Hinge device and opening and closing device

Abstract

The utility model discloses hinge equipment and an opening and closing device.The hinge equipment comprises a first hinge base, a second hinge base and a reinforcing ring, the first hinge base comprises a first hinge part, the second hinge base comprises a second hinge part, the second hinge part is rotatably connected with the first hinge part, and one end of the first hinge part is in butt joint with one end of the second hinge part; the first hinge part and the second hinge part are made of plastic; and the reinforcing ring is clamped at the end part of the butt joint end of the first hinge part and the second hinge part, and is made of metal. According to the embodiment of the invention, the reinforcing ring is arranged at the end part of the butt joint end of the first hinge part and the second hinge part, so that the overall strength of the hinge equipment is greatly enhanced, the problem that the connecting end of spinning hinge equipment in related technologies is easy to crack is solved, the service life of the hinge equipment is prolonged, and the reliability of the hinge equipment is improved.

Description

Technical Field

[0001] This disclosure relates to the field of hinge devices, and more particularly to a hinge device and an opening / closing mechanism. Background Technology

[0002] A hinge is a device installed on a door to open and close it. For example, a hinge installed in a freezer includes a fixed base connected to the freezer body, a rotating base connected to the door body, and a spindle passing through the fixed base and the rotating base. Some hinges also include a spring element.

[0003] Currently, the connection between the fixed seat and the rotating seat is subjected to a large force, and the connection end is the weakest point in the overall structure of the hinge device. Since the fixed seat and the rotating seat are made of plastic, they are very easy to crack, which reduces the service life of the hinge device and reduces its reliability. Utility Model Content

[0004] As a first aspect of the present disclosure, the present disclosure provides a hinge device, including...

[0005] The first hinge seat includes a first hinge portion;

[0006] The second hinge seat includes a second hinge portion, which is rotatably connected to the first hinge portion, and one end of the first hinge portion and the second hinge portion are mated together. The material of the first hinge portion and the second hinge portion is plastic.

[0007] A reinforcing ring is clamped at the end of the first hinge and the second hinge where they meet. The reinforcing ring is made of metal.

[0008] In some possible implementations, one end of the first hinge portion is provided with a stepped opening, and one end of the second hinge portion is provided with an end shaft portion that mates with the stepped opening. The diameter of the end shaft portion is smaller than the diameter of the second hinge portion. The end shaft portion is inserted into the stepped opening, and a reinforcing ring is clamped between the outer end face of the stepped opening and the end of the second hinge portion.

[0009] In some possible implementations, the reinforcing ring is detachably fitted onto the end shaft, or the reinforcing ring is integrally formed with the end shaft.

[0010] As a second aspect of the present disclosure, an opening and closing device is provided, the opening and closing device comprising:

[0011] Main body of the device;

[0012] The door body is closably connected to the device body via a hinge device according to the first aspect embodiment.

[0013] The technical solution of this disclosure can achieve the following beneficial effects: By providing a reinforcing ring at the end of the first hinge part and the second hinge part, the overall strength of the hinge device is greatly enhanced, which improves the problem of easy cracking at the connection end of the spinning hinge device in the related technology, increases the service life of the hinge device, and improves the reliability of the hinge device. Attached Figure Description

[0014] Figure 1a This is a schematic diagram of the main assembly of the hinge device and opening / closing mechanism according to an embodiment of the present disclosure;

[0015] Figure 1b This is an exploded view of the main body of the hinge device and opening / closing mechanism according to an embodiment of this disclosure;

[0016] Figure 1c This is an exploded view of the hinge device according to an embodiment of the present disclosure;

[0017] Figure 2a This is a side view of the second hinged seat structure according to an embodiment of the present disclosure;

[0018] Figure 2b This is a front view schematic diagram of the second hinged seat structure according to an embodiment of the present disclosure;

[0019] Figure 2c This is a rear view schematic diagram of the second hinge seat structure according to an embodiment of this disclosure;

[0020] Figure 3a This is a bottom view of the main body of the device according to an embodiment of the present disclosure;

[0021] Figure 3b This is a top view of the main body of the device according to an embodiment of the present disclosure;

[0022] Figure 4a This is a schematic diagram of the rear view of the first hinge seat according to an embodiment of the present disclosure;

[0023] Figure 4b This is a side view of the first hinge seat according to an embodiment of the present disclosure;

[0024] Figure 5a This is a schematic diagram of a piston according to an embodiment of the present disclosure;

[0025] Figure 5b This is a schematic diagram of a piston according to an embodiment of this disclosure. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] Reference Figures 1a-1cAs shown, this embodiment of the present disclosure provides a hinge device 100, including a first hinge base 10, a second hinge base 20, and a reinforcing ring 400. The first hinge base 10 includes a first hinge portion 11. The second hinge base 20 includes a second hinge portion 21. The second hinge portion 21 is rotatably connected to the first hinge portion 11, and one end of the first hinge portion 11 and the second hinge portion 21 are mated together. The first hinge portion 11 and the second hinge portion 21 are made of plastic. The reinforcing ring 400 is clamped at the end of the connection between the first hinge portion 11 and the second hinge portion 21, and the reinforcing ring 400 is made of metal.

[0028] Reference Figure 1b and Figure 1c As shown, by way of example, both the first hinge portion 11 and the second hinge portion 21 are cylindrical in shape. The first hinge portion 11 and the second hinge portion 21 are rotatably connected by a pivot, and one end of the first hinge portion 11 and the second hinge portion 21 are joined together. That is, one end of the first hinge portion 11 is inserted into one end of the second hinge portion 21, or one end of the second hinge portion 21 is inserted into one end of the first hinge portion 11.

[0029] In related technologies, the ends of the connecting parts of the first hinge portion 11 and the second hinge portion 21 are subjected to large forces. Since the materials of the first hinge portion 11 and the second hinge portion 21 are plastic, they are very prone to cracking at this location. However, the present invention addresses this by clamping a reinforcing ring 400 of metal material at the mating ends of the first hinge portion 11 and the second hinge portion 21, thereby significantly strengthening the overall strength of the hinge device. This improves the problem of easy cracking at the connecting ends of the spun hinge device in related technologies, increases the service life of the hinge device, and enhances its reliability.

