CN116791989A - Concealed side-hung lower hinge - Google Patents

Abstract

The invention discloses a hidden type flat-open lower hinge which comprises a window frame installation component and a hinge main body, wherein the window frame installation component comprises a bottom plate and a base, the bottom plate is fixed with the base through rivets, the base is fixed with a window frame through a set screw, an inner inverted block is installed on one end of the base, a first notch for adapting the inner inverted block is formed in the position, corresponding to the inner inverted block, of the bottom plate, the hinge main body comprises a fan connector, a small connecting rod, a long connecting rod and a short connecting rod, and the long connecting rod, the short connecting rod and the small connecting rod are riveted into a multi-connecting-rod structure with the fan connector, so that the hinge main body can be opened for 180 degrees. The hidden type casement lower hinge provided by the invention has the advantages that through the split structure design, the whole window can be installed and positioned more accurately, more conveniently and quickly, a larger inward tilting angle can be realized, and more window sash sectional materials, window sash sizes and larger ventilation quantity are adapted.

Description

Concealed side-hung lower hinge

Technical Field

The invention relates to the technical field of doors and windows, in particular to a hidden type flat-open lower hinge.

Background

At present, a lower hinge for a conventional inward-opening lower-hung window can only be opened by 90 degrees, and along with the development of technology, the user has more and more demands on 180 degrees of lower hinge opening and high bearing; the lower hinge is mainly integrated, so that the window sash is difficult to align and install under the condition of heavy window sashes, and two persons are usually required to complete the installation; meanwhile, the hinge adjusting structure is not perfect enough, so that the tightness of the window sashes is insufficient when the window sashes are closed, the window sashes are not smooth to open and close, and the problems that the window sashes are easy to tilt or open horizontally and the safety is insufficient are possibly caused.

Disclosure of Invention

Aiming at the technical problems, the invention provides a hidden type flat-open lower hinge which is provided with a split installation structure, and based on the split installation structure, the hidden type flat-open lower hinge has a larger inward-tilting angle when being tilted inward, and is suitable for more window sashes and larger ventilation quantity.

In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a hidden flat-open hinge down, hidden flat-open hinge down includes window frame installation component and hinge main part, window frame installation component includes bottom plate and base, the bottom plate pass through the rivet with the base is fixed, the base passes through sharp holding screw and window frame are fixed, install interior piece down on one end of the base, the bottom plate corresponds interior piece department is provided with the confession in the first notch of piece adaptation that falls down, the hinge main part includes fan connector, little connecting rod, long connecting rod, short connecting rod, wherein, fan connector includes the vertical connecting seat and the horizontal connecting seat of integrative perpendicular setting, the vertical connecting seat bottom with long connecting rod one end riveting, the long connecting rod other end passes through the sliding rivet riveting on the second notch of bottom plate, short connecting rod one end with little connecting rod one end articulates, the little connecting rod other end riveting is in the horizontal connecting seat, the short connecting rod other end passes through interior nail the bottom plate and with interior piece adaptation first notch, the short connecting rod middle part with one side that falls down of long middle part articulated, be provided with the eccentric rivet on the second notch.

The vertical connecting seat is provided with an adjusting cylinder, an upper adjusting mechanism and a lower adjusting mechanism are arranged in the adjusting cylinder, the upper adjusting mechanism and the lower adjusting mechanism comprise a supporting column, steel balls and adjusting screws, the supporting column is arranged at the end part of the long connecting rod, the top end of the supporting column is provided with the steel balls, and the tops of the steel balls are abutted to the bottoms of the adjusting screws.

Wherein, the second notch is big notch of integral type.

The horizontal adjusting block is fixed on the round hole of the longitudinal connecting seat through a flat end set screw.

The horizontal adjusting block comprises an adjusting block base and an adjusting block boss tip, and a square hole which is in fit and clamping connection with the adjusting block boss tip is formed in the longitudinal connecting seat.

The end part of one end of the base is also provided with a threaded boss, and the left and right direction adjustment of the window sashes is realized by matching the threaded boss through an adjusting screw.

Wherein, the end part of the other end of the base is provided with a C-shaped bayonet; and/or one side of the base is provided with a C-shaped bayonet.

