of the middle support piece 300, the swing angle of the long support piece 200 and the position of the long support piece 200, the fan mounting base 500 can be swung between 0 and 180 degrees, and the position can be moved. The raised portion 510 arranged at the far end of the sash mounting base 500 is threadedly connected with an adjusting bolt 520 whose extension direction is parallel to the extension direction of the sash mounting base 500. The shaft of the adjusting bolt 520 passes through the give way grooves of the left and right adjusting blocks 540. The head of the adjusting bolt 520 is axially limited in the grooves of the left and right adjusting blocks 540. The left and right adjusting blocks 540 can be installed and fixed to the window sash, and the sash mounting base 500 is embedded in the embedding groove of the window sash. The sash mounting base 500 can be adjusted by rotating the adjusting bolt 520.

[0024] The hinge angle adjustment mechanism includes a frame mounting base 100, a long support piece 200 and a middle support piece 300. The frame mounting base 100 is used for mounting and fixing the fan frame. The middle support piece 300 is cross-arranged with the long support piece 200 and is hinged through a first pin shaft 120. The proximal end of the middle support piece 300 is hinged to the frame mounting base 100, and the proximal end of the long support piece 200 is hinged to the sliding seat 400. A sliding groove 110 with a contraction groove section 111 is provided on the frame mounting base 100, and the sliding seat 400 is slidably matched in the sliding groove 110. In this embodiment, the slide groove 110 passes through the frame mounting base 100, and the slide groove 110 has a wide groove section 112 and a narrow groove section 113. The wide groove section 112 and the narrow groove section 113 are transitioned through the contraction groove section 111. The sliding seat 400 includes a damping friction block 430 and a damping locking block 420 arranged in the thickness direction of the frame mounting base 100. The damping friction block 430 and the damping locking block 420 are connected by fasteners passing through the slide groove 110 and clamp the frame mounting base 100. When the sliding seat 400 slides, the damping friction block 430 and the damping locking block 420 rub against the frame mounting base 100, so that the sliding seat 400 can achieve damping adjustment, and then achieve damping adjustment when the hidden hinge is opened. The end of the damping locking block may be provided with a bending portion 427 that bends upward, and the bending portion 427 extends into the slide groove 110 and slidably cooperates with the slide groove 110. When the bending portion 427 abuts against the inner wall of the slide groove 110, the bending portion 427 limits the extreme position of the movement of the damping locking block to prevent the sliding seat 400 from sliding out of position.

[0025] The sliding seat 400 supports an angle adjustment screw 410, and the lower end of the angle adjustment screw 410 is provided with a limiting portion 411 that can slidably cooperate with the sliding groove 110. The limiting portion 411 can slidably cooperate with the sliding groove 110 to prevent the limiting portion 411 from swinging around the proximal end of the long support piece during sliding. Before rotating the angle adjustment screw 410, the contraction groove section 111 limits the limiting portion 411. In the present embodiment, when the limiting portion 411 interferes with the contraction groove section 111, the limit angle of the window sash opening is 90°, and the window sash can be adjusted within the range of 0-90°. After rotating the angle adjustment screw 410, the limiting portion 411 can pass through the contraction groove section 111. In the present embodiment, when the limiting portion 411 moves to the limit position of the narrow groove section 113, the opening angle of the window sash is 180°, and can be adjusted within the range of 180°. The major axis length of the cross section of the limiting portion 411 is greater than the width of the narrow slot segment 113, and the minor axis length of the limiting portion 411 is less than the width of the narrow slot segment 113, which can meet the needs. The cross section of the limiting portion 411 can be an ellipse, a rectangle, or the like; the limiting portion 411 can also be an eccentrically arranged cylinder. When the cylinder is eccentrically arranged, the contraction slot segment 111 limits the limiting portion 411. After rotating the cylinder, the limiting portion 411 can pass through the contraction slot segment 111. In this embodiment, the angle adjustment screw 410 includes a columnar supporting portion 412, a limiting portion 411 and a disk head 413. The supporting portion 412 is rotatably supported on the damping locking block 420 to facilitate the rotation of the angle adjustment screw 410. The disk head 413 extends upward into the through hole 431 of the damping friction block 430 to rotate the angle adjustment screw 410. The limiting portion 411 is a cylindrical section structure. Two mutually parallel cross-sections 4111 of the cylindrical section structure are parallel to the axis of the limiting portion 411. The two cross-sections 4111 are symmetrical about the axis of the limiting portion 411. The distance between the surfaces 4111 is smaller than the width of the narrow slot section 113, and the diameter of the arc surface of the cylindrical section structure is larger than the width of the narrow slot section 113. By rotating the angle adjustment screw 410, when the arrangement direction of the cut surface 4111 is parallel to the extension direction of the slide 110, the limiting portion 411 cannot pass through the contraction slot section 111. When the arrangement direction of the cut surface 4111 is perpendicular to the extension direction of the slide 110, the limiting portion 411 can pass through the contraction slot section 111. By rotating the angle adjustment screw 410, the arrangement direction of the cut surface 4111 can be changed, and then the limiting structure can be limited or released. The upper end of the through hole 431 is provided with a scale mark 432, and the top of the disk head 413 is provided with an indication mark 4131, and the angle adjustment screw 410 can be accurately rotated through the mark.

