CN211258185U - Simple and stable hinge - Google Patents

Abstract

The utility model discloses a simple and easy firm hinge, including well barrel, the lower extreme of well barrel is uncovered, and upwards install down the plush copper from the uncovered department of lower extreme, the plush copper rotates to be installed in well barrel, the top connection is installed to the upper end of well barrel, the lower clutch is installed to the lower extreme of plush copper down, spacing hole has been seted up respectively on the lower part of top connection and the upper portion of lower clutch, the spacing hole of terminal surface about running through is seted up to the lower clutch, the top connection, a spacing post is inserted so that the top connection jointly in the spacing hole of plush copper, unable mutual rotation between lower clutch and the lower clutch. The utility model discloses directly install down the plush copper at well barrel internal rotation, the plush copper contacts with the lateral wall of well barrel or the top or the lower extreme of well barrel down for the atress is more reasonable, and the hinge is also more firm, thereby bearing capacity is strong, and the load capacity is big, and is durable, and whole hinge is rational in infrastructure, simple, and has guaranteed the life of hinge.

Description

Simple and stable hinge

Technical Field

The utility model relates to a building equipment technical field especially relates to a simple and easy firm hinge.

Background

The hinge is a common rotating connecting component and is often used in devices such as doors and windows. The existing hinge is not reasonable enough in structure, the simple hinge is poor in bearing capacity, small in load capacity, easy to wear and not good in stability, short in service life, difficult to follow the service life of a device and often required to be replaced, and in order to enhance the bearing capacity, the hinge is often required to be complex, so that the problems of complex structure, inconvenience in installation, replacement and the like are caused.

SUMMERY OF THE UTILITY MODEL

Not enough more than to, the utility model provides a simple and easy firm hinge rational in infrastructure, simple, bearing capacity is strong.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a simple and easy firm hinge, is including well barrel, be equipped with the hinge ear on the lateral wall of well barrel, the lower extreme of well barrel is uncovered to upwards install down the plush copper from the uncovered department of lower extreme, the plush copper rotates to be installed in well barrel down, the top connection is installed to the upper end of well barrel, the lower clutch is installed to the lower extreme of plush copper down, spacing hole has been seted up respectively on the lower part of top connection and the upper portion of lower clutch, the spacing hole of terminal surface about running through is seted up to the plush copper down, insert a spacing post so that jointly in the spacing hole of top connection, lower clutch and lower plush copper unable mutual rotation between head, lower clutch and the lower clutch.

Preferably, the lower end opening of the middle cylinder body is a circular groove, and the lower raised head is provided with a lower raised head protrusion which is positioned in the circular groove and can rotate in the circular groove; or the side wall of the end part of the lower end opening of the middle cylinder body is provided with an annular groove, and the lower convex head is provided with a lower convex head protrusion which is positioned in the annular groove and can rotate in the annular groove.

Preferably, a rotating bearing is arranged between the lower raised head and the side wall of the middle cylinder, the lower raised head is fixedly connected with the outer periphery of the rotating bearing, and the side wall of the middle cylinder is fixedly connected with the inner periphery of the rotating bearing.

Preferably, the lower raised head comprises a lower raised head and a lower raised head body which are arranged in a split mode, pin holes or screw holes are formed in the lower raised head and the lower raised head body respectively, pins or screws are inserted into the pin holes of the lower raised head and the lower raised head body, boss structures are formed in the side walls of the lower raised head and the middle barrel body respectively, and the rotating bearing is installed on the boss structures of the lower raised head and the side walls of the middle barrel body.

Preferably, a pressure bearing is arranged between the top end of the lower convex head protrusion and the middle cylinder body.

Preferably, the upper part of the upper joint is provided with a pressing hole, the pressing hole is larger than the limiting hole of the upper joint so as to facilitate the limiting column to pass through, and a pressing piece is arranged in the pressing hole in a matching manner; the cross section of the limiting hole of the upper joint, the lower joint and the lower raised head is in a shape formed by combining a straight line and an arc, the shape of the cross section of the limiting column is consistent with that of the limiting hole, and the upper end of the limiting column is provided with a threaded hole.