The climbing block is riveted at one end of the bottom plate and positioned at the bottom of the long connecting rod through a hollow rivet.

The outer side of one end of the longitudinal connecting seat is provided with a limiting boss, and the limiting boss is matched with the bending opening of the head of the bottom plate to limit.

The middle part of the transverse connecting seat is riveted with a locking plate, and the locking plate and the fan notch are matched and locked to realize the installation with the fan by rotating.

The beneficial effects of the invention are as follows: compared with the prior art, the embodiment of the invention provides a hidden type flat-open lower hinge, which comprises a window frame installation component and a hinge main body, wherein the window frame installation component comprises a bottom plate and a base, the bottom plate is fixed with the base through rivets, the base is fixed with a window frame through a set screw, an inner inverted block is installed on one end of the base, a first notch for adapting the inner inverted block is formed in the position, corresponding to the inner inverted block, of the bottom plate, of the hinge main body comprises a fan connector, a small connecting rod, a long connecting rod and a short connecting rod, the fan connector comprises a longitudinal connecting seat and a transverse connecting seat which are integrally and vertically arranged, the bottom end of the longitudinal connecting seat is riveted with one end of the long connecting rod, and the long connecting rod, the short connecting rod and the small connecting rod are riveted with the fan connector to form a multi-connecting rod structure, so that the hinge main body can be opened by 180 degrees. The hidden type casement lower hinge provided by the invention has the advantages that through the split structure design, the whole window can be installed and positioned more accurately, more conveniently and quickly, a larger inward tilting angle can be realized, and more window sash sizes and larger ventilation quantity can be adapted.

Drawings

FIG. 1 is an exploded view of a hidden casement lower hinge of embodiment 1 of the present invention;

FIG. 2 is a schematic view showing a closed state structure of a hidden casement lower hinge according to embodiment 1 of the present invention;

fig. 3 is a first structural schematic diagram of the hidden-type flat-open lower hinge in the opened state according to embodiment 1 of the present invention;

fig. 4 is a second schematic structural view of the hidden-type flat-open lower hinge in the opened state according to embodiment 1 of the present invention;

FIG. 5 is a partially assembled schematic illustration of a window frame mounting assembly of embodiment 1 of the invention;

fig. 6 is a first cross-sectional view of the window frame mounting assembly of embodiment 1 of the invention;

fig. 7 is a second cross-sectional view of the window frame mounting assembly of embodiment 1 of the invention;

FIG. 8 is a schematic view showing the assembly of the hinge body and the window frame mounting assembly according to embodiment 1 of the present invention;

fig. 9 is a first sectional view of the hinge body mounting of embodiment 1 of the present invention;

fig. 10 is a second sectional view of the hinge body mounting of embodiment 1 of the present invention;

FIG. 11 is a sectional view showing the installation of the inside reverse nail (A) and the slide rivet (B) of example 1 of the present invention;

FIG. 12 is a schematic view showing the movement of the slide rivet according to embodiment 1 of the present invention in the state of hinge-mounted (C) and hinge-active (D);

FIG. 13 is an exploded view of the fan connector and horizontal adjustment block of embodiment 1 of the present invention;

FIG. 14 is a combined state diagram of the fan connector and horizontal adjustment block of embodiment 1 of the present invention;

FIG. 15 is a first schematic view of the inside-out drop-off prevention of example 1 of the present invention;

FIG. 16 is a second schematic view of the inside-out drop-off prevention of example 1 of the present invention;

FIG. 17 is a schematic view of pressure adjustment of a hidden side-by-side lower hinge according to embodiment 1 of the present invention;

fig. 18 is a schematic view showing up-down adjustment of the hidden type flat-open lower hinge according to embodiment 1 of the present invention;

FIG. 19 is a schematic view of the hidden flat-open lower hinge level adjustment of embodiment 1 of the present invention;

FIG. 20 is a schematic view of the principle of limiting the angle of the eccentric pin according to embodiment 1 of the present invention;

fig. 21 is a schematic diagram showing the whole assembly of the hidden casement lower hinge and the window sash according to embodiment 1 of the present invention;

