Quick-release stop pin assembly

Abstract

The utility model discloses a quick release stop pin assembly, which comprises an adjusting knob, a blanking cap, a gasket, a stop gasket, a spring component, a pin rod, a pin body and a limit stop pin, the pin body is provided with an axial through hole corresponding to the pin rod, the front end of the pin body is provided with a front mounting hole, a step surface is formed between the front mounting hole and the axial through hole, and the limit stop pin is arranged in the step surface. A rear mounting hole is formed in the rear end of the pin body; the pin rod is installed in an axial through hole in the pin body, the adjusting knob penetrates through the blanking cap to be connected with the pin rod, and the limiting stop pin is connected with the pin rod through the rear installation hole. The gasket, the lock gasket and the spring assembly are sequentially arranged on the outer side of the pin rod located in the front installation hole in a sleeving mode. By the adoption of the assembly, the problem that a steel ball of a traditional steel ball quick-release stop pin protrudes and falls back and is prone to being clamped is effectively solved, quality is more stable, connection is more reliable and more convenient, the use requirement can be met, and the assembly is simple in overall structure, convenient to install and use, high in practicability and suitable for application and popularization.

Description

TECHNICAL FIELD

[0001] The utility model relates to connecting piece technical field, concretely relates to a quick-release stop pin assembly. BACKGROUND

[0002] The stop pin is a kind of commonly used mechanical parts, mainly used to prevent the relative motion of other components, and the stop pin is usually installed at the edge of the part that often needs to be disassembled to help fix some parts.In the mechanical fastening connection of certain aircraft, the quick-release stop pin commonly used at present is adopted, and axial displacement is generated through the pin rod, which drives the steel ball to protrude, so that the function of limiting axial displacement cannot be played, and the structure is shown in Figure 1 In actual processing, the steel ball is fixed by local deformation of the pin body, and the deformation amount is not easy to control, so that the flexibility of the steel ball is inconsistent, thereby affecting the ejection and backfall of the steel ball, and the situation of jamming is easily caused.

[0003] Therefore, in order to effectively solve the situation that the steel ball protrudes and backfalls and is easily jammed, the existing stop pin structure needs to be improved, so as to provide a new quick-release stop pin assembly, which uses a limiting stop pin to replace the existing steel ball, can effectively solve the situation that the steel ball protrudes and backfalls and is easily jammed, so that the connection is more reliable and more convenient, thereby meeting the use requirement. CONTENT OF THE UTILITY MODEL

[0004] The utility model solves the technical problem in the background art, in order to meet the requirement of the mechanical fastening connection of certain aircraft, thereby providing a kind of assembly with simple structure and convenient operation, which uses a limiting stop pin to replace the existing steel ball, can effectively solve the situation that the steel ball protrudes and backfalls and is easily jammed, so that the connection is more reliable and more convenient, thereby meeting the use requirement, specifically a kind of quick-release stop pin assembly.

[0005] To solve the above technical problems, the utility model adopts the technical scheme that a quick-release stop pin assembly comprises an adjusting knob, a plug cover, a gasket, a stop gasket, a spring assembly, a pin rod, a pin body and a limiting stop pin, the pin body is provided with an axial through hole corresponding to the pin rod, a front mounting hole coaxially arranged with the axial through hole is arranged at the front end of the pin body, a step surface is formed between the front mounting hole and the axial through hole, and a rear mounting hole perpendicularly arranged with the axial through hole is arranged at the rear end of the pin body; the pin rod is mounted in the pin body through the axial through hole, the plug cover is plugged at the front end of the front mounting hole, the adjusting knob is connected with the pin rod extending into the front mounting hole through the plug cover, and the limiting stop pin is connected with the pin rod through the rear mounting hole; the gasket, the stop gasket and the spring assembly are sequentially sleeved outside the pin rod in the front mounting hole, wherein the gasket is connected with the adjusting knob, the front side surface of the stop gasket is connected in contact with the gasket, and the rear side surface is abutted and connected in contact with the step surface at the rear end of the front mounting hole through the spring assembly.

