A pull rod brake for luggage and luggage

Abstract

The present invention discloses a pull rod brake for luggage and luggage. Among them, a limiting unit is used to be installed on the luggage wheel of the luggage. The pull rod assembly includes a gripping part and at least one telescopic part, and the telescopic part is connected to the gripping part. The telescopic part includes a first rod and a second rod, the gripping part is connected to the first rod, and the second rod is sleeved on the first rod. The brake assembly includes a rotating part, a flexible connecting member, a first connecting member, and a first clamping part. The rotating part is rotatably connected to the gripping part. The upper end of the flexible connecting member extends into the first rod and is connected to the rotating part, and the lower end of the flexible connecting member is connected to the first clamping part. The upper end of the first connecting member is inserted into the output end of the first clamping part, and the lower end of the first connecting member is connected to the limiting unit. When braking, the rotating part rotates and drives the flexible connecting member to move upward. The lower end of the flexible connecting member drives the first clamping part to clamp the first connecting member, and drives the first connecting member to move upward. The lower end of the first connecting member drives the limiting unit to limit the luggage wheel.

Description

Technical Field

[0001] The invention belongs to the technical field of luggage, and in particular relates to a pull rod brake for luggage and the luggage. Background Art

[0002] If the suitcase products currently on the market want to achieve the effect of using brakes, they need an additional control box and wheel brake assembly. By installing an additional control box, there is a handle on the control box to control the internal transmission mechanism, and the transmission mechanism is transmitted to the wheel assembly through a steel wire rope. The braking principle of the wheel assembly is basically the same. Through the movement of the pin connected to the steel wire, the pin slides into the groove set on the edge of the wheel, thereby limiting the rotation of the wheel and achieving the purpose of braking.

[0003] However, this control box and wheel brake assembly method takes up a lot of space inside the box and has high requirements for the installation position. Because the pull rod is retractable, the length of the pull rod is variable, so the wire rope cannot be set inside the pull rod and then connected to the wheel brake assembly, resulting in this control method cannot be integrated with the pull rod and can only take up the internal space of the bag. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a luggage pull rod brake and luggage, so as to solve the problem that the existing travel case brake occupies a large space.

[0005] To solve the above problems, the technical solution of the present invention is:

[0006] A luggage pull rod brake of the present invention comprises:

[0007] A limiting unit, the limiting unit is used to be installed on the bag wheels of the bag;

[0008] A pull rod assembly, comprising a gripping portion and at least one telescopic portion, wherein the telescopic portion is in communication with the gripping portion;

[0009] The telescopic portion includes a first rod and a second rod, the gripping portion is connected to the upper end of the first rod, and the second rod is sleeved on the lower end of the first rod;

[0010] A brake assembly, comprising a rotating part, a flexible connecting part, a first connecting part, and a first clamping part;

[0011] The rotating part is rotatably connected to the holding part; the upper end of the flexible connector extends into the inner cavity of the first rod and is connected to the output end of the rotating part, and the lower end of the flexible connector is connected to the input end of the first clamping part; the first connector is inserted into the inner cavity of the second rod, and the upper end of the first connector is inserted into the output end of the first clamping part and extends into the inner cavity of the first rod, and the lower end of the first connector is connected to the input end of the limiting unit;

[0012] When braking, the rotating part rotates and drives the flexible connecting member to move upward; the lower end of the flexible connecting member drives the first clamping part to clamp the first connecting member passing through the first clamping part, and further drives the first connecting member to move upward; the lower end of the first connecting member drives the limiting unit to limit the luggage wheel.

[0013] The luggage pull rod brake of the present invention, the first clamping part comprises a first clamping block, a first clamping piece, and a second clamping piece;

[0014] The first clamping block is arranged at the bottom of the first rod, and the first elastic protrusion is arranged on the outer side wall of the first clamping block; a first through groove connecting the upper and lower surfaces of the first clamping block is formed on the side wall of the first clamping block, and a first guide groove and a second guide groove opposite to each other are formed on the inner wall surface of the first through groove; the first guide groove and the second guide groove are arranged to be tightened upward;

[0015] The first clamping member is provided with a first guide block corresponding to the first guide groove, and the first guide block is slidably connected in the first guide groove;

[0016] The second clamping member is provided with a second guide block corresponding to the second guide groove, and the second guide block is slidably connected in the second guide groove;

[0017] The upper end of the first clamping member and the upper end of the second clamping member are both connected to the lower end of the flexible connecting member;

[0018] The first connecting member is disposed between the first clamping member and the second clamping member;

[0019] When braking, the flexible connecting member drives the first clamping member and the second clamping member to move upward, and under the guidance of the first guide groove and the second guide groove, the first clamping member and the second clamping member approach each other and clamp the first connecting member to move upward.

