CN215718006U

CN215718006U - Automatic reset hinge

Info

Publication number: CN215718006U
Application number: CN202121366410.XU
Authority: CN
Inventors: 赵金胜
Original assignee: Baoding Shengtong Building Materials Technology Development Co ltd
Current assignee: Baoding Shengtong Building Materials Technology Development Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-02-01
Anticipated expiration: 2031-06-18

Abstract

The utility model provides an automatic homing hinge which comprises an upper hinge, a lower hinge and a shaft core, wherein the upper hinge is connected with the lower hinge through a hinge shaft; the upper hinge comprises a first sleeve with an opening at the lower end and a first fixing plate connected with the peripheral surface of the first sleeve, and the first fixing plate is used for being fixedly connected with the door panel; the lower hinge comprises a second sleeve with an opening at the upper end and a second fixed plate connected with the outer peripheral surface of the second sleeve, and the second fixed plate is fixedly connected with the door frame; the second sleeve is coaxially arranged with the first sleeve and is rotationally connected with the first sleeve; a second abutting surface which is obliquely arranged from bottom to top is arranged in the second sleeve; the shaft core is arranged in the first sleeve, rotates along with the first sleeve and can slide up and down in the first sleeve, the lower end face of the shaft core is a first abutting face, and the first abutting face is obliquely arranged from bottom to top; the upper end surface of the shaft core is connected with a first elastic piece which elastically stretches along the vertical direction. The automatic homing hinge provided by the utility model has the advantages of long service life, simple structure and convenience in assembly.

Description

Automatic reset hinge

Technical Field

The utility model belongs to the technical field of hinges, and particularly relates to an automatic homing hinge.

Background

The hinge is a mechanical device used for connecting two solids and allowing relative rotation between the two solids, generally consists of a pair of metal hinges connected by a pin, and is mainly used for swinging components such as door panels, cabinets and the like to realize opening and closing actions. In order to facilitate the use of users, more and more hinges are available on the market and have the function of automatic closing. However, the automatic closing action of the existing hinge is realized through the torsion spring, the service life of the torsion spring is short, prestress needs to be applied during assembly, the assembly is difficult, and the service life and the production efficiency of the hinge are directly influenced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an automatic homing hinge, and aims to solve the problems of short service life and difficulty in assembly of the conventional automatic homing hinge.

In order to achieve the purpose, the utility model adopts the technical scheme that: the automatic homing hinge comprises an upper hinge, a lower hinge and a shaft core; the upper hinge comprises a first sleeve with an opening at the lower end and a first fixing plate connected with the outer peripheral surface of the first sleeve, and the first fixing plate is fixedly connected with the door panel; the lower hinge comprises a second sleeve with an opening at the upper end and a second fixed plate connected with the outer peripheral surface of the second sleeve, and the second fixed plate is fixedly connected with the door frame; the second sleeve is coaxial and rotationally connected with the first sleeve; a second abutting surface is arranged in the second sleeve, and the second abutting surface is obliquely arranged from bottom to top; the shaft core is arranged in the first sleeve, rotates along with the first sleeve and can slide up and down in the first sleeve; the lower end surface of the shaft core is a first abutting surface which is obliquely arranged from bottom to top; the upper end surface of the shaft core is connected with a first elastic piece which elastically stretches along the vertical direction; the first fixing plate is in a closed state and an open state; when the switch is in a closed state, the first abutting surface is attached to the second abutting surface; in the open state, the lower edge of the first contact surface contacts the second contact surface.

In a possible implementation manner, a sliding groove extending along the axial direction is arranged on the outer wall of the first sleeve; the outer wall of the shaft core is provided with a sliding block which slides up and down in the sliding groove.

In a possible implementation manner, a first upright column extending downwards is arranged at the top end of the inner wall of the first sleeve; the upper end of the shaft core is provided with a sleeve extending upwards, and the first upright post is used for being inserted into the sleeve; the first elastic piece is sleeved outside the sleeve.

