A handle mechanism with a ratchet lock

Abstract

The application discloses a handle mechanism with a ratchet lock, which is used for locking the socket and the plug of a fluid connector. The end of the handle is connected to the plug through a shaft pin. The end comprises a locking part. A gear is arranged on the locking part and is used for engaging with a rack arranged on the socket. The handle guides the gear of the locking part to connect the rack from the bottom to the top. The application adopts the structure of the gear and the rack to lock. The horizontal pulling force is generated by the principle of the engagement of the gear and the rack, so that the locking of the plug and the socket is easier. Compared with the extrusion force generated by the circular arc rotation, the horizontal force can ensure the smooth connection of the connector. The application overcomes the self-locking in the connection process of the existing structure, so as to avoid the defect that the connection is stuck. The limiting part is arranged on the plug, the sliding part is arranged on the handle, and the sliding part and the limiting part are mutually buckled to ensure the locking and prevent the self-unlocking phenomenon in the use process.

Description

Technical Field

[0001] This invention relates to the field of fluid connectors, and more specifically to a handle mechanism with ratchet locking. 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 mechanism with a ratchet locking mechanism for locking the socket and plug of a fluid connector. The end of the handle is connected to the plug via a pivot pin, and the end includes a locking part. The locking part is provided with a gear for engaging with a rack provided on the socket. Guide the handle upwards from the bottom to the gear connecting the rack of the locking part.

[0006] In the above technical solution, the plug is provided with a limiting component, and the handle is provided with a sliding component, which is engaged with the limiting component.

[0007] In the above technical solution, the limiting member shown includes two limiting grooves, and the sliding member can slide from one limiting groove into the other limiting groove under the action of external force.

[0008] In the above technical solution, the handle includes a push rod and support arms symmetrically connected to both ends of the push rod. A groove is provided along the longitudinal direction of the support arm, and a sliding block is provided in the cavity. A protruding locking head is provided at the end of the sliding block, and the locking head engages with a limiting member. A rotatable pull rod is coaxially mounted on the push rod, and the pull rod is connected to the sliding block by a traction rope.

[0009] In the above technical solution, a step is provided in the groove to limit the displacement of the sliding block, and a spring is provided between the sliding block and the step.

[0010] In the above technical solution, the sliding block is provided with an inner cavity, and one end of the traction rope passes through the spring and is connected to the bottom of the cavity.

[0011] In the above technical solution, the end of the sliding block is provided with a countersunk hole, the countersunk hole is coaxial with the cavity, and the spring is disposed between the countersunk hole and the step.

[0012] In the above technical solution, the locking head protrudes along the vertical surface of the sliding block to the outside of the locking part and engages with the limiting member.

[0013] In the above technical solution, the locking head contacts the limiting block, and one of the contact surfaces of the locking head is an arc surface.

[0014] In the above technical solution, the limiting member is disposed between the locking part and the plug, the limiting member is fixedly connected to the plug, and the locking part is connected to the plug through the limiting member by a shaft pin.

[0015] 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.

[0016] This invention employs a gear and rack structure for locking, utilizing the meshing principle of gears and racks to generate horizontal tension, thereby making it easier to lock the plug and socket. Compared to the squeezing force generated by circular rotation, the horizontal force is more likely to ensure a smooth connection of the connector.

[0017] II. The locking method has been changed. The handle position is limited and locked by interlocking with each other in the structure, and the handle is pulled by a steel rope, which increases the reliability of the limit locking from the physical structure and improves the locking efficiency.

[0018] In this invention, the setting of traction steel rope and spring enables the limit lock to have an automatic reset function. Therefore, the locking limit component will not fall off without the action of external force, and the locking effect is very good. Attached Figure Description

[0019] The present invention will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a diagram showing the connection of a plug and socket; Figure 2 This is a structural diagram of the socket and handle; Figure 3 This is a schematic diagram of the positional structure between the handle and the limit block; Figure 4 This is a schematic diagram of the sliding block in the hand; Figure 5 This is a structural schematic diagram of the limiting component; Figure 6 This is a schematic diagram of the plug structure locking mechanism; Figure 7 This is a schematic diagram of the plug structure unlocking; Figure 8 This is a schematic diagram of the unlocking process of the plug structure; Figure 9 This is a schematic diagram of the plug structure after unlocking; Wherein: 1 is the plug, 2 is the socket, 3 is the handle, 31 is the gear, 32 is the locking head, 321 is the sliding surface, 322 is the stop surface, 331 is the cavity, 332 is the countersunk hole, 33 is the sliding block, 34 is the spring, 35 is the step, 36 is the traction rope, 37 is the push rod, 38 is the pull rod, 4 is the rack, 5 is the limit block, 51 is the first limit groove, and 52 is the second limit groove. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] 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 set on the plug 2, and the rack 4 is set on the socket 1. The gear on the handle 3 meshes with the rack 4 to generate a thrust in the horizontal direction, thereby connecting and locking the plug 2 and the socket 1.

[0023] like Figure 2 As shown, in this embodiment, the handle 3 adopts a symmetrical structure, including a push rod 37 and a pull rod 38 coaxially arranged with the push rod 37. The pull rod 38 can rotate around the push rod 37 under the action of external force. Support arms are respectively connected to both ends of the push rod 37, and locking parts are provided at the ends of the support arms. The locking parts are connected to the plug 2 through a shaft pin.

[0024] like Figure 3 As shown, a gear 31 is provided on the locking part, which meshes with the rack 4, and the force generated by the meshing drives the plug 2 to connect with the socket 1. A groove is provided along the extension of the support arm connected to the locking part, and a sliding block 33 is provided in the groove, which can slide. To show the displacement of the sliding block 33, a protruding step 35 is provided in the groove, so that the sliding block 33 slides between the step 35 and the locking part.

