Handle structure with spiral curved locking

Abstract

The application discloses a handle structure with a spiral curved surface lock, which is used for locking a plug and a socket of a fluid connector, a handle accessory of the handle structure is connected to the plug through a shaft pin, the handle accessory comprises a locking part, a spiral curved surface for guiding a locking column on the socket is arranged on the locking part, and a locking groove for fixing the locking column is arranged on the locking part, the locking groove is connected with the spiral curved surface, a convex part is arranged at a position where the spiral curved surface transitions to the locking groove, and the locking column is connected to the locking part from the bottom to the top of the handle structure; the force applying mode from the bottom to the top of the application overcomes the self-locking in the connecting process of the existing structure, thereby overcoming the defect that the connection is stuck; the structure that the inflection point is added in the locking groove ensures the locking, prevents the self-unlocking phenomenon from occurring in the use process, and overcomes the defect that the locking shakes through the limiting structure.

Description

Technical Field

[0001] This invention relates to the field of fluid connectors, and more specifically to a handle structure with a helical curved surface locking mechanism. Background Technology

[0002] In the field of construction machinery, connectors are large and heavy to match heavy-duty trucks, and their high mounting position on the vehicle necessitates the use of a power assist mechanism for connection. However, due to vehicle layout limitations, the operating space for this mechanism is extremely limited. Ordinary power assist mechanisms have large operating spaces and short connection strokes, making them unsuitable for this condition.

[0003] Especially for fluid connectors, the plug has a very large mass due to the fluid. During the locking process of traditional locking mechanisms, the fluid connector often self-locks due to the weight of the fluid and the plug, making it impossible to complete the normal locking and conduction function. Summary of the Invention

[0004] The purpose of this invention is to design a handle structure that takes into account the special operating conditions of heavy-duty trucks in engineering machinery. This handle structure can achieve a long connection stroke within a limited operating range, and effectively resist the sinking resistance of the product's own weight and the large product connection force, ensuring a smooth connection.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A handle structure with a helical curved locking mechanism is disclosed for locking the plug and socket of a fluid connector. An accessory at the end of the handle is connected to the plug via a pivot pin, the accessory including a locking portion. The locking part is provided with a helical curved surface for guiding the locking pin on the socket, and a locking groove for fixing the locking pin. The locking groove and the helical curved surface are connected to each other, and the position where the helical curved surface transitions to the locking groove is set as a protrusion. The handle guides the locking part from bottom to top to connect to the locking pin.

[0006] In the above technical solution, the plug is provided with a limiting component, the limiting component includes a limiting post, and the limiting post is in contact with the locking part.

[0007] In the above technical solution, the locking part is provided with a limiting surface with two limiting ends, and the limiting post is in contact with the limiting surface.

[0008] In the above technical solution, the limiting surface is an arc surface, and the handle slides around the limiting post through the limiting surface.

[0009] In the above technical solution, the limiting component includes a limiting seat, and the surface of the limiting seat is in contact with the locking part.

[0010] In the above technical solution, the limiting seat is provided with a through hole, and a spring and a ball bearing with a diameter larger than the through hole are provided in the through hole. The locking part is provided with a locking groove, and the ball bearing can engage with the locking groove.

[0011] In the above technical solution, the limiting post in the limiting assembly is set on the limiting seat, the locking part is in contact with the surface opposite to the limiting seat, and the limiting post is in contact with the side of the locking part.

[0012] In the above technical solution, locking grooves are respectively provided on the two sections of the locking part corresponding to the limiting seat.

[0013] In the above technical solution, the handle has a symmetrical structure, including two support arms and a push rod connecting the two support arms, and the accessories at the ends of the support arms are respectively connected to the symmetrical sides of the plug.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: First, the stress conditions on the plug were changed. Traditional fluid connectors are very heavy due to the combined weight of the plug itself and the fluid inside. The traditional top-down locking method causes the plug to be subjected to two vertically downward forces after the locking mechanism is activated. This excessive force causes the plug to self-lock.

[0015] The present invention sets a locking structure on the plug, which applies a locking force to the socket from bottom to top. This force can overcome the weight of the plug itself and the gravity of the fluid, thereby reducing the force of the plug itself, avoiding self-locking inside the plug, and smoothly completing the connection with the socket.

