阅读说明：本技术 一种防尘盖 (Dust-proof cover ) 是由 刘帅杰 王伟 于 2018-12-24 设计创作，主要内容包括：本发明提供了一种防尘盖,防尘盖包括用于由前向后移动扣装在连接器壳体上的盖体,所述盖体上转动装配有锁止件,锁止件的转动轴线延伸方向垂直于前后方向,所述锁止件的后端具有卡勾,所述卡勾在转动行程上具有置于连接器壳体的锁止槽内且与锁止槽在向前方向上挡止配合的锁止位,还具有由锁止槽内转出的解锁位,防尘盖包括用于驱动卡勾沿径向正向摆入锁止槽内并保持在锁止位的弹性件,还包括受力后克服弹性件的弹性力以驱动卡勾由锁止位反向摆动至解锁位的驱动结构,所述卡勾具有在盖体由前向后移动扣装在连接器壳体上时与连接器壳体沿前后方向顶压配合的改向斜面,所述改向斜面用于驱动卡勾反向摆动以越过连接器壳体中锁止槽的前侧部分。(The invention provides a dustproof cover, which comprises a cover body, a locking piece and an unlocking position, wherein the cover body is used for being buckled on a connector shell in a forward and backward moving way, the cover body is rotationally assembled on the cover body, the extension direction of the rotation axis of the locking piece is vertical to the forward and backward direction, the rear end of the locking piece is provided with a clamping hook, the clamping hook is provided with a locking position which is arranged in a locking groove of the connector shell and is in blocking and matching with the locking groove in the forward and backward direction on the rotation stroke, the unlocking position is rotated out of the locking groove, the dustproof cover comprises an elastic piece and a driving structure, the elastic piece is used for driving the clamping hook to swing into the locking groove in the radial forward direction and keep at the locking position, the dustproof cover also comprises a redirection inclined plane, the redirection inclined plane is used for pushing and matching with the connector shell in the forward and backward direction when the cover body is buckled on the connector shell in the forward and backward moving way, the direction-changing inclined surface is used for driving the clamping hook to reversely swing so as to cross the front side part of the locking groove in the connector shell.)

1. A dust cover comprising a cover body for being snap-fitted to a connector housing by moving forward and backward, characterized in that: the cover body is rotatably assembled with a locking piece, the extension direction of the rotation axis of the locking piece is vertical to the front-back direction, the rear end of the locking piece is provided with a clamping hook, the clamping hook is provided with a locking position which is arranged in a locking groove of the connector shell and is in locking fit with the locking groove in the forward direction on the rotation stroke, and is also provided with an unlocking position which is rotated out of the locking groove, the dustproof cover comprises an elastic piece which is used for driving the clamping hook to swing into the locking groove in the radial forward direction and is kept at the locking position, and a driving structure which overcomes the elastic force of the elastic piece after being stressed so as to drive the clamping hook to swing reversely from the locking position to the unlocking position, the clamping hook is provided with a bend inclined plane which is in press fit with the connector shell along the front and back direction when the cover body is moved forwards and backwards and is buckled on the connector shell, the direction-changing inclined surface is used for driving the clamping hook to reversely swing so as to cross the front side part of the locking groove in the connector shell.

2. The dust cover of claim 1, wherein: the driving structure comprises a driving part which is assembled on the cover body in a guiding and moving mode, the guiding and moving direction of the driving part is perpendicular to the front-back direction and the extending direction of the rotation axis of the locking part, the driving part is provided with a locking part pushing end which is used for pushing the front end of the locking part so that the clamping hook swings from the locking position to the unlocking position, and a force application part which is used for pulling the driving part to move in a guiding mode is further arranged on the cover body.

3. The dust cover of claim 2, wherein: the force application part comprises a handle, the middle part of the handle is rotatably assembled on the cover body, the rotation axis of the handle is parallel to the rotation axis of the locking part, one end of the handle is used for pulling the transmission part to move in a guiding mode, and the other end of the handle is a force application end.

