Anti-falling sealing dustproof cap and anti-falling sealing connecting assembly

Abstract

The utility model discloses an anti-drop sealing dust cap and an anti-drop sealing connecting assembly, the anti-drop sealing dust cap comprises a dust cap body, the dust cap body comprises a cap cover and a locking outer shell arranged on the end face of one side of the cap cover, an inserting cavity is formed at the inserting end of the locking outer shell, the inserting cavity is used for being connected with an adaptive external interface in an inserting mode, and the locking outer shell is used for locking the locking outer shell. A locking groove is formed in the side wall of the locking outer shell and used for being rotationally locked with a locking block matched with an external connector. The dustproof cap body is further provided with an inner sealing piece, the inner sealing piece is located in the locking outer shell, and the inner sealing piece is used for being inserted into an adaptive external connector. And / or a sealing surface is formed at the plugging end of the locking outer shell; the sealing surface is used for pressing an outer sealing ring arranged on the periphery of the adaptive external interface; the dustproof cap of the device is simple in structure, effective sealing and reliable connection are guaranteed, and meanwhile the dustproof cap can be rapidly, conveniently and repeatedly detached.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust caps, and in particular relates to an anti-drop sealing dust cap and an anti-drop sealing connection component. Background Art

[0002] As society progresses, the variety of electronic devices continues to increase. These devices often feature external interfaces for power supply or transmission of optical, electrical, and other data signals. To maintain a dry environment inside these devices and prevent external sediment and moisture from entering and impacting their operation, dust caps are installed on these external interfaces to provide a seal.

[0003] In the related art, in order to prevent the dust cap from falling off, the dust cap of the external interface of the existing electronic device usually adopts a threaded structure to achieve connection with the device interface by hand-tightening or twisting with a wrench, or adopts a rubber structure interference fit structure for installation. The dust caps in the prior art still have the following defects: ①, in order to ensure the sealing performance, the number of threads of the threaded connection structure dust cap is set relatively large, which is not easy to operate during actual use and installation or requires the use of tools such as wrenches. At the same time, the product needs to be removed and installed many times during the use cycle. After multiple removals and installations, the sealing performance of the thread will be reduced, posing a risk to the protection of the internal components of the electronic device. ②, in order to prevent the dust cap from falling off, a larger interference structure is usually adopted. During actual operation, the interference force is large, which can easily cause inconvenience to the operation. The dust cap with an interference fit structure also has the risk of the dust cap falling off, resulting in sealing failure. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the above-mentioned prior art and to provide an anti-slip sealing dust cap and an anti-slip sealing connection assembly. The dust cap of the device has a simple structure and can be quickly, conveniently and repeatedly removed while ensuring effective sealing and reliable connection.

[0005] To achieve the above-mentioned object, the present invention adopts the following technical solution: an anti-drop sealing dust cap, comprising a dust cap body, the dust cap body comprising a cap cover and a locking outer shell provided on one end face of the cap cover, a plug-in cavity formed on the plug-in end of the locking outer shell, the plug-in cavity being used for plugging and connecting with an adapting external interface, a locking groove being formed on the side wall of the locking outer shell, the locking groove being used for locking with a locking block at the adapting external interface;

[0006] The dust cap body is also provided with an inner seal, which is located in the locking outer shell and is used to be inserted into the adapter external interface to form a seal inside the external interface;

[0007] And\or the plug-in end of the locking outer shell is formed with a sealing surface; the sealing surface is used to compress the outer sealing ring arranged on the periphery of the adapting external interface to form a seal on the periphery of the external interface.

[0008] As a preferred solution, the inner seal is detachably connected to the dust cap body.

[0009] As a preferred embodiment, the inner seal includes a sealed inner shell and an inner sealing ring with a hollow structure, the locking outer shell and the sealed inner shell are coaxially arranged, and an annular plug-in cavity is formed between the locking outer shell and the sealed inner shell, an inner sealing ring is provided on the sealed inner shell, and a lock groove is provided on the side wall of the locking outer shell.

[0010] As a preferred solution, an annular mounting groove for mounting an inner sealing ring is formed on the outer wall surface of the sealed inner shell;

[0011] Or the plug connector of the sealed inner housing is provided with an annular mounting platform for mounting the inner sealing ring.

