CN110534976B

CN110534976B - Novel electronic lock sealing structure and waterproof electronic lock using same

Info

Publication number: CN110534976B
Application number: CN201910677163.6A
Authority: CN
Inventors: 郑文杰; 于香香; 高宁
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2021-07-30
Anticipated expiration: 2039-07-25
Also published as: CN110534976A

Abstract

A novel electronic lock sealing structure comprises a sheath made of soft materials, wherein the sheath is provided with a cavity for a lock rod or an encapsulated steel wire rope to pass through, the inner wall of a small-diameter end of the sheath is axially provided with a plurality of first convex ribs for extruding the lock rod or the encapsulated steel wire rope passing through the cavity to seal, and the two sides of a large-diameter end of the sheath are respectively provided with a plurality of second convex ribs for compressing an electronic lock shell to seal when the lock rod passes through the cavity or the inner wall of the large-diameter end of the sheath is axially provided with a plurality of second convex ribs for extruding an encapsulated spiral pipe arranged in the large-diameter end of the sheath when the encapsulated steel wire rope passes through the cavity; the sheath between the first convex rib and the large-diameter end is provided with a fold part which can elastically stretch when the lock rod stretches or the rubber-coated steel wire rope stretches. The waterproof electronic lock adopting the novel sealing structure has the waterproof performance reaching IP67 and above, and the service life reaching more than 10 ten thousand times.

Description

Novel electronic lock sealing structure and waterproof electronic lock using same

Technical Field

The invention belongs to the technical field of new energy automobile charging, and particularly relates to a novel electronic lock sealing structure and a waterproof electronic lock using the same.

Background

According to the requirements of the new energy automobile charging national standard GB/T20234-2015, please refer to fig. 1, the ac charging stand 1 should have an electronic lock 2 for locking the inserted charging gun and charging stand during the charging process, so as to avoid the safety accident caused by hot plugging. The electronic lock has the following functions in the system: and receiving vehicle signal control, wherein the lock rod 3 extends out of the flange plate 101 of the charging seat during charging, and the lock rod 3 retracts into the flange plate 101 of the charging seat after charging is finished. If the vehicle is powered off accidentally during the charging process, the emergency unlocking pull rope 4 can be pulled to retract the lock rod. Under various use environments, the lock rod 3 and the emergency unlocking pull rope 4 are both movable components.

Since the charging base 1 is installed on a vehicle, the electronic lock is applied to a vehicle-mounted environment, and there is a possibility that the electronic lock may be sprayed with water in rainy days or during vehicle washing, and therefore, the waterproof performance of the electronic lock 2 is required to reach IP67 or above. Common electronic lock can divide into micro motor drive, electro-magnet drive etc. according to drive structure at present, can divide into knob type and stay cord type etc. according to emergent unblock form, but its protection level generally can't satisfy IP67, because two movable part: the lock lever 3 and the emergency release cord 4 are difficult to protect. The number of times of plugging and unplugging the charging seat is required to be not less than 1 ten thousand by the standard GB/T20234-2015, so the cycle service life of the electronic lock 2 is not less than 1 ten thousand, and the conventional requirement reaches 10 ten thousand or even higher (one cycle of locking and unlocking counts the 1-time service life).

Referring to fig. 2, for the lock rod of the electronic lock, the conventional sealing scheme is rubber ring sealing, that is, a rubber ring 5 is inserted into a gap between the electronic lock housing 201 and the lock rod 3, and the rubber ring is in interference fit with both the electronic lock housing and the lock rod. This sealing solution allows a static seal to be achieved, but the tightness of the locking rod in its movement remains to be checked. In addition, the locking rod needs to reciprocate more than 20 ten thousand times according to the conventional requirement, the locking rod repeatedly rubs with rubber for a long time, the rubber ring is inevitably worn and aged, and the long-term sealing property cannot be ensured.

Referring to fig. 3, the pull-cord type electronic lock generally uses a brake cable structure with an encapsulated steel cable passing through the encapsulated spiral tube, one end of the encapsulated spiral tube 401 is connected with a prefabricated threaded sleeve 402, and the threaded sleeve 402 is screwed on a locking nut 403 to fix the encapsulated spiral tube to the rear cover plate 202 of the electronic lock shell 201 through threaded connection. An encapsulated steel wire rope 404 penetrates through the encapsulated spiral pipe 401, the end part of the encapsulated steel wire rope extends into the electronic lock and is connected with the lock rod 3 through a mechanism, the other end part positioned outside the electronic lock is set as a pull ring, and the lock rod retracts by pulling the encapsulated steel wire rope when the vehicle is powered off unexpectedly. The drawbacks of this structure are: the pipe orifice M at the other end of the rubber-coated spiral pipe 401 is generally of a water-free structure, so that the water leakage risk exists. Since the end of the encapsulated wire rope 404 must be connected to the lock rod, once water enters the pipe orifice M, water enters the electronic lock along the encapsulated wire rope, causing water leakage. And the pull rope has more than tens of thousands of reciprocating drawing motions, and the structure shown in the figure can not meet the sealing requirement.