4. The dust cover of claim 3, wherein: the pull handle is a pull ring with a ring buckle at the stress end.

5. The dust cover according to claim 3 or 4, wherein: the handle is characterized in that a cover body groove is formed in the front end face of the cover body, the transmission part is embedded in the cover body groove, the handle is rotatably assembled on the groove wall of the cover body groove, and a handle elastic part used for driving the handle to rotate towards the direction of the groove bottom of the cover body groove is arranged between the handle and the cover body.

6. The dust cover of claim 5, wherein: one side of the handle, which faces the bottom of the groove of the cover body, is provided with a positioning rod which is used for being pressed against the bottom of the groove of the cover body and is matched with the elastic piece of the handle so as to position the handle.

7. The dust cover according to claim 2, 3 or 4, wherein: the front end of the locking piece is located in the annular hole, and the annular hole is provided with a pushing inner hole wall used for pushing the front end of the locking piece to enable the drag hook to swing from a locking position to an unlocking position.

Technical Field

The invention relates to a dust cover.

Background

Along with the enhancement of energy-saving and environment-friendly awareness of people, electric automobiles are more and more widely used. The electric vehicle is generally provided with a charging socket for supplementing electric energy, and a dust cover is generally arranged outside the charging socket in order to prevent sundries or dust from entering the charging socket. Among the prior art, the supporting shield of the socket that charges of direct plug-in has two kinds of forms: one type is provided with no locking structure, the dustproof cover is tightly matched with the socket by the self structure to realize the fixation of the dustproof cover, but the dustproof cover in the form is easy to separate along with the vibration of the connector when in use; another form is shown in the chinese patent application publication No. CN 105244677A.

The Chinese invention patent application discloses a dust cover and a connector assembly using the same, wherein the connector assembly comprises a connector shell and the dust cover, the dust cover comprises a cover body which is buckled on the connector shell from front to back, a locking groove is arranged on the connector shell, a locking block with a rotation axis extending along the front-back direction is rotatably assembled on the cover body, the locking block is provided with a locking position which is matched with the locking groove on the connector shell in a stopping way in the forward direction within the rotation stroke of the locking block, and the locking block is also provided with an unlocking position which rotates from the locking groove and can move from back to front relative to the connector shell. The cover body is provided with a locking mechanism, the locking mechanism comprises an elastic piece which enables the locking block to be kept at the locking position, and a bearing part which enables the locking block to overcome the elastic force of the elastic piece and rotate to the unlocking position from the locking position when stressed.

The dust cover in the form can be kept at the position for closing the connector shell under the action of no external force, and even if the connector can vibrate in normal use, the dust cover cannot fall off. However, as can be seen from the above description, when the dust cap is fastened to the connector housing from front to back, a manual force is required to be applied to the force-bearing portion, so that the locking block can be fastened to the connector housing after rotating from the locking position to the unlocking position, which causes inconvenience in the fastening operation.

Disclosure of Invention

The invention aims to provide a dustproof cover to solve the technical problem that the operation is inconvenient when the dustproof cover is buckled on a connector shell in the prior art.

In order to achieve the purpose, the technical scheme of the dustproof cover is as follows: a dust cover comprises a cover body which is used for being buckled on a connector shell in a forward and backward moving mode, a locking piece is assembled on the cover body in a rotating mode, the extending direction of the rotating axis of the locking piece is perpendicular to the forward and backward directions, the rear end of the locking piece is provided with a clamping hook, the clamping hook is provided with a locking position which is arranged in a locking groove of the connector shell and is in locking fit with the locking groove in the forward direction on the rotation stroke, and is also provided with an unlocking position which is rotated out of the locking groove, the dustproof cover comprises an elastic piece which is used for driving the clamping hook to swing into the locking groove in the radial forward direction and is kept at the locking position, and a driving structure which overcomes the elastic force of the elastic piece after being stressed so as to drive the clamping hook to swing reversely from the locking position to the unlocking position, the clamping hook is provided with a bend inclined plane which is in press fit with the connector shell along the front and back direction when the cover body is moved forwards and backwards and is buckled on the connector shell, the direction-changing inclined surface is used for driving the clamping hook to reversely swing so as to cross the front side part of the locking groove in the connector shell.

