A semi-embedded balance hinge and a device with a door body

Abstract

This solution provides a semi-embedded balance hinge, including: a housing installed on the device body, a pair of rocker arms installed on the door body, a hinge mounting shell foamed in the device body, a decorative cover buckled on the housing, and a buckle cover buckled on the rocker arms. There is a rotating shaft in the housing, and the rotating shaft includes a first helical surface and a polygonal boss connecting the rocker arm; there is a slider in the housing, and the slider is provided with a second helical surface that cooperates with the first helical surface; there is a compression spring in the housing that presses the slider against the rotating shaft, and a flat washer is installed between the spring and the slider. By setting a receiving cavity for the housing on the device body, the main part of the semi-embedded balance hinge is pre-buried on the device body, and only the rocker arms are exposed outside the door body, so that most of the hinge can be embedded in the device, with a small part exposed on the outer surface of the device and a small protruding dimension. This solution also provides a device with a door body having the above-mentioned semi-embedded balance hinge.

Description

Technical Field

[0001] The present invention belongs to the technical field of hinges, and particularly relates to a semi-embedded balance hinge and a device with a door body. Background Art

[0002] For a device in which a door body swings up and down through a hinge to open and close, the functions of the hinge are: ① connecting the door body and the cabinet body; ② providing a rotation axis for the up and down swing of the door body; ③ balancing the weight of the door body so that the door body can stay within a specific opening angle range.

[0003] However, the traditional balance hinge has the following disadvantages: ① It occupies a large space. The hinge protrudes from the outer surfaces of the cabinet body and the door body, occupying a certain space during placement, storage, and transportation; ② It is prone to abnormal noises. Since almost all the components of the hinge are steel parts, it is easy to generate abnormal noises due to friction; ③ The hinge components have many processing procedures, complex processes, and high processing costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a semi-embedded balance hinge, in which most of the hinge is embedded in the device, and a part of it is exposed outside the device surface, with a small protruding dimension. Another purpose of the present invention is to provide a device with a door body having the above semi-embedded balance hinge.

[0005] To solve the above technical problems, the present invention provides a semi-embedded balance hinge, which includes a housing and a rotating shaft mechanism;

[0006] Wherein, a receiving cavity for receiving the housing is provided on the device body, the housing is placed in the receiving cavity, the housing is a hollow cylinder with an inner cavity, and the rotating shaft mechanism is placed in the inner cavity of the housing and is connected to the door body at both ends;

[0007] The rotating shaft mechanism includes a main rocker arm, a rotating shaft, a slider, a compression spring, a circular boss, and an auxiliary rocker arm arranged in sequence;

[0008] The outer end of the rotating shaft is connected to the door body through the main rocker arm, the outer end of the circular boss is connected to the door body through the auxiliary rocker arm, the inner end of the rotating shaft and the outer end of the slider are respectively provided with a first helical surface and a second helical surface that cooperate with each other, and the compression spring is used to provide a spring force for the slider to move towards the rotating shaft;

[0009] After assembly, the rotating shaft can rotate around the axis, and the slider can slide linearly along the axis.

[0010] Preferably, in the above semi-embedded balance hinge, when the door body is in the closed state, the heads of the first helical surface on the rotating shaft and the second helical surface on the slider are both radial end faces and are in contact with each other, and the spring force of the compression spring is F1; when the door body is in the maximum opening angle state, the bottom of the first helical surface meshes and locks with the bottom of the second helical surface, and the spring force of the compression spring is F2, where F2 > F1 > 0, and the torque generated by the semi-embedded balance hinge is greater than the torque generated by the self-weight of the door body.

[0011] Preferably, in the above semi-embedded balance hinge, guiding ribs for guiding the slider and the rotating shaft are provided on the inner cavity wall of the housing. Grooves that are slidably engaged with the guiding ribs are provided on both the slider and the rotating shaft, and a vacant section for the rotating shaft to rotate around its axis is provided near the end of the guiding rib.

[0012] Preferably, in the above semi-embedded balance hinge, the outer end of the rotating shaft is a polygonal boss, a polygonal inner hole for mating and connecting with the polygonal boss is provided on the main rocker arm, the outer end of the circular boss is a cylinder, and a round hole for mating and connecting with the cylinder is provided on the auxiliary rocker arm.

