CN216476860U - Novel two-stage force buffering hinge - Google Patents

Abstract

The utility model discloses a novel two-stage force buffering hinge, which comprises a hinge body mounted on the inner wall surface of a frame body and a hinge cup mounted on a cabinet door; the hinge body comprises a connecting arm, an outer rocker arm and an inner rocker The hinge body also includes a protective cover and a double torsion spring, the protective cover is arranged on the inner rocker arm through the rotation of the rotating shaft; the double torsion spring is sleeved on the outer pin shaft, and the middle torsion bar of the double torsion spring Abutting on the protective cover, the side torsion bar of the double torsion spring abuts on the inner side wall of the outer rocker arm, when the double torsion spring is compressed by force, the middle torsion bar of the double torsion spring will drive the protective cover to roll, To realize the relative sliding between the middle torsion bar of the double torsion spring and the inner rocker arm, avoid the direct contact and sliding of the middle torsion bar of the double torsion spring and the inner rocker arm, so that the double torsion spring moves through the rolling friction of the protective sleeve, effectively reducing the wear of the double torsion spring , improve the service life.

Description

A new type of two-stage force buffer hinge

technical field

The utility model relates to the field of hinges, in particular to a novel two-stage force buffer hinge.

Background technique

A hinge is a common component used to connect two objects so that they can be relatively rotatably combined. component) is constituted by a hinge body attached to the cup-shaped member, the hinge body is attached to the inner wall surface of a housing for storing objects such as furniture, and the link member is inserted into the cup-shaped member in the closed state of the door.

The traditional hinge has no buffering force when opening or closing, which is easy to damage the connection between the cabinet door and the cabinet. Later, a method of adding a hydraulic cylinder to the hinge was designed, so that the hinge has a preliminary buffering force, which is called a force connection. Structure; the shortcoming of a force connection structure is that when the cabinet door is opened to the end, it will swing back many times, and it is easy to damage the connection between the cabinet door and the cabinet after long-term use.

Therefore, the applicant applied for a two-stage force buffering hinge of Patent No. 2020229960876, which includes a hinge body mounted on the inner wall of the frame and a hinge cup mounted on the cabinet door; the hinge body includes a connecting arm, an outer rocker arm, an inner rocker arm and a torsion spring; the torsion spring is sleeved on the outer pin shaft, the first torsion bar of the torsion spring abuts on the inner pin shaft, and the second torsion bar of the torsion spring abuts on the U-shaped pin shaft The lower link of the outer rocker arm is provided with a boss at the end of the outer rocker arm close to the hinge cup. The matching notch makes the cabinet door open to 85° and then fully opens this area, so that the hinge cup does not need to overcome the torsion force of the torsion spring to open the hinge cup, reducing the strong impact of the door in the opening direction, and preventing the cabinet door from opening to the end. A situation of swinging back and forth many times is generated, so as to avoid collision at the connection between the cabinet door and the cabinet.

However, during the movement of the two-stage force buffer hinge, the torsion spring will slide and rub against the inner pin shaft, reducing the service life of the torsion spring.

Utility model content

In view of the deficiencies in the prior art, the purpose of the present utility model is to provide a novel two-stage force buffer hinge.

To achieve the above object, the utility model provides the following technical solutions:

A novel two-stage force buffer hinge, comprising a hinge body mounted on the inner wall surface of a frame body and a hinge cup mounted on a cabinet door;

The hinge body includes a connecting arm, an outer rocker arm and an inner rocker arm; the inner rocker arm is rotatably arranged on the connecting arm through an inner pin shaft, one end of the inner rocker arm is provided with a buffer damper, and the other end is provided with a U-shaped pin The upper link of the shaft is hinged with the hinge cup;

One end of the outer rocker arm is hinged with the connecting arm through the outer pin shaft, and the other end of the outer rocker arm is hinged with the hinge cup through the lower link of the U-shaped pin shaft;

The hinge body further includes a protective cover and a double torsion spring, and the protective cover is rotatably arranged on the inner rocker arm through a rotating shaft;

The double torsion spring is sleeved on the outer pin shaft, the middle torsion bar of the double torsion spring abuts on the protective sleeve, and the side torsion bar of the double torsion spring abuts on the inner side wall of the outer rocker arm.

