CN210213329U - Shaft connecting mechanism and access box - Google Patents

Abstract

The utility model relates to an axle coupling mechanism and access case. Wherein, shaft coupling mechanism includes: a support member; a first shaft connected with the support; a first link connected to the first shaft and configured to be rotatable relative to the support about an axis of the first shaft; the second shaft is sleeved outside the first shaft and is connected with the supporting piece; a second connector coupled to the second shaft and configured to be rotatable relative to the support about an axis of the second shaft; a first damping assembly configured to provide a damping force to relative movement between the first link and the support; and a second damping assembly configured to provide a damping force to relative movement between the second link and the support. The utility model provides a collision or the problem of vibrations that undamped produced to a plurality of parts receive same damping force simultaneously, do not need under the condition of damping force even, also receive the problem of damping force.

Description

Shaft connecting mechanism and access box

Technical Field

The utility model relates to a transmission damping mechanism especially relates to an axle coupling mechanism and access case.

Background

In the related art, the pivot shaft or the part connected with the pivot shaft is not provided with damping, so that the part can rotate rapidly to generate collision or vibration; or after the damping is arranged, continuous damping torsion is generated, so that a plurality of parts connected with the pivot shaft are simultaneously subjected to the same damping force, and even under the condition that the damping force is not needed, the parts are also subjected to the damping force.

SUMMERY OF THE UTILITY MODEL

One of the purposes of the utility model is to provide an axle coupling mechanism and access case for solve the unanimous problem of damping force that receives with a plurality of parts of same hub connection.

Some embodiments of the utility model provide an axle coupling mechanism, it includes:

a support member;

a first shaft connected with the support;

a first link connected to the first shaft and configured to be rotatable relative to the support about an axis of the first shaft;

the second shaft is sleeved outside the first shaft and is connected with the supporting piece;

a second connector coupled to the second shaft and configured to be rotatable relative to the support about an axis of the second shaft;

a first damping assembly configured to provide a damping force to relative movement between the first link and the support; and

a second damping assembly configured to provide a damping force to relative movement between the second link and the support.

In some embodiments, the support member is provided with a through hole, the first shaft passes through the through hole, and the first connecting member and the second connecting member are respectively located on the first side and the second side of the support member along the axial extension direction of the first shaft.

In some embodiments, the first damping assembly comprises:

the first elastic piece is arranged on the first shaft;

the first rotating piece is fixedly arranged on the first connecting piece; and

the first fixing piece is fixedly arranged on the first side of the supporting piece;

and a friction pair loaded by the first elastic piece is formed between the first rotating piece and the first fixed piece.

In some embodiments, one of the first rotating plate and the first fixing plate is provided with a first projection, and the other of the first rotating plate and the first fixing plate is provided with a first sliding groove;

the first rotating piece is configured to rotate with the first connecting piece, so that the first lug is in the first sliding groove in a first rotating stroke; in a second rotation stroke, the first protruding block is arranged outside the first sliding groove, so that acting force deviating from each other is generated between the first rotating piece and the first fixing piece, and the first rotating piece and the first fixing piece are matched with the first elastic piece to generate damping force for relative movement between the first connecting piece and the supporting piece.

In some embodiments, a length of the first sliding groove is greater than a length of the first projection along a rotation direction of the first connecting member, so that the first projection slides in the first sliding groove during the first rotation stroke.

In some embodiments, the other of the first rotating plate and the first fixing plate is further provided with a first limiting groove at the end position of the second rotating stroke, so that at the end of the second rotating stroke, the first bump enters the first limiting groove.

In some embodiments, the first damping assembly includes a first nut disposed at an end of the first shaft on the second side of the support member and pressing against the first elastic member.

In some embodiments, the second damping assembly comprises:

the second elastic piece is arranged on the second shaft;

the second rotating sheet is fixedly arranged on the second connecting piece; and

the second fixing piece is fixedly arranged on the second side of the supporting piece;

and a friction pair loaded by the second elastic piece is formed between the second rotating piece and the second fixed piece.