[0013] Preferably, in the above semi-embedded balance hinge, anti-misalignment ribs are provided on the polygonal boss of the rotating shaft, and corresponding grooves are provided on the main rocker arm.

[0014] Preferably, in the above semi-embedded balance hinge, a flat washer is provided between the slider and the compression spring.

[0015] Preferably, in the above semi-embedded balance hinge, positioning holes are provided at the relative positions of the housing and the rotating shaft, and the two are positioned by a pin during pre-assembly.

[0016] Preferably, in the above semi-embedded balance hinge, it further includes a decorative cover detachably covering the housing and a buckle cover detachably covering the main rocker arm and the auxiliary rocker arm.

[0017] Preferably, in the above semi-embedded balance hinge, it further includes a hinge mounting shell provided on the inner wall of the device body for covering the housing.

[0018] Preferably, in the above semi-embedded balance hinge, the hinge mounting shell and the gaps between the hinge mounting shell and the inner wall of the device body are wrapped and sealed with foaming material.

[0019] Preferably, in the above semi-embedded balance hinge, a plurality of convex blocks are provided on the housing, and grooves that are snap-fitted with the convex blocks are provided on the hinge mounting shell.

[0020] Preferably, in the above semi-embedded balance hinge, an earpiece with a round hole is provided on the lower side of the housing, and a screw mounting hole matching the round hole of the earpiece is provided on the hinge mounting shell.

[0021] Preferably, in the above semi-embedded balance hinge, a hanging platform for hooking the earpiece is provided on the lower side of the decorative cover, and a buckle for clamping the convex block is provided on the upper side of the decorative cover.

[0022] This solution provides a device with a door body, including a semi-embedded balance hinge, and the semi-embedded balance hinge is the above-mentioned semi-embedded balance hinge.

[0023] A semi-embedded balance hinge provided by this solution includes a housing and a rotating shaft mechanism. Among them, a receiving cavity for accommodating the housing is provided on the device body, the housing is placed in the receiving cavity, the housing is a hollow cylinder with an inner cavity, and the rotating shaft mechanism is placed in the inner cavity of the housing and is connected to the door body at both ends; the rotating shaft mechanism includes a main rocker arm, a rotating shaft, a slider, a compression spring, a circular convex platform and an auxiliary rocker arm arranged in sequence; the outer end of the rotating shaft is connected to the door body through the main rocker arm, and the outer end of the circular convex platform is connected to the door body through the auxiliary rocker arm. The inner end of the rotating shaft and the outer end of the slider are respectively provided with a matching first helical surface and a second helical surface, and the compression spring is used to provide a spring force for the slider to move towards the rotating shaft; after assembly, the rotating shaft can rotate around the axis, and the slider can slide linearly along the axis. The semi-embedded balance hinge provided by this solution, by providing a receiving cavity for accommodating the housing on the device body, embeds the main part of the semi-embedded balance hinge, that is, the housing and the rotating shaft mechanism except the rocker arm, into the device body. Only the main rocker arm and the auxiliary rocker arm are exposed outside the door body, which can achieve that most of the hinge is embedded in the device, and a small part is exposed outside the surface of the device, with a small protruding dimension. At the same time, the semi-embedded balance hinge can be installed on the device without changing the structure of the door body. This solution also provides a device with a door body having the above semi-embedded balance hinge. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0025] Figure 1 It is a structural assembly drawing of a hinge mechanism provided on a device with a door body in the prior art;

[0026] Figure 2 It is a structural assembly drawing of a semi-embedded balance hinge provided on the device with a door body provided by this solution;

[0027] Figure 3 Side view of Figure 2 ;

[0028] Figure 4 Exploded perspective view of the semi - embedded balance hinge provided by this solution;

[0029] Figure 5 Stereogram of the semi - embedded balance hinge provided by this solution assembled into a finished product, front view of the finished product;

[0030] Figure 6 Stereogram of the semi - embedded balance hinge provided by this solution assembled into a finished product, back view of the finished product;

[0031] Figure 7 Structural schematic diagram of the main body part of the semi - embedded balance hinge provided by this solution.

