Single-rail damping power hinge for door body

Abstract

The utility model provides a door body monorail damping power hinge which comprises an installation plate and a rotating device, the rotating device comprises a guide block, a power source, a cam sliding block, a damper and a linkage shaft, the guide block is installed on a door body, the cam sliding block, the power source and the damper are respectively installed in the guide block, the cam sliding block is connected with a piston rod of the damper, and the linkage shaft is connected with the cam sliding block. A main shaft and a linkage shaft are installed on the installation plate, the guide block is provided with a single guide rail, the main shaft penetrates through the single guide rail and is connected with the cam sliding block, the linkage shaft is inserted into the single guide rail, the main shaft and the linkage shaft relatively slide on the single guide rail along with opening and closing of the door body, and meanwhile the power source is connected to the cam sliding block in a sliding mode. The elastic force of the power source acts on the cam sliding block or is released on the cam sliding block. The transmission relation is changed, the structure is simplified, rotation is more stable and smooth, the automatic slow door closing effect is achieved, operation is convenient, and the product use quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of hinges, in particular to a door body single-track damping power hinge. Background Art

[0002] Existing hinges are widely used in furniture and electrical appliances, especially refrigerators, where hinges are hinged between the cabinet and the door. In order to automatically close the door when the door is opened at a small angle, a power mechanism is installed on the hinge. The structure of the power mechanism can generally be selected in the following ways: 1. Magnetic strip method, a magnetic strip is installed on the door seal on the door body, so that when the user closes the door body to a certain angle, the door can be automatically closed by the suction of the magnetic strip. However, the magnetic strip will reduce the sealing and insulation performance of the door seal, and the use effect is low. 2. Plastic hook type, when the door body is manually closed from the maximum opening angle to a certain angle, the hook of the plastic part contacts the convex edge of the hinge mounting plate. When the door is closed forcefully, the plastic hook undergoes elastic deformation until it crosses the critical point of the convexity, and the door body is automatically closed under the action of the elastic restoring force of the plastic hook. However, the elasticity of the plastic hook is relatively small, and the door body needs to be closed to a very small angle to achieve automatic closing. The operation is cumbersome, and it is easy to wear and tear, and it is easy to be damaged by impact. The stability of use is poor and the service life is short. 3. Vertical spring driven type: when the door is closed to a certain angle, the ejector pin passes the critical point of the cam. Under the action of the elastic restoring force of the vertical spring, the ejector pin drives the reaction force on the cam, so that the cam rotates and drives the door to close automatically. However, the structure is complex and the cost is high. In addition, the vertical force provided by the vertical spring is offset during the rotation of the cam, resulting in energy loss and low efficiency. Utility Model Content

[0003] The purpose of the invention of the utility model is to overcome the deficiencies of the prior art and to provide a single-track damping power hinge for a door body, which has a simple structure, can both unload the force when opening the door and have the effect of automatically and slowly closing the door, has high rotation stability, is easy to operate, safe and reliable, and effectively guarantees the quality of product use.

[0004] The inventive object of the utility model is achieved as follows: a door body single-rail damping power hinge, comprising a mounting plate installed on a cabinet body and a rotating device installed on the door body, the mounting plate is equipped with a main shaft for rotationally connecting with the rotating device, wherein the rotating device comprises a guide block, a power source, a cam slider and a linkage shaft, the guide block is installed on the door body, the cam slider and the power source are respectively installed in the guide block, the mounting plate is equipped with a linkage shaft, the guide block is provided with a single guide rail, the main shaft passes through the single guide rail and is connected with the cam slider, the linkage shaft is inserted into the single guide rail, as the door body opens and closes, the main shaft and the linkage shaft slide relatively on the single guide rail, and at the same time, the power source is slidably connected to the cam slider, so that the elastic force of the power source acts on the cam slider or the elastic force of the power source is released on the cam slider.

[0005] According to the above optimization, the bottom surface of the cam slider is provided with a mounting groove for sliding connection with the main shaft, and the shape of the mounting groove is consistent with the forward and backward movement path of the cam slider.

[0006] According to the above optimization, one end of the single guide rail is connected to a front guide rail portion that matches the installation groove, and the shape of the single guide rail is set to be a special-shaped guide rail that matches the swing path of the door body when opening and closing.