[0012] As a preferred solution, the inner sealing member extends outward from the locking outer shell and exposes the plug-in end of the locking outer shell.

[0013] As a preferred solution, the inner sealing ring is provided on the sealed inner housing by injection molding.

[0014] As a preferred solution, a rope hanging boss and a manual knob are provided on the end surface of the cap facing away from the plug-in end.

[0015] As a preferred solution, the locking groove is a blind groove provided on the inner wall of the locking outer shell.

[0016] As a preferred solution, the lock slot has an inner groove inclined surface for cooperating with the locking block at the adapter external interface; a notch is set on one side of the inner groove inclined surface, and a locking position for hanging and fixing with the adapter locking block is formed on the other side of the inner groove inclined surface, and the inner groove inclined surface gradually inclines from the notch side to the locking position side.

[0017] The second purpose of the present invention is to provide an anti-slip sealing connection assembly, comprising an anti-slip sealing dust cap as described in any one of the above items and an external connection interface adapted to connect with the dust cap.

[0018] As a preferred solution, a locking block is provided on the outer wall of the external interface, and an outer sealing ring is provided on the outer port of the external interface. The outer sealing ring is provided on the side of the locking block away from the plug-in interface. After the dust cap is docked with the adapter external interface, the inner sealing member is inserted into the interior of the external interface, and the inner sealing member contacts the inner wall of the external interface to achieve an inner radial seal. After the dust cap and the external interface are rotated relative to each other, the locking block is hooked and fixed with the locking groove, and the sealing surface of the plug-in end of the locking outer shell contacts the outer sealing ring to achieve an outer seal.

[0019] Or a locking block is provided on the outer side wall of the external interface, and an outer sealing ring is provided on the outer side of the external interface port. After the dust cap is docked with the matching external interface, the dust cap and the external interface rotate relative to each other, and the locking block is hung and fixed with the locking groove, and the sealing surface of the plug-in end of the locking outer shell contacts the outer sealing ring to realize outer sealing.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] Firstly, the utility model provides an anti-drop sealing dust cap, which is provided with a locking structure and a sealing member through structural optimization. The locking structure is locked by screwing a buckle, which improves the reliability of the connection, can prevent the dust cap from falling off, and prevent the problem of sealing failure. Secondly, the IP protection of the product is achieved through the sealing member. It has a simple structure, is easy to operate, and is convenient for multiple removal and installation.

[0022] Secondly, this solution adopts a double-layer shell structure, in which the outer shell is used to be locked by screwing a snap, and the inner shell is sealed with the external interface through a seal. By arranging the locking structure and sealing structure of the dust cap in different parts of the shell, the reliability of the locking function and the sealing function can be improved. At the same time, the double-layer shell is integrated together, and the dust cap can be locked and sealed in place with one action, thereby effectively improving the convenience of operation.

[0023] Third, the locking groove of this solution is formed with an inner inclined surface for hooking with the matching locking block to prevent it from falling off. When locking, the blind groove or the inner inclined surface of the slot on the outer shell can be used to make rotational contact with the locking block. During the screwing process of the dust cap, the inner inclined surface of the slot can gradually push the dust cap along the axis toward the sealing position through contact with the locking block, so as to effectively reduce the force required during installation, thereby reducing the difficulty of installing the dust cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings of the inclined surfaces in the groove described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a disassembly diagram of the dust cap in Example 1 of the present utility model;

[0026] Figure 2 This is a schematic diagram of the dust cap and the external adapter interface before connection in Example 1 of the present utility model;

[0027] Figure 3 This is a front cross-sectional view of the connection between the dust cap and the external adapter in Example 1 of the present utility model;

[0028] Figure 4 This is a schematic diagram of the dust cap and the external adapter interface after docking in Example 1 of the present utility model;

[0029] Figure 5 This is a cross-sectional view of the dust cap and the external adapter interface after docking in Example 1 of the present utility model;

[0030] Figure 6 This is a three-dimensional diagram of the dust cap in Example 1 of the present utility model;

[0031] Figure 7 This is a cross-sectional view of the dust cap in Example 1 of the present utility model;

[0032] Figure 8 This is a three-dimensional diagram of the dust cap in Example 1 of the present utility model: the locking slot is a hole-slot structure;

