Connector plug with quick locking structure and connector

Abstract

The invention discloses a connector plug with a quick locking structure and a connector, the connector plug comprises a plug shell and a connecting cap, the connecting cap forms a cavity along the axial direction, the connecting cap sleeves the plugging end of the plug shell, the connecting cap can rotate relative to the plug shell, an elastic member is arranged in a gap between the plug shell and the connecting cap, and the elastic member is connected with the cavity. And two ends of the elastic piece are respectively contacted with the plug shell and the connecting cap. According to the device, through structural improvement, the problem that an existing threaded connection locking technology is inconvenient to operate can be effectively solved, insertion connection can be facilitated, the time consumed by insertion connection and separation is effectively shortened, and rapid locking and unlocking separation at the connecting position are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of connectors, and in particular relates to a connector plug and a connector with a quick locking structure. Background Art

[0002] In the relevant prior art, industrial robotic arms are mainly used in automated assembly product lines such as electronics, logistics, and automobiles to complete multi-joint manipulators and multi-degree-of-freedom mechanical devices. The motion trajectory and usage scenarios of existing robotic arms are relatively complex. With the continuous development of the industry, higher requirements are placed on space and operation. Because threaded series connectors generally use threaded connections, when the connectors are plugged in, it is necessary to manually rotate the connecting nut to achieve reliable connection or separation; however, threaded connection through this operation method requires a larger operating space. At the same time, based on this, the following technical defects currently exist in the relevant technology: the existing threaded connection locking technology is inconvenient to operate, requires a large operating space, and the connection through the threaded structure will cause the plugging and separation process to be time-consuming. At the same time, the threaded connection method is not convenient enough. Summary of the invention

[0003] The purpose of the present invention is to solve at least one of the problems existing in the above-mentioned prior art and to provide a connector plug and a connector with a quick locking structure. Through structural improvement, the device can effectively solve the problem of inconvenient operation of the existing threaded connection locking technology, facilitate the head seat connection and effectively reduce the time spent on plugging and separation, thereby realizing the quick locking and unlocking separation of the head seat connection.

[0004] One of the objects of the present invention is to provide a connector plug with a quick locking structure, comprising a plug housing and a connecting cap, wherein the connecting cap is provided with a cavity along the axial direction, the connecting cap is sleeved on the plug-in end of the plug housing, and the connecting cap can rotate relative to the plug housing, an elastic member is arranged in the gap between the plug housing and the connecting cap, and the two ends of the elastic member are respectively in contact with the plug housing and the connecting cap.

[0005] As a preferred solution, a key is provided on the inner wall of the cavity of the connecting cap, and a groove-shaped space for accommodating the key is provided on the outer wall of the plug end of the plug housing, and the groove-shaped space is provided along the rotation direction of the connecting cap relative to the plug housing.

[0006] As a preferred solution, the groove-shaped space is provided with an arc-shaped protrusion along its circumferential direction on one side of the plug end close to the plug housing, and the arc-shaped protrusion cooperates with the key to form a stop for the connecting cap along the first axial direction.

[0007] As a preferred solution, a card block is provided on the inner wall of the cavity of the hood near the front end, and the card block is used for adapting and connecting with the outer wall card slot of the adapter socket.

[0008] As a preferred solution, the elastic member is arranged along the rotation direction of the connecting cap relative to the plug housing, and one end of the elastic member is in contact with a key on the connecting cap.

[0009] As a preferred solution, an annular groove is provided along the circumference of the inner wall of the cavity of the connecting hood, a retaining ring is installed in the annular groove, the retaining ring is located between the block and the key, and the retaining ring cooperates with the arc-shaped protrusion to form a stop for the connecting hood along the second axial direction.

[0010] As a preferred solution, a gasket is further provided between the retaining ring and the arc-shaped protrusion.

[0011] As a preferred solution, the plug housing plugging end has at least two grooved spaces distributed circumferentially, the connecting cap is provided with a key for matching with the grooved space, one end of the elastic member contacts the key, and the other end contacts the tail end of the adjacent grooved space.

