A double-track damping power hinge for door body

Abstract

The utility model provides a double-track damping power hinge for a door body, including a mounting plate and a rotating device, the rotating device including a guide block, a power source, a cam slider, a damper and a linkage shaft, the guide block is mounted on the door body, the mounting plate is mounted with a main shaft and a linkage shaft, the guide block is provided with a main guide rail and a linkage guide rail distributed in the same plane, the main shaft is mounted on the main guide rail and passes through the main guide rail to be connected with the cam slider, the linkage shaft is mounted on the linkage guide rail, the main shaft and the linkage shaft slide relatively on the main guide rail and the linkage guide rail as the door body opens and closes, during which 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 releases the elastic force of the power source outside the cam slider. It has few parts, simple structure, high rotation stability, can unload force when opening the door, is easy to operate, and has the effect of automatically and slowly closing the door, effectively ensuring the quality of product use.

Description

Technical Field

[0001] The utility model relates to the technical field of hinges, in particular to a double-track damping power hinge for a door body. 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 double-track damping power hinge for a door body, which has few components, a simple structure, and high rotation stability. At the same time, it can unload the force when opening the door, is easy to operate, and has the effect of automatically and slowly closing the door, thereby effectively ensuring the quality of product use.

[0004] The inventive object of the utility model is achieved as follows: a double-track damping power hinge for a door body, comprising a mounting plate installed on a cabinet body and a rotating device installed on the door body, wherein the rotating device comprises a guide block, a power source, a cam slider and a connecting shaft, the guide block is installed on the door body, the mounting plate is installed with a main shaft and a connecting shaft, the guide block is provided with a main guide rail and a connecting guide rail distributed in the same plane, the main shaft is installed on the main guide rail and passes through the main guide rail to be connected with the cam slider, the connecting shaft is installed on the connecting guide rail, the main shaft and the connecting shaft slide relatively on the main guide rail and the connecting guide rail as the door body opens and closes, during which 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 main guide rail includes a directional rail portion for positioning the main shaft during door opening and a locking rail portion for providing locking force to the main shaft during door closing. The directional rail portion is connected to the locking rail portion to form a V-shaped main guide rail with an angular position.

[0006] According to the above optimization, the main guide rail passes through the guide block, and the bottom of the cam slider is provided with a mounting groove connected to the directional rail portion of the main guide rail.

[0007] According to the above optimization, the linkage guide rail is configured as an arc-shaped guide rail arranged around the main guide rail, and the shape of the arc-shaped guide rail is consistent with the opening path of the door body.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] According to the above optimization, the guide block is provided with a damper, the cylinder body of the damper is installed in the guide block, and the cam slider is provided with a connecting groove for connecting with the piston rod of the damper.

[0013] The advantages of the utility model are:

[0014] By utilizing the structural coordination of the main guide rail, the linkage guide rail, the main shaft and the 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 door body rotate more stably and smoothly during opening and closing.

[0015] By adopting the rotating device of this structure, using the structural coordination of the guide block, the power source and the cam slider, 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 to achieve force unloading; 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 to achieve automatic door closing; it is convenient to operate, the rotation is stable, and the use effect of the product is improved.

[0016] When the door closing damper works, the door can be closed automatically and slowly, and the structure is simple, which ensures the use quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model.

[0018] Attached Figure 2 It is a cross-sectional view of a preferred embodiment of the utility model.

[0019] Attached Figure 3 This is a top view of a preferred embodiment of the utility model (without the mounting plate).

[0020] Attached Figure 4 This is a schematic structural diagram of a preferred embodiment of the utility model (without the guide block).

[0021] Attached Figure 5 This is an exploded view of a preferred embodiment of the utility model. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings.

[0023] According to the attached Figures 1 to 5As shown in the figure, the double-track damping power hinge for door body 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 rotating device comprises a guide block 2, a power source 3, a cam slider 4, a damper 10 and a linkage shaft 6, wherein the guide block 2 is mounted on the door body, and the mounting plate 1 is mounted with a main shaft 5 and a linkage shaft 6. The guide block 2 is provided with a main guide rail 21 and a linkage guide rail 22 distributed in the same plane, the main shaft 5 is mounted on the main guide rail 21 and passes through the main guide rail 21 to be connected with the cam slider 4, and the linkage shaft 6 is mounted on the linkage guide rail 22. The main shaft 5 and the linkage shaft 6 slide relatively on the main guide rail 21 and the linkage guide rail 22 as the door body opens and closes, during which the power source 3 is slidably connected to the cam slider 4, so that the elastic force of the power source 3 acts on the cam slider 4 or the elastic force of the power source 3 is released on the cam slider 4.

[0024] Reference Figures 1 to 5 As shown, in further detail, the main guide rail 21 includes a directional rail portion 211 for positioning the main shaft 5 during the door opening and a locking rail portion 212 for providing a locking force to the main shaft 5 during the door closing, and the directional rail portion 211 is connected to the locking rail portion 212 to form a V-shaped main guide rail 21 with an angle position. The specific shape is shown in the figure.

