Short flat-push three-insurance connector
By optimizing the safety trigger structure and the triple safety design, the problem of excessively long connector length in the hydraulic quick-change device was solved, achieving a more compact and lightweight connector, and improving the excavator's operational performance and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANTAI JIANGTU MECHANICAL EQUIP CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-05
AI Technical Summary
The connectors of existing hydraulic quick-change devices are too long, which affects the excavator's operational flexibility and digging effect, and the unreasonable structural layout leads to increased weight.
A short, flat-push, three-safety connector was designed. By optimizing the safety triggering structure, the slide travel in the traditional design is eliminated. The connector length is controlled solely by the effective stroke of the hydraulic cylinder. A three-safety structure is adopted to ensure safety and stability, including a rear axle safety, a front axle safety, and a movable hook tension spring safety.
The connector length has been significantly shortened, improving the excavator's flexibility and digging depth. The structural layout has been optimized, the weight reduced, and the equipment's compactness and ease of operation enhanced.
Smart Images
Figure CN224199951U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering machinery technology, and in particular to a short-profile push-pull triple safety connector. Background Technology
[0002] In construction machinery such as excavators, hydraulic quick-change devices are crucial components for rapidly changing attachments such as buckets and breakers. Traditional hydraulic quick-change devices typically employ a flat-push, three-safety structure to ensure safety and stability during operation. However, existing technical solutions suffer from the following significant problems:
[0003] Excessive structural length: such as Figure 1 and Figure 2 As shown, existing safety devices require a long slide stroke to trigger the safety function, which not only wastes the effective stroke of the hydraulic cylinder but also increases the overall length of the connector (e.g., Figure 1 The lengths of S1 and S2 are necessary for this structure. The total length of the cylinder plus the lengths of S1 and S2 is the shortest length of the connector. Figure 2 Similarly, S3 and S4 are also important, especially in miniaturized devices (such as 30mm shaft diameter connectors). The lengths of S1 and S2 (S3 and S4) are usually 30mm-50mm, which is too long and reduces the compactness of the device.
[0004] Impact on digging performance: Due to the excessive length of the connector, the installation of the bucket will significantly affect the excavator's operational flexibility and digging depth, thus affecting digging results and reducing work efficiency.
[0005] Design redundancy: In the existing technology, the structural layout of the front axle safety and rear axle safety is not optimized enough. The front end of the hydraulic cylinder must be extended with additional lengths of S1 and S2 (S3 and S4), which leads to increased weight of the device and unreasonable distribution.
[0006] To address the aforementioned issues, there is an urgent need for a new type of hydraulic quick-change device that can significantly shorten the device length and optimize the structural layout while ensuring the triple safety function, thereby improving the overall performance and ease of operation of the equipment.
[0007] Therefore, in view of the shortcomings of the above solution in actual production and implementation, it has been modified and improved. At the same time, in the spirit and concept of seeking the best, with the assistance of professional knowledge and experience, and after much ingenuity and experimentation, a short-length flat-push triple safety connector is specially provided to solve the technical problem of the existing connector being too long and affecting the digging effect. Utility Model Content
[0008] The purpose of this utility model is to provide a short, flat-push, triple-safety connector to solve the technical problem that the existing connectors are too long and affect the digging effect.
[0009] The technical solution of this utility model is implemented as follows:
[0010] A short, flat-push, three-safety connector includes a housing. Inside the housing are a movable hook and a hydraulic cylinder. The hydraulic cylinder includes a cylinder barrel and a piston rod. A first locking mechanism is located at the rear end of the housing. A front safety block and a transmission mechanism are included. A tension spring is connected to the housing and is connected to the movable hook. A rear safety block, which mates with the first locking mechanism, is connected to the bottom of the cylinder barrel. A compression spring baffle is located inside the housing, and a compression spring is positioned between the compression spring baffle and the rear safety block. The transmission mechanism includes a triggering device push rod, a front safety triggering device, and a safety device push rod. The end of the triggering device push rod is connected to the piston rod via a first connecting shaft. The front safety... The two ends of the triggering device are respectively rotatably connected to the triggering device push rod and the safety device push rod. The other end of the safety device push rod is rotatably connected to the front safety block via a third connecting shaft. The front safety block cooperates with the second jaw at the bottom of the movable hook. The outer side wall of the movable hook is provided with an elongated hole and two sets of connecting holes. The two ends of the first connecting shaft are provided to cooperate with the elongated hole. The middle part of the front safety triggering device is provided with a second connecting shaft with both ends cooperating with the connecting holes. The two ends of the third connecting shaft are respectively cooperating with another set of connecting holes. A torsion spring is provided on the third connecting shaft, and the two ends of the torsion spring abut against the housing and the front safety block respectively.
