CN212873399U - Unlocking device and fan module - Google Patents

Abstract

The utility model provides an unlocking device and fan module. The unlocking device comprises a shell, wherein the shell is enclosed to form an accommodating cavity; the rotating piece is rotatably connected with the shell and comprises a lug boss positioned in the accommodating cavity; elastic snap fastener, including: the fixing part is arranged in the accommodating cavity and fixedly connected with the shell; the abutting part is arranged in the accommodating cavity and connected with the fixing part, and the abutting part can abut against the lug to limit the rotation of the lug; the hook part is fixedly connected with the abutting part and can penetrate through a through hole formed in the shell, and the through hole is formed in the first direction; when the lug rotates to be in contact with the contact part, the lug presses the contact part to drive the hook part to move towards the first direction to be separated from the through hole; when the lug rotates to the state of releasing the interference with the abutting part, the abutting part drives the hook part to move in the direction opposite to the first direction to penetrate through the through hole. The utility model discloses an unlocking device can improve unlocking device's fail safe nature and aesthetic property.

Description

Unlocking device and fan module

Technical Field

The utility model belongs to the electronic equipment field, more specifically relates to an unlocking device and fan module.

Background

The fan module is widely applied to a chassis of electronic equipment such as a server and a memory as a heat dissipation element to dissipate heat of a chassis system. The fan module comprises a fan and an unlocking device, wherein the fan is used for air cooling and heat dissipation, and the unlocking device is used for locking and unlocking the fan module and the case. The unlocking device comprises an elastic buckle part with locking and unlocking functions.

Usually, the elastic fastener of the unlocking device is arranged outside the fan module structure, and the elastic fastener is arranged outside: on one hand, the unlocking device is easy to be impacted or collided to cause the risk of structural deformation and damage, and further the function failure of the unlocking device is caused; on the other hand, influence the aesthetic property of fan module structure outward appearance, the structure looks more loaded down with trivial details.

SUMMERY OF THE UTILITY MODEL

In view of this, the main objective of the present invention is to provide an unlocking device and a fan module, so as to solve the technical problem of how to improve the safety, reliability and aesthetic property of the unlocking device.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides an unlocking device, which comprises a shell, wherein the shell is enclosed to form an accommodating cavity; the rotating piece is rotatably connected with the shell and comprises a lug boss positioned in the accommodating cavity; elastic snap fastener, including: the fixing part is arranged in the accommodating cavity and fixedly connected with the shell; the abutting part is arranged in the accommodating cavity and connected with the fixing part, and the abutting part can be abutted against the lug to limit the rotation of the lug; the hook part is fixedly connected with the abutting part and can penetrate through a through hole formed in the shell, and the through hole is formed in the first direction; when the lug rotates to be in contact with the abutting part, the lug abuts against the abutting part to drive the hook part to move towards a first direction and separate from the through hole; when the lug rotates to the state of releasing the conflict with the butting part, the butting part drives the hook part to move in the direction opposite to the first direction to penetrate through the through hole.

Further, in the rotation direction of the rotating member, the radius of curvature of the wall surface of the protruding portion adjacent to the abutting portion gradually increases from one end to the other end and then gradually decreases, and the curvature of the wall surface of the abutting portion adjacent to the protruding portion is a fixed value.

Further, the wall surfaces of the lug and the abutting part adjacent to each other are both smooth curved surfaces.

Furthermore, a sliding groove communicated with the accommodating cavity is formed in the shell, the protruding block rotates in the sliding groove, and the length of the sliding groove is larger than that of the protruding block along the rotating direction.

Furthermore, the unlocking device further comprises a recovery piece, one end of the recovery piece is fixed with the rotating piece, and the other end of the recovery piece is fixed with the shell.

Further, when the restoring piece is in a natural state, the lug is not abutted against the abutting part; when the lug and the abutting part are in an abutting state, the restoring force of the restoring piece is maximum.

