A limiting needle structure convenient to install

Abstract

The utility model discloses a kind of limit needle structure convenient to install, belong to limit needle technical field, it includes base, the upper lap of base is provided with fixed plate, several limit needle bodies are provided in the fixed plate, the both sides of base are fixedly connected with auxiliary frame, the outer connection of fixed plate is limited to slope board one, auxiliary frame is equipped with clamping structure, auxiliary frame is slidably connected with auxiliary structure, the auxiliary structure is connected with clamping structure, the clamping structure includes moving inclined block, limit slope board two and trapezoidal block. The utility model is equipped with auxiliary frame, limit needle body, fixed plate, limit slope board one and clamping structure, the cooperation between the limit needle structure by moving inclined block, limit slope board two and first spring, so that limit needle body and base can realize the function of quick assembly, avoid the phenomenon that limit needle is difficult to assemble due to thread damage, greatly improve installation efficiency and precision, and reduce installation cost.

Description

Technical Field

[0001] This utility model relates to the field of limiting pin technology, specifically a limiting pin structure that is easy to install. Background Technology

[0002] As a commonly used mechanical positioning element, limit pins are widely used in various mechanical equipment, instruments and precision devices to limit the stroke, position or direction of moving parts, and ensure the normal operation and accuracy of the equipment. Their importance is self-evident. It can be said that limit pins are one of the key factors to ensure the safe, reliable and efficient operation of mechanical systems.

[0003] The applications of positioning pins are extremely wide, covering almost all mechanical systems that require precise positioning. For example, in CNC machine tools, positioning pins are used to determine the starting position and end point of the tool's stroke, ensuring machining accuracy and preventing collisions between the tool and the workpiece or fixture. In automated production lines, positioning pins are used to position the workpiece during transport, ensuring the accuracy and efficiency of the assembly process. In robotics, positioning pins are used to limit the range of motion of robot joints, preventing damage to the mechanical structure caused by excessive movement. In the aerospace field, positioning pins are used for the precision adjustment of flight control systems to ensure flight safety. In addition, positioning pins also play a crucial role in medical devices, optical instruments, and measuring equipment.

[0004] The working principle of the limit pin seems simple, but it has very high requirements for precision and reliability. Traditional limit pins are usually installed by threaded connection. Although this installation method has certain universality and economy, it also has many drawbacks. First, threaded connection requires the use of tools such as wrenches and hammers, which not only increases the complexity of installation but also prolongs the installation time. Second, threaded connection requires a high level of technical skill from the installer. The installer needs to have rich experience and skillful techniques to ensure the firmness and precision of the limit pin installation. If the installation is not done properly, it will not only cause the limit pin to loosen or fall off, affecting the normal operation of the equipment, but may even cause serious safety accidents.

[0005] More importantly, threaded connection limit pins are prone to failure during installation due to thread damage. If uneven force or excessive torque is applied during tightening, the threads can easily strip or break, preventing the limit pin from being installed properly or causing it to lose its positioning function. This not only wastes materials but also increases production and maintenance costs. Furthermore, threaded connection limit pins are difficult to adjust after installation. Once the limit pin is in place, if its position needs to be adjusted, it must be disassembled and reinstalled, which is not only time-consuming and labor-intensive but also prone to deformation or even damage to the mating hole during disassembly. This is especially problematic for precision equipment where the mating hole requires extremely high precision; if damaged, the entire equipment may need to be scrapped. Utility Model Content

[0006] The purpose of this invention is to provide a limit pin structure that is easy to install, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a limit pin structure that is easy to install, including a base, a fixing plate attached to the top of the base, a plurality of limit pin bodies disposed within the fixing plate, auxiliary frames fixedly connected to both sides of the base, a first limit inclined plate connected to the outside of the fixing plate, a snap-fit ​​structure disposed within the auxiliary frame, an auxiliary structure slidably connected within the auxiliary frame, the auxiliary structure being connected to the snap-fit ​​structure, the snap-fit ​​structure including a movable inclined block, a second limit inclined plate, and a trapezoidal block, a first spring fixedly connected to one side of the movable inclined block.

[0008] As a further preferred embodiment of this technical solution, the base is provided with an insertion hole, the limiting pin is snapped into the base, and the limiting inclined plate is snapped into the auxiliary frame.

[0009] As a further preferred embodiment of this technical solution, the movable inclined block is slidably connected within the auxiliary frame, and the movable inclined block is connected within the first spring via the first spring.

[0010] As a further preferred embodiment of this technical solution, the second limiting inclined plate is fixedly connected above the moving inclined block, and the second limiting inclined plate is engaged with the first limiting inclined plate.

[0011] As a further preferred embodiment of this technical solution, the trapezoidal block overlaps with the movable inclined block, and the trapezoidal block is slidably connected within the auxiliary frame.

