Structure for adjusting friction force of hinge

Abstract

The utility model discloses a structure for adjusting the friction force of a hinge, which comprises a base, a short arm, a support arm, a long arm and a reinforcing arm, one end of the reinforcing arm is rotatably connected to the long arm, and the other end of the reinforcing arm is rotatably connected with a sliding friction block; the sliding friction block is connected to the base in a sliding mode, a sliding guide structure is arranged between the sliding friction block and the base, a mounting hole is formed in the sliding friction block, a guide hole is formed in the base, and an adjusting screw and an adjusting nut are arranged between the mounting hole and the guide hole. The adjusting screw sequentially penetrates through the mounting hole and the guide hole from top to bottom and is in threaded connection with the adjusting nut, and a limiting ring part which is blocked below the guide hole and can slide back and forth along the guide hole is arranged at the lower part of the adjusting nut. The device has the advantages of being simple in structure and easy to assemble, and friction force is easy to adjust.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window hinges, in particular to a structure for adjusting hinge friction. Background Art

[0002] Door and window hinges, also called sliding braces, are a common hardware accessory that connects doors and windows to frames. In the structure of the hinge, there is usually a connecting rod that can be rotated and connected to the base and can slide back and forth along the base.

[0003] In a conventional hinge, a strip hole is usually provided on the base, and double sliders are provided above and below the strip hole. The connecting rod is rotatably connected to the two sliders, and the two sliders are connected by rivets (the rivets are the hinge shafts between the connecting rod and the sliders).

[0004] However, this traditional hinge structure has some disadvantages. First, the large number of parts makes the hinge structure relatively complex, which not only increases the cost of production, but also makes the assembly process more cumbersome and time-consuming. During the assembly process, each component needs to be placed and fixed accurately, which requires relatively high skills of the assembly workers and increases the possibility of assembly errors.

[0005] In addition, the friction between the slider and the base is an important factor affecting the user experience of doors and windows. If the friction is too large, the doors and windows will feel resistance when opening and closing, making the operation less smooth; if the friction is too small, it may cause the doors and windows to be unstable when closed. It is usually difficult to adjust the friction in traditional hinge structures, which limits the product's performance and user experience.

[0006] Therefore, it is necessary to further improve and perfect the prior art to overcome these deficiencies, and the present invention is made based on this situation. Utility Model Content

[0007] The utility model aims to overcome the deficiencies of the prior art and provide a structure for adjusting the friction force of a hinge which has a simple structure, is easy to assemble and can adjust the friction force.

[0008] The utility model is realized through the following technical solutions:

[0009] In order to solve the above technical problems, the utility model provides a structure for adjusting the friction force of the hinge, comprising a base, a short arm, a support arm, a long arm and a reinforcing arm, one end of the short arm is rotatably connected to the front part of the base, the other end of the short arm is rotatably connected to the front part of the support arm, one end of the long arm is rotatably connected to the rear part of the support arm, the other end of the long arm is rotatably connected to the rear part of the base, one end of the reinforcing arm is rotatably connected to the long arm, and the other end of the reinforcing arm is rotatably connected to a sliding friction block;

[0010] The sliding friction block is slidably connected to the base along the front-to-back direction and a sliding guide structure is provided between the two. The sliding friction block is provided with a mounting hole, and the base is provided with strip-shaped guide holes arranged along the front-to-back direction. An adjusting screw and an adjusting nut for adjusting the friction force between the sliding friction block and the base are provided between the mounting hole and the guide hole. The adjusting screw passes through the mounting hole and the guide hole in sequence from top to bottom and is threadedly connected to the adjusting nut. A limiting ring portion is provided at the lower part of the adjusting nut to block under the guide hole and to be able to slide forward and backward along the guide hole.