Preferably, the upper part of the middle cylinder body is rotatably provided with an upper raised head, the upper joint is arranged on the upper end surface of the upper raised head, and the upper raised head is provided with a limiting hole which penetrates through the upper end surface and the lower end surface and is matched with the limiting column; an upper connector T-shaped groove is formed in the side face of the bottom of the upper connector, an upper raised head T-shaped groove is formed in the side face of the top of the upper raised head corresponding to the upper connector T-shaped groove, and a matched H-shaped bolt is inserted between the upper connector T-shaped groove and the upper raised head T-shaped groove.

Preferably, the upper joint is provided with a radial threaded hole at a position corresponding to the limiting hole, and a pressing bolt for abutting against the limiting column is arranged in the threaded hole in a matching manner.

Preferably, the lower end of the lower raised head is provided with radially distributed grooves, the upper end of the lower joint is provided with radially distributed protrusions matched with the grooves, or the lower end of the lower raised head is provided with radially distributed protrusions, and the upper end of the lower joint is provided with radially distributed grooves matched with the protrusions.

Preferably, the outer periphery and the inner periphery of the rotating bearing are respectively provided with a groove which is axially distributed, the side walls of the lower convex head and the middle cylinder body are correspondingly provided with a matched convex, or the outer periphery and the inner periphery of the rotating bearing are respectively provided with a convex which is axially distributed, and the side walls of the lower convex head and the middle cylinder body are correspondingly provided with a matched groove.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a simple and easy firm hinge, the plush copper is installed down directly at well barrel internal rotation, when the hinge uses, plush copper contacts with the lateral wall of well barrel or the top or the lower extreme of well barrel down, the atress of hinge is mainly on the lower clutch, lower hasp and well barrel, make the atress more reasonable, the hinge is also more firm, thereby bearing capacity is strong, the load capacity is big, durable, whole hinge is rational in infrastructure, simple, and the life of hinge has been guaranteed, not only be applicable to conventional rotating devices such as door and window, still be applicable to various heavy rotating devices.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is an isometric cross-sectional view of FIG. 1;

fig. 4 is a schematic view of the construction of the lower adapter and the lower nose;

FIG. 5 is a schematic structural view of a spacing column;

FIG. 6 is a schematic structural view of embodiment 2;

FIG. 7 is an exploded view of FIG. 6;

FIG. 8 is an isometric cross-sectional view of FIG. 6;

FIG. 9 is a schematic structural view of the middle cylinder, the rotary bearing and the lower boss protrusion;

FIG. 10 is a schematic structural view of example 3;

FIG. 11 is an exploded view of FIG. 10;

FIG. 12 is an isometric cross-sectional view of FIG. 10;

FIG. 13 is a schematic structural view of example 4;

FIG. 14 is an exploded view of FIG. 13;

FIG. 15 is an isometric cross-sectional view of FIG. 13;

FIG. 16 is a schematic structural view of example 5;

FIG. 17 is an exploded view of FIG. 16;

fig. 18 is an isometric cross-sectional view of fig. 16.

Wherein the labels shown in the figures are: 1-upper joint; 2-middle cylinder; 3-lower joint; 4-hinge lug; 5-an annular groove; 6-raising the head; 61-upper stud bearing matching projection; 7-lower raised head; 71-lower stud bumps; 72-lower cam body; 73-lower lug groove; 74-lower stud bearing mating projection; 8-a rotating bearing; 81-rotating bearing grooves; 9-a limiting column; 10-a pin; 11-a pressure bearing; 12-a compaction bore; 13-a compression member; 14-a hold-down bolt; 15-upper joint T-shaped groove; 19-circular groove; 16-lower tab projection; 17-an upper convex T-shaped slot; 18-H shaped bolt; 19-circular groove; 20-circular groove and bulge.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

Referring to fig. 1 to 5, a preferred embodiment of the present invention provides a simple and stable hinge, which includes a middle cylinder 2, an upper joint 1 located above the middle cylinder 2, and a lower joint 3 located below the middle cylinder 2, wherein the middle cylinder 2 is of a cylindrical structure, and hinge lugs 4 are integrally disposed on the outer side wall of the middle cylinder 2. In the preferred embodiment, the hinge lug 4 is a square straight plate-shaped structure, while in other embodiments, the hinge lug 4 may be an arc plate-shaped structure or a prismatic plate-shaped structure, which may be determined according to actual use.

