Damping pulley for luggage case

Abstract

The utility model relates to a damping pulley for a luggage case, which comprises a bearing seat, a roller and a locking assembly, the roller is rotatably supported on the bearing seat, a plurality of locking grooves concentric with the roller are circumferentially arranged, the locking assembly comprises a driving part and a locking rod, the driving part is rotatably supported on the bearing seat, and the locking rod is rotatably supported on the bearing seat. The locking rod is arranged on the bearing seat in a sliding mode, a guide part is arranged on the driving piece, and when the rolling wheel is in a rotating state, the guide part abuts against the locking rod; and when the driving piece rotates along the bearing seat until the guide part is separated from the locking rod, the end of the locking rod is located in the locking groove, and the sliding wheel locking device has the effect of conveniently locking the sliding wheel.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pulleys, in particular to a shock-absorbing pulley for luggage. BACKGROUND

[0002] Pulleys are widely used in luggage, office chairs and other places that require convenient movement due to their small rolling friction, flexible and portable movement. When in use, the user only needs to install the pulley on the installation surface, which greatly improves the movement efficiency of the object and the user experience.

[0003] In order to improve the practicability of the pulley and the convenience of the user, the pulley usually has a locking function, usually a friction locking structure, that is, the locking function is realized by driving the locking piece to move close to the pulley. When the locking piece abuts against the pulley, it will limit the continued rotation of the pulley. In addition, some pulleys use gear locking structure to realize the locking of the pulley, which is conducive to popularization and application.

[0004] However, for the pulley with friction locking structure, after the locking piece locks the pulley, the pulley still bears the rolling friction. When the locking force exerted by the locking piece on the pulley is less than the rolling friction borne by the pulley, the pulley will be in a rotating state relative to the locking piece. At the same time, for the pulley with gear locking structure, the locking force is realized by the mutual engagement of the locking gears. The mechanical mechanism is complex, which is not conducive to the maintenance of the pulley, and there is room for improvement. CONTENT OF THE INVENTION

[0005] In order to facilitate the locking of the pulley, the present application provides a shock-absorbing pulley for luggage.

[0006] The shock-absorbing pulley for luggage provided by the present application adopts the following technical scheme:

[0007] A shock-absorbing pulley for luggage, comprising a bearing seat, a rolling wheel and a locking assembly, the rolling wheel is rotationally supported on the bearing seat, a plurality of locking grooves are arranged in a circumferential manner concentrically with the rolling wheel, the locking assembly comprises a driving member and a locking rod, the driving member is rotationally supported on the bearing seat, the locking rod is slidingly arranged on the bearing seat, a guide portion is arranged on the driving member, and the guide portion abuts against the locking rod when the rolling wheel is in a rotating state; when the driving member rotates along the bearing seat until the guide portion is separated from the locking rod, the end portion of the locking rod is located in the locking groove.

[0008] By adopting the technical scheme, the roller is rotationally connected with the bearing seat, so that the roller can smoothly rotate along the bearing seat; when locking along the bearing seat is needed, an acting force is applied to the driving member, so that the driving member rotates along the bearing seat, and when the guide portion is separated from the locking rod, the end portion of the locking rod can be located in the locking groove, so that the purpose of locking the roller is achieved; meanwhile, when the roller along the bearing seat needs to be unlocked, the guide portion is in abutment with the locking rod, so that the locking rod and the locking groove are limited from being locked and matched, the mechanical structure is simple, and the convenience of lifting the pulley lock is positively guided.

[0009] Preferably, the bearing seat is provided with a guide groove, and the locking rod is slidingly arranged in the guide groove.

[0010] By adopting the technical scheme, the stability of the locking rod when sliding along the bearing seat is improved by the limiting and guiding effects of the guide groove, and the probability of the locking rod being stuck or deviated when moving along the bearing seat is reduced.

[0011] Preferably, the locking assembly further comprises a return spring, one end of the return spring along the length direction is in abutment with a side of the locking rod away from the guide portion, and the other end of the return spring is in abutment with the bearing seat, and the return spring is used to drive the locking rod to move towards the guide portion.

[0012] By adopting the technical scheme, the locking rod is driven to move towards the guide portion by the return spring, so that the probability of the locking rod being stuck in the locking groove when the roller rotates and the driving member is not subjected to an external force and the locking rod is in a sliding state along the guide groove is reduced.

[0013] Preferably, a guide surface is arranged on a side of the locking rod facing the guide portion, and the guide surface is used to guide the guide portion to act along the locking rod.

[0014] By adopting the technical scheme, the path of the guide portion moving along the locking rod is limited by the guiding effect of the guide surface, so that the acting force borne by the locking rod when moving towards the guide portion is reduced, and the rate of mechanical loss of the locking rod and / or the guide portion due to friction is positively guided to be reduced.