[0016] II. The locking method has been changed. Traditional slot locking mechanisms can detach under heavy gravity. This solution uses a spiral curved surface to guide the locking structure and a locking groove for locking. A protruding inflection point is added between the locking groove and the spiral curved surface to prevent the locking post from detaching, thus perfectly solving the connector locking problem.

[0017] Third, the problems of travel and shaking in the locking structure have been solved. This solution successfully solves the problem of handle wobbling encountered in engineering applications by adding a limiting component, using ball bearings to limit the wobbling of the locking parts, and using a limiting post to limit the stroke of the locking part. It also successfully solves the problem of safe operating space for the handle. Attached Figure Description

[0018] The present invention will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the overall structure of the handle on the fluid connector; Figure 2 This is an exploded view of the plug and handle structure; Figure 3 This is a structural diagram of the handle attachment; Figure 4 This is a force diagram at the inflection point; Figure 5 This is a structural diagram of the locking part and the limiting seat; Figure 6 This is a structural diagram of the handle during the plug-socket connection process; Wherein: 1 is socket, 2 is plug, 3 is handle, 4 is accessory, 5 is locking pin, 6 is locking part, 6-1 is locking groove, 6-2 is inflection point, 6-3 is spiral surface, 6-4 is limit groove, 6-5 is limit surface, 7 is limit component, 7-1 is spring, 7-2 is ball, 7-3 is limit seat, 7-4 is limit pin, and 8 is shaft pin. Detailed Implementation

[0019] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0020] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0021] like Figure 1 As shown, the handle structure in this embodiment is mainly used in fluid connectors because fluid connectors are filled with fluid, resulting in a relatively large weight. Therefore, in this embodiment, the handle 3 is placed on the plug 2, and the locking pin 5 is placed on the socket 1. The handle 3 is pushed from bottom to top, and the force of the circular rotation of the handle 3 is converted into a horizontal force using the attachment 4 to connect the socket 1 and the plug 2. Then, the locking pin 5 is locked.

[0022] like Figure 2 As shown, in this embodiment, the handle 3 adopts a symmetrical structure and is provided with a push rod 3-1. Support arms are connected to both ends of the push rod 3-1, and an accessory 4 is connected to the end of each support arm. A locking part 6 is provided on the inner side of the accessory. The entire handle 3 is symmetrically connected to the plug 2. A user-connected shaft pin 8 and a limiting component 7 are respectively provided at the connection point of the handle 3 to the plug 2. The shaft pin 8 is movably connected to the accessory 4 and the locking part 6. Pushing the push rod 3-1 can cause the accessory 4 and the locking part 6 to rotate around the shaft pin 8. The limiting component 7 is used to contact the locking part 6, limiting the pushing stroke of the handle 3 and restricting the positioning of the handle 3 to prevent the handle 3 from shaking.

[0023] like Figure 3 The diagram shows the locking part 6 structure of this embodiment, which is also the most important structural component in this embodiment. It can solve the problem of locking the fluid connector under heavy mass conditions. The entire locking part 6 is integrally machined. A slotted structure for limiting the locking post 5 is provided on the locking part 6. This slotted structure includes three parts: The front part is a spiral surface 6-3 for guiding the sliding of the locking pin 5. The spiral surface 6-3 is a smooth surface, which can generate a rolling force through the surface when it comes into contact with the locking pin 5, so that the locking pin 5 can slide along the extension direction of the spiral surface 6-3.

[0024] The rear section is a locking groove 6-1, which is an arc groove. When the locking pin 5 enters, the size and structure of the two parts match each other, ensuring that the locking groove 6-1 wraps around the locking pin 5, thus limiting its position.

[0025] A protruding inflection point 6-2 is provided between the locking groove 6-1 and the helical surface 6-3. This inflection point 6-2 is a protrusion used to connect the helical surface 6-3 to the locking groove 6-1. After the locking pin 5 enters the locking groove 6-1 through the inflection point, sufficient force is required for the locking pin 5 to complete a climbing motion and pass over the inflection point before it can exit the locking groove 6-1. However, due to the force characteristics of the fluid connector, without external force, it is impossible for the locking part 6 to allow the locking pin 5 to detach from the locking groove 6-1 on its own. Figure 4 As shown, for the self-detachment to occur, a horizontal force F1 must first pull the socket and plug apart. F1 acts on the locking pin 5 through the locking part 6, generating a component force F2 at the inflection point of the locking pin 5. The resultant force of the two forces is vertically upward. Therefore, in the absence of external force, the resultant force on the inflection point 6-2 of the locking part 6 always presses the locking pin 5 upward, so the locking pin 5 will not fall out of the locking groove 6-1.