[0032] In the above figures:

[0033] Traditional device with a door body: Device body 01 with a door body; Door body 02; Hinge mechanism 03;

[0034] Device with a door body of this solution: Device body 1 with a door body; Door body 2; Semi - embedded balance hinge 4; Housing 5; Rotating shaft 6; Slide block 7; Flat washer 8; Compression spring 9; Hinge mounting shell 10;

[0035] Main rocker arm 11; Auxiliary rocker arm 12; Screw 13; Cover 14; Decorative cover 15; Cover 16; Plug 17; Housing positioning hole 18; Rotating shaft positioning hole 19; Polygonal boss 20; Polygonal inner hole 21; Snap - fastener 22; Hanging platform 23; Lobe 25; Round hole 26; Boss 27; Protrusion 28; Groove 29; Screw mounting hole 30; First helical surface 31, Second helical surface 32; Circular boss 33. Detailed implementation mode

[0036] The core of the present invention is to provide a semi - embedded balance hinge, most of which is embedded in the device, with a small part protruding from the outer surface of the device and a small protruding dimension. Another object of the present invention is to provide a device with a door body having the above - mentioned semi - embedded balance hinge.

[0037] In order to enable those skilled in the art to better understand the technical solutions provided by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] Please refer to Figures 2 - 7 , a semi - embedded balance hinge provided by the present invention includes a housing 5 and a rotating shaft mechanism.

[0039] Among them, a receiving cavity for receiving the housing 5 is provided on the device body 1. The housing 5 is placed in the receiving cavity. The housing 5 is a hollow cylinder with an inner cavity. The rotating shaft mechanism is placed in the inner cavity of the housing 5 and is connected to the door body 2 at both ends.

[0040] The rotating shaft mechanism includes a main rocker arm 11, a rotating shaft 6, a slider 7, a compression spring 9, a circular boss 33, and an auxiliary rocker arm 12 arranged in sequence. The rotating shaft 6, the slider 7, the compression spring 9, and the circular boss 33 are abutted end to end in sequence.

[0041] The outer end of the rotating shaft 6 is connected to the door body 2 through the main rocker arm 11. The outer end of the circular boss 33 is connected to the door body 2 through the auxiliary rocker arm 12. A first helical surface 31 and a second helical surface 32 that cooperate with each other are respectively provided at the inner end of the rotating shaft 6 and the outer end of the slider 7. The compression spring 9 is used to provide a spring force for the slider 7 to move towards the rotating shaft 6.

[0042] After assembly, the rotating shaft 6 can rotate around the axis, and the slider 7 can slide linearly along the axis.

[0043] For the semi-embedded balance hinge provided by this solution, by providing a receiving cavity for receiving the housing 5 on the device body 1, the main part of the semi-embedded balance hinge, that is, the housing and the rotating shaft mechanism except the rocker arm, are all embedded in the device body. Only the main rocker arm 11 and the auxiliary rocker arm 12 are exposed outside the door body 2, so that most of the hinge can be embedded in the device, and only a small part is exposed outside the device surface, with a small protruding dimension. At the same time, without changing the structure of the door body, the semi-embedded balance hinge can be installed on the device. The semi-embedded balance hinge 4 can keep the door body balanced, while occupying a small space and not increasing the external dimension of the device or equipment with a door body, ensuring the beautiful appearance of the device with a door body.

[0044] Specifically, as Figure 4 shown, there are three convex blocks with the first helical surface 31 evenly distributed along the circumference on the rotating shaft 6, and there are also corresponding numbers of convex blocks with the second helical surface 32 on the slider 7. The axial elastic force provided by the compression spring 9 is transmitted to the first helical surface of the rotating shaft 6 through the second helical surface on the slider 7. The tangential component force decomposed by the axial force at the helical surface generates a moment on the rotating shaft. This moment is equal in magnitude and opposite in direction to the moment applied to the rotating shaft by the weight of the door body, so that the door body 2 is balanced and stays within a certain angle range.

[0045] Preferably, when the door body 2 is in the closed state, the heads of the first helical surface 31 on the rotating shaft 6 and the heads of the second helical surface 32 on the slider 7 are both radial end faces and are in mutual contact. The spring force of the compression spring 9 is F1. When the door body 2 is in the maximum opening angle state, the bottom of the first helical surface 31 is engaged and locked with the bottom of the second helical surface 32. The spring force of the compression spring 9 is F2, and F2 > F1 > 0. The moment generated by the semi-embedded balance hinge 4 is greater than the moment generated by the self-weight of the door body 2.