[0030] For example, the reinforcing ring 400 is made of metal. For instance, the reinforcing ring 400 may be made of steel, stainless steel, or spring steel. The specific material of the reinforcing ring 400 is not limited here and can be chosen according to actual usage requirements.

[0031] In one disclosed embodiment, a stepped opening 14 is provided at one end of the first hinge portion 11, and a through hole is provided in the first hinge portion 11. The diameter of the through hole at the end near the second hinge portion 21 is larger than the diameter at the end away from the second hinge portion 21, thereby forming a limiting end in the through hole of the first hinge portion 11. That is, a stepped opening 14 is formed at one end of the first hinge portion 11. An end shaft portion 24 that mates with the stepped opening 14 is provided at one end of the second hinge portion 21. The diameter of the end shaft portion 24 is smaller than the diameter of the second hinge portion 21, thereby forming a limiting end between the end shaft portion 24 and the second hinge portion 21.

[0032] For example, the end shaft portion 24 is inserted into the stepped opening 14, and the length of the end shaft portion 24 is less than the depth of the stepped opening 14. That is, after the end shaft portion 24 is inserted into the stepped opening 14 and limited by the limiting end of the stepped opening 14, at least a portion of the end shaft portion 24 is still outside the stepped opening 14, thereby forming an annular groove between the second hinge portion 21 and the first hinge portion 11. The reinforcing ring 400 is clamped in the annular groove formed by the second hinge portion 21 and the first hinge portion 11. The diameter of the reinforcing ring 400 is equal to the diameter of the end shaft portion 24, and the width of the reinforcing ring is approximately equal to the width of the annular groove.

[0033] In one embodiment, the reinforcing ring 400 is detachably sleeved on the end shaft portion 24. The reinforcing ring 400 is detachably mounted on the end shaft portion 24, which facilitates the removal and installation of the reinforcing ring 400.

[0034] In one embodiment, the reinforcing ring 400 is integrally formed with the end shaft portion 24. The reinforcing ring 400 can be directly formed on the end shaft portion 24 by injection molding.

[0035] Reference Figures 1a-1c as well as Figure 3a and Figure 3b As shown, this embodiment of the present disclosure provides a hinge device 100, which includes a first hinge seat 10 and a second hinge seat 20. The second hinge seat 20 further includes a second mounting portion 22. The second mounting portion 22 is used to mount and embed in a mounting cavity of the opening and closing device body 201. The mounting cavity 201 includes a front sidewall 2011 and inner sidewalls 2012 located on both sides of the front sidewall 2011. A spring sheet structure 90 is provided on the side of the second mounting portion 22 near the inner sidewall 2012. The spring sheet structure 90 includes a fixed end 92 and a free end 91. The fixed end 92 is connected to the second mounting portion 22, and the free end 91 is at least partially protruding from the side. The free end 91 can elastically extend and retract relative to the fixed end 92 to move closer to or away from the side.

[0036] A spring-loaded structure 90 is provided on each of the two inner sidewalls 2012 of the second mounting part 22 near the mounting cavity 201 (a spring-loaded structure 90 is provided on each of the left and right sidewalls of the second mounting part 22 in the figure). It should be noted that the inner sidewall 2012 of the mounting cavity 201 of the opening and closing device body 200 is recessed to form a second snap-fit ​​groove. The spring-loaded structure 90 cooperates with the second snap-fit ​​groove to snap and fix it, which can ensure the stability and reliability of the second mounting part 22.

[0037] Reference Figure 1a and Figure 1bAs shown, exemplarily, the second mounting portion 22 is used to be installed and embedded in the mounting cavity of the opening and closing device body 200. The second mounting portion 22 is provided with a second mounting hole 221, which is used to cooperate with a fastener 300 to fix the second mounting portion 22 to the opening and closing device body 200. The second mounting hole 221 extends through the front and back of the second mounting portion 22, and the fastener 300 passes through the second mounting hole 221 to fix the second mounting portion 22 to the opening and closing device body 200.

[0038] For example, a fourth opening is provided on the outer side wall of the mounting cavity near the opening and closing device body 200, and an assembly hole is provided on the side wall of the mounting cavity away from the fourth opening, corresponding to the second mounting hole 221. Fasteners (e.g. screws) pass through the second mounting hole 221 and the assembly hole to fix the second mounting part 22 to the opening and closing device body 200.

[0039] For example, the second mounting part 22 is used to mount and embed in the mounting cavity 201 of the opening and closing device body 200. The mounting cavity 201 includes a front sidewall 2011, and a spring-loaded structure 90 is provided on the front of the second mounting part 22 near the front sidewall 2011. The spring-loaded structure 90 includes a free end 91 and a fixed end 92. The fixed end 92 is connected to the second mounting part 22, and the free end 91 protrudes at least partially from the front. The free end 91 can elastically extend and retract relative to the fixed end 92 to move closer to or further away from the front.

[0040] For example, the front sidewall 2011 of the opening and closing device body 200 is provided with two first snap-fit ​​grooves, and two spring clip structures 90 are provided. The spring clip structures 90 are located in front of the second mounting portion 22 and extend along the vertical direction of the second mounting portion 22. The front side of the second mounting portion 22 is provided with two vertically oriented concave grooves, the bottom ends of which penetrate the bottom end of the second mounting portion 22. The spring clip structures 90 are disposed in the concave grooves, and the fixed end 92 of the spring clip structure 90 is connected to the top end of the concave groove, while the free end 91 of the spring clip structure 90 protrudes from the concave groove. The free end 91 is wedge-shaped, with the wedge-shaped surface facing outward. The free end 91 protrudes relative to the fixed end 92.

[0041] For example, the second mounting part 22 is installed and embedded in the mounting cavity 201, and the free end 91 of the spring structure 90 can be snapped into the first snap-fit ​​groove, thereby realizing the snap-fit ​​fixation of the second mounting part 22.

[0042] For example, when the second mounting part 22 is inserted along the mounting cavity 201, the free end 91 of the spring sheet structure 90 is subjected to pressure from the front side wall of the mounting cavity, thereby elastically contracting into the concave groove. When the second mounting part 22 is inserted into place, that is, when the spring sheet structure 90 is in place in the first locking groove, the free end 91 of the spring sheet structure 90 recovers its elastic deformation and locks into the first locking groove, thereby fixing the second mounting part 22 and the mounting cavity.