[0006] Further, the utility model discloses a quick-release stop pin assembly, the plug cover is provided with the stepped shaft hole structure of boss, the front mounting hole includes the first step hole, the second step hole and the third step hole that are coaxially arranged in sequence, the front mounting hole is formed with the stepped hole structure of three step surfaces through the first step hole, the second step hole and the third step hole, wherein the inner diameter of the first step hole is greater than the inner diameter of the second step hole, and the inner diameter of the second step hole is greater than the inner diameter of the third step hole, the plug cover is installed in the first step hole, and the boss extends into the second step hole, and the third step hole inner wall is further provided with the installation groove matched with the stop gasket, the stop gasket is installed in the third step hole through the installation groove, the adjusting knob is connected with the pin rod extending into the front mounting hole through the plug cover and is connected with the gasket arranged in the third step hole, the front end of the spring assembly is abutted and connected in contact with the stop gasket, and the rear end is abutted and connected in contact with the step surface at the third step hole.

[0007] Further, the utility model discloses a quick-release stop pin assembly, the front end of the adjusting knob is provided with the protruding portion, the square connecting hole recessed inward is arranged in the protruding portion, and the limiting clamping groove is further arranged in the protruding portion;The gasket is connected with the adjusting knob through the limiting clamping groove, and the square connecting end corresponding to the square connecting hole is arranged at the front end of the pin rod, the pin rod is inserted into the square connecting hole in the adjusting knob through the square connecting end, and the adjusting knob and the pin rod are connected.

[0008] Further, the quick-release stop pin assembly has two connecting pins symmetrically arranged at the rear end of the pin rod, the limiting stop pin is composed of two L-shaped stop pin bodies, and each stop pin body is provided with a connecting pin hole corresponding to the connecting pin, the two stop pin bodies are connected with the connecting pins in the pin rod through the corresponding connecting pin holes, and the stop pin body in the limiting stop pin is driven to rotate synchronously with the pin rod during rotation of the adjusting knob, so that the stop pin body is extended outwards from the rear mounting hole to the outside of the surface of the pin body, and thus the limiting effect is achieved.

[0009] Further, the quick-release stop pin assembly has two connecting pins symmetrically arranged at the rear end of the pin rod, the limiting stop pin is composed of two L-shaped stop pin bodies, and each stop pin body is provided with a connecting pin hole corresponding to the connecting pin, the two stop pin bodies are connected with the connecting pins in the pin rod through the corresponding connecting pin holes, and the stop pin body in the limiting stop pin is driven to rotate synchronously with the pin rod during rotation of the adjusting knob, so that the stop pin body is extended outwards from the rear mounting hole to the outside of the surface of the pin body, and thus the limiting effect is achieved.

[0010] Further, the quick-release stop pin assembly has two connecting pins symmetrically arranged at the rear end of the pin rod, the limiting stop pin is composed of two L-shaped stop pin bodies, and each stop pin body is provided with a connecting pin hole corresponding to the connecting pin, the two stop pin bodies are connected with the connecting pins in the pin rod through the corresponding connecting pin holes, and the stop pin body in the limiting stop pin is driven to rotate synchronously with the pin rod during rotation of the adjusting knob, so that the stop pin body is extended outwards from the rear mounting hole to the outside of the surface of the pin body, and thus the limiting effect is achieved.

[0011] Further, the quick-release stop pin assembly has two connecting pins symmetrically arranged at the rear end of the pin rod, the limiting stop pin is composed of two L-shaped stop pin bodies, and each stop pin body is provided with a connecting pin hole corresponding to the connecting pin, the two stop pin bodies are connected with the connecting pins in the pin rod through the corresponding connecting pin holes, and the stop pin body in the limiting stop pin is driven to rotate synchronously with the pin rod during rotation of the adjusting knob, so that the stop pin body is extended outwards from the rear mounting hole to the outside of the surface of the pin body, and thus the limiting effect is achieved.

