Wire harness storage box

Abstract

The present disclosure relates to the field of storage of electrical structures. Provided is a wire harness storage box capable of stepless retraction and extension. The wire harness storage box comprises: a box body, internally provided with an accommodation space for accommodating a wire harness; a winding member, located in the accommodation space and rotatably connected to the box body, an outer surface of the winding member being used for abutting against the wire harness, and the winding member rotating in a first direction so as to enable the wire harness to move into the accommodation space; a first elastic member, connected to the winding member and used for applying to the winding member a restoring force in the first direction; a friction member, used for applying a friction force to the winding member so as to limit the rotation of the winding member in the first direction; and an operating structure, connected to the friction member and used for enabling the friction member to move between a first position and a second position, wherein at the first position and the second position, the maximum static friction force that the friction member can apply to the winding member is a first value and a second value respectively.

Description

Wire harness storage box

[0001] Cross-reference to related applications

[0002] The present disclosure is based on Chinese Patent Application No. 202411000649.3, filed on July 24, 2024, entitled "Wire harness storage box with endless winding and unwinding", and Chinese Patent Application No. 202411000766.X, filed on July 24, 2024, entitled "Wire harness storage box preventing beating", and claims priority to both of the Chinese Patent Applications, the contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the field of storage of electrical structures, and in particular to a wire harness storage box. BACKGROUND

[0004] During use, electrical equipment needs to transmit or output energy through a wire harness. Due to the long length of the wire harness, a large space is occupied and the wire harness is prone to bending or knotting, so the middle part of the wire harness needs to be stored by a wire harness storage box. In the related art, the length of the wire harness is inconvenient to adjust during adjustment. SUMMARY

[0005] The present disclosure provides a wire harness storage box to solve the technical problem of how to adjust the length of the wire harness.

[0006] The present disclosure provides a wire harness storage box with endless winding and unwinding, which comprises a box body having an accommodation space inside for accommodating a wire harness; a winding member located in the accommodation space and rotatably connected with the box body, an outer surface of the winding member being used for abutting against the wire harness, the winding member being capable of moving the wire harness into the accommodation space by rotating in a first direction, the wire harness driving the winding member to rotate in a second direction during movement out of the accommodation space, the first direction being opposite to the second direction; a first elastic member connected with the winding member and used for applying a restoring force along the first direction to the winding member; a friction member used for applying a friction force to the winding member to limit rotation of the winding member in the first direction; and an operating structure connected with the friction member and used for moving the friction member between a first position and a second position, the maximum static friction force capable of being applied by the friction member to the winding member being a first value at the first position and a second value at the second position, respectively.

[0007] In some embodiments, the first value is greater than the restoring force, and the second value is less than the restoring force.

[0008] In some embodiments, the rolling member comprises: a rolling body having a friction wall and a bottom wall, the friction wall encircling the bottom wall, the friction wall being configured to abut against the wire harness; a friction portion protruding from the bottom wall, and the friction portion and the bottom wall enclosing a friction space, the friction portion forming a side wall of the friction space; wherein the friction member is located in the friction space and is capable of sliding relative to the side wall, and the friction member abuts against the side wall.

[0009] In some embodiments, at the first position, the friction member abuts against the side wall and abuts against the bottom wall, and at the second position, the friction member abuts against the side wall and is separated from the bottom wall.

[0010] In some embodiments, at the first position, the abutting force between the friction member and the side wall is a first abutting force, and at the second position, the abutting force between the friction member and the side wall is a second abutting force, the first abutting force being greater than the second abutting force.

[0011] In some embodiments, the first position and the second position are arranged in a depth direction of the friction space, at the first position, an area of a cross section of the friction space is a first area, and at the second position, an area of a cross section of the friction space is a second area, the first area being less than the second area, wherein the cross section is a plane perpendicular to the depth direction of the friction space.

[0012] In some embodiments, the first position and the second position are arranged in a third direction, the third direction being perpendicular to a depth direction of the friction space, at the first position, an area of a longitudinal section of the friction space is a third area, and at the second position, an area of a longitudinal section of the friction space is a fourth area, the third area being less than the fourth area, wherein the longitudinal section is a plane perpendicular to the first direction.

[0013] In some embodiments, at the first position, a friction coefficient between the side wall of the friction space and the friction member is a first coefficient, and at the second position, a friction coefficient between the side wall of the friction space and the friction member is a second coefficient, the first coefficient being greater than the second coefficient.

[0014] In some embodiments, the friction member is fixedly connected to the rolling member, the friction member is capable of relative movement with respect to the box body, and the friction member abuts against a side wall of the accommodation space; wherein at the first position, the abutting force between the friction member and the side wall of the accommodation space is a third abutting force, and at the second position, the abutting force between the friction member and the side wall of the accommodation space is a fourth abutting force, the third abutting force being greater than the fourth abutting force.

[0015] In some embodiments, the operation structure and the friction member are located on the same side of the winding member; or,

[0016] The operation structure and the friction member are located on opposite sides of the winding member.

[0017] In some embodiments, the operation structure is configured to control the friction force to be less than the restoring force, and the absolute value of the difference between the friction force and the restoring force to be less than a preset difference value, when the wire harness is being retracted, so that the wire harness retraction speed is less than a predetermined speed.

[0018] In some embodiments, the winding member comprises:

[0019] a winding body configured to abut against the wire harness;

[0020] a friction portion protruding from a bottom wall of the winding body and surrounding the bottom wall to form a friction space, the friction portion forming a side wall of the friction space;

[0021] wherein the friction member is located in the friction space and is capable of sliding relative to the side wall, the friction member abutting against the side wall, and the friction force between the friction member and the side wall decreases in a direction from the first position to the second position.

[0022] In some embodiments, the abutting force between the friction member and the side wall decreases from a first abutting force to a second abutting force during movement of the friction member from the first position to the second position.

[0023] In some embodiments, the first position and the second position are arranged in a depth direction of the friction space, and the cross-sectional area of the friction space increases from a first area to a second area in a direction from the first position to the second position, wherein the cross-sectional area is a plane perpendicular to the depth direction of the friction space.

[0024] In some embodiments, the first position and the second position are arranged in a third direction perpendicular to the depth direction of the friction space, and the longitudinal cross-sectional area of the friction space increases from a third area to a fourth area in a direction from the first position to the second position, wherein the longitudinal cross-sectional area is a plane perpendicular to the third direction.

[0025] In some embodiments, the friction coefficient between the friction member and the side wall decreases from a first coefficient to a second coefficient in a direction from the first position to the second position.

[0026] In some embodiments, the friction member is fixedly connected to the rolling member, and the friction member abuts against the side wall of the accommodating space and is capable of relative movement with respect to the box body;

[0027] The operation structure is configured to control movement of the friction member between a first position and a second position, and the friction force between the friction member and the side wall decreases during movement of the friction member from the first position to the second position.