FIG. 22 is a schematic view showing the structure of a slide rivet according to embodiment 1 of the present invention;

FIG. 23 is a schematic view showing the structure of a slide rivet according to embodiment 2 of the present invention;

FIG. 24 is an exploded view of a hidden casement lower hinge according to embodiment 2 of the present invention;

FIG. 25 is a schematic view showing the assembly of the hinge body and the window frame mounting assembly according to embodiment 2 of the present invention;

FIG. 26 is a sectional view showing the installation of the inside reverse nail (A) and the slide rivet (B) of example 2 of the present invention;

FIG. 27 is a schematic view showing the movement of the slide rivet according to embodiment 2 of the present invention in the state of hinge-mounted (C) and hinge-active (D);

FIG. 28 is a first schematic view of the invention in example 2;

fig. 29 is a bottom view of embodiment 2 of the present invention when the hinge opening angle is 0 degrees;

FIG. 30 is a cross-sectional view (E) of the hinge of embodiment 2 of the present invention when the hinge is opened at 0 degrees and a cross-sectional view (F) when the hinge is inverted at 0 degrees;

FIG. 31 is a bottom view of embodiment 2 hinge of the present invention opened to other angles (< 90 degrees);

FIG. 32 is a cross-sectional view of the open state of FIG. 31;

fig. 33 is a bottom view of the hinge of embodiment 2 of the present invention opened to other angles (> 90 degrees);

fig. 34 is a cross-sectional view of the fig. 33 open state.

The reference numerals in the figures illustrate: 1. a bottom plate; 2. a base; 3. a tip set screw; 4. pouring the block inwards; 5. a first notch; 6. a fan connector; 61. a longitudinal connecting seat; 62. a transverse connecting seat; 63. an adjustment cylinder; 64. square holes; 65. a round hole; 66. a limit boss; 7. a small connecting rod; 8. a long connecting rod; 9. a short connecting rod; 10. a slide rivet; 11. an inner reverse nail; 12. a second notch; 13. eccentric nails; 14. a support column; 15. steel balls; 16. an adjusting screw; 17. a horizontal adjustment block; 171. an adjusting block base; 172. the boss tip of the adjusting block; 18. a flat end set screw; 19. a threaded boss; 20. an adjusting screw; 21. c-shaped bayonet; 22. climbing blocks; 23. a hollow rivet; 101. opening holes; 102. a limit groove; 24. a locking plate; 25. a locking plate rivet; 26. a rivet; 201. a base boss; 202. a guide groove; 27. an inner groove; 28. a gasket; 29. a slot.

Detailed Description

In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Example 1

Referring to fig. 1-22, which are schematic views of the structure of the hidden type bottom hinge and its components in embodiment 1 of the present invention, as shown in the drawings, the embodiment of the present invention provides a hidden type bottom hinge, the whole structure of which includes a window frame mounting component and a hinge body, the window frame mounting component includes a bottom plate 1 and a base 2, the bottom plate 1 is fixed to the base 2 by a rivet 26, the base 2 is fixed to the window frame by a tip fastening screw 3, an inner pouring block 4 is installed on one end of the base 2, a first notch 5 for adapting to the inner pouring block 4 is provided at a position of the bottom plate 1 corresponding to the inner pouring block 4, the hinge body includes a fan connector 6, a small connecting rod 7, a long connecting rod 8, and a short connecting rod 9, wherein the fan connector 6 includes a vertical connecting seat 61 and a transverse connecting seat 62 which are integrally and vertically provided, the bottom end of the vertical connecting seat 61 is riveted with one end of the long connecting rod 8, the other end of the long connecting rod 8 is riveted on a second notch 12 of the bottom plate 1 by a sliding rivet 10, one end of the short connecting rod 9 is hinged with one end of the small connecting rod 7, the other end of the small connecting rod 7 is on the transverse connecting seat 62, the other end of the short connecting rod 9 is riveted with the middle part of the short connecting rod 4 is provided through the inner pouring block 11 and passes through the inner pouring block 4, and the middle part 13 is provided with an eccentric middle part 13.