[0015] Preferably, the guide surface is arranged in a rounded corner shape.

[0016] By adopting the technical scheme, the guide surface is arranged in a rounded corner shape, which is beneficial to improving the smoothness of the guide portion when moving towards the locking rod, reducing mechanical jamming, and further reducing the acting force generated when the locking rod and the guide portion move relative to each other.

[0017] Preferably, the mounting base is used to connect the mounting surface, one end of the mounting base is rotatably connected with the bearing base, one end of the damping spring is abutted with the mounting base, and the other end of the damping spring is abutted with the bearing base, and the damping spring is used to apply a reverse force to the mounting base when the mounting base bears a force.

[0018] By adopting the above technical scheme, the damping spring is beneficial to improve the damping capacity of the pulley, and positively guides the experience of the user during use.

[0019] Preferably, the mounting base comprises a base and a rotating part, the base is used to connect the mounting surface, and the rotating part is rotatably connected with the base.

[0020] By adopting the above technical scheme, the rotating cooperation of the base and the rotating part realizes the steering function of the pulley and improves the user's experience.

[0021] Preferably, the tolerance fit relationship between the slot width of the guide slot and the width of the locking rod is gap fit.

[0022] By adopting the above technical scheme, since the tolerance fit relationship between the slot width of the guide slot and the width of the locking rod is gap fit, the probability of the locking rod being stuck when the locking rod moves along the guide slot is reduced, and the smoothness of the locking rod sliding along the sliding slot is improved.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. A plurality of locking slots are formed on the roller, when locking along the bearing base is needed, a force is applied to the driving member, so that the driving member rotates along the bearing base, when the guide part is separated from the locking rod, the end of the locking rod can be located in the locking slot, so as to realize the purpose of locking the roller, and when the roller along the bearing base needs to be unlocked, the guide part is in abutment with the locking rod, so as to limit the locking of the locking rod and the locking slot, the mechanical structure is simple, and the convenience of locking the pulley is positively guided.

[0025] 2. The locking rod is driven by the return spring to move towards the guide part, and the probability of the locking rod being stuck in the locking slot when the roller rotates and the driving member is not affected by external force is reduced.

[0026] 3. The damping spring is beneficial to improve the damping capacity of the pulley, and positively guides the experience of the user during use. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1It is a whole structure schematic diagram of a shock-absorbing pulley for a luggage.

[0028] Figure 2 It is Figure 1 An explosion structure schematic diagram of a shock-absorbing pulley for a luggage along the axial direction shown.

[0029] Figure 3 It is Figure 2 An enlarged structure schematic diagram of part A.

[0030] Figure 4 It is a structure schematic diagram of a bearing seat in a shock-absorbing pulley for a luggage.

[0031] Figure 5 It is Figure 4 Another view structure schematic diagram of a shock-absorbing pulley for a luggage.

[0032] Figure 6 It is a cooperation relationship schematic diagram of a locking rod and a reset spring in a shock-absorbing pulley for a luggage.

[0033] Figure 7 It is a structure schematic diagram of a driving member in a shock-absorbing pulley for a luggage.

[0034] Marked with a figure: 1, bearing seat; 11, guide groove; 12, mounting hole; 13, mounting position; 2, roller; 3, locking assembly; 31, driving member; 32, locking rod; 321, guide part; 33, reset spring; 4, locking groove; 5, guide surface; 6, mounting seat; 61, base; 62, rotating part; 7, shock-absorbing spring; 8, rotating shaft; 9, through hole; 10, connecting shaft; 101, guide shaft; 102, guide hole. DETAILED DESCRIPTION

[0035] The following will be combined with the Figures 1-7 The application is further described in detail.

[0036] The embodiment of the application discloses a shock-absorbing pulley for a luggage. Refer to Figure 1 , Figure 2 and Figure 3The application discloses a shock-absorbing pulley for a luggage bag, which comprises a bearing seat 1, a roller 2 and a locking assembly 3, the roller 2 is rotatably borne on the bearing seat 1, a plurality of locking grooves 4 are circumferentially arranged in the roller 2, the locking assembly 3 comprises a driving piece 31 and a locking rod 32, the driving piece 31 is rotatably borne on the bearing seat 1, the locking rod 32 is slidably arranged on the bearing seat 1, a guide part 321 is arranged on the driving piece 31, when the roller 2 is in a rotating state, the guide part 321 abuts against the locking rod 32, when the driving piece 31 rotates along the bearing seat 1 until the guide part 321 is separated from the locking rod 32, the end of the locking rod 32 is located in the locking groove 4.