[0012] The utility model relates to a kind of quick-release stop pin assemblies, compared with existing quick-release stop pin, using limiting stop pin replaces existing steel ball, can effectively solve the situation that steel ball protrudes and falls back and is easy to jam, and the surface corresponding to the washer and stop washer is equipped with sawtooth surface, the washer and stop washer are connected by sawtooth surface meshing, so as to fix limiting and prevent rotating, effectively solve the situation that steel ball is easy to jam, more convenient and fast in installation and use process, and the stop lock effect is better.Obviously, using the assembly of the utility model, effectively solve the situation that traditional steel ball quick-release stop pin steel ball protrudes and falls back and is easy to jam, more stable in quality, so that connection is more reliable, more convenient, can meet the use demand, its overall structure is simple, convenient to install and use, with very high practicability, suitable for popularization and application. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model will be further explained in detail in combination with the drawings.

[0014] Figure 1 It is the structure schematic diagram of existing quick-release stop pin;

[0015] Figure 2 It is the structure schematic diagram of the utility model;

[0016] Figure 3 It is the structure schematic diagram of the adjusting knob in the utility model;

[0017] Figure 4 It is the top view of the adjusting knob in the utility model;

[0018] Figure 5 It is the structure schematic diagram of the plug cover in the utility model;

[0019] Figure 6 It is the top view of the plug cover in the utility model;

[0020] Figure 7 It is the half cutaway structure schematic diagram of washer in the utility model;

[0021] Figure 8 It is the structure schematic diagram of washer in the utility model;

[0022] Figure 9 It is the half cutaway of stop washer in the utility model;

[0023] Figure 10 It is the structure schematic diagram of stop washer in the utility model;

[0024] Figure 11 It is the structure schematic diagram of spring in spring assembly in the utility model;

[0025] Figure 12 is a structural schematic view of the spring in the spring assembly in the utility model;

[0026] Figure 13 is a structural schematic view of the pin rod in the utility model;

[0027] Figure 14 is a structural schematic view of the pin body in the utility model; Figure 13 is a structural schematic view of the pin body in the utility model;

[0028] Figure 15 is a structural schematic view of the pin body in the utility model; Figure 13 is a structural schematic view of the pin body in the utility model;

[0029] Figure 16 is a structural schematic view of the pin body in the utility model;

[0030] Figure 17 is a structural schematic view of the pin body in the utility model;

[0031] Figure 18 is a structural schematic view of the pin body in the utility model;

[0032] Figure 19 is a structural schematic view of the pin body in the utility model;

[0033] In the figure: 1-adjusting knob, 11-protruding part, 12-square connecting hole, 2-plug, 3-washer, 4-stop washer, 41-limiting protruding block, 5-spring assembly, 51-outer spring, 52-inner spring, 6-pin rod, 61-square connecting end, 62-connecting pin, 7-pin body, 71-axial through hole, 72-front mounting hole, 73-rear mounting hole, 74-step surface, 75-mounting groove, 8-limiting stop pin, 81-connecting pin hole. DETAILED DESCRIPTION

[0034] The following specific embodiments illustrate the implementation of the utility model, and those skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification.

[0035] It is to be understood that the structures, proportions, sizes, etc. shown in the drawings of the present application are only used to cooperate with the content disclosed in the present application, to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the present application, so they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right" and the like used in the present application are only for the convenience of clear description, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the present application.

