Bolt structure

Abstract

The utility model discloses a bolt structure, which belongs to the technical field of automatic assembly and comprises a positioning bolt, a guide sleeve and a driving structure, the positioning bolt is divided into a joint section and a mounting section along two axial ends of the positioning bolt, and the joint section is used for being inserted into a target position; the guide sleeve penetrates in the axial direction to form a guide channel, and the positioning bolt is slidably connected to the guide channel; the driving structure comprises a power arm, a resisting arm and a positioning shaft, one end of the resisting arm is connected with the mounting section, the other end of the resisting arm is connected with the power arm, the positioning shaft penetrates through the joint of the resisting arm and the power arm, and the power arm is used for driving the resisting arm to rotate around the positioning shaft so as to drive the positioning bolt to move along the guide channel. According to the bolt structure provided by the utility model, through the cooperation of the positioning bolt, the guide sleeve and the driving structure, the labor intensity is reduced, the positioning precision is improved, and the automation degree and the operation efficiency of bolt positioning are improved.

Description

Technical Field

[0001] This utility model relates to the field of automated assembly technology, and in particular to a pin structure. Background Technology

[0002] In today's machinery and industrial production fields, precise positioning of components is a crucial step in ensuring production quality and normal equipment operation. During the operation of numerous pieces of machinery, the positional relationships between various components must be accurate; otherwise, equipment malfunctions and product quality defects may occur.

[0003] Pin structures, as a common mechanical positioning component, are widely used in various mechanical equipment and industrial production scenarios. Their main function is to fix the relative position of two or more components by inserting the pin body into a specific hole, slot, or mating part, thereby ensuring that the components of the equipment maintain accurate positional relationships during operation and guaranteeing stable and efficient operation of the equipment.

[0004] Currently, traditional pin positioning methods mostly rely on manual operation of the pins for positioning. This manual operation is inefficient, and the positioning accuracy is easily affected by human factors. Different operators have different operating habits and skill levels, and even the same operator may perform positioning deviations at different times, thus affecting the stability of product quality. Especially in situations requiring frequent positioning operations, manual operation not only significantly increases labor intensity but also significantly increases production costs.

[0005] To address the shortcomings of manual operation, some existing technologies attempt to employ automatic positioning mechanisms. However, these mechanisms generally suffer from complex structures, significantly increasing manufacturing costs and upfront investment for companies. Furthermore, they present substantial maintenance challenges, with high time, manpower, and material costs associated with repairs in case of malfunctions. Moreover, their complex structures often lack adaptability to the diverse positioning needs of actual production, making it difficult to flexibly adjust and meet positioning requirements in different scenarios. Utility Model Content

[0006] The purpose of this utility model is to provide a pin structure to solve the technical problems of low efficiency and poor accuracy of manual pin positioning methods in the prior art, and complex, costly and unsuitable automatic positioning mechanisms.

[0007] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0008] A latch structure, comprising:

[0009] The positioning pin is divided into a connector section and an installation section at both ends along its own axial direction. The connector section is used to insert into the target position. The guide sleeve is formed by extending along its own axial direction to form a guide channel. The positioning pin is slidably connected to the guide channel. The drive structure includes a power arm, a resistance arm, and a positioning shaft. One end of the resistance arm is connected to the installation section, and the other end is connected to the power arm. The positioning shaft is provided through the connection between the resistance arm and the power arm. The power arm is used to drive the resistance arm to rotate around the positioning shaft, so as to drive the positioning pin to move along the guide channel.

[0010] Preferably, the power arm and the resistance arm are arranged at an angle, the angle being greater than or equal to 60 degrees and less than or equal to 120 degrees.

[0011] Preferably, a positioning bushing is fitted on the outer wall of the positioning pin. The positioning bushing is located inside the guide channel. When the positioning pin moves a first distance along the guide channel, the positioning bushing abuts against the inner wall of one end of the guide sleeve to restrict the movement of the positioning pin.

[0012] Preferably, the pin structure further includes a compression spring, which is sleeved on the positioning pin. One end of the compression spring is connected to the positioning bushing, and the other end of the compression spring is connected to the inner wall of the other end of the guide sleeve.

[0013] Preferably, the resistance arm and the mounting section are rotatably connected by a rotating shaft. The mounting section has a first mounting hole extending radially through it, and the resistance arm has a second mounting hole extending radially through it. The rotating shaft passes through the first mounting hole and the second mounting hole in sequence.

