Hidden heaven and earth shaft hinge assembly

Abstract

The utility model relates to a hidden heaven and earth shaft hinge assembly which comprises a door leaf, a top partition, an upper hinge unit and a lower hinge unit. An upper cavity and a lower cavity are formed in the side, close to the door frame, of the door leaf. The upper hinge unit comprises a shaft sleeve and a shaft pin assembly rotatably mounted at the lower end of the shaft sleeve, the shaft sleeve is fixedly mounted in the top partition, and the shaft pin assembly is fixedly mounted in the upper cavity; the lower hinge unit comprises a base and a lower shaft assembly installed at the upper end of the base, the base is fixedly installed on the ground of the door frame edge, and the lower shaft assembly is fixedly installed in the lower cavity. After the upper shaft hinge and the lower shaft hinge are respectively integrated into a whole, the upper shaft and the lower shaft are respectively inserted into the upper cavity and the lower cavity of a door leaf profile and are fixed by mechanical screws during installation, the upper shaft pin adjustably retracts into the door leaf cavity, and the lower shaft and the base are accurately positioned on the edge of a door frame, so that the upper shaft hinge and the lower shaft hinge are very convenient to install and can be repeatedly installed, and the hiding effect of the upper shaft hinge and the lower shaft hinge is completely realized; the appearance is very simple and clean, and the load can completely meet market requirements.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of building material accessories, and particularly relates to a hidden top-and-bottom shaft hinge assembly. BACKGROUND

[0002] The top-and-bottom shaft hinge is an important hardware connecting the door leaf and the door pocket.

[0003] In the prior art, the main structure of the top-and-bottom shaft hinge is mostly in an externally visible state, which affects the overall aesthetic appearance of the door and the door frame. Moreover, the shaft pin structure needs to be regularly lubricated to solve the problems of laborious opening and closing and abnormal noise, which is relatively cumbersome.

[0004] Therefore, there is an urgent need for a hidden top-and-bottom shaft hinge assembly that can solve the above problems. UTILITY MODEL CONTENTS

[0005] To solve the above problems, the utility model provides a hidden top-and-bottom shaft hinge assembly, which comprises a door leaf, a top partition, an upper hinge unit and a lower hinge unit.

[0006] The side of the door leaf close to the door frame is provided with an upper cavity and a lower cavity.

[0007] The upper hinge unit comprises a shaft sleeve and a shaft pin assembly rotatably installed at the lower end of the shaft sleeve, wherein the shaft sleeve is fixedly installed in the top partition, and the shaft pin assembly is fixedly installed in the upper cavity.

[0008] The lower hinge unit comprises a base and a lower shaft assembly installed at the upper end of the base, wherein the base is fixedly installed on the ground beside the door frame, and the lower shaft assembly is fixedly installed in the lower cavity.

[0009] Further, the center of the shaft sleeve is provided with an inner cavity.

[0010] The shaft pin assembly comprises a main element and a shaft pin slidably installed in the main element, wherein one side of the main element is further provided with a positioning screw to relatively lock the relative position of the main element and the shaft pin.

[0011] The shaft pin is rotatably inserted into the inner cavity, and the main element is fixedly installed in the upper cavity.

[0012] Further, the upper end surface of the main element is provided with a mounting groove, and the shaft pin is slidably installed in the mounting groove.

[0013] The mounting groove is further provided with a spring, one end of the spring is connected to the bottom surface of the mounting groove, and the other end contacts the lower end surface of the shaft pin.

[0014] One side of the main element is provided with a waist-shaped hole, the waist-shaped hole is in communication with the mounting groove, a threaded hole is formed in the shaft pin, and the positioning screw penetrates through the waist-shaped hole and cooperates with the threaded hole in the shaft pin.

[0015] Further, the lower shaft assembly comprises a connecting shaft sleeve, a lower shaft sleeve and a lower main body;

[0016] The connecting shaft sleeve is fixedly installed at the upper end of the base, the lower shaft sleeve is fixedly installed in the lower main body, and the connecting shaft sleeve is rotatably installed in the lower shaft sleeve.

[0017] Further, the lower end surface of the lower main body is provided with a second installation groove, and the lower shaft sleeve is fixedly installed in the second installation groove.