[0033] Figure 9 The three-dimensional dust cap in Example 2 of the present utility model Figure 1 ;

[0034] Figure 10 This is a diagram of the internal structure of the dust cap in Example 2 of the present utility model;

[0035] Figure 11 This is a structural diagram of the lock slot of the utility model;

[0036] Figure 12 This is a cross-sectional view of the dust cap in Example 2 of the present utility model;

[0037] Figure 13 This is a front view of the dust cap in Example 2 of the present utility model;

[0038] Figure 14This is a schematic diagram of the dust cap and the external adapter interface before connection in Example 2 of the present utility model;

[0039] Figure 15 This is a cross-sectional view of the dust cap and the external adapter interface after connection in Example 2 of the present utility model;

[0040] Markings in the figure: 1. Dust cap body, 11. Cap, 111. Hanging rope boss, 112. Manual knob, 113. Indicator hole, 114. Indicator arrow, 12. Locking outer shell, 13. Insertion cavity, 14. Locking slot, 141. Notch, 142. Inner slope of slot, 143. Locking position, 144. Blind slot, 145. Hole slot, 15. Inner seal, 16. Sealed inner shell, 161. Annular mounting groove, 162. Annular mounting platform, 17. Inner sealing ring, 18. Annular plug-in cavity, 19. Sealing surface, 200. External interface, 201. Locking block, 202. Outer sealing ring, 203. Socket, 204. Fastening hole, 205. Locking arm. DETAILED DESCRIPTION

[0041] The present invention is described in detail below by way 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.

[0042] It should be noted that: unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons having ordinary skills in the field to which the present utility model belongs. The words "one", "an" or "the" and the like used in the specification and claims of the present utility model patent application do not express quantitative limitations, but rather indicate the presence 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.

[0043] Example 1

[0044] As shown in the figure, this embodiment provides an anti-dropout sealed dust cap, comprising a dust cap body 1, which includes a cap 11 and a cylindrical locking outer shell 12. The locking outer shell 12 is located on the end face of the plug-in end of the cap 11. The plug-in end of the locking outer shell 12 is formed with an inserting cavity 13. A locking groove 14 is provided on the side wall of the locking outer shell 12. The locking groove 14 is used to screw and fix with a locking block 201 adapted to an external interface 200. An inner seal 15 is provided inside the locking outer shell 12. The inner seal 15 is provided with an inner sealing ring 17. The inner seal 15 is used to be inserted into the socket 203 of the external interface 200 and seal the socket 203. The inner sealing ring 17 contacts and seals the inner wall of the socket 203. The inserting cavity 13 is located between the locking outer shell 12 and the inner seal 15. The inserting cavity 13 is an annular cavity structure. In this solution, a locking groove 14 is provided on the locking outer shell 12, and locking is achieved by screwing the locking groove 14 and the locking block 201. In this solution, the IP protection of the product is achieved by providing a sealing structure of an O-ring inside the dust cap body 1. Its structure is simple and can be quickly, conveniently and repeatedly removed while ensuring effective sealing and reliable connection.

[0045] In this solution, the inner seal 15 can adopt the following structure: the first embodiment is that the inner seal 15 is a hollow cylindrical inner shell structure, the inner seal 15 includes a sealed inner shell 16 and an inner sealing ring 17, wherein one end of the sealed inner shell 16 is integrally fixed to the end face of the plug-in side of the cap 11, the plug-in end face of the sealed inner shell 16 forms an opening, the sealed inner shell 16 and the locking outer shell 12 are coaxially arranged, and an annular plug-in cavity 13 is formed between the sealed inner shell 16 and the locking outer shell 12, and the end of the sealed inner shell 16 is fixed by the lock. The sealed inner housing 16 extends outward from the inner portion of the tight outer housing 12, and the axial length of the sealed inner housing 16 is greater than the axial length of the locking outer housing 12. An inner sealing ring 17 is provided near the end of the inner sealed housing 16. The purpose of this design is to allow the inner sealing ring 17 to first extend into the socket 203 of the external interface 200 when the dust cap 100 is connected to the adapting external interface 200, thereby sealing the socket 203. The structure of the second embodiment differs from that of the first embodiment in that the plug-in end surface of the sealed inner housing 16 is a closed structure. The structure of the third embodiment is based on the first and second embodiments, but the inner seal 15 adopts a solid cylindrical structure. All other structures are the same as those of the first and second embodiments.