The utility model further provides that: one end face of the outward rocker arm of the connecting arm is provided with a protective protrusion, and the protective protrusion is upwardly tilted toward one end of the outer pin shaft.

The utility model further provides: the outer rocker arm comprises a left side plate and a right side plate, a number of stacked sheets are arranged between the left side plate and the right side plate, the protective sleeve is sleeved on the rotating shaft, the One end of the rotating shaft is fixed on the left side plate, and the other end is fixed on the right side plate.

The utility model further provides: the buffer damper includes a damping shell, a piston rod and a piston, the damping shell is provided with a top hole and a pressure cavity for filling damping oil, and one end of the piston rod passes through the damping shell. The top hole is placed in the pressure chamber to connect with the piston, and the other end is placed outside the damping shell to connect with the inner rocker arm;

A sealing upper cover is arranged at the top hole, and the sealing upper cover is arranged on the piston rod to close the pressure chamber;

The piston divides the pressure chamber into an upper pressure chamber and a lower pressure chamber, and a pre-compression spring is arranged in the lower pressure chamber, one end of the pre-compression spring abuts on the piston, and the other end abuts on the inner bottom of the damping shell on the wall.

The utility model further provides that a lower mounting seat is arranged on the inner bottom wall of the damping shell, and the lower mounting seat is provided with a mounting groove for mounting the pre-compression spring.

The utility model further provides: the lower mounting seat is provided with a guide groove which is matched with the piston, and the mounting groove is arranged on the bottom wall of the guide groove.

Beneficial effects of the present utility model: during the movement of the two-stage force buffer hinge of the present utility model, the middle torsion bar of the double torsion spring always abuts against the protective sleeve, when the double torsion spring is compressed by force, the double torsion spring is compressed. The middle torsion bar will drive the protective cover to roll to realize the relative sliding between the middle torsion bar of the double torsion spring and the inner rocker arm, avoiding the direct contact and sliding of the middle torsion bar of the double torsion spring and the inner rocker arm, so that the double torsion spring rolls through the protective cover Friction movement, effectively reducing the wear of the double torsion spring and improving the service life.

Description of drawings

Fig. 1 is a structural schematic diagram one of a novel two-stage force buffer hinge of the present invention;

Fig. 2 is the second structural schematic diagram of a novel two-stage force buffer hinge of the present invention;

Figure 3 is a schematic diagram of the installation structure of the double torsion spring, the inner rocker arm and the outer rocker arm

Figure 4 is a schematic diagram of the installation structure of the inner rocker arm and the protective sleeve;

Fig. 5 is the structural representation of double torsion spring;

6 is a schematic structural diagram of a buffer damper;

Figure 7 is a schematic structural diagram of the buffer damper after removing the damping shell;

Figure 8 is a schematic structural diagram of a damping shell;

Fig. 9 is the structural representation of the lower mounting seat;

Explanation of reference numerals: 1. hinge main body; 11. connecting arm; 111, protective protrusion; 12, outer rocker arm; 13, inner rocker arm; 131, left side plate; 132, right side plate; 133, laminated sheet ;14, inner pin; 15, U-shaped pin; 16, outer pin; 17, protective sleeve 18, double torsion spring; 181, middle torsion bar; 182, side torsion bar; 19, rotating shaft; 2, hinge cup; 3 , buffer damper; 31, damping shell; 311, top hole; 312, pressure chamber; 32, piston rod; 33, piston; 34, seal upper cover; 35, pre-compression spring; 36, lower mounting seat; 361, installation groove; 362, guide groove.

Detailed ways

Referring to Figures 1 to 9, a new two-stage force buffer hinge of the present invention will be further described in detail.

