WO2021147694A1 - 推车的拉手组件及具有其的推车 - Google Patents

推车的拉手组件及具有其的推车 Download PDF

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Publication number
WO2021147694A1
WO2021147694A1 PCT/CN2021/071006 CN2021071006W WO2021147694A1 WO 2021147694 A1 WO2021147694 A1 WO 2021147694A1 CN 2021071006 W CN2021071006 W CN 2021071006W WO 2021147694 A1 WO2021147694 A1 WO 2021147694A1
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WO
WIPO (PCT)
Prior art keywords
handle
positioning
cart
pivoting
handle assembly
Prior art date
Application number
PCT/CN2021/071006
Other languages
English (en)
French (fr)
Inventor
胡杰
骆振权
凯文斯•迈克尔
Original Assignee
东莞金旺儿童用品有限公司
婴童潮流有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 东莞金旺儿童用品有限公司, 婴童潮流有限公司 filed Critical 东莞金旺儿童用品有限公司
Publication of WO2021147694A1 publication Critical patent/WO2021147694A1/zh
Priority to US17/682,699 priority Critical patent/US20220297736A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/06—Hand moving equipment, e.g. handle bars
    • B62B5/064—Hand moving equipment, e.g. handle bars adaptable for different users, e.g. by means of pivoting elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/02—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving parts being adjustable, collapsible, attachable, detachable or convertible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/06—Hand moving equipment, e.g. handle bars
    • B62B5/067—Stowable or retractable handle bars