And an eccentric nail is arranged on one side of the second notch in the middle of the bottom plate, and when the eccentric nail rotates to a certain angle towards the direction of the second notch, the movement range of the sliding rivet in the second notch can be limited, so that the overall maximum opening and closing angle of the hinge is controlled. Referring to fig. 20 in combination, c is that when the eccentric pin rotates to 90 degrees, the center of the eccentric pin and the center of the sliding rivet are collinear to form a dead point structure, and the eccentric pin cannot rotate at this time so as to limit the maximum opening angle of the hinge to 90 degrees. When the eccentric nail rotates outwards towards the second slot, the maximum angle is increased by 90-180 limit state (b in the figure), and the maximum angle is further increased to 180 degrees (a in the figure) which are the unlimited state of the opening angle. Further rotation can enable the hinge to complete the function effect of maximum angle limiting. To achieve the desired effect, the ends of the short links are bent upward to make enough room for the eccentric nails.

In one possible implementation, the other end of the base is provided with a C-shaped bayonet 21; and/or one side of the base is provided with a C-shaped bayonet 21. The base is provided with a positioning screw, is matched with a C-shaped bayonet structure on one side of the base to install the base on the window frame notch, and is matched with the corner positioning to realize quick positioning installation.

In one possible implementation, the middle of the transverse connection seat is riveted with a locking piece 24, and the locking piece is locked with the fan slot through rotation, so that the fan is installed.

Specifically, locking tab 24 has a bent stamping station, and the middle of the transverse connector seat of the fan connector is hollowed with an opening matched with the transverse connector seat, so that the fan connector can be locked with the fan notch by rotating the locking tab to be quickly installed with the fan, and further locked by a locking tab rivet 25.

The base is further provided with a base boss 201, and the base boss 201 is engaged with a corresponding notch on the bottom plate in an adapting manner, in addition, a guiding groove 202 is provided on the base corresponding to the second notch 12, and the guiding groove 202 is mainly used for reserving a space for guiding and sliding the sliding rivet 10. The specific structural shapes are not limited, and the drawings of the embodiments of the present invention are provided for illustrative purposes only.

Through window frame installation component and hinge main part components of a whole that can function independently design to can realize alone accomplishing the installation fast, during the concrete installation, make window frame installation component and hinge main part separation, earlier with bottom plate and base fix a position earlier and install in the window frame (as shown in fig. 5-7), wherein, window frame horizontal direction is provided with slot (fig. 6) for fix a position with window frame installation component and exempt from to punch the installation, need not extra screw and install fast. The window frame is provided with a bayonet in the vertical direction, and is matched, clamped, positioned and installed with a C-shaped bayonet on the base, so that the window frame is free from punching and is free from being quickly installed by screws. The hinge main body is sleeved with the fan connector and then the lock plate rivet at the bottom of the fan connector is screwed by a spanner to lock the lock plate fastened into the bottom of the notch of the fan, and then an installer holds up the fan to enable the sliding rivet and the inner reverse nail in the hinge to respectively slide into the corresponding notches on the bottom plate part in sequence (as shown in figure 8). Thereby realizing that one person can quickly complete the installation of the whole window, and being more convenient to install compared with the existing similar products.

The slot (shown in fig. 9) is also arranged on the horizontal direction of the window sash, so that the hinge main body is convenient to position and clamp, and the quick installation without punching and screws is realized. In addition, slots (as shown in fig. 10) are also formed in the vertical direction of the window sash, so that the hinge main body is convenient for fixing and installing the fan connector in a slot positioning and clamping manner in the vertical direction, namely, the hinge main body is fixed with the slots on the window sash in a matched and clamping manner through the inner grooves 27 formed in the two sides of the longitudinal connecting seat, and the hinge main body is free from punching and screw installation.

The bottom ends of the internal inverted nails and the sliding rivets are designed to be inclined planes, so that the internal inverted nails and the sliding rivets are easier to guide in when being convenient to install (see fig. 8-11).

In addition, the second notch on the bottom plate is an integral large notch, namely, one end is a large notch, the other end is a small notch, and the two notches are communicated, as shown in fig. 12, when the sliding rivet is installed in a split mode, the sliding rivet firstly passes through the large notch (upper diagram of fig. 12), and after the sliding rivet is installed, the sliding rivet enters the small notch (lower diagram of fig. 12) when the hinge moves, so that the hinge is opened and cannot fall off.