[0046] It should be noted that when the door body 2 is in the closed state, the heads of the first helical surface 31 on the rotating shaft 6 and the second helical surface 32 on the slider 7 are radial end faces, so the rotating shaft 6 and the slider 7 can be kept in mutual contact. At this time, the two only receive the axial spring force F1 provided by the compression spring 9. At this time, the deformation amount of the compression spring 9 is the maximum deformation amount during the process of the door closing, opening, and reaching the maximum opening angle, that is, the spring force F1 is the maximum spring force during the above process, and the hinge does not provide the rotational torque during opening; during the opening process of the door body 2, the first helical surface 31 on the rotating shaft 6 and the second helical surface 32 on the slider 7 are in sliding fit, and the slider 7 gradually moves axially outward, and the deformation amount of the compression spring 7 gradually becomes smaller. Similarly, during the closing process of the door body 2, the first helical surface 31 on the rotating shaft 6 and the second helical surface 32 on the slider 7 are in sliding fit, and the slider 7 gradually moves axially inward, and the deformation amount of the compression spring 9 gradually becomes larger; when the door body 2 is in the state of the maximum opening angle, the first helical surface 31 on the rotating shaft 6 and the second helical surface 32 on the slider 7 are engaged and locked, the slider 7 no longer moves axially, and the deformation amount of the compression spring 9 no longer changes. At this time, the torque generated by the semi-embedded balance hinge 4 is greater than the torque generated by the self-weight of the door body 2, and the door body 2 can hover without moving. It should be noted that the torque of the door body 2 gradually decreases as the opening angle of the door increases.

[0047] During the opening / closing process of the door body, the door body 2 drives the rotating shaft 6 to rotate. At the same time, the slider 7 moves axially outward / inward due to the rotational movement. The compression spring 9 is always compressed. Within a specific opening angle range, the axial elastic force generated by the compression spring 9 generates a radial supporting force in the direction of the door opening after squeezing the helical surface, so as to overcome the gravity of the door during the process of opening and closing the door body, and the supporting force of the compression spring changes accordingly with the change of the opening and closing angle of the door.

[0048] By setting the semi-embedded balance hinge in the above solution, during the opening and closing process of the door body 2, the first helical surface 31 of the rotating shaft 6 and the second helical surface 32 on the slider 7 are matched, the compression spring 9 is compressed, the torque generated by the semi-embedded balance hinge 4 is greater than the torque generated by the self-weight of the door body 2, and the door body can hover without moving, so that the door body can maintain a stable balance state within a specific opening angle range.

[0049] In the specific implementation manner, guide ribs for guiding the slider 7 and the rotating shaft 6 are provided on the inner cavity wall of the housing 5. The function of the guide ribs is to guide the slider to prevent the slider from rotating. Grooves that are in sliding fit with the guide ribs are provided on both the slider 7 and the rotating shaft 6. A vacant section for the rotating shaft 6 to rotate around the axis is provided near the end of the guide rib. The guide rib can be one, or can be multiple guide ribs evenly arranged circumferentially along the inner cavity of the housing. The number of the grooves corresponds one by one to the number and position of the guide ribs.

[0050] Specifically, the inner cavity wall of the housing is sequentially provided with a first guiding rib for guiding the rotating shaft 6 and the slider 7 from the inside to the outside, a ring groove for axially positioning the rotating shaft 6, and a second guiding rib for guiding the slider 7. The first guiding rib and the second guiding rib are on the same extension line and have the same width and height dimensions; correspondingly, the rotating shaft 6 is sequentially provided with an annular groove for avoiding and mating with the first guiding rib and an opaque groove that is concavo-convexly mated with the ring groove along the direction from the outer end to the inner end.

[0051] It should be noted that the number, position, width, and height dimensions of the opaque groove are all designed to match the first guiding rib. An annular groove with the same width as the first guiding rib at the end of the inner cavity of the housing is provided on the outer cylindrical surface of the rotating shaft. After inserting the rotating shaft into the housing 5 along the first guiding rib and then rotating it by a certain angle along the spiral direction, the rotating shaft can be stuck in the housing and will not be pushed out by the compression spring 9, and it will not fall off within the rotation range of the door opening and closing. The first guiding rib on the inner wall of the housing plays a role in limiting and guiding the above-mentioned rotating shaft. The number of the first guiding ribs can be the same as the number of the second guiding ribs, and the first guiding ribs can be regarded as the ring groove dividing the first guiding ribs on the guiding rib; the number of the first guiding ribs can also be less than the number of the second guiding ribs, but no matter what the number is, each first guiding rib needs to ensure that it is on the same extension line as the second guiding rib.