[0011] In a preferred embodiment, the top of the movable hook is provided with a tension spring mounting post, the front end of the tension spring is connected to the front part of the housing, and the rear part of the tension spring is connected to the tension spring mounting post.
[0012] In a preferred embodiment, the rear safety block is provided with a compression spring mounting hole for connection with the compression spring, and the outer end of the cylinder is provided with a slide rail.
[0013] In a preferred embodiment, the front safety block is provided with a front safety limiting groove, and the inner side of the movable hook is provided with a front safety limiting post that cooperates with the front safety limiting groove.
[0014] In a preferred embodiment, the connecting hole includes a first connecting hole and a second connecting hole, the outer end of the second connecting shaft engages with the first connecting hole, the outer end of the third connecting shaft engages with the second connecting hole, and the second connecting hole is located below the elongated hole.
[0015] In a preferred embodiment, a torsion spring stop is provided on the inner side of the front end of the housing, and one end of the torsion spring is locked in the torsion spring stop.
[0016] This plan has a triple insurance structure:
[0017] First safety measure: Rear axle safety measure. The extension of the rear safety block of the hydraulic cylinder forms a constriction with the first jaw at the lower end of the housing. This constriction is smaller than the shaft diameter that fits here, locking the rear axle to prevent it from falling off.
[0018] Second safety: front axle safety. By rotating the front safety downwards, a constriction is formed at the second web of the movable hook tip. This constriction is smaller than the shaft diameter that fits here, locking the front axle to prevent it from falling off.
[0019] The third safety measure is the tension spring connected to the movable hook. This spring always has a pulling force that pulls the movable hook forward, preventing the movable hook from moving backward and detaching from the front axle if the hydraulic cylinder breaks.
[0020] Technical points for achieving triple insurance:
[0021] Rear axle safety: The safety is extended and retracted by means of hydraulic cylinder extension and retraction, movable hook and rear end limit of housing slide groove, and rear safety spring device;
[0022] Front axle safety: The movable hook spring, the front safety torsion spring, and the front axle of the hydraulic cylinder slide back and forth in the hydraulic cylinder shaft slide, which drives the triggering device to push the connecting rod and the front safety triggering device. The front safety triggering device rotates, which drives the safety device to push the connecting rod, and the pushing connecting rod drives the front safety to rotate, extend and retract.
[0023] Note: The movable hook tension spring has a greater tension than the front safety torsion spring when in operation.
[0024] The third safety feature is the movable hook tension spring, with one end fixed to the front of the housing and the other end fixed to the movable hook. It always exerts a forward pulling force on the movable hook. The pull force of the movable hook is overcome by the retraction of the hydraulic cylinder, causing the hook to move backward.
[0025] See Figure 1 , Figure 2 The main shortcomings of existing technologies are as follows: Figure 1 The structure of the safety device shown requires a large slide travel distance to trigger, which wastes the effective stroke of the hydraulic cylinder; the lengths of S1 and S2 are necessary for this structure, and the total length of the hydraulic cylinder plus the lengths of S1 and S2 is the shortest length of the connector.
[0026] Figure 2 The lengths of S1 and S2 must be added to the front end of the cylinder shown, which limits the length of the connector. This type of connector will result in the overall length of the connector being too large, which will affect digging after the bucket is loaded.
