Concealed adjustable hinge

Abstract

The utility model relates to door and window hardware fitting technical field, especially related to hidden adjustable hinge, including left casing, right casing, the function shaft of setting in right casing, be equipped with the connecting assembly of transmission moment between left casing and right casing, left casing includes left box body, left support, left support includes support body, sets up the adjusting ear block of adjusting ear block length direction both ends of support body, be equipped with first waist -shaped groove on adjusting ear block, be equipped with the installation cavity containing support body, the adjusting cavity containing adjusting ear block in left box body, the cavity bottom of adjusting cavity is higher than the cavity bottom of installation cavity, and there is height difference between both, the cavity bottom of adjusting cavity is equipped with second waist -shaped groove, the axis of first waist -shaped groove and the axis of second waist -shaped groove are cross, the utility model has the beneficial effect that: the number of parts and overall volume of left casing are reduced, effectively reduce hinge dead weight.

Description

Technical Field

[0001] This utility model relates to the technical field of door and window hardware accessories, specifically to a concealed adjustable hinge. Background Technology

[0002] Currently, invisible hinges are increasingly used in door installations, and invisible hinges with automatic closing function and hydraulically controlled closing speed are also becoming more common. Application document with application number 202521515022.1 discloses an adjustable hinge, including a left shell, a right shell, and a functional shaft disposed in the right shell. A torque-transmitting connecting assembly is provided between the left shell and the right shell. The left shell includes a left housing, a left large bracket, and a left small bracket. The left large bracket includes a large base that accommodates the left small bracket and large base blocks disposed at both ends of the long direction of the large base plate. The left small bracket is connected to the connecting assembly and includes a small base and small base blocks disposed at both ends of the long direction of the small base.

[0003] The left shell of the aforementioned adjustable hinge consists of a left housing, a left large bracket, and a left small bracket, which increases the overall weight of the left shell and makes the overall structure redundant. In actual assembly, the large weight of the hinge places greater demands on the strength of the door and door frame. If the door and door frame are made of soft material or are not thick enough, they may not be able to withstand the weight of the hinge, causing the door to sag. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the shortcomings of the prior art by providing a hidden adjustable hinge, which reduces the number of parts in the left shell and effectively reduces the weight of the hinge.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A concealed adjustable hinge includes a left shell, a right shell, and a functional shaft disposed within the right shell. A torque-transmitting connecting assembly is provided between the left and right shells. The left shell includes a left housing and a left support. The left support includes a support body and adjusting lugs disposed at both ends of the support body along its length. Each adjusting lug has a first waist-shaped groove. The left housing has a mounting cavity for accommodating the support body and an adjusting cavity for accommodating the adjusting lugs. The bottom of the adjusting cavity is higher than the bottom of the mounting cavity, with a height difference between them. The bottom of the adjusting cavity has a second waist-shaped groove, and the axes of the first and second waist-shaped grooves intersect at a cross shape. The support body includes an L-shaped base and wall panels disposed at both ends of the base along its length. The base includes a vertical plate and a horizontal plate. The vertical plate has two spaced-apart connecting protrusions. The opposite end faces of the two wall panels have oblique sliding grooves. The left shell is connected to the connecting assembly via the connecting protrusions and oblique sliding grooves.

[0006] The present invention, possessing the above-mentioned features, replaces the redundant support structure of left box, left large bracket, and left small bracket in the prior application with a left box and a left bracket, reducing the number of parts in the left shell and thus effectively reducing the weight of the hinge, avoiding the problem of door sagging due to excessive hinge weight; the position of the door leaf is adjusted by setting a first waist-shaped groove and a second waist-shaped groove, the first waist-shaped groove and the second waist-shaped groove are cross-shaped, and their axial direction is the adjustment direction. The longitudinally set waist-shaped groove adjusts the size of the upper and lower door gaps, and the transversely set waist-shaped groove adjusts the flushness between the door leaf and the door frame after the door leaf is closed; the L-shaped structure of the bracket body can disperse the torque transmitted by the hinge during use and reduce local stress concentration.