In some embodiments, one of the second rotating sheet and the second fixing sheet is provided with a second projection, and the other of the second rotating sheet and the second fixing sheet is provided with a second sliding groove;

the second rotating piece is configured to rotate with the second connecting piece so as to enable the second lug to be in the second sliding groove in a third rotating stroke, and the second lug is arranged outside the second sliding groove in a fourth rotating stroke, so that acting force deviating from each other is generated between the second rotating piece and the second fixing piece, and the second rotating piece is matched with the second elastic piece to generate damping force for relative movement between the second connecting piece and the supporting piece.

In some embodiments, a length of the second sliding slot is greater than a length of the second projection in a rotational direction of the second link, such that the second projection slides within the second sliding slot during the third rotational stroke.

In some embodiments, the other of the second rotating sheet and the second fixing sheet is further provided with a second limiting groove at the end position of the fourth rotating stroke, so that at the end of the fourth rotating stroke, the second bump enters the second limiting groove.

In some embodiments, the second damping assembly includes a second nut disposed at an end of the second shaft away from the support member and pressing against the second elastic member.

In some embodiments, the access box comprises:

the spacer bush is arranged on the first shaft or the second shaft; and

and the third connecting piece is rotatably arranged on the spacer bush.

In some embodiments, the axes of the first and second shafts are coincident or parallel.

Some embodiments of the utility model provide an access case, it includes:

the above-described embodiments provide a shaft connecting mechanism,

a box body; and

the door plate is rotatably connected to the box body through the shaft connecting mechanism;

the support piece of the shaft connecting mechanism and the side wall of the box body are integrally arranged, and the first connecting piece of the shaft connecting mechanism is connected with the door plate.

In some embodiments, the rotational stroke of the door panel relative to the housing includes a first rotational stroke and a second rotational stroke, and the first damping assembly provides a damping force at the first rotational stroke that is less than a damping force at the second rotational stroke;

the first rotation stroke is a process from a closed state to a state that the door plate and the box body are unfolded to a preset angle relative to the box body;

the second rotation stroke is a process from the door panel being unfolded to a preset angle relative to the cabinet to being fully opened.

In some embodiments, the access box comprises:

the protective cover is used for covering the articles in the box body; and

the first support is connected with the second connecting piece of the shaft connecting mechanism so as to rotate relative to the box body, and the first support is connected with the protective cover.

In some embodiments, the shaft connecting mechanism comprises:

the spacer bush is arranged on the first shaft or the second shaft; and

the third connecting piece is rotatably arranged on the spacer bush;

the access box includes: and the second bracket is connected with the third connecting piece so as to rotate relative to the box body, and the second bracket is connected with and supports the protective cover.

Based on the technical scheme, the utility model discloses following beneficial effect has at least:

in some embodiments, the first connector is connected to a first shaft, the second connector is connected to a second shaft, the second shaft is sleeved outside the first shaft, and the first damping assembly is configured to provide a damping force for relative movement between the first connector and the support; the second damping assembly is configured to provide a damping force to relative movement between the second link and the support; the first damping assembly and the second damping assembly are configured to provide damping forces at different times and to provide damping forces of different magnitudes; namely: the first connecting piece and the second connecting piece can bear damping force in different time periods and can bear different damping forces, the problem of collision or vibration caused by no damping is solved, and the problem that a plurality of parts simultaneously bear the same damping force and even bear the damping force under the condition that the damping force is not needed is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic view of a shaft connection mechanism according to some embodiments of the present invention;

fig. 2 is an exploded view of a shaft connection mechanism according to some embodiments of the present invention;

fig. 3 is an exploded view of a first damping assembly according to some embodiments of the present invention;

fig. 4 is a schematic view of a first damping fin according to some embodiments of the present invention;

fig. 5 is a schematic view of a second damping fin according to some embodiments of the present invention;

fig. 6 is a schematic view illustrating a combination state of the first damping fin and the second damping fin according to some embodiments of the present invention;

fig. 7 is an exploded view of a second damping assembly according to some embodiments of the present invention;

fig. 8 is a schematic cross-sectional view of a third connecting member according to some embodiments of the present invention;

fig. 9 is a schematic view of a closed state of an access box according to some embodiments of the present invention;

fig. 10 is a schematic view of an open state of an access box according to some embodiments of the present invention.