[0043] For example, the first hinge seat 10 is a rotating seat, and the second hinge seat 20 is a fixed seat. The hinge device can be connected between the door and the main body of the opening and closing device (e.g., a freezer), so that the door and the main body are hinged. The second mounting part 22 may be provided with a second mounting hole 221, and the second hinge seat 20 can be fixedly connected to the main body 200 of the opening and closing device by mounting screws through the second mounting hole 221.

[0044] For example, the first hinge seat 10 can be connected to the side wall of the door of the opening and closing device and rotate with the door. The second hinge seat 20 is connected to the main body 200 of the opening and closing device through the second mounting part 22. When the door and the main body 200 of the opening and closing device are closed, the first hinge part 11 and the second hinge part 21 can be regarded as being on the same plane.

[0045] For example, the hinge device has a first posture and a second posture. The first hinge seat 10 can reciprocate relative to the second hinge seat 20 within a preset angle range, causing the first mating structure and the second mating structure to slide relative to each other, so that the hinge device can switch between the first posture and the second posture. When the hinge device is assembled, the first posture of the hinge device can correspond to the closed state of the door of the opening and closing device and the state with a small opening angle of the door, and the second posture can correspond to the maximum opening state of the door of the opening and closing device and the state with a large opening angle of the door.

[0046] For example, the second mounting portion 22 is used to be installed and embedded in the mounting cavity of the opening and closing device body 200. The opening and closing device body 200 has a mounting cavity 201, which may include a first cavity and a second cavity arranged in a left-right direction. The depth of the first cavity is greater than the depth of the second cavity. The first hinge seat 10 is installed through the second cavity, and the second hinge seat 20 is installed through the first cavity. For example, the second mounting portion 22 of the second hinge seat 20 is completely installed and embedded in the second cavity of the opening and closing device body 200, and the second hinge portion 21 is at least partially located in the second cavity. The first hinge portion 11 is installed through the first cavity and is at least partially located outside the first cavity.

[0047] For example, the second mounting part 22 is embedded in the mounting cavity of the opening and closing device body 200. The second mounting part 22 can be spaced a certain distance from the inner wall of the mounting cavity or can be attached to the inner wall of the mounting cavity. For example, in the front-back direction of the opening and closing device body, the second mounting part 22 can be limited by the inner wall of the mounting cavity. In the vertical direction of the opening and closing device body, the second mounting part 22 can be limited by the bottom of the mounting cavity. This prevents the hinge device from tilting backward under force, thereby achieving an anti-tilting effect, improving the reliability of the hinge device, and preventing the hinge device from loosening after long-term use.

[0048] The second mounting part 22 can be fixedly connected to the main body of the opening and closing device by fasteners passing through the second mounting hole 221, ensuring the stability of the connection between the second hinge seat 20 and the main body of the opening and closing device. Furthermore, the second mounting part 22 can also be embedded in the mounting cavity 201 of the main body 200 of the opening and closing device. The mounting cavity 201 can further limit the movement of the second mounting part 22, preventing the hinge device from tilting backward under force, achieving an anti-tilting effect, improving the stability and reliability of the hinge device, and preventing the hinge device from loosening after long-term use. Moreover, the spring structure 90 can fix the second fixing part 22, further ensuring the reliability of the second fixing part 22.

[0049] Reference Figures 1b-1c , Figures 2a-2c , Figures 3a-3b As shown, in one disclosed embodiment, the second mounting portion 22 is provided with a first clearance portion 225 near the bottom of the front sidewall 2011, and the front sidewall 2011 is provided with a first mating portion 2011a that is adapted to the first clearance portion 225.

[0050] Reference Figures 2a-2c , Figure 3b As shown, exemplarily, the first clearance portion 225 can be wedge-shaped. For example, the first clearance portion 225 is a wedge-shaped surface that slopes from the bottom of the second mounting portion 22 to the front of the second mounting portion 22. The first mating portion 2011a can be an inclined surface that mates with the wedge-shaped surface of the first clearance portion 225, and the inclination angle of the first clearance portion 225 is not limited here. It should be noted that the first clearance portion 225 can also be other shapes or recessed shapes, as long as the shape of the first mating portion 2011a matches that of the first clearance portion 225.

[0051] Reference Figure 2bAs shown, in one disclosed embodiment, the second mounting hole 221 includes a first sub-hole 2211 and a second sub-hole 2212. The diameter of the first sub-hole 2211 is larger than the diameter of the second sub-hole 2212, and the second sub-hole 2212 is disposed away from the front relative to the first sub-hole 2211. The side of the second mounting portion 22 is provided with a through area S that communicates with the first sub-hole. The fixed end 92 is connected to the through area S, and the free end 91 protrudes from the side and can extend and retract relative to the fixed end 92 to move closer to or further away from the through area S.

[0052] For example, the inner sidewall 2012 of the mounting cavity 201 of the opening and closing device body 200 is recessed to form a second snap-fit ​​groove, and the spring sheet structure 90 cooperates with the second snap-fit ​​groove to snap-fit ​​and fix it, so as to ensure the stability and reliability of the second mounting part 22.

[0053] For example, the thickness of the through area (in the thickness direction of the second mounting portion) can be less than the depth of the first sub-hole 2211. The fixed end 92 is fixedly connected to the side of the through area S near the bottom surface of the second mounting portion, and the free end 91 gradually protrudes from the side of the second mounting portion in a direction away from the fixed end 92. When the second mounting portion 22 is inserted along the mounting cavity, the free end 91 of the spring structure 90 is elastically contracted to the through area by the pressure of the inner wall of the mounting cavity. When the second mounting portion 22 is inserted into place, that is, when the spring structure 90 is in the second locking groove, the free end 91 of the spring structure 90 recovers its elastic deformation and locks into the second locking groove, thereby fixing the second mounting portion 22 and the mounting cavity.

[0054] In one disclosed embodiment, the thickness of the second mounting portion 22 is less than the diameter of the second hinge portion 21, and the step difference between the back surface of the second mounting portion 22 and the back surface of the second hinge portion 21 is less than or equal to a preset value. The thickness of the second mounting portion 22 can be understood as the dimension of the second mounting portion 22 in the direction perpendicular to the axis of the second hinge portion 21 (front-back direction in the figure).