Further, the rotating member further includes: and the handle applies steering force, is fixedly connected with the lug and is far away from the accommodating cavity relative to the lug.

Further, the unlocking device further comprises a panel, the panel is arranged between the shell and the rotating piece, the panel is fixedly connected with the shell, and the panel is rotatably connected with the rotating piece.

Further, along the rotation direction, the thickness of the bump is gradually reduced and then gradually increased.

The utility model also provides a fan module, fan module includes fan and the unlocking device of above-mentioned arbitrary, the fan is installed hold the intracavity, just the fan with it is coaxial to rotate the piece.

The utility model provides a pair of unlocking device includes the casing, rotates piece and elasticity buckle spare, and wherein, the fixed part and the butt portion of elasticity buckle spare all set up in the intracavity that holds of casing, and the through-hole that the casing was seted up can be run through to the hook portion of elasticity buckle spare. The protruding block is arranged on the rotating part in a protruding mode in the circumferential direction, the protruding block can be abutted to the abutting part to drive the clamping hook part of the elastic clamping piece to move so as to be separated from the through hole, and the protruding block can also be abutted to the abutting part to be released so as to drive the clamping hook part to move so as to penetrate through the through hole. The utility model can realize the unlocking and locking of the unlocking device by rotating the rotating piece, has simple structural design, and the rotating piece and the shell are not separated from the contact all the time, and has flexible and convenient operation; and the fixing part and the abutting part of the elastic buckle piece are arranged in the accommodating cavity, so that the safety reliability and the attractiveness of the unlocking device can be effectively improved.

Drawings

Fig. 1 is an exploded view of an unlocking device according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a rotating member of the unlocking device according to the embodiment of the present invention;

fig. 3 is a schematic structural view of an elastic buckle of the unlocking device according to the embodiment of the present invention;

fig. 4 is a schematic view of an internal partial structure of an unlocking device according to an embodiment of the present invention in an operating state;

fig. 5 is a schematic view of an internal partial structure of an unlocking device according to an embodiment of the present invention in another operating state;

FIG. 6a is a schematic view of another alternative hook structure;

FIG. 6b is a schematic view of another structure of a hook portion;

fig. 7 is a schematic view of a bump structure of an unlocking device according to an embodiment of the present invention;

fig. 8 is a schematic view of a chute structure of the unlocking device according to the embodiment of the present invention;

fig. 9 is an assembly view of the unlocking device according to the embodiment of the present invention.

Description of reference numerals:

10-unlocking means, 11-housing, 111-receiving chamber, 112-through hole, 113-sliding groove, 12-elastic snap, 121-fixing part, 122-abutting part, 123-hook part, 13-rotating part, 131-handle, 132-base, 14-lug, 15-return, 16-panel, L1-distance from inner wall surface of middle area of lug to central axis, L2-distance from inner wall surface of one end of lug to central axis, L3-distance from inner wall surface of the other end of lug to central axis

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various combinations of the specific features of the present invention are not described separately.

In the following description, the directions referred to describe "upper" and "lower" are all directions in a normal use state.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. The term "coupled", where not otherwise specified, includes both direct and indirect connections. The "first direction" refers to a direction in which the bumps exert force on the abutting portions. "interference" means not only contact but also the presence of an interaction force between two components.

The utility model provides an unlocking device can be used as the locking and the unblock with quick-witted case of electronic equipment such as server, memory. It should be noted that the application scenario type in the present invention is not limited to the unlocking device of the present invention.

Taking the unlocking device applied to the fan module as an example, in the embodiment of the present invention, as shown in fig. 1, the unlocking device 10 includes a housing 11, an elastic buckling member 12 and a rotating member 13. The housing 11 encloses a receiving chamber 111. Specifically, the shape of the housing 11 is arbitrary, and may be substantially cubic, or may be substantially cylindrical, which may be determined according to actual needs, and in the exemplary embodiment, the housing 11 having a cubic shape is used for the following explanation. The housing 11 is a thin-walled member, and a space formed by enclosing is the accommodating cavity 111, and the accommodating cavity 111 can be used for placing a fan of the fan module.