In a possible implementation mode, the lower end of the shaft core is provided with a second upright post extending downwards; the second upright post is inserted into the second sleeve and slides up and down along the second sleeve.

In a possible implementation manner, a second elastic piece is arranged in the second sleeve, one end of the second elastic piece is abutted against the bottom end of the inner wall of the second sleeve, and the other end of the second elastic piece is abutted against the end face of the second upright post.

In some embodiments, the second resilient member provides a spring force that is less than a spring force provided by the first resilient member in the closed state.

In a possible implementation manner, the opening of the first sleeve and the opening of the second sleeve are respectively in threaded connection with a first shaft seat and a second shaft seat which are coaxially arranged, and the first shaft seat is used for blocking the sliding block from popping out downwards along the sliding groove.

In some embodiments, the end surfaces of the first shaft seat and the second shaft seat opposite to each other are provided with an annular slide rail, and a plurality of balls are arranged in the slide rail and used for reducing the friction force of the first shaft seat and the second shaft seat rotating relatively.

Compared with the prior art, the automatic homing hinge provided by the embodiment has the advantages that the upper hinge is fixedly connected with the door panel through the first fixing plate, the lower hinge is fixedly connected with the door frame through the second fixing plate, and the first abutting surface of the shaft core is attached to the second abutting surface of the second sleeve in the closed state; in the transition process from the closed state to the open state, the first sleeve drives the shaft core to rotate, the first abutting surface rotates along with the shaft core and moves upwards along the second abutting surface, the first abutting surface has the tendency of sliding downwards along the second abutting surface and rotating, and meanwhile, the first elastic piece is compressed; after being in the open mode, first elastic component kick-backs and extrudees the axle center downwards, and first butt face is along the axle core gyration and along second butt face downstream, and the axle core drives first sleeve and first fixed plate gyration simultaneously, finally reaches the state of first butt face and the laminating of second butt face, realizes the automatic playback of hinge.

The torque force required in the closing process of the upper hinge is provided by the elastic force of the first elastic piece and the supporting force of the second abutting surface to the first abutting surface together, the torque force is shared, the period of metal fatigue of each part can be prolonged, and therefore the service life of the hinge is prolonged; adopt the connected mode of butt between first elastic component and first sleeve and the axle core, compare in traditional hinge torsion spring with fold paper and the connected mode of pin joint, the assembly mode is more simple and convenient, does benefit to production.

Drawings

Fig. 1 is a schematic structural view of an automatic return hinge provided in an embodiment of the present invention;

fig. 2 is a first schematic sectional view of the automatic return hinge according to the embodiment of the present invention (in the first view, the first fixing plate is in an open state);

FIG. 3 is a schematic view of a partially cut-away structure of an automatic-return hinge according to an embodiment of the utility model;

fig. 4 is a schematic cross-sectional view of the automatic return hinge according to the embodiment of the present invention (in the drawing, the first fixing plate is in a closed state);

FIG. 5 is a schematic view, partially in section, of an upper hinge used in an embodiment of the present invention;

FIG. 6 is a schematic view, partially in section, of a lower hinge used in an embodiment of the present invention;

FIG. 7 is a schematic structural view of a shaft core employed in an embodiment of the present invention;

description of reference numerals:

1. an upper hinge; 11. a first sleeve; 12. a first fixing plate; 13. a chute; 14. a first upright post; 2. a lower fold; 21. a second sleeve; 22. a second fixing plate; 23. a second abutting surface; 3. a shaft core; 31. a sleeve; 32. a slider; 33. a first abutting surface; 34. a second upright post; 4. a first elastic member; 5. a second elastic member; 6. a first shaft seat; 7. a second shaft base; 8. a slide rail; 9. and a ball.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 to 4, an automatic return hinge according to the present invention will be described. The automatic homing hinge comprises an upper hinge 1, a lower hinge 2 and a shaft core 3; the upper hinge 1 comprises a first sleeve 11 with an opening at the lower end and a first fixing plate 12 connected with the outer peripheral surface of the first sleeve 11, and the first fixing plate 12 is used for being fixedly connected with a door panel; the lower hinge 2 comprises a second sleeve 21 with an opening at the upper end and a second fixed plate 22 connected with the outer circumferential surface of the second sleeve 21, and the second fixed plate 22 is used for being fixedly connected with the door frame; the second sleeve 21 is coaxial and rotationally connected with the first sleeve 11; a second abutting surface 23 is arranged in the second sleeve 21, and the second abutting surface 23 is obliquely arranged from bottom to top; the shaft core 3 is arranged in the first sleeve 11, rotates along with the first sleeve 11 and can slide up and down in the first sleeve 11; the lower end surface of the shaft core 3 is a first abutting surface 33, and the first abutting surface 33 is obliquely arranged from bottom to top; the upper end surface of the shaft core 3 is connected with a first elastic piece 4 which elastically stretches along the vertical direction; wherein the first fixing plate 12 has a closed state and an open state; in the closed state, the first abutment surface 33 abuts against the second abutment surface 23; in the open state, the lower edge of the first contact surface 33 contacts the second contact surface 23.

When the door panel is closed, as shown in fig. 4, the first abutting surface 33 on the shaft core 3 and the second abutting surface 23 on the second sleeve 21 are mutually attached, and the first elastic member 4 is in a compressed state; it should be noted that, depending on the specific installation position of the door panel, the upper hinge 1 and the lower hinge 2 may be located on the same side or different sides of the sleeve (in this embodiment, the upper hinge 1 and the lower hinge 2 are located on the same side of the sleeve), and it is sufficient to ensure that the first abutting surface 33 abuts against the second abutting surface 23.

In the transition process from the closed state to the open state, as shown in fig. 3, the first fixing plate 12 fixedly connected to the door panel drives the first sleeve 11 to rotate, the shaft core 3 rotates along with the first sleeve 11, because the second abutting surface 23 is inclined upward and fixed in position, the first abutting surface 33 moves upward along the second abutting surface 23 while rotating along with the shaft core 3, at this time, the first abutting surface 33 has a tendency of sliding downward and revolving along the second abutting surface 23, the component force in the horizontal direction of the supporting force of the second abutting surface 23 on the edge of the first abutting surface 33 provides the torsion force of revolving the shaft core 3, and at the same time, the shaft core 3 further compresses the first elastic member 4 after moving upward, the downward elastic force of the first elastic member 4 on the shaft core 3 increases the magnitude of the torsion force, as the opening angle of the door panel increases, as shown in fig. 2, the shaft core 3 continues to move upward, the elastic force of the first elastic member 4 on the shaft core 3 continuously increases, the tendency of the shaft core 3 to move down and rotate back increases.

After the hinge is in an opening state, the door plate is loosened, the first elastic piece 4 releases stored elastic potential energy, the first elastic potential energy rebounds and downwards extrudes the shaft core 3, the first abutting surface 33 rotates along with the shaft core 3 and downwards moves along the second abutting surface 23, meanwhile, the shaft core 3 drives the first sleeve 11 and the first fixing plate 12 to rotate, finally, the state that the first abutting surface 33 is attached to the second abutting surface 23 is achieved, and the hinge is automatically returned.

It should be noted that the second abutting surface 23 may be a one-way inclined surface as shown in fig. 2, or may be an inclined surface that is arranged in a spiral direction, so as to increase a rotation angle of the first sleeve 11, and when the second abutting surface 23 is screwed for one turn in the second sleeve 21, the first sleeve 11 has a function of automatically turning within 360 degrees (in the embodiment shown in fig. 2, the first sleeve 11 has a function of automatically turning within 180 degrees), and meanwhile, the shape of the second abutting surface 23 should be adjusted correspondingly according to the shape of the first abutting surface 33.