[0012] A second object of the present invention is to provide a connector, comprising a connector socket and a connector plug as described in any one of the above items.

[0013] As a preferred solution, an outer wall card slot is provided on the outer wall of the plugging end of the connector socket, and the outer wall card slot is arranged along the plugging direction.

[0014] As a preferred solution, the outer wall slot includes a slide slot and a lock slot arranged at the rear end of the slide slot.

[0015] As a preferred solution, at least one side of the outer wall slot is provided with an inclined protrusion, and the inclined protrusion has an insertion inclined surface located in the sliding slot and a stop surface located in the locking slot.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: First, the connector plug of the present invention improves the structure of the mounting plug and the hood structure of the plug housing, and an elastic member is provided in the gap between the mounting plug and the hood. When the head seat is locked, the hood can compress the elastic member and accumulate reset force. After being inserted into place, the hood is pushed by the elastic member to achieve the locking connection of the head seat. When the head seat is unlocked, the elastic member is compressed by rotating the hood and the connector plug is pulled out axially, and the elastic member will further push the hood to achieve rotational reset.

[0017] Secondly, the present invention provides a card block on the inner wall of the plug-in end of the connecting hood, and the card block and the outer wall card groove form a slot block structure and the automatic rebound mechanism composed of the inner key of the connecting hood and the elastic member cooperate with each other. When the head seat is plugged in, the automatic rebound structure is used to realize the rotation of the connecting hood and the automatic locking of the outer wall card groove of the connecting hood and the connector socket. When the head seat is unlocked, the connector socket and the connecting hood can be quickly separated by rotating the connecting hood, so as to pull out the plug and quickly complete the unlocking process of the head seat.

[0018] Third, this solution takes into account the assembly effect of the hood, and realizes the stop limit on the first axial direction of the hood through the cooperation of the key and the arc-shaped protrusion, and realizes the stop limit on the second axial direction of the hood through the cooperation of the arc-shaped protrusion and the inner retaining ring of the hood. Such a design, by cleverly combining the automatic rebound structure and the groove-shaped space in the hood, realizes the axial limitation after the hood is assembled, and after the hood is assembled, the key is located inside the groove-shaped space under the elastic force of the elastic part, thereby preventing the hood from detaching from the plug housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 Schematic diagram of the connector plug and the connector socket before being plugged in the present invention Figure 1 ; Figure 2 Schematic diagram of the connector plug and the connector socket before being plugged in the present invention Figure 2 ; Figure 3 It is a schematic diagram of the structure of the connector socket in the present invention; Figure 4 It is a schematic diagram of the exploded view of the hood of the connector plug in the present invention; Figure 5 It is a schematic diagram of the cooperation between the key and the groove-shaped space in the present invention; Figure 6 It is an exploded schematic diagram of the connector plug in the present invention; Figure 7 The hooded three-dimensional Figure 1 ; Figure 8 The hooded three-dimensional Figure 2 ; Fig. 9 A longitudinal cross-sectional view of the hood edge of the present invention; Fig.10 It is a schematic diagram of the installation of the elastic member in the present invention; Fig.11 It is a cross-sectional view along the radial direction of the hood of the present invention; Fig.12 This is a diagram of the internal structure of the hood in the present invention; Markings in the figure: 1. Plug housing; 11. plug-in end, 12. arc-shaped protrusion, 13. groove-shaped space, 131. opening, 132. stopper plate, 133. groove-shaped space I, 134. groove-shaped space II, 14. accommodating cavity, 15. inner cavity, 16. circumferential step; 2. Hooded; 21. key, 211. key I, 212. key II, 213. key III, 22. block, 23. annular groove, 24. anti-skid convex pattern, 25. plug-in direction indicating arrow, 26. rotation direction indicating arrow, 27. cavity, 28. anti-skid stripes; 3. elastic member, 31. spring I, 32. spring II; 4. Retaining ring; 5. Flat pad; 6. Plug tail seat; 7. Plug inner core; 8. Insulator; 100. Connector plug; 200, connector socket; 201, outer wall slot, 202, slide slot, 203, lock slot, 204, raised inclined surface, 205, plugging inclined surface, 206, stop surface, 207, socket interface. DETAILED DESCRIPTION

[0021] The present invention is described in detail below by means of exemplary embodiments. However, it should be understood that, without further description, elements, structures and features in one embodiment may also be beneficially combined in other embodiments.