[0055] It should be noted that the step difference between the back surface of the second mounting part 22 and the back surface of the second hinge part 21 is less than or equal to a preset value. This can be understood as the back surface of the second mounting part 22 and the back surface of the second hinge part 21 being approximately flush. For example, the step difference can be 0, meaning the back surface of the second mounting part 22 and the back surface of the second hinge part 21 are flush, i.e., they are in the same plane. With this arrangement, the back surface of the second mounting part 22 and the back surface of the second hinge part 21 can both abut against the inner wall of the device body, thus improving the reliability of the second hinge seat's fixation.

[0056] It should be noted that the specific value of the step difference between the back of the second mounting part 22 and the back of the second hinge part 21 is not limited here. For example, the step difference between the back of the second mounting part 22 and the back of the second hinge part 21 can be 5mm-8mm.

[0057] In one embodiment, the back side of the second mounting portion 22 is flush with the back side of the second hinge portion 21, and both the back side of the second mounting portion 22 and the back side of the second hinge portion 21 are planar. The back side of the second mounting portion 22 and the back side of the second hinge portion 21 are flush with each other.

[0058] Reference Figure 2c As shown, in one embodiment, the second mounting portion 22 may be provided with multiple grooves, that is, the second mounting portion 22 is provided with a second reinforcing rib 23, and the back side of the second mounting portion 22 can be understood as the surface of the second reinforcing rib.

[0059] Reference Figure 2a and Figure 2c As shown, in one disclosed embodiment, the second mounting portion 22 includes a back surface 222 and a bottom surface 223, both of which are planar. The back surface 222 is fitted against the inner wall of the mounting cavity, and the bottom surface 223 is fitted against the bottom surface of the mounting cavity. The back surface 222's fit against the inner wall of the mounting cavity allows the inner wall of the mounting cavity to limit the back of the second mounting portion, preventing it from tilting backward.

[0060] In one disclosed embodiment, the thickness d of the second mounting portion 22 gradually increases from the end of the second mounting portion 22 away from the second hinge portion 21 to the end of the second mounting portion 22 closer to the second hinge portion 21.

[0061] In one disclosed embodiment, the thickness d of the second mounting portion 22 gradually increases from the end of the second mounting portion 22 away from the second hinge portion 21 to the end of the second mounting portion 22 closer to the second hinge portion 21. The second mounting portion 22 also includes a front face 224, which is disposed opposite to the back face of the second mounting portion 22, and the front face 224 and the back face of the second mounting portion 22 are disposed at an acute angle.

[0062] For example, the thickness d at the bottom surface of the second mounting portion 22 is less than the thickness d at the position of the second mounting portion 22 near the second hinge portion 21. That is, the thickness d of the second mounting portion 22 gradually increases from the bottom surface to the top surface near the second hinge portion 21.

[0063] For example, the back surface and bottom surface of the second mounting part 22 can be set at approximately a right angle, and the front surface 224 of the second mounting part 22 is set at an acute angle relative to the vertical direction, so that the cross-section of the second mounting part 22 is approximately a right trapezoid, and the front surface 224 of the second mounting part 22 is the hypotenuse of the right trapezoid.

[0064] The hinge device of this disclosure gradually increases the thickness of the second mounting portion 22 from the end of the second mounting portion 22 away from the second hinge portion 21 to the end of the second mounting portion 22 closer to the second hinge portion 21, and the front end 224 of the second mounting portion 22 is set at an acute angle to the back end of the second mounting portion 22. That is, the second mounting portion 22 is generally shaped like a right trapezoid. The mounting cavity of the device body can be adapted to the second mounting portion 22 and set as a right trapezoidal mounting groove. There can be a gap between the bottom surface of the second mounting portion 22 and the mounting cavity. This can ensure that the insertion fit of the second mounting portion 22 is more compact and reduce gaps.

[0065] Reference Figure 1a and Figure 1c As shown, in one disclosed embodiment, the first hinge seat 10 further includes a first mounting portion 12, the first hinge portion 11 and the second hinge portion 21 are arranged along the central axis, the first hinge portion 11 and the second hinge portion 21 can be rotatably connected by a connecting shaft, and the first mounting portion 12 and the second mounting portion 22 are respectively located on both sides of the central axis.

[0066] For example, the first mounting portion 12 and the second mounting portion 22 are located on opposite sides of the central axis. For instance, the first mounting portion 12 is generally offset to the left of the central axis, and the second mounting portion 22 is generally offset to the right of the central axis. Alternatively, the first mounting portion 12 is generally offset to the right of the central axis, and the second mounting portion 22 is generally offset to the left of the central axis.

[0067] For example, the first mounting portion 12 and the second mounting portion 22 are respectively located on different sides of the first hinge seat and the second hinge seat. For instance, when the opening and closing device is in the closed state, the second mounting portion 22 is located on the back side of the second hinge portion 21 near the mounting cavity, and the first mounting portion 12 is located on the back side of the first hinge portion 11 away from the mounting cavity. It should be noted that, as Figure 1b As shown, the back of the mounting cavity can represent a surface on the main body of the opening and closing device that mates with the second mounting hole. The back of the mounting cavity is adapted to the back of the second mounting part 22.

[0068] In one disclosed embodiment, the thickness d of the second mounting portion 22 is 10mm-14mm. Exemplarily, the thickness d of the second mounting portion 22 can be understood as the average thickness of the second mounting portion 22, or it can also be understood as the thickness of the second mounting portion 22 at all positions in the height direction. For example, the thickness d of the second mounting portion 22 can be 10mm, 10.8mm, 11mm, 12mm, 13mm, 14mm, etc. The specific value of the thickness d of the second mounting portion 22 can be set according to actual usage requirements.

