CN-121993466-A - Accessory locking assembly

Abstract

The embodiment of the application provides an accessory locking assembly, which comprises a locking piece, a main body and a reset structure, wherein the locking piece comprises an operation part, a thread section, a matching section and a limiting structure which are sequentially arranged in a first direction, the outer diameter of the thread section is larger than that of the matching section, the main body is provided with a threaded hole and a stop structure, the threaded hole is used for being in threaded fit with the thread section, the length of the threaded hole is smaller than that of the matching section, the operation part and the limiting structure are respectively positioned at two sides of the threaded hole, the stop structure is positioned between the limiting structure and the threaded hole, the stop structure is used for being in stop fit with the limiting structure, the reset structure is arranged between the limiting structure and the main body, and the reset structure is used for providing reset force for enabling the limiting structure to be far away from the threaded hole under the condition that the thread section is separated from the threaded hole at least. The accessory locking assembly provided by the embodiment of the application has an anti-falling function, reduces the probability of being blocked when the accessory is unlocked to the limit position, and is easy to distinguish an unlocking state when the accessory is unlocked to the limit position.

Inventors

• JI CHANGSHENG
• LIANG YUNFANG

Assignees

• 南京迈瑞生物医疗电子有限公司

Dates

Publication Date

20260508

Application Date

20241105

Claims (20)