The reference numbers in the drawings:

1-a support; 2-a first axis; 3-a first connecting piece; 4-a second axis; 5-a second connector; 6-a third connector;

7-a first damping assembly; 71-a first elastic member; 72-a first rotor plate; 73-a first securing tab; 74-first bump; 75-a first runner; 76-a first nut; 77-a first limit groove;

8-a second damping assembly; 81-a first elastic member; 82-a first rotor plate; 83-a first securing tab; 84-a second nut;

9-spacer bush;

10-a box body; 20-a door panel; 30-a connecting rod; 40-a first support; 50-a second scaffold;

100-shaft connecting mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the invention.

As shown in fig. 1, the shaft connecting mechanism provided in some embodiments may provide damping force at different time intervals, may provide damping force with different magnitudes, and may be applied to the connection between a door panel and a box, between a door panel and a wall, or to other components that need to be rotatably connected.

As shown in fig. 2, in some embodiments, the shaft connecting mechanism includes a support 1, a first shaft 2, a first connector 3, a second shaft 4, a second connector 5, a first damping assembly 7, and a second damping assembly 8.

The supporting member 1 may be a box, a wall, or other members with a certain supporting or positioning function.

The first shaft 2 is connected to the support 1.

The first link 3 is connected to the first shaft 2 and is configured to be rotatable about the axis of the first shaft 2 relative to the support 1.

The second shaft 4 is sleeved outside the first shaft 2 and is connected with the support part 1.

The second link 5 is connected to the second shaft 4 and is configured to be rotatable about the axis of the second shaft 4 relative to the support 1.

The first damping assembly 7 is configured to provide a damping force to relative movement between the first link 3 and the support 1.

The second damping assembly 8 is configured to provide a damping force to relative movement between the second link 5 and the support 1.

The first damping assembly 7 and the second damping assembly 8 are configured to provide damping forces at different times and to provide damping forces of different magnitudes. Namely: the first connecting member 3 and the second connecting member 5 can bear damping forces at different time periods and can bear different damping forces.

In some embodiments, the first connecting member 3 and the second connecting member 5 are used for connecting different components, so that each component does not need to bear damping force at the same time, and each component can bear different damping force to adjust according to the requirements of different components, thereby avoiding the problem that the components collide or vibrate without the action of damping force, or the components are inflexible to move after bearing the same damping force, or the damping effect is poor.

In some embodiments, the support 1 is provided with a through hole through which the first shaft 2 passes, and the first connector 3 and the second connector 5 are respectively located on a first side and a second side of the support 1 in an axial extension direction of the first shaft 2.

Alternatively, the first shaft 2 is rotatably disposed on the supporting member 1, and the first connecting member 3 is fixedly disposed on the first shaft 2.

Alternatively, the first shaft 2 is fixedly arranged on the supporting member 1, and the first connecting member 3 is rotatably arranged on the first shaft 2.

As shown in fig. 3, in some embodiments, the first damping assembly 7 includes a first elastic member 71, a first rotating plate 72, and a first fixing plate 73.

The first elastic member 71 is provided on the first shaft 2. The first rotating piece 72 is fixedly arranged on the first connecting piece 3. The first fixing piece 73 is fixedly arranged at a first side of the supporting member 1. A friction pair loaded by the first elastic member 71 is formed between the first rotating piece 72 and the first fixing piece 73.

Optionally, the first elastic member 71 is provided at an end of the first shaft 2 located at the second side of the support member 1.

Optionally, as shown in fig. 4, a buckle is disposed on the first rotating sheet 72, a slot matched with the buckle is disposed on the first connecting member 3, and the first rotating sheet 72 is fixedly connected to the first connecting member 3 through the matching between the buckle and the slot.

Optionally, as shown in fig. 5, a buckle is disposed on the first fixing plate 73, a slot matched with the buckle is disposed on the support member 1, and the first fixing plate 73 is fixedly connected to the support member 1 through the matching between the buckle and the slot.

In some embodiments, one of the first rotating plate 72 and the first fixing plate 73 is provided with a first protrusion 74, and the other of the first rotating plate 72 and the first fixing plate 73 is provided with a first sliding slot 75.