[0007] A further feature of this invention is that the right housing includes a right box body and mounting blocks disposed at both ends of the right box body along its length. The right box body has a receiving cavity, and the functional shaft is rotatably mounted in the receiving cavity. The mounting block is L-shaped and includes a connecting block and a connecting ear. The connecting block is detachably connected to the end of the right box body. When the right housing and the left housing are closed, the end face of the connecting ear is in contact with the left housing.

[0008] The present invention, which has the above-mentioned features, separates the right outer shell into two parts: the right box body and two mounting blocks. From an overall perspective, this reduces production costs and simplifies the composition of the right outer shell.

[0009] A further feature of this invention is that the connecting block has at least one first connecting hole, and the right box body has a second connecting hole corresponding to the first connecting hole. The connecting block is installed on the right box body by fasteners passing through the first connecting hole.

[0010] The present invention, which has the above features, has two connecting blocks that are detachably connected to the right box body through fasteners, which simplifies the assembly process of the connecting blocks and the right box body and improves assembly efficiency.

[0011] A further feature of this invention is that the end face of the connecting block located on one side of the right box body along its length is the first processing surface, so the first processing surface does not contact the right box body. The first processing surface is provided with a first connecting hole that penetrates the connecting block along the length of the right box body, and the end face of the right box body that contacts the connecting block is provided with a corresponding second connecting hole.

[0012] The present invention having the above features: a first connecting hole is set on the first machined surface. As a first solution to realize the connection between the connecting block and the right box body, a first connecting hole penetrating the body is provided on the connecting block to facilitate the screwing in from one side of the connecting block during assembly.

[0013] A further feature of this invention is that the end face of the connecting block that connects to the right box body is a second processing surface, and a first connecting hole that penetrates the connecting block along the length direction of the right box body is provided on the second processing surface. A corresponding second connecting hole is provided on the end face of the right box body that contacts the connecting block.

[0014] The present invention with the above features: the first connecting hole is set on the second machined surface. In order to realize the second solution of connecting the connecting block and the right box body, the first connecting hole does not penetrate the connecting block. The screw needs to be screwed into the second connecting hole from the side wall of the right box body. Since the right box body has a cavity, this solution is also easy to assemble.

[0015] A further feature of this invention is that: a positioning protrusion is provided at one corner of the end face where the right box body is connected to the connecting block; a positioning groove is provided on the connecting block to which the positioning protrusion is inserted; a second connecting hole is provided on the end face where the positioning protrusion contacts the positioning groove; and a first connecting hole corresponding to the second connecting hole is provided on the connecting block.

[0016] The present invention with the above features: by setting a positioning protrusion as a third solution to realize the connection between the connecting block and the right box body, the second connecting hole in this solution has two processing methods and is respectively set on the two surfaces in contact with the positioning protrusion and the positioning groove.

[0017] A further feature of this invention is that the connecting assembly includes a first connecting arm and a second connecting arm. The first connecting arm includes a first connecting shaft and a second connecting shaft. Both ends of the first connecting shaft along its length are provided with an upper support arm and a lower support arm for connecting the second connecting shaft. A connecting rod with both ends inserted into an inclined groove passes through the first connecting shaft. A connecting rod with both ends connected to the right housing passes through the second connecting shaft. The second connecting arm includes a connecting vertical plate and a middle support arm located in the middle of the connecting vertical plate. A hinge groove is provided in the middle of the connecting vertical plate. A hinge shaft protrudes from the outer circumference of the functional shaft and is hinged to the connecting vertical plate. The middle support arm is placed between the upper support arm and the lower support arm and connected to them via a connecting rod. The middle support arm is placed between two connecting protrusions and hinged to them. Both the upper support arm and the lower support arm have clearance grooves for the connecting protrusions on their inner sides.

[0018] The present invention with the above features has the following characteristics: the two ends of the first connecting shaft are placed in the inclined sliding groove. When the door is opened and closed, the two ends of the first connecting arm can slide in the inclined sliding groove. The distance between the door and the door frame when the hinge is fully open can be flexibly adjusted to meet the installation requirements of materials with high spacing requirements, such as wooden door panels, and avoid interference between the door panel and the frame. At the same time, the hinge can still be applied to scenarios with small spacing requirements.