1. 1. An accessory lock assembly, comprising: the locking piece comprises an operation part, a thread section, a matching section and a limiting structure which are sequentially arranged in a first direction, wherein the outer diameter of the thread section is larger than that of the matching section, The main body is provided with a threaded hole and a stop structure, the threaded hole is used for being in threaded fit with the threaded section, the length of the threaded hole is smaller than that of the fit section, the operation part and the limit structure are respectively positioned at two sides of the threaded hole, the stop structure is positioned between the limit structure and the threaded hole, and the stop structure is used for being in stop fit with the limit structure so as to limit the movement stroke of the locking piece; And the reset structure is arranged between the limit structure and the main body, and at least in a state that the thread section and the threaded hole are separated, the reset structure provides reset force for enabling the limit structure to be far away from the threaded hole.
2. 2. The accessory lock assembly as claimed in claim 1, wherein the return structure constantly provides a return force to the limit structure away from the threaded bore over a range of movement of the lock member.
3. 3. The accessory lock assembly of claim 1, wherein the return structure comprises an elastic member, wherein two ends of the elastic member are respectively engaged with the limit structure and the stop structure, and wherein the return structure is in an energy storage state at least when the threaded section is in a separated state from the threaded hole.
4. 4. An accessory lock assembly as claimed in claim 3 wherein the resilient member is in an energy storage condition throughout the range of motion of the locking member.
5. 5. The accessory lock assembly of claim 1, wherein the reset structure comprises a first magnetic member and a second magnetic member, the first magnetic member disposed in the limit structure; The second magnetic piece is arranged on the stop structure, the first magnetic piece and the second magnetic piece repel each other, or the second magnetic piece is arranged on the main body and is positioned on one side of the limit structure far away from the matching section, and the first magnetic piece and the second magnetic piece attract each other.
6. 6. The accessory lock assembly according to claim 1, wherein an end surface of the threaded section facing the side of the engagement section has a first chamfer surface, an end surface of the threaded hole facing the one end of the operation section has a second chamfer surface, and when the engagement section is engaged with the threaded hole, the first chamfer surface abuts against the second chamfer surface under the action of the restoring force.
7. 7. The accessory lock assembly as claimed in claim 1, wherein the limit structure, the mating section, the threaded section are of unitary construction, or The limiting structure and the matching section are of split type structures, and the limiting structure is connected with the matching section.
8. 8. The accessory lock assembly of claim 1, wherein the locking member further comprises a connecting section connected to an end of the threaded section remote from the limit structure, the connecting section being of a split structure with the operating portion, the connecting section being capable of passing through the threaded hole from a side of the threaded hole adjacent to the limit structure and being connected to the operating portion.
9. 9. The accessory lock assembly of claim 1, wherein the stop structure comprises an insert having one end passing through a sidewall of the body and interposed between the limit structure and the threaded bore in a second direction, the second direction intersecting the first direction.
10. 10. The accessory lock assembly as claimed in claim 1, wherein the outer peripheral surface of the mating section is provided with a clamping groove, and the limit structure includes a clamp spring, and the clamp spring is clamped into the clamping groove.
11. 11. An accessory lock assembly according to any one of claims 1 to 10, wherein the body is provided with a socket for insertion of an accessory, and wherein an end of the locking member remote from the operating portion abuts against and locks the accessory inserted into the socket when the threaded section is screw-threadedly locked with the threaded hole.
12. 12. The accessory lock assembly as claimed in claim 11, wherein the receptacle extends in a direction perpendicular to the first direction.
13. 13. The accessory lock assembly as claimed in any one of claims 1 to 10, wherein the main body includes a first portion and a second portion, the first portion including a shaft section, the second portion being at least partially rotatable around an outer periphery of the shaft section, the threaded bore being provided in the shaft section, the locking member further having an abutment end face located between the threaded section and the operating portion, the abutment end face abutting against the second portion and locking the second portion when the threaded section is cooperatively locked with the threaded bore.
14. 14. An accessory lock assembly, comprising: The locking piece comprises an operation part, a matching section, a limiting end face and a thread section which are sequentially connected along a first direction, wherein the diameter of the thread section is larger than that of the matching section; The main body is provided with a threaded hole, an accommodating space and an opening, the accommodating space is communicated with the threaded hole and the opening, the threaded hole is used for being in threaded fit with the threaded section, the fit section penetrates through the opening, the operation part and the limiting end face are respectively positioned on two sides of the opening, and the length of the accommodating space in the first direction is not smaller than the length of the threaded section; When the thread section is completely withdrawn from the threaded hole into the accommodating space, the limiting end face is used for being matched with the main body stop to prevent the locking piece from being withdrawn from the opening.
15. 15. The accessory lock assembly as claimed in claim 14, wherein a diameter of a maximum rotational trajectory of the limit end face is greater than a diameter of an inscribed circle of the opening.
16. 16. The accessory lock assembly as claimed in claim 14, wherein the main body includes a first portion and a second portion, the first portion including a shaft section, the second portion being at least partially rotatable around an outer periphery of the shaft section, the threaded bore being provided in the shaft section, the locking member further having an abutment end face located between the mating section and the operating portion, the abutment end face abutting against the second portion and locking the second portion when the threaded section is mated and locked with the threaded bore.
17. 17. The accessory lock assembly as claimed in claim 16, wherein the second portion is movable in an axial direction of the shaft section, the abutment end surface being adapted to urge the second portion in the axial direction of the shaft section during threading of the threaded section into the threaded bore.
18. 18. The accessory lock assembly as claimed in claim 17, wherein the second portion includes a barrel portion and an end cap portion, the end cap portion being disposed at an axial end of the barrel portion, the barrel portion surrounding an outer periphery of the shaft section, the end cap portion being located on a side of the shaft section adjacent the operating portion, the opening being formed in the end cap portion, the abutment end face being for abutment engagement with the end cap portion.
19. 19. The accessory lock assembly as claimed in claim 18, wherein the shaft section is further provided with a receiving hole at an end of the threaded hole adjacent to the operating portion, an inner diameter of the receiving hole is larger than an inner diameter of the threaded hole, a length of the receiving hole is smaller than a length of the threaded section, and a sum of a movement stroke of the second portion in the axial direction and the length of the receiving hole is not smaller than the length of the threaded section, the end cap portion and the receiving Kong Gongtong define the receiving space.
20. 20. The accessory lock assembly as claimed in claim 17, wherein the first portion further includes a first toothed disc portion and the second portion includes a second toothed disc portion, the first and second toothed disc portions being engaged in abutment in the first direction when the threaded section is matingly locked with the threaded bore.