The invention has the beneficial effects that: when the dustproof cover is used, when the cover body is buckled on the connector shell from back to front, the clamping hook on the cover body overcomes the elastic force of the elastic piece to reversely swing under the driving of the bend slope, and after the clamping hook crosses the part on the front side of the locking groove on the connector shell, the clamping hook positively swings into the locking groove under the action of the elastic piece and is in blocking fit with the locking groove in the front direction, so that the dustproof cover is prevented from being separated from the connector shell. During the unblock, drive structure drive locking piece and trip reverse pendulum out the locking groove for the trip is arranged in the locking position, later can take out the shield by on the connector housing. According to the invention, when the cover body is buckled on the connector shell from back to front, an operator does not need to press the clamping hook, and the clamping hook can be automatically swung into the locking groove and kept at the locking position. Compared with the prior art, the operation is more convenient.

Further, the driving structure comprises a driving part assembled on the cover body in a guiding and moving mode, the guiding and moving direction of the driving part is perpendicular to the front-back direction and the extending direction of the rotation axis of the locking part, the driving part is provided with a locking part pushing end used for pushing the front end of the locking part to enable the clamping hook to swing from the locking position to the unlocking position, and a force application part used for pulling the driving part to move in a guiding mode is further arranged on the cover body.

The effect of this scheme lies in, and the driving medium through the direction removal pushes away the front end of locking piece, makes the trip on the locking piece by locking position swing to unblock position, sets up the application of force piece simultaneously and drives the driving medium and remove, can make things convenient for operating personnel to carry out the application of force by the outside of lid through setting up application of force piece and driving medium.

Furthermore, the force application part comprises a handle, the middle part of the handle is rotatably assembled on the cover body, the rotation axis of the handle is parallel to the rotation axis of the locking part, one end of the handle is used for pulling the transmission part to move in a guiding mode, and the other end of the handle is a force application end.

The effect of this scheme lies in, specifically to the structure of application of force spare, and application of force spare is including rotating the handle of assembly on the lid, sets up the handle into the aim at of rotating the assembly, when need not operating the handle, can be close to the lid with the handle and arrange, reduces the shared space of shield when normal use.

Further, the pull handle is a pull ring with a buckle at the stress end.

The effect of this scheme lies in, the handle is the pull ring, and the pull ring has the latch closure, and operating personnel can stretch into the latch closure with the hand in order to operate, and after the trip is driven by locking position and is swung to unblock position, can directly pull away the shield by connector housing through the latch closure, can realize the one-hand fast operation.

Furthermore, a cover body groove is formed in the front end face of the cover body, the transmission part is embedded in the cover body groove, the handle is rotatably assembled on the groove wall of the cover body groove, and a handle elastic part used for driving the handle to rotate towards the bottom of the cover body groove is arranged between the handle and the cover body.

The effect of this scheme lies in, inlays the dress in the lid recess through setting up lid recess and driving medium on lid front end terminal surface, and the effort towards lid recess tank bottom direction is applyed to the handle elastic component for the handle can hold in the lid recess when not receiving the exogenic action, has increased the outside whole aesthetic property of shield, simultaneously, has also reduced the occupation space of shield.

Furthermore, one side of the handle, which faces the bottom of the groove of the cover body, is provided with a positioning rod which is used for being pressed against the bottom of the groove of the cover body and is matched with the elastic piece of the handle so as to position the handle.

The effect of this scheme lies in, through setting up and handle elastic component complex locating lever, can be fixed a position the handle in the lid recess, owing to set up the locating lever for the tank bottom of lid recess can not hugged closely completely to the handle, leaves the space between the tank bottom of handle and lid recess, makes things convenient for operating personnel to pull.

Furthermore, the driving member is provided with a ring hole extending from front to back at the pushing end of the locking member, the front end of the locking member is located in the ring hole, and the ring hole is provided with a pushing inner hole wall used for pushing the front end of the locking member so as to enable the drag hook to swing from the locking position to the unlocking position.

