Structure convenient for centering installation
By using an auxiliary component with a coaxial design between the insert and the through hole, the problems of concentricity and coaxiality difference between the insert and the through hole are solved, achieving efficient and precise assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-03-06
AI Technical Summary
In mechanical assembly, when assembling components with gaps, the concentricity and coaxiality of the insert and through hole are different, making it difficult to guarantee precise fit and assembly consistency.
Auxiliary components such as guide sleeves and constraint sleeves are used, and their coaxial design contacts the insertion rod and through hole to improve concentricity and coaxiality, assisting the insertion rod in accurately inserting into the through hole and simplifying the assembly process.
It significantly improves the concentricity and coaxiality of the insert and through hole, reduces manual errors, simplifies assembly steps, and improves assembly accuracy and efficiency.
Smart Images

Figure CN223971628U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mechanical assembly technology, and in particular relates to a structure that facilitates centering and installation. Background Technology
[0002] In mechanical assembly, it is often necessary to assemble two parts with gaps together, such as... Figure 1 As shown, the base has a through hole in the middle, and a rod is installed inside the through hole. The rod is then fixed to the base with bolts. Since the diameter of the rod is smaller than the diameter of the through hole, the installation position is constrained by bolts alone during assembly. The concentricity between the through hole and the rod is poor, which not only affects the precise fit between the components, but also makes it difficult to fully guarantee the consistency of the overall assembly. Utility Model Content
[0003] The purpose of this utility model is to provide a structure that facilitates centering and installation, so as to solve the technical problems mentioned in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A structure for easy centering and installation includes: a base, a plug rod, an auxiliary component, and bolts; the base has a vertical through hole in the middle, the auxiliary component is disposed inside the through hole, the plug rod is disposed inside the auxiliary component, and the upper part of the plug rod is detachably connected to the base by bolts;
[0006] The outer wall of the auxiliary component contacts and is coaxial with the inner wall of the through hole, and the inner wall of the auxiliary component contacts and is coaxial with the outer wall of the insertion rod.
[0007] As a further improvement of this utility model, the auxiliary component includes a guide sleeve with a circular cross-section. The outer wall of the guide sleeve contacts and is coaxial with the interior of the through hole, and the inner wall contacts and is coaxial with the outer wall of the insertion rod.
[0008] As a further improvement of this utility model, a constraint sleeve is provided on the outside of the guide sleeve, which is coaxial with it. The inner wall of the constraint sleeve contacts and is coaxial with the outer wall of the base.
[0009] As a further improvement of this utility model, the bottom of the guide sleeve is connected to the bottom of the constraint sleeve, and the upper part of the connection is in contact with the lower part of the base.
[0010] As a further improvement of this utility model, the insertion rod includes a vertical rod and a horizontal part connected to the vertical rod. The vertical rod is located inside the auxiliary component, and the bottom of the horizontal part contacts the upper part of the base. The horizontal part is detachably connected to the base by bolts.
[0011] As a further improvement of this utility model, at least two bolts are arranged symmetrically about the center of the through hole.
[0012] The beneficial effects of adopting the above technical solution are as follows:
[0013] This invention inserts an auxiliary component into the gap between the through hole and the insertion rod, which can significantly improve the concentricity and coaxiality between the insertion rod and the through hole. Through the guiding effect of the auxiliary component, the insertion rod can be inserted into the through hole more accurately, reducing errors caused by manual operation and thus improving assembly precision. Using the auxiliary component simplifies the assembly process and reduces assembly steps. Without the auxiliary component, relying solely on bolts to constrain the installation position requires multiple adjustments and calibrations, which is time-consuming and labor-intensive. The auxiliary component can quickly guide the insertion rod into the through hole, improving assembly efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of existing technology;
[0015] Figure 2 This is a cross-sectional view of Embodiment 1 of the present invention;
[0016] Figure 3 This is a cross-sectional view of Embodiment 2 of the present invention;
[0017] The markings in the diagram are as follows: 1. Base, 2. Insert rod, 2-1. Vertical rod, 2-2. Horizontal part, 3. Bolt, 4. Through hole, 5. Guide sleeve, 6. Constraint sleeve. Detailed Implementation
[0018] To better understand the purpose, structure, and function of this utility model, a clear and complete description of this utility model will be provided below in conjunction with the accompanying drawings.
[0019] Example 1
[0020] like Figure 2 The diagram illustrates a structure for easy alignment and installation, comprising: a base 1, a insertion rod 2, an auxiliary component, and bolts 3. The base 1 has a vertical through-hole 4 in its center. The auxiliary component is disposed inside the through-hole 4, its outer wall being circular and coaxial with the inner wall of the through-hole 4. The insertion rod 2 is disposed inside the auxiliary component, its inner wall also being circular and coaxial with the outer wall of the insertion rod 2. The upper part of the insertion rod 2 is detachably connected to the base 1 via bolts 3. Inserting the auxiliary component into the gap between the through-hole 4 and the insertion rod 2 significantly improves the concentricity and coaxiality between them. Through the guiding effect of the auxiliary component, the insertion rod 2 can be inserted more precisely into the through-hole 4, reducing errors caused by manual operation and thus improving assembly accuracy.