As shown in fig. 1, the rotation member 13 is rotatably connected to the housing 11, and the rotation member 13 includes a protrusion 14 located in the receiving cavity 111. Specifically, the rotating member 13 includes a base 132 connected to the housing 11, the base 132 may be a substantially circular ring having a central axis, and the base 132 is located outside the accommodating chamber 111. The housing 11 is stationary and the base 132 is rotatable about a central axis, i.e. rotatable relative to the housing 11, under a force applied from the outside. As shown in fig. 2, a projection 14 fixedly connected to the base 132 is provided along the circumferential direction of the base 132, and the projection 14 is located inside the accommodating cavity 111 and can rotate with the rotation of the base 132.

As shown in fig. 3, the elastic latch 12 includes a fixing portion 121, an abutting portion 122, and a latch portion 123. Specifically, the elastic buckling member 12 may be a substantially sheet-like structure, the length extending direction of the elastic buckling member is consistent with the direction of the central axis, and the length dimension is much larger than the width dimension of the elastic buckling member, so that one end of the elastic buckling member 12 is fixed, and the other end opposite to the end is in a free state, so that an acting force is applied to the free end, the elastic buckling member 12 may be equivalent to a force arm, and under the action of the moment, the free end of the elastic buckling member 12 can generate displacement.

As shown in fig. 4, the fixing portion 121 is disposed in the accommodating cavity 111 and fixedly connected to the housing 11, specifically, for convenience of assembly and disassembly, in an exemplary embodiment, the fixing portion 121 is disposed on a lower surface of the housing 11, the fixing portion 121 is connected to a surface of the housing 11 by welding, bolts, or rivets, and the fixing portion 121 is located at an end of the elastic buckling member 12 away from the rotating member 13.

As shown in fig. 4, the abutting portion 122 and the hooking portion 123 are located at the free end of the elastic catch 12. The abutting portion 122 is disposed in the accommodating cavity 111 and connected to the fixing portion 121, and the abutting portion 122 can abut against the protrusion 14 to restrict the rotation of the protrusion 14. Specifically, the abutting portion 122 is located at one end of the elastic locking piece 12 close to the rotating member 13, and may be integrally formed with the fixing portion 121. It should be noted that interference means contact between two members and the existence of an interaction force. For example, in the state of the lock release device 10 shown in fig. 4, the abutting portion 122 is only in contact with the projection 14; in the unlocking apparatus 10 in the state shown in fig. 5, the abutting portion 122 and the projection 14 are not only in contact but also have an interaction force.

In addition, the fixing portion 121 and the abutting portion 122 of the elastic buckling piece 12 are both disposed in the accommodating cavity 111 of the housing 11, on one hand, the influence on the aesthetic property of the unlocking device 10 due to the exposure of the elastic buckling piece 12 to the outside of the housing 11 can be significantly improved, so that the appearance of the unlocking device 10 looks simpler; on the other hand, the risk that the structure is deformed and damaged due to the fact that the elastic buckling piece 12 is arranged outside the shell 11 and is easily impacted or collided can be effectively reduced, and the unlocking device 10 is prevented from being out of function.

As shown in fig. 5, the hook 123 is fixedly connected to the abutting portion 122 and can penetrate through the through hole 112 formed in the housing 11, and the through hole 112 is formed in the first direction. Note that the first direction is a direction in which the bump 14 applies a force to the contact portion 122 (upward direction as shown in fig. 5). Specifically, the hook portion 123 and the abutting portion 122 may be welded or integrally formed, and the hook portion 123 extends in a direction opposite to the first direction (downward direction as shown in fig. 5). The shape and structure of the hook 123 are arbitrary, and for example, the hook may be a sheet-like insertion piece structure as shown in fig. 6a, or a cylindrical plug structure as shown in fig. 6 b. The number of the hook portions 123 is arbitrary, and may be one or plural, and a plurality of hook portions 123 may be used to improve the reliability of connection. The position of the hook 123 may be set at a substantially middle position of the elastic grommet 12 in the longitudinal direction, or may be set at a position near the free end of the elastic grommet 12. In view of component cost and a compact design, in an exemplary embodiment, the hook portion 123 is a two-tab structure as shown in fig. 3, disposed at an outer edge of the abutment portion 122.