Compared with the prior art, the automatic homing hinge provided by the embodiment has the advantages that the upper hinge 1 is fixedly connected with the door panel through the first fixing plate 12, the lower hinge 2 is fixedly connected with the door frame through the second fixing plate 22, and the first abutting surface 33 of the shaft core 3 is abutted with the second abutting surface 23 of the second sleeve 21 in the closed state; in the transition process from the closed state to the open state, the first sleeve 11 drives the shaft core 3 to rotate, the first abutting surface 33 rotates along with the shaft core 3 and moves upwards along the second abutting surface 23, the first abutting surface 33 has a tendency of sliding downwards and rotating around along the second abutting surface 23, and meanwhile, the first elastic element 4 is compressed; after the hinge is in an opening state, the first elastic piece 4 rebounds and downwards extrudes the shaft core 3, the first abutting surface 33 rotates along with the shaft core 3 and downwards moves along the second abutting surface 23, meanwhile, the shaft core 3 drives the first sleeve 11 and the first fixing plate 21 to rotate, and finally, the state that the first abutting surface 33 is attached to the second abutting surface 23 is achieved, and the hinge is automatically returned.

The torque force required in the closing process of the upper hinge 1 is provided by the elastic force of the first elastic piece 4 and the supporting force of the second abutting surface 23 on the first abutting surface 33, the torque force is shared, the period of metal fatigue of each part can be prolonged, and the service life of the hinge is prolonged; adopt the connected mode of butt between first elastic component 4 and first sleeve 11 and the axle core 3, compare in traditional hinge torsion spring with fold paper and the connected mode of pin joint, the assembly mode is more simple and convenient, does benefit to production.

In some possible embodiments, as shown in fig. 1, 5 and 7, the outer wall of the first sleeve 11 is provided with a sliding groove 13 extending along the axial direction; the outer wall of the shaft core 3 is provided with a slide block 32, and the slide block 32 slides up and down in the slide groove 13.

In the door plate opening process, the sliding groove 13 plays a guiding role on the sliding block 32, so that the shaft core 3 does not rotate relative to the first sleeve 11 while moving up and down; in the process of automatically closing the door panel, the shaft core 3 drives the first sleeve 11 to rotate through the sliding block 32 so as to realize the action of automatically returning the upper hinge 1; in this embodiment, the number of the sliding grooves 13 and the number of the sliding blocks 32 are two, the specific number is not limited, and when the shaft core 3 moves up and down in the first sleeve 11 and the door panel is closed, the first abutting surface 33 and the second abutting surface 23 are attached to each other.

In some possible embodiments, as shown in fig. 4, 5 and 7, the top end of the inner wall of the first sleeve 11 is provided with a first pillar 14 extending downwards; the upper end of the shaft core 3 is provided with a sleeve 31 extending upwards, and the first upright post 14 is inserted into the sleeve 31; the first elastic element 4 is sleeved outside the sleeve 31.

First stand 14 and sleeve pipe 31 mainly play reinforced (rfd) effect to first sleeve 11 and axle core 3, guarantee to rotate the in-process, and first sleeve 11 is in coaxial rotation's state with axle core 3 all the time, avoids because the dynamics of opening the door or closing the door is too big, leads to first sleeve 11 and axle core 3 to break away from each other, makes the stability greatly increased of hinge. Specifically, as shown in fig. 1, the first elastic element 4 is a pressure spring and is sleeved outside the sleeve 31, the first elastic element 4 adopts the pressure spring to effectively reduce the production cost, and compared with a torsion spring in a traditional hinge, the service life of the pressure spring is obviously longer, the service life of the torsion spring can even reach several times of that of the torsion spring under the same material, and the service life of the hinge can be further prolonged by adopting the pressure spring for the first elastic element 4. The pressure spring is sleeved outside the sleeve 31, so that the pressure spring can be effectively prevented from deviating to the periphery in the extruding process, the pressure spring is guaranteed to be compressed or relaxed along the vertical direction all the time, the elastic force change of the pressure spring is more linear, and the rotation of the first sleeve 11 is more stable.