[0036] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected", "provided with" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] It should be noted that the term "comprising" or any other variant is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment. Example 1

[0038] As Figures 2 to 18As shown, the embodiment provides a quick-release stop pin assembly, which comprises an adjusting knob 1, a plug cover 2, a gasket 3, a stop gasket 4, a spring assembly 5, a pin rod 6, a pin body 7 and a limiting stop pin 8. The pin body 7 is provided with an axial through hole 71 corresponding to the pin rod 6, a front mounting hole 72 coaxially arranged with the axial through hole 71 is arranged at the front end of the pin body 7, a stepped surface 74 is formed between the front mounting hole 72 and the axial through hole 71, and a rear mounting hole 73 perpendicular to the axial through hole 71 is arranged at the rear end of the pin body 7. The pin rod 6 is mounted in the pin body 7 through the axial through hole 71, the plug cover 2 is plugged at the front end of the front mounting hole 72, the adjusting knob 1 is connected with the pin rod 6 extending into the front mounting hole 72 through the plug cover 2, and the limiting stop pin 8 is connected with the pin rod 6 through the rear mounting hole 73. The gasket 3, the stop gasket 4 and the spring assembly 5 are sequentially sleeved outside the pin rod 6 located in the front mounting hole 72, wherein the gasket 3 is connected with the adjusting knob 1, the front side of the stop gasket 4 is in contact with the gasket 3, and the rear side is in abutting contact with the stepped surface 74 at the rear end of the front mounting hole 72 through the spring assembly 5. The plug cover 2 is provided as a stepped shaft hole structure with a boss, the front mounting hole 72 includes first, second and third stepped holes which are coaxially arranged in sequence, the front mounting hole 72 constitutes a stepped hole structure with three stepped surfaces 74 through the first, second and third stepped holes, wherein the inner diameter of the first stepped hole is larger than that of the second stepped hole, and the inner diameter of the second stepped hole is larger than that of the third stepped hole, the plug cover 2 is mounted in the first stepped hole, and the boss thereof extends into the second stepped hole, and the third stepped hole is further provided with a mounting groove 75 matched with the stop gasket 4 on the inner wall thereof, the stop gasket 4 is mounted in the third stepped hole through the mounting groove 75, the adjusting knob 1 is connected with the pin rod 6 extending into the front mounting hole 72 through the plug cover 2 and is connected with the gasket 3 arranged in the third stepped hole, and the front end of the spring assembly 5 is in abutting contact with the stop gasket 4, and the rear end is in abutting contact with the stepped surface 74 at the third stepped hole.

[0039] Further, the quick-release stop pin assembly of the embodiment is provided with a protruding portion 11 at the front end of the adjusting knob 1, a square connecting hole 12 is provided in the protruding portion 11, and a limiting clamping groove is also provided in the protruding portion 11; the washer 3 is connected with the adjusting knob 1 through the limiting clamping groove, and a square connecting end 61 corresponding to the square connecting hole 12 is provided at the front end of the pin rod 6, the pin rod 6 is inserted into the square connecting hole 12 in the adjusting knob 1 through the square connecting end 61, and the adjusting knob 1 and the pin rod 6 are connected. A connecting pin 62 is provided at the rear end of the pin rod 6, and the limiting stop pin 8 is composed of two L-shaped stop pin bodies, and a connecting pin hole 81 corresponding to the connecting pin 62 is provided in each stop pin body. The two stop pin bodies are connected with the connecting pin 62 in the pin rod 6 through the corresponding connecting pin holes 81. During the rotation of the pin rod 6 with the adjusting knob 1, the stop pin body in the limiting stop pin 8 rotates synchronously with the pin rod 6, so that the stop pin body extends outwards from the rear mounting hole 73 to the outside of the surface of the pin body 7, thereby playing a limiting role.

[0040] Further, the quick-release stop pin assembly of the embodiment is provided with a protruding portion 11 at the front end of the adjusting knob 1, a square connecting hole 12 is provided in the protruding portion 11, and a limiting clamping groove is also provided in the protruding portion 11; the washer 3 is connected with the adjusting knob 1 through the limiting clamping groove, and a square connecting end 61 corresponding to the square connecting hole 12 is provided at the front end of the pin rod 6, the pin rod 6 is inserted into the square connecting hole 12 in the adjusting knob 1 through the square connecting end 61, and the adjusting knob 1 and the pin rod 6 are connected. A connecting pin 62 is provided at the rear end of the pin rod 6, and the limiting stop pin 8 is composed of two L-shaped stop pin bodies, and a connecting pin hole 81 corresponding to the connecting pin 62 is provided in each stop pin body. The two stop pin bodies are connected with the connecting pin 62 in the pin rod 6 through the corresponding connecting pin holes 81. During the rotation of the pin rod 6 with the adjusting knob 1, the stop pin body in the limiting stop pin 8 rotates synchronously with the pin rod 6, so that the stop pin body extends outwards from the rear mounting hole 73 to the outside of the surface of the pin body 7, thereby playing a limiting role.