[0014] Preferably, the second mounting hole is oblong and extends along the length of the resistance arm, and the rotating shaft can move within the second mounting hole.

[0015] Preferably, one end of the positioning shaft is detachably connected to a first fixed shaft clip, and both ends of the rotating shaft are detachably connected to a second fixed shaft clip.

[0016] Preferably, the guide sleeve has a mounting plate arranged radially around its outer periphery, and the mounting plate has multiple connection holes.

[0017] Preferably, the outer diameter of the joint section gradually decreases in the direction away from the mounting section.

[0018] Preferably, the pin structure further includes a positioning sensor for monitoring the position of the connector segment and generating a prompt message.

[0019] The beneficial effects of this utility model are:

[0020] The proposed pin structure employs a lever-type transmission mechanism consisting of a power arm, a resistance arm, and a positioning shaft. When the power arm rotates around the positioning shaft, the rotational motion is converted into linear displacement of the resistance arm through the lever principle, thereby driving the positioning pin to move precisely along the guide channel of the guide sleeve, ensuring the connector segment is inserted into the target position. This design utilizes the lever arm length ratio to adjust the amplification factor of the driving force, making the forward and backward movement of the positioning pin more effortless and controllable. The through-type guide channel of the guide sleeve provides stable linear motion constraints for the positioning pin, effectively preventing radial offset during movement and ensuring the alignment accuracy of the connector segment with the target position during insertion. In summary, this pin structure, through the coordinated operation of the positioning pin, guide sleeve, and drive structure, achieves automatic docking of the positioning pin, eliminating the need for manual operation, improving positioning efficiency, and reducing labor intensity. Furthermore, the pin structure is relatively simple in design, without complex construction, resulting in low manufacturing costs and easier maintenance. Simultaneously, relying on a clearly defined mechanical structure to achieve its function, it can adapt to the pin positioning needs in different scenarios, optimizing the performance of pin positioning. Attached Figure Description

[0021] Figure 1 This is a first structural schematic diagram of the pin structure provided in this embodiment of the utility model;

[0022] Figure 2 This is a second structural schematic diagram of the pin structure provided in this embodiment of the utility model;

[0023] Figure 3 This is a side view of the pin structure provided in this embodiment of the utility model;

[0024] Figure 4 This is a partial structural schematic diagram of the pin structure provided in this embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the power arm and resistance arm provided in this embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of the driving structure provided in an embodiment of the present invention.

[0027] In the picture:

[0028] 1. Positioning pin; 11. Connector section; 12. Mounting section; 121. First mounting hole; 2. Guide sleeve; 21. Guide channel; 22. Mounting plate; 221. Connecting hole; 3. Drive structure; 31. Power arm; 32. Resistance arm; 321. Second mounting hole; 33. Positioning shaft; 4. Positioning bushing; 5. Compression spring; 6. First fixed shaft clip; 7. Second fixed shaft clip; 8. Rotating shaft. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] See Figures 1 to 6 The pin structure provided in this embodiment includes a positioning pin 1, a guide sleeve 2, and a driving structure 3. The positioning pin 1 is divided into a connector section 11 and an installation section 12 at both ends along its axial direction. The connector section 11 is used to insert into a target position. The guide sleeve 2 forms a guide channel 21 along its axial direction, and the positioning pin 1 is slidably connected to the guide channel 21. The driving structure 3 includes a power arm 31, a resistance arm 32, and a positioning shaft 33. One end of the resistance arm 32 is connected to the installation section 12, and the other end is connected to the power arm 31. The positioning shaft 33 is provided through the connection between the resistance arm 32 and the power arm 31. The power arm 31 drives the resistance arm 32 to rotate around the positioning shaft 33, thereby moving the positioning pin 1 along the guide channel 21.