With continued reference to fig. 1 to 5, the lower end of the middle cylinder 2 is open, a circular groove 19 is formed at the open, the circular groove 19 extends to the upper end of the middle cylinder 2, the middle cylinder is provided with a lower protrusion 7 from the open at the lower end, the lower protrusion 7 is in a circular two-layer boss structure, the lower protrusion 7 is rotatably installed in the middle cylinder 2, specifically, the lower protrusion 7 is provided with a lower protrusion 71 which is located in the circular groove 19 and can rotate in the circular groove 19, the outer diameter of the lower protrusion 71 is identical to the inner diameter of the circular groove 19, the lower protrusion 71 extends to the upper end of the middle cylinder 2, and the lower protrusion 71 interacts with the circular groove 19, so that the lower protrusion 7 and the middle cylinder 2 can rotate mutually. The upper end of well barrel 2 is seal structure, and the open through-hole of 2 lower extremes of barrel in the intercommunication has been seted up in center department, top connection 1 is installed to well barrel 2 upper end, lower clutch 3 is installed to the lower extreme of lower clutch 7, spacing hole has been seted up respectively on the lower part of top connection 1 and the upper portion of lower clutch 3, lower clutch 7 is equipped with the spacing hole of terminal surface about running through, top connection 1, lower clutch 3, insert a spacing post 9 jointly in the spacing hole of lower clutch 7 so that top connection 1, unable rotation each other between lower clutch 3 and the lower clutch 7. The size of the through hole at the upper end of the middle cylinder body 2 is larger than that of the limiting column 9, namely, the middle cylinder body 2 is not contacted with the limiting column 9.

When implementing, in the use commonly used, the utility model discloses an upper joint 1 and lower joint 3 are generally fixed mutually with external device, if with two upper and lower external tubes (hollow tubular structure) looks fixed connection of external device, at this moment, upper joint 1 and lower joint 3 respectively fixed mounting take over on, and under spacing hole and spacing post 9's effect, upper joint 1, lower joint 3 and lower plush copper 7 do not rotate mutually, well barrel 2 is through the interact of circular slot 19 with the protruding 71 of lower plush copper, can with upper joint 1, lower joint 3 and lower plush copper 7 realize the rotation each other to realize rotating the function of hinge.

The upper portion of top connection 1 is seted up and is pressed hole 12, and it is greater than the spacing hole of top connection 1 so that spacing post 9 passes to compress tightly the hole 12 and in the matching be equipped with compressing tightly 13. The pressing hole 12 is a threaded hole, the pressing piece 13 is a bolt, the bolt can seal up the limiting hole, the limiting column 9 can be pressed if necessary, a good sealing effect is achieved, and a good waterproof and dustproof function can be achieved.

Referring to fig. 5, the cross section of the limiting hole of the upper joint 1, the lower joint 3 and the lower joint 7 is in a shape synthesized by a straight line and an arc, that is, the side surface of the limiting hole is formed by a plane and an arc surface, the cross section of the limiting column 9 is in accordance with the shape of the limiting hole, and the structure ensures that the limiting column 9 does not rotate with the upper joint 1, the lower joint 3 and the lower joint 7 on the one hand, and is convenient for installing the limiting column 9 on the other hand. The upper end of the limit column 9 is provided with a threaded hole. In some use scenes, the upper joint 1 and the lower joint 3 are installed in the external pipe, the external pipe is fixed in advance, so the upper joint 1 and the lower joint 3 are installed on the external pipe, the middle cylinder body 2, the lower joint 7 and the like are installed between the upper joint 1 and the lower joint 3 together, and finally the limiting column 9 is installed, the external pipe has a certain length, so when the limiting column 9 is installed (namely, the limiting column 9 is sequentially inserted into the limiting holes of the upper joint 1, the lower joint 7 and the lower joint 3 during installation), the limiting column 9 is not easy to install. Set up the screw hole this moment in the upper end of spacing post 9, use an outside member, the tip of this member is equipped with the screw hole assorted external screw thread with spacing post 9 to the realization is fixed spacing post 9 on this member temporarily, is equivalent to extending spacing post 9 temporarily, is convenient for insert spacing downthehole with spacing post 9, unscrews this member after the installation and can realize member and spacing post 9's separation.