As shown in fig. 5, the shape, structure and position of the through hole 112 may be determined according to the specific structural form of the hook portion 123, the through hole 112 penetrates through the wall surface of the housing 11, the length of the through hole 112 is greater than the length of the hook portion 123, and the width of the through hole 112 is greater than the width of the hook portion 123, so that the hook portion 123 can pass through the through hole 112 and move relative to the through hole 112. In the process that the abutting part 122 of the elastic buckling piece 12 moves in the direction opposite to the first direction, the buckling part 123 can be driven to move along the direction opposite to the first direction to penetrate through the through hole 112 so as to protrude out of the shell 11, and then the buckling part 123 extending out of the shell 11 extends into a slot of a case wall surface adjacent to the unlocking device 10, so that the unlocking device 10 and the case are locked; in the process that the abutting portion 122 of the elastic buckling piece 12 moves along the first direction, the buckling portion 123 can be driven to move along the first direction along with the abutting portion, so that the buckling portion 123 is separated from the slot of the chassis, and therefore the unlocking of the unlocking device 10 and the chassis is achieved.

The operation of the unlocking device 10 is specifically explained as follows:

as shown in fig. 4, the unlocking device 10 is in an initial state, i.e., a locked state, in which the abutting portion 122 is in contact with the protrusion 14, i.e., the protrusion 14 has no mutual acting force on the abutting portion 122, so that the abutting portion 122 does not displace, i.e., the abutting portion 122 is stationary relative to the housing 11. When the protruding block 14 rotates to abut against the abutting portion 122, the protruding block 14 abuts against the abutting portion 122 to drive the hook portion 123 to move in the first direction to separate from the through hole 112. Specifically, in the process of rotating the protrusion 14 from the initial state shown in fig. 4 to the state shown in fig. 5 (clockwise rotation), the protrusion 14 can apply an acting force in the first direction (upward direction shown in fig. 5) to the abutting portion 122, and as the acting force continuously increases, the abutting portion 122 moves in the first direction (upward), and drives the hook portion 123 to move in the first direction, so that the hook portion 123 gradually disengages from the through hole 112, thereby unlocking the unlocking device 10 and an adjacent chassis or other devices, and completing the switching process from the locked state to the unlocked state.

As shown in fig. 5, the unlocking state of the unlocking device 10 is shown, in which the abutting portion 122 abuts against the projection 14, that is, the projection 14 exerts a force on the abutting portion 122. When the protrusion 14 rotates to the state of releasing the abutting portion 122, the abutting portion 122 drives the hook portion 123 to move in the direction opposite to the first direction to penetrate through the through hole 112. Specifically, in the process that the bump 14 rotates from the unlocking state shown in fig. 5 to the state shown in fig. 4 (counterclockwise rotation), as the acting force of the bump 14 on the abutting portion 122 gradually decreases to disappear, the abutting portion 122 moves in the direction opposite to the first direction, and drives the hook portion 123 to move in the direction opposite to the first direction (downward), so that the hook portion 123 penetrates through the through hole 112 to protrude out of the housing 11, and the hook portion 123 protruding out of the housing 11 can extend into the slot of the chassis or other equipment adjacent to the unlocking device 10, so that the connection between the unlocking device 10 and the chassis or other equipment is realized, that is, the switching process from the unlocking state to the locking state is completed.