[0034] The pin structure proposed in this utility model employs a lever-type transmission mechanism consisting of a power arm 31, a resistance arm 32, and a positioning shaft 33 in its drive structure 3. When the power arm 31 rotates around the positioning shaft 33, the rotational motion is converted into linear displacement of the resistance arm 32 through the lever principle, thereby driving the positioning pin 1 to move precisely along the guide channel 21 of the guide sleeve 2, so that the connector segment 11 is inserted into the target position. This design utilizes the lever arm length ratio to adjust the amplification factor of the driving force, making the forward and backward movement of the positioning pin 1 more effortless and controllable. The through-type guide channel 21 of the guide sleeve 2 provides stable linear motion constraint for the positioning pin 1, effectively preventing radial offset of the positioning pin 1 during movement and ensuring the alignment accuracy of the connector segment 11 with the target position during insertion. In summary, this pin structure, through the coordinated cooperation of the positioning pin 1, the guide sleeve 2, and the drive structure 3, achieves automatic docking of the positioning pin 1, eliminating the need for manual operation of the positioning pin 1, improving positioning efficiency, and reducing labor intensity. Moreover, the design of this pin structure is relatively simple and has no complex structure. It is not only inexpensive to manufacture, but also easier to maintain. At the same time, it relies on a clear mechanical structure to achieve its function, which can adapt to the pin positioning needs in different scenarios and optimize the performance of pin positioning.

[0035] The specific structure and working principle of the latch mechanism are explained below.

[0036] When in use, the power arm 31 needs to be pushed by a power source to drive the power arm 31 to rotate the resistance arm 32 around the positioning shaft 33. The power source can be a cylinder, a motor, etc. The specific implementation form is not limited here, as long as the above effect can be achieved.

[0037] The drive arm 31 and the resistance arm 32 are set at an angle, which is greater than or equal to 60 degrees and less than or equal to 120 degrees. During the insertion of the positioning pin 1, the drive arm 31 rotates around the positioning shaft 33 as the fulcrum. When the angle between the two arms is in the range of 60 degrees to 120 degrees, the change in the rotation angle of the drive arm 31 can be efficiently converted into the linear displacement output of the resistance arm 32. At this time, the force transmission angle formed by the force direction of the drive arm 31 and the movement direction of the resistance arm 32 is close to the optimal mechanical transmission efficiency. This can avoid the insufficient effective length of the drive arm 31 due to the small angle, and also prevent transmission dead points or mechanism jamming caused by sudden changes in the motion trajectory when the angle is too large.

[0038] Preferably, the angle between the power arm 31 and the resistance arm 32 is 90 degrees, so that the power arm 31 and the resistance arm 32 are arranged approximately perpendicularly. At this time, the force amplification effect of the lever transmission is most significant, and the power source only needs to apply a small force to overcome the sliding friction resistance between the positioning pin 1 and the guide sleeve 2. In addition, this angle design ensures that when the positioning pin 1 is fully inserted or withdrawn from the target position, the power arm 31 and the resistance arm 32 still maintain a reasonable angular margin. This not only provides structural space for buffering at the end of the positioning pin 1's stroke, but also avoids rigid collisions between components caused by excessive folding or unfolding of the arm body, thereby effectively extending the service life of the pin structure.

[0039] In this embodiment, the power arm 31 and the resistance arm 32 are integrally formed, eliminating the need for additional connection processes, simplifying the manufacturing process, helping to reduce manufacturing costs, and also facilitating processing and production, thus improving production efficiency. In practical use, the integrated structure allows for smoother and more efficient power transmission.

[0040] The resistance arm 32 is rotatably connected to the mounting section 12 via a rotating shaft 8. The mounting section 12 has a first mounting hole 121 extending radially through it, and the resistance arm 32 has a second mounting hole 321 extending radially through it. The rotating shaft 8 passes through the first mounting hole 121 and the second mounting hole 321 in sequence. When the resistance arm 32 rotates around the positioning shaft 33 under the drive of the power arm 31, it can drive the positioning pin 1 to move more flexibly and smoothly, avoiding motion interference caused by the rigid connection between the resistance arm 32 and the positioning pin 1.

[0041] Specifically, the second mounting hole 321 is elongated and extends along the length of the resistance arm 32, allowing the rotating shaft 8 to move within it. During operation, different working conditions and stress states may cause slight variations in the movement trajectory of the resistance arm 32. The elongated second mounting hole 321 allows the rotating shaft 8 to move within a certain range, avoiding movement restrictions or interference problems that might occur if the rotating shaft 8's position is fixed. When the resistance arm 32 is subjected to forces of different directions or magnitudes, the rotating shaft 8 can adaptively adjust its position within the elongated hole, ensuring that the resistance arm 32 can rotate smoothly around the positioning shaft 33, thereby ensuring that the positioning pin 1 moves stably and accurately along the guide channel 21, effectively improving the adaptability of the pin structure.