[0046] In this solution, the inner seal 15 and the dust cap body 1 can adopt an integrated design as shown in the figure, and can also be assembled and connected in a detachable manner. For example, a connecting head is provided at the end of the inner seal 15, and a connecting hole adapted to the connecting head is provided on the cap 11 inside the dust cap body 1. The connecting head of the inner seal 15 is inserted into the connecting hole, wherein the connecting head can be set as a square head and the connecting hole is set as a square hole, so that the anti-rotation of the two can be better achieved. The connecting head and the connecting hole can be connected by bonding or forced clamping, so as to achieve a fixed connection between the inner seal 15 and the dust cap body 1. It should be pointed out that the connecting head can also be set as a cylindrical head, and the connecting hole is set as a cylindrical hole, so that the connecting head of the inner seal 15 and the connecting hole of the cap 11, the cylindrical head and the cylindrical hole can be connected by bonding or forced clamping, or can be fixedly connected by internal and external threads.

[0047] In this solution, an annular mounting groove 161 is provided near the end of the sealed inner shell 16, and the annular mounting groove 161 is used to install the inner sealing ring 17. The inner sealing ring 17 is sleeved on the outer circumference of the sealed inner shell 16, and the inner circle of the inner sealing ring 17 contacts the inner wall of the annular mounting groove 161. The outer circle of the inner sealing ring 17 contacts the inner wall of the interface cavity of the external interface 200. The inner sealing ring 17 is deformed by squeezing the inner and outer circles with the inner and outer contact side walls respectively, thereby realizing the circumferential sealing of the outer periphery of the sealed inner shell 16. Another embodiment is that an annular mounting platform 162 is provided at the endmost position of the sealed inner shell 16. The annular mounting platform 162 is used to install the inner sealing ring 17. The inner circle of the inner sealing ring 17 can be bonded to the annular mounting platform 162. For example, the inner sealing ring 17 is molded by injection molding, and the inner circle of the inner sealing ring 17 is bonded to the annular mounting platform 162 during the molding process. The outer circle of the inner sealing ring 17 contacts the inner wall of the interface cavity of the external interface 200, and the deformation of the inner sealing ring 17 achieves close fit with the inner wall of the interface of the external interface 200, thereby achieving radial sealing; the above two implementation methods of this scheme achieve the contact between the inner seal 15 and the inner wall of the external interface 200 by inserting the inner sealing part 15 equipped with the inner sealing ring 17 into the interior of the external interface 200, so as to better achieve the sealing effect.

[0048] It should be pointed out that the inner sealing ring 17 can be injected with sealing silicone in the annular mounting groove 161 and the annular mounting platform 162 by liquid silicone injection molding, or a sealing rubber ring can be bonded to the annular mounting groove 161 and the annular mounting platform 162. The circumferential sealing surface of the sealing rubber ring or the injected sealing silicone can adopt a smooth surface structure or a corrugated structure as shown in the figure. The corrugated structure can form a multi-channel sealing effect.

[0049] In this embodiment, the locking slot 14 can be a blind slot 144 set on the inner side wall of the locking outer shell 12, or it can be set as a hole slot 145 passing through the side wall of the locking outer shell 12, and the locking slot 14 adopts the following structure: the locking slot 14 includes a slot 141 for adapting the locking block 201 to be inserted, an inner groove inclined surface 142 for cooperating with the locking block 201 at the external interface 200, and a locking position 143, wherein the slot 141 is located on one side of the locking slot 14, one side of the inner groove inclined surface 142 is connected to one side edge of the slot 141, and the other side is connected to the locking position 143, and the locking position 143 is a recessed structure formed at the connection with the inner groove inclined surface 142, wherein the curved side of the slot 141, the inner groove inclined surface 142 and the recessed structure of the locking position 143 constitute one side edge of the locking slot 14, and this side edge and the straight edges of the other three sides form the complete structure of the locking slot 14. The inclined surface 142 in the groove is set to gradually tilt from the side of the groove 141 to the side of the locking position 143. The purpose of this setting is that by rotating and tightening the locking groove 14 and the matching locking block 201, the locking block 201 will press the inclined surface 142 in the groove and gradually push the dust cap 100 to move along the axial direction. Preferably, the inclined surface 142 in the groove is a planar structure set at an angle, and the recessed structure formed at the connection between the locking position 143 and the inclined surface 142 in the groove is used as a fixed locking position for the matching locking block 201.