[0052] In the specific implementation manner, the outer end of the rotating shaft 6 is a polygonal boss 20, and a polygonal inner hole 21 for mating and connecting with the polygonal boss 20 is provided on the main swing arm 11. The outer end of the circular boss 33 is a cylinder, and a circular hole 26 for mating and connecting with the cylinder is provided on the auxiliary swing arm 12. One end of the main swing arm 11 is provided with a polygonal boss 20 to be connected with the rotating shaft 6, and the other end is connected with the door body 2 through a fixing member. One end of the auxiliary swing arm 12 is provided with a circular hole 26 to be connected with the circular boss 33, and the other end is connected with the door body 2 through a fixing member. Since there will inevitably be a gap between the door body and the hinge during actual installation, in order to prevent shaking, torque is transmitted on the left side and auxiliary rotation is carried out on the right side to achieve the purpose of force balance.

[0053] Furthermore, in order to facilitate the correct connection and positioning of the rotating shaft 6 and the main swing arm 11, anti-misalignment ribs are provided on the polygonal boss 20 of the rotating shaft 6, and corresponding grooves are provided on the main swing arm 11. Only when the groove on the main swing arm 11 corresponds to the anti-misalignment rib on the rotating shaft 6 can the swing arm be sleeved on the polygonal boss of the rotating shaft.

[0054] Specifically, a flat washer 8 is provided between the slider 7 and the compression spring 9. The function of the flat washer is to prevent the compression spring 9 from causing wear to the plastic component during the process of opening and closing the door, and at the same time, it can also improve the bearing capacity of the plastic component.

[0055] In order to effectively locate and prevent shaking, positioning holes are provided at the relative positions of the housing 5 and the rotating shaft 6, and during pre-assembly, the two are positioned by pins. The assembled rotating shaft mechanism is positioned by pins to prevent loosening, and is pre-installed into the cabinet body. When installing the door body, the pins are pulled out to complete the subsequent hinge installation.

[0056] In the specific implementation manner, this solution further includes a decorative cover 15 detachably sleeved on the housing 5 and a cover detachably sleeved on the main rocker arm 11 and the auxiliary rocker arm 12. The detachable connection method is to provide snap fasteners on the decorative cover 15 and the cover. The hinge decorative cover is stuck on the housing and can be quickly disassembled and replaced.

[0057] Furthermore, this solution also includes a hinge installation shell 10 provided on the inner wall of the device body 1 for sleeving on the housing 5.

[0058] The hinge installation shell 10 and the gaps between the hinge installation shell 10 and the inner wall of the device body 1 are wrapped and sealed with foaming material. The hinge installation shell 10 is matched with the outer shape of the housing 5. When the cabinet body is foamed, the foaming material wraps the hinge installation shell 10 to achieve the purposes of heat insulation, sealing and fixed connection. The hinge installation shell 10 bears the torque generated during the opening and closing of the door body 2.

[0059] Specifically, a number of bumps 28 are provided on the housing 5, and grooves 29 that are clamped and matched with the bumps 28 are provided on the hinge installation shell 10.

[0060] An earpiece 25 with a round hole is provided on the lower side of the housing 5, and a screw installation hole 30 that is matched with the round hole of the earpiece 25 is provided on the hinge installation shell 10.

[0061] Furthermore, a hanging platform 23 for hooking the earpiece 25 is provided on the lower side of the decorative cover 15, and a snap fastener 22 for clamping the bump 28 is provided on the upper side of the decorative cover 15.

[0062] This solution provides a semi-embedded balance hinge, including: a housing installed on the device body, a pair of rocker arms installed on the door body, a hinge installation shell foamed in the device body, a decorative cover buckled on the housing, and a cover buckled on the rocker arms. There is a rotating shaft in the housing, and the rotating shaft includes a working part with a spiral surface and a polygonal boss connecting the rocker arm; there is a slider in the housing, and the slider has a spiral surface that is matched with the spiral surface of the rotating shaft; there is a compression spring in the housing that presses the slider against the rotating shaft, and a flat washer is installed between the spring and the slider.