[0028] In some embodiments, the first position and the second position are spaced apart in a depth direction of the accommodating space, and the cross-sectional area of the accommodating space increases in a direction from the first position to the second position, wherein the cross section is a plane perpendicular to the depth direction of the accommodating space.

[0029] In some embodiments, the first position and the second position are spaced apart in a fourth direction, and the longitudinal cross-sectional area of the accommodating space increases in a direction from the first position to the second position, wherein the longitudinal cross section is a plane perpendicular to the fourth direction, and the fourth direction is perpendicular to the depth direction of the accommodating space.

[0030] In some embodiments, the friction coefficient between the friction member and the side wall of the accommodating space decreases from a third coefficient to a fourth coefficient in a direction from the first position to the second position. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0032] FIG. 1 is an exploded view of a wire harness storage box according to an embodiment of the present disclosure;

[0033] FIG. 2 is a force analysis diagram of the rolling member and the wire harness of the wire harness storage box according to an embodiment of the present disclosure in a state of pulling out the wire harness;

[0034] FIG. 3 is a force analysis diagram of the rolling member and the wire harness of the wire harness storage box according to an embodiment of the present disclosure in a state of the user releasing the wire harness;

[0035] FIG. 4 is a force analysis diagram of the rolling member and the wire harness of the wire harness storage box according to an embodiment of the present disclosure in a state of the friction member being in the second position by the operation structure;

[0036] Fig. 5 is a structural schematic diagram of a first type of winding member in the wiring harness storage box according to an embodiment of the present disclosure;

[0037] Fig. 6 is a positional relationship diagram of the friction member and the winding member when the friction member is in a first position according to an embodiment of the present disclosure;

[0038] Fig. 7 is a positional relationship diagram of the friction member and the winding member when the friction member is in a second position according to an embodiment of the present disclosure;

[0039] Fig. 8 is a structural schematic diagram of a second type of winding member in the wiring harness storage box according to an embodiment of the present disclosure;

[0040] Fig. 9 is a structural schematic diagram of a third type of winding member in the wiring harness storage box according to an embodiment of the present disclosure;

[0041] Fig. 10 is a structural schematic diagram of a fourth type of winding member in the wiring harness storage box according to an embodiment of the present disclosure;

[0042] Fig. 11 is an assembly schematic diagram of a type of friction member, winding member and box body in the wiring harness storage box according to an embodiment of the present disclosure;

[0043] Fig. 12 is a structural schematic diagram of a first type of box body in the wiring harness storage box according to an embodiment of the present disclosure;

[0044] Fig. 13 is a structural schematic diagram of a second type of box body in the wiring harness storage box according to an embodiment of the present disclosure;

[0045] Fig. 14 is a structural schematic diagram of a third type of box body in the wiring harness storage box according to an embodiment of the present disclosure;

[0046] Fig. 15 is a relative positional relationship schematic diagram of a first type of winding member, friction member and operation structure in the wiring harness storage box according to an embodiment of the present disclosure;

[0047] Fig. 16 is a relative positional relationship schematic diagram of a second type of winding member, friction member and operation structure in the wiring harness storage box according to an embodiment of the present disclosure.

[0048] Legend 1, wiring harness storage box; 10, box body; 11, accommodation space; 20, winding member; 21, winding body; 211, friction wall; 212, bottom wall; 22, friction part; 23, friction space; 231, side wall; 232, top wall; 30, first elastic member; 40, friction member; 50, operation structure; 60, second elastic member. DETAILED DESCRIPTION

[0049] In order to make the purposes, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and not intended to limit the present disclosure.

[0050] In the specific embodiments, various specific technical features described can be combined in any suitable manner without contradiction, for example, different embodiments and technical solutions can be formed by combining different specific technical features. In order to avoid unnecessary repetition, various possible combinations of various specific technical features in the present disclosure are not described again.

[0051] In the following description, the terms "first", "second", and the like are merely used to distinguish different objects, and do not indicate that the objects have the same or related properties. It should be understood that the orientation description "upper", "lower", "outer", "inner" is the orientation in the normal use state, and the "left" and "right" directions represent the left and right directions shown in the specific corresponding schematic diagram, which can be the left and right directions in the normal use state or can not be.

[0052] It should be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or further includes elements inherent to such a process, method, article or apparatus. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article or apparatus including the element. The term "connected" includes direct connection unless otherwise specified.

[0053] In the following detailed description, the wire harness storage box can be used to store any type of wire harness, at least one end of the wire harness can be extended out of the wire harness storage box, and the length of the end of the wire harness extended out of the wire harness storage box can be adjusted, and the stored wire harness can be in a use state or a non-use state. For example, the wire harness storage box can be used to store a power cord in a use state. The connection end of the power cord for connecting with other electrical connections can be extended out of the wire harness storage box, and the length of the connection end of the power cord extended out of the wire harness storage box can be adjusted, so that the power cord can be connected with the electrical connections while reducing the space occupied by the power cord. For example, the wire harness storage box can also be used to store a data cable in a non-use state. After the data cable is unplugged, the middle part of the data cable can be stored in the wire harness storage box, both ends of the data cable are located outside the wire harness storage box, and the length of at least one end of the data cable extended out of the wire harness storage box can be adjusted. In this way, the space occupied by the data cable is reduced, and the end of the data cable can be directly inserted into a required data interface at any time through the length of the data cable extended out of the wire harness storage box, so that the data cable can be switched to a use state without being taken out of the wire harness storage box. For the convenience of description, the structure and use principle of the wire harness storage box will be exemplarily described below by taking the wire harness storage box used to store a data cable as an example.

[0054] In some embodiments, as shown in FIG. 1, the wire harness storage box 1 includes a box body 10, a winding member 20, a first elastic member 30, a friction member 40, and an operation structure 50. The box body 10 has an accommodation space 11 inside for accommodating a wire harness. The winding member 20 is located in the accommodation space 11 and is rotatably connected with the box body 10. The outer surface of the winding member 20 is used to abut against the wire harness 2. When the end of the wire harness 2 is pulled out of the accommodation space 11 and the length of the end extended out of the accommodation space 11 is increased, the winding member 20 will rotate in a second direction (the second direction is shown by the solid arrow in FIG. 1) under the action of the friction force applied by the wire harness. In the state that the winding member 20 rotates in a first direction (the first direction is shown by the dashed arrow in FIG. 1), the first direction is opposite to the second direction. The winding member 20 can rotate the wire harness in the first direction by applying a friction force to the wire harness, so that the part of the wire harness extended out of the accommodation space 11 is wound into the interior of the accommodation space 11.

