A hinge for a door

Abstract

The utility model discloses a kind of axle door hinges, including shell, the one end of shell is rotatably provided with rotating shaft, first cam and second cam are rotatably provided on the rotating shaft;Automatic door closing assembly and buffer device are provided in the shell, the automatic door closing assembly includes slider and automatic door closing spring, the one end of automatic door closing spring is in abutment with slider, and the other end is in abutment with shell;The one end of slider is provided with movable hole matched with rotating shaft, and the other end passes through automatic door closing spring and is matched with buffer device;First cam and second cam are placed in movable hole, wherein the rotating shaft can push slider to slide back and compress automatic door closing spring by first cam, and it can drive slider to move forward by second cam, when rotating shaft rotates from door opening position to door closing position, the buffer device will prevent slider from sliding, reach the purpose of preventing rotating shaft from rotating, so that axle door hinge has buffering function.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, and more specifically, to a hinged door hinge. Background Technology

[0002] Hinges are common components used to connect two objects so that they can rotate relative to each other. As the name suggests, a hinge is a hinge with a pivot. It is often used in the installation of glass doors and windows. The upper and lower ends of the glass doors and windows are fixedly installed on the pivot of the corresponding hinge, so that the glass doors and windows can be opened and closed around the pivot.

[0003] Existing hinged doors often lack a buffer function, causing doors and windows to violently impact the door frame due to inertia when closing, resulting in damage. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a hinged door hinge.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A hinge includes a housing, one end of which is rotatably mounted on a pivot, and a first cam and a second cam are disposed on the pivot at a offset distance from each other.

[0007] The outer casing is provided with an automatic door closing assembly and a buffer device. The automatic door closing assembly includes a sliding member and an automatic door closing spring. One end of the automatic door closing spring abuts against the sliding member, and the other end abuts against the outer casing.

[0008] One end of the sliding member is provided with a movable hole that cooperates with the rotating shaft, and the other end passes through the automatic door closing spring and cooperates with the buffer device;

[0009] The first cam and the second cam are placed in the movable hole, wherein the rotating shaft can push the slider to slide backward and compress the automatic door closing spring through the first cam, and can drive the slider to move forward through the second cam.

[0010] The present invention further provides that the movable hole has a rear sidewall that cooperates with the first cam and a front sidewall that cooperates with the second cam, and the first cam and the second cam drive the sliding member to move within the housing during rotation.

[0011] The present invention further includes a feature where the front sidewall of the slider is provided with a protrusion that cooperates with the second cam.

[0012] The present invention further includes: a mating part that engages with the first cam is movably disposed on the rear side wall of the movable hole.

[0013] The present invention further comprises: the buffer device is a one-way damper, and the piston rod of the one-way damper is connected to the sliding member;

[0014] The automatic door closing spring drives the sliding member to move the piston rod forward, and the one-way damper prevents the sliding member from sliding forward.

[0015] The present invention is further provided in that: a buffer spring is sleeved on the piston rod, one end of the buffer spring abuts against the top cover of the one-way damper, and the other end abuts against the piston;

[0016] The piston rod drives the piston forward, and the piston compresses the buffer spring forward, which prevents the piston from moving forward.

[0017] The present invention is further provided that bearings are fitted at both the upper and lower ends of the rotating shaft.

[0018] The beneficial effects of this utility model are as follows: the pivot of the door hinge is provided with a first cam and a second cam that are staggered from each other. The first cam and the second cam are placed in the movable hole. The pivot can push the slider backward and compress the automatic door closing spring through the first cam, and can drive the slider forward through the second cam.