The utility model discloses an unlocking device includes the casing, rotates piece and elasticity buckle spare, and wherein, the fixed part and the butt portion of elasticity buckle spare all set up in the intracavity that holds of casing, and the through-hole that the casing was seted up can be run through to the hook portion of elasticity buckle spare. The protruding block is arranged on the rotating part in a protruding mode in the circumferential direction, the protruding block can be abutted to the abutting part to drive the clamping hook part of the elastic clamping piece to move so as to be separated from the through hole, and the protruding block can also be abutted to the abutting part to be released so as to drive the clamping hook part to move so as to penetrate through the through hole. The utility model can realize the unlocking and locking of the unlocking device by rotating the rotating piece, and has simple and ingenious structural design and flexible and convenient operation; and the fixing part and the abutting part of the elastic buckle piece are arranged in the accommodating cavity, so that the safety reliability and the attractiveness of the unlocking device can be effectively improved.

In some embodiments, as shown in fig. 4, the radius of curvature of the wall surface of the projection 14 adjacent to the abutting portion 122 gradually increases from one end to the other end and then gradually decreases in the rotation direction of the rotation member 13. Specifically, the curvature is the inverse of the radius of curvature, and it is understood that the smaller the curvature, the less the wall is curved, i.e., relatively flat, and conversely, the larger the curvature, the more the wall is curved, i.e., more curved and curled. As shown in fig. 7, the curvature of the wall surface of the bump 14 near both ends is larger, and the curvature of the wall surface of the bump 14 in the substantially middle area is smaller, so that the distance from the wall surface of the bump 14 near both ends to the central axis of the base 132 is smaller, and the distance from the wall surface of the middle area of the bump 14 to the central axis of the base 132 is larger, i.e., L2 < L1, L3 < L1 shown in fig. 7.

As shown in fig. 4, the abutting portion 122 is in contact with the wall surface of the middle region of the bump 14, and in this state, the two members are only in contact with each other and there is no interaction force. When the rotating member 13 rotates clockwise as shown in fig. 4, the abutting portion 122 can slide along the wall surface of the protruding block 14, and as the distance between the wall surface of the protruding block 14 contacting the abutting portion 122 and the central axis is smaller and smaller, the protruding block 14 generates an acting force along the first direction to the abutting portion 122, so as to push the abutting portion 122 to move along the first direction, and further drive the hook portion 123 to move along the first direction. When the rotating member 13 is rotated to the state shown in fig. 5, that is, the abutting portion 122 is in contact with the wall surface having the largest curvature of the projection 14, accordingly, the abutting portion 122 also reaches the maximum displacement value in the first direction, so that the hook portion 123 is completely disengaged from the through hole 112 of the housing 11, and the unlocking of the unlocking device 10 is realized. When the rotating member 13 starts to rotate counterclockwise from the state shown in fig. 5, in the rotating process, as the distance between the wall surface of the protruding block 14 contacting the abutting portion 122 and the central axis is larger, the acting force of the protruding block 14 on the abutting portion 122 is gradually reduced, so that the abutting portion 122 can move in the direction opposite to the first direction, and the hook portion 123 is driven to move in the direction opposite to the first direction, and more portions of the hook portion 123 pass through the through hole 112 and protrude out of the housing 11. When the rotating member 13 rotates to the state shown in fig. 4, the acting force of the protrusion 14 on the abutting portion 122 disappears, the abutting portion 122 returns to the initial state, the length of the portion of the hook portion 123 protruding from the housing 11 also reaches the maximum value, and the unlocking device 10 is locked.

As shown in fig. 3, the curvature of the wall surface of the abutting portion 122 adjacent to the bump 14 is a fixed value. Specifically, the contact surface of the abutting portion 122 and the bump 14 may be an arc surface, so as to effectively reduce the friction force between the abutting portion and the wall surface of the bump 14 during the sliding process. Moreover, the curvature of the arc surface of the abutting portion 122 is not changed, if the curvature is changed, in the sliding process, the wall surface with the large curvature of the abutting portion 122 is matched with the wall surface with the small curvature of the bump 14, so that the bump 14 cannot push the abutting portion 122 to move, and unlocking is affected. The fixed curvature of the abutment 122 may be effective to avoid unlocking failures.