[0050] In this solution, the back side of the cap 11 (the side opposite to the plug-in side) is also provided with a hanging rope boss 111 and a manual knob 112 located in the center; the manual knob 112 is symmetrically arranged on both sides of the hanging rope boss 111. In order to facilitate the observation of whether the dust cap 100 is installed in place, an indicator hole 113 for observing whether the dust cap 100 is installed in place is also provided on the periphery of the hanging rope boss 111. For example, when the indicator hole 113 is in a horizontal position, it means that the dust cap 100 is rotated and locked in place. An indicator arrow 114 for indicating the locking and unlocking directions is also provided on the outer peripheral surface of the locking outer shell 12.

[0051] In this embodiment, a sealing surface 19 is provided at the plug-in end of the locking outer shell 12. The function of the sealing surface 19 is to compress an outer sealing ring 202 disposed around the outer periphery of the adapting external interface 200, thereby forming a seal around the outer periphery of the external interface 200. More preferably, a sealing step is formed on the end face of the sealing surface 19 for pressing the outer sealing ring 202, thereby achieving a better compression and sealing effect.

[0052] In this solution, by setting up an inner and outer double-layer shell structure, the inner sealing ring 17 on the sealed inner shell 16 is sealed to adapt to the external interface 200, thereby realizing internal sealing at the socket 203. When the lock groove 14 adopts a blind groove 144 structure, the sealing surface 19 is pressed tightly on the outer sealing ring 202 arranged on the periphery of the adapting external interface 200, thereby forming an external seal on the periphery of the external interface 200.

[0053] This embodiment also provides an anti-slip sealing connection assembly, including the above-mentioned anti-slip sealing dust cap 100 and an adapting external interface 200. The adapting external interface 200 is located on a connecting base body, and fastening holes 204 fixed by screws are arranged around the connecting base body. The periphery of the adapting external interface 200 is provided with locking arms 205 matching the number of lock slots 14. A locking block 201 protruding outward is provided on the outer wall of the locking arm 205, and an outer sealing ring 202 is provided on the periphery of the adapter external interface 200. When the anti-drop sealing dust cap 100 is plugged into the adapter external interface 200, the inner sealing member 15 is inserted into the internal of the external interface 200, and the inner sealing ring 17 on the inner sealing member 15 contacts the inner wall of the external interface 200 to achieve inner sealing. After the dust cap 100 and the external interface 200 rotate relative to each other, the locking block 201 is hooked with the locking groove 14, and the sealing surface 19 of the plug-in end of the locking outer shell 12 contacts the outer sealing ring 202. Achieve a tight seal at the connection; the dust cap 100 of this solution can achieve an inner and outer double-layer seal through the sealing ring of the inner and outer double-layer shell structure, further improving the IP protection effect. The outer sealing ring 202 also plays the following role. When the anti-slip sealing dust cap 100 is inserted into the external interface 200 and twisted relative to each other, the inner inclined surface 142 of the locking groove 14 cooperates with the locking block 201 to make the dust cap 100 gradually move along the axial direction toward the side close to the external interface 200, so that the sealing surface 19 of the dust cap 100 gradually presses the outer sealing ring 202, thereby achieving a better sealing effect. During the installation process of the dust cap 100, the outer sealing ring 202 is first squeezed by the dust cap 100. When the dust cap 100 is tightened to the locking position, the elastic force of the outer sealing ring 202 will react and squeeze the dust cap 100, so that the locking block 201 sinks into the locking position 143 of the dust cap, thereby achieving a firm and fixed connection between the dust cap 100 and the external interface 200.

[0054] Example 2

[0055] As shown in the figure, this embodiment provides an anti-detachment sealing dust cap, including a dust cap body 1, the dust cap body 1 includes a cap cover 11 and a cylindrical locking outer shell 12, wherein the locking outer shell 12 is located on the end face of the plug-in end of the cap cover 11, and the plug-in end of the locking outer shell 12 is formed with a hollow cylindrical plug-in cavity 13, and a locking groove 14 is provided on the side wall of the locking outer shell 12, and the locking groove 14 is used to be screwed and fixed with a locking block 201 that is adapted to the external interface 200. This solution realizes locking by providing a locking groove 14 on the locking outer shell 12, and screwing the locking groove 14 and the locking block 201 to achieve locking.