[0041] Further, the quick-release stop pin assembly of the embodiment is provided with a protruding portion 11 at the front end of the adjusting knob 1, a square connecting hole 12 is provided in the protruding portion 11, and a limiting clamping groove is also provided in the protruding portion 11; the washer 3 is connected with the adjusting knob 1 through the limiting clamping groove, and a square connecting end 61 corresponding to the square connecting hole 12 is provided at the front end of the pin rod 6, the pin rod 6 is inserted into the square connecting hole 12 in the adjusting knob 1 through the square connecting end 61, and the adjusting knob 1 and the pin rod 6 are connected. A connecting pin 62 is provided at the rear end of the pin rod 6, and the limiting stop pin 8 is composed of two L-shaped stop pin bodies, and a connecting pin hole 81 corresponding to the connecting pin 62 is provided in each stop pin body. The two stop pin bodies are connected with the connecting pin 62 in the pin rod 6 through the corresponding connecting pin holes 81. During the rotation of the pin rod 6 with the adjusting knob 1, the stop pin body in the limiting stop pin 8 rotates synchronously with the pin rod 6, so that the stop pin body extends outwards from the rear mounting hole 73 to the outside of the surface of the pin body 7, thereby playing a limiting role. Embodiment 2

[0042] In order to facilitate operation, the adjusting knob 1 can be provided with rotating power, and the combination part is used, and a one-slot or cross-slot is further arranged on the rear end surface of the adjusting knob 1 and is arranged at the center position of the rear end surface of the adjusting knob 1. Through the one-slot or cross-slot, the combination part can be assembled, the product is loaded into the mounting hole, the other connecting part is inserted into the one-slot or cross-slot, and the rotating power is provided for the adjusting knob 1, so that the pin rod 6 is synchronously rotated.

[0043] As shown in Figure 19 In the specific application process, the quick-release stop pin combination part is assembled, the end surface of the pin body 7 is edge-sealed, the plug cover 2 is fixed, and a whole structure is formed. The size of the limit stop pin 8 is consistent with the rod part of the pin body 7 when the limit stop pin 8 is closed, and then the product is loaded into the mounting hole. When the quick-release stop pin is installed in place, the adjusting knob 1 is rotated by 90° to synchronously rotate the pin rod 6, the two stop pin bodies in the limit stop pin 8 are moved up and down through the pin rod 6, and the two stop pin bodies in the limit stop pin 8 are protruded from the side surface of the pin body 7, so that the limit effect is achieved.