[0018] The center of the lower shaft sleeve is provided with a second inner cavity, and the shape and size of the second inner cavity are matched with the connecting shaft sleeve, and the connecting shaft sleeve is rotatably installed in the second inner cavity.

[0019] Further, the lower shaft assembly further comprises a lower shaft fixedly installed at the upper end of the base, and the lower shaft is fixedly installed in the connecting shaft sleeve.

[0020] Further, the lower shaft comprises a connecting portion fixedly installed at the upper end of the base and a plug-in portion extending upward from the upper end surface of the connecting portion, the lower end of the connecting shaft sleeve is provided with a plug-in groove, and the plug-in portion is slidably installed in the plug-in groove.

[0021] The side of the connecting shaft sleeve is further threadedly connected with a top screw.

[0022] Further, the lower shaft assembly further comprises a steel ball arranged between the connecting shaft sleeve and the lower shaft sleeve.

[0023] The upper end surface of the connecting shaft sleeve is provided with a first hemispherical groove, the bottom surface of the second inner cavity is provided with a second hemispherical groove, and the shape and size of the first hemispherical groove and the second hemispherical groove are matched with the steel ball.

[0024] Further, the material of the shaft sleeve is copper, and the inner cavity of the shaft sleeve is filled with butter.

[0025] And / or, the material of the lower shaft sleeve is copper, and the inner cavity of the lower shaft sleeve is filled with butter.

[0026] Further, the material of the main body element is aluminum alloy.

[0027] And / or, the material of the shaft pin is stainless steel.

[0028] And / or, the material of the connecting shaft sleeve is stainless steel.

[0029] And / or, the material of the lower main body is aluminum alloy.

[0030] And / or, the material of the lower shaft is stainless steel.

[0031] Compared with the prior art, the advantages of the utility model lie in that:

[0032] 1. The utility model discloses a heaven and earth axle hinge is integrated as a whole, and when installing, the upper and lower shafts are inserted into the upper and lower cavities of the door leaf profile respectively, and are fixed by mechanical screws, the upper shaft pin can be adjusted to retract into the door leaf cavity, and the lower shaft is accurately positioned with the base on the door frame edge, which is very convenient to install, can realize repeated installation multiple times, completely realizes the hiding effect of the heaven and earth axle hinge, and the appearance is extremely simple and clean and can fully meet the market requirements.

[0033] 2. After the upper and lower shafts are inserted into the door leaf profile cavity, the door leaf and the door leaf profile form a whole, and the upper shaft sleeve is shaken within the range of 0.5mm to 1.0mm, and four rounds of fine adjustment are carried out, on the other hand, for the lower shaft positioning, the base steel plate is freely movable relative to the door frame, and the position can be adjusted by the installer, and the adjustable range is 1.0mm to 2.0mm.

[0034] 3. The material of the shaft sleeve is copper, the copper sleeve has a self-lubricating function, and regular addition of lubricating oil is avoided.

[0035] 4. When installing the door leaf, the shaft pin needs to be retracted into the installation groove, and a tool is used to achieve this purpose, when the door leaf is in position, the tool is loosened, the spring is ejected to eject the shaft pin, the shaft pin enters the copper sleeve, and the convenient installation of the upper shaft is realized.

[0036] 5. When the positioning screw slides up and down in the main element to the specified position, the positioning screw is rotated, passes through the shaft pin, and is pushed to the other side of the inner wall of the installation groove, the screw function is realized, the up and down direction of the shaft pin is adjustable, and installation and adjustment are facilitated.

[0037] 6. The lower shaft is fixedly installed in the connecting shaft sleeve by the screwing of the screw, and the insertion length of the insertion part can also be adjusted by unscrewing the screw, so that the up and down position of the lower shaft is adjustable, and installation and adjustment are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0038] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are included only to illustrate the preferred embodiments and are not to be considered as limiting the present utility model. Moreover, like reference numerals are used to designate like parts throughout the various drawings. In the drawings:

[0039] Figure 1 It is a whole structure diagram of door and door sleeve;

[0040] Figure 2 It is Figure 1 A-A direction sectional view;

[0041] Figure 3 It is Figure 1 B-B direction sectional view;

[0042] Figure 4 It is an exploded schematic view of the upper hinge unit structure;

[0043] Figure 5 is a whole structure diagram of the upper hinge unit;