[0020] The luggage pull rod brake of the present invention comprises: the first clamping part further comprising a first elastic member and a second elastic member; the two ends of the first elastic member are respectively connected to the first clamping block and the first clamping member; the two ends of the second elastic member are respectively connected to the first clamping block and the second clamping member.

[0021] The luggage pull rod brake of the present invention further comprises a third rod, a second connecting member, and a second clamping member; the third rod is sleeved on the lower end of the second rod; the second clamping portion is arranged at the bottom of the second rod, and the input end of the second clamping portion is connected to the lower end of the first connecting member; the second connecting member is passed through the inner cavity of the third rod, and the upper end of the second connecting member is passed through the input end of the second clamping portion and extends into the inner cavity of the second rod, and the lower end of the second connecting member is connected to the input end of the limiting unit;

[0022] When braking, the lower end of the first connecting member drives the second clamping part to clamp the second connecting member passing through the second clamping part, and further drives the second connecting member to move upward; the lower end of the second connecting member drives the limiting unit to limit the luggage wheel.

[0023] The luggage pull rod brake of the present invention, the second clamping part includes a second clamping block, a third clamping piece, and a fourth clamping piece;

[0024] The second clamping block is arranged at the bottom of the second rod; a second through groove connecting the upper and lower surfaces of the second clamping block is formed on the side wall of the second clamping block, and a third guide groove and a fourth guide groove opposite to each other are formed on the inner wall surface of the second through groove; the third guide groove and the fourth guide groove are arranged to be tightened upward;

[0025] The third clamping member is provided with a third guide block corresponding to the third guide groove, and the third guide block is slidably connected in the third guide groove;

[0026] The fourth clamping member is provided with a fourth guide block corresponding to the fourth guide groove, and the fourth guide block is slidably connected in the fourth guide groove;

[0027] The upper end of the third clamping member and the upper end of the fourth clamping member are both connected to the lower end of the first connecting member;

[0028] The second connecting member is disposed between the third clamping member and the fourth clamping member;

[0029] When braking, the first connecting member drives the third clamping member and the fourth clamping member to move upward, and under the guidance of the third guide groove and the fourth guide groove, the third clamping member and the fourth clamping member approach each other and clamp the second connecting member to move upward.

[0030] The luggage pull rod brake of the present invention, the second clamping part also includes a third elastic member and a fourth elastic member; the two ends of the third elastic member are respectively connected to the second clamping block and the third clamping member; the two ends of the fourth elastic member are respectively connected to the second clamping block and the fourth clamping member.

[0031] The luggage pull rod brake of the present invention also includes a limiting portion and a limiting connecting piece;

[0032] The limiting part is arranged in the inner cavity of the holding part, and is used to output the unlocking action; a through hole adapted to the limiting part is opened on the holding part, and the input end of the limiting part extends out of the through hole; the upper end of the limiting connector is connected to the output end of the limiting part; the first clamping part is arranged at the bottom of the first rod, and a first elastic protrusion is arranged on the outer side wall of the first clamping part, and an opening corresponding to the first elastic protrusion is arranged at the upper end of the second rod;

[0033] When the brake is released, the limit portion outputs an unlocking action to drive the limit connection member to move downward, and the limit connection member drives the first clamping portion to move downward, and the first elastic protrusion of the first clamping portion is separated from the opening on the second rod.

[0034] The luggage pull rod brake of the present invention comprises: the first elastic protrusion includes a groove formed on the outer side wall of the first clamping portion, a fifth elastic member, a positioning pin, a slider and a vertical through hole connected to the groove; the first end of the positioning pin extends into the groove, the second end of the positioning pin extends out of the groove, and the positioning pin is provided with an inclined notch; the slider is provided in the vertical through hole, the upper end of the slider is connected to the limiting connecting member, and the lower end of the slider is provided with an inclined surface corresponding to the inclined notch, and the lower end of the slider extends into the inclined notch; the two ends of the fifth elastic member are respectively connected to the groove and the first end of the positioning pin.

[0035] The luggage pull rod brake of the present invention comprises a rotating part comprising a first semicircular tube and a second semicircular tube, wherein the first semicircular tube and the second semicircular tube are both sleeved on the outer surface of the gripping part and are snap-fitted to form a circular tube; the upper end of the flexible connector is connected to the circular tube; the first semicircular tube and the second semicircular tube are respectively provided with through holes adapted to the limiting part, so as to allow the input end of the limiting part to extend;

[0036] When braking, the circular tube rotates, and the limiting portion rotates from the through hole extending from the first semicircular tube to the through hole extending from the second semicircular tube, and drives the flexible connecting piece to move upward.

[0037] The luggage pull rod brake of the present invention comprises a plurality of limiting grooves and a limiting swing arm arranged around the side of the luggage wheel; the limiting swing arm is rotatably connected to the luggage wheel, the first end of the limiting swing arm is connected to the lower end of the first connecting member, and the second end of the limiting swing arm is provided with a clamping block corresponding to the limiting groove;

[0038] When braking, the lower end of the first connecting member drives the first end of the limiting swing arm to move upward, and the second end of the limiting swing arm moves downward, and the clamping block is inserted into the corresponding limiting groove to limit the luggage wheel.

