Lower hinge capable of improving adjusting precision

Abstract

The utility model discloses a lower hinge capable of improving adjusting precision in the field of building door and window hinges, which comprises a bottom rail, a door and window connecting component, a hinge piece and an adjusting piece, an adjusting plate is arranged at the bottom of the bottom rail, a first sliding groove is arranged on the adjusting plate, and a second sliding groove is correspondingly arranged on the bottom rail. The hinge piece sequentially penetrates through the first sliding groove and the second sliding groove to be hinged to the door and window connecting assembly. An adjusting groove is formed in the bottom rail, a plurality of tooth grooves are formed in the side wall of the adjusting groove, the tooth grooves are arranged in an arc shape in the length direction of the adjusting groove, a plurality of adjusting teeth are correspondingly arranged on the adjusting piece, the adjusting teeth are meshed with the tooth grooves, and the bottom of the adjusting piece is connected with the adjusting plate. According to the utility model, the problem that the adjustment precision is reduced due to the fact that the relative position of a door window and a window frame is finely adjusted by adopting an eccentric rivet in the prior art is solved, the adjustment piece can accurately move along a preset path, and the actual moving distance of the adjustment block meets an expected value, so that the adjustment precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to building door and window hinge technical field, concretely, it is a kind of lower hinge of improving adjustment accuracy. BACKGROUND

[0002] In order to guarantee the smooth opening and tight sealing of door and window, the connecting assembly of door and window and window frame plays a vital role. Usually, the bottom of the inner casement door and window sash is connected with the window frame through the bottom hinge. However, the traditional bottom hinge often adopts fixed installation mode, which means that the left and right positions of the window sash and the window frame cannot be adjusted after installation. If there is an error in the installation of the window sash, it may cause the window sash to be blocked or not tightly sealed. In addition, once the installation position of the window sash deviates, it often needs to be disassembled and reassembled for adjustment, which undoubtedly increases the construction difficulty, prolongs the construction period and increases the cost.

[0003] In order to solve the above technical problems, the existing eccentric rivet and adjusting block are used to fine-tune the relative position of the door and window and the window frame. The eccentric rivet can rotate in the adjusting hole of the adjusting block. By rotating the eccentric rivet, the left and right movements of the door and window are driven through the adjusting block. In the ideal state, the shaft of the eccentric rivet and the adjusting hole of the adjusting block are zero-to-zero matched, which means that there is no gap. However, in actual application, due to manufacturing tolerance, material deformation or installation error, there is a certain gap between the shaft of the eccentric rivet and the adjusting hole of the adjusting block. When the eccentric rivet rotates, due to the existence of the gap, the eccentric rivet may produce a certain deviation or shaking during the rotation process, which causes the eccentric rivet to move the adjusting block according to the expected path, so that the actual moving distance of the adjusting block is less than the expected value. Not only will it reduce the adjustment accuracy and make the door and window unable to be accurately positioned, but also it may affect the smooth opening and sealing performance of the door and window.

[0004] The above defects need to be solved urgently. INVENTION CONTENTS

[0005] In order to solve the problem of reducing the adjustment accuracy by using the eccentric rivet to fine-tune the relative position of the door and window and the window frame, the utility model provides a lower hinge for improving the adjustment accuracy.

[0006] The technical scheme of the utility model is as follows:

[0007] A lower hinge for improving the adjustment accuracy, comprising a bottom rail, a door and window connecting assembly, a hinge piece and an adjusting piece, the bottom of the bottom rail is provided with an adjusting plate, the adjusting plate is provided with a first sliding groove, the bottom rail is correspondingly provided with a second sliding groove, the hinge piece passes through the first sliding groove and the second sliding groove in sequence and is hinged with the door and window connecting assembly.

[0008] The bottom rail is provided with an adjusting groove, the sidewall of the adjusting groove is provided with a plurality of tooth grooves arranged in an arc shape along the length of the adjusting groove, a plurality of adjusting teeth are correspondingly provided on the adjusting member, the adjusting teeth are engaged with the tooth grooves, and the bottom of the adjusting member is connected with the adjusting plate.

[0009] When the adjusting member rotates, the adjusting member drives the door and window connecting assembly to move left or right through the adjusting plate, so as to adjust the left and right positions of the door and window.

[0010] According to the above-mentioned scheme, the adjusting member includes a base and an adjusting part connected with the base, the plurality of adjusting teeth are arranged around one side of the adjusting part, and a limiting block is arranged on the other side of the adjusting part.