[0055] The first elastic member 30 is connected with the winding member 20, and is used to apply a restoring force in the first direction to the winding member 20, so as to make the winding member 20 have a tendency to rotate in the first direction. Since the wire harness is of a soft structure, the tension can be transmitted to other parts of the wire harness by stretching the wire harness, so that the wire harness can be pulled out of the accommodation space 11. However, if a pushing force is applied to the wire harness, the wire harness will be elastically deformed, and it is difficult for the pushing force to be transmitted to other parts of the wire harness, so that it is difficult to push the wire harness into the accommodation space 11. By applying the first elastic member 30 to drive the winding member 20 to rotate in the first direction, the wire harness can be more smoothly pulled into the accommodation space 11. The first elastic member 30 can be connected with the box body 10.

[0056] The friction member 40 is used to apply a friction force to the winding member to limit the rotation of the winding member 20 in the first direction. It can be understood that, while the first elastic member 30 applies the restoring force in the first direction to the winding member 20, the friction member 40 limits the rotational movement of the winding member 20 in the first direction by applying the friction force to the winding member 20. In the state that the size of the restoring force does not exceed the maximum static friction that the friction member 40 can apply to the winding member 20, the static friction applied by the friction member 40 to the winding member 20 is equal in size and opposite in direction to the restoring force, so that the winding member 20 is in a state of static equilibrium. It should be noted that the friction member 40 can also limit the rotation of the winding member 20 in the second direction. In the state that the length of the wire harness extending out of the accommodation space 11 has a tendency to be elongated due to accidental external force disturbance, the friction force applied by the friction member 40 to the winding member 20 and the restoring force applied by the first elastic member 30 to the winding member 20 can limit the rotation of the winding member 20 in the second direction, thereby reducing the possibility that the length of the wire harness extending out of the accommodation space 11 changes under the action of accidental external force disturbance. However, if the user indeed needs to make more wire harnesses extend out of the accommodation space 11, the pulling force applied by the user is always large enough, which is greater than the combined force of the maximum static friction that the friction member 40 can apply to the winding member 20 and the restoring force that the first elastic member 30 applies to the winding member 20, so that the winding member 20 can rotate relative to the friction member 40 in the second direction, and the length of the wire harness extending out of the accommodation space 11 is longer.

[0057] The operation structure 50 is connected with the friction member 40, and can be used to move the friction member 40 between the first position and the second position. In the first position and the second position, the maximum static friction that the friction member 40 can apply to the winding member 20 is respectively a first value and a second value. In the first position, the maximum static friction that the friction member 40 can apply to the winding member 20 is the first value; in the second position, the maximum static friction that the friction member 40 can apply to the winding member 20 is the second value. The first value can be greater than the restoring force, and the second value can be less than the restoring force. The first value can also be less than or equal to the restoring force.

[0058] The operation structure 50 is connected with the friction member 40, and can be used to control the friction force to be less than the restoring force when the wire harness is recovered, and control the absolute value of the difference between the friction force and the restoring force to be less than a preset difference value, so that the wire recovery speed is less than a predetermined speed. As an example, the operation structure 50 is used to move the friction member 40 between the first position and the second position. During the movement of the friction member 40 from the first position to the second position, the maximum static friction force that the friction member 40 can exert on the winding member 20 decreases, and decreases from greater than the restoring force to less than the restoring force. By controlling the stroke of the operation structure 50, the maximum static friction force that the friction member 40 can exert on the winding member 20 can be slightly less than the restoring force. In this state, the friction force exerted by the friction member 40 on the winding member 20 changes to a dynamic friction force, which is less than the restoring force and the absolute value of the difference between the dynamic friction force and the restoring force is less than the preset difference value, so that the restoring force can overcome the dynamic friction force to drive the winding member 20 to rotate in the first direction, and then the wire harness is recovered into the containing space 11 under the driving of the winding member 20. It should be noted that the driving force for driving the winding member 20 to rotate in the first direction is the resultant force of the restoring force and the dynamic friction force. Since the difference between the dynamic friction force and the restoring force is less than the preset difference value, the driving force is less than the difference value, and then the winding member 20 rotates at a speed less than the predetermined speed under the driving of the driving force, so that the wire harness is recovered slowly and the possibility of the recovered wire harness hitting the user's hand is reduced.

[0059] It should be noted that the maximum static friction force that the friction member 40 can exert on the winding member 20 is positively correlated with the normal pressure between the friction member 40 and the winding member 20, and is positively correlated with the friction factor of the contact surface between the friction member 40 and the winding member 20, and is also positively correlated with the number of contact surfaces between the friction member 40 and the winding member 20. The operation structure 50 changes the maximum static friction force that the friction member 40 can exert on the winding member 20 by causing the relative movement between the friction member 40 and the winding member 20 to change the normal pressure, the friction factor or the number of contact surfaces between the friction member 40 and the winding member 20. By moving the friction member 40 from the first position to the second position through the operation structure 50, the maximum static friction force that the friction member 40 can exert on the winding member 20 can be reduced. It should be noted that the operation structure 50 can cause the relative movement between the friction member 40 and the winding member 20 in any way. For example, the operation structure 50 can be directly in contact with the friction member 40, and can cause the relative movement between the friction member 40 and the winding member 20 by applying a pushing force or a pulling force to the operation structure 50, or by rotating the operation structure 50. The operation structure 50 can also not be directly in contact with the friction member 40, but can control the movement of the friction member 40 through the control circuit. For example, the operation structure 50 can control the on-off of the circuit of the electromagnet, so that the relative movement between the friction member 40 and the winding member 20 is caused by the on-off of the circuit of the electromagnet.

[0060] As an example, the first value can be greater than the restoring force, and the second value can be less than the restoring force. The following will be described by way of example in relation to the change in the maximum static friction force exerted by the friction member 40 on the winding member 20, the relationship between the maximum static friction force and the restoring force, the operating state of the operating structure 50, the method of using the wire harness storage box 1, and the principle of the wire harness storage box 1 enabling the wire harness to be wound and unwound infinitely. In addition, the following will be described by way of example in relation to the principle of the wire harness storage box 1 enabling the wire harness to be wound and unwound infinitely and the principle of the wire harness storage box 1 enabling the wire harness to be retracted slowly during the process of winding and unwinding the wire harness.

