CN217380170U

CN217380170U - Hinge

Info

Publication number: CN217380170U
Application number: CN202220577179.7U
Authority: CN
Inventors: 王长安; 纪焕漳
Original assignee: Zhongshan Mingshunxiang Metal Products Co ltd
Current assignee: Zhongshan Mingshunxiang Metal Products Co ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-09-06
Anticipated expiration: 2032-03-16

Abstract

The utility model discloses a hinge, include: the hinge main body, one end of which is used for connecting with the fan body; the mounting unit is used for being connected with the frame body, movably connected to the other end of the hinge main body and in contact fit with the hinge main body; the mounting unit is configured to be adjustable in position relative to the hinge main body at least in the vertical direction, the mounting unit and the hinge main body have a first state and a second state, and in the first state, the mounting unit is pressed against the hinge main body and the relative positions of the mounting unit and the hinge main body are fixed; when the hinge is in the second state, the mounting unit loosens the hinge main body, and the relative position of the mounting unit and the hinge main body can be adjusted; the limiting structure is arranged between the hinge main body and the mounting unit; when the hinge body is in the first state, the limiting structure is configured to limit the hinge body to move downwards relative to the mounting unit, so that the phenomenon that the fan body falls down under the action of gravity is avoided, the stability is better, and the fan body is prevented from scraping the frame body.

Description

Hinge

Technical Field

The utility model relates to a hinge technical field, in particular to hinge.

Background

In the prior art, a sash body of a door or window is connected with a frame body through a hinge. In order to adjust the relative position between the sash body and the frame body of the door and window at will, the hinge is provided with a hinge main body and a mounting unit, one end of the hinge main body is connected with the sash body, the other end of the hinge main body is movably connected with the mounting unit, and the relative position of the hinge main body and the mounting unit can be adjusted at least in the vertical direction. However, as time goes up, when the fan body is influenced by gravity, the fan body drives the hinge main body to fall down, so that the fan body scrapes the frame body, and the stability is poor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a hinge, hinge is favorable to preventing the fan body because of receiving the gravity tenesmus, and stability is better.

According to the utility model discloses hinge, include: the hinge main body, one end of which is used for connecting with the fan body; the mounting unit is movably connected to the other end of the hinge main body and is in contact fit with the hinge main body; the mounting unit is configured to be adjustable in position relative to the hinge main body at least in the up-down direction, the mounting unit and the hinge main body have a first state and a second state, and in the first state, the mounting unit is pressed against the hinge main body and the relative positions of the mounting unit and the hinge main body are fixed; when the hinge body is in the second state, the mounting unit loosens the hinge body, and the relative position of the mounting unit and the hinge body is adjustable; the limiting structure is arranged between the hinge main body and the mounting unit; in the first state, the limiting structure is configured to limit the hinge main body from moving downwards relative to the mounting unit.

According to the utility model discloses hinge has following beneficial effect at least: adopt above-mentioned structure, along with the time increase, the pressure between installation element and the hinge main part reduces to lead to the installation element to reduce with the biggest stiction of hinge main part, consequently through having added limit structure, be less than the decurrent gravity that the hinge main part received when the biggest stiction, limit structure can restrict the relative installation element downstream of hinge main part, thereby avoided the fan body because of receiving the action of gravity the condition that the tenesmus appears, stability is better, has avoided the fan body scraping framework.

In some embodiments of the present invention, the limiting structure includes an installation component and a limiting component, the installation component is disposed on the hinge main body or the installation unit, and the limiting component is connected to the installation component; when the mounting piece is arranged on the hinge main body, the positions of the limiting piece and the mounting piece are relatively fixed, and the end part of the limiting piece abuts against the mounting unit; when the mounting member is disposed on the mounting unit, the positions of the limiting member and the mounting member are relatively fixed, and the end of the limiting member abuts against the hinge main body.

In some embodiments of the present invention, the limiting member is a first bolt, and the mounting member is provided with a first threaded hole in threaded connection with the first bolt.