[0011] When the adjusting member rotates to a certain angle, the limiting block is in contact with the adjusting groove to limit the rotation angle of the adjusting member.

[0012] According to the above-mentioned scheme, the top of the base is provided with a rotating adjusting hole to facilitate the rotation of the adjusting member.

[0013] According to the above-mentioned scheme, the diameter of the base is greater than the groove width of the adjusting groove.

[0014] According to the above-mentioned scheme, the adjusting plate is provided with a mounting hole, and at least a part of the adjusting part is arranged in the mounting hole.

[0015] According to the above-mentioned scheme, a positioning groove is arranged between the first sliding groove and the mounting hole, and a positioning block is correspondingly arranged between the second sliding groove and the adjusting groove, the positioning block is arranged in the positioning groove, and the positioning block can slide along the positioning groove.

[0016] According to the above-mentioned scheme, the limiting block and the adjusting teeth are protruded from the outside of the adjusting part, so that a limiting step is formed between the three.

[0017] According to the above-mentioned scheme, the axis of the base is collinear with the axis of the adjusting part.

[0018] According to the above-mentioned scheme, the number of adjusting teeth is equal to the number of tooth grooves.

[0019] The door and window connecting assembly according to the utility model has the advantages that the first connecting arm, the second connecting arm and the supporting arm are connected with the adjusting plate through the hinge, the first connecting arm and the second connecting arm are connected with the supporting arm, and the door and window connecting assembly can be moved leftward or rightward through the adjusting plate when the adjusting member rotates, so that the leftward and rightward positions of the door and window can be adjusted.

[0020] The utility model has the advantages that:

[0021] The adjusting teeth of the adjusting member are engaged with the tooth grooves of the bottom rail, and the bottom of the adjusting member is connected with the adjusting plate, when the adjusting member rotates, the adjusting member drives the door and window connecting assembly to move leftward or rightward through the adjusting plate, so that the leftward and rightward positions of the door and window can be adjusted. Due to the engagement of the tooth grooves and the adjusting teeth, the gap and the error in the adjusting process can be reduced, compared with the adjusting mode of the traditional eccentric rivet, the close cooperation between the tooth grooves and the adjusting teeth can ensure that the adjusting member can move accurately along the predetermined path when rotating, so that the actual moving distance of the adjusting block meets the expected value, the deviation or the shaking caused by the gap is reduced, and the adjusting accuracy is improved. In addition, due to the interaction force between the adjusting teeth and the tooth grooves, the stability of the adjusting can be enhanced, and the problem of the decrease of the adjusting accuracy caused by loosening can be reduced.

[0022] In addition, the plurality of tooth grooves are arranged in an arc shape along the length of the adjusting groove, so that the tooth grooves and the adjusting teeth are closely matched, the gap in the adjusting process is reduced, and the adjusting is more accurate; at the same time, due to the arc shape arrangement of the tooth grooves, the adjusting teeth can move along the predetermined path of the tooth grooves during the rotating process, and the adjusting error caused by misalignment is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structure schematic view of the utility model;

[0024] Figure 2 It is a sectional view of the utility model;

[0025] Figure 3 It is a split view of the utility model;

[0026] Figure 4 It is one of structure schematic views of the adjusting member;

[0027] Figure 5 It is the second structure schematic view of the adjusting member;

[0028] Figure 6 It is a structure schematic view of the bottom rail and the adjusting plate;

[0029] Figure 7 It is a position schematic view of the bottom rail and the adjusting plate when the door and window do not need to be adjusted;

[0030] Figure 8 Positioning diagram of the bottom rail and the adjusting plate when the door and window is adjusted to the left;

[0031] Figure 9 Positioning diagram of the bottom rail and the adjusting plate when the door and window is adjusted to the right;

[0032] Figure 10 Application diagram of the utility model and the door and window;

[0033] Figure 11 is Figure 10 Enlarged view of A part in the middle.

