A cabinet door pulley assembly adjusting screw

Abstract

A cabinet door pulley assembly adjusting bolt, it includes the stud body, is provided with the outer thread on the outer column surface of stud body, is also provided with the first positioning ring and the second positioning ring on the column surface of stud body, one end face of stud body is provided with the screw head. The beneficial effects of the utility model are: the first positioning ring and the second positioning ring are arranged on the column surface of the stud body to be axially clamped and positioned. This design makes the screw head part not need to be covered or deeply embedded, can be directly exposed, and the operator uses the tool to adjust conveniently. Thus, the adjusting step is greatly simplified, and the operation convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of hardware accessories technology, specifically a cabinet door pulley assembly adjustment bolt. Background Technology

[0002] In existing hardware accessories, where relative displacement adjustment of components is required, such as adjusting the height or position of cabinet door pulley assemblies, the method of using an adjusting screw and nut is mostly adopted. This adjustment method achieves the purpose of adjusting the position by rotating the adjusting screw, causing it to move axially within the nut.

[0003] However, in traditional adjusting screw structures, to ensure the stability and reliability of adjustment, axial positioning of the adjusting screw is usually required to prevent unnecessary axial movement during adjustment or under stress. A common axial positioning method in existing technology is to lock the screw head in place. This locking structure allows the screw body to rotate around its axis, thereby causing axial displacement of the threaded portion, but simultaneously restricts the axial movement of the screw head itself.

[0004] This traditional locking structure has significant drawbacks: 1. To secure the screw head, it is usually necessary to cover or embed it into a specific mounting hole during installation. This makes it difficult for the operator to directly access or observe the screw head during actual adjustment, increasing the difficulty and inconvenience of the adjustment.

[0005] 2. Because the screw head is covered or embedded, the space for adjusting tools (such as wrenches and screwdrivers) is limited, making the adjustment process cumbersome, requiring more time and effort, and reducing adjustment efficiency. This problem is particularly prominent when adjusting in confined spaces. 3. This snap-on cover design limits the choice of screw head shape and size, which restricts the product's appearance design and functional integration. Therefore, it is necessary to make further improvements. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a cabinet door pulley block adjusting bolt that has a more compact structure, can achieve reliable axial positioning, simplifies adjustment operations, improves adjustment efficiency, and provides greater flexibility for product design.

[0007] The purpose of this utility model is achieved by the following means: a cabinet door pulley assembly adjusting bolt, which includes a stud body, an external thread provided on the outer cylindrical surface of the stud body, a first positioning ring and a second positioning ring provided on the cylindrical surface of the stud body, and a screw head provided on one end face of the stud body.

[0008] Furthermore, the screw head is an internal hexagon screw head.

[0009] Furthermore: the screw head is an external hexagonal screw head.

[0010] Furthermore, the screw head is a cross-groove screw head.

[0011] Furthermore, the screw head is a slotted screw head.

[0012] Furthermore, the width of the first positioning ring and the second positioning ring is 3mm to 5mm.

[0013] Furthermore, the depth of the first positioning ring and the second positioning ring is 2mm to 4mm.

[0014] The beneficial effects of this utility model are: 1. Simple structure, low production cost, and improved market competitiveness.

[0015] 2. This utility model features a first positioning ring and a second positioning ring on the cylindrical surface of the stud body for axial locking and positioning. This design eliminates the need for the screw head to be covered or deeply embedded, allowing it to be directly exposed and easily adjusted by the operator using tools. This significantly simplifies the adjustment process and improves operational convenience. 3. Because the screw head is exposed, the adjustment tool can be more conveniently and quickly matched with the screw head, saving the time spent searching, aligning or clearing obstacles when the screw head is covered in the traditional structure. This significantly improves the efficiency of adjustment, and is especially suitable for occasions that require frequent adjustment or adjustment in confined spaces.

[0016] 4. This utility model employs a dual positioning structure consisting of a first positioning ring and a second positioning ring. Compared to a single positioning structure, the two positioning rings not only provide more reliable axial restraint, but more importantly, they increase the contact area between the adjusting bolt and the mating parts. This results in a larger force-bearing area for the adjusting bolt when subjected to axial or radial loads, thereby effectively improving the overall load-bearing capacity of the adjusting bolt. Simultaneously, the double-ring positioning structure better resists lateral forces or vibrations, ensuring the adjusting bolt maintains stronger structural stability and reliability during long-term use. Attached Figure Description

[0017] Figure 1 , 2 This is a diagram illustrating the effect of assembling and using this utility model with a cabinet door pulley assembly.