The inclined surface design of the internal reverse nails and the sliding rivets can also play the role of preventing falling-off of the internal reverse nails and the sliding rivets (shown in figure 16).

The invention is not particularly limited as long as the inclined plane concrete design forms of the bottom ends of the internal reverse nails and the sliding rivets can be conveniently led in, and the internal reverse anti-drop effect can be achieved after the hinges are installed. The drawings in the specification provide two possible specific structures of the sliding rivet (see fig. 22 and 23), and when the sliding rivet is used as one implementation scheme, the bottom end of the sliding rivet is designed into a T-shaped inclined plane, and the T-shaped inclined plane is matched with a guide groove of a base to realize limit and sliding. When the slide rivet structure shown in fig. 22 is adopted, as shown in fig. 15 and 16, the slide rivet can be pulled up when being fallen down within 0-70 degrees, and in this angular state, the falling-down preventing effect is not obvious. But in other angle states, the anti-falling effect can be completely achieved. Through the inclined plane structural design of the bottom, the notch can be conveniently led in the installation process, and the anti-falling effect in the inward falling state can be achieved after the hinge is installed. It should be noted that, the concrete form of the sliding rivet in the other drawings of embodiment 1 of the present invention is shown by way of example in fig. 22.

Similarly, the specific shape and design form of the inclined surface of the inverted nail are not particularly limited as long as the above technical effects of the present invention can be achieved.

In addition, in a possible implementation scheme, a limiting boss 66 is arranged on the outer side of one end of the longitudinal connecting seat, and the limiting boss 66 is matched with the bending opening 101 of the head part of the bottom plate 1 to limit.

The mode of spacing boss and bottom plate head trompil cooperation spacing fixed on the one hand provides the convenience for swift installation, on the other hand also plays the technical effect of falling anticreep in, as shown in figure 15.

In one possible implementation scheme, an adjusting cylinder 63 is arranged on the longitudinal connecting seat, an up-down adjusting mechanism is arranged in the adjusting cylinder 63, the up-down adjusting mechanism comprises a supporting column 14, steel balls 15 and an adjusting screw 16, the supporting column 14 is arranged at the end part of the long connecting rod 8, the top end of the supporting column 14 is provided with the steel balls 15, and the top parts of the steel balls 15 are abutted to the bottom part of the adjusting screw 16.

The end of the long connecting rod is provided with a support column, the support column and the fan connector are sleeved and can rotate mutually, steel balls are placed between the support column and the fan connector, the upper part of the adjusting cylinder is provided with a threaded hole and is connected with an adjusting screw, the adjusting screw is propped against the top of the steel balls, the adjusting screw is screwed to borrow the reaction force of the steel balls and the support column, the fan connector moves up and down relative to the support column to be adjusted, and the fan connector drives the window fan to be adjusted up and down, so that the problems of size deviation, back tilt angle and the like of the window fan are solved.

In one possible implementation, the longitudinal connecting seat 61 is further provided with a horizontal adjusting block 17, and the horizontal adjusting block 17 is fixed on the round hole 65 of the longitudinal connecting seat 61 through a flat end set screw 18.

Specifically, referring to fig. 13-14, the horizontal adjusting block 17 includes an adjusting block base 171 and an adjusting block boss tip 172, and the longitudinal connecting seat 61 is provided with a square hole 64 adapted to be clamped with the adjusting block boss tip 172.

The horizontal adjusting block can realize the pressure adjustment of the window sashes, and consists of the horizontal adjusting block and a screw, wherein the flat end set screw is screwed into the horizontal adjusting block, then the screw and the boss tip of the horizontal adjusting block are arranged in a square hole of a longitudinal connecting seat, and the boss tip of the adjusting block is riveted (press-riveted). Because the two ends of the flat end set screw are propped against the inner wall of the square hole, when a user uses the hexagonal wrench to screw the flat end set screw through the round hole, the horizontal adjusting block can axially move along the flat end set screw within a certain range. The horizontal adjusting block is driven to move by adjusting the flat end set screw, so that the window sash is driven to move, the distance between the sealing strips can be adjusted in a front-back direction of the window sash within a certain range, and the sealing performance of the window sash is improved, so that the pressure adjustment of the window sash is realized (as shown in figure 17).