[0027] And see Figure 6 The text displays F, which is equivalent to... Figure 1 , two The length of S2 eliminates the need for the necessary length of S1, allowing the overall length of the connector to be shortened. This length of S1 is 30mm-50mm in the standard smallest (30mm shaft diameter) connector.
[0028] In the design of the second safety device in this solution, the front safety shaft is located behind the cylinder shaft. The only factor affecting the length of the entire connector is the stroke of the cylinder, which can effectively control the length of the entire connector, resulting in a more reasonable distribution and reduced weight.
[0029] Therefore, the connector provided by the present invention has the following significant advantages compared with the prior art:
[0030] Significantly reduced overall length: By optimizing the safety trigger structure, the slide travel (such as S1) required in traditional designs is eliminated, so that the length of the connector depends only on the effective stroke of the cylinder, thereby achieving a compact design of the device, especially suitable for miniaturized equipment (such as 30mm shaft diameter connectors), and the overall length can be reduced by 30-50mm.
[0031] Improved excavator operation performance: The shortened connector reduces the overall size after the bucket is installed, improving the excavator's flexibility and digging depth, and increasing work efficiency.
[0032] The triple insurance function is reliable:
[0033] Rear axle safety: Through the extension and retraction of the hydraulic cylinder and the cooperation between the rear safety block and the housing, a reliable sealing structure is formed to prevent the rear axle from falling off.
[0034] Front axle safety: The front axle is locked by using a movable hook spring, a front safety torsion spring, and a linkage triggering device, and the tension of the spring is greater than that of the torsion spring to ensure operational stability.
[0035] The third safety feature is the continuous forward tension spring on the movable hook, which prevents the movable hook from shifting backward and detaching from the shaft even if the hydraulic cylinder breaks, further enhancing safety.
[0036] As an alternative, a large compression spring is used on the three-safety hydraulic cylinder to replace the movable hook tension spring device, so that the movable hook always has a forward thrust, which can achieve the same effect.
[0037] Structural optimization and lightweighting: By rationally arranging the safety devices and reducing redundant structures, not only is the overall weight reduced, but the stress distribution is also optimized, extending the service life of the devices.
[0038] In summary, this invention significantly shortens the overall length while ensuring safety and functionality, improves the performance, and achieves miniaturization, lightweighting, and high efficiency of the connector, effectively solving the technical problem of excessively long connectors that affect excavation results. Attached Figure Description
[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0040] Figure 1 Schematic diagram of existing technology Figure 1 ;
[0041] Figure 2 Schematic diagram of existing technology Figure 2 ;
[0042] Figure 3 This is a structural schematic diagram of an embodiment of the present utility model;
[0043] Figure 4 for Figure 3 The front view;
[0044] Figure 5 for Figure 4 Internal structure diagram;
[0045] Figure 6 for Figure 5 Internal structure diagram;
[0046] Figure 7 for Figure 6 Schematic diagram of the hydraulic cylinder tightening state;
[0047] Figure 8 for Figure 6 Internal structure diagram;
[0048] Figure 9 This is a schematic diagram of the structure of the hydraulic cylinder of this utility model;
[0049] Figure 10 This is a front view of the movable hook of this utility model;
[0050] Figure 11 This is a schematic diagram of the transmission mechanism of this utility model. Figure 1 ;
[0051] Figure 12 This is a schematic diagram of the transmission mechanism of this utility model. Figure 2 ;
[0052] Figure 13 This is the three-dimensional structural design intent of the movable hook of this utility model;
[0053] Figure 14 This is a partial structural schematic diagram of the present invention.
[0054] In the diagram, 1-housing; 2-movable hook; 3-first gripper; 4-front safety block; 5-second gripper; 6-tension spring; 7-first connecting shaft; 8-third connecting shaft; 9-elongated hole; 10-second connecting shaft; 11-piston rod; 12-cylinder; 13-compression spring; 14-torsion spring; 15-compression spring baffle; 16-rear end of housing slide groove; 17-rear safety block; 18-slide path; 19-compression spring mounting hole; 20-tension spring mounting post; 21-front safety limiting groove; 22-trigger device push rod; 23-front safety trigger device; 24-safety device push rod; 25-front safety limiting post; 26-torsion spring stop; 27-second connecting hole. Detailed Implementation
[0055] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0056] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0057] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.