[0039] A bag of the present invention is equipped with any one of the above-mentioned pull rod brakes for bags.

[0040] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0041] 1. In one embodiment of the present invention, a telescopic part with a gripping part, a first rod and a second rod is provided on the luggage, a rotating part connected to a rotation is provided on the gripping part, a first clamping part is provided at the bottom of the first rod, and a flexible connecting part is provided in the inner cavity of the first rod to connect the output end of the rotating part with the input end of the first clamping part; a first connecting part is also provided in the inner cavity of the second rod, and the upper end of the first connecting part is passed through the first clamping part, and the lower end is connected to the limiting unit provided on the luggage wheel. When braking, the rotating part rotates and drives the flexible connecting part to move upward; the lower end of the flexible connecting part drives the first clamping part to clamp the first connecting part passed through the first clamping part, and further the first connecting part moves upward; the lower end of the first connecting part drives the limiting unit to limit the luggage wheel. By setting a first clamping part at the bottom of the first rod, the flexible connection part in the first rod transmits the output action of the rotating part to the first clamping part, so that the first clamping part clamps the first connection part set in the second rod and drives the first connection part, and then transmits the output action to the limiting unit of the luggage wheel through the first connection part to complete the limiting of the luggage wheel. The transmission structure of the luggage brake is integrated on the telescopic part to avoid occupying the internal space of the luggage.

[0042] 2. By dividing the transmission part of the brake assembly on each rod of the telescopic part, the transmission between the first rod and the second rod is achieved by setting the first clamping part. Regardless of whether the first rod is in an extended state relative to the second rod, by rotating the rotating part, the flexible connecting part will drive the first clamping part to the position of the first connecting part that is now inserted into the first clamping part, and drive the first connecting part to move upward, thereby driving the limiting unit to limit the luggage wheel, thereby solving the problem that the traditional brake control method cannot be applied to the telescopic rod due to the change in the length of the telescopic rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the luggage pull rod brake of the present invention;

[0044] Figure 2 Another schematic diagram of the luggage pull rod brake of the present invention;

[0045] Figure 3 A schematic diagram of a first clamping portion of a luggage pull rod brake of the present invention;

[0046] Figure 4 An exploded view of the first clamping portion of the luggage pull rod brake of the present invention;

[0047] Figure 5 A schematic diagram of a first elastic protrusion of a luggage pull rod brake of the present invention;

[0048] Figure 6 An exploded view of the gripping portion of the luggage pull rod brake of the present invention;

[0049] Figure 7 It is a schematic diagram of a limiting unit of a luggage pull rod brake according to the present invention.

[0050] Explanation of the reference numerals: 1: telescopic portion; 101: gripping portion; 102: first rod; 103: second rod; 104: third rod; 2: limiting unit; 201: limiting groove; 202: limiting swing arm; 3: brake assembly; 4: rotating portion; 401: first semicircular tube; 402: second semicircular tube; 5: flexible connector; 6: first connector; 7: first clamping portion; 701: first clamping block; 702: first clamping member; 703: second clamping member; 704: first elastic member; 705: second elastic member; 706: sliding block; 707: positioning pin; 708: fifth elastic member; 8: limiting connector; 9: limiting portion; 10: second clamping portion; 11: second connector. DETAILED DESCRIPTION

[0051] The advantages and features of the present invention will become more apparent from the following description and claims.

[0052] Embodiment 1

[0053] See also Figure 1 In one embodiment, a luggage pull rod brake includes a limit unit 2, a pull rod assembly and a brake assembly 3. The limit unit 2 is used to be installed on the luggage wheel of the luggage. The pull rod assembly includes a gripping portion 101 and at least one telescopic portion 1, and the telescopic portion 1 is connected to the gripping portion 101. The telescopic portion 1 includes a first rod 102 and a second rod 103, the gripping portion 101 is connected to the upper end of the first rod 102, and the second rod 103 is sleeved on the lower end of the first rod 102.

[0054] The brake assembly 3 includes a rotating part 4, a flexible connector 5, a first connector 6, and a first clamping part 7. The rotating part 4 is rotatably connected to the gripping part 101. The upper end of the flexible connector 5 extends into the inner cavity of the first rod 102 and is connected to the output end of the rotating part 4, and the lower end of the flexible connector 5 is connected to the input end of the first clamping part 7. The first connector 6 is arranged in the inner cavity of the second rod 103, and the upper end of the first connector 6 is arranged in the output end of the first clamping part 7 and extends into the inner cavity of the first rod 102, and the lower end of the first connector 6 is connected to the input end of the limiting unit 2.