[0022] It should be noted that, unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the invention belongs. The words "one", "an" or "the" and the like used in the patent application specification and claims of the present invention do not express quantitative limitations, but indicate the existence of at least one. Words such as "include" or "comprise" indicate that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, but do not exclude other elements or objects with the same function.

[0023] As shown in the figure, this embodiment provides a connector plug, including a plug housing 1 and a hood 2 arranged at the plug end 11 of the plug housing 1, the hood 2 can rotate relative to the plug housing 1, and a receiving cavity for installing an elastic member 3 is arranged in the gap between the hood 2 and the plug housing 1, one end of the elastic member 3 contacts the plug housing 1, and the other end contacts the hood 2, the hood 2 can squeeze the elastic member 3, so that the hood 2 rotates relative to the plug housing 1 along a first rotation direction, and at the same time, the elastic member 3 generates a rebound force for realizing the rotation and reset of the hood 2 along a second rotation direction (opposite to the first rotation direction) after being squeezed, so that the hood 2 can be quickly reset under the action of the rebound force of the elastic member 3. This solution realizes the rapid plug-in locking or rapid unlocking of the connector plug 100 and the adapter connector socket 200 through the cooperation of the plug housing 1, the hood 2 and the elastic member 3, improves the convenience of plug-in locking and unlocking, saves operation time and reduces the difficulty of locking and unlocking separation during the plug-in process.

[0024] In this embodiment, an inner cavity 15 for accommodating the plug inner core 7 and the insulator 8 is formed inside the plug housing 1, and a hole cavity for accommodating the pin of the plug inner core 7 is formed in the insulator 8 along the axial direction. A plug tail seat 6 is provided at the tail end of the plug housing 1, and the plug tail seat 6 can be connected to the tail end of the socket housing 1 by a connection method such as a threaded method, a snap-on method or an adhesive method; a groove-shaped space 13 is arranged around the outer wall of the plug housing 1 close to the plug-in end 11, and an opening 131 for the key 21 to be assembled and entered is formed at the head end of the groove-shaped space 13, and the opening 131 corresponds to one end of the elastic member 3, and a stop plate 132 is provided at the tail end of the groove-shaped space 13 (with the opening of the groove-shaped space 13 as the front end and the stop plate 132 of the groove-shaped space 13 as the tail end), the tail end of the elastic member 3 can contact one side of the key 21, and the head end of the elastic member 3 can abut against the tail end of the adjacent groove-shaped space 13, the elastic member 3 can adopt an ordinary compression spring, and in other embodiments of the present scheme, other types of elastic members can also be used, and the elastic member 3 can provide a circumferential force for the rotation of the connecting cap 2.

[0025] In this embodiment, the function of the groove-shaped space 13 is to accommodate the key 21 in the hood 2. The key 21 can enter the groove-shaped space 13 through the opening 131 of the groove-shaped space 13 and can move in the groove-shaped space 13 along the rotation direction of the hood 2, and one end of the key 21 contacts one end of the elastic member 3. Preferably, in the extended state, the end of the elastic member 3 can enter the groove-shaped space 13 through the opening 131 and abut against one end of the key 21. The groove-shaped space 13 is surrounded by the arc-shaped protrusions 12 located on the opposite sides, the circumferential steps 16 of the outer wall of the plug housing 1, and the stopper plate 132 located at the rear. The width of the groove-shaped space 13 gradually narrows from the opening 131 to the rear end. The purpose of such design is to ensure that the opening 131 has a large opening angle to facilitate the assembly of the key 21, while avoiding the formation of obstacles to the expansion and contraction of the elastic member 3, which is conducive to the end of the elastic member 3 smoothly entering the groove-shaped space and contacting and fitting with one end of the key 21.