[0058] In the description of the embodiments, unless otherwise expressly specified and limited, the terms "set," "connect," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or a connection through an intermediate medium, or it can be a connection within 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.
[0059] A short, flat-push, three-safety connector includes a housing 1. Inside the housing 1 are a movable hook 2 and a hydraulic cylinder. The hydraulic cylinder includes a cylinder barrel 12 and a piston rod 11. A first locking jaw 3 is located at the rear end of the housing 1. A front safety block 4 and a transmission mechanism are included. A tension spring 6 is connected to the housing 1 and is connected to the movable hook 2. A rear safety block 17, which mates with the first locking jaw 3, is connected to the bottom of the cylinder barrel 12. A compression spring baffle 15 is located inside the housing 1. A compression spring 13 is positioned between the compression spring baffle 15 and the rear safety block 17. The transmission mechanism includes a triggering device push link 22, a front safety triggering device 23, and a safety device push link 24. The end of the triggering device push link 22 is connected to the piston rod 11 via a first connecting shaft 7. The two ends of the front safety trigger device 23 are rotatably connected to the trigger device push link 22 and the safety device push link 24, respectively. The other end of the safety device push link 24 is rotatably connected to the front safety block 4 via the third connecting shaft 8. The front safety block 4 cooperates with the second tiger mouth 5 at the bottom of the movable hook 2. The outer side wall of the movable hook 2 is provided with an elongated hole 9 and two sets of connecting holes. The two ends of the first connecting shaft 7 are provided to cooperate with the elongated hole 9. The middle part of the front safety trigger device 23 is provided with a second connecting shaft 10 whose two ends cooperate with the connecting holes. The two ends of the third connecting shaft 8 are respectively cooperated with another set of connecting holes. A torsion spring 14 is provided on the third connecting shaft 8. The two ends of the torsion spring 14 abut against the housing 1 and the front safety block 4, respectively.
[0060] The top of the movable hook 2 is provided with a tension spring mounting post 20. The front end of the tension spring 6 is connected to the front of the housing 1, and the rear end of the tension spring 6 is connected to the tension spring mounting post 20.
[0061] The rear safety block 17 is provided with a spring mounting hole 19 for connecting with the spring 13, and the outer end of the cylinder 12 is provided with a slide 18.
[0062] The front safety block 4 is provided with a front safety limiting groove 21, and the inner side of the movable hook 2 is provided with a front safety limiting post 25 that cooperates with the front safety limiting groove 21.
[0063] The connecting holes include a first connecting hole and a second connecting hole 27. The outer end of the second connecting shaft 10 is engaged with the first connecting hole, and the outer end of the third connecting shaft 8 is engaged with the second connecting hole 27. The second connecting hole 27 is located below the elongated hole 9.
[0064] A torsion spring stop 26 is provided on the inner side of the front end of the housing 1, and one end of the torsion spring 14 is locked in the torsion spring stop 26.
[0065] This plan has a triple insurance structure:
[0066] First safety measure: rear axle safety measure. The extension of the rear safety block 17 of the hydraulic cylinder forms a constriction with the first jaw 3 at the lower end of the housing 1. This constriction is smaller than the shaft diameter that fits here, locking the rear axle to prevent it from falling off.
[0067] Second safety: front axle safety. By rotating the front safety downwards, a constriction is formed at the tip of the movable hook 2 at the second tiger's mouth 5. This constriction is smaller than the shaft diameter that fits here, locking the front axle to prevent it from falling off.
[0068] The third safety measure is the tension spring 6 connected to the movable hook 2. This tension spring 6 always has a pulling force that pulls the movable hook 2 forward, preventing the movable hook 2 from moving backward and detaching from the front axle without being pushed after the hydraulic cylinder breaks.