[0044] Figure 6 is a split structure diagram of the lower hinge unit;

[0045] Figure 7 is a whole structure diagram of the lower hinge unit;

[0046] Figure 8 is an exploded sectional view of the lower hinge unit;

[0047] In the figure, the door leaf 100, the upper cavity 110, the lower cavity 120, the top partition 200, the upper hinge unit 300, the lower hinge unit 400, the shaft sleeve 1, the inner cavity 11, the shaft pin assembly 2, the shaft pin 21, the main body element 22, the installation groove 221, the waist-shaped hole 222, the second threaded hole 223, the positioning screw 23, the spring 24, the lower shaft assembly 3, the lower shaft 31, the connecting part 311, the plug-in part 312, the connecting shaft sleeve 32, the plug-in groove 321, the top screw 322, the first half-sphere groove 323, the steel ball 33, the lower shaft sleeve 34, the second inner cavity 341, the second half-sphere groove 342, the lower main body 35, the second installation groove 351, the third threaded hole 352, the base 4, the first threaded hole 41, the welding through hole 42. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is described and explained below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application. Based on the examples provided in the present application, all other examples obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0049] As shown in Figures 1-8 The present embodiment provides a hidden top-and-ground shaft hinge assembly, which comprises a door leaf 100, a top partition 200, an upper hinge unit 300 and a lower hinge unit 400, wherein the upper hinge unit 300 connects the top of the door leaf 100 and the top partition 200, and the lower hinge unit 400 connects the bottom of the door leaf 100 and the ground, so as to realize the rotatable installation of the door leaf 100 to enable the door to be opened and closed.

[0050] Specifically, the door leaf 100 is provided with an upper cavity 110 and a lower cavity 120 near the side of the door frame, the upper hinge unit 300 comprises a shaft sleeve 1 and a shaft pin assembly 2 rotatably installed at the lower end of the shaft sleeve 1, wherein the shaft sleeve 1 is fixedly installed in the top partition 200, and the shaft pin assembly 2 is fixedly installed in the upper cavity 110; the lower hinge unit 400 comprises a base 4 and a lower shaft assembly 3 installed at the upper end of the base 4, wherein the base 4 is fixedly installed on the ground at the side of the door frame, and the lower shaft assembly 3 is fixedly installed in the lower cavity 120.

[0051] Through the above arrangement, the upper hinge unit 300 connects the top of the door leaf 100 and the top partition 200, and the lower hinge unit 400 connects the bottom of the door leaf 100 and the ground; at the same time, the shaft pin assembly 2 and the lower shaft assembly 3 are inserted into the door leaf profile, having the effect of hiding the main part. Preferably, the base 4 is provided with a plurality of first threaded holes 41, so as to be fixed to the ground by mechanical screws.

[0052] It is worth noting that the thickness of the door leaf 100 is the same as that of the top partition 200, thereby enhancing the overall integrity. Preferably, the thickness of the door leaf 100 is 100 mm. The material of the shaft sleeve 1 is copper, the copper sleeve has a self-lubricating function, and preferably, the inner cavity of the shaft sleeve 1 is filled with butter.

[0053] The upper hinge unit 300 of the embodiment comprises a shaft sleeve 1 having an inner cavity 11 in the center thereof; the shaft pin assembly 2 comprises a main element 22 and a shaft pin 21 slidably installed in the main element 22, wherein one side of the main element 22 is further provided with a positioning screw 23 for relatively locking the relative positions of the main element 22 and the shaft pin 21; and the shaft pin 21 is rotatably inserted into the inner cavity 11, and the main element 22 is fixedly installed in the upper cavity 110, thereby realizing the connection of the upper hinge unit 300 between the top of the door leaf 100 and the top partition 200. Preferably, the material of the main element 22 is aluminum alloy, and the material of the shaft pin 21 is stainless steel.

[0054] Specifically, the upper end surface of the main element 22 is provided with an installation groove 221, and the shaft pin 21 is slidably installed in the installation groove 221, wherein a spring 24 is further installed in the installation groove 221, one end of the spring 24 is connected to the bottom surface of the installation groove 221, and the other end contacts the lower end surface of the shaft pin 21; one side of the main element 22 is provided with a waist-shaped hole 222, and the waist-shaped hole 222 is through the installation groove 221, the shaft pin 21 is provided with a threaded hole, and the positioning screw 23 penetrates the waist-shaped hole 222 and cooperates with the threaded hole on the shaft pin 21.