[0061] First, the relationship between the maximum static friction force and the restoring force will be described. In a state in which the maximum static friction force that can be exerted by the friction member 40 on the winding member 20 is greater than the restoring force, the static friction force exerted by the friction member 40 on the winding member 20 can be adapted to the size of the restoring force, so that the size of the static friction force is equal to and opposite to the restoring force, thereby keeping the winding member 20 and the friction member 40 in a state of rest. In a state in which the maximum static friction force that can be exerted by the friction member 40 on the winding member 20 is less than the restoring force, the size of the static friction force is unable to prevent the relative movement of the winding member 20 and the friction member 40. At this time, the winding member 20 rotates in the first direction under the action of the restoring force, and the friction force exerted by the friction member 40 on the winding member 20 changes from static friction to dynamic friction. The friction force exerted by the friction member 40 on the winding member 20 can be the friction force directly exerted by the friction member 40 on the winding member 20, or the friction force between the friction member 40 and other components, which is transmitted to the winding member 20 through the friction member 40. The following will be described by way of example in relation to the principle of the wire harness storage box 1 enabling the wire harness to be wound and unwound infinitely, in a state in which the wire harness storage box 1 is used, and in relation to the principle of the wire harness storage box 1 preventing the user from being hit during the process of retracting the wire harness, and the principle of the wire harness storage box 1 enabling the wire harness to be wound and unwound infinitely. It should be noted that the pulling force exerted by the user on the wire harness forms a pulling torque on the winding member, the friction force exerted by the friction member 40 on the winding member 20 forms a friction torque, and the restoring force exerted by the first elastic member 30 on the winding member 20 also forms a torque

[0062] In the state that the wire harness needs to be pulled out from the accommodation space 11, the user applies a pulling force to the end of the wire harness, in which state, the force conditions of the winding member and the wire harness are as shown in FIG. 2, in combination with FIGS. 1 and 2, the pulling force F1 applied by the user to the end of the wire harness is greater than the friction force F2 applied by the friction member 40 to the winding member 20 and the restoring force F3 applied by the first elastic member to the winding member 20, so that the winding member 20 can overcome the friction force and the restoring force, and can move in the second direction under the driving of the wire harness, and the length of the wire harness extending out of the accommodation space 11 increases. As an example, in the process of pulling the wire harness, the friction member 40 can be brought to the second position by operating the structure 50, so as to reduce the maximum static friction force that the friction member 40 can apply to the winding member 20, and further reduce the size of the pulling force required to pull the wire harness.

[0063] In the state that the wire harness is pulled to the required length, the wire harness is released and the friction member 40 is brought to the first position by operating the structure 50, in which state, the force conditions of the winding member and the wire harness are as shown in FIG. 3, in combination with FIGS. 1 and 3, the static friction force F2 applied by the friction member 40 to the winding member 20, and the restoring force F3 applied by the first elastic member 30 to the winding member 20, since the size of the maximum static friction force that the friction member 40 can apply to the winding member 20 is greater than the restoring force F3, the static friction force F2 applied by the friction member 40 to the winding member 20 is equal in size and opposite in direction to the restoring force F3, so that the winding member 20 is in a static state and the length of the wire harness extending out remains unchanged. It can be understood that, by bringing the friction member 40 to the first position by operating the structure 50, the wire harness can be released when it extends to any length, and the length of the wire harness extending out can be maintained at the length when the user releases the wire harness, and the length of the wire harness can be infinitely extended. It should be noted that, if the user quickly pulls the wire harness and suddenly releases it, the winding member 20 can still be in a state of rotating in the second direction due to its own inertia, in which state, the dynamic friction force applied by the friction member 40 to the winding member 20 is in the same direction as the restoring force F3 applied by the first elastic member 30 to the winding member, so that the winding member 20 generates an acceleration in the first direction, so that the rotational speed of the winding member 20 in the second direction gradually decreases until the winding member 20 is in a static state, in which state, the friction force applied by the friction member 40 to the winding member 20 is converted from a dynamic friction force to a static friction force F2, and the static friction force F2 is equal in size and opposite in direction to the restoring force F3, so that the winding member remains static.

[0064] In the state that the extension length of the wire harness needs to be shortened, the friction member is moved to the second position by the operation structure 50, in which state, the force conditions of the winding member and the wire harness are as shown in FIG. 4, the friction force exerted by the friction member 40 on the winding member 20 is reduced from the static friction force F2 to the friction force F4, the first elastic member 30 exerts the restoring force F3 on the winding member 20, in combination with FIGS. 1 and 4, since the maximum static friction force that can be exerted by the friction member 40 on the winding member 20 is less than the restoring force F3, the friction force F4 exerted by the friction member 40 on the winding member 20 cannot limit the rotation of the winding member 20, so that the restoring force F3 can overcome the friction force and rotate in the first direction, and the end portion of the wire harness extending out of the accommodation space 11 is retracted into the accommodation space 11 by the winding member 20, and the friction force exerted by the friction member 40 on the winding member 20 is a dynamic friction force, it should be noted that since the friction member 40 can still exert a dynamic friction force on the winding member 20 during the retraction of the wire harness, the dynamic friction force can offset a part of the restoring force F3, thereby slowing down the rotation speed of the winding member 20 in the first direction and reducing the speed of the wire harness retraction, thereby reducing the risk of the user's hand being hit by the retracted wire harness.

[0065] In the state that the length of the wire harness retraction reaches the requirement, the friction member 40 is returned to the first position by the operation structure 50, in which state, the force conditions of the winding member and the wire harness are as shown in FIG. 2, in combination with FIGS. 1 and 2, the maximum static friction force that can be exerted by the friction member 40 on the winding member 20 is greater than the restoring force F3 exerted by the first elastic member 30 on the winding member 20, so that the friction force exerted by the friction member 40 on the winding member 20 is increased from the friction force F4 to the static friction force F2, the size of the static friction force F2 is equal to the size of the restoring force F3 and the direction is opposite, the winding member 20 changes from the state of rotating in the first direction to the static state, so that the wire harness stops retraction and the length of the wire harness is maintained at the length when the friction member 40 returns to the first position, it can be understood that the friction member 40 is returned to the first position by the operation structure in the state that the wire harness is retracted, so that the wire harness can stop retraction and maintain the length unchanged, and the length of the wire harness can be infinitely retracted.

[0066] In summary, by setting the size of the maximum static friction force that can be exerted by the friction member 40 on the winding member 20 at the first position and the second position, the infinitely extension and infinitely retraction of the wire harness can be achieved, so that the wire harness can be infinitely retracted and released.

[0067] The wire harness storage box provided by the embodiment of the present disclosure comprises a box body with an accommodating space inside, a winding member, a first elastic member, a friction member and an operating structure in the box body, the winding member is rotatably connected with the box body and the outer surface of the winding member is used for abutting against the wire harness, the winding member can wind the wire harness in a first direction to recover the wire harness, the wire harness drives the winding member to rotate in a second direction opposite to the first direction during the wire harness extending out of the accommodating space, the first elastic member is used for applying a restoring force along the first direction to the winding member, the friction member is used for applying a friction force to the winding member to limit the rotation of the friction member in the first direction, and the operating structure is used for moving the friction member between a first position and a second position, at the first position, the maximum static friction force that the friction member can apply to the winding member is a first value, and at the second position, the maximum static friction force that the friction member can apply to the winding member is a second value; the maximum static friction force between the friction member and the winding member can be changed through the operating member, and by adjusting the maximum static friction force between the friction member and the winding member, the wire harness can be kept at a proper length, thereby facilitating the length adjustment of the wire harness.