[0021] During assembly, first insert the auxiliary component into the through hole 4. Since the auxiliary component and the through hole 4 are well concentric, the center position of the base 1 can be constrained. Then insert the insertion rod 2. Since the auxiliary component and the insertion rod 2 are well concentric, the center position of the insertion rod 2 can also be constrained. After that, install the bolt 3 on the insertion rod 2 and the base 1 to fix the position of the insertion rod 2. Finally, pull the auxiliary component out from between the through hole 4 and the insertion rod 2 to complete and realize the centering installation of the base 1 and the insertion rod 2.
[0022] Using auxiliary parts can simplify the assembly process and reduce assembly steps. Without auxiliary parts, the installation position is constrained by bolts 3 alone, which requires multiple adjustments and calibrations, which is time-consuming and labor-intensive. Auxiliary parts can quickly guide the insert rod 2 into the through hole 4, improving assembly efficiency.
[0023] Furthermore, the insertion rod 2 includes a vertical rod 2-1 and a horizontal portion 2-2 connected to the vertical rod 2-1. The vertical rod 2-1 is located inside the auxiliary component, and the bottom of the horizontal portion 2-2 contacts the upper part of the base 1. The horizontal portion 2-2 is detachably connected to the base 1 by bolts 3. To increase the stability between the insertion rod 2 and the base 1, at least two bolts 3 are symmetrically arranged around the center of the through hole 4.
[0024] In this embodiment, the auxiliary component includes a guide sleeve 5 with a circular cross-section. The outer wall of the guide sleeve 5 contacts and is coaxial with the interior of the through hole 4, and the inner wall contacts and is coaxial with the outer wall of the insertion rod 2. The size of the guide sleeve 5 is determined according to actual usage requirements. In practice, the concentricity of the insertion rod 2 and the base 1 is affected by three factors: the concentricity of the guide sleeve 5 itself, the gap between the outer wall of the guide sleeve 5 and the through hole 4 of the base 1, and the gap between the inner wall of the guide sleeve 5 and the outer wall of the insertion rod 2. The error range of these three factors can be adjusted according to different requirements in actual applications.
[0025] Example 2
[0026] In Embodiment 2, the same symbols are used for the same structures as in Embodiment 1, and the same descriptions are omitted. The only difference between Embodiment 2 and Embodiment 1 is the structure of the auxiliary components.
[0027] like Figure 3 As shown, in this embodiment, a constraint sleeve 6 coaxially arranged on the outside of the guide sleeve 5 is provided. The inner wall of the constraint sleeve 6 is circular and contacts and is coaxial with the outer wall of the base 1. The auxiliary component is designed as a two-stage inner hole, specifically for cases where the outer wall of the base 1 is circular, to also constrain the outer wall of the base 1 to meet the purpose of centering constraint and also meet the centering installation requirements.
[0028] Furthermore, the bottom of the guide sleeve 5 is connected to the bottom of the constraint sleeve 6, and the upper part of the connection is in contact with the lower part of the base 1. That is, the guide sleeve 5 and the constraint sleeve 6 are a whole, reducing the occurrence of loss.
[0029] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A structure for facilitating plumb installation, characterized by: It includes: Base (1), plug rod (2), auxiliary and bolt (3); the middle part of the base (1) is provided with a vertical through hole (4), the inside of the through hole (4) is provided with the auxiliary, the inside of the auxiliary is provided with the plug rod (2), the upper part of the plug rod (2) is detachably connected with the base (1) through the bolt (3); The outer wall of the auxiliary is in contact with and coaxial with the inner wall of the through hole (4), and the inner wall of the auxiliary is in contact with and coaxial with the outer wall of the plug rod (2).
2. A self-centering mountable structure according to claim 1, characterized in that: The auxiliary includes a guide sleeve (5) with a circular cross section, the outer wall of the guide sleeve (5) is in contact with and coaxial with the inside of the through hole (4), and the inner wall is in contact with and coaxial with the outer wall of the plug rod (2).
3. A self-centering mountable structure according to claim 2, wherein: The outside of the guide sleeve (5) is provided with a constraint sleeve (6) coaxial therewith, and the inner wall of the constraint sleeve (6) is in contact with and coaxial with the outer wall of the base (1).
4. A self-centering mountable structure according to claim 3, wherein: The bottom of the guide sleeve (5) is connected with the bottom of the constraint sleeve (6), and the upper part of the connection part is in contact with the lower part of the base (1).
5. A self-centering mountable structure according to claim 1, wherein: The plug rod (2) includes a vertical rod (2-1) and a horizontal part (2-2) connected with the vertical rod (2-1), the vertical rod (2-1) is located in the inside of the auxiliary, the bottom of the horizontal part (2-2) is in contact with the upper part of the base (1), and the horizontal part (2-2) is detachably connected with the base (1) through the bolt (3).
6. A self-centering mountable structure according to claim 1, wherein: The bolt (3) is symmetrically arranged at least two with the center of the through hole (4) as the axis.