[0069] In one disclosed embodiment, the sum of the heights h of the back surfaces of the second mounting portion 22 and the second hinge portion 21 is less than 40 mm. Exemplarily, the back surface of the second hinge portion 21 can represent the planar portion adjacent to the second mounting portion 22. The sum of the heights h of the back surfaces of the second mounting portion 22 and the second hinge portion 21 is less than 40 mm. Designing the back surfaces of the second mounting portion 22 and the second hinge portion 21 to be too high would result in an excessively high mounting box for the corresponding device body, potentially affecting the transportation of the opening and closing device and also potentially impacting the internal structure of the opening and closing device body. Setting the sum of the heights of the back surfaces of the second mounting portion 22 and the second hinge portion 21 to be less than 40 mm is appropriate, saving materials and facilitating transportation. Furthermore, the height of the second mounting portion 22 can be set as needed to ensure a more stable hinge device.

[0070] Reference Figures 1a-1c As shown, in one disclosed embodiment, the first hinge seat 10 further includes a first mounting portion 12, on which a first mounting hole 121 is provided. The first mounting hole 121 is used to cooperate with a fastener to fix the first mounting portion 12 to the door body of the opening and closing device. For example, the first hinge seat 10 can be connected to the side wall of the door body through the first mounting portion 12 and rotate with the door body. When the door body and the main body of the opening and closing device are closed, the first hinge portion 11 and the second hinge portion 21 can be regarded as being on the same plane.

[0071] For example, there can be multiple first mounting holes 121 and second mounting holes 221. For instance, there can be three first mounting holes 121 and two second mounting holes 221. The number, shape, and size of the first mounting holes 121 and second mounting holes 221 can be set according to actual usage requirements.

[0072] Reference Figure 4a and Figure 4b As shown, in one disclosed embodiment, the first hinge seat 10 further includes a first mounting portion 12, which is integrally formed with the first hinge portion 11, and the second mounting portion 22 and the second hinge portion 21 are integrally formed. Exemplarily, the first hinge portion 11 and the first mounting portion 12 can be injection molded into an integral structure, and the second hinge portion 21 and the second mounting portion 22 can be injection molded into an integral structure.

[0073] Reference Figure 4aAs shown, in one disclosed embodiment, the first hinge seat 10 further includes a first mounting portion 12, on which a first reinforcing rib 13 is provided, and a second reinforcing rib 23 is provided on the second mounting portion 22. Exemplarily, the second mounting portion 22 is provided with the second reinforcing rib 23, which is located on the side of the second mounting portion 22 that is in contact with the side wall of the mounting cavity. There can be multiple second reinforcing ribs 23, and they can be arranged in a regularly intersecting pattern, forming a rhomboid or square grid. The specific shape and number of the second reinforcing ribs 23 are not limited here. The back surface of the second reinforcing rib 23 is flat, and the second reinforcing rib 23 at least partially overlaps the second hinge portion 21. There can be multiple first reinforcing ribs 13, which can be arranged in a regularly intersecting pattern. In this disclosed embodiment, the reinforcing ribs on the first mounting portion 12 and the second mounting portion 22 enhance the structural strength of the first mounting portion 12 and the second mounting portion 22.

[0074] Reference Figures 2a-2b , Figures 4a-4b As shown, in one disclosed embodiment, the hinge device further includes a second limiting structure 30. The second limiting structure 30 includes a first limiting protrusion 31 and a first limiting groove 32. The first limiting protrusion 31 is disposed on the side of the first mounting portion 12 near the second hinge portion 21, and the first limiting groove 32 is disposed on the side of the second mounting portion 22 near the first hinge portion 11. The first limiting protrusion 31 and the first limiting groove 32 cooperate to limit the maximum opening and closing angle of the door body of the opening and closing device.

[0075] The first limiting protrusion 31 is a block structure rather than a strip structure. This ensures that the hinge mechanism does not fail within a certain range of opening force, while exceeding that range allows it to fail but not break. For example, if the design requires the hinge mechanism to remain in place when the door is pushed with a force of 0-80N, the first limiting protrusion 31 and the first limiting groove 32 are used to achieve this limitation. If the design requires the hinge to fail when the door is pushed with a force exceeding 80N, but not break, the first limiting protrusion will break at approximately 80N. This prevents the hinge from breaking when the door is pushed with greater force, instead causing the hinge mechanism to over-rotate and fail.

[0076] Reference Figure 1b , Figure 2a , Figure 4bAs shown, in one disclosed embodiment, the hinge device further includes a piston 40, an elastic element 50, and a connecting shaft 60. The first hinge portion 11 has a first mating structure 113, and the second hinge portion 21 is provided with a second receiving cavity 211 and a second opening 212. The piston 40 is disposed within the second receiving cavity 211, and the piston 40 has a second mating structure 41. The second mating structure 41 abuts against the first mating structure 113 through the second opening 212, and the first hinge seat 10 and the second hinge seat 20 are capable of reciprocating relative to each other in the abutting state. The elastic element 50 is disposed within the second receiving cavity 211 and located at the end of the piston 40 opposite to the second mating structure 41. The elastic element 50 provides assistance in the abutting state. The connecting shaft 60 passes through the first hinge portion 11, the piston 40, the elastic element 50, and the second hinge portion 21, so that the first hinge portion 11 and the second hinge portion 21 are fixed relative to each other axially.

[0077] Reference Figure 1b , Figure 2a , Figure 4b As shown, exemplarily, the first hinge portion 11 is provided with a first receiving cavity 111, the first receiving cavity 111 is provided with a first opening 112, the first opening 112 is opposite to and communicates with the second opening 212, and a first mating structure is provided in the first receiving cavity 111. One end of the first hinge portion 11 with the first opening 112 is connected to one end of the second hinge portion 21 with the second opening 212.

[0078] The hinge device of this embodiment, because the elastic element 50 can provide assistance in the abutment state, can alleviate the problem of violent collision between the door and the housing caused by the rapid descent of the door during the closing process, thus improving the user experience. Meanwhile, the piston 40 and the elastic element 50 are both disposed within the second receiving cavity 211 of the second hinge seat 20. Furthermore, the first hinge seat 10, the second hinge seat 20, the piston 40, and the elastic element 50 can be assembled and connected via the connecting shaft 60, making the hinge device simple, easy to assemble, and reducing the space occupied by the hinge device.

[0079] Reference Figure 4b and Figure 5a As shown, a first limiting structure 80 is provided between the abutting surfaces of the first mating structure 113 and the second mating structure 41. The first limiting structure 80 includes a first limiting part 81 located on the first mating structure 113 and a second limiting part 82 located on the second mating structure 41. When the hinge device is in the initial state, the first limiting part 81 and the second limiting part 82 are engaged in a limiting fit.