[0037] Firstly, it should be noted that the specific number of the locking grooves 4 can be increased or decreased according to the actual size and design requirements of the roller 2, and the specific number is not limited here.

[0038] Specifically, the bearing seat 1 is provided with a mounting hole 12 penetrating in the thickness direction, a rotating shaft 8 is mounted in the mounting hole 12, the roller 2 is mounted on both ends of the rotating shaft 8 in the length direction and is rotatably connected with the rotating shaft 8, and the roller 2 and the rotating shaft 8 are connected in a conventional manner in the mechanical field (for example, connected through a bearing), and the specific connection manner is not described here.

[0039] Further, referring to Figure 4 and Figure 5 , the bearing seat 1 on one side of the mounting hole 12 is provided with a mounting position 13 for mounting the driving piece 31, the bearing seat 1 at the mounting position 13 is provided with a penetrating hole 9 penetrating in the thickness direction, and the driving piece 31 is provided with a connecting hole penetrating in the thickness direction, the connecting hole and the penetrating hole 9 are concentrically arranged, and a connecting shaft 10 is penetratingly arranged in the connecting hole and the penetrating hole 9, so as to realize the rotating connection between the driving piece 31 and the bearing seat 1.

[0040] Correspondingly, the bearing seat 1 is provided with a guide groove 11, the locking rod 32 is slidably arranged in the guide groove 11, and the tolerance fit relationship between the groove width of the guide groove 11 and the width of the locking rod 32 is gap fit, so as to reduce the probability of the locking rod 32 being stuck when the locking rod 32 moves along the guide groove 11, and improve the smoothness of the locking rod 32 sliding along the sliding groove.

[0041] The guide groove 11 is located between the mounting hole 12 and the through hole 9. In order to avoid displacement of the locking rod 32 along the thickness direction of the bearing seat 1 when the locking rod 32 slides in the guide groove 11, a guide shaft 101 is arranged at the midpoint of the length direction of the locking rod 32, and the spatial position relationship between the guide shaft 101 and the locking rod 32 is vertically arranged. At the same time, a guide hole 102 is arranged on the bearing seat 1, so that the guide shaft 101 can smoothly slide along the guide hole 102. When the locking rod 32 is located in the guide groove 11, the guide shaft 101 is located in the guide hole 102, so as to limit the longitudinal displacement of the locking rod 32 in the guide groove 11.

[0042] At the same time, referring to Figure 6 , the locking assembly 3 further comprises a reset spring 33, one end of the reset spring 33 along the length direction abuts against the side of the locking rod 32 away from the guide portion 321, and the other end of the reset spring 33 abuts against the bearing seat 1. The reset spring 33 is used to drive the locking rod 32 to move towards the guide portion 321. The reset spring 33 is located in the guide hole 102, and the end of the reset spring 33 abutting against the locking rod 32 is movably arranged on the guide shaft 101. The elastic potential energy stored in the reset spring 33 can drive the locking rod 32 to move away from the guide hole 102. By driving the locking rod 32 to move towards the guide portion 321 through the reset spring 33, the probability of the locking rod 32 being stuck in the clamping groove due to the sliding state of the locking rod 32 along the guide groove 11 when the roller 2 rotates and the driving member 31 is not subjected to external force is reduced.

[0043] In addition, the side of the locking rod 32 facing the guide portion 321 is provided with a guide surface 5. The guide surface 5 is used to guide the guide portion 321 to move along the locking rod 32. The guide surface 5 is inclinedly arranged along the upper surface of the bearing seat 1 to the lower surface of the bearing seat 1. Through the guiding effect of the guide surface 5, the path of the guide portion 321 moving along the locking rod 32 is limited, the force borne by the locking rod 32 when moving towards the guide portion 321 is reduced, and the rate of mechanical loss of the locking rod 32 and / or the guide portion 321 due to friction is slowed down.

[0044] Correspondingly, the guide surface 5 is arranged with a rounded corner. Since the guide surface 5 is arranged with a rounded corner, the smoothness of the guide portion 321 during the movement towards the locking rod 32 is improved, mechanical jamming is reduced, and the force generated when the locking rod 32 and the guide portion 321 move relative to each other is further reduced.

[0045] Referring to Figure 1 , Figure 2 and Figure 3Further comprising a mounting seat 6 and a damping spring 7, the mounting seat 6 is used for connecting the mounting surface, one end of the mounting seat 6 is rotatably connected with the bearing seat 1, one end of the damping spring 7 is abutted with the mounting seat 6, the other end of the damping spring 7 is abutted with the bearing seat 1, and the damping spring 7 is used for applying a reverse force to the mounting seat 6 when the mounting seat 6 bears a force.