[0025] The main guide rail 21 passes through the guide block 2, and the bottom of the cam slider 4 is provided with a mounting groove 41 connected to the directional rail portion 211 of the main guide rail 21. The shape of the mounting groove 41 is consistent with the shape of the directional rail portion 211 of the main guide rail 21; the linkage guide rail 22 is configured as an arc-shaped guide rail arranged around the main guide rail 21, and the shape of the arc-shaped guide rail is consistent with the door opening path.

[0026] The main guide rail 21 and the linkage guide rail 22 of the present structure enable the guide block 2 to move linearly outward or inward relative to the mounting plate 1 during the opening and closing of the door, so that there is a sufficient gap between the door and the mounting plate 1 to avoid mutual interference between the door and the cabinet during opening and closing.

[0027] When the door is opened, the guide block 2 of the rotating device rotates accordingly, pushing the main shaft 5 away from the locking rail portion 212 of the main guide rail 21 and sliding to the directional rail portion 211, and as the door is opened more, the main shaft 5 is pushed to move along the end direction of the directional rail portion 211, so that there is enough clearance between the guide block 2 and the mounting plate 1, ensuring that the door is opened smoothly and stably, and avoiding the possibility of mutual interference between the door and the cabinet. During the rotation, the linkage shaft 6 moves relatively along the linkage guide rail 22 to open the door.

[0028] When the door is closed, the guide block 2 rotates accordingly, pushing the main shaft 5 away from the guide rail portion 211 of the main guide rail 21 and sliding to the locking portion, thereby reducing the closing amplitude of the door and pushing the main shaft 5 to move along the end direction of the locking portion of the main guide rail 21. When the main shaft 5 and the linkage shaft 6 are respectively at the end of the locking portion of the main guide rail 21 and the inner end of the linkage guide rail 22, the gap between the guide block 2 and the mounting plate 1 is overcome, the door is completely closed, and a certain locking force is provided to ensure the use effect of the product.

[0029] In this way, the main guide rail 21, the connecting guide rail 22 are coordinated with the main shaft 5 and the connecting shaft 6 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 make the rotation of the door body more stable and smooth during opening and closing.

[0030] Reference Figures 1 to 5 As shown, in further detail, the cam slider 4 has an upper horizontal portion 42 and a swing convex edge 43. The cam slider 4 is provided with an upper plane 44 that can release the elastic force of the power source 3 in parallel outside the cam slider 4 when the door body is opened, and an inclined surface 45 that can make the elastic force of the power source 3 act on the cam slider 4 when the door body is closed. The inclined surface 45 is provided on the inner side of the end of the swing convex edge 43, and the upper plane 44 is provided at the upper end of the swing convex edge 43 and connected to the upper top of the inclined surface 45.

[0031] In actual application, the guide block 2 is equipped with a guide assembly for the power source 3 to be directionally slidably connected to the cam slider 4 as the door body opens and closes, and the guide assembly includes a directional shaft 7, a guide shaft 8 and a support shaft 9. The directional shaft 7 is fixed to the positioning end of the guide block 2, and the directional end of the power source 3 is provided with a directional straight groove 33 slidably connected to the directional shaft 7. The guide shaft 8 is fixed to the swing end of the power source 3, and the guide block 2 is provided with an arc guide groove 23 slidably connected to the guide shaft 8. The upper horizontal portion 42 of the cam slider 4 is fixedly connected to the support shaft 9 slidably connected to the bottom surface of the power source 3.

[0032] The power source 3 includes a connecting sleeve 31 and a power spring 32. The connecting sleeve 31 is arranged in the guide block 2 and can be connected to the cam slider 4 through the directional shaft 7 and the guide shaft 8 as the door body opens and closes. The power spring 32 is installed in the connecting sleeve 31 and the two elastic ends of the power spring 32 are respectively pressed and connected to the inner wall of the directional shaft 7 and the connecting sleeve 31, so that the elastic force of the power spring 32 acts on the cam slider 4 when the door body is closed.

[0033] Moreover, the shape of the arc-shaped guide groove 23 is consistent with the sliding path of the power source 3 on the cam slider 4. The specific shape is shown in the figure.

[0034] That is, when opening the door, under the linkage of the guide block 2, the main shaft 5 and the connecting shaft 67, the door body drives the guide block 2 to rotate, so that the cam slider 4 drives the power source 3 to move to the right, prompting the guide shaft 8 to move upward along the arc guide groove 23, so as to link the power source 3 to move upward, and make the connecting sleeve 31 of the power source 3 slide to the upper plane 44 of the cam slider 4, thereby realizing the door opening force unloading, simple operation, reliable and practical operation.

[0035] When closing the door, the door body drives the guide block 2 to rotate, causing the cam slider 4 to move to the left. Under the joint action of the arc guide groove 23 and the spring, the connecting sleeve 31 leaves the upper plane 44 of the cam slider 4 and slides to the inclined surface 45 of the cam slider 4, so that the restoring elastic force of the spring acts on the cam slider 4 to generate a closing force, thereby realizing automatic door closing. The structure is simple and the rotation is stable.