[0068] The first value can be greater than the restoring force, and the second value can be less than the restoring force, and it can be understood that the maximum static friction force between the friction member and the winding member can be changed through the operating member, and by designing the values of the maximum static friction force at the two positions, the size of the maximum static friction force can be changed between greater than the restoring force and less than the restoring force, so that when the friction member is in the first position, the maximum static friction force that the friction member can apply to the winding member is greater than the restoring force provided by the first elastic member, and the directions of the static friction force and the restoring force are opposite, so that during the extension of the wire harness, as long as the pulling force applied by the user is removed, the rotation of the winding member in the second direction can automatically stop, so that the length of the wire harness remains unchanged, realizing the endless extension of the wire harness; if the wire harness is to be retracted, the friction member is placed in the second position through the operating structure, when the friction member is in the second position, the static friction force applied by the friction member to the winding member is less than the restoring force provided by the first elastic member, and then the wire is automatically recovered, during the recovery of the wire harness, as long as the user places the friction member back to the first position through the operating member, the rotation of the winding member in the first direction can automatically stop, so that the length of the wire harness remains unchanged, realizing the endless recovery of the wire harness, and realizing the endless winding and unwinding of the wire harness. Here, the embodiment of the present disclosure can provide a wire harness storage box capable of endless winding and unwinding.

[0069] The line harness storage box can prevent the line harness from hitting the user's hand.

[0070] In some embodiments, as shown in FIG. 5, the winding member 20 includes a winding body 21 and a friction portion 22. The winding body 21 has a friction wall 211 and a bottom wall 212. The friction wall 211 surrounds the bottom wall 212, and the friction wall 211 is used to abut against the line harness. The friction portion 22 protrudes from the bottom wall 212, and the friction portion 22 and the bottom wall 212 enclose a friction space 23. The friction portion 22 forms a side wall 231 of the friction space 23, and the bottom wall 212 forms a top wall 232 of the friction space 23. The friction member 40 in FIG. 1 is located in the friction space 23 and can slide relative to the side wall 231, and the friction member 40 is used to abut against the side wall 231. The friction space 23 is formed by the friction portion 22 and the bottom wall 212, which can limit the movement direction and movement area of the friction member 40, so that the movement of the friction member 40 is more controllable. Moreover, the friction member 40 directly applies the friction force to the winding member 20, so that the movement of the friction member 40 between the first position and the second position does not need to drive the winding member 20 to move, and the line harness does not need to move between the first position and the second position with the winding member 20, which improves the reliability of the winding member 20 in limiting the line harness.

[0071] In some embodiments, as shown in FIG. 6, at the first position, the friction member 40 is in abutment with the side wall 231 and the top wall 232, and as shown in FIG. 7, at the second position, the friction member 40 is in abutment with the side wall 231 and is separated from the bottom wall 212. It can be understood that, by moving the friction member 40 between the first position and the second position through the operation member, the friction member 40 is switched from the state of being in abutment with both the side wall 231 and the top wall 232 of the friction space 23 to the state of being in abutment with only the side wall 231 of the friction space 23, and by changing the number of contact surfaces of the friction member 40 with the friction space 32, the maximum static friction force that the friction member 40 can exert on the rolling member 20 is changed between the first value and the second value.

[0072] The operation structure in FIG. 1 can be used to move the friction structure 40 between the first position and the second position, and in the direction from the first position to the second position, the friction force between the friction member 40 and the side wall 231 can be reduced, so that the maximum static friction force that the friction member 40 can exert on the rolling member 20 is reduced through the stroke control of the operation structure, and the maximum static friction force is gradually reduced to a state slightly smaller than the restoring force through the stroke control of the operation structure 50, so that the wire harness is slowly recovered, and the possibility of the user's hand being hit by the recovered wire harness is reduced.

[0073] In some embodiments, as shown in FIG. 8, at the first position, the abutment force between the friction member 40 in FIG. 1 and the side wall 231 is a first abutment force, and at the second position, the abutment force between the friction member 40 and the side wall is a second abutment force, and the first abutment force is greater than the second abutment force. It can be understood that, by moving the friction member 40 between the first position and the second position, the abutment force between the friction member 40 and the side wall 231 is changed, and the maximum static friction force that the friction member 40 can exert on the rolling member 20 is switched between the first value and the second value.

[0074] In some embodiments, as shown in FIG. 8, during the movement from the first position to the second position, the abutment force between the friction member 40 and the side wall 231 is reduced. It can be understood that, by moving the friction member 40 between the first position and the second position, the abutment force between the friction member 40 and the side wall 231 is changed, and the maximum static friction force that the friction member 40 can exert on the rolling member 20 is reduced.

[0075] The principle of changing the abutment force between the friction member 40 and the side wall 231 and the specific structure of the side wall 231 are exemplarily described below, and the implementation manner of reducing the maximum static friction force is exemplarily described.

[0076] As shown in FIG. 8, the first position and the second position are arranged in the depth direction of the friction space 23, the friction member 40 is capable of moving in the depth direction of the friction space 23, the cross-sectional area of the friction space 23 is the first area S1 at the first position, and the cross-sectional area of the friction space 23 is the second area S2 at the second position, the first area S1 is less than the second area S2, wherein the cross section is a plane perpendicular to the depth direction of the friction space 23, the cross-sectional area of the friction space 23 is increased from the first area to the second area in the depth direction of the friction space 23, the friction member 40 is moved from the first position to the second position in the depth direction of the friction space 23 by the operation structure 50 in FIG. 1, the abutting force between the friction member 40 and the side wall 231 can be reduced from the first abutting force to the second abutting force, so that the maximum static friction force that the friction member 40 can exert on the winding member 20 can be reduced from the first value to the second value, wherein the operation action applied to the operation structure 50 can be pressing or pulling in the depth direction of the friction space 23.

[0077] As an example, as shown in FIG. 8, in the depth direction of the friction space 23, the cross-sectional area of the friction space 23 can decrease, and during the movement of the friction member 40 from the first position to the second position, the abutting force between the friction member 40 and the side wall 231 gradually decreases from the first abutting force to the second abutting force, so that the maximum static friction force that the friction member 40 can exert on the winding member gradually decreases from the first value to the second value. It can be understood that by controlling the stroke of the operation structure 50 in FIG. 1, the difference between the maximum static friction force and the restoring force can be controlled, so that during the process of making the wire harness shrink, the stroke of the operation structure 50 can be controlled to make the maximum static friction force less than the restoring force and the difference between the dynamic friction force between the friction member 40 and the winding member 20 and the restoring force as small as possible, so that the wire harness can be recovered at a slower speed during the recovery process, further reducing the risk of the user's hand being hit by the recovered wire harness.