[0044] In addition, the surfaces of the washer 3 and the stop washer 4 corresponding to each other are provided with sawtooth surfaces, the washer 3 and the stop washer 4 are connected through the sawtooth surfaces, and the sawtooth surfaces can be engaged, so that the functions of fixing, limiting and preventing rotation are achieved. The stop washer 4 is inserted into the corresponding mounting groove 75 through the two limiting protrusions 41, and can be installed into the third stepped hole in the front mounting hole 72. When the washer 3 and the stop washer 4 are not connected through the sawtooth surfaces, the washer 3 rotates synchronously with the adjusting knob 1. When the washer 3 and the stop washer 4 are connected through the sawtooth surfaces, and under the action of the spring assembly 5, the elastic force of the spring assembly 5 can make the washer 3, the stop washer 4 and the adjusting knob 1 fully adhere to each other, so that the gap can be effectively eliminated. The stop washer 4 is inserted into the mounting groove 75 through the limiting protrusions 41, and the mounting groove 75 can prevent the stop washer 4 installed in the front mounting hole 72 from rotating. The stop washer 4 can only move forward and backward along the axial direction of the front mounting hole 72 under the action of the spring assembly 5, and cannot rotate, so that the rotation of the washer 3 is limited through the stop washer 4, and the purpose of limiting the rotation of the pin 6 is achieved, so that the limiting and stopping functions are achieved. In the screwing process, the product produces a clicking sound, reminding that the product is in the screwing state, indicating that the washer 3 and the stop washer 4 are in the connected state through the sawtooth surfaces. When the product reaches the best opening and closing position, the clicking sound stops, indicating that the washer 3 and the stop washer 4 are only in contact, and are not connected through the sawtooth surfaces. Because the stop washer 4 and the washer 3 are provided with sawtooth surfaces, the limiting and locking functions are achieved through mutual cooperation. The whole combined part is different from the general quick-release stop pin with a steel ball structure, and has the functions of the general quick-release stop pin, and the limiting and stopping functions are more reliable, so that the quality of the product can be effectively guaranteed.

[0045] Compared with the existing quick-release stop pin, the limiting stop pin 8 is used to replace the existing steel ball, the situation that the steel ball is easily stuck due to protrusion and back-falling can be effectively solved, the surfaces of the washer 3 and the stop washer 4 corresponding to each other are provided with sawtooth surfaces, the washer 3 and the stop washer 4 are connected through the sawtooth surfaces, so that the functions of fixing, limiting and preventing rotation are achieved, and the situation that the steel ball is easily stuck is effectively solved, and the product is more convenient to install and use, and the stop loosening effect is better.

[0046] In summary, the combined part has the advantages that the situation that the steel ball is easily stuck due to protrusion and back-falling is effectively solved, the quality is more stable, the connection is more reliable and convenient, the use requirement can be met, the overall structure is simple, the installation and use are convenient, the practicability is high, and the combined part is suitable for popularization and application.

[0047] The other parts of the utility model are the conventional technology known by the person skilled in the art, and thus are not described in detail.

[0048] The protection scope of the utility model is not limited to the technical solutions disclosed in the specific embodiments, the above is only the preferred embodiment of the utility model, and does not limit the utility model, and any slight modification, equivalent replacement and improvement according to the technical solutions of the utility model should be included in the protection scope of the technical solutions of the utility model.

Claims

1. A quick-release stop pin assembly, characterized in that: The device includes an adjustment knob (1), a plug (2), a washer (3), a stop washer (4), a spring assembly (5), a pin (6), a pin body (7), and a limiting stop pin (8). The pin body (7) has an axial through hole (71) corresponding to the pin (6). A front mounting hole (72) coaxially arranged with the axial through hole (71) is provided at the front end of the pin body (7). A stepped surface (74) is formed between the front mounting hole (72) and the axial through hole (71). A rear mounting hole (73) perpendicular to the axial through hole (71) is provided at the rear end of the pin body (7). The pin (6) is installed in the pin body (7) through the axial through hole (71). The plug... (2) The front end of the front mounting hole (72) is sealed. The adjustment knob (1) passes through the plug (2) and is connected to the pin (6) extending into the front mounting hole (72). The limit stop pin (8) is connected to the pin (6) through the rear mounting hole (73). The washer (3), the stop washer (4) and the spring assembly (5) are sequentially sleeved on the outside of the pin (6) located in the front mounting hole (72). The washer (3) is connected to the adjustment knob (1). The front side of the stop washer (4) is in contact with the washer (3), and the rear side is in contact with the stepped surface (74) at the rear end of the front mounting hole (72) through the spring assembly (5).