The effect of this scheme lies in, sets up the annular ring and makes the front end of locking piece put in the lid annular ring through the driving medium on, and concrete drive can drive the front end of locking piece through the top of annular ring pushes away the inner hole wall, and overall structure is comparatively simple.

Drawings

FIG. 1 is a schematic view of an embodiment of a dust cap of the present invention;

FIG. 2 is a schematic view of FIG. 1 with the cover removed;

FIG. 3 is a sectional view of FIG. 1 (no section lines are shown);

FIG. 4 is a schematic view of the embodiment of the dust cap of the present invention with the hook in the locking position;

FIG. 5 is a schematic view of an embodiment of a dust cap of the present invention with a hook in an unlocked position;

description of reference numerals: 100-dust cover; 11-a cover body; 12-a pull ring; 13-a transmission member; 14-a tab torsion spring; 15-a force application part; 16-a locking lever; 17-locking lever torsion spring; 18-a hook; 19-positioning the rod; 110-a cover recess; 111-threading holes; 200-a connector housing; 21-a convex ring; 22-locking groove.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

In the specific embodiment of the dust cap of the present invention, as shown in fig. 1 to 5, the dust cap 100 is fastened to a connector housing 200 of a connector from front to back in use, wherein the connector housing 200 is structured as shown in fig. 4, the connector housing 200 includes a protruding ring 21 at a front end, and a locking groove 22 with a radially outward opening is formed in the protruding ring 21. In this embodiment, the connector is specifically a conductive socket.

As shown in fig. 2 to 5, the dust cap 100 includes a cap body 11 that is fastened to the connector housing 200, a cap body groove 110 that opens forward is formed in the cap body 11, and a through hole that extends rearward is formed at a bottom of one end groove of the cap body groove 110, and the position of the through hole corresponds to the position of the locking groove 22. A pull ring rotating shaft with an axis extending in a direction perpendicular to the front-rear direction is arranged in the cover body groove 110, a pull ring 12 is rotatably sleeved outside the pull ring rotating shaft, and the middle part of the pull ring 12 is rotatably sleeved on the pull ring rotating shaft. A tab torsion spring 14 is further provided between the tab 12 and the lid body 11, and the tab torsion spring 14 applies an urging force to the tab 12 toward the bottom of the lid body recess 110, so that the tab 12 is held in the lid body recess 110.

A lock rod rotating shaft is fixedly mounted on the groove wall of the cover body groove 110, a lock rod 16 is rotatably sleeved on the lock rod rotating shaft, the rear end of the lock rod 16 extends into the through hole, and the rear end of the lock rod 16 is provided with a clamping hook 18. As shown in fig. 3 and 4, when the hook 18 is screwed into the locking groove 22, the hook 18 is in stop engagement with the front groove wall of the locking groove 22 in the forward direction, so as to prevent the hook 18 from being pulled out forward. The side of the hook 18 facing the locking groove 22 is a slope, and the slope is from the front to the back and from the direction close to the locking groove 22 to the direction far away from the locking groove 22. The inclined surface has the effect that when the hook 18 is fastened on the connector housing 200 with the cover 11 moving from front to back, the inclined surface of the hook 18 is pressed against the convex ring 21 in the moving process and swings in the direction away from the locking groove 22 under the action of the inclined surface, so that the hook 18 avoids the front part of the locking groove 22 in the convex ring 21, and after the hook moves to the position of the locking groove 22, the hook 18 swings into the locking groove 22 under the action of the elastic force of the lock rod torsion spring 17, and the anti-disengagement and blocking with the locking groove 22 are realized.