[0069] Technical points for achieving triple insurance:
[0070] Rear axle safety: The safety is extended and retracted by means of the extension and retraction of the hydraulic cylinder, the movable hook 2 is limited by the rear end 16 of the housing slide groove, and the rear safety spring 13 device realizes the extension and retraction of the safety.
[0071] Front axle safety: The movable hook 2, tension spring 6, front safety torsion spring 14, and the front axle of the hydraulic cylinder slide back and forth in the hydraulic cylinder shaft slide 18, which drives the triggering device to push the connecting rod 22 and the front safety triggering device 23. The front safety triggering device 23 rotates, which drives the safety device to push the connecting rod 24. The pushing connecting rod drives the front safety to rotate, extend and retract.
[0072] Note: The tension of the movable hook 2 spring 6 is greater than that of the front safety torsion spring 14 when it is in operation.
[0073] The third safety measure is the tension spring 6 on the movable hook 2, with one end fixed to the front end of the housing 1 and the other end fixed to the movable hook 2, which always exerts a forward pulling force on the movable hook 2. The pull force of the movable hook 2 is overcome by the retraction of the hydraulic cylinder, causing the hook to move backward.
[0074] See Figure 1 , Figure 2 The main shortcomings of existing technologies are as follows: Figure 1 The structure of the safety device shown requires a large travel distance of slide 18 to trigger, which wastes the effective travel of the hydraulic cylinder; the lengths of S1 and S2 are necessary for this structure, and the total length of the hydraulic cylinder plus the lengths of S1 and S2 is the shortest length of the connector.
[0075] Figure 2 The lengths of S1 and S2 must be added to the front end of the cylinder shown, which limits the length of the connector. This type of connector will result in the overall length of the connector being too large, which will affect digging after the bucket is loaded.
[0076] And see Figure 6 The text displays F, which is equivalent to... Figure 1 , two The length of S2 eliminates the need for the necessary length of S1, allowing the overall length of the connector to be shortened. This length of S1 is 30mm-50mm in the standard smallest (30mm shaft diameter) connector.
[0077] In the design of the second safety device in this solution, the front safety shaft is located behind the cylinder shaft. The only factor affecting the length of the entire connector is the stroke of the cylinder, which can effectively control the length of the entire connector, resulting in a more reasonable distribution and reduced weight.
[0078] in, Figure 7 In this state, tension spring 6 is in the stretched state, and compression spring 13 is in the compressed state.
[0079] Figures 1-13 In the diagram, the left side is designated as the front side, and the right side as the back side.
[0080] Therefore, the connector provided by the present invention has the following significant advantages compared with the prior art:
[0081] Significantly reduced overall length: By optimizing the safety trigger structure, the slide 18 stroke (such as S1) required in traditional designs is eliminated, so that the length of the connector depends only on the effective stroke of the cylinder, thereby achieving a compact design of the device, especially suitable for miniaturized equipment (such as 30mm shaft diameter connectors), and the overall length can be reduced by 30-50mm.
[0082] Improved excavator operation performance: The shortened connector reduces the overall size after the bucket is installed, improving the excavator's flexibility and digging depth, and increasing work efficiency.
[0083] The triple insurance function is reliable:
[0084] Rear axle safety: A reliable closing structure is formed by the extension and retraction of the hydraulic cylinder and the cooperation between the rear safety block 17 and the housing 1 to prevent the rear axle from falling off.
[0085] Front axle safety: The front axle is locked by using the movable hook 2, tension spring 6, front safety torsion spring 14 and linkage triggering device, and the tension of tension spring 6 is greater than that of torsion spring 14 to ensure working stability.
[0086] The third safety feature is that the movable hook 2 and the tension spring 6 always provide forward tension, which can prevent the movable hook 2 from moving backward and detaching from the shaft even if the hydraulic cylinder breaks, further improving safety.
[0087] As an alternative, a large compression spring 13 is used on the three-safety hydraulic cylinder to replace the tension spring 6 of the movable hook 2, so that the movable hook 2 always has a forward thrust, which can achieve the same effect.