Disclosure of Invention

Aiming at the defect that the waterproof performance of the existing pull rope type electronic lock can not reach IP67 or above, the invention aims to provide the waterproof electronic lock with the novel sealing structure, so that the service lives of the lock rod and the pull rope meet the national standard, the sealing performance of the position of the lock rod and the position of the pull rope is ensured, and the waterproof performance of the electronic lock can reach IP67 or above.

The purpose of the invention is realized by adopting the following technical scheme. The invention provides a novel electronic lock sealing structure which comprises a sheath made of a soft material, wherein the sheath is provided with a cavity for a lock rod or an encapsulated steel wire rope to pass through, the inner wall of a small-diameter end of the sheath is axially provided with a plurality of first convex ribs for extruding the lock rod or the encapsulated steel wire rope passing through the cavity to seal, and two sides of a large-diameter end of the sheath are respectively provided with a plurality of second convex ribs for compressing an electronic lock shell to seal when the lock rod passes through the cavity or the inner wall of the large-diameter end of the sheath is axially provided with a plurality of second convex ribs for extruding an encapsulated spiral pipe which is arranged in the large-diameter end of the sheath when the encapsulated steel wire rope passes through the cavity; the sheath between the first convex rib and the large-diameter end is provided with a fold part which can elastically stretch when the lock rod stretches or the rubber-coated steel wire rope stretches.

Furthermore, when the cavity of the sheath is used for the lock rod to pass through, the port of the small-diameter end of the sheath is provided with a convex edge which extends towards the inside of the sheath and is used for being clamped into the groove on the lock rod.

Further, the sheath is made of rubber.

The purpose of the invention is realized by adopting the following technical scheme. According to the waterproof electronic lock with the novel sealing structure, the waterproof electronic lock comprises a shell, a lock rod, a rubber-coated spiral pipe, a rubber-coated steel wire rope, two sheaths and a compression shaft sleeve, wherein two sides of the large-diameter end of one sheath are respectively provided with a second convex rib, and the inner wall of the large-diameter end of the other sheath is provided with a second convex rib along the axial direction;

the shell is provided with a step hole, the lock rod penetrates through the cavity of one of the sheaths and then the sheath is arranged in the step hole, the compression shaft sleeve is arranged in the step hole by interference fit, the end surface of the compression shaft sleeve compresses the large-diameter end of the sheath when the compression shaft sleeve is assembled in place, the first convex rib extrudes the lock rod to seal, and the second convex rib compresses the electronic lock shell to seal;

the large-diameter end of the other sheath is forcibly arranged on the outer side of the other end of the rubber coating spiral pipe through interference fit, the rubber coating steel wire rope sequentially penetrates through the cavity of the other sheath and the rubber coating spiral pipe and then is connected with the lock rod, when the rubber coating spiral pipe is assembled in place, the rubber coating steel wire rope is extruded by the first convex rib to be sealed, and the rubber coating spiral pipe is extruded by the second convex rib to be sealed.

Furthermore, the lock rod is provided with a groove, a convex rib extending towards the inside of the sheath is arranged at the port of the small-diameter end of one sheath, and the convex rib is clamped into the groove when the convex rib is assembled in place.

The novel electronic lock sealing structure comprises a sheath with a fold part, a first convex rib and a second convex rib, wherein the fold part is used for matching with two movable parts, so that the sheath can elastically stretch when a lock rod stretches or a pull rope pulls, and the service life is prolonged; the first convex rib is used for being matched with the lock rod or the rubber-coated steel wire rope for sealing, and the second convex rib is used for being matched with the electronic lock shell or the rubber-coated spiral pipe for sealing, so that the sealing reliability is improved. The waterproof electronic lock adopting the sealing structure has the waterproof performance reaching IP67 and above, and the service life reaching more than 10 ten thousand times.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic diagram of a conventional vehicle-mounted ac charging cradle.