[0011] In order to further solve the technical problem to be solved by the utility model, the utility model provides a structure for adjusting the friction force of a hinge, wherein the adjusting nut includes a columnar portion that can be inserted into a guide hole and a mounting hole from bottom to top in sequence, and a circumferential limiting structure for limiting the relative rotation between the columnar portion and the mounting hole is provided between the columnar portion and the mounting hole, and the limiting ring portion is arranged at the lower end of the columnar portion, and the columnar portion is provided with a threaded hole that runs through it from top to bottom and can cooperate with an adjusting screw.

[0012] In order to further solve the technical problem to be solved by the utility model, the utility model provides a structure for adjusting the hinge friction force, wherein the mounting hole is a polygonal hole, the column part is a polygonal column adapted to the mounting hole, and the column part is inserted into the mounting hole to form the circumferential limiting structure.

[0013] In order to further solve the technical problem to be solved by the utility model, the utility model provides a structure for adjusting the hinge friction force, wherein the sliding guide structure includes a guide rail provided on the base and arranged along the front-to-back direction, and a sliding groove provided on the sliding friction block and capable of cooperating with the guide rail.

[0014] In order to further solve the technical problem to be solved by the utility model, in a structure for adjusting hinge friction force provided by the utility model, the guide rail is a convex strip stamped on the sliding friction block and protruding upward.

[0015] In order to further solve the technical problem to be solved by the present invention, the present invention provides a structure for adjusting hinge friction, wherein the sliding friction block is an elastic plastic part.

[0016] In order to further solve the technical problem to be solved by the utility model, in a structure for adjusting hinge friction force provided by the utility model, the upper surface of the sliding friction block is provided with an avoidance groove arranged around the end of the reinforcing arm for avoiding burrs on the end of the reinforcing arm.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. The introduction of the adjusting screw and adjusting nut in the novel structure allows the user to adjust the magnitude of the friction force in a very fine and direct way. The user can fine-tune the contact pressure between the sliding friction block and the base by turning the adjusting screw, thereby accurately controlling the magnitude of the friction force. This adjustment method is more flexible than the traditional rivet method, and it is also more convenient for users to make quick adjustments according to different situations. Secondly, compared with the traditional double slider plus rivet structure, the utility model adopts a single slider, adjusting screw and adjusting nut structure, which greatly reduces the number of parts required for manufacturing, thereby reducing production costs and assembly time. In addition, compared with the double slider structure that requires precise docking of multiple parts, the single slider structure of the utility model simplifies the assembly process. This simple design not only improves production efficiency, but also reduces errors that may occur during installation or maintenance.

[0019] 2. In the utility model, the use of a specially made adjusting nut and an adjusting screw together constitutes an efficient and precise friction adjustment mechanism, while having the characteristic of easy installation. That is, the adjusting nut has a columnar portion that can be inserted into the guide hole and the mounting hole from bottom to top in sequence, which is convenient for quick installation and adjustment. A limiting ring portion is provided at the lower end of the columnar portion to prevent the nut from excessively moving in the vertical direction. The columnar portion is provided with a threaded hole that runs through it from top to bottom and can cooperate with the adjusting screw. By rotating the adjusting screw, the relative distance between the screw and the nut is changed, thereby adjusting the contact pressure between the sliding friction block sandwiched between the screw and the nut and the base, thereby achieving the effect of adjusting the friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1 This is a three-dimensional structure diagram of the utility model. Figure 1 ;

[0022] Figure 2 This is a three-dimensional structure diagram of the utility model. Figure 2 ;

[0023] Figure 3 It is an explosion schematic diagram of the utility model;

[0024] Figure 4 yes Figure 3 A partial enlarged view of the middle part;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the sliding friction block. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] like Figures 1 to 5 A structure for adjusting hinge friction force shown in the figure comprises a base 1, a short arm 2, a support arm 3, a long arm 4 and a reinforcing arm 5. The base 1 is usually fixedly mounted on the door and window frame, and the support arm 3 is usually used to install the window sash. The base 1, the short arm 2, the support arm 3 and the long arm 4 form a four-bar structure, that is, one end of the short arm 2 is rotatably connected to the front of the base 1, the other end of the short arm 2 is rotatably connected to the front of the support arm 3, one end of the long arm 4 is rotatably connected to the rear of the support arm 3, and the other end of the long arm 4 is rotatably connected to the rear of the base 1.