[0046] Specifically, the mounting seat 6 comprises a base 61 and a rotating part 62, the base 61 is used for connecting the mounting surface, the rotating part 62 is rotatably connected with the base 61, and the rotating function (0°~any angle rotation) of the pulley is realized through the rotating cooperation of the base 61 and the rotating part 62, thereby improving the user experience, wherein the rotating part 62 is located at one end of the bearing seat 1 away from the guide groove 11, and at the same time, a limiting groove is opened at one end of the bearing seat 1 towards the rotating part 62, and the damping spring 7 is installed in the limiting groove, thereby limiting the installation position of the damping spring 7, reducing the instability of the damping spring 7 cooperating with the rotating part 62 and the bearing seat 1, and reducing the probability of the damping spring 7 falling off between the rotating part 62 and the bearing seat 1.

[0047] Therefore, when the base 61 bears a force, the damping spring 7 will also bear a force applied by the base 61, so as to store elastic potential energy of the damping spring 7, provide a reverse force for the base 61, provide damping capacity for the base 61, and positively guide the improvement of the user experience.

[0048] The implementation principle of the damping pulley for the luggage bag is that a plurality of locking grooves 4 are opened on the roller 2, when it is needed to lock along the bearing seat 1, a force is applied to the driving part 31, so that the driving part 31 rotates along the bearing seat 1, when the guide part 321 is separated from the locking rod 32, the end of the locking rod 32 can be located in the locking groove 4, so as to achieve the purpose of locking the roller 2, and when it is needed to unlock the roller 2 along the bearing seat 1, the guide part 321 is in abutment with the locking rod 32, so as to limit the locking cooperation of the locking rod 32 and the locking groove 4, the mechanical structure is simple, and the convenience of the pulley locking is positively guided.

[0049] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, so that: any equivalent changes made on the structure, shape and principle of the present application should be covered in the protection scope of the present application.

Claims

1. A shock absorbing trolley wheel for a luggage bag, characterized by: The application relates to a bearing seat (1), a roller (2) and a locking assembly (3), the roller (2) is rotatably borne on the bearing seat (1), a plurality of locking grooves (4) are arranged in a circumferential manner on the roller (2) in a concentric manner, the locking assembly (3) comprises a driving member (31) and a locking rod (32), the driving member (31) is rotatably borne on the bearing seat (1), the locking rod (32) is slidably arranged on the bearing seat (1), a guide portion (321) is arranged on the driving member (31), when the roller (2) is in a rotating state, the guide portion (321) abuts against the locking rod (32), when the driving member (31) rotates along the bearing seat (1) until the guide portion (321) is separated from the locking rod (32), the end of the locking rod (32) is located in the locking groove (4).

2. A shock absorbing trolley wheel for a luggage case according to claim 1, wherein: A guide groove (11) is arranged on the bearing seat (1), and the locking rod (32) is slidably arranged in the guide groove (11).

3. A shock absorbing trolley wheel for a luggage case according to claim 2, wherein: The locking assembly (3) further comprises a reset spring (33), one end of the reset spring (33) abuts against one side of the locking rod (32) which is away from the guide portion (321), the other end of the reset spring (33) abuts against the bearing seat (1), and the reset spring (33) is used for driving the locking rod (32) to move towards the guide portion (321).

4. A shock absorbing trolley wheel for a luggage case according to claim 3, wherein: A guide surface (5) is arranged on one side of the locking rod (32) which is away from the guide portion (321), and the guide surface (5) is used for guiding the guide portion (321) to move along the locking rod (32).

5. A shock absorbing trolley wheel for a luggage case according to claim 4, wherein: The guide surface (5) is arranged in an inverted round corner mode.

6. A shock absorbing trolley wheel for a luggage case according to claim 5, wherein: The application further relates to a mounting seat (6) and a damping spring (7), the mounting seat (6) is used for connecting a mounting surface, one end of the mounting seat (6) is rotatably connected with the bearing seat (1), one end of the damping spring (7) abuts against the mounting seat (6), and the other end of the damping spring (7) abuts against the bearing seat (1), the damping spring (7) is used for applying a reverse force to the mounting seat (6) when the mounting seat (6) bears a force.

7. A shock absorbing trolley wheel for a luggage case according to claim 6, wherein: The mounting seat (6) comprises a base (61) and a rotating portion (62), the base (61) is used for connecting a mounting surface, and the rotating portion (62) is rotatably connected with the base (61).

8. A shock absorbing trolley wheel for a luggage case according to claim 7, wherein: The gap fit relationship is adopted between the groove width of the guide groove (11) and the width of the locking rod (32).

Images