In some preferred embodiments, the upper joint 1 is provided with a radial threaded hole at a position corresponding to the position of the limiting hole, and a pressing bolt 14 for abutting against the limiting column 9 is arranged in the threaded hole in a matching manner. When the installation is implemented, the limiting column 9 is firstly installed on the upper joint 1, the radial threaded hole of the upper joint 1 is not in the external pipe at the moment, the bottom end of the limiting column 9 is not beyond the bottom of the upper joint 1, the compression bolt 14 is screwed to press the limiting column 9, the limiting column 9 cannot be moved firstly, then after the middle cylinder body 2, the lower joint 7 and the like are placed, the compression bolt is unscrewed to remove the limitation on the limiting column 9, and the limiting column 9 can be smoothly moved downwards and inserted into the limiting holes of the lower joint 3 and the lower joint 7. The arrangement helps to solve the problem that the limiting column 9 is not easy to insert into the limiting hole when the external connecting pipe is too long. In order to facilitate the installation and the positioning of the upper joint 1 and the lower joint 3 on the external connection pipe, the upper joint 1 and the lower joint 3 adopt a double-layer circular truncated cone step type structure, the upper joint 1 is of a structure with a small upper part and a large lower part, the small upper part is inserted into the external connection pipe in a matching manner, the large lower part is a convex edge, the size of the convex edge is larger than the inner diameter of the external connection pipe, the convex edge cannot enter the external connection pipe, and the positioning is facilitated. At this time, the radial screw hole formed in the upper joint 1 at a position corresponding to the stopper hole may be formed in a large portion of the lower portion of the upper joint 1. The lower joint 3 is of a structure with a large upper part and a small lower part, the small lower part is inserted into the external connecting pipe in a matching way, the large upper part is a convex edge, the size of the convex edge is larger than the inner diameter of the external connecting pipe, and the convex edge cannot enter the external connecting pipe. In order to be fixed mutually with the outer union pipe, it is protruding to be equipped with the side along axial distribution on the upper portion of top connection 1 and the side of the lower part of lower clutch 3 respectively, be equipped with the recess on the corresponding outer union pipe, top connection 1 and lower clutch 3 insert the outer union pipe in order to realize the installation along the recess of outer union pipe during the installation, can enough be convenient for the installation under this mode, make top connection 1 and lower clutch 3 can fixed mounting in the outer union pipe and not rotate, the counterpoint (spacing hole is irregular) in the spacing hole of top connection 1 and lower clutch 3 of being convenient for again (need the counterpoint just can be convenient for spacing post 9 to insert).

Referring to fig. 1 to 3, in the preferred embodiment, the lower end of the lower flange 7 is provided with radially distributed grooves, and the upper end of the lower flange 3 is provided with radially distributed protrusions matching the grooves. When mounted, the projection at the upper end of the lower connector 3 is also located just inside the recess at the lower end of the lower projection 7. Referring to fig. 2 to 4, the lower end of the lower tab 7 is provided with radially distributed grooves, which are denoted as lower tab grooves 73, the upper end of the lower tab 3 is provided with radially distributed lower tab projections 16 matching the lower tab grooves 73, and when being installed, the lower tab projections 16 are located in the lower tab grooves 73. Through this kind of setting, can enough be convenient for the counterpoint installation of lower clutch 3 and lower cam 7 to the counterpoint in the spacing hole of lower clutch 3 and lower cam 7 guarantees the smooth installation of spacing post 9, also can prevent the rotation each other of lower clutch 3 and lower cam 7, shares the pressure of spacing post 9.

Example 2

Different from embodiment 1, referring to fig. 6 to 9, in the preferred embodiment, a rotary bearing 8 is disposed between the lower cam 7 and the side wall of the middle cylinder 2, the lower cam 7 is fixedly connected to the outer circumference of the rotary bearing 8, and the side wall of the middle cylinder 2 is fixedly connected to the inner circumference of the rotary bearing 8.