In some embodiments of the present invention, the number of the mounting units is two, the number of the limiting structures is two, and two mounting units are disposed on the upper and lower sides of the hinge main body; wherein the mounting unit is connected to the hinge main body through a connection structure by which the mounting unit can be brought into the first state or the second state.

In some embodiments of the present invention, a fitting portion is provided on the hinge main body, the mounting unit includes a first mounting member and a second mounting member, and the fitting portion is sandwiched between the first mounting member and the second mounting member; the connecting structure comprises a connecting hole and a connecting piece, and gaps are formed between the connecting piece and the connecting hole in the vertical direction; the connecting hole set up in cooperation portion, the connecting piece wears to locate the connecting hole, and with first installed part with the cooperation is connected to the second installed part, in order with first installed part with the second installed part is close to in opposite directions and compresses tightly cooperation portion.

In some embodiments of the present invention, the hinge body comprises: a first page connected to the mounting unit; one end of the connecting body is rotatably connected with the first page body; and the second page body is connected with the other end of the connector, and a second mounting hole is formed in the second page body.

In some embodiments of the present invention, the second sheet comprises: the first fixing piece is provided with an avoidance through hole, and the second mounting hole is formed in the first fixing piece; the second fixing piece is arranged on one side of the first fixing piece in a manner of moving left and right; the connector penetrates through the avoiding through hole and is connected with the second fixing piece.

In some embodiments of the present invention, the first fixing member includes two fixing plates and two connecting plates, two the fixing plates are arranged at an interval from top to bottom, two the connecting plates are arranged at an interval from front to back and are all located two between the fixing plates, two the two ends of the connecting plates are respectively connected with two fixing plates to form the avoiding through hole.

In some embodiments of the present invention, two of the fixing plates and two of the connecting plates are configured as an integral structure.

In some embodiments of the present invention, two be provided with two clamping parts on the second mounting, the connector is provided with and can be located two grafting portion between the clamping part, two the clamping part with be provided with between the grafting portion and make the fast-assembling structure that the two is connected, the fast-assembling structure includes: the first hole group comprises two first fixing holes respectively arranged on the two clamping parts and a first strip-shaped hole arranged on the inserting part; the first avoidance channel is arranged on the inserting part and communicated with the first strip-shaped hole; the second hole group comprises a second fixing hole arranged on the inserting part and two second strip-shaped holes respectively arranged on the two clamping parts; the two second avoidance channels are respectively arranged on the two clamping parts and are respectively communicated with the two second strip-shaped holes; the first positioning rod piece sequentially penetrates through the two first fixing holes and is fixedly connected with the clamping part, and the first positioning rod piece can move along the first avoidance channel to be in clamping fit with the first strip-shaped hole; and the second positioning rod piece penetrates through the second fixing hole and is fixedly connected with the inserting part, and two ends of the second positioning rod piece can respectively move along the two second avoiding channels to be matched with the two second strip-shaped holes in a clamping manner.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a hinge according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a hinge according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

fig. 4 is an exploded view of a hinge according to an embodiment of the present invention;

FIG. 5 is a schematic view of the hinge assembly mounted to a sash of a door or window, wherein the first fastener is coupled to the sash;

FIG. 6 is a schematic cross-sectional view of FIG. 5;

reference numerals:

the hinge comprises a hinge main body 10, a matching part 11, a second row of teeth 111, a first page body 12, a connecting body 13, an inserting part 131, a second page body 14, a second mounting hole 141, a first fixing piece 142, an avoiding through hole 1421, a second fixing piece 143, a clamping part 1431, a fixing plate 1422 and a connecting plate 1423;

the mounting unit 20, the first mounting piece 21, the first mounting hole 211, the first row of teeth 212, the second through hole 212, the second mounting piece 22 and the second threaded hole 221;

the limiting structure 30, the mounting part 31, the first threaded hole 311 and the limiting part 32;

a connecting hole 41, a connecting member 42;

a fixed block 51, a sleeve 52 and a connecting bolt 53;