[0019] When the hinge rotates from the closed position to the open position, the first cam on the hinge drives the slider to slide backward and compress the automatic closing spring, storing force in the automatic closing spring. When the hinge rotates from the open position to the closed position, the second cam drives the slider to move forward. The slider will continuously slide forward under the drive of the automatic closing spring. The buffer device will prevent the slider from sliding forward, so that the rotation of the hinge and the sliding of the slider are synchronized, thereby achieving the purpose of slowing down the rotation speed of the hinge and giving the hinge a buffer function. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a hinge for a door according to the present invention;

[0021] Figure 2 This is a diagram showing the closed state of a door hinge according to this utility model;

[0022] Figure 3 This is a diagram showing the door hinge of the present invention at a 45-degree opening angle.

[0023] Figure 4 This is a diagram showing the open state of a hinged door according to the present invention.

[0024] Figure 5 This is a diagram showing the fit between the sliding component and the one-way damper of a hinge according to this utility model.

[0025] Figure 6 This is a diagram showing the fit between the pivot and the sliding component of a hinged door in the closed state according to this utility model.

[0026] Figure 7 This is a diagram showing the fit between the pivot and the sliding component of a hinged door in a 45-degree open position.

[0027] Figure 8 This is a diagram showing the fit between the pivot and the sliding component of a hinged door in the open state according to this utility model.

[0028] Figure 9 This is a schematic diagram of the structure of the pivot of a door hinge according to the present invention;

[0029] Figure 10 This is a schematic diagram of the sliding component of a hinge according to the present invention;

[0030] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Rotating shaft; 21. First cam; 22. Second cam; 3. Automatic door closing assembly; 31. Sliding component; 311. Movable hole; 3111. Mating component; 312. Protrusion; 32. Automatic door closing spring; 4. One-way damper; 41. Piston rod; 42. Buffer spring; 43. Top cover; 44. Piston; 5. Bearing. Detailed Implementation

[0031] See attached document Figures 1 to 10 This utility model provides a more detailed description of a hinged door mechanism.

[0032] A hinge includes a housing 1, with a rotating shaft 2 rotatably mounted on one end of the housing 1, and a first cam 21 and a second cam 22 disposed on the rotating shaft 2 at offset intervals.

[0033] The outer casing 1 is provided with an automatic door closing assembly 3 and a buffer device. The automatic door closing assembly 3 includes a sliding member 31 and an automatic door closing spring 32. One end of the automatic door closing spring 32 abuts against the sliding member 31, and the other end abuts against the outer casing 1.

[0034] One end of the sliding member 31 is provided with a movable hole 311 that cooperates with the rotating shaft 2, and the other end passes through the automatic door closing spring 32 and cooperates with the buffer device;

[0035] The first cam 21 and the second cam 22 are placed in the movable hole 311, wherein the rotating shaft 2 can push the sliding member 31 to slide backward and compress the automatic door closing spring 32 through the first cam 21, and can drive the sliding member 31 to move forward through the second cam 22;

[0036] When the pivot 2 rotates from the closed position to the open position, the first cam 21 on the pivot 2 drives the slider 31 to slide backward and compress the automatic closing spring 32, thus storing force in the automatic closing spring 32. When the pivot 2 rotates from the open position to the closed position, the second cam 22 drives the slider 31 to move forward. The slider 31 will continuously slide forward under the drive of the automatic closing spring 32. The buffer device will prevent the slider 31 from sliding forward, so that the rotation of the pivot 2 and the sliding of the slider 31 are synchronized, thereby achieving the purpose of slowing down the rotation speed of the pivot 2 and giving the door hinge a buffer function.

[0037] The movable hole 311 is provided with a rear sidewall that cooperates with the first cam 21 and a front sidewall that cooperates with the second cam 22. During the rotation of the first cam 21 and the second cam 22, the sliding member 31 is driven to move back and forth in the outer shell 1, so that the second cam 22 and the sliding member 31 cooperate better, so that the rotation of the rotating shaft 2 is restricted during the closing stage.

[0038] The front side wall of the slider 31 is provided with a protrusion 312 that cooperates with the second cam 22. When the rotating shaft 2 rotates from the open position to the closed position, the second cam 22 cooperates with the protrusion 312 to push the slider 31 forward.