[0018] Figure 3 , 4 This is a schematic diagram of the structure of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Stud; 2. External thread; 3. First positioning ring; 4. Second positioning ring; 5. Screw head; 84. Height adjustment seat; 841. Base plate; 8410. Limiting groove; 8411. Snap plate; 842. Horizontal movement plate; 8421. Screw plate; 845. Height adjustment plate. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings. A cabinet door pulley assembly adjusting bolt includes a stud body 1, an external thread 2 provided on the outer cylindrical surface of the stud body 1, a first positioning ring 3 and a second positioning ring 4 provided on the cylindrical surface of the stud body 1, and a screw head 5 provided on one end face of the stud body 1.

[0021] In this embodiment: the stud 1 is the main body of the bolt, and the external thread 2 on its outer cylindrical surface is designed to engage with a mating part. The rotational movement of the thread converts the bolt into axial linear movement, thereby achieving position adjustment. The first positioning ring 3 and the second positioning ring 4 provided on the stud 1 are one of the core features of this utility model. During installation, they engage with the slots or holes on the mating part to provide axial positioning of the bolt, ensuring that the bolt does not experience overall axial movement during adjustment and stabilizing its position. The screw head 5 at one end of the stud 1 is the interface for the operator to apply torque, used to drive the bolt to rotate, thereby achieving the adjustment function.

[0022] In this embodiment, an independent positioning ring is introduced on the stud body, which lays the foundation for convenient operation by exposing the screw head 5, and overcomes the shortcomings of traditional bolts that rely on covering the screw head for axial positioning.

[0023] In one embodiment: the screw head 5 is an internal hexagon screw head.

[0024] When the screw head 5 adopts an internal hexagonal structure, the operator can use an internal hexagonal wrench to insert into the hexagonal slot inside the screw head for rotation. This connection method transmits torque through multiple contact surfaces, enabling the rotational torque to be efficiently and stably transmitted to the bolt.

[0025] The screw head 5 is an external hexagonal screw head.

[0026] When the screw head 5 adopts an external hexagonal structure, the operator can use tools such as open-end wrenches, box wrenches, or socket wrenches to rotate it by placing them on the hexagonal surface of the screw head. Among them, the external hexagonal screw head is one of the most common bolt head types in industry, and there are many types of tools that can be used with it, making them easy to obtain and use.

[0027] In one embodiment: the screw head 5 is a cross-groove screw head.

[0028] When the screw head 5 adopts a cross-groove structure, the operator can use a cross-groove screwdriver to insert into the cross-shaped groove on the screw head for rotation.

[0029] In one embodiment: the screw head 5 is a slotted screw head.

[0030] When the screw head 5 adopts a slotted design, the operator can use a slotted screwdriver to insert into the straight groove on the screw head for rotation.

[0031] In one embodiment, the width of the first positioning ring 3 and the second positioning ring 4 is 3mm to 5mm.

[0032] In this embodiment, the widths of the first positioning ring 3 and the second positioning ring 4 directly affect their contact area with the mating parts. When the width is set within the range of 3mm to 5mm, it ensures that the positioning rings provide stable axial support while having sufficient contact area to distribute the force and avoid stress concentration. A width that is too narrow may cause the positioning rings to wear easily or provide insufficient support, while a width that is too wide may increase material consumption and manufacturing difficulty, and may interfere with surrounding components.

[0033] In one embodiment, the depth of the first positioning ring 3 and the second positioning ring 4 is 2mm to 4mm.

[0034] In this embodiment, the depths of the first positioning ring 3 and the second positioning ring 4 determine the degree of engagement and structural thickness between the positioning rings and the mating parts. A depth range of 2mm to 4mm ensures that the positioning rings have sufficient wall thickness and strength to withstand the pressure during engagement and under stress without easily deforming or breaking. Simultaneously, the appropriate depth also ensures that the positioning rings and the mating parts can reliably mesh, providing a stable axial positioning effect.