[0055] Through the above arrangement, when installing the door leaf, the shaft pin 21 needs to be retracted into the installation groove 221, and a tool is used to achieve this purpose. When the door leaf is in place, the tool is loosened, the spring 24 is ejected to push out the shaft pin 21, and the shaft pin 21 enters the copper sleeve 1, thereby realizing the convenient installation of the upper shaft.

[0056] Meanwhile, when the positioning screw 23 is slid up and down to a designated position in the main body element 22, the positioning screw 23 is rotated to pass through the shaft pin 21 and abut against the other side of the inner wall of the mounting groove 221, thereby achieving the function of a jack screw. The up-and-down direction of the shaft pin 21 is adjustable, which facilitates installation and adjustment. Preferably, a plurality of second threaded holes 223 are formed in one side of the main body element 22, so that the shaft pin assembly 2 is fixedly connected to the upper cavity 110 by mechanical screws.

[0057] The lower hinge unit 400 of the present embodiment includes a coupling shaft sleeve 32, a lower shaft sleeve 34, and a lower main body 35. The coupling shaft sleeve 32 is fixedly installed at the upper end of the base 4, the lower shaft sleeve 34 is fixedly installed in the lower main body 35, and the coupling shaft sleeve 32 is rotatably installed in the lower shaft sleeve 34. Thus, the lower hinge unit 400 is coupled to the bottom of the door leaf 100 and the ground. Preferably, the material of the coupling shaft sleeve 32 is stainless steel, and the material of the lower main body 35 is aluminum alloy.

[0058] It is worth noting that the material of the lower shaft sleeve 34 is copper, which has a self-lubricating function. Preferably, the inner cavity of the lower shaft sleeve 34 is filled with butter.

[0059] Specifically, a second mounting groove 351 is formed in the lower end face of the lower main body 35, and the lower shaft sleeve 34 is fixedly installed in the second mounting groove 351, so as to be fixedly installed in the lower main body 35. A second inner cavity 341 is formed in the center of the lower shaft sleeve 34, and the shape and size thereof are matched with the coupling shaft sleeve 32, and the coupling shaft sleeve 32 is rotatably installed in the second inner cavity 341. Preferably, a plurality of third threaded holes 352 are formed in one side of the lower main body 35, so that the lower shaft assembly 3 is fixedly connected to the lower cavity 120 by mechanical screws.

[0060] In the present embodiment, the lower shaft assembly 3 further includes a lower shaft 31 fixedly installed at the upper end of the base 4, and the lower shaft 31 is fixedly installed in the coupling shaft sleeve 32, thereby facilitating the overall assembly of the lower shaft assembly 3. Preferably, the material of the lower shaft 31 is stainless steel.

[0061] Specifically, the lower shaft 31 includes a connecting portion 311 fixedly installed at the upper end of the base 4 and a plug-in portion 312 extending upward from the upper end face of the connecting portion 311, and a plug-in groove 321 is formed in the lower end of the coupling shaft sleeve 32, and the plug-in portion 312 is slidably installed in the plug-in groove 321. A jack 322 is threadedly connected to one side of the coupling shaft sleeve 32. Thus, the plug-in portion 312 is tightly pressed by the jack 322, and the lower shaft 31 is fixedly installed in the coupling shaft sleeve 32. Meanwhile, the plug-in length of the plug-in portion 312 can be adjusted by loosening the jack 322, so that the up-and-down position of the lower shaft 31 is adjustable, thereby facilitating installation and adjustment. Preferably, the connecting portion 311 is welded to the upper end of the base 4, and the base 4 is provided with a welding through hole 42.

[0062] In this embodiment, the lower shaft assembly 3 further comprises a steel ball 33 arranged between the connecting shaft sleeve 32 and the lower shaft sleeve 34, so that the steel ball is interposed between the lower shaft sleeve 34 and the connecting shaft sleeve 32, and the force is evenly distributed, the friction is reduced, the rotation is smooth, the bearing buffering and the rotation times are increased, and the service life of the hinge is increased. Specifically, the upper end face of the connecting shaft sleeve 32 is provided with a first hemispherical groove 323, the bottom face of the second inner cavity 341 is provided with a second hemispherical groove 342, and the shapes and sizes of the first hemispherical groove 323 and the second hemispherical groove 342 are matched with the steel ball 33.