[0080] For example, when the hinge device is in its initial state, the first limiting part 81 and the second limiting part 82 engage to position the hinge device in its initial state, preventing changes in the initial state due to transportation or other external forces. For instance, when the angle between the first hinge seat 10 and the second hinge seat 20 is less than 180°, the first limiting part 81 and the second limiting part 82 engage. For example, if the angle between the first hinge seat and the second hinge seat is 175°, the first limiting part 81 and the second limiting part 82 engage. When the hinge device is actually assembled on the housing of the opening and closing device, the angle between the first hinge seat and the second hinge seat is greater than 180° during normal use. During normal use, the first limiting part 81 and the second limiting part 82 are in a misaligned state, thus rendering the first limiting part 81 and the second limiting part 82 almost ineffective, thereby avoiding affecting the normal use of the hinge device.

[0081] The hinge device of this embodiment achieves initial positioning by providing a first limiting structure 80 between the abutting surfaces of the first mating structure 113 and the second mating structure 41. This avoids the protrusion falling off and reducing the structural strength of the second hinge seat. Moreover, the first limiting structure 80 is hidden between the abutting surfaces of the first mating structure 113 and the second mating structure 41, thus avoiding affecting the overall neatness and aesthetics of the hinge device.

[0082] Reference Figure 5a As shown, in one disclosed embodiment, the second mating structure 41 includes a first helical surface 42 and a first top surface 43, and the first mating structure 113 includes a first mating surface 114 and a second top surface 115. One end of the first top surface 43 is connected to the top end of the first helical surface 42. The first helical surface 42 and the first mating surface 114 mate with each other, and the first top surface 115 and the second top surface 115 correspond to each other. A first limiting part 81 is disposed on the second top surface 115, and a second limiting part 82 is disposed on the first top surface 43. When the hinge device is in the open state, the first helical surface 42 and the first mating surface 114 abut against each other.

[0083] In this embodiment of the hinge mechanism, the first helical surface 42 is used to support the door body to achieve a balanced state when the door is opened, so that the door body can achieve a hovering effect. The first top surface 43 is provided with a second limiting part 82, and the second top surface 115 is provided with a first limiting part 81. The first top surface 43 and the second top surface 115 cooperate to limit the relative position of the first hinge seat 10 and the second hinge seat 20 before the hinge device is installed and used, so as to prevent the hinge device from accidentally opening during storage and transportation.

[0084] Reference Figure 4b and Figure 5aAs shown, exemplarily, the first limiting part 81 is a protrusion, and the second limiting part 82 is a recess that matches the protrusion. Alternatively, the first limiting part 81 is a recess, and the second limiting part 82 is a protrusion that matches the recess. It should be noted that the specific shape and size of the protrusion and the recess are not limited here, as long as they can satisfy the initial state of the limiting and engaging hinge mechanism.

[0085] For example, the recessed portion has a roughly circular cross-sectional shape, and the protruding portion also has a roughly circular cross-sectional shape. The diameter of the recessed portion is greater than or equal to the diameter of the protruding portion. This arrangement allows the protruding portion to be more easily inserted into the recessed portion, making piston assembly easier, more forgiving, and more effective.

[0086] Reference Figure 2a and 5b As shown, in one disclosed embodiment, the sidewall of the piston 40 is provided with an axially extending guide groove 44, and the sidewall of the second receiving cavity 211 is provided with a corresponding guide protrusion 213. The guide protrusion 213 is disposed within the guide groove 44. When the opening and closing device is at the maximum opening angle, the guide protrusion 213 abuts against the limiting protrusion 115, which can help limit the maximum opening angle.

[0087] In one disclosed embodiment, the hinge device further includes fasteners connected to both ends of the connecting shaft 60 to fix the first hinge seat 10 and the second hinge seat 20 axially relative to each other.

[0088] Reference Figure 1b As shown, in one disclosed embodiment, the hinge device further includes a washer 70, the washer 70 having a non-circular hole 71 at its center, and the end of the connecting shaft 60 passing through the non-circular hole 71 and riveted to the washer 70.

[0089] Reference Figure 1b As shown, exemplarily, the washer 70 has a polygonal hole at its center, and the end of the connecting shaft 60 passes through the polygonal hole and is riveted to the washer. For example, the polygonal hole of the washer 70 is a regular hexagon. This arrangement ensures that the washer 70 and the connecting shaft 60 are relatively fixed when riveted, serving as a limiting function and preventing damage. Because the continuous friction caused by the relative rotation of the connecting shaft 60 and the washer 70 may cause strength problems, such as wearing down the riveted part, thereby affecting the strength of the hinge device, the present disclosure embodiment uses a polygonal hole instead of a circular hole to avoid damage.

[0090] Reference Figure 5bAs shown, in one disclosed embodiment, the piston 40 is provided with weight-reducing holes 45. The number of weight-reducing holes 45 can be one or more, and the multiple weight-reducing holes 45 are arranged circumferentially at intervals based on the central axis of the piston 40 itself. This arrangement can reduce the weight of the piston 40 and the hinge device, and avoid injection molding defects that occur when the piston 40 is solidly injection molded.

[0091] Reference Figure 5b As shown, in one disclosed embodiment, a first positioning protrusion 46 is provided at the bottom end of the piston 40 along the center, and the first positioning protrusion 46 is used to position the elastic member 50. A second positioning protrusion 214 is provided at the bottom end of the second receiving cavity 211 along the center, and the second positioning protrusion 214 is used to position the elastic member 50.

[0092] The hinge device of this embodiment uses the first positioning protrusion 46 and the second positioning protrusion 214 to position the elastic member 50, which can prevent the elastic member 50 from shaking and reduce the wear of the elastic member 50. Moreover, when the bottom end of the second hinge seat 20 is provided with a countersunk hole corresponding to the fastener at the end of the connecting shaft, the second positioning protrusion 214 can also improve the structural strength of the second hinge seat 20.

[0093] Reference Figure 1b As shown, this disclosure also provides an opening and closing device, which includes a device body 200 and a door body. The body is closably connected to the third opening of the device body 200 via a hinge device 100. The opening and closing device of this disclosure significantly strengthens the overall strength of the hinge device by providing reinforcing rings at the ends of the first and second hinge joints, thus improving the problem of easy cracking at the connection ends of related technology's spun hinge devices, increasing the service life of the hinge device, and enhancing the reliability of the opening and closing device.