[0039] The rear side wall of the movable hole 311 is movably provided with a mating part 3111 that cooperates with the first cam 21, so that the first cam 21 and the sliding part 31 cooperate more smoothly and prevent the rotating shaft 2 from jamming.

[0040] The buffer device is a one-way damper 4, and the piston rod 41 of the one-way damper 4 is connected to the sliding member 31. The automatic door closing spring 32 drives the sliding member 31 to move the piston rod 41 forward, and the one-way damper 4 prevents the sliding member 31 from sliding forward. The piston 44 of the one-way damper 4 is equipped with a one-way valve, so that when the piston 44 moves backward, the hydraulic oil in the lower oil chamber can smoothly enter the upper oil chamber, and the one-way damper 4 has no damping effect in this process. When the piston 44 moves forward, the hydraulic oil in the upper oil chamber has difficulty entering the upper oil chamber, and the one-way damper 4 has a damping effect in this process. It plays the role of preventing the piston 44 and the piston rod 41 from moving forward.

[0041] The piston rod 41 is fitted with a buffer spring 42, one end of which abuts against the top cover 43 of the one-way damper 4, and the other end abuts against the piston 44.

[0042] The piston rod 41 drives the piston 44 to move forward, and the piston 44 compresses the buffer spring 42 forward, which prevents the piston 44 from moving forward. The buffer spring 42 further increases the damping effect of the one-way damper 4, and at the same time makes the one-way damper 4 have a damping effect in the initial stage.

[0043] The upper and lower ends of the rotating shaft 2 are fitted with bearings 5, which makes the rotating shaft 2 rotate more smoothly.

[0044] The above description is merely a preferred embodiment of this utility model. The scope of protection of this invention is not limited to the above embodiments. All technical solutions falling within the scope of this invention's concept are within the scope of protection of this invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this invention should also be considered within the scope of protection of this invention.

Claims

1. A hinged door, comprising a housing, characterized in that: A rotating shaft is rotatably provided at one end of the outer casing, and a first cam and a second cam are disposed on the rotating shaft at a offset distance from each other. The outer casing is provided with an automatic door closing assembly and a buffer device. The automatic door closing assembly includes a sliding member and an automatic door closing spring. One end of the automatic door closing spring abuts against the sliding member, and the other end abuts against the outer casing. One end of the sliding member is provided with a movable hole that cooperates with the rotating shaft, and the other end passes through the automatic door closing spring and cooperates with the buffer device; The first cam and the second cam are placed in the movable hole, wherein the rotating shaft can push the slider to slide backward and compress the automatic door closing spring through the first cam, and can drive the slider to move forward through the second cam.

2. A hinge according to claim 1, characterized in that: The movable hole has a rear sidewall that cooperates with the first cam and a front sidewall that cooperates with the second cam. During the rotation of the first cam and the second cam, the sliding member moves within the housing.

3. A hinge according to claim 2, characterized in that: The front sidewall of the slider is provided with a protrusion that cooperates with the second cam.

4. A hinge according to claim 2 or 3, characterized in that: A mating part that engages with the first cam is movably disposed on the rear side wall of the movable hole.

5. A hinge according to claim 4, characterized in that: The buffer device is a one-way damper, and the piston rod of the one-way damper is connected to the sliding member; The automatic door closing spring drives the sliding member to move the piston rod forward, and the one-way damper prevents the sliding member from sliding forward.

6. A hinge according to claim 5, characterized in that: A buffer spring is fitted on the piston rod, with one end of the buffer spring abutting against the top cover of the one-way damper and the other end abutting against the piston; The piston rod drives the piston forward, and the piston compresses the buffer spring forward, which prevents the piston from moving forward.

7. A hinge according to claim 6, characterized in that: Bearings are fitted at both the upper and lower ends of the rotating shaft.

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