In some possible embodiments, as shown in fig. 4, 6 and 7, the lower end of the shaft core 3 is provided with a second upright 34 extending downward; the second post 34 is adapted to be inserted into the second sleeve 21 and slide up and down along the second sleeve 21. Insert second stand 34 in the second sleeve 21, can guarantee at rotatory in-process, axle core 3 and second sleeve 21 are in coaxial rotatory state all the time to, the position relation of axle core 3 and second sleeve 21 is more firm, avoids because open the door or the dynamics of closing the door too big, leads to second sleeve 21 and axle core 3 to break away from each other, makes the stability greatly increased of hinge.

In some possible embodiments, as shown in fig. 4, a second elastic member 5 is disposed in the second sleeve 21, and one end of the second elastic member 5 abuts against the bottom end of the inner wall of the second sleeve 21, and the other end abuts against the end surface of the second pillar 34. The second elastic component 5 mainly plays a buffering role, provides upward elasticity for the shaft core 3, and avoids the door plate to close the in-process, and the door plate rotating speed is faster and faster, and the door plate and the doorframe are collided vigorously to generate noise.

Specifically, the second elastic member 5 is a pressure spring and when the door panel is closed, the elastic force provided by the second elastic member 5 is smaller than the elastic force provided by the first elastic member 4. When the door panel is closed, the first elastic piece 4 and the second elastic piece 5 are both in a compressed state, and the elastic force provided by the second elastic piece 5 is smaller than the elastic force provided by the first elastic piece 4, so that the shaft core 3 is ensured not to be jacked upwards by the second elastic piece 5, and the first abutting surface 33 and the second abutting surface 23 are in a fit state; when the door panel is opened, the shaft core 3 moves upwards, the first elastic part 4 is further compressed, the downward elastic force is increased, the second elastic part 5 begins to relax, and the upward elastic force begins to decrease; after the door plate is loosened, the upper hinge 1 starts to automatically return, the shaft core 3 starts to move downwards, the compression amount of the first elastic part 4 is reduced, the downward elastic force is reduced, the compression amount of the second elastic part 5 is increased, the upward elastic force is also increased, and the upward elastic force generated by the second elastic part 5 is continuously increased along with the continuous downward movement of the shaft core 3, so that the situation that the shaft core 3 moves too fast downwards and the door plate and the door frame generate violent impact is effectively avoided; because the elastic force generated by the second elastic member 5 in the closed state is still smaller than the elastic force generated by the first elastic member 4, the second elastic member 5 only slows down the downward movement process of the shaft core 3, but does not prevent the downward movement of the shaft core 3, namely, plays a role in buffering, and the door closing action is smoother.

It should be noted that, the second elastic component 5 can also adopt a hydraulic buffer component, the buffering effect is better, the embodiment adopts a pressure spring to reduce the production cost, and the problem of easy oil leakage of the hydraulic buffer component is avoided by adopting the pressure spring.

In some possible embodiments, as shown in fig. 1 and 2, the first shaft seat 6 and the second shaft seat 7 are respectively screwed to the openings of the first sleeve 11 and the second sleeve 21, and the first shaft seat 6 is used for blocking the sliding block 32 from popping out downwards along the sliding chute 13. The first shaft seat 6 and the second shaft seat 7 can effectively protect the end surfaces of the first sleeve 11 and the second sleeve 21; furthermore, the first shaft seat 6 is screwed with the first sleeve 11, and also has a limiting function on the sliding block 32 on the shaft core 3, because when the upper hinge 1 is mounted on the door panel, the first elastic member 4 is in a compressed state, the shaft core 3 has a tendency to pop out of the first sleeve 11, and as shown in fig. 3 and 7, the sliding block 32 protrudes out of the outer wall of the shaft core 3, so that when the sliding block 32 slides to the first shaft seat 6, the sliding block is blocked by the first shaft seat 6, and the shaft core 3 is prevented from popping out of the first sleeve 11 when the upper hinge 1 is mounted.