As can be seen from Figures 1 and 2, a novel two-stage force buffer hinge includes a hinge body 1 mounted on the inner wall of the frame and a hinge cup 2 mounted on the cabinet door; the hinge body 1 includes a connecting arm 11 , the outer rocker arm 12 and the inner rocker arm 13; the inner rocker arm 13 is rotatably arranged on the connecting arm 11 through the inner pin shaft 14, one end of the inner rocker arm 13 is provided with a buffer damper 3, and the other end is provided with a U-shaped pin The upper link of the shaft 15 is hinged with the hinge cup 2; The rod is hinged with the hinge cup 2;

As can be seen from FIG. 3 and FIG. 4 , the hinge body 1 further includes a protective sleeve 17 and a double torsion spring 18 , the protective sleeve 17 is rotatably arranged on the inner rocker arm 13 through the rotating shaft 19 ; the double torsion spring 18 is sleeved on the inner rocker arm 13 . On the outer pin shaft 16, the middle torsion bar 181 of the double torsion spring 18 abuts on the protective sleeve 17, and the side torsion bar 182 of the double torsion spring 18 abuts on the inner side wall of the outer rocker arm 12, so the two-stage force During the movement of the buffer hinge, the middle torsion bar 181 of the double torsion spring 18 always abuts against the protective cover 17. When the double torsion spring 18 is compressed by force, the middle torsion bar 181 of the double torsion spring 18 will drive the protection The sleeve 17 rolls to realize the relative sliding between the middle torsion bar 181 of the double torsion spring 18 and the inner rocker arm 13, so as to prevent the middle torsion bar 181 of the double torsion spring 18 from directly contacting and sliding with the inner rocker arm 13, so that the double torsion spring 18 passes through the protective sleeve. The rolling friction movement of 17 effectively reduces the wear of the double torsion spring 18 and improves the service life.

The connecting arm 11 is provided with a protective protrusion 111 on one end surface of the outward rocker arm 12 . A larger space for installing the double torsion spring 18 is formed, so that the outer pin shaft 16 can accommodate the double torsion spring 18 with a larger diameter, thereby improving the service life of the double torsion spring 18 .

The inner rocker arm 13 includes a left side plate 131 and a right side plate 132, and between the left side plate 131 and the right side plate 132 are provided a number of laminated sheets 133 superimposed on each other, which can effectively improve the strength of the outer rocker arm 12, thereby The outer rocker arm 12 is effectively prevented from being deformed during use. The protective sleeve 17 is sleeved on the rotating shaft 19. One end of the rotating shaft 19 is fixed on the left side plate 131 and the other end is fixed on the right side plate 132, which is convenient for installation and protection. Set of 17.

As can be seen from FIG. 6 to FIG. 9 , the buffer damper 3 includes a damping shell 31 , a piston rod 32 and a piston 33 . The damping shell 31 is provided with a top hole 311 and a pressure chamber 312 for filling damping oil. The piston One end of the rod 32 passes through the top hole 311 of the damping shell 31 and is placed in the pressure chamber 312 to connect with the piston 33, and the other end is placed outside the damping shell 31 to connect with the inner rocker arm 13; the top hole 311 is provided with a The sealing upper cover 34 is set on the piston rod 32 to seal the pressure chamber 312; wherein the piston 33 divides the pressure chamber 312 into an upper pressure chamber 312 and a lower pressure chamber 312, and a pre-pressure is set in the lower pressure chamber 312 A spring 35, one end of the pre-compression spring 35 abuts on the piston 33, and the other end abuts on the inner bottom wall of the damping shell 31.

The lower mounting seat 36 is provided on the inner bottom wall of the damping shell 31, and the lower mounting seat 36 is provided with a mounting groove 361 for installing the pre-compression spring 35, which is convenient for installing the pre-compression spring 35 and also effectively avoids the pre-compression spring. 35 tilted during compression. The lower mounting seat 36 is provided with a guide groove 362 adapted to the piston 33 , the mounting groove 361 is arranged on the bottom wall of the guide groove 362 , and the guide groove 362 is close to the piston 33 to the damping shell 31 . When the bottom moves, it plays a guiding role.