[0012] As a further preferred embodiment of this technical solution, the auxiliary structure includes a movable rod and a bolt. One end of the movable rod is connected to the trapezoidal block, and the other end of the movable rod is fixedly connected to a fixed plate. The movable rod is slidably connected within the auxiliary frame.

[0013] As a further preferred embodiment of this technical solution, the movable rod is fitted with a second spring, the fixed plate is connected to the auxiliary frame through the second spring, the bolt is threaded inside the auxiliary frame, and the bolt is engaged with the movable rod.

[0014] This utility model provides a limit pin structure that is easy to install, and has the following beneficial effects:

[0015] (1) This utility model sets up an auxiliary frame, a limiting pin body, a fixed plate, a limiting inclined plate one and a snap-fit ​​structure. The limiting pin body is attached to the base above the fixed plate. The limiting inclined plate one on the surface of the fixed plate will contact the limiting inclined plate two. When the limiting inclined plate two is affected by the pushing force, it will drive the moving inclined block to slide in the auxiliary frame. When the moving inclined block slides, it will drive the first spring to deform. When the fixed plate and the base are completely attached, the moving inclined block will be reset by the first spring. The limiting inclined plate two will snap-fit ​​with the limiting inclined plate one. This limiting pin structure enables the limiting pin body and the base to be quickly assembled through the cooperation between the moving inclined block, the limiting inclined plate two and the first spring. It avoids the phenomenon that the limiting pin is difficult to assemble due to the damage of the threads, greatly improves the installation efficiency and accuracy and reduces the installation cost.

[0016] (2) By setting an auxiliary structure, the bolt is separated from the auxiliary frame. Then, the moving rod is pushed by the fixed plate. The trapezoidal block will move with the moving rod. Since the trapezoidal block and the moving inclined block overlap, the moving inclined block will slide with the action of the trapezoidal block. The second spring will also deform accordingly, so that the position of the moving inclined block can be adjusted. It is convenient to disassemble the limiting needle body afterward, and avoid the phenomenon of the limiting needle body becoming loose after installation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the explosion of the limiting needle body of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the snap-fit ​​structure of this utility model;

[0020] Figure 4 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Base; 2. Fixing plate; 3. Limiting pin body; 4. Auxiliary frame; 5. Limiting inclined plate one; 6. Snap-fit ​​structure; 601. Moving inclined block; 602. Limiting inclined plate two; 603. Trapezoidal block; 604. First spring; 7. Auxiliary structure; 701. Moving rod; 702. Fixing plate; 703. Second spring; 704. Bolt; 8. Insertion hole. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] This utility model provides a technical solution: such as Figure 1 and Figure 4 As shown in this embodiment, a limit pin structure that is easy to install includes a base 1, a fixing plate 2 is attached to the top of the base 1, a plurality of limit pin bodies 3 are provided in the fixing plate 2, auxiliary frames 4 are fixedly connected to both sides of the base 1, a limit inclined plate 5 is connected to the outside of the fixing plate 2, a snap-fit ​​structure 6 is provided in the auxiliary frame 4, an auxiliary structure 7 is slidably connected in the auxiliary frame 4, the auxiliary structure 7 is connected to the snap-fit ​​structure 6, the snap-fit ​​structure 6 includes a movable inclined block 601, a limit inclined plate 602 and a trapezoidal block 603, and a first spring 604 is fixedly connected to one side of the movable inclined block 601.

[0024] like Figure 1 and Figure 3 As shown, the base 1 has an insertion hole 8, the limiting pin 3 is snapped into the base 1, the limiting inclined plate 5 is snapped into the auxiliary frame 4, the moving inclined block 601 is slidably connected into the auxiliary frame 4, the moving inclined block 601 is connected into the first spring 604 through the first spring 604, the limiting inclined plate 2 602 is fixedly connected above the moving inclined block 601, the limiting inclined plate 2 602 is snapped into the limiting inclined plate 5, the trapezoidal block 603 overlaps with the moving inclined block 601, and the trapezoidal block 603 is slidably connected into the auxiliary frame 4;

[0025] By setting the first spring 604, when the first limiting inclined plate 5 contacts the second limiting inclined plate 602, the second limiting inclined plate 602 will drive the moving inclined block 601 to slide within the auxiliary frame 4 when it is subjected to the pushing force. When the moving inclined block 601 slides, it will cause the first spring 604 to deform, so that the first spring 604 plays a certain supporting role for the movement of the moving inclined block 601. When the moving inclined block 601 loses resistance, it will be reset by the first spring 604.

[0026] Through the coordinated design of limiting inclined plate 1 5 and limiting inclined plate 2 602, as well as the buffering and reset mechanism of moving inclined block 601 and first spring 604, the precise positioning of limiting needle body 3 is ensured. This design can effectively prevent the limiting needle body 3 from being displaced under vibration or impact, thus ensuring the stability and accuracy of the equipment.