[0025] like Figure 3 and Figure 4 As shown, in order to drive the sliding block 33, a recessed cavity 331 is provided inside the sliding block 33. A traction rope 36 is connected to the bottom of the cavity 331, and the other end of the traction rope 36 is connected to the handle rod 38. By rotating the handle rod 38, the sliding block 33 is driven to slide left and right along the groove.

[0026] To enable the sliding block 33 to have an automatic reset function, a countersunk hole 332 is provided on the sliding block 33. The countersunk hole 332 is coaxially arranged with the cavity 331, and the diameter of the countersunk hole 332 is larger than the diameter of the cavity 331. A spring 34 is installed in the countersunk hole 332. The traction rope 36 is passed through the spring 34 and connected to the bottom of the cavity 331. Then, one end of the spring 34 is pressed against the step 35, so that the spring 34 is positioned between the sliding block 33 and the step 35. The force of the step 35 and the spring 34 is used to compress the displacement change of the sliding block 33.

[0027] like Figure 3 and Figure 4 As shown, because the limiting block 5 and the locking part are connected to the plug 2 in an overlapping manner, the locking part is fixedly connected to the plug 2. The locking part is connected to the plug 2 after passing through the limiting block 5 via a shaft pin, so the locking part can rotate around the limiting block 5 via the shaft pin. In order to limit the position of the locking part, a locking head 32 is provided at the front end of the sliding block 33. A portion of the locking head 32 protrudes beyond the horizontal plane where the handle and the locking part are located, and the protruding portion is used to contact the limiting block 5.

[0028] like Figure 4 and Figure 5 As shown, the locking head 32 is finger-shaped and has an arc surface, which is a sliding surface 321. Its purpose is to be a contact surface that slides between the first limiting groove 51 and the second limiting groove 52 of the limiting block. The other contact surface of the locking head 32 is a horizontal stop surface 322, which is to be completely fitted with the contact surface of the first limiting groove 51 and the second limiting groove 52 to achieve limiting locking.

[0029] like Figure 6As shown, this state is the fully locked connection of the fluid connector plug 2 and socket 1, wherein the locking head 32 is fully inserted into the first limiting groove 51 in the limiting block 5.

[0030] like Figure 7 As shown, to begin unlocking, first rotate the pull rod 38, which, via the traction rope 36, drives the sliding block 33 to disengage the locking head 32 from the first limiting groove 51. Then rotate the push rod 37 to align the locking head with the second limiting groove 52 (as shown). Figure 8 As shown), when the lever 38 is released, the sliding block 33 will automatically reset under the force of the spring 34, causing the locking head to insert into the second limit groove 52, as shown. Figure 9 As shown.

[0031] When locking plug 2 and socket 1, follow the instructions. Figures 9-6 In the reverse operation, the pull rod 38 does not need to be rotated. The push rod 37 is pushed directly, which drives the support arm and locking part to rotate along the shaft pin. This causes the locking head 32, which is inserted into the second limiting groove 52, to be subjected to force. Under the force of the handle, the sliding surface 321 will climb along one wall of the second limiting groove 52 until it is embedded in the first limiting groove 51, thus completing the locking and limiting, and at the same time completing the meshing of the gear 31 and the rack 4.

[0032] 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 mechanism with ratchet locking for locking the socket and plug of a fluid connector, characterized in that: The end of the handle is connected to the plug via a pivot pin, and the end includes a locking part. The locking part is provided with a gear for engaging with a rack provided on the socket. Guide the handle upwards from the bottom to the gear connecting the rack of the locking part.

2. A handle assembly with a ratchet lock according to claim 1, characterized in that: The plug is provided with a limiting component, and the handle is provided with a sliding component, which is engaged with the limiting component.

3. A handle assembly with a ratchet lock according to claim 2, characterized in that: The limiting member shown includes two limiting grooves, and the sliding member can slide from one limiting groove into the other limiting groove under the action of external force.

4. A handle mechanism with ratchet locking according to claim 1 or 2, characterized in that: The handle includes a push rod and support arms symmetrically connected to both ends of the push rod. A groove is provided along the longitudinal direction of the support arm, and a sliding block is provided in the cavity. A protruding locking head is provided at the end of the sliding block, and the locking head engages with a limiting member. A rotatable pull rod is coaxially mounted on the push rod, and the pull rod is connected to the sliding block by a traction rope.

5. A handle assembly with a ratchet lock according to claim 4, characterized in that: The groove is provided with a step to limit the displacement of the sliding block, and a spring is provided between the sliding block and the step.

6. A handle mechanism with ratchet locking according to claim 4 or 5, characterized in that: The sliding block has an inner cavity, and one end of the traction rope passes through a spring and is connected to the bottom of the cavity.

7. A handle mechanism with ratchet locking according to claim 6, characterized in that: The sliding block has a countersunk hole at its end, which is coaxial with the cavity, and the spring is disposed between the countersunk hole and the step.

8. A handle assembly with a ratchet lock according to claim 4, wherein: The locking head protrudes along the vertical surface of the sliding block to the outside of the locking part and engages with the limiting member.

9. A handle assembly with a ratchet lock according to claim 8, characterized in that: The locking head contacts the limiting block, and one of the contact surfaces of the locking head is an arc surface.

10. A handle assembly with a ratchet lock according to claim 8, characterized in that: A limiting member is disposed between the locking part and the plug. The limiting member is fixedly connected to the plug, and the locking part is connected to the plug through the limiting member by a pin.

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