[0063] The assembly process of the semi - embedded balance hinge 4 is as follows: Compress the spring 9, flat washer 8, slider 7, and rotary shaft 6 are sequentially installed into the housing 5. Rotate the rotary shaft 6 until the rotary shaft positioning hole 19 aligns with the housing positioning hole 18, and insert the pin 17 into the rotary shaft positioning hole 19 and the housing positioning hole 18. Then, put the main rocker arm 11 on the polygonal boss 20 of the rotary shaft 6, put the auxiliary rocker arm 12 on the circular boss 33 at the bottom of the housing 5. Next, insert the four bumps 28 on the housing 5 into the four grooves 29 inside the hinge mounting shell 10. Pass two screws 13 through the round holes on the two lugs 25 of the housing 5 and screw them into the two screw mounting holes 30 on the hinge mounting shell 10. Then, use the screws 13 to fasten the main rocker arm 11 and the auxiliary rocker arm 12 to the door body 2. Pull out the pin 17. Hook the two hanging platforms 23 on the lower side of the decorative cover 15 onto the two lugs 25 of the housing 5, and the two buckles 22 on the upper side of the decorative cover 15 catch the two bosses 27 on the housing 5. Finally, snap the cover 16 onto the main rocker arm 11, and snap the cover 14 onto the auxiliary rocker arm 12.

[0064] As Figure 2 and Figure 3 shown, compared with the traditional hinge 3 in Figure 1 , the semi - embedded balance hinge 4 only has a partial protrusion from the device body 1 and the door body 2, and the protrusion size is very small. Two semi - embedded balance hinges 4 are installed on the illustrated device body 1. In practical applications, the specific installation quantity of the semi - embedded balance hinge 4 is set according to the length of the door body 2, and at least one semi - embedded balance hinge 4 is installed.

[0065] In addition, the present application also discloses a device with a door body, including a semi - embedded balance hinge 4, a device body 1 with a door body, and a door body 2. After installing the semi - embedded balance hinge 4 on the device body 1 with a door body, the door body 2 opens and closes up and down around the rotating shaft mechanism. This semi - embedded balance hinge is the semi - embedded balance hinge disclosed in the above - mentioned embodiment. Therefore, the device with a door body having this semi - embedded balance hinge also has all the above - mentioned technical effects, which will not be elaborated one by one here.

[0066] Adopting the design of the semi - embedded balance hinge in this case reduces the overall external volume of the device with a door body. At the same time, it makes the speed of the door body closing more uniform and stable, avoids the disadvantages of the existing semi - embedded balance hinge such as unstable force and poor stability, and extends the service life of the hinge.

[0067] The device with a door body described in this article is a device with a door body that opens and closes up and down around the semi - embedded balance hinge on the device body with a door body. In practical applications, it can be any device or equipment with a door body that opens and closes up and down on a horizontal freezer, storage locker, or mechanical equipment, etc. Any device or equipment with a door body adopting the semi - embedded balance hinge in this article is within the protection scope of this solution.

[0068] In the description of this solution, it should be understood that the orientation or positional relationships indicated by terms such as "center", "axial direction", "circumferential direction", "upper", "lower", etc. are based on the Figure 7 orientation or positional relationship shown in the accompanying drawings. Taking the inner end towards the inner cavity of the housing 5 as the inner end and the outer end towards the outer cavity of the housing as the outer end, it is only for the convenience of describing this solution and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to this solution.