Description

Accessory locking assembly Technical Field The application relates to the technical field of connecting structures, in particular to an accessory locking assembly. Background In the related art, referring to fig. 1, in order to prevent the locking member from being separated from the main body during unlocking, an anti-disengagement structure 14 'is disposed at the end of the threaded section 13', and when the anti-disengagement structure 14 'abuts against the accessory 500', locking of the accessory 500 'and the main body 200' is achieved, otherwise, after the anti-disengagement structure 14 'is separated from the accessory 500', unlocking is achieved. When the thread segments 13 'are withdrawn outwardly to a certain length, the anti-falling structure 14' contacts the stopper structure 200f ', thereby preventing further falling-out of the thread segments 13'. However, in the anti-slip position shown in fig. 1, continued application of a unscrewing force to the handle 11' will cause the thread segments 13' to become stuck (twisted) with the body 200 '. In some constructions, it is sometimes difficult to determine the locked state of the handle 11', and only a feedback feeling of the twist is likely to cause a situation where the actual complete unlocking is erroneously detected as the locked state (the locked state is when the twist is not activated), and in addition, a situation where the unlocking is stopped to the limit position (the position shown in fig. 1) and the use is not possible is likely to occur. The information in the background section is only for the purpose of illustrating the general background of the invention and is not to be construed as an admission or any form of suggestion that such information forms the prior art that is well known to those of ordinary skill in the art. Disclosure of Invention Accordingly, it is desirable to provide an accessory locking assembly that is anti-disengaging, reduces the chance of getting stuck when unlocked to a limit, and facilitates distinguishing the unlocked state when unlocked to the limit. An embodiment of the present application provides an accessory lock assembly, including: the locking piece comprises an operation part, a thread section, a matching section and a limiting structure which are sequentially arranged in a first direction, wherein the outer diameter of the thread section is larger than that of the matching section, The main body is provided with a threaded hole and a stop structure, the threaded hole is used for being in threaded fit with the threaded section, the length of the threaded hole is smaller than that of the fit section, the operation part and the limit structure are respectively positioned at two sides of the threaded hole, the stop structure is positioned between the limit structure and the threaded hole, and the stop structure is used for being in stop fit with the limit structure so as to limit the movement stroke of the locking piece; And the reset structure is arranged between the limit structure and the main body, and at least in a state that the thread section and the threaded hole are separated, the reset structure provides reset force for enabling the limit structure to be far away from the threaded hole. In some embodiments, the return structure provides a constant return force to the spacing structure away from the threaded bore over a range of motion of the locking member. In some embodiments, the reset structure comprises an elastic piece, two ends of the elastic piece are respectively matched with the limiting structure and the stop structure, and the reset structure is in an energy storage state at least when the threaded section and the threaded hole are in a separated state. In some embodiments, the elastic member is in an energy storage state within a range of motion of the locking member. In some embodiments, the reset structure comprises a first magnetic member and a second magnetic member, the first magnetic member being disposed on the limit structure; The second magnetic piece is arranged on the stop structure, the first magnetic piece and the second magnetic piece repel each other, or the second magnetic piece is arranged on the main body and is positioned on one side of the limit structure far away from the matching section, and the first magnetic piece and the second magnetic piece attract each other. In some embodiments, the end surface of the threaded section facing to one side of the matching section is provided with a first chamfer surface, the end surface of the threaded hole facing to one end of the operation part is provided with a second chamfer surface, and when the matching section is matched with the threaded hole, the first chamfer surface is abutted with the second chamfer surface under the action of the reset force. In some embodiments, the limit structure, the matching section and the thread section are of an integrated structure, or the limit structure and the matching section are