the first fixing hole 61, the first strip-shaped hole 62, the first avoiding channel 63, the second fixing hole 64, the second strip-shaped hole 65, the second avoiding channel 66, the first positioning rod 67 and the second positioning rod 68;

fan body 70, card slot 71.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1 to 6, the hinge according to the embodiment of the present invention includes: a hinge main body 10 having one end for being coupled with the fan body 70; at least one mounting unit 20 for connecting with the frame, the mounting unit 20 being movably connected to the other end of the hinge main body 10, and the mounting unit 20 being in contact fit with the hinge main body 10; the mounting unit 20 is configured to be adjustable in position relative to the hinge main body 10 at least in the up-down direction, and the mounting unit 20 and the hinge main body 10 have a first state in which the mounting unit 20 is pressed against the hinge main body 10 and the relative positions of the two are fixed; in the second state, the mounting unit 20 releases the hinge body 10 and the relative position of the two is adjustable; a limit structure 30 provided between the hinge body 10 and the mounting unit 20; in the first state, the stopper structure 30 is configured to be able to restrict the hinge main body 10 from moving downward relative to the mounting unit 20.

The side surfaces of the attachment unit 20 and the hinge body 10 are in contact with each other, that is, the side surfaces of the attachment unit 20 and the hinge body 10 are in contact with each other to generate a pressing force when they are attached and connected to each other.

According to the utility model discloses hinge, adopt above-mentioned structure, increase along with time, pressure between installation element 20 and the hinge main part 10 reduces, thereby lead to installation element 20 and the biggest static friction power of hinge main part 10 to reduce, consequently through having increased limit structure 30, be less than the decurrent gravity that hinge main part 10 received when the biggest static friction power, limit structure 30 can restrict hinge main part 10 and install element 20 downstream relatively, thereby avoided fan 70 because of the condition that the tenesmus appears receiving the action of gravity, stability is better, fan 70 scraping framework has been avoided.

It is understood that, as shown in fig. 1 to 4, in some embodiments of the present invention, the limiting structure 30 includes a mounting member 31 and a limiting member 32, the mounting member 31 is disposed on the hinge main body 10 or the mounting unit 20, and the limiting member 32 is connected to the mounting member 31; when the mounting member 31 is disposed on the hinge body 10, the positions of the limiting member 32 and the mounting member 31 are relatively fixed, and the end of the limiting member 32 abuts against the mounting unit 20; when the mounting device 31 is disposed on the mounting unit 20, the positions of the limiting member 32 and the mounting device 31 are relatively fixed, and the end of the limiting member 32 abuts against the hinge main body 10. When the hinge body 10 and the installation unit are in the first state, as time increases, the pressure between the hinge body 10 and the installation unit 20 decreases, so that the maximum static friction force decreases, the fan body 70 and the hinge body 10 both receive downward gravity, when the gravity is greater than the maximum static friction force, the hinge body 10 tends to move downward relative to the installation unit 20, that is, the fan body 70 tends to fall down, therefore, the end of the limiting member 32 abuts against the installation unit 20, the installation member 31 and the limiting member 32 are relatively fixed, so that the relative positions of the fan body 70 and the frame body are fixed, thereby avoiding the situation that the fan body 70 falls down due to gravity, the use is convenient, and the fan body 70 can be effectively supported and fixed.

Of course, in some embodiments, when the mounting member 31 is disposed on the mounting unit 20, the end of the limiting member 32 abuts against the hinge main body 10, which still has the above-mentioned effect.

As shown in fig. 1 to 4, in some embodiments of the present invention, the limiting member 32 is a first bolt, and the mounting member 31 is provided with a first threaded hole 311 in threaded connection with the first bolt. Adopt above-mentioned structure, connect in first screw hole 311 through first bolt spiro union, through first screw hole 311 and first bolt threaded connection cooperation to it is fixed not receiving the relative installed part 31 of external force effect time first bolt, thereby avoided the fan body 70 to receive the action of gravity and the phenomenon of tenesmus appears, simple structure, the dismouting and the manufacturing of being convenient for, installation and manufacturing cost are lower.