Because the horizontal adjusting block penetrates into the window section bar notch along with the fan connector, the horizontal adjusting seat base is tightly matched with the window fan notch, so that the tightness between the hinge adjustable frame and the fan is improved, the extrusion degree of the adhesive tape is adjusted to achieve the effect of better air tightness and water tightness after the door and window are closed, and compared with the existing technical scheme in the market, the horizontal adjusting structure is more convenient to operate and better in lasting stability.

In one possible implementation manner, a threaded boss 19 is further arranged at one end of the base, and the adjusting screw 20 is matched with the threaded boss 19 to achieve adjustment of the window sash in the left-right direction.

The head and the tail of the adjusting screw are propped against two end faces of a square hole used for accommodating the threaded boss on the bottom plate, the adjusting screw is screwed to enable the bottom plate and the base to move horizontally mutually, the effect of adjusting the horizontal clearance of the frame fan is achieved, and common problems such as fan falling inclination angle are solved. The horizontal adjusting structure of similar products on the market is commonly arranged at the bottom of a window sash, especially in the application scene of a landing door and window, the bottom of the window sash is very inconvenient to adjust, and even can not be adjusted, and the adjusting mechanism of the scheme provides a more humanized solution.

In one possible embodiment, a climbing block 22 is riveted to the base plate 1 at one end thereof at the bottom of the long connecting rod 8 by means of a blind rivet 23.

The climbing block penetrates through the bottom plate to be riveted with the base, the bottom of the long connecting rod is towed up through the gradient of the climbing block to achieve the anti-falling effect, and the bottom of the long connecting rod climbs through the gradient of the climbing block, so that the climbing block plays a supporting role. When the bottom plate is horizontally adjusted, the climbing block is connected with the base to keep static. When the window sashes are closed, the heavy deflection deformation is mutually abutted against the top surface of the climbing block, so that the heavy deflection deformation and metal fatigue are relieved, and the service life and the bearing performance of the hinge are further improved.

With reference to fig. 21, through the design of the adjusting mechanism, the hidden type flat-open lower hinge three-dimensional adjusting function can be realized, the sealing performance of the window sashes is adjusted, and the problem of inclined angle fan falling is solved.

The gasket 28 is arranged on the contact surface of each connecting part of the hidden type flat-open lower hinge, and excessive friction damage in the movement process of each part can be avoided through the design of the gasket, so that the service life of the integral hinge is prolonged. In particular, when the gasket arrangement positions are different, the shape of the gasket follows the adaptive change. Such as a T-washer, disposed on the support post to accommodate the particular structural installation of the support post. The shape or structure of the gasket in other places is not explained in detail, as long as the technical effect achieved by the gasket can be achieved.

Example 2

Embodiment 2 is the same as the flat-open lower hinge of embodiment 1 in other structural components and cooperation, except that the flat-open lower hinge of embodiment 2 adopts the slide rivet structure shown in fig. 23, in this structure, the bottom inclined plane of the slide rivet is designed into a 7-shaped inclined plane, so that the slide rivet cooperation of the structure is adapted to achieve a better inward falling-preventing effect, the guiding groove of the base is also adaptively improved, and the guiding groove is specifically designed to have a space for the bottom inclined plane of the slide rivet to move in an inward falling state, and can limit the 7-shaped inclined plane not to fall out in the groove, thereby playing a role of preventing the inward falling-preventing effect in any angle.

As shown in fig. 24, an exploded view of a hidden casement lower hinge according to embodiment 2 of the present invention is shown, wherein the overall shape of the guide groove is adapted to the second notch, and an upward bottom inner groove is formed on one side of the inclined surface of the sliding rivet at the position of the guide groove opposite to the small notch of the second notch, when the sliding rivet slides in from the large notch, the sliding rivet enters the small notch, and the 7-shaped inclined surface is just clamped with the upward bottom groove of the guide groove, so that the sliding rivet can move in the upward bottom groove and cannot escape therefrom, and an inward falling preventing effect is achieved.