[0055] When braking, the rotating part 4 rotates and drives the flexible connecting member 5 to move upward. The lower end of the flexible connecting member 5 drives the first clamping part 7 to clamp the first connecting member 6 passing through the first clamping part 7, and further drives the first connecting member 6 to move upward. The lower end of the first connecting member 6 drives the limiting unit 2 to limit the luggage wheel.

[0056] A telescopic part 1 with a gripping part 101, a first rod 102 and a second rod 103 is provided on the bag, a rotating part 4 connected in rotation is provided on the gripping part 101, a first clamping part 7 is provided at the bottom of the first rod 102, and a flexible connecting part is provided in the inner cavity of the first rod 102 to connect the output end of the rotating part 4 with the input end of the first clamping part 7. A first connecting part is also provided in the inner cavity of the second rod 103, and the upper end of the first connecting part is penetrated through the first clamping part 7, and the lower end is connected to the limiting unit 2 provided on the bag wheel. When braking, the rotating part 4 rotates and drives the flexible connecting member 5 to move upward. The lower end of the flexible connecting member 5 drives the first clamping part 7 to clamp the first connecting member 6 penetrated through the first clamping part 7, and further the first connecting member 6 moves upward. The lower end of the first connecting member 6 drives the limiting unit 2 to limit the bag wheel. By setting the first clamping part 7 at the bottom of the first rod 102, the flexible connection part in the first rod 102 transmits the output action of the rotating part 4 to the first clamping part 7, so that the first clamping part 7 clamps the first connection part set in the second rod 103 and drives the first connection part, and then transmits the output action to the limiting unit 2 of the luggage wheel through the first connection part to complete the limiting of the luggage wheel. The transmission structure of the luggage brake is integrated on the telescopic part 1, avoiding the occupation of the internal space of the luggage.

[0057] At the same time, by dividing the transmission part of the brake assembly 3 on each rod of the telescopic part 1, the transmission between the first rod 102 and the second rod 103 is achieved by setting the first clamping part 7. Regardless of whether the first rod 102 is in an extended state relative to the second rod 103, by rotating the rotating part 4, the flexible connecting part will drive the first clamping part 7 to the position of the first connecting part that is now inserted into the first clamping part 7, and drive the first connecting part to move upward, thereby driving the limiting unit 2 to limit the luggage wheel, thereby solving the problem that the traditional brake control method cannot be applied to the telescopic rod due to the change in the length of the telescopic rod.

[0058] In this embodiment, the first clamping portion 7 includes a first clamping block 701, a first clamping member 702, and a second clamping member 703. The first clamping block 701 is arranged at the bottom of the first rod 102, and the first elastic protrusion is arranged on the outer wall of the first clamping block 701. A first through groove connecting the upper and lower surfaces of the first clamping block 701 is provided on the side wall of the first clamping block 701, and a first guide groove and a second guide groove are provided on the inner wall surface of the first through groove. The first guide groove and the second guide groove are arranged to be tightened upward, and the first guide groove and the second guide groove respectively include a tightening section and a vertical section from bottom to top, and the guide groove of the tightening section gradually approaches from bottom to top, while the distance between the vertical sections of the two guide grooves remains unchanged.

[0059] The first clamping member 702 is provided with a first guide block corresponding to the first guide groove, and the first guide block is slidably connected to the first guide groove. The second clamping member 703 is provided with a second guide block corresponding to the second guide groove, and the second guide block is slidably connected to the second guide groove. The upper end of the first clamping member 702 and the upper end of the second clamping member 703 are both connected to the lower end of the flexible connecting member 5. And the first connecting member 6 is inserted between the first clamping member 702 and the second clamping member 703.

[0060] During braking, the flexible connector 5 drives the first clamping member 702 and the second clamping member 703 to move upward. Under the guidance of the first guide groove and the second guide groove, the first clamping member 702 and the second clamping member 703 approach each other and clamp the first connector 6 in the tightening section, and drive the clamped first connector 6 to move upward in the vertical section.

[0061] In this embodiment, the first clamping portion 7 further includes a first elastic member 704 and a second elastic member 705. The two ends of the first elastic member 704 are respectively connected to the first clamping block 701 and the first clamping member 702. The two ends of the second elastic member 705 are respectively connected to the first clamping block 701 and the second clamping member 703. The first elastic member 704 and the second elastic member 705 are used to provide the elastic force required for the first clamping member 702 and the second clamping member 703 to reset, so that the first elastic member 704 and the second elastic member 705 can have enough elastic force to return to the initial position after being lifted to the upper end of the corresponding guide groove. The first elastic member 704 and the second elastic member 705 can be other elastic elements such as springs or rubbers, which are not specifically limited here.