[0078] As shown in FIG. 9, the first position and the second position are spaced apart in a third direction (the third direction is shown by an arrow in FIG. 9), the third direction is perpendicular to the depth direction of the friction space 23, at the first position, the area of the longitudinal section of the friction space 23 is a third area S3, at the second position, the area of the longitudinal section of the friction space 23 is a fourth area S4, the third area S3 is less than the fourth area S4, wherein the longitudinal section is a plane perpendicular to the third direction, it can be understood that, in the third direction perpendicular to the depth direction of the friction space 23, the area of the cross section of the friction space 23 is increased from the third area S3 to the fourth area S4, by the operation structure 50 in FIG. 1, the friction member 40 is moved in the third direction from the first position to the second position, the abutting force between the friction member 40 and the side wall 231 can be reduced from the first abutting force to the second abutting force, so that the maximum static friction force that the friction member 40 can exert on the retraction member 20 is reduced from the first value to the second value, wherein the operation action applied to the operation structure 50 can be sliding in the third direction.

[0079] As an example, as shown in FIG. 9, in the third direction, the area of the longitudinal section of the friction space 23 can be increased, during the movement of the friction member 40 from the first position to the second position, the abutting force between the friction member 40 and the side wall 231 is gradually reduced from the first abutting force to the second abutting force, so that the maximum static friction force that the friction member 40 can exert on the retraction member is gradually reduced from the first value to the second value, it can be understood that, by controlling the stroke of the operation structure 50 in FIG. 1, the difference between the value of the maximum static friction force and the restoring force can be controlled, so that during the process of making the wire harness shrink, the maximum static friction force can be controlled to be smaller than the restoring force and the difference between the dynamic friction force between the friction member 40 and the retraction member 20 and the restoring force is as small as possible, so that the wire harness can be recovered at a slower speed during the recovery process, further reducing the risk of the user's hand being hit by the recovered wire harness.

[0080] In some embodiments, as shown in FIG. 10, the friction coefficient between the side wall 231 of the friction space 23 and the friction member 40 is a first coefficient at a first position, and is a second coefficient at a second position, the first coefficient can be greater than the second coefficient, it can be understood that by changing the material or smoothness of the side wall 231, the friction coefficient between the side wall 231 and the friction member 40 is changed between the first coefficient and the second coefficient, so that the maximum static friction force that the friction member 40 can exert on the winding member 20 is changed between a first value and a second value. The direction from the first position to the second position can be parallel to the depth direction of the friction space 23, and the operation action applied to the operation structure 50 in FIG. 1 can be pressing or pulling in the depth direction of the friction space 23; the direction from the first position to the second position can also be perpendicular to the depth direction of the friction space 23, and the operation action applied to the operation structure 50 in FIG. 1 can be sliding in a direction perpendicular to the depth direction.

[0081] As an example, as shown in FIG. 10, the friction coefficient between the side wall 231 of the friction space 23 and the friction member 40 can decrease in the direction from the first position to the second position, and the friction coefficient between the friction member 40 and the side wall 231 can gradually decrease from the first coefficient to the second coefficient during the movement of the friction member 40 from the first position to the second position, so that the maximum static friction force that the friction member 40 can exert on the winding member gradually decreases from the first value to the second value, it can be understood that by controlling the stroke of the operation structure 50 in FIG. 1, the difference between the maximum static friction force and the restoring force can be controlled, so that during the process of making the wire harness contract, the stroke of the operation structure 50 can be controlled to make the maximum static friction force less than the restoring force and the difference between the kinetic friction force between the friction member 40 and the winding member 20 and the restoring force as small as possible, so that the wire harness can be recovered at a slower speed during the recovery process, further reducing the risk of the user's hand being hit by the recovered wire harness.

[0082] In some embodiments, as shown in FIG. 11, the friction member 40 is fixedly connected with the winding member 20, the friction member 40 is capable of relative movement with the box body 10, and the friction member 40 abuts against the side wall of the accommodating space 11. It can be understood that the side wall of the accommodating space 11 is capable of exerting a friction force on the friction member 40, and the friction force can be transmitted to the winding member 20 through the friction member 40, thereby limiting the rotation of the winding member 20 in the first direction. Wherein, at the first position, the side wall of the accommodating space 11 is capable of exerting a maximum static friction force on the friction member 40, and the size of the maximum static friction force is a first value; at the second position, the side wall of the accommodating space 11 is capable of exerting a maximum static friction force on the friction member 40, and the size of the maximum static friction force is a second value, so that the friction member 40 is capable of transmitting a maximum static friction force to the winding member 20 at the first position and the second position, and the size of the maximum static friction force is the first value and the second value, respectively. By setting the friction member 40 and the winding member 20 as one body and making the friction member 40 abut against the side wall of the accommodating space 11, the friction member 40 and the winding member 20 can be integrally formed, and there is no need to additionally set a friction part protruding from the winding member 20, so that the existing friction force between the side wall of the accommodating space 11 and the friction member 40 can be directly utilized, thereby reducing the manufacturing cost of the wire harness storage box 1.

[0083] In some embodiments, as shown in FIG. 11, at the first position, the abutting force between the friction member 40 and the side wall of the accommodating space 11 is a third abutting force, at the second position, the abutting force between the friction member 40 and the side wall of the accommodating space 11 is a fourth abutting force, and the fourth abutting force is smaller than the third abutting force. It can be understood that by moving the friction member 40 and the winding member 20 between the first position and the second position, the abutting force between the friction member 40 and the side wall of the accommodating space 11 can be reduced from the third abutting force to the fourth abutting force, so that the maximum static friction force capable of being exerted by the side wall of the accommodating space 11 on the friction member 40 is reduced from the first value to the second value, and the maximum static friction force capable of being transmitted by the friction member 40 to the winding member is reduced from the first value to the second value.

[0084] As an example, the operating structure 50 in FIG. 1 is used to control the movement of the friction member 40 between the first position and the second position. During the movement of the friction member 40 from the first position to the second position, the friction force between the friction member 40 and the side wall of the accommodating space 11 can be gradually reduced, so that the maximum static friction force capable of being exerted by the friction member 40 on the winding member 20 can be gradually reduced through the stroke control of the operating structure, and the maximum static friction force can be gradually reduced to a state slightly smaller than the restoring force through the stroke control of the operating structure 50, so that the wire harness is slowly recovered, and the possibility that the user's hand is hit by the recovered wire harness is reduced. The implementation of the gradual reduction of the maximum static friction force is exemplarily described below.

[0085] In some embodiments, as shown in FIG. 11, the abutting force between the friction member 40 and the side wall of the accommodation space 11 can decrease during the movement of the friction member 40 from the first position to the second position, so that the maximum static friction force exerted by the side wall of the accommodation space 11 on the friction member 40 decreases from the first value to the second value, and the maximum static friction force transmitted by the friction member 40 to the rolling member decreases from the first value to the second value.

[0086] The principle of the change in the abutting force will be described below in conjunction with the shape of the accommodation space 11.