In example 2, the hinge body is sleeved with the fan connector and then the bottom locking plate rivet of the fan connector is screwed by a wrench to lock the bottom of the locking plate locked into the bottom of the notch of the fan, and then the installer holds up the fan to enable the sliding rivet and the inner reverse nail in the hinge to respectively slide into the corresponding notches on the bottom plate part in sequence (as shown in fig. 25-27).

Based on the specific structural design of the sliding rivet in embodiment 2 and the specific structural cooperation of the corresponding guide groove on the base, the sliding rivet can ensure that the sliding rivet has the anti-falling effect under any angle, and the anti-falling effect of the inclined surface of the bottom of the sliding hinge is shown from different angles respectively in combination with the attached drawings of the specification 28-34. That is, in any opening angle state, the upward detachment can not occur, and the use safety is ensured.

In order to meet the clearance requirement of the frame and sash parallel section bar and achieve the practical effect of opening 180 degrees, the lower hinge adopts a five-link movement track scheme with optimized size, so that the size of a core link is minimized to reduce the deflection deformation of the hinge, and the condition that the window sash is subjected to heavy falling is relieved, thereby enabling the bearing performance of the hinge to achieve a more ideal state.

The lower hinge of the invention is mainly divided into two parts, namely a hinge main body and a window frame installation component, wherein the window frame installation component comprises a bottom plate and a base, the base is riveted with the bottom plate through rivets, the upper head part of the base is provided with a C-shaped bayonet structure for being clamped into a corner of a frame notch for positioning, one side of the base is also provided with a C-shaped bayonet, and meanwhile, the base is provided with a positioning screw which is matched with the bayonet structure at one side of the base to install the base in the frame notch and then is matched with the corner for positioning to realize quick positioning installation. The end of the base is provided with a threaded boss, the hinge can be horizontally adjusted by screwing in an adjusting screw, an inner inverted block is further arranged between the head of the base and the bottom plate for split installation, and meanwhile, a second slot is formed in the middle of the base for sliding rivet installation of the split connecting rod. The base plate is also provided with a climbing block which is riveted on the base through a hollow rivet, the climbing block has a certain gradient inclined plane, the function of integrally lifting the hinge can be realized, and the anti-falling effect of the hinge is realized.

The hinge main body rivets the short connecting rod, the long connecting rod, the small connecting rod and the fan connector into a multi-connecting rod structure through rivets, so that the hinge main body can be opened for 180 degrees, and meanwhile, a space for pouring in the hinge is reserved. The end of the long connecting rod is riveted with a sliding rivet which is provided with a slope inclined plane design, the sliding rivet is conveniently led into a second notch of the base, meanwhile, the head of the long connecting rod is riveted with a supporting column, the fan connector is an L-shaped connecting seat, the fan connector comprises a transverse connecting seat and a longitudinal connecting seat, two sides of the longitudinal connecting seat are provided with inner grooves and are used for being inserted into the fan notch, an adjusting cylinder (particularly a long threaded hole) is arranged at the same time, the adjusting cylinder is connected with the supporting column in a long connection mode through a mounting adjusting screw and a steel ball, and the fan connector can realize up-down adjustment of the hinge by means of the reaction force of the steel ball and the supporting column through the adjusting screw. The vertical connecting seat head position is dug the square hole, and the side is equipped with the screw thread round hole, and the holding has one end to have the screw hole boss, and the other end is the horizontal regulation piece of protruding structure, with horizontal regulation piece embedding square downthehole, screw in flat end holding screw, insert fan connector simultaneously behind the fan notch cooperation, through adjusting flat end holding screw, drive the protruding structural activity of horizontal regulation piece bottom for the fan notch can be adjusted in the fore-and-aft direction. The fan connector is characterized in that a limiting boss is arranged on the outer side of one end of a longitudinal connecting seat of the fan connector, the limiting boss is matched with a bending opening of the head of the bottom plate and used for positioning when the fan connector is inverted, a locking plate is riveted at the middle part of a transverse connecting seat of the fan connector, the locking plate is provided with a bending punching table, the transverse connecting seat is provided with an opening matched with the bending punching table, and the fan connector can be locked with a fan notch through rotating the locking plate to be installed with a fan quickly.