[0019] A further feature of this invention is that: one end of the functional shaft is provided with a speed regulating component for adjusting the flow speed of hydraulic oil within the functional shaft; one end of the speed regulating component extends into the box wall of the right box body, and a driven gear is provided at its end; the mounting block includes an upper mounting block and a lower mounting block respectively disposed at both ends of the right box body; the upper mounting block is provided with a gear groove for accommodating the driven gear; the gear groove is also provided with a driving gear that meshes with the driven gear; and the upper mounting block is provided with an operating port for the user to rotate the driving gear at the position corresponding to the driving gear.

[0020] The present invention, which has the above-mentioned features, has a passive gear at the end of the speed regulating component that can drive it to rotate, and a driving gear that meshes with the passive gear. By operating the driving gear, the speed regulating component can be rotated, thereby realizing the speed regulation of the functional shaft. This is more convenient and practical, as it does not require tools.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0023] Figure 2 This is an exploded view of an embodiment of the present utility model.

[0024] Figure 3 This is a schematic diagram of the structure of the left support in an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the structure of the left shell in an embodiment of the present invention.

[0026] Figure 5 This is an exploded view of the right shell of an embodiment of this utility model.

[0027] Figure 6 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0028] Figure 7 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0029] Figure 8 This is a structural schematic diagram of Embodiment 3 of the present invention.

[0030] Figure 9 This is a schematic diagram of the structure of the first connecting arm in an embodiment of the present invention.

[0031] Figure 10 This is a schematic diagram of the structure of the second connecting arm in an embodiment of the present invention.

[0032] Figure 11 This is a schematic diagram of the installation of the first connecting arm in an embodiment of this utility model.

[0033] Figure 12 This is a schematic diagram of the installation of the second connecting arm in an embodiment of this utility model. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings: like Figure 1-12 The concealed adjustable hinge shown includes a left housing 1, a right housing 2, and a functional shaft 3 disposed in the right housing 2. A torque transmission connecting component is provided between the left housing 1 and the right housing 2.

[0035] The left housing 1 includes a left box body 11 and a left support 12. The left support 12 includes a support body 121 and adjusting lugs 122 disposed at both ends of the support body 121 along its length. The adjusting lugs 122 are provided with a first waist-shaped groove 1221. The left box body 11 has a mounting cavity 111 for accommodating the support body 121 and an adjusting cavity 112 for accommodating the adjusting lugs 122. The bottom of the adjusting cavity 112 is higher than the bottom of the mounting cavity 111, and there is a height difference between the two. The bottom of the adjusting cavity 112 is provided with a second waist-shaped groove 1121. The first waist-shaped groove 1221 and the second waist-shaped groove 1121 are connected. The axes of 21 intersect in a cross shape. Screws are inserted into the first waist-shaped groove 1221 and the second waist-shaped groove 1121. The bracket body 121 includes an L-shaped base 1211 and wall plates 1212 disposed at both ends of the base 1211 along its length. The base 1211 includes a vertical plate 12111 and a horizontal plate 12112. Two spaced connecting protrusions 1213 are provided on the vertical plate 12111. Inclined sliding grooves 12121 are provided on the opposite end faces of the two wall plates 1212. The left housing 1 is connected to the connecting assembly through the connecting protrusions 1213 and the inclined sliding grooves 12121.

[0036] The right housing 2 includes a right box body 21 and mounting blocks 22 disposed at both ends of the right box body 21 along its length. The right box body 21 has a receiving cavity 211. The functional shaft 3 is rotatably installed in the receiving cavity 211. The mounting block 22 is L-shaped and includes a connecting block 221 and a connecting ear 222. The connecting block 221 is detachably connected to the end of the right box body 21. When the right housing 2 and the left housing 1 are closed, the end face of the connecting ear 222 is in contact with the left housing 1. The connecting block 221 has at least one first connecting hole 2211. The right box body 21 has a second connecting hole 212 corresponding to the first connecting hole 2211. The connecting block 221 is installed on the right box body 21 by fasteners passing through the first connecting hole 2211. The fasteners are preferably screws.