[0087] As shown in FIG. 12, the first position and the second position are arranged in the depth direction of the accommodation space 11, the friction member 40 and the rolling member 20 can move in the depth direction of the accommodation space 11, the cross-sectional area of the accommodation space 11 at the first position is a fifth area S5, and the cross-sectional area of the accommodation space 11 at the second position is a sixth area S6, the fifth area S5 is smaller than the sixth area S6, wherein the cross section is a plane perpendicular to the depth direction of the accommodation space 11, and the area of the cross section of the accommodation space 11 increases from the fifth area to the sixth area in the depth direction of the accommodation space 11, the movement of the friction member 40 in the depth direction of the accommodation space 11 from the first position to the second position by the operation structure 50 in FIG. 1 can cause the abutting force between the friction member 40 and the side wall of the accommodation space 11 to decrease from the third abutting force to the fourth abutting force, so that the maximum static friction force exerted by the friction member 40 on the rolling member 20 decreases from the first value to the second value, wherein the operation action applied to the operation structure 50 can be a pressing or pulling in the depth direction of the accommodation space 11.

[0088] As an example, as shown in FIG. 12, the cross-sectional area of the accommodation space 11 can decrease in the depth direction of the accommodation space 11, and the abutting force between the friction member 40 and the side wall 231 can gradually decrease from the third abutting force to the fourth abutting force during the movement of the friction member 40 from the first position to the second position, so that the maximum static friction force exerted by the friction member 40 on the rolling member gradually decreases from the first value to the second value. It can be understood that by controlling the stroke of the operation structure 50 in FIG. 1, the difference between the maximum static friction force and the restoring force can be controlled, so that during the process of making the wire harness shrink, the maximum static friction force can be controlled by the stroke of the operation structure 50 to be smaller than the restoring force and the difference between the dynamic friction force exerted by the friction member 40 on the rolling member 20 and the restoring force is as small as possible, so that the wire harness can be recovered at a slower speed during the recovery process, further reducing the risk of the user's hand being hit by the recovered wire harness.

[0089] As shown in FIG. 13, the first position and the second position are spaced apart in a fourth direction (the fourth direction is shown by an arrow in FIG. 13), the fourth direction is perpendicular to the depth direction of the accommodation space 11, the area of the longitudinal section of the accommodation space 11 is a seventh area S7 at the first position, and the area of the longitudinal section of the accommodation space 11 is an eighth area S8 at the second position, the seventh area S7 is less than the eighth area S8, wherein the longitudinal section is a plane perpendicular to the fourth direction, it can be understood that, in the fourth direction perpendicular to the depth direction of the accommodation space 11, the area of the cross section of the accommodation space 11 is increased from the seventh area S7 to the eighth area S8, the friction piece 40 is moved in the fourth direction from the first position to the second position by the operation structure 50 in FIG. 1, the abutting force between the friction piece 40 and the side wall of the accommodation space 11 can be reduced from the third abutting force to the fourth abutting force, so that the maximum static friction force that the friction piece 40 can exert on the rolled-up piece 20 is reduced from the first value to the second value, wherein the operation action applied to the operation structure 50 can be sliding in the fourth direction.

[0090] As an example, as shown in FIG. 13, in the fourth direction, the area of the longitudinal section of the accommodation space 11 can be increased, and the abutting force between the friction piece 40 and the side wall of the accommodation space 11 can be gradually reduced from the third abutting force to the fourth abutting force during the movement of the friction piece 40 from the first position to the second position, so that the maximum static friction force that the friction piece 40 can exert on the rolled-up piece is gradually reduced from the first value to the second value, it can be understood that, by controlling the stroke of the operation structure 50 in FIG. 1, the difference between the value of the maximum static friction force and the restoring force can be controlled, so that during the process of making the wire harness shrink, the maximum static friction force can be controlled to be less than the restoring force and the difference between the dynamic friction force between the friction piece 40 and the rolled-up piece 20 and the restoring force is as small as possible by the stroke control of the operation structure 50, so that the wire harness can be recovered at a slower speed during the recovery process, further reducing the risk of the user's hand being hit by the recovered wire harness.

[0091] In some embodiments, as shown in FIG. 14, the friction coefficient between the side wall of the accommodating space 11 and the friction member 40 is a third coefficient at the first position, and is a fourth coefficient at the second position, the third coefficient is greater than the fourth coefficient, and it can be understood that the friction coefficient between the side wall of the accommodating space 11 and the friction member 40 is changed between the third coefficient and the fourth coefficient by changing the material or smoothness of the side wall of the accommodating space 11, so that the maximum static friction force that the friction member 40 can exert on the winding member 20 is changed between the first value and the second value. The direction from the first position to the second position can be parallel to the depth direction of the accommodating space 11, and the operation action applied to the operation structure 50 in FIG. 1 can be pressing or pulling along the depth direction of the accommodating space 11; the direction from the first position to the second position can also be perpendicular to the depth direction of the accommodating space 11, and the operation action applied to the operation structure 50 in FIG. 1 can be sliding along a direction perpendicular to the depth direction.

[0092] As an example, as shown in FIG. 14, the friction coefficient between the side wall of the accommodating space 11 and the friction member 40 can decrease in the direction from the first position to the second position, and the friction coefficient between the friction member 40 and the side wall of the accommodating space 11 gradually decreases from the third coefficient to the fourth coefficient during the movement of the friction member 40 from the first position to the second position, so that the maximum static friction force that the friction member 40 can exert on the winding member gradually decreases from the first value to the second value, and it can be understood that the difference between the maximum static friction force and the restoring force can be controlled by controlling the stroke of the operation structure 50 in FIG. 1, so that the maximum static friction force is smaller than the restoring force and the difference between the kinetic friction force between the friction member 40 and the winding member 20 and the restoring force is as small as possible during the process of making the wire harness contract, so that the wire harness can be recovered at a slower speed during the recovery process, further reducing the risk of the user's hand being hit by the recovered wire harness.

[0093] In some embodiments, as shown in FIG. 15, the operating structure 50 and the friction member 40 can be located on the same side of the rolling member 20, so that the operating structure 50 does not need to pass through the rolling member 20, thereby making the structure of the wire harness storage box more compact. The operating structure 50 can control the movement of the friction member 40 in any way. For example, by pushing or pulling the operating structure 50, the friction member 40 can move in the depth direction of the friction space 23 in FIG. 5, or in the depth direction of the accommodation space 11 in FIG. 11, so that the friction member 40 can move between the first position and the second position. For example, the operating structure 50 can also slide in a third direction perpendicular to the depth direction of the friction space 23 in FIG. 5, or in a fourth direction perpendicular to the depth direction of the accommodation space 23 in FIG. 11, so that the friction member 40 can move between the first position and the second position.

[0094] In some embodiments, as shown in FIG. 16, the operating structure 50 and the friction member 40 can be located on both sides of the rolling member 20, and the operating structure 50 needs to pass through the rolling member 20 to connect with the friction member 40, so that the operating structure 50 can control the position of the friction member 40. By locating the friction member 40 and the operating structure 50 on both sides of the rolling member 20, the friction member 40 can move in the entire space on the side of the rolling member 20 opposite to the operating structure 50, so that the friction member 40 has a larger movement stroke, and the operating structure 50 also has a larger movement stroke, thereby making the stroke control of the operating structure 50 more convenient.