[0062] In this embodiment, a limiting portion 9 and a limiting connector 8 are also included. The limiting portion 9 is arranged in the inner cavity of the grip portion 101 and is used to output the unlocking action. A through hole adapted to the limiting portion 9 is opened on the grip portion 101, and the input end of the limiting portion 9 extends out of the through hole. The upper end of the limiting connector 8 is connected to the output end of the limiting portion 9. The first clamping portion 7 is arranged at the bottom of the first rod 102, and a first elastic protrusion is arranged on the outer wall of the first clamping portion 7, and an opening corresponding to the first elastic protrusion is arranged at the upper end of the second rod 103. The limiting portion 9 and the limiting connector 8 are arranged to limit the telescopic portion 1 after extension, so that the relative position of the first rod 102 and the second rod 103 remains unchanged in the extended state. When the relative position of the first rod 102 and the second rod 103 moves to the longest position, the first elastic protrusion at the bottom of the first rod 102 will be stuck in the opening at the upper end of the second rod 103, so as to limit the relative position of the first rod 102 and the second rod 103. The limiting portion 9 can specifically be a combination of a push button and an elastic member, that is, the push button is installed in the inner cavity of the grip portion 101, the limiting connector 8 is connected to the push button, an opening for extending the push button is opened on the grip portion 101, and the grip portion 101 and the push button are connected or limited by an elastic member, so that the push button can be reset by the elastic force of the elastic member after being pressed down.

[0063] When the brake is released, the limit part 9 outputs an unlocking action to drive the limit connection member 8 to move downward, and the limit connection member 8 drives the first clamping part 7 to move downward, and the first elastic protrusion of the first clamping part 7 is separated from the opening on the second rod 103.

[0064] In this embodiment, the first elastic protrusion includes a groove provided on the outer wall of the first clamping portion 7, a fifth elastic member 708, a positioning pin 707, a slider 706 and a vertical through hole connected to the groove. That is, the groove and the vertical through hole cooperate to form an L-shaped through hole. The first end of the positioning pin 707 extends into the groove, the second end of the positioning pin 707 extends out of the groove, and the positioning pin 707 is provided with an inclined notch; the slider 706 is provided in the vertical through hole, the upper end of the slider 706 is connected to the limiting connecting member 8, and the lower end of the slider 706 is provided with an inclined surface corresponding to the inclined surface notch, and the lower end of the slider 706 extends into the inclined surface notch; the two ends of the fifth elastic member 708 are respectively connected to the groove and the first end of the positioning pin 707. When the limiting connecting member 8 moves downward to drive the slider 706 to move downward, the inclined surface at the lower end of the slider 706 contacts the inclined surface notch on the positioning pin 707, and drives the positioning pin 707 to disengage from the opening of the second rod 103. The fifth elastic member 708 may be a spring, rubber or other elastic element, which is not specifically limited here.

[0065] In other embodiments, the slider 706 and the vertical through hole may not be provided, and an inclined surface may be provided at the second end of the positioning pin 707 to disengage the positioning pin 707 from the opening of the second rod 103. When the relative position of the first rod 102 and the second rod 103 moves to the longest position, the second end of the positioning pin 707 extends into the opening of the second rod 103 to limit the relative position of the first rod 102 and the second rod 103. When the telescopic part 1 contracts, the first connecting member 6 presses down the first clamping part 7, and the positioning pin 707 on the first clamping part 7 disengages from the opening of the second rod 103 under the action of the inclined surface, and at this time, the first rod 102 and the second rod 103 can slide freely relative to each other.

[0066] In this embodiment, the rotating part 4 includes a first semicircular tube 401 and a second semicircular tube 402, which are both sleeved on the outer surface of the gripping part 101 and snap-fitted to form a round tube. The upper end of the flexible connector 5 is connected to the round tube, that is, the flexible connector 5 can be connected to any one of the first semicircular tube 401 and the second semicircular tube 402, and a connecting protrusion can be set on the first semicircular tube 401 or the second semicircular tube 402, and the upper end of the flexible connector can be connected to the connecting protrusion. The first semicircular tube 401 and the second semicircular tube 402 are respectively provided with through holes adapted to the limiting part 9, which are used to extend the input end of the limiting part 9. The through holes are respectively provided on the two semicircular tubes in order to limit the position of the first semicircular tube 401 and the second semicircular tube 402 relative to the gripping part 101 through the limiting part 9, and to limit the rotation angle of the rotating part 4. When the rotating part 4 rotates until the limiting part 9 extends out of the first semicircular tube 401, it is in a braking state; when it rotates until it extends out of the second semicircular tube 402, it is in an unbraking state.

[0067] When braking, the circular tube rotates, and the limiting portion 9 rotates from the through hole extending from the first semicircular tube 401 to the through hole extending from the second semicircular tube 402, and drives the flexible connecting member 5 to move upward.