The wall surface of the contact between the convex block and the abutting part is set to be a structure with large curvatures at two ends and small curvature in the middle, the curvature change of the wall surface of the convex block is utilized to push the abutting part to move, and then the hook part is driven to move, so that the unlocking and the locking of the unlocking device are realized. The design is flexible and ingenious, and the components are simple in structure and low in cost.

In some embodiments, as shown in fig. 3 and 7, the walls of the protrusion 14 and abutment 122 adjacent to each other are both smoothly curved. Specifically, the curvatures of the wall surfaces of the bump 14 and the abutting part 122 are smoothly transited, so that the friction force between the contact surfaces of the two components is reduced, and the abrasion between the components is effectively reduced.

In some embodiments, as shown in fig. 8, the housing 11 is provided with a sliding slot 113 communicating with the accommodating cavity 111, the protrusion 14 rotates in the sliding slot 113, and the length of the sliding slot 113 is greater than the length of the protrusion 14 along the rotating direction. Specifically, the sliding slot 113 is a substantially arc-shaped slot, the length of the sliding slot 113 refers to the maximum arc length of the sliding slot 113, the length of the protrusion 14 refers to the maximum arc length of the protrusion 14, and the maximum arc length of the sliding slot 113 is greater than the maximum arc length of the protrusion 14, so that the protrusion 14 can slide in the sliding slot 113 within a certain range.

As shown in fig. 8, the sliding groove 113 has two end surfaces, and can control the rotation range of the protrusion 14, i.e., limit the movement of the protrusion 14. Specifically, one end face can limit the bump 14 in the locked state, and when the bump 14 rotates counterclockwise to return to the locked state shown in fig. 4, the right end portion of the bump 14 can abut against the right end face of the sliding groove 113, so as to prevent the bump 14 from continuing to rotate counterclockwise. Because the curvature of the wall surface of the projection 14 near the left end is greater than the curvature of the middle area of the projection 14, if the counterclockwise rotation is continued, the abutting portion 122 will be lifted by the acting force exerted by the wall surface of the projection 14 near the left end, and further the hook portion 123 will be lifted, which may cause the hook portion 123 to be separated from the slot of the chassis, thereby disabling the locking process; by the abutment of the right end face of the sliding groove 113 and the projection 14, the projection 14 is prevented from continuing to rotate counterclockwise, and therefore failure of the locking process is avoided. Alternatively, when the right end of the projection 14 abuts against the right end face of the chute 113, the abutting portion 122 abuts against the minimum curvature wall face of the projection 14. The other end face opposite to the sliding groove 113, that is, the end face on the left side shown in fig. 5, can limit the protruding block 14 in the unlocked state, and when the protruding block 14 rotates clockwise to the unlocked state shown in fig. 5, the left end portion of the protruding block 14 can abut against the end face on the left side of the sliding groove 113, so as to prevent the protruding block 14 from continuing to rotate clockwise. Because the abutting part 122 in the unlocking state is approximately positioned at the right end part of the bump 14, if the clockwise rotation is continued, the abutting part 122 can slide out of the wall surface of the bump 14 and is separated from the bump 14, so that the abutting part 122 in the unlocking state is restored to the locking state, and the hook part 123 separated from the slot of the chassis originally returns to the slot again, thereby causing the failure of the unlocking process; by the abutting of the left end surface of the sliding groove 113 and the projection 14, the projection 14 is prevented from continuously rotating clockwise, and therefore failure in the unlocking process is avoided. Alternatively, when the left end of the projection abuts against the left end face of the chute 113, the abutting portion 122 abuts against the wall face of the projection 14 having the largest curvature near the right side.

Through seting up the spout on the casing, two terminal surfaces of spout can be spacing the locking process and the unblock process of lug respectively, prevent unlocking device's functional failure.