[0034] In the drawings, 1, bottom rail; 11, second sliding groove; 12, adjusting groove; 13, tooth groove; 14, positioning protrusion;

[0035] 2, door and window connecting assembly; 21, first connecting arm; 22, second connecting arm; 23, supporting arm; 231, third sliding groove; 3, hinged piece;

[0036] 4, adjusting piece; 41, adjusting tooth; 42, base; 421, rotating adjusting hole; 43, adjusting part; 44, limiting block;

[0037] 5, adjusting plate; 51, first sliding groove; 52, mounting hole; 53, positioning groove;

[0038] 6, door and window frame; 7, door and window. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model more clearly understood, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0040] As Figure 1The utility model provides a lower hinge of improving adjustment accuracy, including bottom rail 1, door and window connecting assembly 2, hinged piece 3 and adjusting piece 4, bottom rail 1 is used for with door and window frame 6 is connected, and the bottom of bottom rail 1 is provided with adjusting plate 5, is provided with first sliding slot 51 on adjusting plate 5, and is provided with second sliding slot 11 on bottom rail 1 correspondingly, hinged piece 3 passes first sliding slot 51, second sliding slot 11 in proper order and is hinged with door and window connecting assembly 2, and the existence of first sliding slot 51 and second sliding slot 11 provides necessary moving space, thereby facilitating adjusting plate 5 to drive door and window connecting assembly 2 to act and move.

[0041] As Figures 2 to 4 As shown in the embodiment, the bottom rail 1 is provided with an adjusting groove 12, the side wall of the adjusting groove 12 is provided with a plurality of tooth grooves 13, and the plurality of tooth grooves 13 are arranged in an arc shape along the length of the adjusting groove 12. A plurality of adjusting teeth 41 are correspondingly provided on the adjusting piece 4, the adjusting teeth 41 are engaged with the tooth grooves 13, and the bottom of the adjusting piece 4 is connected with the adjusting plate 5. When the adjusting piece 4 rotates, the adjusting piece 4 drives the door and window connecting assembly 2 to move left or right through the adjusting plate 5, so as to adjust the left and right positions of the door and window 7.

[0042] In the embodiment, due to the meshing action of the tooth grooves 13 and the adjusting teeth 41, the gap and error in the adjustment process can be reduced. Compared with the traditional eccentric rivet adjustment mode, the close fit between the tooth grooves 13 and the adjusting teeth 41 can ensure that the adjusting piece 4 can move accurately along the predetermined path when rotating, so that the actual moving distance of the adjusting block meets the expected value, and the deviation or shaking caused by the gap is reduced, thereby improving the adjustment accuracy. In addition, due to the interaction force between the adjusting teeth 41 and the tooth grooves 13, the stability of the adjustment can be enhanced, and the problem of reduced adjustment accuracy caused by looseness can be reduced.

[0043] In the embodiment, the plurality of tooth grooves 13 are arranged in an arc shape along the length of the adjusting groove 12, so that the tooth grooves 13 are closely fitted with the adjusting teeth 41, the gap in the adjustment process is reduced, and the adjustment is more accurate. At the same time, due to the arc shape arrangement of the tooth grooves 13, the adjusting teeth 41 can move along the predetermined path of the tooth grooves 13 during the rotating process, avoiding the adjustment error caused by misalignment.

[0044] As Figure 4 , Figure 5As shown, in the present embodiment, the adjusting piece 4 comprises a base 42 and an adjusting portion 43 connected with the base 42, a plurality of adjusting teeth 41 are arranged on one side of the adjusting portion 43, a limiting block 44 is arranged on the other side of the adjusting portion 43, and the adjusting teeth 41 are oppositely arranged with the limiting block 44. When the adjusting piece 4 starts to rotate under the action of external force, the adjusting piece 4 will drive the door and window connecting assembly 2 to move along the preset path; when the adjusting piece 4 rotates to a certain angle, the limiting block 44 contacts with the adjusting groove 12 to limit the rotation angle of the adjusting piece 4, so as to ensure that the adjusting piece 4 can only rotate within the preset range, improve the safety and stability of the door and window 7 system, and effectively avoid the damage of the door and window 7 caused by excessive rotation.

[0045] In the present embodiment, the number of adjusting teeth 41 of the adjusting piece 4 is equal to the number of tooth grooves 13 of the bottom rail 1, and the movement of each adjusting tooth 41 corresponds to the distance of one tooth groove 13 on the bottom rail 1, which helps to achieve the requirement of precise position control. In addition, the pitch and height of the adjusting teeth 41 can be designed according to the actual situation, so as to design the distance of the adjusting piece 4 rotating one adjusting tooth 41, and in actual design, the pitch and height can be adjusted to realize different adjustment steps according to actual needs.