[0068] In this embodiment, the limiting unit 2 includes a plurality of limiting grooves 201 and a limiting swing arm 202 arranged around the side of the luggage wheel. The limiting swing arm 202 is rotatably connected to the luggage wheel, the first end of the limiting swing arm 202 is connected to the lower end of the first connecting member 6, and the second end of the limiting swing arm 202 is provided with a clamping block corresponding to the limiting groove 201. That is, after the first end of the limiting swing arm 202 is lifted by means of a lever, the second end of the limiting swing arm 202 is pressed down so that the clamping block is clamped into the limiting groove 201.

[0069] When braking, the lower end of the first connecting member 6 drives the first end of the limiting swing arm 202 to move upward, and the second end of the limiting swing arm 202 moves downward, and the clamping block is inserted into the corresponding limiting groove 201 to limit the luggage wheel.

[0070] In this embodiment, the flexible connector 5 can be a steel wire rope or other flexible ropes with sufficient strength. The first connector 6 and the position-limiting connector 8 can be hard steel wires or rods made of other materials with sufficient strength.

[0071] Embodiment 2

[0072] This embodiment further supplements the telescopic part 1 and the brake assembly 3 on the basis of the first embodiment.

[0073] In this embodiment, the telescopic part 1 of the luggage pull rod brake may further include a third rod 104, and the brake assembly 3 may further include a second connecting member 11 and a second clamping member 703. The third rod 104 is sleeved on the lower end of the second rod 103. The second clamping member 10 is provided at the bottom of the second rod 103, and the input end of the second clamping member 10 is connected to the lower end of the first connecting member 6. The second connecting member 11 is provided in the inner cavity of the third rod 104, and the upper end of the second connecting member 11 is provided in the input end of the second clamping member 10 and extends into the inner cavity of the second rod 103, and the lower end of the second connecting member 11 is connected to the input end of the limiting unit 2.

[0074] When braking, the lower end of the first connecting member 6 drives the second clamping part 10 to clamp the second connecting member 11 passing through the second clamping part 10, and further drives the second connecting member 11 to move upward. The lower end of the second connecting member 11 drives the limiting unit 2 to limit the luggage wheel.

[0075] In this embodiment, the second clamping part 10 includes a second clamping block, a third clamping member, and a fourth clamping member. The second clamping block is arranged at the bottom of the second rod 103. A second through groove connecting the upper and lower surfaces of the second clamping block is provided on the side wall of the second clamping block, and a third guide groove and a fourth guide groove are provided on the inner wall surface of the second through groove. The third guide groove and the fourth guide groove are arranged to tighten upward, and the third guide groove and the fourth guide groove respectively include a tightening section and a vertical section from bottom to top, and the guide groove of the tightening section gradually approaches from bottom to top, while the distance between the vertical sections of the two guide grooves remains unchanged.

[0076] The third clamping member is provided with a third guide block corresponding to the third guide groove, and the third guide block is slidably connected in the third guide groove. The fourth clamping member is provided with a fourth guide block corresponding to the fourth guide groove, and the fourth guide block is slidably connected in the fourth guide groove. The upper end of the third clamping member and the upper end of the fourth clamping member are both connected to the lower end of the first connecting member 6. And the second connecting member 11 is inserted between the third clamping member and the fourth clamping member.

[0077] During braking, the first connecting member 6 drives the third clamping member and the fourth clamping member to move upwards. Under the guidance of the third guide groove and the fourth guide groove, the third clamping member and the fourth clamping member approach each other and clamp the second connecting member 11 to move upwards.

[0078] In the present embodiment, the second clamping portion 10 further includes a third elastic member and a fourth elastic member. The two ends of the third elastic member are respectively connected to the second clamping block and the third clamping member. The two ends of the fourth elastic member are respectively connected to the second clamping block and the fourth clamping member. The third elastic member and the second elastic member 705 are used to provide the elastic force required for the third clamping member and the fourth clamping member to reset, so that the third elastic member and the fourth elastic member can have enough elastic force to return to the initial position after being lifted to the upper end of the corresponding guide groove. The third elastic member and the fourth elastic member can be other elastic elements such as springs or rubbers, which are not specifically limited here.

[0079] In this embodiment, a second elastic protrusion may be provided on the outer side wall of the second clamping portion 10, and an opening corresponding to the second elastic protrusion is provided on the upper end of the third rod 104. When the relative position of the second rod 103 and the third rod 104 moves to the longest position, the second elastic protrusion at the bottom of the second rod 103 will be inserted into the opening at the upper end of the third rod 104, thereby limiting the relative position of the second rod 103 and the third rod 104.

[0080] When the brake is released, the limit part 9 outputs an unlocking action to drive the limit connecting piece 8 to move downward, and the limit connecting piece 8 drives the first clamping part 7 to move downward, and the first elastic protrusion of the first clamping part 7 disengages from the opening on the second rod 103; further, the second connecting piece 11 connected to the first clamping part 7 moves downward, driving the second clamping part 10 to move downward, and the second elastic protrusion of the second clamping part 10 disengages from the opening on the third rod 104.