[0095] As an example, as shown in FIG. 16, the wire harness storage box 1 further comprises a second elastic member 60, the second elastic member 60 and the friction member 40 are located on the same side of the rolling member 20, and are used to abut against the friction member 40. In the state that the user moves the friction member 40 from the first position to the second position by operating the operating structure 50, the second elastic member 60 is in a compressed state. After the user removes the applied force on the operating structure 50, the second elastic member 60 can apply a restoring force to the friction member 40, so that the friction member 40 automatically returns to the first position from the second position.

[0096] The above only describes some embodiments of the present disclosure, and is not intended to limit the protection scope of the present disclosure.

Claims

1. A harness storage box, comprising: a box body having an accommodation space inside for accommodating a harness; a winding member located in the accommodation space and rotatably connected with the box body, an outer surface of the winding member being used for abutting against the harness, rotation of the winding member in a first direction being capable of moving the harness into the accommodation space, the harness driving the winding member to rotate in a second direction in a process of moving out of the accommodation space, the first direction and the second direction being opposite; a first elastic member connected with the winding member and used for applying a restoring force along the first direction to the winding member; a friction member used for applying a friction force to the winding member to limit rotation of the winding member in the first direction; an operation structure connected with the friction member and used for moving the friction member between a first position and a second position, at the first position and the second position, a maximum static friction force capable of being applied by the friction member to the winding member being respectively a first value and a second value.

2. The wire harness housing case according to claim 1, wherein The first value is greater than the restoring force, and the second value is less than the restoring force.

3. The wire harness housing case according to claim 2, wherein The winding member comprises: a winding body having a friction wall and a bottom wall, the friction wall surrounding the bottom wall, the friction wall being used for abutting against the harness; a friction part protruding from the bottom wall, and the friction part and the bottom wall enclosing a friction space, the friction part forming a side wall of the friction space; wherein the friction member is located in the friction space and is capable of sliding relative to the side wall, and the friction member abuts against the side wall.

4. The wire harness housing case according to claim 3, wherein At the first position, the friction member abuts against the side wall and abuts against the bottom wall, and at the second position, the friction member abuts against the side wall and is separated from the bottom wall.

5. The wire harness housing case according to claim 3 or 4, wherein At the first position, an abutting force between the friction member and the side wall is a first abutting force, and at the second position, an abutting force between the friction member and the side wall is a second abutting force, the first abutting force being greater than the second abutting force.

6. The wire harness housing case according to any one of claims 3 to 5, wherein The first position and the second position are arranged in a depth direction of the friction space, at the first position, an area of a cross section of the friction space is a first area, and at the second position, an area of a cross section of the friction space is a second area, the first area being less than the second area, wherein the cross section is a plane perpendicular to the depth direction of the friction space.

7. The wire harness housing case according to any one of claims 3 to 5, wherein The first position and the second position are arranged in a third direction, the third direction being perpendicular to the depth direction of the friction space, at the first position, an area of a longitudinal section of the friction space is a third area, and at the second position, an area of a longitudinal section of the friction space is a fourth area, the third area being less than the fourth area, wherein the longitudinal section is a plane perpendicular to the third direction.

8. The wire harness housing case according to any one of claims 3 to 6, wherein At the first position, a friction coefficient between the side wall of the friction space and the friction member is a first coefficient, and at the second position, a friction coefficient between the side wall of the friction space and the friction member is a second coefficient, the first coefficient being greater than the second coefficient.

9. The wire harness housing case according to claim 1, wherein The friction member is fixedly connected with the winding member, the friction member is capable of relative movement with the box body, and the friction member abuts against the side wall of the accommodation space; The abutting force between the friction member and the side wall of the accommodation space is a third abutting force at the first position, and is a fourth abutting force at the second position, the third abutting force being greater than the fourth abutting force.

10. The wire harness housing case according to any one of claims 1 to 9, wherein The operation structure is located on the same side of the winding member as the friction member; or, The operation structure is located on opposite sides of the winding member as the friction member.

11. The wire harness storage box according to any one of claims 1 to 10, The operation structure is used to control the friction force to be less than the restoring force when the wire harness is recovered, and the absolute value of the difference between the friction force and the restoring force is less than a preset difference value, so that the wire harness recovery speed is less than a predetermined speed.

12. The wire harness housing case according to claim 11, wherein The winding member comprises: A winding body for abutting against the wire harness; A friction portion protruding from a bottom wall of the winding body and surrounding the bottom wall to form a friction space, the friction portion forming a side wall of the friction space; The friction member is located in the friction space and is capable of sliding relative to the side wall, the friction member abutting against the side wall, and the friction force between the friction member and the side wall decreases in a direction from the first position to the second position.

13. The wire harness storage box according to claim 12, wherein the abutting force between the friction member and the side wall decreases from a first abutting force to a second abutting force during movement of the friction member from the first position to the second position.

14. The wire harness housing case according to claim 12 or 13, wherein The first position and the second position are arranged in a depth direction of the friction space, the cross-sectional area of the friction space increases from a first area to a second area in a direction from the first position to the second position, wherein the cross section is a plane perpendicular to the depth direction of the friction space.

15. The wire harness housing case according to claim 12 or 13, wherein The first position and the second position are arranged in a third direction perpendicular to the depth direction of the friction space, the area of the longitudinal cross section of the friction space increases from a third area to a fourth area in a direction from the first position to the second position, wherein the longitudinal cross section is a plane perpendicular to the third direction.

16. The wire harness housing case according to any one of claims 12 to 15, wherein The friction coefficient between the friction member and the side wall decreases from a first coefficient to a second coefficient in a direction from the first position to the second position.

17. The wire harness housing case according to claim 11, wherein, The friction member is fixedly connected with the winding member, the friction member abuts against the side wall of the accommodation space and is capable of relative movement with the box body; The operation structure is used to control the friction member to move between the first position and the second position, and the friction force between the friction member and the side wall decreases during movement of the friction member from the first position to the second position.

18. The wire harness housing case according to claim 17, wherein, The first position and the second position are arranged in a depth direction of the accommodation space, and an area of a cross section of the accommodation space increases in a direction from the first position to the second position, wherein the cross section is a plane perpendicular to the depth direction of the accommodation space.

19. The wire harness housing case according to claim 17, wherein, The first position and the second position are arranged in a fourth direction, and an area of a longitudinal section of the accommodation space increases in a direction from the first position to the second position, wherein the longitudinal section is a plane perpendicular to the fourth direction, and the fourth direction is perpendicular to the depth direction of the accommodation space.

20. The wire harness housing case according to any one of claims 17 to 19, wherein, In the direction from the first position to the second position, a friction coefficient between the friction member and a side wall of the accommodation space decreases from a third coefficient to a fourth coefficient.

Images