[0063] The above merely describes a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, and all of these should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A concealed overhead and underfloor hinge assembly, comprising a door leaf, a top partition, an upper hinge unit and a lower hinge unit; characterized in that the door leaf is provided with an upper cavity and a lower cavity on a side close to a door frame; the upper hinge unit comprises a sleeve and a pin assembly rotatably mounted at a lower end of the sleeve, wherein the sleeve is fixedly mounted in the top partition, and the pin assembly is fixedly mounted in the upper cavity; the lower hinge unit comprises a base and a lower shaft assembly mounted at an upper end of the base, wherein the base is fixedly mounted on the ground at a side of the door frame, and the lower shaft assembly is fixedly mounted in the lower cavity.

2. The concealed top and floor shaft hinge assembly according to claim 1, characterized in that, the sleeve is provided with an inner cavity in a center thereof; the pin assembly comprises a main body and a pin slidably mounted in the main body, wherein a positioning screw is further mounted on a side of the main body to relatively lock a relative position of the main body and the pin; the pin is rotatably inserted into the inner cavity, and the main body is fixedly mounted in the upper cavity.

3. The concealed top and floor shaft hinge assembly according to claim 2, characterized in that, the main body is provided with a mounting groove in an upper end face thereof, and the pin is slidably mounted in the mounting groove; wherein a spring is further mounted in the mounting groove, one end of the spring is connected to a bottom face of the mounting groove, and the other end of the spring contacts a lower end face of the pin; a waist-shaped hole is provided in a side of the main body and penetrates the mounting groove, a threaded hole is provided in the pin, and the positioning screw penetrates the waist-shaped hole and cooperates with the threaded hole in the pin.

4. The flush flush-to-the-sky ceiling and floor shaft hinge assembly according to any one of claims 1-3, characterized in that, the lower shaft assembly comprises a coupling sleeve, a lower sleeve and a lower main body; wherein the coupling sleeve is fixedly mounted at an upper end of the base, the lower sleeve is fixedly mounted in the lower main body, and the coupling sleeve is rotatably mounted in the lower sleeve.

5. The concealed top and floor shaft hinge assembly according to claim 4, characterized in that, the lower main body is provided with a second mounting groove in a lower end face thereof, and the lower sleeve is fixedly mounted in the second mounting groove; the lower sleeve is provided with a second inner cavity in a center thereof, and a shape and size of the second inner cavity match those of the coupling sleeve, and the coupling sleeve is rotatably mounted in the second inner cavity.

6. The concealed top and floor shaft hinge assembly according to claim 5, characterized in that, the lower shaft assembly further comprises a lower shaft fixedly mounted at the upper end of the base and fixedly mounted in the coupling sleeve.

7. The concealed top and floor shaft hinge assembly according to claim 6, characterized in that, the lower shaft comprises a connecting portion fixedly mounted at the upper end of the base and a plug-in portion extending upward from an upper end face of the connecting portion, the coupling sleeve is provided with a plug-in groove in a lower end thereof, and the plug-in portion is slidably mounted in the plug-in groove; wherein a top screw is further threadedly connected to a side of the coupling sleeve.

8. The concealed top and floor shaft hinge assembly according to claim 7, characterized in that, the lower shaft assembly further comprises a steel ball arranged between the coupling sleeve and the lower sleeve; wherein a first half-sphere groove is provided in an upper end face of the coupling sleeve, a second half-sphere groove is provided in a bottom face of the second inner cavity, and a shape and size of each of the first half-sphere groove and the second half-sphere groove match those of the steel ball.

9. The concealed top and floor shaft hinge assembly according to claim 4, wherein, the sleeve is made of copper; and / or, the lower sleeve is made of copper.

10. The concealed mortise and tenon hinge assembly of claim 8, wherein, the main body is made of aluminum alloy; and / or, the pin is made of stainless steel; and / or, the coupling sleeve is made of stainless steel; and / or, the lower main body is made of aluminum alloy; and / or, the lower shaft is made of stainless steel.

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