[0026] As the locking part 6 rotates, it contacts and engages with the limiting component 7 on the plug, thus limiting the locking part 6 and the entire handle 3. The limiting component 7 includes a limiting seat 7-3 disposed on the plug 2, such as... Figure 2 The exploded view of the limiting component 7 is shown within the red dashed box. A through hole is provided on the limiting seat 7-3, and a spring 7-1 and a ball bearing 7-2 are installed inside the through hole. The diameter of the through hole is larger than that of the ball bearing 7-2. The spring 7-1 can hold the ball bearing 7-2 in the through hole, or pressure can be used to retract the ball bearing 7-2 into the through hole. A limiting post 7-4 is also provided on the limiting seat 7-3.

[0027] like Figure 3 and Figure 5As shown, when the locking part 6 is in contact with the limiting component 7, two limiting grooves 6-4 are provided on the contact surface between the locking part 6 and the limiting seat 7-3. The ball 7-2 can be squeezed into the limiting groove 6-4 by the spring 7-1. The limiting groove 6-4 and the ball 7-2 can lock the position of the locking part 6 to prevent the locking part 6 from wobbling left and right; at the same time, as in the force analysis above, when there is no external force, the ball 7-2 will provide a locking force to the locking part 6, which can prevent the locking pin 5 from falling out of the locking groove 6-1.

[0028] like Figure 5 As shown, a limiting surface 6-5 is provided on the outer side of the locking part 6. The limiting surface 6-5 has limiting structures at both ends. When the limiting post 7-4 on the limiting seat 7-3 is inserted into the limiting surface 6-5, the limiting post can only move within the stroke range of the limiting surface 6-5, thereby preventing the locking part 6 from failing to lock due to excessive stroke during rotation.

[0029] like Figure 6 As shown, the locking part 6 engages with the locking pin 5 during the locking process, which is a process in which the rotational force of the fluid connector plug and socket is converted from bottom to top into a horizontal force through the handle. This process uses the handle to overcome the weight of the plug itself and prevent the plug from self-locking under its own weight.

[0030] This invention is not limited to the specific embodiments described above. The invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A handle structure with a helical curved surface locking mechanism for locking the plug and socket of a fluid connector, characterized in that: An accessory at the end of the handle is connected to the plug via a pivot pin; the accessory includes a locking mechanism. The locking part is provided with a helical curved surface for guiding the locking pin on the socket, and a locking groove for fixing the locking pin. The locking groove and the helical curved surface are connected to each other, and the position where the helical curved surface transitions to the locking groove is set as a protrusion. Guide the handle upwards to connect the locking part to the locking pin.

2. The handle structure with helical curved surface locking according to claim 1, characterized in that: The plug is provided with a limiting component, which includes a limiting post that contacts the locking part.

3. The handle structure with helical curved surface locking according to claim 2, characterized in that: The locking part is provided with a limiting surface with two limiting ends, and the limiting post is in contact with the limiting surface.

4. The handle structure with helical curved surface locking according to claim 3, characterized in that: The limiting surface is an arc surface, and the handle slides around the limiting post through the limiting surface.

5. The handle structure with helical curved surface locking according to claim 2, characterized in that: The limiting component includes a limiting seat, the surface of which contacts the locking part.

6. The handle structure with helical curved surface locking according to claim 5, characterized in that: The limiting seat is provided with a through hole, and a spring and a ball bearing with a diameter larger than the through hole are provided inside the through hole. The locking part is provided with a locking groove, and the ball bearing can engage with the locking groove.

7. A handle structure with a spiral curved surface locking mechanism according to claim 2 or 5, characterized in that: The limiting post in the limiting assembly is set on the limiting seat, the locking part is in contact with the surface opposite to the limiting seat, and the limiting post is in contact with the side of the locking part.

8. The handle structure with helical curved surface locking according to claim 7, characterized in that: Locking grooves are provided on two sections of the locking part corresponding to the limiting seat.

9. The handle structure with helical curved surface locking according to claim 1, characterized in that: The handle has a symmetrical structure, including two arms and a push rod connecting the two arms. The accessories at the ends of the arms are respectively connected to the symmetrical sides of the plug.

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