As can be seen from fig. 3, the middle portion of the lock lever 16 is rotatably sleeved on the lock lever rotating shaft, the lock lever 16 and the pull ring 12 are arranged at intervals in the left-right direction, the rotating axis of the lock lever 16 is parallel to the rotating axis of the pull ring 12, a transmission member 13 is arranged between the lock lever 16 and the pull ring 12, the transmission member 13 can move in the cover body groove 110 in the left-right direction in a guiding manner, and the guiding direction is perpendicular to the front-back direction and the extending direction of the lock lever rotating shaft. Specifically, in this embodiment, the driving member 13 is a connecting frame that is guided and fitted in the groove 110 of the cover body, the leftmost end of the connecting frame has the force application portion 15, the left end of the connector has a ring hole, the front end of the lock lever 16 extends into the ring hole, and the left end of the pull ring 12 also extends into the connecting frame. The side surface of the force application part 15 which is in abutting fit with the lock rod 16 is the pushing inner hole wall of the annular hole.

In this embodiment, a cover plate is covered on the cover body groove 110, the cover plate corresponds to the driving member 13 in front and back, and the cover plate is removed in fig. 2.

When the dust cover 100 and the connector are separated, the lock lever 16 in the dust cover 100 is held in the position shown in fig. 3 (i.e., the lock position) by the lock lever torsion spring 17, and the front end of the lock lever 16 pushes the urging portion 15 so that the transmission member 13 is in the leftmost position. At this point, tab 12 is retained within cap recess 110 by tab torsion spring 14. As can be seen from fig. 5, a positioning rod 19 is disposed inside the tab 12, and when the tab 12 is disposed in the lid body groove 110, the positioning rod 19 is in press fit with the bottom of the lid body groove 110 and is engaged with the tab torsion spring 14 to position the tab 12. Moreover, due to the existence of the positioning rod 19, a certain space is formed between the pull ring 12 and the groove bottom of the cover body groove 110, so that an operator can pull the pull ring 12 outwards conveniently.

When the dust cap 100 is fastened to the connector housing 200 by moving from front to back, the inclined surface of the hook 18 is in press fit with the convex ring 21 and the hook 18 swings in a direction away from the locking groove 22, so that the hook 18 can go over the convex ring 21, when the hook 18 reaches the locking groove 22, the lock lever 16 swings into the locking groove 22 under the action of the lock lever torsion spring 17, and the hook 18 and the locking groove 22 are in forward stop fit to prevent disengagement.

When the dust cap 100 is pulled out from the connector housing 200, as shown in fig. 4, the pull ring 12 is pulled outward in the direction of the arrow, one end of the pull ring 12 pulls the transmission member 13, so that the force application portion 15 of the transmission member 13 pulls the rear end of the lock lever 16 to swing, the hook 18 swings out of the locking groove 22 to the position shown in fig. 5 (i.e., the unlocking position), and then the pull ring 12 pulls the dust cap 100 forward.

In this embodiment, the rotation axis of the pull ring is located at a position near the middle in the left-right direction, which facilitates the pull ring 12 to pull the dust cap 100 forward.

In this embodiment, the pull ring 12 forms a pull handle with a buckle, i.e. a force application member, and the force application member and the transmission member 13 together form a driving structure. In other embodiments, the driving structure may be a pull rope, one end of the pull rope is connected to the lock rod, and the other end of the pull rope is a stressed end.

The end of the transmission member 13 where the force application portion 15 is located is a locking member urging end for urging the lock lever 16 to swing, and the lock lever 16 constitutes a locking member. In this embodiment, the lock rod torsion spring 17 constitutes an elastic member of the locking member, and the pull ring torsion spring 14 constitutes a pull ring elastic member, in other embodiments, both the elastic member of the locking member and the pull ring elastic member may be a tension spring or a compression spring, etc. disposed between the cover body and the corresponding locking member and pull ring.

In this embodiment, the inclined surface of the hook 18 forms a direction-changing inclined surface.

In this embodiment, the cover 11 is further provided with a threading hole 111, and during assembly, a rope or a pull rope is connected to the threading hole 111, and the other end of the rope or the pull rope is connected to the connector housing 200, so as to prevent the dust cover from being lost.

In this embodiment, the direction from the unlocking position to the locking position of the hook 18 is a forward direction, and the direction from the locking position to the unlocking position is a reverse direction.