[0026] In the present invention, the hood 2 adopts the following structure: the hood 2 is an annular sleeve, and the hood 2 has a cavity 27, which is arranged along its axial direction. The function of the cavity 27 is to realize the plugging and locking of the connector plug 100 and the adapter connector socket 200 therein, and the inner wall of the cavity near the rear end of the hood 2 is surrounded by a key 21 along the circumferential direction. The function of the key 21 is that the key 21 contacts one end of the elastic member 3, and the hood 2 is matched with the elastic member 3 through the key 21. Blocks 22 are evenly distributed on the inner wall of the cavity near the front end of the hood 2.

[0027] In the present scheme, in order to ensure the axial assembly effect between the connecting hood 2 and the plug housing 1, an annular groove 23 is circumferentially arranged on the inner wall of the cavity of the connecting hood 2, and the annular groove 23 is used to install a retaining ring 4, and the retaining ring 4 is fixedly mounted inside the annular groove 23 by its own elastic force. Preferably, the retaining ring 4 can adopt the following structure: the retaining ring 4 is a ring with a disconnection, and the two ends of the retaining ring 4 are pressed inwardly so that the retaining ring 4 can be easily inserted into the annular groove 23, and then reset and fixed in the annular groove 23 by its own elastic force. In other embodiments, the retaining ring 4 can also be mounted in the annular groove 23 by other types of assembly methods. The function of the retaining ring 4 is to effectively ensure the axial position of the connecting hood 2 after installation. When the connecting hood 2 is installed, its key 21 is inserted into the interior of the grooved space 13 through the opening 131 of the grooved space 13. At the same time, due to the elastic force of the elastic member 3, the key 21 will be prevented from escaping outward from the opening 131 of the grooved space 13. In addition, since the key 21 is assembled in the grooved space 13, the key 21 will form an axial fit with one side of the arc-shaped protrusion 12, thereby forming a limit stop for the connecting hood 2 to move in a first axial direction (towards the plugging direction) relative to the plug housing 1. The retaining ring 4 forms a fit with the other side of the arc-shaped protrusion 12, thereby limiting the connecting hood 2 to move in a second axial direction (towards the tail end of the plug housing 1) relative to the plug housing 1. Preferably, a gasket 5 is also provided between the retaining ring 4 and the arc-shaped protrusion 12. The gasket 5 is used to compensate for the assembly clearance margin between the retaining ring 4 and the arc-shaped protrusion 12, and at the same time reduce the wear of the contact surfaces between the retaining ring 4 and the arc-shaped protrusion 12.

[0028] In a typical embodiment of the present invention, the plug-in end of the connector plug 100 is provided with more than two groove-shaped spaces 13. The structure is introduced by taking the two groove-shaped spaces 13 as an example. The two groove-shaped spaces 13 are groove-shaped space I 133 and groove-shaped space II 134. The two groove-shaped spaces 13 are evenly distributed on the plug-in end 11 of the plug housing 1, and the openings 131 of the two groove-shaped spaces 13 are arranged along the same rotation direction of the hood 2. The rear end of the inner wall of the cavity 27 of the hood 2 is provided with a key 2 1. In order to cooperate with the groove-shaped space Ⅰ133 and the groove-shaped space Ⅱ134, the key 21 includes two groups of key blocks, one of which is a key Ⅰ211 arranged on the circumferential direction of the inner wall of the cavity 27 as shown in the figure, one end of the key Ⅰ211 can contact the tail end of the spring Ⅰ31, and the head end of the spring Ⅰ31 contacts the stop plate 132 at the tail end of the adjacent groove-shaped space 13, and the other group of key blocks includes a key Ⅱ212 and a key Ⅲ213 as shown in the figure, and the combined function of the key Ⅱ212 and the key Ⅲ213 here is the same as that of the key Ⅰ211. The difference is that a gap is formed between key II 212 and key III 213. The purpose of setting the gap here is to facilitate the demoulding of the hood 2 due to the raised inner wall design structure, wherein key I 211 is clamped into the opening 131 of the grooved space I 133 and can be movably arranged in the grooved space I 133, key II 212 and key III 213 are clamped into the opening 131 of the grooved space II 134 and can be movably arranged in the grooved space II 134, after assembly, key II 212 is located in the grooved space 13 and can contact the stop plate 132, key III 213 contacts the tail end of the spring II 32, and the head end of the spring II 32 contacts with the stop plate 132 (the tail end of the grooved space 13) of the adjacent grooved space 13.