[0007] According to the above optimization, the cam slider has an upper horizontal portion and a swinging cam, and the cam slider is provided with an upper plane that can release the elastic force of the power source in parallel outside the cam slider when the door body is opened, and an inclined surface that can make the elastic force of the power source act on the cam slider when the door body is closed, the inclined surface is arranged on the inner side of the swinging cam end, and the upper plane is arranged at the upper end of the swinging cam and is connected to the upper top of the inclined surface.

[0008] According to the above optimization, the guide block is equipped with a guide assembly for the power source to be directional and slidably connected to the cam slider as the door body opens and closes, the guide assembly includes a directional shaft, a guide shaft and a supporting shaft, the directional shaft is fixed to the positioning end of the guide block, the directional end of the power source is provided with a directional straight groove slidably connected to the directional shaft, the guide shaft is fixed to the swinging end of the power source, the guide block is provided with an arc guide groove slidably connected to the guide shaft, and the upper horizontal part of the cam slider is fixedly connected to the supporting shaft slidably connected to the bottom surface of the power source.

[0009] According to the above optimization, the shape of the arc guide groove is consistent with the sliding path of the power source on the cam slider.

[0010] According to the above optimization, the power source includes a connecting sleeve and a power spring. The connecting sleeve is arranged in the guide block and can be connected to the cam slider through the directional shaft and the guide shaft as the door body opens and closes. The power spring is installed in the connecting sleeve and the two elastic ends of the power spring are respectively pressed and connected to the inner wall of the directional shaft and the connecting sleeve, so that the elastic force of the power spring acts on the cam slider when the door body is closed.

[0011] According to the above optimization, a damper is installed in the guide block, and the cam slider is connected to the piston rod of the damper.

[0012] The advantages of the utility model are:

[0013] By utilizing the structural coordination of a single guide rail with a main shaft and a linkage shaft, the transmission connection relationship between the mounting plate and the rotating device is changed to reduce the use of components, simplify the structure, and at the same time make the rotation of the door body more stable and smooth during opening and closing.

[0014] The rotating device of this structure utilizes the structural coordination of the guide block, power source, cam slider and damper. When opening the door, the door body drives the guide block to rotate, so that the cam slider drives the power source to slide, and the power source slides to the upper plane of the cam slider, thereby unloading the force and facilitating the operation. When closing the door, the door body drives the guide block to rotate, so that the cam slider drives the power source to slide and the elastic force of the power source acts on the inclined surface of the cam slider. During this period, the damper works to realize automatic and slow closing of the door. The structure is simple and the rotation is stable, thereby ensuring the quality of product use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model.

[0016] Attached Figure 2 It is a cross-sectional view of a preferred embodiment of the utility model.

[0017] Attached Figure 3 This is a top view of a preferred embodiment of the utility model (without the mounting plate).

[0018] Attached Figure 4 This is a schematic structural diagram of a preferred embodiment of the utility model (without the guide block).

[0019] Attached Figure 5 This is an exploded view of a preferred embodiment of the utility model. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] According to the attached Figures 1 to 5 As shown in the figure, the door body single rail damping power hinge of the utility model comprises a mounting plate 1 mounted on the cabinet body and a rotating device mounted on the door body, wherein the mounting plate 1 is mounted with a main shaft 2 for rotationally connecting with the rotating device. The rotating device comprises a guide block 3, a power source 4, a cam slider 5, a damper 6 and a linkage shaft 7, wherein the guide block 3 is mounted on the door body, the cam slider 5, the power source 4 and the damper 6 are respectively mounted in the guide block 3, and the cam slider 5 is connected with the piston rod of the damper 6. The mounting plate 1 is mounted with a linkage shaft 7, the guide block 3 is provided with a single guide rail 31, the main shaft 2 passes through the single guide rail 31 and is connected with the cam slider 5, and the linkage shaft 7 is inserted into the single guide rail 31. As the door body opens and closes, the linkage shaft 7 slides relatively on the single guide rail 31, and at the same time, the power source 4 is slidably connected to the cam slider 5, so that the elastic force of the power source 4 acts on the cam slider 5 or the elastic force of the power source 4 is released on the cam slider 5.

[0022] Reference Figures 1 to 5As shown, in further detail, the bottom surface of the cam slider 5 is provided with a mounting groove 51 for sliding connection with the main shaft 2, and the shape of the mounting groove 51 is consistent with the forward and backward movement path of the cam slider 5.