Specifically, with reference to fig. 6 to 9, the lower protrusion 7 includes a lower protrusion 71 and a lower protrusion body 72, which are separately arranged, pin holes are respectively formed in the lower protrusion 71 and the lower protrusion body 72, a pin 10 is inserted into the pin holes of the lower protrusion 71 and the lower protrusion body 72, boss structures are respectively formed on the lower protrusion 71 and the side wall of the middle cylinder 2, and the rotating bearing 8 is installed on the boss structures on the lower protrusion 71 and the side wall of the middle cylinder 2. When the lower lug boss 71 is installed, the lower lug boss 71 is firstly placed in the circular groove 19 of the middle cylinder body 2, then the rotating bearing 8 is installed on the boss structures of the lower lug boss 71 and the side wall of the circular groove 19, the lower lug boss 71 is fixedly connected with the outer periphery of the rotating bearing 8, the side wall of the circular groove 19 is fixedly connected with the inner periphery of the rotating bearing 8, then the lower lug body 72 is placed on the lower lug boss 71, pin holes of the lower lug boss 71 and the pin holes of the lower lug boss 72 are aligned with each other, and then the pin 10 is inserted into the pin holes of the lower lug boss 71 and the lower lug body 72, so that the pin 10 is also inserted into the pin holes of the lower lug body 72, and the lower lug boss 72 and the lower lug boss 71 are mutually fixed to complete. The pin holes may be provided in plural to withstand a large torsion force. Set up rolling bearing 8, can realize well barrel 2 and lower clutch 3 and the smooth and easy rotation of lower flange 7, strengthen hinge bearing capacity, extension hinge life.

With continued reference to fig. 7 and 8, a pressure bearing 11 is disposed between the top end of the lower cam projection 71 and the bottom of the circular groove 19. The pressure bearing 11 is arranged, so that bearing can be better realized, the bearing capacity of the hinge is enhanced, the load capacity of the hinge is improved, and the hinge is ensured to be durable for a long time.

Referring to fig. 8 and 10, the outer circumference and the inner circumference of the rotating bearing 8 are respectively provided with two axially distributed grooves, which are respectively designated as rotating bearing grooves 81, and are symmetrically distributed, and the lower cam protrusions 71 and the side walls of the circular groove 19 are correspondingly provided with two matched protrusions, which are respectively designated as lower cam bearing matching protrusions 74 and circular groove protrusions 20, which are respectively designated as two symmetrical distributed. The arrangement in which the lower cam bearing mating projection 74 and the circular groove projection 20 are matingly received in the rolling bearing recess 81 facilitates the installation of the rolling bearing 8, ensures that the inner race of the rolling bearing 8 does not rotate with the lower cam 7, and that the outer race of the rolling bearing 8 does not rotate with the side wall of the circular groove 19 of the middle cylinder 2.

In other preferred embodiments, the outer circumference and the inner circumference of the rotating bearing 8 are respectively provided with axially distributed protrusions, the lower convex protrusion 71 and the side wall of the circular groove 19 are correspondingly provided with matched grooves, or similar protrusion and groove forms are also possible.

Example 3

Different from embodiment 1, please refer to fig. 10 to 12, in the preferred embodiment, an annular groove 5 is formed on a side wall of an end portion of the middle cylinder 2 with the lower end opened, the lower protrusion 7 is provided with a lower protrusion 71 located in the annular groove 5 and capable of rotating in the annular groove 5, at this time, the lower protrusion 71 is annular and is located in the annular groove 5, the lower protrusion 71 extends to an upper end portion of the middle cylinder 2, and the lower protrusion 71 interacts with the annular groove 5, so that the lower protrusion 7 and the middle cylinder 2 can rotate mutually. The annular groove 5 is formed, so that the inner side and the outer side of the lower convex protrusion 71 are in contact with the middle cylinder body 2, the hinge is stressed more reasonably, and the hinge is more stable, so that the hinge is strong in bearing capacity, large in load capacity, firm and durable.

Example 4

Different from the embodiment 2, please refer to fig. 13 to 15, in the preferred embodiment, an annular groove 5 is formed on a side wall of an end portion of the middle cylinder 2 with the lower end opened, the lower protrusion 7 is provided with a lower protrusion 71 located in the annular groove 5 and capable of rotating in the annular groove 5, at this time, the lower protrusion 71 is annular and is located in the annular groove 5, the lower protrusion 71 extends to an upper end portion of the middle cylinder 2, and the lower protrusion 71 interacts with the annular groove 5, so that the lower protrusion 7 and the middle cylinder 2 can rotate mutually. In the preferred embodiment, a rotary bearing 8 is mounted between the lower nose 7 and the inside side wall of the annular groove 5 of the intermediate cylinder 2. The annular groove 5 is formed, so that the inner side and the outer side of the lower convex protrusion 71 are in contact with the middle cylinder body 2, the hinge is stressed more reasonably, and the hinge is more stable, so that the hinge is strong in bearing capacity, large in load capacity, firm and durable. The pressure bearing 11 is installed between the top end of the lower tab projection 71 and the bottom of the annular groove 5. The rotary bearing 8 is installed between the lower tab projection 71 and the side wall of the annular groove 5.