[0035] In summary, the cabinet door pulley assembly adjustment bolt provided by this utility model aims to achieve precise and convenient adjustment of the cabinet door pulley assembly through an innovative and efficient axial positioning method.

[0036] In this case, we will take the use of the adjusting bolt in the cabinet door pulley assembly as an example for illustration. For example... Figure 1 , 2 As shown: The cabinet door pulley assembly is equipped with a height adjustment seat 84, which includes a horizontal sliding plate 842, which is stacked on the base plate 841. Several horizontal sliding grooves 843 on the plate cooperate with the horizontal guide rivets 844 passing through them to ensure that the horizontal sliding plate 842 can only move horizontally on the base plate 841 and to prevent it from falling off.

[0037] The stud 1 in this adjusting bolt is screwed and fixed to the screw plates 8421 on both sides of the transverse plate 842 via external threads 2. The first positioning ring 3 and the second positioning ring 4 on the bolt's cylindrical surface are engaged by the limiting grooves 8410 on the snap-fit ​​plates 8411 on both sides of the base plate 841. When the screw head 5 is manually rotated, since the first positioning ring 3 and the second positioning ring 4 are axially fixed within the limiting grooves 8410, the stud 1, while rotating, forces the transverse plate 842 screwed to it to move laterally relative to the base plate 841 through the thread action. As a result, the door body connected to the transverse plate 842 also moves precisely laterally via the height adjustment plate 845, achieving lateral position adjustment.

[0038] One key point to note is that traditional adjusting bolts are often secured by covering the bolt head to prevent axial movement during adjustment or use. However, this invention abandons this inconvenient design and instead features a first positioning ring 3 and a second positioning ring 4 independently mounted on the cylindrical surface of the bolt body 1. During installation, these two positioning rings precisely engage with the limiting groove 8410. This double positioning ring design effectively fixes the bolt axially in the working position, allowing the bolt to rotate on its own axis for adjustment, but restricting its overall movement along the axis.

[0039] Meanwhile, the significant advantages brought by the dual locating rings are multifaceted: for example, the complete exposure of the screw head 5 allows the operator to directly and conveniently use tools to rotate and adjust the bolt. This greatly simplifies the adjustment process, reduces operation time and difficulty, and its efficiency is particularly outstanding in situations where space is limited or frequent fine-tuning is required.

[0040] Meanwhile, the presence of the first positioning ring 3 and the second positioning ring 4 effectively provides two independent axial support points. This dual-point support structure increases the contact area between the bolt and the mating parts, resulting in a more uniform stress distribution when the bolt bears the weight of the cabinet door or lateral forces, avoiding stress concentration that might occur with single-point support. This significantly improves the load-bearing capacity and structural stability of the entire adjusting bolt system. Even under long-term use or vibration and impact, it can maintain the accuracy and reliability of its adjustment position.

[0041] In summary, this utility model, by innovatively setting a double positioning ring on the stud body, decouples the axial positioning function from the screw head operation function, thereby greatly improving the convenience and efficiency of the adjustment operation. At the same time, it significantly enhances the load-bearing capacity and stability of the adjusting bolt, providing a superior solution for the adjustment of the cabinet door pulley block.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A cabinet door pulley assembly adjusting bolt, characterized in that: It includes a stud body (1), an external thread (2) is provided on the outer cylindrical surface of the stud body (1), a first positioning ring (3) and a second positioning ring (4) are also provided on the cylindrical surface of the stud body (1), and a screw head (5) is provided on one end face of the stud body (1).

2. The cabinet door pulley assembly adjusting bolt according to claim 1, characterized in that: The screw head (5) is an internal hexagon screw head.

3. The cabinet door pulley assembly adjusting bolt according to claim 1, characterized in that: The screw head (5) is an external hexagonal screw head.

4. The cabinet door pulley assembly adjusting bolt according to claim 1, characterized in that: The screw head (5) is a cross-groove screw head.

5. The cabinet door pulley assembly adjusting bolt according to claim 1, characterized in that: The screw head (5) is a slotted screw head.

6. The cabinet door pulley assembly adjusting bolt according to claim 1, characterized in that: The width of the first positioning ring (3) and the second positioning ring (4) is 3mm-5mm.

7. The cabinet door pulley assembly adjusting bolt according to claim 1, characterized in that: The depth of the first positioning ring (3) and the second positioning ring (4) is 2mm-4mm.

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