The first rotating piece 72 is configured to rotate with the first connecting member 3, so that in a first rotating stroke, the first projection 74 is in the first sliding slot 75; in the second rotation stroke, the first protrusion 74 is outside the first sliding slot 75, so that a mutual deviating acting force is generated between the first rotating plate 72 and the first fixing plate 73 to cooperate with the first elastic member 71 to generate a damping force for the relative movement between the first connecting member 3 and the supporting member 1.

Optionally, the first rotating plate 72 and the first fixing plate 73 are damping plates.

In some embodiments, as shown in fig. 6, the length of the first sliding slot 75 is greater than the length of the first projection 74 in the rotation direction of the first link 3, so that the first projection 74 slides within the first sliding slot 75 during the first rotation stroke.

Namely: during the first rotation stroke, no force is generated between the first rotation piece 72 and the first fixing piece 73, and therefore no force is generated on the first elastic member 71.

In some embodiments, the other of the first rotating plate 72 and the first fixing plate 73 is further provided with a first limiting groove 77 at the end of the second rotating stroke, so that the first protrusion 74 enters the first limiting groove 77 at the end of the second rotating stroke.

In some embodiments, the first rotating plate 72 and the first fixing plate 73 are both circular, and have a through hole in the middle for passing through the first shaft 2.

As shown in fig. 4, two first protrusions 74 are disposed on the first rotating plate 72, and the two first protrusions 74 are located on the same diameter of the first rotating plate 72.

As shown in fig. 5, the first fixing plate 73 is provided with two first sliding grooves 75 and two first limiting grooves 77, and the two first sliding grooves 75 are located on the same diameter of the first rotating plate 72. The two first limiting grooves 77 are located on the same diameter of the first rotating piece 72. The connecting line of the first sliding groove 75 and the center of the circle is a first connecting line, the connecting line of the first limiting groove 77 and the center of the circle is a second connecting line, and the first connecting line is perpendicular to the second connecting line.

As shown in fig. 6, the arc a of the first slide slot 75 is greater than the arc b of the first projection 74 so that the first projection 74 slides within the first slide slot 75 during the first rotational stroke. The arc c of the first limiting groove 77 is equivalent to the arc b of the first protrusion 74. So that the first bump 74 enters the first limiting groove 77 at the end of the second rotation stroke, and the first limiting groove 77 limits the first bump 74.

In some embodiments, the first damping assembly 7 includes a first nut 76, and the first nut 76 is disposed at an end of the first shaft 2 on the second side of the supporting member 1 and presses against the first elastic member 71.

In some embodiments, the first end of the first shaft 2 is located on the first side of the supporting member 1, the second end sequentially passes through the first connecting member 3, the first rotating piece 72, the first fixing piece 73, the supporting member 1 and the second side of the supporting member 1, the first elastic member 71 is further disposed through the portion of the first shaft 2 located on the second side of the supporting member 1, and finally, the second end of the first shaft 2 is screwed and locked by the first nut 76.

In some embodiments, the first damping assembly 7 may also comprise a torsion spring connecting the first link 3 and the support 1, by which a damping force is generated for the relative movement between the first link 3 and the support 1.

In some embodiments, the first elastic member 71 includes a disc spring or a spring. Of course, the first shaft 2 may be provided with a washer or the like at a position where the disc spring is provided.

In some embodiments, the second damping assembly 8 includes a second elastic member 81, a second rotating piece 82, and a second fixing piece 83.

The second elastic member 81 is provided on the second shaft 4. The second rotating piece 82 is fixedly arranged on the second connecting piece 5. The second fixing piece 83 is fixedly arranged on the second side of the supporting piece 1. A friction pair loaded by the second elastic member 81 is formed between the second rotating piece 82 and the second fixing piece 83.

In some embodiments, the second shaft 4 has one end fixedly connected to the support 1 and the other end located at a second side of the support 1. Optionally, the support member 1 is provided with a flat hole, and a portion of the second shaft 4, which is matched with the flat hole on the support member 1, is provided with a flat shaft, so that the second shaft 4 is fixedly connected with the support member 1.

