Positioning end wedging bolt
The unified screw design with a nylon damping rod and reverse thread configuration addresses washer damage issues in high-precision applications, ensuring stable fastening and easy disassembly.
Patent Information
- Application Number
- CN202422511316.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-10-17
AI Technical Summary
Traditional bolt connection methods are prone to damage the gasket when tightening the nut, resulting in unstable connection and difficult to meet the needs of high-precision assembly.
A positioning end wedge bolt is designed, using an integral structure of the bolt head and forward screw, with a nylon damping rod and a reverse screw. The tightening and matching of the nylon damping rod with the nut is combined with the design of the protective shell and the soft rod to achieve a stable connection and prevent the bolt head from rusting.
The nut connection is made more tight, preventing the gasket from damage, ensuring connection stability, and easy disassembly through the design of the reverse screw to avoid rust on the bolt head. It is suitable for high-precision mechanical assembly.
Smart Images
Figure CN223105012U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bolts, in particular to a positioning end wedging bolt. Background Art
[0002] A bolt is a mechanical connecting piece, usually composed of a head and a screw rod. In mechanical manufacturing, the assembly of many components requires extremely high precision requirements to ensure the performance and reliability of machine equipment. For example, in the assembly process of some high-precision machine tools, aero-engines, precision instruments and other equipment, the traditional bolt connection method may not meet the positioning accuracy requirements. The positioning end wedging bolt came into being. It can achieve a tight fit between the bolt and the connected component through a special wedging structure during the tightening process, so as to accurately position the component and prevent the component from displacement or deviation due to factors such as vibration and impact during the working process.
[0003] However, after most traditional bolts are assembled, a nut part needs to be used to fasten from the bottom. Usually, there is also a gasket between the nut part and the object. When the nut part is tightened, the gasket will be compressed, which may cause damage to the gasket and unstable connection. Summary of the Utility Model
[0004] In order to make up for the above deficiencies, the utility model provides a positioning end wedging bolt, aiming to improve the problem that when the nut part is tightened, the gasket will be compressed, which may cause damage to the gasket and unstable connection.
[0005] To achieve the above object, the utility model provides the following technical solution: a positioning end wedging bolt, including a bolt head and a forward screw rod, the bolt head and the forward screw rod are an integral body, a thread root diameter is provided inside the forward screw rod, a nylon damping rod is arranged inside the forward screw rod, the outer wall of the nylon damping rod is arranged on the inner wall of the thread root diameter, the width of the nylon damping rod is greater than the thread pitch, the length of the nylon damping rod is greater than the thread root diameter, and a protection component is arranged on the upper surface of the bolt head, and the protection component is used to protect other parts.
[0006] Preferably, the protection component includes a protective shell, the lower surface of the protective shell is adhesively connected to the upper surface of the bolt head, and a soft rod is fixedly connected to the outer wall of the protective shell.
[0007] Preferably, a groove is provided inside the bolt head.
[0008] Preferably, the outer wall of the soft rod is attached to the inner wall of the groove.
[0009] Preferably, a reverse screw rod is fixedly connected to the upper surface of the bolt head.
[0010] Preferably, the upper surface of the reverse screw is in contact with the inner wall of the protective shell.
[0011] Preferably, the thread direction of the reverse screw is opposite to that of the forward screw.
[0012] The utility model has the following beneficial effects:
[0013] 1. In the utility model, the forward screw is installed at a suitable position, and then the nylon damping rod is placed inside the bottom diameter of the thread, and a nut is used to connect from the bottom of the forward screw. Since the thread pitch of the forward screw is equal to the diameter of the nylon damping rod, the matching nut can be wrapped to make the nut connection tighter, thereby achieving the effect of easy installation and tighter connection.
[0014] 2. In the utility model, the soft rod is aligned with the groove, and the protective shell is pressed to make the soft rod stuck in the inner wall of the groove. When the bolt needs to be removed, the protective shell is pulled outward to make the soft rod disengage from the groove. Since the reverse screw and the forward screw are arranged as reverse screws, the nut can be fastened to the outer wall of the reverse screw by rotating in the reverse direction. The nut is screwed on the outer wall of the reverse screw, and the nut is screwed out by using a tool, thereby protecting the reverse screw and preventing the forward screw from being disengaged due to rust on the outer wall of the bolt head. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A three-dimensional diagram of a positioning end wedging bolt proposed by the utility model;
[0016] Figure 2 A cross-sectional view of a protective shell of a positioning end wedged into a bolt proposed by the utility model;
[0017] Figure 3 A positioning end wedging bolt proposed by the utility model Figure 2 An enlarged schematic diagram of point A.