Therefore, the present invention is provided with a pre-compression spring 35 in the lower pressure chamber 312. One end of the pre-compression spring 35 abuts on the piston 33, and the other end abuts on the inner bottom wall of the damping shell 31. The piston 33 will When reaching the bottom of the damping shell 31, since the pre-compression spring 35 is compressed, the piston 33 cannot reach the bottom of the damping shell 31, and avoids the phenomenon that the piston 33 rushes out of the effective stroke and the damper fails, so the hinge opens and closes at a small angle When the piston 33 is pulled out, the problem of damping failure will not occur, and the reverse action of the pre-compression spring 35 makes the piston 33 have a certain resilience and reset ability, which increases the damping effect of the damper.

The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions that belong to the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims (6)

1. A novel two-stage force buffering hinge comprises a hinge main body arranged on the inner wall surface of a frame body and a hinge cup arranged on a cabinet door;

the hinge main body comprises a connecting arm, an outer rocker arm and an inner rocker arm; the inner rocker arm is rotatably arranged on the connecting arm through an inner pin shaft, one end part of the inner rocker arm is provided with a buffer damper, and the other end part of the inner rocker arm is hinged with the hinge cup through an upper connecting rod of a U-shaped pin shaft;

one end of the outer rocker arm is hinged with the connecting arm through an outer pin shaft, and the other end of the outer rocker arm is hinged with the hinge cup through a lower connecting rod of the U-shaped pin shaft;

the method is characterized in that: the hinge main body further comprises a protective sleeve and a double torsion spring, and the protective sleeve is rotatably arranged on the inner rocker arm through a rotating shaft;

the double-torsion spring is sleeved on the outer pin shaft, a middle torsion bar of the double-torsion spring is abutted against the protective sleeve, and a side torsion bar of the double-torsion spring is abutted against the inner side wall of the outer rocker arm.

2. The novel two-stage force-absorbing hinge as claimed in claim 1, wherein: one end face of the outward rocker arm of the connecting arm is provided with a protection protruding portion, and the protection protruding portion upwards tilts towards one end portion of the outward pin shaft.

3. The novel two-stage force buffering hinge as claimed in claim 1 or 2, wherein: the outer rocker arm comprises a left side plate and a right side plate, a plurality of stacked lamination sheets which are stacked mutually are arranged between the left side plate and the right side plate, the protective sleeve is sleeved on the rotating shaft, one end part of the rotating shaft is fixed on the left side plate, and the other end part of the rotating shaft is fixed on the right side plate.

4. The novel two-stage force-absorbing hinge as claimed in claim 1, wherein: the buffer damper comprises a damping shell, a piston rod and a piston, wherein the damping shell is provided with a top hole and a pressure cavity for filling damping oil, one end part of the piston rod penetrates through the top hole of the damping shell and is arranged in the pressure cavity to be connected with the piston, and the other end part of the piston rod is arranged outside the damping shell and is connected with the inner rocker arm;

a sealing upper cover is arranged at the top hole and is provided with a piston rod to seal the pressure cavity;

wherein the piston divides the pressure chamber into last pressure chamber and lower pressure chamber, is provided with pre-compaction spring in lower pressure chamber, pre-compaction spring's one end supports and leans on the piston, and another tip supports and leans on the interior diapire of damping shell.

5. The novel two-stage force damping hinge of claim 4, wherein: and a lower mounting seat is arranged on the inner bottom wall of the damping shell, and a mounting groove for mounting the pre-pressing spring is formed in the lower mounting seat.

6. The novel two-stage force damping hinge of claim 5, wherein: the lower mounting seat is provided with a guide groove matched with the piston, and the mounting groove is formed in the bottom wall of the guide groove.

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