It should be noted that, in some embodiments of the present invention, the mounting member 31 is an integral structure with the hinge body 10.

Of course, in some embodiments, the limiting structure 30 may also include a first through hole disposed in the hinge body 10 and a protrusion penetrating through the first through hole, and the protrusion is provided with a supporting portion abutting against the lower end of the hinge body 10, and an end of the protrusion abuts against the mounting unit 20, so as to prevent the fan body 70 from falling down when the hinge body 10 and the mounting unit 20 slide relative to each other and are subjected to gravity.

It can be understood that, as shown in fig. 1 to 6, in some embodiments of the present invention, the number of the mounting units 20 is two, the number of the limiting structures 30 is two, and two mounting units 20 are disposed on the upper and lower sides of the hinge main body 10; wherein the mounting unit 20 is connected to the hinge main body 10 by a connection structure by which the mounting unit 20 can be brought into the first state or the second state. It can be understood that, in the above structure, the number of the connecting structure and the limiting structure 30 is two, and the upper and lower ends of the hinge main body 10 and the two mounting units 20 are adjusted in the up-down direction, the hinge main body 10 and the mounting units 20 are roughly adjusted by the connecting structure, and then the first threaded hole 311 of the limiting structure 30 and the first bolt are used for auxiliary fine adjustment. Not only can prevent the fan body 70 from falling due to gravity, but also can realize accurate adjustment, is beneficial to avoiding excessive adjustment of the hinge main body 10 and the installation unit 20, has high adjustment precision, enables the adjustment to be quicker, can further shorten the installation time of the fan body 70 of the door and window,

as shown in fig. 1, 2 and 4, in some embodiments of the present invention, the hinge main body 10 is provided with a fitting portion 11, the mounting unit 20 includes a first mounting member 21 and a second mounting member 22, and the fitting portion 11 is sandwiched between the first mounting member 21 and the second mounting member 22; the connecting structure comprises a connecting hole 41 and a connecting piece 42, and gaps are formed between the connecting piece 42 and the connecting hole 41 in the vertical direction; the connecting hole 41 is arranged on the matching part 11, and the connecting piece 42 passes through the connecting hole 41 and is connected and matched with the first mounting piece 21 and the second mounting piece 22 so as to enable the first mounting piece 21 and the second mounting piece 22 to approach towards each other and press the matching part 11. Adopt above-mentioned structure, the cooperation portion 11 clamp with hinge main part 10 is arranged in between first installed part 21 and the second installed part 22, and the cooperation through connecting hole 41 and connecting piece 42 is connected hinge main part 10 and installation element 20 coarse adjustment, first screw hole 311 is worn to establish by the first bolt of rethread, first screw hole 311 reciprocates relatively to first bolt, thereby realize hinge main part 10 and installation element 20's accurate regulation, at last rethread connecting piece 42 is close to first installed part 21 and second installed part 22 in order to compress tightly cooperation portion 11 relatively, with the fixed connection who accomplishes hinge main part 10 and installation element 20, moreover, the steam generator is simple in structure, and convenient installation.

It should be noted that, in some embodiments of the present invention, the first mounting part 21 is provided with a first mounting hole 211 and a second through hole 212, the second mounting part 22 is provided with a second threaded hole 221, the connecting member 42 is a second bolt, and the second bolt is inserted through the second through hole 212 and the connecting hole 41 of the first mounting part 21 and screwed into the second threaded hole 221 of the second mounting part 22; the first mounting hole 211 is fastened by a screw or the like to connect the first mounting member 21 with the frame body.

It can be understood that the connecting member 42 has a gap with the connecting hole 41 in the front-rear direction, so that the relative front-rear positions of the mounting unit 20 and the hinge body 10 can be adjusted, and the adaptability is good.

It is conceivable that, as shown in fig. 1 to 4, in some embodiments of the present invention, the first mounting member 21 is provided with a first row of teeth 212, and the engaging portion 11 is provided with a second row of teeth 111 engaged with the first row of teeth 212, so as to further increase the friction between the first mounting member 21 and the engaging portion 11 of the hinge main body 10, thereby improving the mounting stability.