[0023] Moreover, one end of the single guide rail 31 is connected to a front guide rail portion 311 that matches the mounting groove 51 . The shape of the single guide rail 31 is set to be a special-shaped guide rail that matches the swing path of the door body when opening and closing. The specific shape is shown in the figure.

[0024] When the door is opened, the guide block 3 of the rotating device rotates accordingly, thereby driving the main shaft 2 and the linkage shaft 7 to slide on the single guide rail 31 relative to the guide block 3. After the main shaft 2 is slid onto the front guide rail portion 311 along the single guide rail 31, the main shaft 2 can slide along the front guide rail portion 311 and slide backward along the installation groove 51. During the rotation, due to the shape restrictions of the installation groove 51 and the front guide rail portion 311, the main shaft 2 is oriented on the front guide rail portion 311, and the linkage shaft 7 slides relatively on the single guide rail 31 as the swing end of the guide block 3 swings to rotate around the main shaft 2. Similarly, when the door is closed, the operation is reversed.

[0025] In this way, the single guide rail 31 is used in conjunction with the main shaft 2 and the connecting shaft 7 to change the transmission connection relationship between the mounting plate 1 and the rotating device, so as to reduce the use of components, simplify the structure, and at the same time make the rotation of the door body more stable and smooth during opening and closing.

[0026] Reference Figures 1 to 5 As shown, in further detail, the cam slider 5 has an upper horizontal portion 52 and a swing convex edge 53, and the cam slider 5 is provided with an upper plane 54 that can release the elastic force of the power source 4 in parallel outside the cam slider 5 when the door body is opened, and an inclined surface 55 that can make the elastic force of the power source 4 act on the cam slider 5 when the door body is closed. The inclined surface 55 is provided on the inner side of the end of the swing convex edge 53, and the upper plane 54 is provided at the upper end of the swing convex edge 53 and connected to the upper top of the inclined surface 55.

[0027] In actual application, the guide block 3 is equipped with a guide assembly for the power source 4 to be directional and slidably connected to the cam slider 5 as the door body opens and closes, and the guide assembly includes a directional shaft 8, a guide shaft 9 and a support shaft 10. The directional shaft 8 is fixed to the positioning end of the guide block 3, and the directional end of the power source 4 is provided with a directional straight groove 43 slidably connected to the directional shaft 8. The guide shaft 9 is fixed to the swing end of the power source 4, and the guide block 3 is provided with an arc guide groove 32 slidably connected to the guide shaft 9. The upper horizontal portion 52 of the cam slider 5 is fixedly connected to the support shaft 10 slidably connected to the bottom surface of the power source 4.

[0028] Among them, the power source 4 includes a connecting sleeve 41 and a power spring 42. The connecting sleeve 41 is arranged in the guide block 3 and can be connected to the cam slider 5 through the directional shaft 8 and the guide shaft 9 as the door body opens and closes. The power spring 42 is installed in the connecting sleeve 41 and the two elastic ends of the power spring 42 are respectively pressed and connected to the inner wall of the directional shaft 8 and the connecting sleeve 41, so that the elastic force of the power spring 42 acts on the cam slider 5 when the door body is closed.

[0029] Moreover, the shape of the arc-shaped guide groove 32 is consistent with the sliding path of the power source 4 on the cam slider 5, and the specific shape is shown in the figure.

[0030] That is, when opening the door, under the linkage of the guide block 3, the main shaft 2 and the connecting shaft 7, the door body drives the guide block 3 to rotate, so that the cam slider 5 drives the power source 4 to move to the right, prompting the guide shaft 9 to move upward along the arc guide groove 32, so as to link the power source 4 to move upward, and make the connecting sleeve 41 of the power source 4 slide to the upper plane 54 of the cam slider 5, thereby realizing the door opening force unloading, simple operation, reliable and practical operation.

[0031] When closing the door, the door body drives the guide block 3 to rotate, causing the cam slider 5 to move to the left. Under the joint action of the guide groove and the spring, the connecting sleeve 41 leaves the upper plane 54 of the cam slider 5 and slides to the inclined surface 55 of the cam slider 5, so that the restoring elastic force of the spring acts on the cam slider 5 to generate a closing force, thereby realizing automatic door closing. The structure is simple and the rotation is stable.

[0032] When the door is automatically closed at a certain angle, the damper 6 intervenes to achieve the effect of automatic slow door closing, which is easy to operate, safe and practical, and effectively ensures the quality of product use.