[0028] The reinforcing arm 5 is used to increase the structural strength of the hinge. One end of the reinforcing arm 5 is rotatably connected to the long arm 4, and the other end of the reinforcing arm 5 is rotatably connected to a sliding friction block 6.

[0029] The sliding friction block 6 is a key innovation in the present structure. It is connected to the other end of the reinforcing arm 5 by rotation and is slidably arranged on the base 1, that is, it can slide in the front-back direction. This design allows the user to adjust the friction force as needed to optimize the opening and closing force and stability of the door and window.

[0030] The sliding friction block 6 is slidably connected to the base 1 along the front-to-back direction, and a sliding guide structure is provided between the two. The sliding friction block 6 is provided with a mounting hole 61, and the base 1 is provided with a strip-shaped guide hole 11 extending along the front-to-back direction. An adjustment screw 7 and an adjustment nut 8 for adjusting the friction force between the sliding friction block 6 and the base 1 are provided between the mounting hole 61 and the guide hole 11. The adjustment screw 7 passes through the mounting hole 61 and the guide hole 11 in sequence from top to bottom and is threadedly connected with the adjustment nut 8. A limiting ring portion 82 is provided at the lower part of the adjustment nut 8, and the limiting ring portion 82 is blocked below the guide hole 11 and can slide forward and backward along the guide hole 11.

[0031] The ingenious design of the adjusting screw 7 and the adjusting nut 8 between the mounting hole 61 on the sliding friction block 6 and the guide hole 11 on the base 1 makes the adjustment process simple and accurate. The adjusting screw 7 can pass through the mounting hole 61 and the guide hole 11 and be threadedly connected with the adjusting nut 8. Rotating the adjusting screw 7 can increase or decrease the friction between the sliding friction block 6 and the base 1, thereby achieving a fine adjustment of the movement resistance of the door and window.

[0032] Compared with the traditional double slider plus rivet structure, the utility model adopts the structure of a single slider, an adjusting screw 7 and an adjusting nut 8, which greatly reduces the number of parts required for manufacturing, thereby reducing production costs and assembly time.

[0033] Secondly, compared with the double slider structure that requires precise docking of multiple parts, the single slider structure of the utility model simplifies the assembly process. This simple design not only improves production efficiency, but also reduces possible errors during installation or maintenance.

[0034] In addition, the introduction of the adjusting screw 7 and the adjusting nut 8 in the novel structure allows the user to adjust the magnitude of the friction force in a very fine and direct way. The user can fine-tune the contact pressure between the sliding friction block 6 and the base 1 by turning the adjusting screw 7, thereby accurately controlling the magnitude of the friction force. This adjustment method is more flexible than the traditional rivet method, and is also more convenient for users to quickly adjust according to different situations.

[0035] Finally, due to the simplified structure, maintenance and replacement of parts become faster and more convenient. When it is necessary to adjust the friction force or replace the worn parts, the user does not need to disassemble multiple parts, but only needs to simply adjust or replace the sliding friction block 6, the adjusting screw 7 or the nut 8.

[0036] This design greatly simplifies the assembly and friction adjustment process of door and window hinges, making it easier for users to quickly set them up according to actual needs. Through this innovative adjustment mechanism, not only the performance and safety of doors and windows are improved, but also the overall product quality and user satisfaction are improved.

[0037] More specifically, the adjusting nut 8 of the present invention is a special nut, which, together with the adjusting screw 7, forms an efficient and precise friction adjustment mechanism. That is, the adjusting nut 8 includes a columnar portion 81 that can be inserted into the guide hole 11 and the mounting hole 61 from bottom to top. The design of the columnar portion 81 allows the adjusting nut 8 to be easily inserted into the guide hole 11 and the mounting hole 61 from the bottom without the need for a complicated installation process.