[0042] Preferably, one end of the positioning shaft 33 is detachably connected to a first fixing shaft clip 6, and both ends of the rotating shaft 8 are detachably connected to second fixing shaft clips 7. The first fixing shaft clip 6 effectively prevents the positioning shaft 33 from disengaging from its connection with the power arm 31 and the resistance arm 32, and the second fixing shaft clip 7 effectively prevents the rotating shaft 8 from disengaging from its connection with the mounting section 12 and the resistance arm 32, ensuring the stability of the connections between the components of the drive structure 3 and ensuring that the positioning shaft 33 and the rotating shaft 8 are always in the correct position during operation of the pin structure. The detachable connection method facilitates the assembly and disassembly of the pin structure. During the manufacturing process, it is easy to accurately install the positioning shaft 33 and the rotating shaft 8 into place, improving assembly efficiency. During later maintenance or component replacement, the shaft clips can be easily removed to take out the positioning shaft 33 and the rotating shaft 8.

[0043] The guide sleeve 2 has a guide channel 21 inside, which is used to guide the movement of the positioning pin 1. Specifically, a positioning bushing 4 is fitted on the outer wall of the positioning pin 1. The positioning bushing 4 is located inside the guide channel 21. When the positioning pin 1 moves a first distance along the guide channel 21, the positioning bushing 4 abuts against the inner wall of one end of the guide sleeve 2, which restricts the movement of the positioning pin 1 and provides precise limit for the displacement of the positioning pin 1. On the one hand, it avoids excessive movement of the positioning pin 1, ensuring that it performs positioning operations in the appropriate position and further improving positioning accuracy; on the other hand, it prevents the positioning pin 1 from accidentally moving out of the guide channel 21, ensuring the stability and reliability of the pin structure during operation.

[0044] Furthermore, the pin structure also includes a compression spring 5, which is sleeved on the positioning pin 1. One end of the compression spring 5 is connected to the positioning bushing 4, and the other end is connected to the inner wall of the other end of the guide sleeve 2. The compression spring 5 provides elastic buffering force. During the movement of the positioning pin 1, whether it is inserted or pulled out, the elastic action of the compression spring 5 can prevent the positioning pin 1 from being subjected to large impacts due to sudden external force or rapid movement. After the positioning pin 1 completes the positioning action, the elastic force of the compression spring 5 can keep the positioning pin 1 in a stable positioning state, enhance the positioning firmness, prevent the positioning pin 1 from loosening or shifting due to external vibrations or other factors, and further improve the reliability of positioning. In addition, when it is necessary to pull out the positioning pin 1, the elastic potential energy stored in the compression spring 5 can also assist the positioning pin 1 to quickly reset, which is convenient for the next positioning operation and improves the working efficiency of the pin structure.

[0045] A mounting plate 22 is provided radially around the outer periphery of the guide sleeve 2. The mounting plate 22 provides a convenient mounting base for the pin structure, enabling it to be easily connected and fixed to other equipment or components, thus enhancing the adaptability and versatility of the pin structure in different application scenarios. The mounting plate 22 is provided with multiple connection holes 221, which further optimizes the flexibility of the connection. Different connection holes 221 can be selected for connection operations according to actual installation needs, meeting diverse installation layout requirements.

[0046] Along the direction away from the installation section 12, the outer diameter of the connector section 11 gradually decreases, thereby forming a guide slope on the outer surface of the connector section 11, making it easier to align and insert the connector section 11 when it is inserted into the target position.

[0047] The pin structure also includes a positioning sensor, which monitors the position of the connector segment 11 and generates a prompt message. Specifically, the positioning sensor is a photoelectric sensor, which is fixedly mounted on the outer peripheral wall of the guide sleeve 2 near the connector segment 11 via a sensor bracket. The sensing end of the positioning sensor faces the axial extension direction of the guide channel 21. A trigger plate is embedded at a corresponding position on the outer wall of the connector segment 11 of the positioning pin 1. When the drive structure 3 moves the positioning pin 1 to a preset position, the trigger plate moves with the positioning pin 1 to align with the sensing end of the positioning sensor, triggering a change in the sensor's output level signal. The positioning sensor is connected to an external control system via a signal line. When it detects that the connector segment 11 has reached the preset position, it generates a prompt message and transmits it to the external device, realizing real-time monitoring and feedback of the positioning pin 1's position status.