[0088] Structural optimization and lightweighting: By rationally arranging the safety devices and reducing redundant structures, not only is the overall weight reduced, but the stress distribution is also optimized, extending the service life of the devices.
[0089] In summary, this invention significantly shortens the overall length while ensuring safety and functionality, improves the performance, and achieves miniaturization, lightweighting, and high efficiency of the connector, effectively solving the technical problem of excessively long connectors that affect excavation results.
[0090] In this design, when the hydraulic cylinder contracts, the state is as follows: Figure 7 , Figure 12 At this moment, the piston rod 11 moves to the right with the movable hook 2, the bottom of the front safety block 4 is flat, and the first gripper 3 loses the limiting effect of the front safety block 4; the cylinder 12 moves to the left with the rear safety block 17, and the second gripper 5 loses the limiting effect of the rear safety block 17, and the entire device is in an open state. At this time, the tension spring 6 is stretched, and the compression spring 13 is pressed.
[0091] When the hydraulic cylinder extends, see Figure 4-6 , Figure 8 At this point, the state is the opposite of the above. The front safety block 4 at the first tiger's mouth 3 has a limiting effect, and the rear safety block 17 at the second tiger's mouth 5 has a limiting effect. The two states are switched by the extension and retraction of the hydraulic cylinder.
[0092] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.
Claims
1. A short, flat-push, three-safety connector, comprising a housing, wherein a movable hook and a hydraulic cylinder are disposed within the housing, the hydraulic cylinder comprising a cylinder barrel and a piston rod, and a first gripper opening is provided at the rear end of the housing, characterized in that, The system includes a front safety block and a transmission mechanism. A tension spring is connected to the housing, and the tension spring is connected to a movable hook. A rear safety block that mates with a first locking mechanism is connected to the bottom of the cylinder. A compression spring baffle is installed inside the housing, and a compression spring is installed between the compression spring baffle and the rear safety block. The transmission mechanism includes a triggering device push rod, a front safety triggering device, and a safety device push rod. The end of the triggering device push rod is connected to a piston rod via a first connecting shaft. The two ends of the front safety triggering device are respectively connected to the triggering device push rod and the safety device push rod for rotation. The safety device pushes the other end of the connecting rod to the front safety block via a third connecting shaft. The front safety block engages with the second jaw at the bottom of the movable hook. The outer side wall of the movable hook is provided with an elongated hole and two sets of connecting holes. The two ends of the first connecting shaft are provided to engage with the elongated hole. The middle part of the front safety triggering device is provided with a second connecting shaft with both ends engaging with the connecting holes. The two ends of the third connecting shaft are respectively engaged with another set of connecting holes. A torsion spring is provided on the third connecting shaft, and the two ends of the torsion spring abut against the housing and the front safety block respectively.
2. The short-profile push-pull triple-safety connector according to claim 1, characterized in that, The top of the movable hook is provided with a tension spring mounting post, the front end of the tension spring is connected to the front part of the housing, and the rear part of the tension spring is connected to the tension spring mounting post.
3. The short-profile push-pull triple-safety connector according to claim 1, characterized in that, The rear safety block is provided with a compression spring mounting hole for connection with the compression spring, and the outer end of the cylinder is provided with a slide rail.
4. The short-profile push-pull triple-safety connector according to claim 1, characterized in that, The front safety block is provided with a front safety limiting groove, and the inner side of the movable hook is provided with a front safety limiting post that cooperates with the front safety limiting groove.
5. The short-profile push-pull triple-safety connector according to claim 1, characterized in that, The connecting holes include a first connecting hole and a second connecting hole. The outer end of the second connecting shaft mates with the first connecting hole, and the outer end of the third connecting shaft mates with the second connecting hole. The second connecting hole is located below the elongated hole.
6. The short-profile push-pull triple-safety connector according to claim 1, characterized in that, A torsion spring stop is provided on the inner side of the front end of the housing, and one end of the torsion spring is locked in the torsion spring stop.