[0056] In this embodiment, the lock slot 14 adopts a blind slot 144 arranged on the inner side wall of the locking outer shell 12. The lock slot 14 includes a slot 141 for adapting the locking block 201 to be inserted, an inner groove inclined surface 142 and a locking position 143 for cooperating with the locking block 201 at the external interface 200. One side of the inner groove inclined surface 142 is connected to the slot 141, and a locking position 143 is formed on the other side. The slot 141 is located on one side of the lock slot 14, and one side of the inner groove inclined surface 142 is connected to one side edge of the slot 141, and the other side is connected to the locking position 143. The locking position 143 is a recessed structure formed at the connection with the inner groove inclined surface 142, wherein the curved side of the slot 141, the inner groove inclined surface 142 and the recessed structure of the locking position 143 constitute one side edge of the lock slot 14, and this side edge and the straight edges of the other three sides form the complete structure of the lock slot 14. The inclined surface 142 in the groove is set to gradually tilt from the side of the groove 141 to the side of the locking position 143. The purpose of this setting is that by rotating and tightening the locking groove 14 and the matching locking block 201, the locking block 201 will press the inclined surface 142 in the groove and gradually push the dust cap 100 to move along the axial direction. Preferably, the inclined surface 142 in the groove is a planar structure set at an angle, and the concave structure formed at the connection between the locking position 143 and the inclined surface 142 in the groove is used as a fixed locking position for the matching locking block 201.

[0057] In this solution, the back of the cap 11 is also provided with a hanging rope boss 111 and a manual knob 112 located in the center; the manual knob 112 is symmetrically arranged on both sides of the hanging rope boss 111. In order to facilitate the observation of whether the dust cap 100 is installed in place, an indicator hole 113 for observing whether the dust cap 100 is installed in place is also provided on the periphery of the hanging rope boss 111, and an indicator arrow 114 for indicating the locking and unlocking directions is also provided on the outer peripheral surface of the locking outer shell 12.

[0058] In this embodiment, a sealing surface 19 is provided at the plug-in end of the locking outer housing 12. This surface compresses an outer sealing ring 202 disposed around the outer periphery of the external interface 200, thereby forming a seal against the exterior of the external interface 200. Preferably, a sealing step is formed on the end face of the sealing surface 19 for pressing the outer sealing ring 202 together, thereby further enhancing the pressure-fitting seal. This sealing method utilizes an end-face sealing method that presses the outer sealing ring 202 against the outer periphery of the external interface 200, thereby achieving the sealing effect of the dust cap 100.

[0059] This embodiment also provides an anti-slip sealing connection assembly, including the above-mentioned anti-slip sealing dust cap 100 and an adapting external interface 200. The adapting external interface 200 is located on the connection base body. The connection base body is provided with fastening holes 204 fixed by screws around it. The periphery of the adapting external interface 200 is provided with locking arms 205 that match the number of locking slots 14. An outwardly protruding locking block 201 is provided on the outer wall of the locking arm 205, and an outer sealing ring 202 is provided on the periphery of the adapting external interface 200. When the anti-slip sealing dust cap 100 is plugged into the adapting external interface 200, the dust cap 100 and the external interface 200 further rotate relative to each other, the locking block 201 is hooked with the locking slot 14, and the sealing surface 19 of the plug-in end of the locking outer shell 12 contacts the outer sealing ring 202 to achieve a compression seal at the connection; the outer sealing ring 202 02 also plays the following role: when the anti-slip sealing dust cap 100 is inserted into the external interface 200 and twisted relative to each other, the inner inclined surface 142 of the locking groove 14 cooperates with the locking block 201. At this time, under the cooperation of the inner inclined surface 142 of the locking groove 14 and the locking block 201, the dust cap 100 gradually moves along the axial direction toward the side close to the external interface 200, so that the sealing surface 19 of the dust cap 100 gradually presses the outer sealing ring 202 to better achieve the sealing effect. During the installation process of the dust cap 100, the outer sealing ring 202 is first squeezed by the dust cap 100. When the dust cap 100 is tightened to the locking position, the elastic force of the outer sealing ring 202 will react and squeeze the dust cap 100, causing the locking block 201 to sink into the locking position 143 of the dust cap, thereby achieving a firm and fixed connection between the dust cap 100 and the external interface 200.