Example 5

Different from embodiment 3, please refer to fig. 16 to 18, in the preferred embodiment, an upper protruding head 6 is rotatably mounted on the upper portion of the middle cylinder 2, a circular groove is formed on the upper end surface of the middle cylinder 2 and is communicated with the bottom opening of the middle cylinder 2 through a through hole, the upper protruding head 6 is mounted in the groove in a matching manner and is connected with the side wall of the upper end portion of the middle cylinder 2 through a rotating bearing 8, the upper protruding head 6 is fixedly connected with the inner circumference of the rotating bearing 8, and the side wall of the middle cylinder 2 is fixedly connected with the outer circumference of the rotating bearing 8. The outer periphery and the inner periphery of the rotating bearing 8 are respectively provided with two grooves which are distributed axially and are marked as rotating bearing grooves 81, the grooves are distributed symmetrically, the side walls of the upper head 6 and the upper end 2 of the middle cylinder body are correspondingly provided with matched bulges which are respectively marked as an upper head bearing matching bulge 61 and a middle cylinder body bulge 20, and the grooves are distributed symmetrically. During installation, the upper cam bearing matching protrusion 61 and the middle barrel protrusion 20 are installed in the rotating bearing groove 81 in a matching mode, the installation of the rotating bearing 8 is facilitated, the inner ring of the rotating bearing 8 can be guaranteed not to rotate with the upper cam 6, and the outer ring of the rotating bearing 8 is guaranteed not to rotate with the side wall of the middle barrel 2.

The upper connector 1 is arranged on the upper end surface of the upper raised head 6, the upper end of the upper raised head 6 is provided with radially distributed grooves, the lower end of the upper connector 1 is provided with radially distributed bulges matched with the grooves, and during installation, the bulges at the upper end of the upper connector 1 are also just positioned in the grooves at the upper end of the upper raised head 6. The upper raised head 6 is provided with a limiting hole which penetrates through the upper end surface and the lower end surface and is matched with the limiting column 9, so that the upper joint 1, the upper raised head 6, the lower raised head 7 and the lower joint 3 can rotate together or can not rotate together. An upper joint T-shaped groove 15 is formed in the side face of the bottom of the upper joint 1, an upper raised head T-shaped groove 17 is formed in the position, corresponding to the upper joint T-shaped groove 15, on the side face of the top of the upper raised head 6, and a matched H-shaped bolt 18 is inserted between the upper joint T-shaped groove 15 and the upper raised head T-shaped groove 17. Because the upper joint 1 is fixed on external devices such as an external connecting pipe, the upper convex head 6 can be deviated downwards due to reasons such as abrasion after being used for a long time, so that the upper convex head 6 is separated from the upper joint 1, the mutual fixation of the upper convex head 6 and the upper joint 1 is not facilitated, and the waterproof and dustproof effects of the hinge are also not facilitated. The H-shaped bolt 18 is inserted into the upper connector T-shaped groove 15 and the upper raised head T-shaped groove 17, so that the upper raised head 6 and the upper connector 1 cannot axially move mutually, and the upper raised head 6 and the upper connector 1 can be effectively prevented from being separated. A threaded hole is formed in the outward side of the H-shaped bolt 18, so that the H-shaped bolt 18 can be conveniently disassembled and assembled.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a simple and easy firm hinge, includes well barrel (2), be equipped with hinge ear (4), its characterized in that on the lateral wall of well barrel (2): the lower end of the middle barrel body (2) is open, a lower raised head (7) is upwards installed from the lower end opening, the lower raised head (7) is rotatably installed in the middle barrel body (2), an upper connector (1) is installed at the upper end of the middle barrel body (2), a lower connector (3) is installed at the lower end of the lower raised head (7), limiting holes are respectively formed in the lower portion of the upper connector (1) and the upper portion of the lower connector (3), the lower raised head (7) is provided with limiting holes penetrating through the upper end face and the lower end face, and a limiting column (9) is jointly inserted into the limiting holes of the upper connector (1), the lower connector (3) and the lower raised head (7) so that the upper connector (1), the lower connector (3) and the lower raised head (7) cannot rotate mutually.