[0029] In the present invention, vertical anti-slip stripes 28 are arranged on the outer cylindrical surface of the hood 2 in the axial direction, in order to increase the friction with the outer surface of the hood 2 when the operator twists the hood 2. At the same time, a plug-in direction indicating arrow 25 and a twisting direction indicating arrow 26 are arranged on the outer cylindrical surface of the hood 2.

[0030] As shown in the figure, in this scheme, an installation gap for the key 21 of the hood 2 is formed between the two groove-shaped spaces 13. When the hood 2 is assembled with the plug housing 1, the key 21 of the hood 2 will be inserted axially from the installation gap, and then the hood 2 is rotated so that the key 21 further enters the groove-shaped space 13 from the opening 131, and the elastic member 3 is installed so that one end of the elastic member 3 contacts the key 21, and the other end contacts the tail end of the adjacent groove-shaped space 13. At this time, the key 21, the stop plate 132 of the groove-shaped space 13 and the circumferential step 16 enclose the installation gap to form a receiving cavity 14 for installing the elastic member 3, and the elastic member 3 can shrink or stretch in the receiving cavity 14 with the squeezing action of the key 21.

[0031] The present solution also provides a connector, including the above-mentioned connector plug 100 and a connector socket 200 adapted to the connector plug 100, wherein the plug-in end of the connector socket 200 is provided with a socket interface 207, the socket interface 207 is a truncated cone-shaped sleeve, and an outer wall card groove 201 is provided on the outer cylindrical surface of the socket interface 207 along the plug-in direction, and the outer wall card groove 201 includes a slide groove 202 and a lock groove 203 provided at the tail of the slide groove 202, and between the slide groove 202 and the lock groove 203 A bevel protrusion 204 is provided on one side, and the bevel protrusion 204 has an insertion bevel 205 located in the slide groove 202 and a stop surface 206 located in the lock groove 203. The insertion bevel 205 forms a certain angle with the insertion direction. The insertion bevel 205 is mainly used to guide the block 22 when the head seat is inserted. The stop surface 206 is mainly used to stop the block 22 when the head seat is locked. Preferably, the stop surface 206 faces the lock groove 203 and is arranged along the rotation direction of the hood 22. In order to achieve the coordination between the outer wall slot 201 and the block 22 in the inner cavity of the hood 2, when the head seat is plugged in, after the block 22 contacts the plug-in inclined surface 205, the plug-in inclined surface 205 will guide and push the block 22 to one side along the torsion direction, thereby driving the rotation of the hood 2. At this time, the key 21 at the tail end of the hood 2 also gradually squeezes the elastic member 3 synchronously. When the block 22 reaches the most convex position of the inclined protrusion 204, the elastic member 3 accumulates a certain reset force. As the block 22 passes over the inclined protrusion 204, the elastic member 3 uses the accumulated reset force to push the hood 2 to rotate in the locking direction, so that the block 22 smoothly enters and is locked in the locking slot 203. At the same time, the block 22 and the stop surface 206 form a stop effect. When the head seat is unlocked, the operator twists the hood 2 in the unlocking direction, and the block 22 escapes from the locking groove 203. The key 21 squeezes the elastic member 3. When the block 22 passes over the inclined protrusion 204, the connector plug 100 can be pulled out along the axial direction in the separation direction.