[0094] Reference Figure 1b , Figure 3a as well as Figure 3b As shown, exemplarily, the device body 200 is provided with a third opening, and the outer wall of the device body 200 is provided with a mounting cavity 201 recessed into the device body. The mounting cavity 201 is provided with a fourth opening 202 facing outward of the device body 200. The door is closably connected to the third opening of the device body 200 by a hinge device 100 as described in any of the embodiments of this disclosure. The first hinge seat 10 is connected to the side wall of the door, the second hinge portion 21 is at least partially located in the mounting cavity 201, and the second mounting portion 22 is installed and embedded in the mounting cavity 201. In the embodiments of this disclosure, by further embedding the second mounting portion 22 in the mounting cavity 201 of the opening and closing device body 200, the mounting cavity 201 can further limit the second mounting portion 22, so that the hinge device does not tilt backward after being subjected to force, achieving an anti-tilting effect, improving the stability and reliability of the hinge device, and preventing the hinge device from loosening after long-term use.

[0095] For example, the second mounting part 22 is fixedly connected to the device body 200 by fasteners passing through the second mounting hole 221, thus ensuring the stability of the connection between the second hinge seat 20 and the opening and closing device body. For example, the second mounting part 22 can also be fixedly connected to the device body 200 by a spring-loaded structure 90. This allows the user to freely switch between screw fixing and screwless fixing. For example, for opening and closing devices with a heavy door body, such as those using glass doors, a screwless fixing method may not provide sufficient stability; therefore, screw fixing or a combination of screws and a spring-loaded structure can be used to enhance stability. For lighter door bodies, a screwless solution can be used to further reduce costs and improve production efficiency.

[0096] For example, the opening and closing device can be a freezer, such as a top-opening horizontal freezer, or other opening and closing devices, such as a dishwasher or a storage cabinet.

[0097] Exemplarily, the mounting cavity 201 includes a first cavity and a second cavity, which are respectively connected to the outer side wall of the device body. The first cavity and the second cavity are arranged and connected along the axis of the hinge device. The first hinge portion 11 is mounted through the first cavity, with a portion of the first hinge portion 11 located within the first cavity and a portion of the first hinge portion 11 extending outside the first cavity. The second mounting portion 22 is located within the second cavity, and the second hinge portion 21 is at least partially located within the second cavity.

[0098] In one disclosed embodiment, the mounting cavity 201 includes a first part and a second part, the second part being located at the lower end of the first part, the second hinge portion 21 being at least partially located within the first part, and the second mounting portion 22 being snapped into the second part.

[0099] Reference Figure 3b As shown, in one disclosed embodiment, a protruding edge portion 203 is provided on the periphery of the fourth opening 202. The edge portion 203 and the second portion together form a slot. The slot is located on the side of the mounting cavity 201 away from the fourth opening 202, and the second mounting portion 22 is embedded in the slot. The edge portion 203 is located within the second portion, and the edge portion 203 and the second portion together define the slot, and the second mounting portion 22 is securely mounted by the slot.

[0100] Reference Figure 3b As shown, in one embodiment, the device body 200 includes a frame portion 200a, the frame portion 200a is provided with a mounting cavity 201, the frame portion 200a located at the bottom of the mounting cavity 201 is provided with a second clearance portion 204, and the second clearance portion 204 is provided near the front sidewall 2011.

[0101] For example, the mouth frame portion 200a can be detachably mounted on the device body 200, or the mouth frame portion 200a can be integrally formed with the device body. The mouth frame portion 200a is provided with a mounting cavity 201, which can cooperate with the second mounting portion 22, that is, the second mounting portion 22 can be installed and embedded in the mounting cavity 201.

[0102] In one embodiment, there are two spring-loaded structures 90, spaced apart and positioned at the front of the second mounting portion 22 near the front sidewall. The free ends 91 of the spring-loaded structures 90 are wedge-shaped. The front sidewall 2011 of the mounting cavity 201 includes a first wall near the bottom and a second wall above the first wall. The second wall is located at the fourth opening 202. A first snap-fit ​​groove is provided on the second wall, and the free ends 91 of the elastic structures 90 are fitted into the first snap-fit ​​groove to secure the second mounting portion 22.

[0103] For example, when the second mounting part 22 is inserted along the mounting cavity 201, the free end 91 of the spring sheet structure 90 is subjected to pressure from the front side wall 2011 of the mounting cavity 201, thereby elastically contracting into the concave groove. When the second mounting part 22 is inserted into place, that is, when the spring sheet structure 90 is in place in the first locking groove, the free end 91 of the spring sheet structure 90 recovers its elastic deformation and locks into the first locking groove, thereby fixing the second mounting part 22 and the mounting cavity.

[0104] For example, the spring structure 90 is disposed on the side of the second mounting part 22, and a second snap-fit ​​groove is provided on the inner side wall of the mounting cavity 201. The elastic structure 90 is adapted to the second snap-fit ​​groove to fix the second mounting part 22.

[0105] The above detailed description is a specific description of a feasible embodiment of the present utility model. This embodiment is not intended to limit the protection scope of the present utility model. All equivalent implementations or modifications that do not depart from the present utility model should be included in the protection scope of the present utility model.

Claims

1. A hinge device, characterized by include The first hinge seat includes a first hinge portion; The second hinge seat includes a second hinge portion, which is rotatably connected to the first hinge portion, and one end of the first hinge portion and the second hinge portion are mated together. The material of the first hinge portion and the second hinge portion is plastic. A reinforcing ring is clamped at the end of the first hinge portion and the second hinge portion, and the reinforcing ring is made of metal.

2. The hinge apparatus according to claim 1, characterized by One end of the first hinge portion is provided with a stepped opening, and one end of the second hinge portion is provided with an end shaft portion that mates with the stepped opening. The diameter of the end shaft portion is smaller than the diameter of the second hinge portion. The end shaft portion is inserted into the stepped opening, and the reinforcing ring is clamped between the outer end face of the stepped opening and the end of the second hinge portion.