It will be appreciated that, as shown in fig. 1-6, in some embodiments of the present invention, the hinge body 10 includes: a first sheet 12 connected to the mounting unit 20 by a connecting structure; a connecting body 13, one end of which is rotatably connected with the first page body 12 through a rotating shaft; the second page body 14, the second page body 14 is connected with the other end of the connector 13, the second page body 14 is provided with a second mounting hole 141, and the second page body 14 is fixedly connected with the fan body 70 through the cooperation of the second mounting hole 141 and a fastener (such as a screw, etc.).

The first sheet 12 is provided with engaging portions 11 at both ends.

It will be appreciated that, as shown in fig. 1, 2 and 4 to 6, in some embodiments of the invention, the second leaf 14 comprises: the first fixing member 142, the first fixing member 142 is provided with an avoidance through hole 1421, and the second mounting hole 141 is arranged on the first fixing member 142; the second fixing part 143, the second fixing part 143 can be set up on one side of the first fixing part 142 in a way of moving left and right; the connecting body 13 is connected to the second fixing member 143 through the avoiding through hole 1421. By adopting the structure, the second fixing piece 143 moves left and right relative to the first fixing piece 142, so that the first page body 12 is driven to move left and right close to or back to the first fixing piece 142, the left and right spacing between the first page body 12 and the first fixing piece 142 is adjusted, the installation error between the fan body 70 and the frame body can be adapted, the use is convenient, and the adaptability is good.

As shown in fig. 1, fig. 2 and fig. 4 to fig. 6, in some embodiments of the present invention, the first fixing member 142 includes two fixing plates 1422 and two connecting plates 1423, the two fixing plates 1422 are disposed at an upper and lower interval, the two connecting plates 1423 are disposed at a front and rear interval and are disposed between the two fixing plates 1422, two ends of the two connecting plates 1423 are respectively connected to the two fixing plates 1422 to form an avoiding through hole 1421, and the width of the avoiding through hole 1421 is adapted to the width of the connecting body 13. By adopting the structure, when the fan body 70 is installed, the clamping device matched with the first fixing part 142 is arranged on the fan body, the two fixing plates 1422 and the two connecting plates 1423 can customize the sizes of the two fixing plates 1422 and the two connecting plates 1423 according to the width of the groove reserved by a door and window manufacturer, the connecting plates 1423 can effectively shield the redundant gaps at the front side and the rear side of the connecting body 13 and the clamping groove 71, and the attractiveness is improved.

It should be noted that, when the fan body 70 in the prior art is installed, the slot 71 is disposed on the fan body, and the first fixing member 142 in the prior art only includes two fixing plates 1422, and the two fixing plates 1422 are respectively located at the upper side and the lower side of the length direction of the slot 71, so that when the width of the slot 71 is increased, the fixing plates 1422 are correspondingly increased, and thus, redundant gaps exist at the front and rear sides of the connecting body 13 and the slot 71, so that the installation is not attractive, and therefore, by additionally providing the two connecting plates 1423, redundant gaps exist at the front and rear sides of the connecting body 13 and the slot 71, so that the first fixing member 142 is attractive when installed.

In some embodiments of the present invention, the two fixing plates 1422 and the two connecting plates 1423 are configured as an integral structure, which is simple in structure and convenient to manufacture and install. The integral molding can be realized by stamping or injection molding.

Of course, in some embodiments, the two fixing plates 1422 and the two connecting plates 1423 may also be provided as a separate structure, and are detachably connected.

As shown in fig. 1, 2 and 4, in some embodiments of the present invention, the second fixing member 143 is slidably connected to the first fixing member 142 by a connecting member. The first fixing member 142, i.e., the fixing plate 1422, is provided with a third through hole, the second fixing member 143 is provided with a fourth through hole, the connecting assembly includes a fixing block 51, a sleeve 52 and a connecting bolt 53, the fixing block 51 is provided with a third threaded hole, at first, the connecting bolt 53 penetrates through the third through hole, the sleeve 52 is sleeved with the third bolt, the second fixing member 143 is sleeved outside the sleeve 52 through the fourth through hole in a manner of being capable of moving left and right, and the third bolt is screwed in the third threaded hole.