[0060] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications 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 are still within the scope of the technical solution of the present invention.

Claims

1. An anti-drop sealing dust cap, comprising a dust cap body, characterized in that: The dust cap body includes a cap and a locking outer shell provided on one end surface of the cap, the plug-in end of the locking outer shell is formed with a plug-in cavity, the plug-in cavity is used to be plugged and connected with the matching external interface, and a locking groove is formed on the side wall of the locking outer shell, the locking groove is used to lock with the locking block at the matching external interface; The dust cap body is also provided with an inner seal, which is located in the locking outer shell and is used to be inserted into the adapter external interface to form a seal inside the external interface; And\or the plug-in end of the locking outer shell is formed with a sealing surface; the sealing surface is used to compress the outer sealing ring arranged on the periphery of the adapting external interface to form a seal on the periphery of the external interface.

2. The anti-drop sealing dust cap according to claim 1, characterized in that: The inner sealing member is detachably connected to the dust cap body.

3. The anti-drop sealing dust cap according to claim 1, characterized in that: The inner seal includes a sealed inner shell and an inner sealing ring with a hollow structure. The locking outer shell and the sealed inner shell are coaxially arranged, and an annular plug-in cavity is formed between the locking outer shell and the sealed inner shell. The sealed inner shell is provided with an inner sealing ring, and a lock groove is provided on the side wall of the locking outer shell.

4. The anti-drop sealing dust cap according to claim 3, characterized in that: An annular mounting groove for mounting an inner sealing ring is formed on the outer wall surface of the sealed inner shell; Or the plug connector of the sealed inner housing is provided with an annular mounting platform for mounting the inner sealing ring.

5. The anti-drop sealing dust cap according to claim 3, characterized in that: The inner sealing member extends outward from the locking outer shell and exposes the plug-in end of the locking outer shell.

6. The anti-drop sealing dust cap according to claim 3, characterized in that: The inner sealing ring is arranged on the sealed inner housing by injection molding.

7. The anti-drop sealing dust cap according to claim 1, characterized in that: A rope hanging boss and a manual knob are provided on the end surface of the cap on one side facing away from the plug-in end.

8. The anti-drop sealing dust cap according to any one of claims 1 to 7, characterized in that: The locking groove is a blind groove arranged on the inner wall of the locking outer shell.

9. The anti-drop sealing dust cap according to claim 8, characterized in that: The locking slot has an inner groove inclined surface for cooperating with the locking block at the adapter external interface; a notch is set on one side of the inner groove inclined surface, and a locking position for hanging and fixing with the adapter locking block is formed on the other side of the inner groove inclined surface, and the inner groove inclined surface gradually inclines from the notch side to the locking position side.

10. An anti-slip sealing connection assembly, characterized in that: The utility model comprises an anti-drop sealing dust cap as claimed in any one of claims 1 to 9 and an external connection interface adapted to be connected with the dust cap.

11. The anti-slip sealing connection assembly according to claim 10, characterized in that : A locking block is provided on the outer wall of the external interface, and an outer sealing ring is provided on the outer port of the external interface. The outer sealing ring is provided on the side of the locking block away from the plug-in interface. After the dust cap is docked with the adapter external interface, the inner sealing member is inserted into the interior of the external interface, and the inner sealing member contacts the inner wall of the external interface to achieve an inner radial seal. After the dust cap and the external interface are relatively rotated, the locking block is hooked and fixed with the locking groove, and the sealing surface of the plug-in end of the locking outer shell contacts the outer sealing ring to achieve an outer seal. Or a locking block is provided on the outer side wall of the external interface, and an outer sealing ring is provided on the outer side of the external interface port. After the dust cap is docked with the matching external interface, the dust cap and the external interface rotate relative to each other, and the locking block is hung and fixed with the locking groove, and the sealing surface of the plug-in end of the locking outer shell contacts the outer sealing ring to realize outer sealing.

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