In some embodiments, as shown in fig. 4 and 5, the unlocking device further includes a restoring member 15, one end of the restoring member 15 is fixed to the rotating member 13, and the other end of the restoring member 15 is fixed to the housing 11. Specifically, the restoring member 15 is a member that is elastically deformed by an external force, and is restored to an initial state after the external force is removed. The restoring member 15 may be an elastic element such as a torsion spring, a tension spring, a compression spring, a coil spring, or a rubber cushion. In the exemplary embodiment, the return element 15 is a tension spring, which will be described further below. The return element 15 may be fixedly connected to the cam 14 of the rotation element 13 at one end and to the housing 11 at the other end. The return element 15 deforms as the cam 14 rotates. Thereby generating a restoring force which can restore the restoring piece 15 from the deformed state to the original state and drive the bump 14 to the original state under the condition that the steering force applied by the outside is removed. Through setting up the reply piece, make unlocking device can resume to initial condition rapidly after the unblock, need not user manual operation again for unlocking device operates convenient and fast more.

In some embodiments, as shown in fig. 4 and 5, when the restoring member 15 is in the natural state, the protrusion 14 does not interfere with the abutting portion 122; when the protrusion 14 and the abutting portion 122 are in an abutting state, the restoring force of the restoring member 15 is the maximum. The natural state refers to a state in which the restoring member 15 is not deformed. Specifically, in the locked state shown in fig. 4, the restoring member 15 is not subjected to an external force and does not deform. In the process that the protruding block 14 rotates in the unlocking direction, the restoring member 15 deforms along with the continuous rotation of the protruding block 14, and generates a restoring force, and when the protruding block 14 rotates to abut against the wall surface at one end of the sliding groove 113, the deformation of the restoring member 15 is the largest, that is, the restoring force is the largest. Since the restoring force is opposite to the rotation direction of the cam 14 during the unlocking process, the cam 14 can be rapidly rotated in the locking direction by the restoring force after the unlocking process is completed, so that the rotation member 13 is restored to the initial position.

In some embodiments, as shown in fig. 9, the rotation member 13 further includes a handle 131, and the handle 131 is fixedly connected to the protrusion 14 and is away from the receiving cavity 111 relative to the protrusion 14 when the steering force is applied. Specifically, the handle 131 may be a semi-annular hand piece, fixedly connected to the base 132, and protruding out of the housing 11. The unlocking process can be completed by rotating the handle 131 in the unlocking direction, and after the unlocking device 10 is unlocked from the case, the unlocking device 10 can be moved by pulling the handle 131 along the central axis, so that the unlocking device 10 is separated from the case. Through set up the handle on rotating the piece, the user of being convenient for applys the effort and unlocks, also the convenience of customers moves the unlocking device after accomplishing the unblock simultaneously.

In some embodiments, as shown in fig. 1, the unlocking device 10 further includes a panel 16, the panel 16 is disposed between the housing 11 and the rotating member 13, the panel 16 is fixedly connected to the housing 11, and the panel 16 is rotatably connected to the rotating member 13. Specifically, the panel 16 has an opening, an inner wall surface of the opening is provided with an internal thread, and an outer wall surface of the base 132 of the rotation member 13 in the circumferential direction is also provided with an external thread adapted to the internal thread, so as to be connected to the panel 16. The panel 16 is also provided with a locking and unlocking direction mark, so that a user can conveniently identify the unlocking direction, and the unlocking process is simplified. The panel 16 can cover the hollow part of the end face of the housing 11 connected to the rotating member 13, so as to prevent dust or liquid from falling in, and protect the parts of the end face of the joint.