The second elastic member 81, the second rotating piece 82 and the second fixing piece 83 are located at a second side of the supporting member 1.

The second shaft 4 is sequentially inserted through the second fixed piece 83, the second rotating piece 82 and the second elastic piece 81.

In some embodiments, the second elastic member 81 includes a disc spring or a spring.

In some embodiments, one of the second rotating piece 82 and the second fixing piece 83 is provided with a second protrusion, and the other of the second rotating piece 82 and the second fixing piece 83 is provided with a second sliding slot.

The second rotating piece 82 is configured to rotate with the second connecting member 5, so that the second lug is in the second sliding slot in a third rotating stroke; in the fourth rotation stroke, the second protrusion is outside the second sliding slot, so that a mutual deviating acting force is generated between the second rotating piece 82 and the second fixing piece 83, and the second rotating piece cooperates with the second elastic piece 81 to generate a damping force for the relative movement between the second connecting piece 5 and the supporting piece.

In some embodiments, the length of the second runner is greater than the length of the second projection in the direction of rotation of the second link 5, so that the second projection slides within the second runner during the third rotational stroke.

Namely: during the third rotation stroke, no force is generated between the second rotation piece 82 and the second fixing piece 83, and therefore no force is generated on the second elastic member 81.

In some embodiments, the other of the second rotating plate 82 and the second fixing plate 83 is further provided with a second limiting groove at the end of the fourth rotating stroke, and at the end of the fourth rotating stroke, the second protrusion enters the second limiting groove.

The second fixing plate 83 is similar in structure to the first fixing plate 73. The second rotating piece 82 is similar in structure to the first rotating piece 72. The engagement of the second rotating piece 82 and the second fixing piece 83 is in accordance with the engagement principle of the first rotating piece 72 and the first fixing piece 73. The description will not be repeated.

In some embodiments, the second damping assembly 8 includes a second nut 84, and the second nut 84 is disposed at an end of the second shaft 4 far from the support 1 and presses against the second elastic member 81.

In some embodiments, the first end of the second shaft 4 is fixedly connected to the support 1, the second end is located at the second side of the support 1, and sequentially passes through the second fixing plate 83, the second rotating plate 82, the second connecting member 5 and the second elastic member 81, and finally, the second end of the second shaft 4 is screwed and locked by the second nut 84.

In some embodiments, the first shaft 2 is first sleeved with the second shaft 4, the second damping assembly 8, and then the first elastic member 71 and the first nut 76.

In some embodiments, the second damping assembly 8 may also comprise a torsion spring connecting the second link 5 and the support 1, by which a damping force is generated against relative movement between the second link 5 and the support 1.

In some embodiments, the shaft connecting mechanism further comprises a spacer 9 and a third connecting member 6. The spacer 9 is arranged on the first shaft 2 or the second shaft 4. The third connecting piece 6 is rotatably arranged on the spacer 9.

The third link 6 is not subjected to the damping forces generated by the first and second damping assemblies 7 and 8 and can be used to connect components that do not require damping.

In some embodiments, the three-part assembly of the first connecting member 3, the second connecting member 5 and the third connecting member 6 is mounted on a shaft and has functions independent of each other. The damping torsion is sectional type, mutually independent, each other does not influence.

The second protrusion of the second rotating plate 82 slides in the second sliding slot of the second fixing plate 83 to disengage the damping torque, and the second protrusion of the second rotating plate 82 disengages from the second sliding slot of the second fixing plate 83 to compress the second elastic member 81 to generate the damping torque.

The second elastic element 81, the second rotating sheet 82 and the second fixing sheet 83 are all arranged on the second shaft 4 in a penetrating mode and are a part of assemblies independent relative to the first damping assembly 7, and the first damping assembly 7 cannot be affected in the working process.

The third connecting piece 6 is arranged on the spacer sleeve, and is limited to freely rotate within a certain range by the disc spring and the gasket, so that the third connecting piece is free from damping torsion.

In some embodiments, the shaft connecting mechanism is not limited to the first connector 3, the second connector 5 and the third connector 6, and of course, is not limited to the first damping assembly 7 and the second damping assembly 8, and thus, more than two damping assemblies with different action times and different damping forces can be formed.