[0027] like Figure 3 and Figure 4 As shown, the auxiliary structure 7 includes a movable rod 701 and a bolt 704. One end of the movable rod 701 is connected to the trapezoidal block 603, and the other end of the movable rod 701 is fixedly connected to a fixed plate 702. The movable rod 701 is slidably connected inside the auxiliary frame 4. A second spring 703 is sleeved on the movable rod 701. The fixed plate 702 is connected to the auxiliary frame 4 through the second spring 703. The bolt 704 is threadedly connected inside the auxiliary frame 4 and is engaged with the movable rod 701.

[0028] Through the linkage mechanism of the moving rod 701, trapezoidal block 603 and moving inclined block 601, non-destructive disassembly can be achieved, which facilitates maintenance and replacement of the limit needle body 3, avoids damage caused by disassembly, and ensures the flexibility of the limit needle structure.

[0029] By setting bolt 704, when the moving rod 701 loses pressure, the fixed plate 702 will be reset by the action of the second spring 703. After the moving rod 701 is reset, the auxiliary frame 4 will be fixed to it by bolt 704, thereby locking the position of the trapezoidal block 603 and preventing the trapezoidal block 603 from being bumped by external forces.

[0030] This utility model provides a limit pin structure that is easy to install, and its specific working principle is as follows:

[0031] When the limiting pin structure is installed and used, the limiting pin body 3 can be attached to the base 1 above the fixing plate 2. The limiting inclined plate 5 on the surface of the fixing plate 2 will contact the limiting inclined plate 602. When the limiting inclined plate 602 is affected by the pushing force, it will drive the moving inclined block 601 to slide in the auxiliary frame 4. When the moving inclined block 601 slides, it will drive the first spring 604 to deform. When the fixing plate 2 and the base 1 are completely attached, the moving inclined block 601 will be reset by the first spring 604, and the limiting inclined plate 602 will be engaged with the limiting inclined plate 5.

[0032] When it is necessary to disassemble the limiting pin body 3, the bolt 704 can be separated from the auxiliary frame 4, and then the moving rod 701 is pushed by the fixed plate 702. The trapezoidal block 603 will move with the moving rod 701. Since the trapezoidal block 603 is connected with the moving inclined block 601, the moving inclined block 601 will slide with the action of the trapezoidal block 603, and the second spring 703 will also deform accordingly.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A limit pin structure that is easy to install, comprising a base (1), characterized in that: A fixing plate (2) is attached to the top of the base (1). Several limiting pins (3) are provided in the fixing plate (2). Auxiliary frames (4) are fixedly connected to both sides of the base (1). A limiting inclined plate (5) is connected to the outside of the fixing plate (2). A snap-fit ​​structure (6) is provided in the auxiliary frame (4). An auxiliary structure (7) is slidably connected in the auxiliary frame (4). The auxiliary structure (7) is connected to the snap-fit ​​structure (6). The snap-fit ​​structure (6) includes a moving inclined block (601), a limiting inclined plate (602) and a trapezoidal block (603). A first spring (604) is fixedly connected to one side of the moving inclined block (601).

2. The easy-to-install limiting pin structure according to claim 1, characterized in that: The base (1) has an insertion hole (8), the limiting needle body (3) is snapped into the base (1), and the limiting inclined plate (5) is snapped into the auxiliary frame (4).

3. The easy-to-install limiting pin structure according to claim 1, characterized in that: The movable inclined block (601) is slidably connected in the auxiliary frame (4), and the movable inclined block (601) is connected in the first spring (604) through the first spring (604).

4. The easy-to-install limiting pin structure according to claim 1, characterized in that: The second limiting inclined plate (602) is fixedly connected above the moving inclined block (601), and the second limiting inclined plate (602) is engaged with the first limiting inclined plate (5).

5. The easy-to-install limiting pin structure according to claim 1, characterized in that: The trapezoidal block (603) overlaps with the movable inclined block (601), and the trapezoidal block (603) is slidably connected within the auxiliary frame (4).

6. The easy-to-install limiting pin structure according to claim 1, characterized in that: The auxiliary structure (7) includes a movable rod (701) and a bolt (704). One end of the movable rod (701) is connected to the trapezoidal block (603), and the other end of the movable rod (701) is fixedly connected to a fixed plate (702). The movable rod (701) is slidably connected in the auxiliary frame (4).

7. The easy-to-install limiting pin structure according to claim 6, characterized in that: The moving rod (701) is fitted with a second spring (703), the fixed plate (702) is connected to the auxiliary frame (4) through the second spring (703), the bolt (704) is threaded inside the auxiliary frame (4), and the bolt (704) is engaged with the moving rod (701).

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