[0069] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this solution, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0070] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0071] Specific examples are used herein to elaborate on the principles and implementation manners of the present invention. The description of the above embodiments is only for helping to understand the method of the present invention and its core idea. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A semi-embedded balance hinge, characterized in that, It includes a housing (5) and a rotating shaft mechanism; Among them, a receiving cavity for receiving the housing (5) is provided on the device body (1). The housing (5) is placed in the receiving cavity. The housing (5) is a hollow cylinder with an inner cavity. The rotating shaft mechanism is placed in the inner cavity of the housing (5) and is connected to the door body (2) at both ends; The rotating shaft mechanism includes a main rocker arm (11), a rotating shaft (6), a slider (7), a compression spring (9), a circular boss (33), and an auxiliary rocker arm (12) arranged in sequence; The outer end of the rotating shaft (6) is connected to the door body (2) through the main rocker arm (11). The outer end of the circular boss (33) is connected to the door body (2) through the auxiliary rocker arm (12). A first helical surface (31) and a second helical surface (32) that cooperate with each other are respectively provided at the inner end of the rotating shaft (6) and the outer end of the slider (7). The compression spring (9) is used to provide a spring force for the slider (7) to move towards the rotating shaft (6); After assembly, the rotating shaft (6) can rotate around the axis, and the slider (7) can slide linearly along the axis; The outer end of the rotating shaft (6) is a polygonal boss (20). A polygonal inner hole (21) for mating connection with the polygonal boss (20) is provided on the main rocker arm (11). The outer end of the circular boss (33) is a cylinder. A circular hole (26) for mating connection with the cylinder is provided on the auxiliary rocker arm (12). One end of the main rocker arm (11) is connected to the rotating shaft (6) through the polygonal boss (20), and the other end is connected to the door body (2) through a fixing member; One end of the auxiliary rocker arm (12) is provided with the circular hole (26) to be connected to the circular boss (33), and the other end is connected to the door body (2) through a fixing member.

2. The semi-embedded balance hinge according to claim 1, characterized in that, When the door body (2) is in the closed state, the heads of the first helical surface (31) and the second helical surface (32) on the rotating shaft (6) are both radial end faces and abut against each other. The spring force of the compression spring (9) is F1; When the door body (2) is in the maximum opening angle state, the bottom of the first helical surface (31) is engaged and locked with the bottom of the second helical surface (32). The spring force of the compression spring (9) is F2, F2 > F1 > 0. The moment generated by the semi - embedded balance hinge (4) is greater than the moment generated by the self - weight of the door body (2).

3. The semi-embedded balance hinge according to claim 1, wherein Guide ribs for guiding the slider (7) and the rotating shaft (6) are provided on the inner cavity wall of the housing (5). Grooves that are slidably matched with the guide ribs are provided on both the slider (7) and the rotating shaft (6). A vacant section for the rotating shaft (6) to rotate around the axis is provided near the end of the guide rib.

4. The semi-embedded balance hinge according to claim 1, characterized in that, Anti - misalignment convex ribs are provided on the polygonal boss (20) of the rotating shaft (6), and corresponding grooves are provided on the main rocker arm (11).

5. The semi-embedded balance hinge according to claim 1, wherein A flat washer (8) is provided between the slider (7) and the compression spring (9).

6. The semi-embedded balance hinge according to claim 1, characterized in that, Positioning holes are provided at the relative positions of the housing (5) and the rotating shaft (6), and the two are positioned by pins during pre-assembly.

7. The semi-embedded balance hinge according to claim 1, wherein It further includes a decorative cover (15) detachably covering the housing (5), and a cover detachably covering the main swing arm (11) and the auxiliary swing arm (12).

8. The semi-embedded balance hinge according to claim 7, wherein, It further includes a hinge mounting shell (10) provided on the inner wall of the device body (1) for covering the housing (5).

9. The semi-embedded balance hinge according to claim 8, characterized in that, The hinge mounting shell (10) and the gap between the hinge mounting shell (10) and the inner wall of the device body (1) are wrapped and sealed with foaming material.

10. The semi-embedded balance hinge according to claim 8, characterized in that, A number of bumps (28) are provided on the housing (5), and grooves (29) engaged with the bumps (28) are provided on the hinge mounting shell (10).

11. The semi-embedded balance hinge according to claim 10, wherein, An earpiece (25) with a circular hole is provided on the lower side of the housing (5), and a screw mounting hole (30) engaged with the circular hole of the earpiece (25) is provided on the hinge mounting shell (10).

12. The semi-embedded balance hinge according to claim 11, characterized in that, A hanging platform (23) for hooking the earpiece (25) is provided on the lower side of the decorative cover (15), and a buckle (22) for clamping the bump (28) is provided on the upper side of the decorative cover (15).

13. A device with a door body, characterized in that, It includes a semi-embedded balance hinge according to any one of claims 1-12.

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