In some embodiments, the axes of the first shaft 2 and the second shaft 4 are coincident or parallel.

Some embodiments provide an access box that includes the shaft connection mechanism 100 of the above embodiments.

In some embodiments, the access box includes a housing 10 and a door panel 20. The door panel 20 is rotatably coupled to the cabinet 10 by a shaft coupling mechanism 100.

Wherein, the supporting member 1 of the shaft connecting mechanism 100 is integrally provided with the sidewall of the case 10, and the first connecting member 3 of the shaft connecting mechanism 100 is connected with the door panel 20.

Since the first connecting member 3 is connected to the first shaft 2 and is configured to be rotatable about the axis of the first shaft 2 relative to the support member 1. Thus, the door panel 20 can be rotated to be opened or closed with respect to the cabinet 10.

In some embodiments, the rotational stroke of the door panel 20 relative to the housing 10 includes a first rotational stroke and a second rotational stroke, and the first damping assembly 7 provides a damping force at the first rotational stroke that is less than a damping force at the second rotational stroke.

The first rotation stroke is a process from a closed state of the door panel 20 and the cabinet 10 to an open state to a preset angle with respect to the cabinet 10.

The preset angle may be an angle smaller than 5 degrees, 10 degrees, 20 degrees, 30 degrees, 40 degrees, or the like.

The second rotation stroke is a process of the door panel 20 from being unfolded to a preset angle with respect to the cabinet 10 to being completely opened.

The first and second rotational strokes of the door panel 20 with respect to the case 10 coincide with the first and second rotational strokes of the first link 3. In the first rotation stroke, the first projection 74 is in the first slide slot 75; in the second rotation stroke, the first protrusion 74 is outside the first sliding slot 75, so that a mutual deviating acting force is generated between the first rotating plate 72 and the first fixing plate 73 to cooperate with the first elastic member 71 to generate a damping force for the relative movement between the first connecting member 3 and the supporting member 1.

In some embodiments, the access box includes a motor lock. The top end of the door panel 20 is locked with the cabinet 10 by a motor lock.

When the motor lock is opened, the door panel 20 rotates relative to the box body 10 through the shaft connecting mechanism 100, the closed state is changed into the unfolded state, and the access box is opened.

That is, at the moment when the motor lock is opened, the door panel 20 and the cabinet 10 are unfolded from the closed state to the preset angle with respect to the cabinet 10, and the door panel 20 does not receive the damping force generated by the cooperation of the first rotating piece 72, the first fixing piece 73 and the first elastic piece 71. In the process that the door panel 20 is completely opened after being unfolded to a preset angle relative to the box body 10, the door panel 20 is subjected to the damping force generated by the cooperation of the first rotating sheet 72, the first fixing sheet 73 and the first elastic piece 71, and cannot fall and be opened rapidly, so that the vibration or collision is avoided, and the use safety is improved.

The radian of the first sliding slot 75 is greater than that of the first protrusion 74, so that the door panel 20 does not receive the damping force generated by the cooperation of the first rotating piece 72, the first fixing piece 73 and the first elastic piece 71 when the first protrusion 74 slides in the first sliding slot 75.

In some embodiments, the damping is not generated when the access box is opened, and the damping is generated when the door panel 10 continues to fall, so as to avoid the problem that the door panel 10 cannot be opened due to the damping torque force that needs to be overcome when the access box is opened.

In some embodiments, the access box comprises a link 30, and the door panel 20 is connected to the first connector 3 through the link 30.

In some embodiments, the access box includes a protective cover and a first support 40.

The protective cover is used for covering the articles in the box body 10. The first bracket 40 is attached to the protective cover. And the first bracket 40 is connected to the second connector 5 of the shaft connecting mechanism 100 to rotate with respect to the case 10 to open or close the protective cover.

In some embodiments, shaft coupling mechanism 100 includes spacer 9 and third connector 6. The spacer bush 9 is arranged on the first shaft 2 or the second shaft 4; the third connecting piece 6 is rotatably arranged on the spacer 9.

The access box includes a second bracket 50, and the second bracket 50 is connected to and supports the protection cover. The second bracket 50 is connected to the third link 6 to rotate with respect to the casing 10.