[0081] In this embodiment, the second elastic protrusion includes a groove provided on the outer wall of the second clamping portion 10, a sixth elastic member, and a positioning pin 707. The first end of the positioning pin 707 extends into the groove, the second end of the positioning pin 707 extends out of the groove, and the two ends of the sixth elastic member are respectively connected to the groove and the first end of the positioning pin 707. The second end of the positioning pin 707 is also provided with an inclined surface for disengaging the positioning pin 707 from the opening of the third rod 104. The sixth elastic member can be other elastic elements such as a spring or rubber, which is not specifically limited here. When the relative position of the second rod 103 and the third rod 104 moves to the longest position, the second end of the positioning pin 707 extends into the opening of the third rod 104 to limit the relative position of the second rod 103 and the third rod 104. When the telescopic part 1 contracts, the second connecting member 11 presses down the second clamping part 10, and the positioning pin 707 on the second clamping part 10 is separated from the opening of the third rod 104 by the action of the inclined surface. At this time, the second rod 103 and the third rod 104 can slide freely relative to each other.

[0082] In this embodiment, the second connecting member 11 may be a hard steel wire or a rod made of other materials with sufficient strength.

[0083] Embodiment 3

[0084] A luggage is provided with a luggage pull rod brake of any one of the above-mentioned embodiments 1 or 2. By setting a first clamping portion 7 at the bottom of a first rod 102, the flexible connection portion in the first rod 102 transmits the output action of the rotating portion 4 to the first clamping portion 7, so that the first clamping portion 7 clamps the first connection portion set in the second rod 103 and drives the first connection portion, and then transmits the output action to the limiting unit 2 of the luggage wheel through the first connection portion to complete the limiting of the luggage wheel. The transmission structure of the luggage brake is integrated into the telescopic portion 1, avoiding the occupation of the internal space of the luggage.

[0085] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they still fall within the protection scope of the present invention.

Claims

1. A luggage pull rod brake, characterized in that: include: A limiting unit, the limiting unit is used to be installed on the bag wheels of the bag; A pull rod assembly, comprising a gripping portion and at least one telescopic portion, wherein the telescopic portion is in communication with the gripping portion; The telescopic portion includes a first rod and a second rod, the gripping portion is connected to the upper end of the first rod, and the second rod is sleeved on the lower end of the first rod; A brake assembly, comprising a rotating part, a flexible connecting part, a first connecting part, and a first clamping part; The rotating part is rotatably connected to the holding part; the upper end of the flexible connector extends into the inner cavity of the first rod and is connected to the output end of the rotating part, and the lower end of the flexible connector is connected to the input end of the first clamping part; the first connector is inserted into the inner cavity of the second rod, and the upper end of the first connector is inserted into the output end of the first clamping part and extends into the inner cavity of the first rod, and the lower end of the first connector is connected to the input end of the limiting unit; the first clamping part is arranged at the bottom of the first rod; the first connector is a hard steel wire or a hard rod; When braking, the rotating part rotates and drives the flexible connecting member to move upward; the lower end of the flexible connecting member drives the first clamping part to clamp the first connecting member passing through the first clamping part, and further drives the first connecting member to move upward; the lower end of the first connecting member drives the limiting unit to limit the luggage wheel.

2. The luggage drawbar brake according to claim 1, characterized in that: The first clamping portion includes a first clamping block, a first clamping member, and a second clamping member; The first clamping block is arranged at the bottom of the first rod, and the first elastic protrusion is arranged on the outer side wall of the first clamping block; a first through groove connecting the upper and lower surfaces of the first clamping block is formed on the side wall of the first clamping block, and a first guide groove and a second guide groove opposite to each other are formed on the inner wall surface of the first through groove; the first guide groove and the second guide groove are arranged to be tightened upward; The first clamping member is provided with a first guide block corresponding to the first guide groove, and the first guide block is slidably connected in the first guide groove; The second clamping member is provided with a second guide block corresponding to the second guide groove, and the second guide block is slidably connected in the second guide groove; The upper end of the first clamping member and the upper end of the second clamping member are both connected to the lower end of the flexible connecting member; The first connecting member is disposed between the first clamping member and the second clamping member; When braking, the flexible connecting member drives the first clamping member and the second clamping member to move upward, and under the guidance of the first guide groove and the second guide groove, the first clamping member and the second clamping member approach each other and clamp the first connecting member to move upward.

3. The luggage drawbar brake according to claim 2, characterized in that: The first clamping portion further includes a first elastic member and a second elastic member; two ends of the first elastic member are respectively connected to the first clamping block and the first clamping member; two ends of the second elastic member are respectively connected to the first clamping block and the second clamping member.