As shown in fig. 1, 2 and 4, in some embodiments of the present invention, two clamping portions 1431 are disposed on two second fixing members 143, the connecting body 13 is disposed with an inserting portion 131 capable of being located between the two clamping portions 1431, and a quick-assembly structure capable of connecting the two clamping portions 1431 and the inserting portion 131 is disposed between the two clamping portions 1431 and the inserting portion 131; the fast-assembling structure includes: a first hole group, which includes two first fixing holes 61 respectively disposed at the two clamping portions 1431 and a first strip-shaped hole 62 disposed at the inserting portion 131; the first avoidance channel 63 is arranged on the insertion part 131, and the first avoidance channel 63 is communicated with the first strip-shaped hole 62; a second hole group, which includes a second fixing hole 64 disposed on the inserting portion 131 and two second strip-shaped holes 65 disposed on the two holding portions 1431, respectively; two second avoidance channels 66 respectively arranged at the two clamping parts 1431, and the two second avoidance channels 66 are respectively communicated with the two second strip-shaped holes 65; the first positioning rod piece 67 sequentially penetrates through the two first fixing holes 61 and is fixedly connected with the clamping part 1431, and the first positioning rod piece 67 can move along the first avoidance channel 63 to be in clamping fit with the first strip-shaped hole 62; the second positioning rod 68 penetrates through the second fixing hole 64 and is fixedly connected with the insertion portion 131, and two ends of the second positioning rod 68 can respectively move along the two second avoiding channels 66 to be in clamping fit with the two second strip-shaped holes 65. Quick installation and disassembly are realized, the positioning is reliable, the relative movement in the connection process of the connecting body 13 and the second fixing piece 143 is avoided, and the installation stability and the convenience are improved.

It should be noted that, in some embodiments of the present invention, the first hole groups are set as two groups, and the second hole groups are set as one group, and of course, the numbers of the first hole groups and the second hole groups are not limited herein; at least one of the two first fixing holes 61 in the first hole group is provided with an internal thread, the first positioning rod member 67 is a positioning pin whose end is provided with an external thread, the second fixing hole 64 in the second hole group is provided with an internal thread, and the second positioning rod member 68 is a positioning pin whose middle is provided with an external thread.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims

1. The hinge is characterized by comprising

A hinge main body (10) having one end for being connected to the fan body (70);

at least one mounting unit (20) used for being connected with a frame body, wherein the mounting unit (20) is movably connected to the other end of the hinge main body (10), and the mounting unit (20) is in contact fit with the hinge main body (10);

the mounting unit (20) is configured to be adjustable in position relative to the hinge main body (10) at least in the up-down direction, the mounting unit (20) and the hinge main body (10) have a first state and a second state, and in the first state, the mounting unit (20) is pressed against the hinge main body (10) and the relative positions of the two are fixed; in the second state, the mounting unit (20) loosens the hinge main body (10) and the relative position of the two is adjustable;

a stopper structure (30) provided between the hinge main body (10) and the mounting unit (20);

in the first state, the stopper structure (30) is configured to be able to restrict the hinge main body (10) from moving downward relative to the mounting unit (20).

2. Hinge according to claim 1, characterized in that said limit structure (30) comprises an installation element (31) and a limit element (32), said installation element (31) being provided to said hinge body (10) or to said installation unit (20), said limit element (32) being connected to said installation element (31);

when the mounting member (31) is provided to the hinge main body (10), the positions of the limiting member (32) and the mounting member (31) are relatively fixed, and the end of the limiting member (32) abuts against the mounting unit (20);

when the mounting member (31) is provided to the mounting unit (20), the positions of the limiting member (32) and the mounting member (31) are relatively fixed, and the end of the limiting member (32) abuts against the hinge main body (10).