[0037] The following are three embodiments illustrating how the first and second connecting holes are specifically configured: Example 1: The end face of the connecting block 221 located on one side of the right box 21 along its length is the first processing surface 2212. The first processing surface 2212 does not contact the right box 21. The first processing surface 2212 is provided with a first connecting hole 2211 that penetrates the connecting block 221 along the length of the right box 21. The end face of the right box 21 that contacts the connecting block 221 is provided with a corresponding second connecting hole 212.

[0038] Example 2: The side end face where the connecting block 221 connects to the right box 21 is the second processing surface 2213. The second processing surface 2213 is provided with a first connecting hole 2211 that penetrates the connecting block 221 along the length direction of the right box 21. The end face of the right box 21 that contacts the connecting block 221 is provided with a corresponding second connecting hole 212.

[0039] Example 3: A positioning protrusion 213 is provided at one corner of the end face where the right box body 21 is connected to the connecting block 221. The connecting block 221 is provided with a positioning groove 2214 that is inserted into the positioning protrusion 213. A second connecting hole 212 that penetrates the positioning protrusion 213 is provided on the end face where the positioning protrusion 213 contacts the positioning groove 2214. A first connecting hole 2211 that corresponds to the fifth connecting hole is provided through the connecting block 221.

[0040] The connecting assembly includes a first connecting arm 4 and a second connecting arm 5. The first connecting arm 4 includes a first connecting shaft 41 and a second connecting shaft 42. Both ends of the first connecting shaft 41 in the length direction are provided with an upper support arm 43 and a lower support arm 44 that connect to the second connecting shaft 42. A connecting rod 6 with both ends inserted into the inclined sliding groove 12121 passes through the first connecting shaft 41. A connecting rod 6 with both ends connected to the right housing 2 passes through the second connecting shaft 42. The second connecting arm 5 includes a connecting vertical plate 51 and a middle support arm 52 located in the middle of the connecting vertical plate 51. A hinge groove 511 is provided in the middle of the connecting vertical plate 51. A hinge shaft 31 that is hinged to the connecting vertical plate 51 protrudes from the outer circumference of the functional shaft 3. The middle support arm 52 is placed between the upper support arm 43 and the lower support arm 44 and connected by the connecting rod 6. The middle support arm 52 is placed between and hinged to the two connecting protrusions 1213. The inner sides of the upper support arm 43 and the lower support arm 44 are provided with relief grooves 45 for the connecting protrusions 1213.

[0041] One end of the functional shaft 3 is provided with a speed regulating component 32 for adjusting the flow speed of hydraulic oil inside the functional shaft 3. One end of the speed regulating component 32 extends into the box wall of the right box 21, and a driven gear 7 is provided at its end. The mounting block 22 includes an upper mounting block 223 and a lower mounting block 224 respectively located at both ends of the right box 21. The upper mounting block 223 is provided with a gear groove 2231 for accommodating the driven gear 7. The gear groove 2231 is also provided with a driving gear 8 that meshes with the driven gear 7. The upper mounting block 223 is provided with an operation port 2232 for the user to rotate the driving gear 8 at the position corresponding to the driving gear 8.

[0042] During installation, both the left and right housings can be installed inside the door leaf. In this embodiment, it is assumed that the left housing is installed in the door frame and the right housing is installed in the door leaf. After installation, the installation position of the door leaf in the door frame can still be adjusted. To adjust, loosen the screws in the first and second oblong grooves. If it is necessary to adjust the size of the upper and lower door gaps, move the left bracket along the axis of the second oblong groove. If it is necessary to adjust the alignment of the door leaf with the door frame, move the left bracket along the axis of the first oblong groove. After installation, the speed of the functional shaft can be adjusted by rotating the drive gear, which drives the driven gear to rotate, thereby adjusting the functional shaft.