4. The luggage drawbar brake according to claim 1, characterized in that: It also includes a third rod, a second connecting member, and a second clamping portion; the third rod is sleeved on the lower end of the second rod; the second clamping portion is arranged at the bottom of the second rod, and the input end of the second clamping portion is connected to the lower end of the first connecting member; the second connecting member is inserted into the inner cavity of the third rod, and the upper end of the second connecting member is inserted into the input end of the second clamping portion and extends into the inner cavity of the second rod, and the lower end of the second connecting member is connected to the input end of the limiting unit; When braking, the lower end of the first connecting member drives the second clamping part to clamp the second connecting member passing through the second clamping part, and further drives the second connecting member to move upward; the lower end of the second connecting member drives the limiting unit to limit the luggage wheel.

5. The luggage drawbar brake according to claim 4, characterized in that: The second clamping part includes a second clamping block, a third clamping piece, and a fourth clamping piece; The second clamping block is arranged at the bottom of the second rod; a second through groove connecting the upper and lower surfaces of the second clamping block is formed on the side wall of the second clamping block, and a third guide groove and a fourth guide groove opposite to each other are formed on the inner wall surface of the second through groove; the third guide groove and the fourth guide groove are arranged to be tightened upward; The third clamping member is provided with a third guide block corresponding to the third guide groove, and the third guide block is slidably connected in the third guide groove; The fourth clamping member is provided with a fourth guide block corresponding to the fourth guide groove, and the fourth guide block is slidably connected in the fourth guide groove; The upper end of the third clamping member and the upper end of the fourth clamping member are both connected to the lower end of the first connecting member; The second connecting member is disposed between the third clamping member and the fourth clamping member; When braking, the first connecting member drives the third clamping member and the fourth clamping member to move upward, and under the guidance of the third guide groove and the fourth guide groove, the third clamping member and the fourth clamping member approach each other and clamp the second connecting member to move upward.

6. The luggage drawbar brake according to claim 5, characterized in that: The second clamping portion further includes a third elastic member and a fourth elastic member; two ends of the third elastic member are respectively connected to the second clamping block and the third clamping member; two ends of the fourth elastic member are respectively connected to the second clamping block and the fourth clamping member.

7. The luggage drawbar brake according to claim 1, characterized in that: It also includes a limiting part and a limiting connecting piece; The limiting part is arranged in the inner cavity of the holding part, and is used to output the unlocking action; a through hole adapted to the limiting part is opened on the holding part, and the input end of the limiting part extends out of the through hole; the upper end of the limiting connector is connected to the output end of the limiting part; the first clamping part is arranged at the bottom of the first rod, and a first elastic protrusion is arranged on the outer side wall of the first clamping part, and an opening corresponding to the first elastic protrusion is arranged at the upper end of the second rod; When the brake is released, the limit portion outputs an unlocking action to drive the limit connection member to move downward, and the limit connection member drives the first clamping portion to move downward, and the first elastic protrusion of the first clamping portion is separated from the opening on the second rod.

8. The luggage drawbar brake according to claim 7, characterized in that: The first elastic protrusion includes a groove opened on the outer side wall of the first clamping portion, a fifth elastic member, a positioning pin, a slider and a vertical through hole connected to the groove; the first end of the positioning pin extends into the groove, the second end of the positioning pin extends out of the groove, and the positioning pin is provided with an inclined notch; the slider is arranged in the vertical through hole, the upper end of the slider is connected to the limiting connecting member, and the lower end of the slider is provided with an inclined surface corresponding to the inclined notch, and the lower end of the slider extends into the inclined notch; the two ends of the fifth elastic member are respectively connected to the groove and the first end of the positioning pin.

9. The luggage drawbar brake according to claim 7, characterized in that: The rotating part comprises a first semicircular tube and a second semicircular tube, the first semicircular tube and the second semicircular tube are both sleeved on the outer surface of the gripping part and snap-fitted to form a circular tube; the upper end of the flexible connector is connected to the circular tube; the first semicircular tube and the second semicircular tube are respectively provided with through holes adapted to the limiting part, so as to allow the input end of the limiting part to extend out; When braking, the circular tube rotates, and the limiting portion rotates from the through hole extending from the first semicircular tube to the through hole extending from the second semicircular tube, and drives the flexible connecting piece to move upward.

10. The luggage drawbar brake according to claim 1, characterized in that: The limiting unit includes a plurality of limiting grooves and a limiting swing arm arranged around the side of the luggage wheel; the limiting swing arm is rotatably connected to the luggage wheel, the first end of the limiting swing arm is connected to the lower end of the first connecting member, and the second end of the limiting swing arm is provided with a clamping block corresponding to the limiting groove; When braking, the lower end of the first connecting member drives the first end of the limiting swing arm to move upward, and the second end of the limiting swing arm moves downward, and the clamping block is inserted into the corresponding limiting groove to limit the luggage wheel.

11. A bag, characterized in that: A luggage drawbar brake as described in any one of claims 1 to 10 is installed.

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