[0038] The limiting ring portion 82 is arranged at the lower end of the column portion 81. The diameter of this ring structure is slightly larger than the guide hole 11, so that the adjusting nut 8 can find a support point below the guide hole 11 after being inserted, thereby preventing the entire nut from excessively moving in the vertical direction.

[0039] The column part 81 is provided with a threaded hole 83 which runs through the column part 81 and can cooperate with the adjusting screw 7. When the user rotates the adjusting screw 7, this action causes the adjusting screw 7 to move up and down along the threaded hole which cooperates with the adjusting nut 8. This movement actually changes the relative distance between the adjusting screw 7 and the adjusting nut 8, thereby affecting the contact pressure between the sliding friction block 6 and the base 1 sandwiched between the adjusting screw 7 and the adjusting nut 8. When the adjusting screw 7 rotates downward, that is, approaches the adjusting nut 8, it pushes the sliding friction block 6 to apply greater pressure to the base 1, thereby increasing the friction between the two; on the contrary, when the adjusting screw 7 rotates upward, that is, moves away from the adjusting nut 8, the pressure on the sliding friction block 6 is reduced, resulting in a reduction in the friction between the base 1.

[0040] It is worth noting that the threaded hole 83 is designed as a through hole, which means that the lower end of the adjusting screw 7 can not only be screwed into the hole, but also penetrate out, which greatly enhances the adjustment range and flexibility of the adjusting screw 7.

[0041] More specifically, a circumferential limiting structure is provided between the column portion 81 and the mounting hole 61 to limit the relative rotation of the two. Specifically, the mounting hole 61 is a polygonal hole, the column portion 81 is a polygonal column adapted to the mounting hole 61, and the column portion 81 is inserted into the mounting hole 61 to form the circumferential limiting structure. This design is intended to improve the stability of the entire adjustment mechanism and the accuracy of use. In specific operation, when the user rotates the adjustment screw 7 to adjust the friction force, the cooperation between the column portion 81 and the mounting hole 61 ensures that the adjustment nut 8 remains fixed. This mechanical interlocking design allows the adjustment screw 7 to rotate alone without driving the adjustment nut 8, thereby avoiding inaccurate adjustment or overly complicated adjustment steps caused by the nut rotating with the screw.

[0042] The stability of the adjusting nut 8 also means that any rotation adjustment of the adjusting screw 7 will directly translate into a change in the distance between the adjusting screw 7 and the adjusting nut 8. This direct distance change allows the pressure on the sliding friction block 6 to be adjusted very accurately, thereby achieving precise control of the friction force.

[0043] More specifically, it is mentioned above that a sliding guide structure is provided between the sliding friction block 6 and the base 1. The sliding guide structure between the sliding friction block 6 and the base 1 plays a key stabilizing role, ensuring the accuracy of the sliding friction block during movement. Specifically, the guide rail 12 is arranged on the base 1, and its structure extends in the front-to-back direction, which can provide a stable guiding surface, so that the sliding friction block 6 can maintain the correct path during movement, avoid shaking left and right, and ensure the smooth and straight sliding of the friction block.

[0044] The slide groove 62 is a matching structure on the sliding friction block 6, and cooperates with the guide rail 12. The slide groove 62 is designed to closely fit the shape of the guide rail 12, and there is a suitable matching gap between the inner wall of the slide groove 62 and the outer wall of the guide rail 12, so that the sliding friction block 6 can slide smoothly on the guide rail 12, while avoiding excessive friction resistance during movement.

[0045] As for the guide rail 12 itself, it is preferably in the shape of a convex strip made directly on the sliding friction block 6 by a stamping process. The stamping process also means that the guide rail is integrally formed with the sliding friction block, which can increase the strength and durability of the entire structure. In addition, the use of the stamped guide rail 12 not only saves the use of additional materials, reduces the number of parts, but also simplifies the assembly process, which has significant economic benefits in production and maintenance.

[0046] In general, the design of this structure not only realizes the stable movement of the sliding friction block, but also optimizes the production and use costs, reflecting the comprehensive consideration of efficiency and function.