[0048] Furthermore, the positioning sensor is connected to the power source signal to form a closed-loop control circuit. When the power source receives an external start command, it applies a pushing force to the power arm 31, driving the power arm 31 to rotate around the positioning shaft 33, and then, through the resistance arm 32, drives the positioning pin 1 to move along the guide channel 21 to the target position. During this process, the induction trigger plate embedded in the positioning pin 1 moves synchronously with the positioning pin 1. When the connector section 11 reaches the preset insertion depth, the induction trigger plate enters the effective detection area of ​​the positioning sensor, and the positioning sensor then generates a positioning signal and transmits it to the control circuit of the power source through the signal line. After receiving the positioning signal, the power source immediately cuts off or reduces the driving force of the output shaft, so that the pin is stably held in the position, realizing the automatic termination of the insertion action. When it is necessary to release the positioning pin 1, the positioning pin 1 is retracted by controlling the power source to work in reverse.

[0049] Preferably, the sensor bracket adopts an adjustable mounting structure. The bottom of the sensor bracket is connected to the threaded hole on the outer wall of the guide sleeve 2 via a locking bolt. The sensor bracket is provided with a strip-shaped adjustment groove extending axially along the guide channel 21. The positioning sensor is fixed to the sensor bracket by a fastening screw passing through the adjustment groove. By sliding the positioning sensor along the adjustment groove and locking it, the alignment relationship between the positioning sensor and the induction trigger piece can be accurately calibrated, adapting to pin positioning detection with different stroke requirements.

[0050] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. 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. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A latch structure characterized by, include: The positioning pin (1) is divided into a connector section (11) and an installation section (12) at both ends along its own axial direction. The connector section (11) is used to be inserted into the target position. The guide sleeve (2) extends along its own axis to form a guide channel (21), and the positioning pin (1) is slidably connected to the guide channel (21); The drive structure (3) includes a power arm (31), a resistance arm (32), and a positioning shaft (33). One end of the resistance arm (32) is connected to the mounting section (12), and the other end is connected to the power arm (31). The positioning shaft (33) is provided through the connection between the resistance arm (32) and the power arm (31). The power arm (31) is used to drive the resistance arm (32) to rotate around the positioning shaft (33) so as to drive the positioning pin (1) to move along the guide channel (21).

2. The latch structure according to claim 1, characterized in that The power arm (31) and the resistance arm (32) are arranged at an angle, the angle being greater than or equal to 60 degrees and less than or equal to 120 degrees.

3. The latch structure according to claim 1, wherein A positioning bushing (4) is fitted on the outer wall of the positioning pin (1). The positioning bushing (4) is located inside the guide channel (21). When the positioning pin (1) moves a first distance along the guide channel (21), the positioning bushing (4) abuts against the inner wall of one end of the guide sleeve (2) to restrict the movement of the positioning pin (1).

4. The latch structure according to claim 3, wherein The pin structure also includes a compression spring (5), which is sleeved on the positioning pin (1). One end of the compression spring (5) is connected to the positioning bushing (4), and the other end of the compression spring (5) is connected to the inner wall of the other end of the guide sleeve (2).

5. The latch structure according to claim 1, wherein The resistance arm (32) is rotatably connected to the mounting section (12) via a rotating shaft (8). The mounting section (12) has a first mounting hole (121) extending radially through it, and the resistance arm (32) has a second mounting hole (321) extending radially through it. The rotating shaft (8) passes through the first mounting hole (121) and the second mounting hole (321) in sequence.

6. The latch structure according to claim 5, wherein The second mounting hole (321) is oblong and extends along the length of the resistance arm (32), and the rotating shaft (8) can move within the second mounting hole (321).

7. The latch structure according to claim 5, wherein One end of the positioning shaft (33) is detachably connected to a first fixed shaft clip (6), and both ends of the rotating shaft (8) are detachably connected to a second fixed shaft clip (7).

8. The latch structure according to claim 1, wherein The guide sleeve (2) has a mounting plate (22) arranged radially around its outer periphery, and the mounting plate (22) has a plurality of connecting holes (221).

9. The pin structure according to claim 1, characterized in that, The outer diameter of the joint section (11) gradually decreases in the direction away from the mounting section (12).

10. The latch structure according to claim 1, wherein The pin structure also includes a positioning sensor, which is used to monitor the position of the connector segment (11) and generate a prompt message.

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