Fig. 2 is a schematic view of a conventional structure of a lock lever of a conventional electronic lock.

Fig. 2A is an enlarged schematic view at a in fig. 2.

Fig. 3 is a schematic view of a conventional structure of an emergency unlocking cord of a conventional electronic lock.

Fig. 4A is a schematic view of a novel electronic lock sealing structure according to a first embodiment of the present invention.

Fig. 4B is a schematic cross-sectional view of fig. 4A.

Fig. 5A is a schematic view of a second embodiment of the sealing structure of the novel electronic lock according to the present invention.

Fig. 5B is a schematic cross-sectional view of fig. 5A.

Fig. 6 is a schematic view of an embodiment of a waterproof electronic lock using a novel sealing structure according to the present invention.

Fig. 7 is a schematic view of the electronic lock shown in fig. 6 in a natural state.

Fig. 7A is an enlarged schematic view at C in fig. 7.

Fig. 8 is a schematic view of the electronic lock shown in fig. 6 in a locked state.

Fig. 8A is an enlarged schematic view at B in fig. 8.

Fig. 9 is a schematic view of an emergency release pull rope sealing structure of the electronic lock of the present invention.

Fig. 9A is an enlarged schematic view at D in fig. 9.

[ description of main element symbols ]

1-AC charging seat 2-electronic lock 201-shell

202-rear cover plate 3-locking rod 4-emergency unlocking pull rope

5-rubber ring 6-signal wire 701-sheath

702-cavity 703-first rib 704-second rib

705-fold 706-fin 8-compression sleeve

9-O type sealing ring

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.

Example one

Referring to fig. 4A and 4B, the sealing structure provided in this embodiment is used for sealing the position of the locking rod, and includes a sheath 701 made of a rubber material, where the sheath 701 has a cavity 702 through which the locking rod 3 passes, and the inner wall of the small-diameter end of the sheath is provided with a plurality of first ribs 703 along the axial direction, and the first ribs 703 are used for realizing sealing by interference fit with the locking rod 3 passing through the cavity 702; the two sides of the large-diameter end of the electronic lock are respectively provided with a plurality of second convex ribs 704 which are arranged along the radial direction, each second convex rib 704 is in a circular ring shape, the second convex rib positioned on the left side of the large-diameter end is used for being matched with the shell of the electronic lock, and the second convex rib positioned on the right side of the large-diameter end is used for being matched with the compression shaft sleeve. The sheath between the first bead and the large diameter end has a spring-like fold 705 which can be squeezed or stretched to achieve elastic expansion and contraction of the sheath. The port department of sheath path end is equipped with along the bead 706 of circumference to the inside extension of sheath for realize fixedly with the recess cooperation on the locking lever 3, can drive the sheath when the locking lever is flexible and stretch out and draw back.

Example two

Referring to fig. 5A and 5B, the sealing structure provided in this embodiment is used for sealing the position of the pulling rope, and includes a sheath 701 made of a rubber material, where the sheath 701 has a cavity 702 through which the rubber-coated steel wire rope 404 passes, and the inner wall of the small-diameter end of the sheath is provided with a plurality of first ribs 703 along the axial direction, and the first ribs 703 are used for realizing sealing in interference fit with the rubber-coated steel wire rope 404 passing through the cavity 702; the inner wall of its big footpath end is equipped with a plurality of second protruding muscle 704 along the axial, and second protruding muscle 704 is used for realizing sealed with the encapsulation spiral pipe 401 interference fit of adorning at the inside big footpath end of sheath by force. The sheath between the first bead and the large diameter end has a spring-like fold 705 which can be squeezed or stretched to achieve elastic expansion and contraction of the sheath.

Of course, in other embodiments of the present invention, other types of soft materials, such as silicone, may be used to make the sheath of the sealing structure.

EXAMPLE III

Referring to fig. 6, the waterproof electronic lock of the present embodiment is different from the existing pull-cord type electronic lock except that the sealing structures at the lock rod and the pull cord are different, and the other structures are completely the same and all include a housing 201, a back cover plate 202, a lock rod 3, and an emergency unlocking pull cord 4, and the assembly relationship of the components is not repeated.