[0026] Furthermore, the proximal end of the long support piece 200 is hinged to the damping locking block through a second pin shaft 130 passing through the slide slot 110, and the shaft body of the second pin shaft 130 is slidably matched with the narrow groove section 113 of the slide slot 110, so as to realize the hinge and the limitation of the relative positions of the slide slot 110, the proximal end of the long support piece 200 and the damping locking block. Further, the proximal end of the long support piece 200 is provided with a columnar connecting portion 220, and the center of the connecting portion 220 is provided with a mounting hole for mounting the second pin shaft 130, and the damping friction block is provided with an arc groove 423 adapted to the cylindrical surface of the connecting portion 220 on the side facing the connecting portion 220. The use of this structure can not only prevent the damping locking block 420 from rotating around the fastener, but also when the connecting portion 220 and the arc groove 423 rotate relative to each other, the arc groove 423 rubs against the connecting portion 220, which can enhance the damping effect and facilitate the damping adjustment of the hinge.

[0027] The hidden hinge provided by the present invention can realize the window sash opening 180 degrees, 90 degrees, and angle switching within the corresponding angle range, and can limit the opening angle of the window according to the needs of customers, and has its own damping adjustment. The resistance of the damping adjustment can prevent the window sash from damaging the window and hardware when it is affected by the wind, thereby ensuring the safety performance of the window. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. In this way, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A hinge angle adjustment mechanism, Features: The invention comprises a frame mounting base (100), a long support piece (200) and a middle support piece (300), wherein the middle support piece (300) and the long support piece (200) are arranged crosswise and are hingedly connected via a first pin shaft (120), the proximal end of the middle support piece (300) is hingedly connected to the frame mounting base (100), the proximal end of the long support piece (200) is hingedly connected to a sliding seat (400), and a slide groove (110) having a contraction groove section (111) is provided on the frame mounting base (100), and the slide groove (110) 0) in a sliding fit sliding seat (400), the sliding seat (400) supports an angle adjustment screw (410), the lower end of the angle adjustment screw (410) is provided with a limiting portion (411) that can slide with the slide groove (110), before the angle adjustment screw (410) is rotated, the shrinking groove section (111) limits the limiting portion (411), and after the angle adjustment screw (410) is rotated, the limiting portion (411) can pass through the shrinking groove section (111); The slide groove (110) passes through the frame mounting base (100), the slide groove (110) has a wide groove section (112) and a narrow groove section (113), the wide groove section (112) and the narrow groove section (113) are transitioned through a contraction groove section (111), the sliding seat (400) comprises a damping friction block (430) and a damping locking block (420) arranged in the thickness direction of the frame mounting base (100), the damping friction block (430) and the damping locking block (420) are connected by a fastener passing through the slide groove (110) and clamp the frame mounting base (100); The angle adjustment screw (410) comprises a columnar support portion (412), a limiting portion (411) and a disc head portion (413); the support portion (412) is rotatably supported on the damping locking block (420), and the disc head portion (413) extends upward into a through hole (431) of the damping friction block (430); The limiting portion (411) is a cylindrical section structure, two mutually parallel section surfaces (4111) of the cylindrical section structure are parallel to the axis of the limiting portion (411), the two section surfaces (4111) are symmetrical about the axis of the limiting portion (411), the distance between the two section surfaces (4111) is smaller than the width of the narrow groove section (113), and the diameter of the arc surface of the cylindrical section structure is larger than the width of the narrow groove section (113); A scale mark (432) is provided at the upper end of the through hole (431), and an indication mark (4131) is provided at the top end of the disk head (413); The proximal end of the long support piece (200) is hingedly connected to the damping locking block via a second pin shaft (130) passing through the slide slot (110), and the shaft body of the second pin shaft (130) is slidably matched with the narrow groove section (113) of the slide slot (110).

2. A hinge angle adjustment mechanism according to claim 1, Features: A columnar connecting portion (220) is provided at the proximal end of the long support piece (200), a mounting hole for mounting the second pin shaft (130) is provided at the center of the connecting portion (220), and an arc-shaped groove (423) adapted to the cylindrical surface of the connecting portion (220) is provided on the side of the damping friction block facing the connecting portion (220).

3. A hinge angle adjustment mechanism according to claim 1, Features: An upwardly bent portion (427) is provided at the end of the damping locking block; the bent portion (427) extends into the slide groove (110) and slidably cooperates with the slide groove (110).

4. A hidden hinge, Features: It comprises the hinge angle adjustment mechanism as described in any one of claims 1 to 3 and a fan mounting base (500), wherein the distal end of the long support piece (200) is hinged to the fan mounting base (500), the distal end of the middle support piece (300) is hinged to the proximal end of the short support piece (600), and the distal end of the short support piece (600) is hinged to the fan mounting base (500).

5. The concealed hinge according to claim 4, Features: A raised portion (510) disposed at the far end of the fan mounting base (500) is threadedly connected to an adjusting bolt (520) whose extension direction is parallel to the extension direction of the fan mounting base (500); the shaft of the adjusting bolt (520) passes through the clearance grooves of the left and right adjusting blocks (540); and the head of the adjusting bolt (520) is axially limited in the groove of the adjusting block.

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