2. The quick-release stop pin assembly according to claim 1, characterized in that: The plug (2) is configured as a stepped shaft hole structure with a boss. The front mounting hole (72) includes a first stepped hole, a second stepped hole, and a third stepped hole arranged coaxially in sequence. The front mounting hole (72) forms a stepped hole structure with three stepped surfaces (74) through the first stepped hole, the second stepped hole, and the third stepped hole. The inner diameter of the first stepped hole is larger than the inner diameter of the second stepped hole, and the inner diameter of the second stepped hole is larger than the inner diameter of the third stepped hole. The plug (2) is installed in the first stepped hole, and its boss extends to the second stepped hole. Inside the stepped hole, a mounting groove (75) matching the stop washer (4) is provided on the inner wall of the third stepped hole. The stop washer (4) is installed in the third stepped hole through the mounting groove (75). The adjusting knob (1) passes through the plug (2) and is connected to the pin (6) extending into the front mounting hole (72), and is connected to the washer (3) set in the third stepped hole. The front end of the spring assembly (5) is in contact with the stop washer (4), and its rear end is in contact with the stepped surface (74) at the third stepped hole.

3. A quick-release stop pin assembly according to claim 2, characterized in that: A protrusion (11) is provided at the front end of the adjustment knob (1), and a square connecting hole (12) is provided in the protrusion (11) and a limiting groove is also provided in the protrusion (11); the washer (3) is connected to the adjustment knob (1) through the limiting groove, and a square connecting end (61) corresponding to the square connecting hole (12) is provided at the front end of the pin (6). The pin (6) is inserted into the square connecting hole (12) in the adjustment knob (1) through the square connecting end (61) to realize the connection between the adjustment knob (1) and the pin (6).

4. A quick-release stop pin assembly according to claim 3, characterized in that: Two symmetrically arranged connecting pins (62) are provided at the rear end of the pin rod (6), and the limiting stop pin (8) is composed of two L-shaped stop pin bodies, and each stop pin body is provided with a corresponding connecting pin hole (81) for the connecting pin (62). The two stop pin bodies are connected to the connecting pin (62) in the pin rod (6) through the corresponding connecting pin holes (81). When the pin rod (6) rotates with the adjusting knob (1), it drives the stop pin body in the limiting stop pin (8) to rotate synchronously with the pin rod (6), so that the stop pin body extends outward from the rear mounting hole (73) to the outer surface of the pin body (7), thereby playing a limiting role.

5. A quick-release stop pin assembly according to claim 3, characterized in that: Both the washer (3) and the stop washer (4) are configured as stepped shaft hole structures with bosses. A limiting block is provided on the side of the washer (3) corresponding to the protrusion (11). The washer (3) is inserted into the limiting slot through the limiting block to realize the connection between the washer (3) and the adjusting knob (1). On the outer side of the stop washer (4), a limiting protrusion (41) corresponding to the mounting groove (75) is provided along its circumference. There are two limiting protrusions (41), and the two limiting protrusions (41) are arranged symmetrically. The stop washer (4) is placed on the outer side of the stop washer (4). The stop washer (4) is inserted into the mounting groove (75) through the limiting protrusion (41), and its rear end is in contact with the spring assembly (5) installed in the third step hole. The corresponding surfaces of the washer (3) and the stop washer (4) are provided with serrated surfaces. The washer (3) and the stop washer (4) can be connected by the serrated surfaces. The stop washer (4) restricts the washer (3) from rotating synchronously with the adjusting knob (1), thereby playing a limiting role.

6. A quick-release stop pin assembly according to claim 5, characterized in that: The spring assembly (5) includes an outer spring (51) and an inner spring (52). Both the outer spring (51) and the inner spring (52) are compression springs with the same structure. The inner spring (52) and the outer spring (51) are coaxially sleeved on the outside of the pin (6) located in the front mounting hole (72). The inner spring (52) is located inside the outer spring (51). The front ends of the inner spring (52) and the outer spring (51) are in contact with the stop washer (4), and their rear ends are in contact with the stepped surface (74) at the rear end of the front mounting hole (72).

7. A quick-release stop pin assembly according to claim 1, characterized in that: The rear end face of the adjustment knob (1) is also provided with an inwardly recessed slot or cross slot, which is located at the center of the rear end face of the adjustment knob (1).

Images