[0018] Legend:
[0019] 1. Bolt head; 2. Forward screw; 3. Thread bottom diameter; 4. Nylon damping rod; 5. Protective shell; 6. Soft rod; 7. Groove; 8. Reverse screw. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings of the specification of this utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] Reference Figures 1 - 3, An embodiment provided by the present utility model: A positioning end wedging bolt, including a bolt head 1 and a forward screw 2, the bolt head 1 and the forward screw 2 are an integral body, a thread root diameter 3 is provided inside the forward screw 2, a nylon damping rod 4 is arranged inside the forward screw 2, the outer wall of the nylon damping rod 4 is arranged on the inner wall of the thread root diameter 3, the width of the nylon damping rod 4 is greater than the thread pitch, the length of the nylon damping rod 4 is greater than the thread root diameter 3, a protection component is arranged on the upper surface of the bolt head 1, and the protection component is used to protect other parts;
[0022] Specifically, turn the bolt head 1 to make the forward screw 2 enter the position to be installed, then put the nylon damping rod 4 into the inside of the thread root diameter 3, and then use a nut to connect from the bottom of the forward screw 2. Since the thread pitch of the forward screw 2 is equal to the diameter of the nylon damping rod 4, it can wrap and cooperate with the nut part to make the connection of the nut more firm, achieving the effects of being convenient for installation and more firm connection.
[0023] Refer to Figures 1 - 3 , The protection component includes a protection shell 5, the lower surface of the protection shell 5 is adhesively connected to the upper surface of the bolt head 1, and a soft rod 6 is fixedly connected to the outer wall of the protection shell 5; a groove 7 is provided inside the bolt head 1; the outer wall of the soft rod 6 is attached to the inner wall of the groove 7;
[0024] Specifically, the protection shell 5 plays a role in protecting the reverse screw 8, and the soft rod 6 is stuck on the inner wall of the groove 7 to fix it.
[0025] Refer to Figures 1 - 3 , The upper surface of the bolt head 1 is fixedly connected with a reverse screw 8; the upper surface of the reverse screw 8 is attached to the inner wall of the protection shell 5; the thread directions of the reverse screw 8 and the forward screw 2 are opposite;
[0026] Specifically, the reverse screw 8 and the forward screw 2 are set as reverse screws, and rotating in the opposite direction can also make the nut fastened on the outer wall of the reverse screw 8.
[0027] Working principle: When the bolt needs to be used, first use a tool to turn the bolt head 1 so that the forward screw rod 2 enters the position where it needs to be installed. When the turning is completed, at this time, place the nylon damping rod 4 into the inner part of the thread bottom diameter 3, and then use a nut to connect from the bottom of the forward screw rod 2. Since the thread pitch of the forward screw rod 2 is equal to the diameter of the nylon damping rod 4, it can wrap and cooperate with the nut part to make the connection of the nut more firm. And the bolt head 1 is a structure applicable to various head types, achieving the effect of facilitating installation and making the connection more firm. After the bolt head 1 and the forward screw rod 2 are tightened, place the protective shell 5 on the outer wall of the bolt head 1, then align the soft rod 6 with the groove 7, and press the protective shell 5 to make the soft rod 6 stuck on the inner wall of the groove 7. Since the soft rod 6 is made of an elastic material, it is convenient to take out and install. When the bolt needs to be removed, pull the protective shell 5 outwards to make the soft rod 6 disengage from the groove 7. Since the reverse screw rod 8 and the forward screw rod 2 are set as reverse screws, rotating in the reverse direction can also make the nut fastened on the outer wall of the reverse screw rod 8. Screw the nut on the outer wall of the reverse screw rod 8, and then use a tool to turn the nut to make it disengage from the initial installation position, achieving the effect of protecting the reverse screw rod 8 and preventing the forward screw rod 2 from disengaging due to rust on the outer wall of the bolt head 1. That is, this bolt can not only achieve the effect of facilitating installation and making the connection more firm, but also achieve the effect of protecting the reverse screw rod 8 and preventing the forward screw rod 2 from not being able to disengage due to rust on the outer wall of the bolt head 1.
[0028] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A positioning end-wedged bolt, comprising a bolt head (1) and a forward screw (2), characterized in that: The bolt head (1) and the forward screw (2) are an integral body. A thread root diameter (3) is provided inside the forward screw (2). A nylon damping rod (4) is arranged inside the forward screw (2). The outer wall of the nylon damping rod (4) is arranged on the inner wall of the thread root diameter (3). The width of the nylon damping rod (4) is greater than the thread pitch. The length of the nylon damping rod (4) is greater than the thread root diameter (3). A protection component is arranged on the upper surface of the bolt head (1), and the protection component is used to protect other parts.
2. The positioning end wedging bolt according to claim 1, characterized in that: The protection component includes a protection shell (5). The lower surface of the protection shell (5) is adhesively connected to the upper surface of the bolt head (1). A soft rod (6) is fixedly connected to the outer wall of the protection shell (5).
3. The positioning end wedging bolt according to claim 2, characterized in that: A groove (7) is provided inside the bolt head (1).
4. The positioning end wedging bolt according to claim 3, characterized in that: The outer wall of the soft rod (6) is fitted to the inner wall of the groove (7).
5. A positioning end wedging bolt according to claim 1, characterized in that: A reverse screw (8) is fixedly connected to the upper surface of the bolt head (1).
6. The positioning end wedge-in bolt according to claim 5, wherein: The upper surface of the reverse screw (8) is fitted to the inner wall of the protection shell (5).
7. A positioning end wedging bolt according to claim 5, characterized in that: The thread direction of the reverse screw (8) is opposite to that of the forward screw (2).