And based on the hidden type flat-open lower hinge, the maximum opening angle can be adjusted, so that the phenomenon that the window sashes are excessively opened to cause inertia impact indoors is avoided.

The hidden type side-hung lower hinge provided by the invention has the advantages that the hinge main body is partially separated from the bottom plate part, so that the hinge has a larger inward tilting angle compared with similar products, and more window sash sizes and larger ventilation quantity are adapted. And split type mounting structure lets whole casement installation location more accurate, more convenient and fast, more saves the installation human cost, need not to additionally prepare the screw simultaneously and accomplish the installation debugging fast.

The hidden type side-hung lower hinge is suitable for being used on an inner side-hung lower hung window, and can be matched with a frame and fan parallel-level section bar.

The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.

Claims (10)

1. The hidden flat-open lower hinge is characterized by comprising a window frame installation component and a hinge main body, wherein the window frame installation component comprises a bottom plate and a base, the bottom plate is fixed with the base through a rivet, the base is fixed with the window frame through a tip holding screw, an inner pouring block is installed on one end of the base, the bottom plate corresponds to the inner pouring block, a first notch for adapting the inner pouring block is formed in the inner pouring block, the hinge main body comprises a fan connector, a small connecting rod, a long connecting rod and a short connecting rod, the fan connector comprises a vertical connecting seat and a transverse connecting seat which are integrally and vertically arranged, the bottom end of the vertical connecting seat is riveted with one end of the long connecting rod, the other end of the long connecting rod is riveted with the second notch of the bottom plate through a sliding rivet, one end of the short connecting rod is hinged with one end of the small connecting rod, the other end of the short connecting rod is riveted with the transverse connecting seat, the short connecting rod passes through the bottom plate through the inner pouring block and is riveted with the inner pouring block, and the middle part of the short connecting rod is hinged with one side of the second connecting rod is provided with an eccentric notch.

2. The hidden flat-open lower hinge according to claim 1, wherein an adjusting cylinder is arranged on the longitudinal connecting seat, an up-down adjusting mechanism is arranged in the adjusting cylinder, the up-down adjusting mechanism comprises a supporting column, steel balls and an adjusting screw, the supporting column is arranged at the end part of the long connecting rod, the steel balls are arranged at the top ends of the supporting column, and the tops of the steel balls are abutted to the bottom of the adjusting screw.

3. The hidden flat-open lower hinge of claim 1, wherein the second slot is an integrally sized slot.

4. The hidden flat-open lower hinge according to claim 1, wherein the longitudinal connecting seat is further provided with a horizontal adjusting block, and the horizontal adjusting block is fixed on the round hole of the longitudinal connecting seat through a flat end fastening screw.

5. The hidden flat-open lower hinge according to claim 4, wherein the horizontal adjusting block comprises an adjusting block base and an adjusting block boss tip, and the longitudinal connecting seat is provided with a square hole in fit and clamping connection with the adjusting block boss tip.

6. The hidden casement lower hinge according to claim 1, wherein an end portion of the base is further provided with a threaded boss, and the adjustment of the left and right directions of the window sash is achieved by matching the threaded boss with an adjusting screw.

7. The hidden flat-open lower hinge according to claim 6, wherein the other end of the base is provided with a C-shaped bayonet; and/or one side of the base is provided with a C-shaped bayonet.

8. The hidden casement lower hinge according to claim 1, wherein a climbing block is riveted to the bottom of the long link at one end of the base plate by a blind rivet.

9. The hidden flat-open lower hinge according to claim 1, wherein a limiting boss is arranged on the outer side of one end of the longitudinal connecting seat, and the limiting boss is matched with the bending opening of the bottom plate head to limit.

10. The hidden casement lower hinge according to claim 1, wherein a locking plate is riveted at the middle part of the transverse connecting seat, and the locking plate is locked with the fan slot by rotating the locking plate to realize the installation with the fan.