[0047] More specifically, the sliding friction block 6 is a plastic part with elasticity. The selection of this material not only takes into account its wear resistance and durability, but also takes into account the elasticity.

[0048] More specifically, the upper surface of the sliding friction block 6 is provided with an avoidance groove 63 arranged around the end of the reinforcing arm 5, which is used to avoid burrs at the end of the reinforcing arm 5. The avoidance groove 63 is provided to solve the problem of processing burrs that may exist at the end of the reinforcing arm 5. Burrs are small protrusions that are common in the metal processing process. If they are not handled, they may hinder the rotational movement of the reinforcing arm 5 and scratch the sliding friction block 6, affecting the smooth operation of the entire mechanical system. Therefore, reserving an avoidance groove 63 of a specific shape on the sliding friction block 6 can ensure that even if there are tiny burrs on the reinforcing arm 5, it will not interfere with the relative movement of the two, thereby improving the durability and reliability of the entire system.

Claims

1. A structure for adjusting hinge friction, characterized in that: The invention comprises a base (1), a short arm (2), a support arm (3), a long arm (4) and a reinforcing arm (5), wherein one end of the short arm (2) is rotatably connected to the front part of the base (1), the other end of the short arm (2) is rotatably connected to the front part of the support arm (3), one end of the long arm (4) is rotatably connected to the rear part of the support arm (3), the other end of the long arm (4) is rotatably connected to the rear part of the base (1), one end of the reinforcing arm (5) is rotatably connected to the long arm (4), and the other end of the reinforcing arm (5) is rotatably connected to a sliding friction block (6); The sliding friction block (6) is slidably connected to the base (1) along the front-to-back direction and a sliding guide structure is provided between the two. The sliding friction block (6) is provided with a mounting hole (61), and the base (1) is provided with a strip-shaped guide hole (11) arranged along the front-to-back direction. An adjusting screw (7) and an adjusting nut (8) for adjusting the friction force between the sliding friction block (6) and the base (1) are provided between the mounting hole (61) and the guide hole (11). The adjusting screw (7) passes through the mounting hole (61) and the guide hole (11) in sequence from top to bottom and is threadedly connected to the adjusting nut (8). The lower part of the adjusting nut (8) is provided with a limiting ring part (82) which blocks below the guide hole (11) and can slide forward and backward along the guide hole (11).

2. The structure for adjusting hinge friction according to claim 1, characterized in that: The adjusting nut (8) comprises a columnar portion (81) which can be inserted into the guide hole (11) and the mounting hole (61) in sequence from bottom to top, a circumferential limiting structure for limiting the relative rotation of the columnar portion (81) and the mounting hole (61) is provided between the columnar portion (81) and the mounting hole (61), the limiting ring portion (82) is arranged at the lower end of the columnar portion (81), and a threaded hole (83) is provided on the columnar portion (81) which runs through the columnar portion (81) and can cooperate with the adjusting screw (7).

3. The structure for adjusting hinge friction according to claim 2, characterized in that: The mounting hole (61) is a polygonal hole, the column portion (81) is a polygonal column adapted to the mounting hole (61), and the column portion (81) is inserted into the mounting hole (61) to form the circumferential limiting structure.

4. The structure for adjusting hinge friction according to claim 1, characterized in that: The sliding guide structure comprises a guide rail (12) provided on the base (1) and arranged along the front-rear direction, and a slide groove (62) provided on the sliding friction block (6) and capable of cooperating with the guide rail (12).

5. The structure for adjusting hinge friction according to claim 4, characterized in that: The guide rail (12) is a convex strip that is punched on the sliding friction block (6) and protrudes upward.

6. The structure for adjusting hinge friction according to claim 1, characterized in that: The sliding friction block (6) is an elastic plastic part.

7. The structure for adjusting hinge friction according to claim 1, characterized in that: The upper surface of the sliding friction block (6) is provided with an avoidance groove (63) arranged around the end of the reinforcing arm (5) for avoiding burrs on the end of the reinforcing arm (5).

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