Claims

1. A concealed adjustable hinge, comprising a left housing, a right housing, and a functional shaft disposed within the right housing, wherein a torque-transmitting connecting assembly is provided between the left housing and the right housing, characterized in that: The left housing includes a left box and a left support. The left support includes a support body and adjusting lugs at both ends of the support body along its length. Each adjusting lug has a first waist-shaped groove. The left box has a mounting cavity for accommodating the support body and an adjusting cavity for accommodating the adjusting lugs. The bottom of the adjusting cavity is higher than the bottom of the mounting cavity, with a height difference between them. The bottom of the adjusting cavity has a second waist-shaped groove. The axis of the first waist-shaped groove and the axis of the second waist-shaped groove intersect each other in a cross shape. The support body includes an L-shaped base and wall panels at both ends of the base along its length. The base includes a vertical plate and a horizontal plate. The vertical plate has two spaced connecting protrusions. The two wall panels have oblique sliding grooves on their opposite end faces. The left housing is connected to a connecting assembly through the connecting protrusions and oblique sliding grooves.

2. The concealed adjustable hinge according to claim 1, characterized in that: The right housing includes a right box body and mounting blocks disposed at both ends of the right box body along its length. The right box body has a receiving cavity, and the functional shaft is rotatably mounted in the receiving cavity. The mounting block is L-shaped and includes a connecting block and a connecting ear. The connecting block is detachably connected to the end of the right box body. When the right housing and the left housing are closed, the end face of the connecting ear is in contact with the left housing.

3. The concealed adjustable hinge according to claim 2, characterized in that: The connecting block is provided with at least one first connecting hole, and the right box is provided with a second connecting hole corresponding to the first connecting hole. The connecting block is installed on the right box by fasteners passing through the first connecting hole.

4. The concealed adjustable hinge according to claim 2, characterized in that: The first processing surface is located on one side of the connecting block along the length of the right box body. Therefore, the first processing surface does not contact the right box body. The first processing surface is provided with a first connecting hole that penetrates the connecting block along the length of the right box body. The end face of the right box body that contacts the connecting block is provided with a corresponding second connecting hole.

5. The concealed adjustable hinge according to claim 2, characterized in that: The side face of the connecting block that connects to the right box is the second processing surface. The second processing surface is provided with a first connecting hole that penetrates the connecting block along the length direction of the right box. The end face of the right box that contacts the connecting block is provided with a corresponding second connecting hole.

6. The concealed adjustable hinge according to claim 2, characterized in that: A positioning protrusion is provided at one corner of the end face where the right box body connects to the connecting block. The connecting block is provided with a positioning groove that is inserted into the positioning protrusion. A second connecting hole that penetrates the positioning protrusion is provided on the end face where the positioning protrusion contacts the positioning groove. A first connecting hole that corresponds to the second connecting hole is provided through the connecting block.

7. The concealed adjustable hinge according to any one of claims 1-6, characterized in that: The connecting assembly includes a first connecting arm and a second connecting arm. The first connecting arm includes a first connecting shaft and a second connecting shaft. Both ends of the first connecting shaft along its length are provided with an upper support arm and a lower support arm that connect to the second connecting shaft. A connecting rod with both ends inserted into an inclined sliding groove passes through the first connecting shaft. A connecting rod with both ends connected to the right housing passes through the second connecting shaft. The second connecting arm includes a connecting vertical plate and a middle support arm located in the middle of the connecting vertical plate. A hinge groove is provided in the middle of the connecting vertical plate. A hinge shaft protrudes from the outer circumference of the functional shaft and is hinged to the connecting vertical plate. The middle support arm is placed between the upper support arm and the lower support arm and connected to them via a connecting rod. The middle support arm is placed between and hinged to two connecting protrusions. Both the upper support arm and the lower support arm have clearance grooves for the connecting protrusions on their inner sides.

8. The concealed adjustable hinge according to claim 7, characterized in that: One end of the functional shaft is provided with a speed regulating component for adjusting the flow speed of hydraulic oil within the functional shaft. One end of the speed regulating component extends into the box wall of the right box body, and a driven gear is provided at its end. The mounting block includes an upper mounting block and a lower mounting block respectively located at both ends of the right box body. The upper mounting block is provided with a gear groove for accommodating the driven gear. The gear groove is also provided with a driving gear that meshes with the driven gear. The upper mounting block is provided with an operating port for the user to rotate the driving gear at the position corresponding to the driving gear.

Images