2. The simple and stable hinge according to claim 1, characterized in that: the lower end of the middle barrel body (2) is opened to form a circular groove (19), and the lower raised head (7) is provided with a lower raised head protrusion (71) which is positioned in the circular groove (19) and can rotate in the circular groove (19); or the side wall of the end part of the lower end opening of the middle cylinder body (2) is provided with an annular groove (5), and the lower raised head (7) is provided with a lower raised head protrusion (71) which is positioned in the annular groove (5) and can rotate in the annular groove (5).

3. The simple and stable hinge according to claim 1, characterized in that: a rotating bearing (8) is arranged between the lower raised head (7) and the side wall of the middle barrel body (2), the lower raised head (7) is fixedly connected with the outer periphery of the rotating bearing (8), and the side wall of the middle barrel body (2) is fixedly connected with the inner periphery of the rotating bearing (8).

4. A simple stable hinge according to claim 3, characterized in that: the lower raised head (7) comprises a lower raised head (71) and a lower raised head body (72) which are arranged in a split mode, pin holes or screw holes are formed in the lower raised head (71) and the lower raised head body (72) respectively, pins (10) or screws are inserted into the pin holes of the lower raised head (71) and the lower raised head body (72), boss structures are formed in the side walls of the lower raised head (71) and the middle barrel body (2) respectively, and the rotating bearing (8) is installed on the boss structures of the lower raised head (71) and the side walls of the middle barrel body (2).

5. The simple and stable hinge according to claim 2 or 4, characterized in that: and a pressure bearing (11) is arranged between the top end of the lower convex head bulge (71) and the middle cylinder body (2).

6. The simple and stable hinge according to claim 1, characterized in that: a compaction hole (12) is formed in the upper part of the upper joint (1), the compaction hole is larger than a limiting hole of the upper joint (1) so that the limiting column (9) can penetrate through the compaction hole (12), and a compaction piece (13) is arranged in the compaction hole (12) in a matching manner; the cross section of the limiting hole of the upper joint (1), the cross section of the lower joint (3) and the cross section of the limiting hole of the lower raised head (7) are in a shape formed by combining a straight line and an arc, the shape of the cross section of the limiting column (9) is consistent with the shape of the limiting hole, and the upper end of the limiting column (9) is provided with a threaded hole.

7. The simple and stable hinge according to claim 1, characterized in that: an upper raised head (6) is rotatably mounted at the upper part of the middle barrel body (2), the upper joint (1) is mounted on the upper end surface of the upper raised head (6), and the upper raised head (6) is provided with a limiting hole which penetrates through the upper end surface and the lower end surface and is matched with the limiting column (9); an upper connector T-shaped groove (15) is formed in the side face of the bottom of the upper connector (1), an upper raised head T-shaped groove (17) is formed in the side face of the top of the upper raised head (6) in a position corresponding to the upper connector T-shaped groove (15), and a matched H-shaped bolt (18) is inserted between the upper connector T-shaped groove (15) and the upper raised head T-shaped groove (17) together.

8. The simple and stable hinge according to claim 1, characterized in that: the upper joint (1) is provided with a radial threaded hole at a position corresponding to the limiting hole, and a pressing bolt (14) used for abutting against the limiting column (9) is matched in the threaded hole.

9. The simple and stable hinge according to claim 1, characterized in that: the lower end of the lower raised head (7) is provided with radially distributed grooves, the upper end of the lower connector (3) is provided with radially distributed bulges matched with the grooves, or the lower end of the lower raised head (7) is provided with radially distributed bulges, and the upper end of the lower connector (3) is provided with radially distributed grooves matched with the bulges.

10. The simple and stable hinge according to claim 4, characterized in that: the outer periphery and the inner periphery of the rotating bearing (8) are respectively provided with a groove which is axially distributed, the side walls of the lower convex head (71) and the middle cylinder body (2) are correspondingly provided with matched bulges, or the outer periphery and the inner periphery of the rotating bearing (8) are respectively provided with bulges which are axially distributed, and the side walls of the lower convex head (71) and the middle cylinder body (2) are correspondingly provided with matched grooves.

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