[0032] In the present scheme, through the concave-convex matching structure formed by the inclined protrusion 204 of the connector socket 200, the block 22 on the connector plug 100, and the automatic rebound structure formed by the key 21 of the hood 2 and the elastic member 3, the hood 2 is rotated and automatically locked through the above-mentioned automatic rebound structure. The specific locking and unlocking process is as follows: when the head seat is inserted, the tail of the connector plug 100 is pushed in the axial direction, and the block 22 of the hood 2 will follow the slide groove 202 into the outer wall slot 201. During the sliding process, the elastic member 3 is compressed and the elastic force of the elastic member 3 increases. After passing the inclined protrusion 204, the block 22 will automatically slide into the locking groove 203. At this time, the elastic member 3 automatically extends back to its position, and the locking process of the head seat is completed. When the head seat is unlocked, the hood 2 is manually rotated in the opposite direction, the block 22 is disengaged from the locking groove 203, and after passing over the inclined protrusion 204, the connector plug 100 is pulled out axially, so that the head seat is quickly separated, and the head seat unlocking process is completed.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A connector plug with a quick locking structure, characterized in that: It includes a plug housing and a connecting cap, wherein the connecting cap has a cavity formed along the axial direction, is sleeved on the plug-in end of the plug housing, and can rotate relative to the plug housing. An elastic member is arranged in the gap between the plug housing and the connecting cap, and the two ends of the elastic member are in contact with the plug housing and the connecting cap respectively.

2. A connector plug with a quick locking structure according to claim 1, characterized in that: A key is arranged on the inner wall of the cavity of the connecting cap, and a groove-shaped space for accommodating the key is arranged on the outer wall of the plug end of the plug housing, and the groove-shaped space is arranged along the rotation direction of the connecting cap relative to the plug housing.

3. The connector plug with a quick locking structure according to claim 2, characterized in that: The groove-shaped space is located on one side of the plug end close to the plug housing and is provided with an arc-shaped protrusion along its circumferential direction. The arc-shaped protrusion cooperates with the key to form a stop for the connecting cap along the first axial direction.

4. The connector plug with a quick locking structure according to claim 1, characterized in that: A card block is arranged on the inner wall of the cavity of the hood near the front end, and the card block is used for adapting and connecting with the card slot on the outer wall of the adapter socket.

5. The connector plug with a quick locking structure according to claim 1, characterized in that: The elastic member is arranged along the rotation direction of the connecting cap relative to the plug housing, and one end of the elastic member is in contact with a key on the connecting cap.

6. The connector plug with a quick locking structure according to claim 4, characterized in that: The connecting cap is provided with an annular groove along the circumference of the inner wall of the cavity, a retaining ring is installed in the annular groove, the retaining ring is located between the block and the key, and the retaining ring cooperates with the arc-shaped protrusion to form a stop for the connecting cap along the second axial direction.

7. The connector plug with a quick locking structure according to claim 6, characterized in that: A gasket is also arranged between the retaining ring and the arc-shaped protrusion.

8. A connector plug with a quick locking structure according to any one of claims 1 to 6, characterized in that: The plug housing plugging end is circumferentially provided with at least two slot-shaped spaces, the connecting cap is provided with a key for matching with the slot-shaped space, one end of the elastic member contacts the key, and the other end contacts the tail end of the adjacent slot-shaped space.

9. A connector, characterized in that: It comprises a connector socket and a connector plug as claimed in any one of claims 1 to 8.

10. A connector according to claim 9, characterized in that: An outer wall card slot is arranged on the outer wall of the plugging end of the connector socket, and the outer wall card slot is arranged along the plugging direction.

11. A connector according to claim 10, characterized in that: The outer wall slot comprises a slide slot and a lock slot arranged at the rear end of the slide slot.

12. A connector according to claim 11, characterized in that: At least one side of the outer wall slot is provided with an inclined protrusion, and the inclined protrusion has an inserting inclined surface located in the sliding slot and a stop surface located in the locking slot.

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