[0033] When the door is completely closed, the main shaft 2 and the linkage shaft 7 slide onto the single guide rail 31 at the same time, so that the guide block 3 has a certain locking force to avoid misoperation, which is practical and reliable.

[0034] The above-mentioned specific embodiments are only specific implementation methods with better effects of the present utility model. Any structure that is the same or equivalent to the door body single-rail damping power hinge of the present utility model is within the protection scope of the present utility model.

Claims

1. A door body single-track damping power hinge, comprising a mounting plate (1) mounted on a cabinet body and a rotating device mounted on the door body, wherein the mounting plate (1) is provided with a main shaft (2) for rotationally connecting with the rotating device, and characterized in that: The rotating device comprises a guide block (3), a power source (4), a cam slider (5) and a linkage shaft (7); the guide block (3) is mounted on the door body; the cam slider (5) and the power source (4) are respectively mounted in the guide block (3); the mounting plate (1) is mounted with the linkage shaft (7); the guide block (3) is provided with a single guide rail (31); the main shaft (2) passes through the single guide rail (31) and is connected to the cam slider (5); the linkage shaft (7) is inserted into the single guide rail (31); as the door body opens and closes, the main shaft (2) and the linkage shaft (7) slide relatively on the single guide rail (31); and at the same time, the power source (4) is slidably connected to the cam slider (5) so that the elastic force of the power source (4) acts on the cam slider (5) or the elastic force of the power source (4) is released on the cam slider (5).

2. The door monorail damping power hinge according to claim 1, characterized in that: The bottom surface of the cam slider (5) is provided with a mounting groove (51) for sliding connection with the main shaft (2), and the shape of the mounting groove (51) is consistent with the forward and backward movement path of the cam slider (5).

3. The door body single-track damping power hinge according to claim 2, characterized in that: One end of the single guide rail (31) is connected to a front guide rail portion (311) that matches the mounting groove (51), and the shape of the single guide rail (31) is set to be a special-shaped guide rail that matches the swing path of the door body when it is opened and closed.

4. The door monorail damping power hinge according to claim 1, characterized in that: The cam slider (5) has an upper horizontal portion (52) and a swinging convex edge (53), and the cam slider (5) is provided with an upper plane (54) that can release the elastic force of the power source (4) in parallel outside the cam slider (5) when the door body is opened, and an inclined surface (55) that can make the elastic force of the power source (4) act on the cam slider (5) when the door body is closed, wherein the inclined surface (55) is arranged on the inner side of the end of the swinging convex edge (53), and the upper plane (54) is arranged at the upper end of the swinging convex edge (53) and is connected to the upper top of the inclined surface (55).

5. The door monorail damping power hinge according to claim 1, characterized in that: The guide block (3) is provided with a guide assembly for the power source (4) to be directionally slidably connected to the cam slider (5) as the door body opens and closes, the guide assembly comprising a directional shaft (8), a guide shaft (9) and a support shaft (10), the directional shaft (8) being fixed to the positioning end of the guide block (3), the directional end of the power source (4) being provided with a directional straight groove (43) slidably connected to the directional shaft (8), the guide shaft (9) being fixed to the swinging end of the power source (4), the guide block (3) being provided with an arc guide groove (32) slidably connected to the guide shaft (9), and the upper horizontal portion (52) of the cam slider (5) being fixedly connected to the support shaft (10) slidably connected to the bottom surface of the power source (4).

6. The door monorail damping power hinge according to claim 5, characterized in that: The shape of the arc-shaped guide groove (32) matches the sliding path of the power source (4) on the cam slider (5).

7. The door monorail damping power hinge according to claim 1 or 5, characterized in that: The power source (4) comprises a connecting sleeve (41) and a power spring (42). The connecting sleeve (41) is arranged in the guide block (3) and can be connected to the cam slider (5) through the directional shaft (8) and the guide shaft (9) as the door body opens and closes. The power spring (42) is installed in the connecting sleeve (41) and the two elastic ends of the power spring (42) are respectively pressed and connected to the inner wall of the directional shaft (8) and the connecting sleeve (41), so that the elastic force of the power spring (42) acts on the cam slider (5) when the door body is closed.

8. The door monorail damping power hinge according to claim 1, characterized in that: A damper (6) is installed in the guide block (3), and the cam slider (5) is connected to a piston rod of the damper (6).

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