Since the third link 6 does not receive a damping force, the second bracket 50 supporting the protection cover does not receive a damping force.

After the access box is opened, namely the door plate 10 is opened at a certain angle and then starts to fall, the falling speed of the door plate and the protective cover is reduced by damping torsion, and the damping torsion received by the door plate and the protective cover does not influence each other. The second bracket 50 does not require damping during use. The second bracket 50 is connected with the third connecting piece 6, and the third connecting piece 6 is rotatably arranged on the spacer 9.

When the door panel 20 is in the closed state, the first protrusion 74 on the first rotating plate 72 is located in the first sliding slot 75 on the first fixing plate 73, and when the access box is opened, the damping torque force is not needed, the first rotating plate 72 can rotate freely within a certain angle, and the access box is not subjected to the damping torque force when in the open position.

When the first rotating plate 72 continues to rotate, the first protrusion 74 disengages from the first sliding slot 75 and presses the first fixing plate 73, thereby compressing the first elastic member 71 to generate a damping torque.

When the first rotating sheet 72 rotates 90 degrees, the first bump 74 just falls into the first limit groove 77 of the first fixing sheet 73, and at the moment, the door panel 10 is completely opened, so that the clear position prompt of an operator can be given, and the use quality of the product is improved.

In some embodiments, the storage box includes a pivot shaft, and the bottom end of the door panel 20 is also pivotally connected to the housing 10 via the pivot shaft.

In the description of the present invention, it should be understood that the terms "first", "second", "third", etc. are used to define the components, and are only used for the convenience of distinguishing the components, and if not stated otherwise, the terms have no special meaning, and thus, should not be construed as limiting the scope of the present invention.

Furthermore, the technical features of one embodiment may be combined with one or more other embodiments advantageously without explicit negatives.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims (18)

1. A shaft connecting mechanism, comprising:

a support (1);

a first shaft (2) connected to the support (1);

a first connection (3) connected to the first shaft (2) and configured to be rotatable relative to the support (1) about the axis of the first shaft (2);

the second shaft (4) is sleeved outside the first shaft (2) and is connected with the supporting piece (1);

a second connection (5) connected to the second shaft (4) and configured to be rotatable relative to the support (1) about the axis of the second shaft (4);

a first damping assembly (7) configured to provide a damping force to relative movement between the first connector (3) and the support (1); and

a second damping assembly (8) configured to provide a damping force to relative movement between the second connector (5) and the support (1).

2. A shaft connecting mechanism according to claim 1, characterized in that the support member (1) is provided with a through hole through which the first shaft (2) passes, and the first connecting member (3) and the second connecting member (5) are located on a first side and a second side of the support member (1), respectively, in the direction of extension of the axis of the first shaft (2).

3. A shaft connecting mechanism according to claim 2, characterized in that the first damping member (7) comprises:

a first elastic member (71) provided to the first shaft (2);

the first rotating piece (72) is fixedly arranged on the first connecting piece (3); and

the first fixing piece (73) is fixedly arranged on the first side of the supporting piece (1);

a friction pair loaded by the first elastic piece (71) is formed between the first rotating piece (72) and the first fixing piece (73).

4. A shaft connecting mechanism according to claim 3, wherein one of said first rotating piece (72) and said first fixing piece (73) is provided with a first projection (74), and the other of said first rotating piece (72) and said first fixing piece (73) is provided with a first sliding groove (75);

the first rotating piece (72) is configured to rotate with the first connecting piece (3) so that the first lug (74) is in the first sliding groove (75) in a first rotating stroke; in a second rotation stroke, the first lug (74) is arranged outside the first sliding groove (75), so that a mutual deviating acting force is generated between the first rotating sheet (72) and the first fixing sheet (73) to be matched with the first elastic piece (71) to generate a damping force for the relative movement between the first connecting piece (3) and the supporting piece (1).

5. A shaft connecting mechanism according to claim 4, characterized in that the length of the first sliding slot (75) in the direction of rotation of the first connecting piece (3) is greater than the length of the first cam (74), so that the first cam (74) slides within the first sliding slot (75) during the first rotational stroke.