The waterproof electronic lock provided by the embodiment adopts the sealing structure of the first embodiment to seal the lock rod, and specifically comprises the following steps: a step hole 2011 is formed in the electronic lock shell 201, the lock rod 3 penetrates through the cavity 702 of the sheath, then the sheath 701 is installed in the step hole 2011, the convex rib 706 at the end of the small-diameter end of the sheath is clamped into the groove in the lock rod when the electronic lock shell is assembled in place, and the first convex rib 703 extrudes the lock rod 3 to realize lock rod sealing; then will compress tightly in axle sleeve 8 adopts interference fit to adorn step hole 2011 by force, the terminal surface that compresses tightly the axle sleeve when the assembly targets in place compresses tightly the big footpath end of sheath, and the second protruding muscle 704 pressurized deformation of both sides is compressed tightly and is realized sealing to electronic lock shell 201.

Referring to fig. 7 and 7A, when the vehicle is not charged, the lock rod 3 of the electronic lock retracts into the flange 101 of the charging seat, and the lock rod sheath is in a natural state.

Referring to fig. 8 and 8A, when the vehicle is charged, the electronic lock receives a vehicle control signal, the lock rod 3 extends from the flange 101 of the charging seat, the lock rod 3 drives the sheath 701 to stretch and deform by the cooperation of the rib and the groove, the fold portion 705 deforms to lengthen the length of the sheath, and at this time, the first rib on the inner wall of the small diameter end of the sheath still extrudes the lock rod, and the second ribs on both sides of the large diameter end of the sheath are still extruded and compressed onto the housing of the electronic lock by the compression shaft sleeve, thereby achieving the sealing in the second state.

Referring to fig. 9 and 9A, the sealing structure of the second embodiment is used to seal the emergency unlocking cord of the waterproof electronic lock of the present embodiment, specifically: an O-shaped rubber ring 9 is additionally arranged in a gap formed by the threaded shaft sleeve 402, the locking nut 403 and the rear cover plate 202; then, the large-diameter end of the sheath 701 is forcibly installed on the outer side of the other end of the rubber-coated spiral pipe 401 through interference fit, the rubber-coated steel wire rope 404 sequentially penetrates through the cavity 702 of the sheath and the rubber-coated spiral pipe 401 and then is connected with the lock rod through a mechanism, when the rubber-coated spiral pipe is assembled in place, the first convex rib 703 on the inner wall of the small-diameter end of the sheath extrudes the rubber-coated steel wire rope 404, and the second convex rib 704 on the inner wall of the large-diameter end of the sheath extrudes the rubber-coated spiral pipe 401, so that the sealing of the pipe orifice at the other end of the rubber-coated spiral pipe is realized.

When the vehicle is powered off accidentally in the charging process, the rubber-coated steel wire rope 401 is pulled to enable the lock rod to retract into the flange plate of the charging seat for unlocking, the fold portion 705 deforms to enable the length of the sheath to be lengthened, the rubber-coated steel wire rope 404 is still extruded by the first convex rib 703 of the inner wall of the small diameter end of the sheath, and the rubber-coated spiral pipe 401 is still extruded by the second convex rib 704 of the inner wall of the large diameter end of the sheath, so that the pipe opening at the other end of the rubber-coated spiral pipe is sealed when the steel wire rope is in a pulling state.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention in any way, and any simple modification, equivalent change and modification made by those skilled in the art according to the technical spirit of the present invention are still within the technical scope of the present invention without departing from the technical scope of the present invention.

Claims

1. A waterproof electronic lock using a novel electronic lock sealing structure comprises a shell, a lock rod, an encapsulated spiral pipe and an encapsulated steel wire rope, and is characterized by further comprising two sealing structures, wherein each sealing structure comprises a sheath made of a soft material, the sheath is provided with a cavity for the lock rod or the encapsulated steel wire rope to pass through and is provided with a small-diameter end and a large-diameter end, and the sheath positioned between the first convex rib and the large-diameter end is provided with a fold part which can elastically stretch when the lock rod stretches or the encapsulated steel wire rope stretches; the inner wall of the small-diameter end of the sheath is axially provided with a plurality of first convex ribs for extruding a locking rod or an encapsulated steel wire rope penetrating through the cavity to seal, two sides of the large-diameter end of the sheath of one sealing structure are respectively provided with a plurality of second convex ribs for pressing the shell of the electronic lock to seal when the locking rod penetrates through the cavity, and the inner wall of the large-diameter end of the sheath of the other sealing structure is axially provided with a plurality of second convex ribs for extruding an encapsulated spiral pipe which is arranged in the large-diameter end of the sheath when the encapsulated steel wire rope penetrates through the cavity;

2. The waterproof electronic lock of claim 1, wherein the locking bar has a groove, and a bead extending inwardly of the jacket is provided at the port of the small diameter end of one of the jackets and is engaged in the groove when the jacket is in place.