3. Hinge according to claim 2, characterized in that said stop element (32) is a first bolt and said mounting element (31) is provided with a first threaded hole (311) in threaded connection with said first bolt.

4. The hinge according to claim 1 or 3, wherein the number of the mounting units (20) is two, the number of the limiting structures (30) is two, and the two mounting units (20) are arranged on the upper and lower sides of the hinge main body (10);

wherein the mounting unit (20) is connected to the hinge body (10) by a connecting structure by which the mounting unit (20) can be brought into the first state or the second state.

5. Hinge according to claim 4, characterized in that said hinge body (10) is provided with an engagement portion (11), said mounting unit (20) comprising a first mounting element (21) and a second mounting element (22), said engagement portion (11) being interposed between said first mounting element (21) and said second mounting element (22);

the connecting structure comprises a connecting hole (41) and a connecting piece (42), and gaps are formed between the connecting piece (42) and the connecting hole (41) in the vertical direction;

the connecting hole (41) is arranged in the matching part (11), the connecting piece (42) penetrates through the connecting hole (41) and is connected and matched with the first installation piece (21) and the second installation piece (22) so as to enable the first installation piece (21) and the second installation piece (22) to be close to and press the matching part (11) oppositely.

6. Hinge according to claim 1, characterized in that said hinge body (10) comprises:

a first sheet body (12) connected to the mounting unit (20);

a connecting body (13), one end of which is rotatably connected with the first page body (12);

the second page body (14), the second page body (14) is connected with the other end of the connecting body (13), and a second mounting hole (141) is formed in the second page body (14).

7. Hinge according to claim 6, characterized in that said second leaf (14) comprises:

the first fixing piece (142), the first fixing piece (142) is provided with an avoidance through hole (1421), and the second mounting hole (141) is arranged on the first fixing piece (142);

the second fixing piece (143), the said second fixing piece (143) can be set up in one side of the said first fixing piece (142) in a way of moving left and right;

the connecting body (13) penetrates through the avoiding through hole (1421) and is connected with the second fixing piece (143).

8. The hinge according to claim 7, wherein said first fixing member (142) comprises two fixing plates (1422) and two connecting plates (1423), said two fixing plates (1422) are spaced up and down, said two connecting plates (1423) are spaced front and back and are located between said two fixing plates (1422), and two ends of said two connecting plates (1423) are respectively connected to said two fixing plates (1422) to form said escape through hole (1421).

9. Hinge according to claim 8, characterized in that said two fixing plates (1422) and said two connecting plates (1423) are configured as a single piece.

10. Hinge according to claim 7, characterized in that two clamping portions (1431) are provided on two second fixing elements (143), said connecting body (13) is provided with a plug-in portion (131) able to be positioned between two clamping portions (1431), a quick-assembly structure is provided between two clamping portions (1431) and said plug-in portion (131) to enable them to be connected, said quick-assembly structure comprises:

a first hole group, which comprises two first fixing holes (61) respectively arranged on the two clamping parts (1431) and a first strip-shaped hole (62) arranged on the inserting part (131);

the first avoidance channel (63) is arranged on the inserting part (131), and the first avoidance channel (63) is communicated with the first strip-shaped hole (62);

a second hole group, which comprises a second fixing hole (64) arranged on the inserting part (131) and two second strip-shaped holes (65) respectively arranged on the two clamping parts (1431);

two second avoidance channels (66) which are respectively arranged on the two clamping parts (1431), and the two second avoidance channels (66) are respectively communicated with the two second strip-shaped holes (65);

the first positioning rod piece (67) sequentially penetrates through the two first fixing holes (61) and is fixedly connected with the clamping part (1431), and the first positioning rod piece (67) can move along the first avoidance channel (63) to be in clamping fit with the first strip-shaped hole (62);

and the second positioning rod piece (68) penetrates through the second fixing hole (64) and is fixedly connected with the inserting part (131), and two ends of the second positioning rod piece (68) can respectively move along the two second avoiding channels (66) to be in clamping fit with the two second strip-shaped holes (65).