6. The shaft connecting mechanism according to claim 4, wherein the other of the first rotating piece (72) and the first fixing piece (73) is further provided with a first limiting groove (77) at the end position of the second rotating stroke, so that the first projection (74) enters the first limiting groove (77) at the end of the second rotating stroke.

7. A shaft connecting mechanism according to claim 3, characterised in that said first damping member (7) comprises a first nut (76) arranged at the end of said first shaft (2) on the second side of said support (1) and pressing against said first elastic member (71).

8. A shaft connecting mechanism according to claim 2, characterized in that the second damping member (8) comprises:

a second elastic member (81) provided to the second shaft (4);

the second rotating piece (82) is fixedly arranged on the second connecting piece (5); and

the second fixing piece (83) is fixedly arranged on the second side of the supporting piece (1);

and a friction pair loaded by the second elastic piece (81) is formed between the second rotating piece (82) and the second fixed piece (83).

9. The shaft connecting mechanism according to claim 8, wherein one of the second rotating piece (82) and the second fixing piece (83) is provided with a second projection, and the other of the second rotating piece (82) and the second fixing piece (83) is provided with a second sliding groove;

the second rotating piece (82) is configured to rotate with the second connecting piece (5) so as to enable the second lug to be in the second sliding groove at a third rotating stroke, and the second lug is out of the second sliding groove at a fourth rotating stroke, so that acting force which deviates from each other is generated between the second rotating piece (82) and the second fixing piece (83) to be matched with the second elastic piece (81) to generate damping force for relative movement between the second connecting piece (5) and the supporting piece (1).

10. A shaft connecting mechanism according to claim 9, characterized in that the length of the second sliding slot is greater than the length of the second cam in the direction of rotation of the second connecting piece (5), so that the second cam slides in the second sliding slot during the third rotational stroke.

11. The shaft connecting mechanism according to claim 9, wherein the other of the second rotating piece (82) and the second fixing piece (83) is further provided with a second limiting groove at the end position of the fourth rotating stroke, so that the second projection enters the second limiting groove at the end of the fourth rotating stroke.

12. Shaft connection according to claim 8, characterized in that the second damping member (8) comprises a second nut (84) arranged at the end of the second shaft (4) remote from the support (1) and bearing against the second elastic member (81).

13. The shaft connecting mechanism according to claim 1,

comprises a spacer bush (9) arranged on the first shaft (2) or the second shaft (4); and

and the third connecting piece (6) is rotatably arranged on the spacer bush (9).

14. A shaft connection according to claim 1, characterized in that the axes of the first shaft (2) and the second shaft (4) coincide or are parallel.

15. An access box, comprising:

the shaft connecting mechanism (100) according to any one of claims 1 to 14,

a case (10); and

the door plate (20) is rotatably connected to the box body (10) through the shaft connecting mechanism (100);

the support piece (1) of the shaft connecting mechanism (100) and the side wall of the box body (10) are integrally arranged, and the first connecting piece (3) of the shaft connecting mechanism (100) is connected with the door panel (20).

16. The access box of claim 15, characterized in that the rotational stroke of the door panel (20) relative to the box body (10) comprises a first rotational stroke and a second rotational stroke, the first damping assembly (7) providing a damping force at the first rotational stroke that is less than a damping force at the second rotational stroke;

the first rotation stroke is a process from a closed state to a state that the door panel (20) and the box body (10) are unfolded to a preset angle relative to the box body (10);

the second rotation stroke is a process from the door panel (20) being unfolded to a preset angle relative to the box body (10) to being completely opened.

17. The access box of claim 15, comprising:

the protective cover is used for covering the articles in the box body (10); and

a first bracket (40) connected to the second link (5) of the shaft connecting mechanism (100) to rotate relative to the case (10), the first bracket (40) being connected to the protective cover.

18. An access box according to claim 17, characterised in that said shaft connection means (100) comprise:

the spacer bush (9) is arranged on the first shaft (2) or the second shaft (4); and

the third connecting piece (6) is rotatably arranged on the spacer bush (9);

the access box includes: a second bracket (50) connected to the third connecting member (6) to rotate relative to the case (10), the second bracket (50) being connected to and supporting the protective cover.

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