In some embodiments, as shown in fig. 7, the thickness of the bump 14 gradually decreases and then gradually increases in the rotational direction. Note that the thickness refers to a distance between two end faces of the bump 14 facing each other in the radial direction. Specifically, the curvature of the wall surface of the bump 14 near the end is large, and during unlocking, the wall surface in this region receives a reaction force from the abutting portion 122 against the wall surface of the bump 14 while applying a force to the abutting portion 122, and during rotation, as the abutting portion 122 comes closer to the end of the bump 14, the force applied to the abutting portion 122 by the bump 14 gradually increases, and at the same time, the reaction force received by the wall surface of the bump 14 from the abutting portion 122 also gradually increases. In order to prevent both ends of the bump 14 from being broken due to a large reaction force from the abutting portion 122, the rigidity and strength of the end portion of the bump 14 can be increased by increasing the thickness of both end portions of the bump 14. While the abutment 122 does not interfere with the middle region of the bump 14, i.e. the middle region of the bump 14 is not subjected to a reaction force from the abutment 122, this part of the region does not need to be thickened. Thus, the bump 14 as a whole exhibits a thin thickness in the middle region and a thick thickness in the regions near the two ends.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (10)

1. An unlocking device, comprising:

the shell (11), the shell (11) encloses and forms a containing cavity (111);

a rotating member (13), wherein the rotating member (13) is rotatably connected with the shell (11), and the rotating member (13) comprises a lug (14) positioned in the accommodating cavity (111);

elastic snap-in (12) comprising:

the fixing part (121) is arranged in the accommodating cavity (111) and is fixedly connected with the shell (11);

an abutting part (122) arranged in the accommodating cavity (111) and connected with the fixing part (121), wherein the abutting part (122) can be abutted against the lug (14) to limit the rotation of the lug (14);

the hook part (123) is fixedly connected with the abutting part (122) and can penetrate through a through hole (112) formed in the shell (11), and the through hole (112) is formed in the first direction;

when the lug (14) rotates to be in contact with the abutting part (122), the lug (14) presses against the abutting part (122) to drive the hook part (123) to move towards the first direction to be separated from the through hole (112); when the lug (14) rotates to the state of releasing the interference with the abutting part (122), the abutting part (122) drives the hook part (123) to move in the direction opposite to the first direction to penetrate through the through hole (112).

2. The lock release device according to claim 1, wherein, in the rotational direction of the rotating member (13), the radius of curvature of the wall surface of the projection (14) adjacent to the abutment portion (122) gradually increases from one end to the other end and then gradually decreases, and the curvature of the wall surface of the abutment portion (122) adjacent to the projection (14) is a fixed value.

3. The unlocking device according to claim 1 or 2, characterized in that the wall surfaces of the projection (14) and the abutment (122) adjacent to each other are both smoothly curved.

4. The unlocking device according to claim 1 or 2, wherein a sliding groove (113) communicating with the accommodating cavity (111) is formed in the housing (11), the projection (14) rotates in the sliding groove (113), and the length of the sliding groove (113) is greater than that of the projection (14) along the rotating direction.

5. An unlocking device as claimed in claim 4, characterized in that it further comprises a return member (15), one end of said return member (15) being fixed to said rotary member (13) and the other end of said return member (15) being fixed to said casing (11).

6. An unlocking device as claimed in claim 5, characterized in that, when said return member (15) is in the natural condition, said cam (14) does not interfere with said abutment (122); when the projection (14) and the abutting part (122) are in an abutting state, the restoring force of the restoring piece (15) is maximum.

7. The unlocking apparatus according to claim 1 or 2, wherein the rotating member further comprises:

a handle (131) applying a steering force, the handle (131) being fixedly connected to the projection (14) and being remote from the receiving cavity (111) relative to the projection (14).

8. An unlocking device as claimed in claim 7, characterized in that the unlocking device further comprises a face plate (16), the face plate (16) being arranged between the housing (11) and the rotary member (13), the face plate (16) being fixedly connected to the housing (11), the face plate (16) being rotatably connected to the rotary member (13).

9. Unlocking device according to claim 1 or 2, characterized in that the thickness of the projection (14) in the direction of rotation is first gradually reduced and then gradually increased.

10. A fan module, characterized in that it comprises a fan mounted in the housing (111) and coaxial with the rotary member (13), and an unlocking device according to any one of claims 1 to 9.

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