[0046] As shown in Figure 4 , Figure 5 In the present embodiment, the top of the base 42 is provided with a rotating adjusting hole 421, so that the user can more conveniently rotate the adjusting piece 4, and compared with directly operating the adjusting piece 4 itself, rotating through the rotating adjusting hole 421 is more labor-saving and easy to control. At the same time, the existence of the rotating adjusting hole 421 also provides a clear operation point, so that the user can more accurately position and operate during the adjusting process. In addition, the diameter of the base 42 is greater than the groove width of the adjusting groove 12, when the adjusting piece 4 is installed in the adjusting groove 12, at least a part of the adjusting portion 43 is arranged in the adjusting groove 12 of the bottom rail 1, and the bottom surface of the base 42 can tightly contact with the top surface of the bottom rail 1, so as to prevent the adjusting piece 4 from shaking or deviating during rotation, not only improving the stability of the adjusting piece 4, but also ensuring the safety of the door and window 7 during the adjusting process.

[0047] As shown in Figure 3 , Figure 4 In the present embodiment, the adjusting plate 5 is provided with a mounting hole 52, and at least a part of the adjusting portion 43 of the adjusting piece 4 is arranged in the mounting hole 52, so as to connect the adjusting plate 5 and the adjusting piece 4 together, facilitate the adjusting piece 4 to drive the adjusting plate 5 to move synchronously, and help to ensure the accuracy of the adjustment, so that the user can conveniently move the adjusting plate 5 by operating the adjusting piece 4, and then adjust the left and right positions of the door and window 7, improve the flexibility of the adjustment, and make the user can easily adjust the position of the door and window 7 according to actual needs.

[0048] AsFigure 6 As shown in the drawings, in the embodiment, the first sliding groove 51 of the adjusting plate 5 is provided with a positioning groove 53 between the mounting hole 52 thereof, and the second sliding groove 11 of the bottom rail 1 is correspondingly provided with a positioning protrusion 14 between the adjusting groove 12 thereof, the positioning protrusion 14 is arranged in the positioning groove 53, and when assembling, the positioning protrusion 14 can realize the function of quick positioning, so that the adjusting part 4 can be quickly and accurately positioned on the bottom rail 1, the installation steps are simplified, the installation time is reduced, and the installation efficiency is improved. In addition, the positioning protrusion 14 can slide along the positioning groove 53, and the positioning groove 53 can provide space for the movement of the adjusting part 4, so as to ensure that the adjusting part 4 cannot be adjusted due to the obstruction of the positioning protrusion 14 during the adjusting process, improve the flexibility and convenience of the adjusting, and also ensure the smooth progress of the adjusting process.

[0049] As shown in the drawings, Figure 4 , Figure 5 In the embodiment, the limiting block 44 and the adjusting tooth 41 of the adjusting part 4 protrude outward from the adjusting part 43, so that a limiting step is formed between the three, and when assembling, the limiting step can tightly abut the top surface of the adjusting block, so that the limiting block 44 and the adjusting tooth 41 are stably arranged in the adjusting groove 12 of the bottom rail 1, the positions of the limiting block 44 and the adjusting tooth 41 in the adjusting groove 12 are more definite, thereby reducing the error in the adjusting process, facilitating the adjusting part 4 to drive the adjusting plate 5 to move left and right for adjusting, and improving the adjusting precision.

[0050] In the embodiment, the axis of the base 42 of the adjusting part 4 is collinear with the axis of the adjusting part 43, so that the entire adjusting part 4 can maintain higher stability during movement, and at the same time, since the collinear axes reduce the friction and resistance caused by axis deviation or distortion, the adjusting part 4 can move or rotate more smoothly, so that the adjusting part 4 can more accurately reach the target position during movement or rotation, and the error caused by axis deviation is reduced.

[0051] As shown in the drawings, Figure 2 , Figure 3 In the embodiment, the door and window connecting assembly 2 includes a first connecting arm 21, a second connecting arm 22, and a supporting arm 23. The second connecting arm 22 is located above the bottom rail 1, the first connecting arm 21 is located above the second connecting arm 22, and the supporting arm 23 is located above the first connecting arm 21. One end of the first connecting arm 21 is hinged to the adjusting plate 5 through the hinge 3, the other end of the first connecting arm 21 is hinged to the supporting arm 23, one end of the second connecting arm 22 is hinged to the adjusting plate 5, and the other end of the second connecting arm 22 is hinged to the supporting arm 23. When it is necessary to open or close the door and window 7, the door and window 7 only needs to be pushed slightly, and the hinge 3 will slide in the first sliding groove 51 and the second sliding groove 11, thereby driving the first connecting arm 21 to move, so that the opening and closing process of the door and window 7 is more smooth.