It should be noted that, during the use of the hinge, the length of the sliding groove 13 should ensure that the first shaft seat 6 does not obstruct the slider 32 even in the closed state of the door panel, and ensure that the first abutting surface 33 and the second abutting surface 23 can be smoothly attached.

In some embodiments, as shown in fig. 2 and 4, the end surfaces of the first shaft seat 6 opposite to the second shaft seat 7 are provided with an annular slide rail 8, and a plurality of balls 9 are provided in the slide rail 8 for reducing the friction force of the first shaft seat 6 and the second shaft seat 7 rotating relatively. Set up a plurality of balls 9 in the slide rail 8 of primary shaft seat 6 and secondary shaft seat 7, can become rolling friction with the sliding friction of primary shaft seat 6 with secondary shaft seat 7, reduce frictional force greatly, make the action of opening and shutting more smooth and easy, reduce wearing and tearing simultaneously, effectively prolonged the life of hinge.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An automatic homing hinge, comprising:

the upper hinge comprises a first sleeve with an opening at the lower end and a first fixing plate connected with the outer peripheral surface of the first sleeve, and the first fixing plate is fixedly connected with the door panel;

the lower hinge comprises a second sleeve with an opening at the upper end and a second fixed plate connected with the outer peripheral surface of the second sleeve, and the second fixed plate is fixedly connected with the door frame; the second sleeve is coaxial and rotationally connected with the first sleeve; a second abutting surface is arranged in the second sleeve, and the second abutting surface is obliquely arranged from bottom to top;

the shaft core is arranged in the first sleeve, rotates along with the first sleeve and can slide up and down in the first sleeve; the lower end surface of the shaft core is a first abutting surface, and the first abutting surface is obliquely arranged from bottom to top; the upper end surface of the shaft core is connected with a first elastic piece which elastically stretches along the vertical direction;

wherein the first fixing plate has a closed state and an open state; when the closing state is realized, the first abutting surface is attached to the second abutting surface; in the open state, a lower edge of the first abutment surface abuts against the second abutment surface.

2. The automatic homing hinge of claim 1, wherein an axially extending slide slot is provided on an outer wall of said first sleeve; the outer wall of the shaft core is provided with a sliding block, and the sliding block slides up and down in the sliding groove.

3. The self-homing hinge of claim 1, wherein a first downwardly extending post is disposed at a top end of an inner wall of the first sleeve; the upper end of the shaft core is provided with a sleeve extending upwards, and the first upright post is used for being inserted into the sleeve; the first elastic piece is sleeved outside the sleeve.

4. The automatic homing hinge of claim 1, wherein a second upright extending downward is provided at a lower end of said spindle; the second upright post is inserted into the second sleeve and slides up and down along the second sleeve.

5. The automatic homing hinge of claim 4, wherein a second elastic member is disposed in said second sleeve, one end of said second elastic member abutting against a bottom end of an inner wall of said second sleeve and the other end abutting against an end surface of said second post.

6. The self-righting hinge as claimed in claim 5, wherein in the closed position, the second resilient member provides a spring force less than a spring force provided by the first resilient member.

7. The automatic homing hinge of claim 2, wherein the openings of the first sleeve and the second sleeve are respectively in threaded connection with a first shaft seat and a second shaft seat which are coaxially arranged, and the first shaft seat is used for preventing the sliding block from popping out downwards along the sliding groove.

8. The automatic homing hinge of claim 7, wherein each of said first and second pivot seats has an annular slide track on its opposite end surface, said slide track having a plurality of balls therein for reducing friction during relative rotation of said first and second pivot seats.