3. The hinge apparatus according to claim 2, characterized by The reinforcing ring can be detachably sleeved on the end shaft portion, or the reinforcing ring can be integrally formed with the end shaft portion.

4. The hinged device of claim 1, wherein The second hinge seat further includes a second mounting portion, which is used to be installed in the mounting cavity of the opening and closing device body. The mounting cavity includes a front sidewall and inner sidewalls located on both sides of the front sidewall. A spring sheet structure is provided on the front side of the second mounting portion near the front sidewall, and / or a spring sheet structure is provided on the side of the second mounting portion near the inner sidewall. The spring sheet structure includes a fixed end and a free end. The fixed end is connected to the second mounting portion, and the free end is at least partially protruding from the front or side. The free end can elastically extend and retract relative to the fixed end to move closer to or away from the front or side.

5. The hinge apparatus according to claim 4, characterized by The second mounting part is provided with a first clearance part at the bottom position near the front sidewall, and the front sidewall is provided with a first mating part adapted to the first clearance part; or, the second mounting part is provided with a second mounting hole, which is used to cooperate with a fastener to fix the second mounting part to the main body of the opening and closing device.

6. The hinge apparatus according to claim 5, characterized by The second mounting hole includes a first sub-hole and a second sub-hole. The diameter of the first sub-hole is larger than the diameter of the second sub-hole. The second sub-hole is located away from the front relative to the first sub-hole. And / or, the side of the second mounting part is provided with a through area that communicates with the first sub-hole. The fixed end is connected to the through area. The free end protrudes from the side and can extend and retract relative to the fixed end to approach or move away from the through area.

7. The hinge apparatus according to claim 4, characterized by The thickness of the second mounting portion is less than the diameter of the second hinge portion, and the step difference between the back surface of the second mounting portion and the back surface of the second hinge portion is less than or equal to a preset value. The back surface of the second mounting portion is planar and fits against the inner wall of the mounting cavity. Alternatively, the thickness of the second mounting portion gradually increases from the end of the second mounting portion away from the second hinge portion to the end of the second mounting portion closer to the second hinge portion. Or, the second mounting portion further includes a front surface, which is disposed opposite to the back surface of the second mounting portion, and the front surface and the back surface of the second mounting portion form an angle, wherein the angle is an acute angle.

8. The hinge apparatus according to claim 4, characterized by The first hinge seat also includes a first mounting part. When the opening and closing device is in the closed state, the second mounting part is disposed on the side of the second hinge part near the back of the mounting cavity, and the first mounting part is disposed on the side of the first hinge part away from the back of the mounting cavity.

9. The hinge apparatus according to claim 4, characterized by The first hinge seat further includes a first mounting portion, which has a first mounting hole for engaging with a fastener to fix the first mounting portion to the door body of the opening and closing device; and / or, The first hinge seat further includes a first mounting portion, which is integrally formed with the first hinge portion; the second mounting portion and the second hinge portion are integrally formed; and / or, The first hinge seat further includes a first mounting part, on which a first reinforcing rib is provided, and on which a second mounting part is provided a second reinforcing rib.

10. The hinged device of claim 9, wherein, The hinge device further includes a second limiting structure, which includes a first limiting protrusion and a first limiting groove. The first limiting protrusion is disposed on the side of the first mounting part near the second hinge part, and the first limiting groove is disposed on the side of the second mounting part near the first hinge part. When the door of the opening and closing device is at its maximum opening and closing angle, the limiting protrusion is at least partially engaged and pressed into the limiting groove.

11. The hinging device according to any one of claims 1 to 10, characterized in that The hinge device also includes: The piston has a first hinge portion having a first mating structure, and a second hinge portion having a second receiving cavity and a second opening. The piston is disposed in the second receiving cavity and has a second mating structure. The second mating structure abuts against the first mating structure through the second opening. An elastic element is disposed within the second receiving cavity and located at one end of the piston away from the second mating structure; the elastic element can provide assistance for the abutting state. A connecting shaft passes through the first hinge portion, the piston, the elastic element, and the second hinge portion, so that the first hinge portion and the second hinge portion are fixed relative to each other along the axial direction.

12. The hinged device of claim 11, wherein, A first limiting structure is provided between the contact surfaces of the first mating structure and the second mating structure. The first limiting structure includes a first limiting part located on the first mating structure and a second limiting part located on the second mating structure. When the hinge device is in the initial state, the first limiting part and the second limiting part are engaged in a limiting fit.

13. The hinge apparatus of claim 12, wherein, The second mating structure includes a first spiral surface and a first top surface. The first mating structure includes a first mating surface and a second top surface. One end of the first top surface is connected to the top end of the first spiral surface. The first spiral surface and the first mating surface mate with each other. The first top surface and the second top surface correspond to each other. The first limiting part is disposed on the second top surface, and the second limiting part is disposed on the first top surface. When the hinge device is in the open state, the first spiral surface and the first mating surface abut against each other.

14. The hinged device of claim 12, wherein, The first limiting part is a protrusion, and the second limiting part is a recess that matches the protrusion, or the first limiting part is a recess and the second limiting part is a protrusion that matches the recess; the diameter of the recess is greater than or equal to the diameter of the protrusion.

15. The hinge device according to claim 11, characterized in that, The piston has an axially extending guide groove on its sidewall, and the second receiving cavity has a corresponding guide protrusion on its sidewall, the guide protrusion being disposed within the guide groove; and / or, The hinge device further includes fasteners connected to both ends of the connecting shaft to fix the first hinge seat and the second hinge seat axially relative to each other; and / or, The hinge device further includes a washer having a non-circular hole at its center, the end of the connecting shaft passing through the non-circular hole and riveted to the washer; or, the washer having a polygonal hole at its center, the end of the connecting shaft passing through the polygonal hole and riveted to the washer; and / or, The piston is provided with a weight-reducing hole; and / or, The piston has a first positioning protrusion at its bottom center, which is used to position the elastic element; and / or, The bottom end of the second receiving cavity is provided with a second positioning protrusion along the center, and the second positioning protrusion is used to position the elastic member.

16. An opening and closing device characterized by comprising: The opening and closing device includes: Main body of the device; A door body, which is closably connected to the device body by a hinge device as described in any one of claims 1 to 15.

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