[0052] As Figure 2 , Figure 3 shown, in this embodiment, the supporting arm 23 is provided with a third sliding groove 231, and the rivet is connected with the second connecting arm 22 through the third sliding groove, and the third sliding groove 231 is designed so that the second connecting arm 22 can move along the third sliding groove 231 on the supporting arm 23, when it is necessary to open or close the door and window 7, the user only needs to gently push the door and window 7, and the second connecting arm 22 will move along the third sliding groove 231, so that the opening and closing of the door and window 7 becomes easy and smooth. At the same time, due to the design of the third sliding groove 231 and the stable connection of the rivet, the door and window 7 always remain stable during movement, preventing the occurrence of shaking or derailment.

[0053] As Figures 7 to 11 shown, the door and window 7 is installed on the load-bearing arm, if the door and window 7 needs to be adjusted to the left, the adjusting part 4 is rotated counterclockwise, so that the adjusting part 4 drives the adjusting plate 5 to move to the left, and then the door and window connecting assembly 2 drives the door and window 7 to move to the left for adjustment; if the door and window 7 needs to be adjusted to the right, the adjusting part 4 is rotated clockwise, so that the adjusting part 4 drives the adjusting plate 5 to move to the right, and then the door and window connecting assembly 2 drives the door and window 7 to move to the right for adjustment.

[0054] It should be understood that those skilled in the art can make improvements or changes according to the above description, and all these improvements and changes shall belong to the protection scope of the appended claims of the utility model.

[0055] The above has described the utility model patent by way of example in combination with the drawings, and obviously the implementation of the utility model patent is not limited by the above manner, as long as various improvements are made by using the method concept and technical scheme of the utility model patent, or the concept and technical scheme of the utility model patent is directly applied to other occasions without improvement, all of which are within the protection scope of the utility model.

Claims

1. A lower hinge for improving adjustment accuracy, characterized by, The door and window connecting assembly is hinged to the hinge piece which passes through the first sliding groove and the second sliding groove of the bottom rail in sequence. The bottom rail is provided with an adjusting groove, the sidewall of the adjusting groove is provided with a plurality of tooth grooves which are arranged in an arc shape along the length of the adjusting groove, and the adjusting piece is provided with a plurality of adjusting teeth in correspondence. When the adjusting piece rotates, the door and window connecting assembly is moved left or right by the adjusting piece through the adjusting plate to adjust the left and right positions of the door and window.

2. The lower hinge for improving adjustment accuracy according to claim 1, wherein The adjusting piece includes a base and an adjusting portion connected to the base, the plurality of adjusting teeth are arranged on one side of the adjusting portion, and the other side of the adjusting portion is provided with a limiting block. When the adjusting piece rotates to a certain angle, the limiting block contacts the adjusting groove to limit the rotation angle of the adjusting piece.

3. The lower hinge for improving adjustment accuracy according to claim 2, wherein The top of the base is provided with a rotating adjusting hole to facilitate the rotation of the adjusting piece.

4. The lower hinge for improving adjustment accuracy according to claim 2, wherein The diameter of the base is greater than the groove width of the adjusting groove.

5. The lower hinge for improving adjustment accuracy according to claim 2, wherein The adjusting plate is provided with a mounting hole, and at least a portion of the adjusting portion is arranged in the mounting hole.

6. The lower hinge for improving adjustment accuracy according to claim 5, wherein The first sliding groove and the mounting hole are provided with a positioning groove, and the second sliding groove and the adjusting groove are provided with a positioning protrusion in correspondence, the positioning protrusion is arranged in the positioning groove, and the positioning protrusion can slide along the positioning groove.

7. The lower hinge for improving adjustment accuracy according to claim 2, wherein The limiting block and the adjusting teeth protrude outward from the adjusting portion to form a limiting step therebetween.

8. The lower hinge for improving adjustment accuracy according to claim 2, wherein The axis of the base is collinear with the axis of the adjusting portion.

9. The lower hinge for improving adjustment accuracy according to claim 1, wherein The number of adjusting teeth is equal to the number of tooth grooves.

10. The lower hinge for improving adjustment accuracy according to claim 1, wherein The door and window connecting assembly includes a first connecting arm, a second connecting arm, and a supporting arm, one end of the first connecting arm is hinged to the adjusting plate through the hinge piece, the other end of the first connecting arm is hinged to the supporting arm, one end of the second connecting arm is hinged to the adjusting plate, and the other end of the second connecting arm is hinged to the supporting arm.

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