[0036] Reference Figures 1 to 5 As shown, in further detail, the guide block 2 is provided with a damper 10, the cylinder body of the damper 10 is installed in the guide block 2, and the cam slider 4 is provided with a connecting groove (46) for connecting with the piston rod of the damper 10.

[0037] When the door is automatically closed at a certain angle, the damper 10 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.

[0038] The above-mentioned specific embodiments are only specific implementation methods with better effects of the utility model. Any structure that is the same or equivalent to the double-track damping power hinge for door body of the utility model is within the protection scope of the utility model.

Claims

1. A double-track damping power hinge for a door, comprising a mounting plate (1) mounted on a cabinet and a rotating device mounted on the door, characterized in that: The rotating device comprises a guide block (2), a power source (3), a cam slider (4) and a linkage shaft (6); the guide block (2) is mounted on the door body; the mounting plate (1) is mounted with a main shaft (5) and a linkage shaft (6); the guide block (2) is provided with a main guide rail (21) and a linkage guide rail (22) distributed in the same plane; the main shaft (5) is mounted on the main guide rail (21) and passes through the main guide rail (21) to be connected to the cam slider (4); the linkage shaft (6) is mounted on the linkage guide rail (22); the main shaft (5) and the linkage shaft (6) slide relatively on the main guide rail (21) and the linkage guide rail (22) as the door body opens and closes; during this period, the power source (3) is slidably connected to the cam slider (4) so ​​that the elastic force of the power source (3) acts on the cam slider (4) or the elastic force of the power source (3) is released on the cam slider (4).

2. The double-track damping power hinge for door according to claim 1, characterized in that: The main guide rail (21) comprises a guide rail portion (211) for positioning the main shaft (5) when the door is opened and a locking rail portion (212) for providing the main shaft (5) with a locking force when the door is closed. The guide rail portion (211) is connected to the locking rail portion (212) to form a V-shaped main guide rail with an angular position.

3. The double-track damping power hinge for door according to claim 2, characterized in that: The main guide rail (21) passes through the guide block (2), and a mounting groove (41) communicating with the orientation rail portion (211) of the main guide rail (21) is provided at the bottom of the cam slider (4).

4. The double-track damping power hinge for door according to claim 1, characterized in that: The linkage guide rail (22) is configured as an arc-shaped guide rail disposed around the main guide rail (21), and the shape of the arc-shaped guide rail is consistent with the door opening path.

5. The double-track damping power hinge for door according to claim 1, characterized in that: The cam slider (4) has an upper horizontal portion (42) and a swinging convex edge (43), and the cam slider (4) is provided with an upper plane (44) that can release the elastic force of the power source (3) in parallel outside the cam slider (4) when the door body is opened, and an inclined surface (45) that can make the elastic force of the power source (3) act on the cam slider (4) when the door body is closed, wherein the inclined surface (45) is arranged on the inner side of the end of the swinging convex edge (43), and the upper plane (44) is arranged at the upper end of the swinging convex edge (43) and is connected to the upper top of the inclined surface (45).

6. The double-track damping power hinge for door according to claim 1, characterized in that: The guide block (2) is provided with a guide assembly for the power source (3) to be directionally slidably connected to the cam slider (4) as the door body opens and closes, the guide assembly comprising a directional shaft (7), a guide shaft (8) and a support shaft (9), the directional shaft (7) being fixed to the positioning end of the guide block (2), the directional end of the power source (3) being provided with a directional straight groove (33) slidably connected to the directional shaft (7), the guide shaft (8) being fixed to the swinging end of the power source (3), the guide block (2) being provided with an arc guide groove (23) slidably connected to the guide shaft (8), and the upper horizontal portion (42) of the cam slider (4) being fixedly connected to the support shaft (9) slidably connected to the bottom surface of the power source (3).

7. The double-track damping power hinge for door according to claim 6, characterized in that: The shape of the arc-shaped guide groove (23) matches the sliding path of the power source (3) on the cam slider (4).

8. The double-track damping power hinge for door according to claim 1 or 5, characterized in that: The power source (3) comprises a connecting sleeve (31) and a power spring (32). The connecting sleeve (31) is arranged in the guide block (2) and can be connected to the cam slider (4) through the directional shaft (7) and the guide shaft (8) as the door body opens and closes. The power spring (32) is installed in the connecting sleeve (31) and the two elastic ends of the power spring (32) are respectively pressed and connected to the inner wall of the directional shaft (7) and the connecting sleeve (31), so that the elastic force of the power spring (32) acts on the cam slider (4) when the door body is closed.

9. The double-track damping power hinge for door according to claim 1, characterized in that: The guide block (2) is provided with a damper (10), the cylinder body of the damper (10) is installed in the guide block (2), and the cam slider (4) is provided with a connecting groove (46) for connecting with the piston rod of the damper (10).

Images