Definitions

  • the utility model relates to the technical field of carts, in particular to a handle assembly of a cart and a cart having the same.
  • a frame and a handle assembly are often provided.
  • the handle assembly is located on the upper part of the frame, which takes up a lot of space and is inconvenient for users to work.
  • the utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, the present invention proposes a handle assembly of a cart, which is convenient for users to work and reduces the space occupied by the cart.
  • the utility model also aims to provide a cart with the above-mentioned handle assembly.
  • the cart includes a frame, and the handle assembly includes a sliding rail, which extends along the traveling direction of the frame and is arranged on the frame The lower part; the slider, the slider is slidably arranged on the slide rail; the handle, the handle is movable between the storage position and the pulled out position stored in the lower part of the frame, wherein the handle includes A rod portion and a handle portion, the handle portion is provided at a first end of the rod portion, and the second end of the rod portion is pivotally connected to the slider.
  • the handle is configured to be movable between the storage position and the pulled-out position stored in the lower part of the frame.
  • the trolley can be made smaller, the space occupied by the trolley can be reduced, the operation of the user is facilitated, and the obstacle of the handle can be reduced.
  • the handle is in the storage position, which is convenient for the infants to ride and the user to interact with the infants.
  • the cart is used to carry goods and the handle is in the storage position.
  • the cart occupies a small space and is convenient for storage, and the handle will not block the user's handling, and the handling of the goods is more convenient.
  • the handle can facilitate the user to pull the cart, which is beneficial to control the direction of the cart, and makes the cart travel safer.
  • the handle assembly of the stroller further includes a positioning assembly, the positioning assembly is arranged between the slider and the rod, so that the rod is different from the slider. Positioning on the pivot angle.
  • the positioning assembly includes: a first pivoting portion, the first pivoting portion is provided on the slider and internally defines a first pivoting groove, and a bottom wall of the first pivoting groove is provided There is a first mating tooth; a second pivoting portion, the second pivoting portion is provided on the second end of the rod portion, the second pivoting portion and the first pivoting portion can be opposite Rotating connection; locking gear, one end of the locking gear is provided with a second matching tooth, the first matching tooth and the second matching tooth can mesh with each other; the first elastic member, the first elastic member It is used to apply a pretension force to the lock gear toward the first mating tooth.
  • first matching teeth and the second matching teeth protrude toward each other, and both the first matching teeth and the second matching teeth are formed in an annular gear ring structure.
  • the second pivoting portion may be sleeved outside the first pivoting portion, a second pivoting groove is defined in the second pivoting portion, and the locking gear One end of the remote from the second mating tooth is fixedly connected to the second pivot groove.
  • the second pivoting groove is provided with a central mounting post, a sleeve hole is provided on the locking gear, and the sleeve hole is sleeved on the central installation post; a plurality of positioning ribs, a plurality of The positioning ribs are arranged radially around the circumference of the central mounting column, and the locking gear is provided with a plurality of positioning side plates extending toward the positioning ribs, and a boundary between two adjacent positioning side plates is defined A positioning groove is formed, and a plurality of the positioning ribs are fitted in the plurality of positioning grooves one by one.
  • At least one of the positioning side plates is provided with a stepped groove
  • at least one positioning block is provided on the peripheral wall of the second pivoting groove, and the stepped groove is positioned in cooperation with the positioning block.
  • the second pivoting portion is mounted on the second end of the rod portion through a sleeve, and the sleeve and the second pivoting portion are integrally formed.
  • the rod portion includes two, and the two rod portions are spaced apart from each other and arranged on the handle portion, and the positioning assembly includes two and is respectively used to connect the two rod portions. On the slider.
  • the frame further includes a cross bar, the cross bar and the slide rail are perpendicular to each other, a placement portion is provided on the cross bar, and when the handle is in the storage position, the handle The part is supported on the placement part.
  • the placement portion is formed in a hook-like structure, and the placement portion includes two and is spaced apart along the length direction of the cross bar.
  • the handle assembly of the stroller further includes a locking structure provided in the handle portion and when the handle is located in the storage position, the locking structure and the The placement part cooperates to limit the freedom of movement of the handle.
  • the handle portion defines an accommodating cavity
  • the locking structure includes: a main body portion provided in the accommodating cavity, and the main body portion is movable in the accommodating cavity; a button portion , The button part is connected to the main body part, the button part extends out of the accommodating cavity; a hook part, the hook part is connected to the main body part, the handle part is provided with a through hole , When the main body part moves in the containing cavity, the hook part can be extended or retracted into the containing cavity through the through hole; a second elastic member, the second elastic member is arranged in the The accommodating cavity is used to apply a pre-tightening force to the main body to cause the hook portion to extend out of the accommodating cavity.
  • the locking structure further includes an abutting portion connected to the main body portion, and two ends of the second elastic member are respectively abutting against the abutting portion and the accommodating cavity Between the inner walls.
  • the cart according to the embodiment of the present utility model includes the handle assembly of the cart according to the foregoing embodiment of the present utility model.
  • the handle is set to be movable between the storage position stored in the lower part of the frame and the pulled-out position.
  • the trolley can be made smaller, the space occupied by the trolley can be reduced, the operation of the user is facilitated, and the obstacle of the handle can be reduced.
  • the handle is in the storage position, which is convenient for the infants and young children to ride and the user to interact with the infants and young children.
  • the cart is used to carry goods and the handle is in the storage position.
  • the cart occupies a small space and is convenient for storage, and the handle will not block the user's handling, and the handling of the goods is more convenient.
  • the handle can facilitate the user to pull the cart, which is beneficial to control the direction of the cart, and makes the cart travel safer.
  • Figure 1 is a schematic diagram of part of the structure of the cart in the embodiment of the utility model (including the frame and the handle assembly);
  • Figure 2 is a partial structural diagram of the handle assembly in the embodiment of the utility model (including the slider, the handle and the positioning assembly);
  • Figure 3 is an exploded view of the structure shown in Figure 2;
  • Figure 4 is an exploded view of a part of the structure of the handle assembly in the embodiment of the utility model (including the slider and the positioning assembly);
  • Figure 5 is a schematic view of the structure of the sliding rail and the frame in the embodiment of the utility model
  • Figure 6 is an exploded view of part of the structure of the handle assembly in the embodiment of the utility model (including the handle and the locking structure);
  • Figure 7 is a schematic diagram of the structure of the cart in the embodiment of the utility model.
  • Handle 3 lever portion 31, handle portion 32, accommodating cavity 321,
  • Positioning assembly 4 first pivoting portion 41, first pivoting groove 411, first matching tooth 412, second pivoting portion 42, second pivoting groove 421, central mounting post 422, positioning rib 423, positioning block 424 , Locking gear 43, second matching tooth 431, sleeve hole 432, positioning side plate 433, step groove 4331, positioning groove 434, first elastic member 44, sleeve 45,
  • Locking structure 5 main body portion 51, button portion 52, hook portion 53, second elastic member 54, abutment portion 55,
  • the frame 200 The frame 200, the cross bar 201, and the placement portion 202.
  • connection should be understood in a broad sense.
  • it can be a fixed connection or an optional connection.
  • Detachable connection, or integral connection it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • connection can be a fixed connection or an optional connection.
  • Detachable connection, or integral connection it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • the specific meaning of the above-mentioned terms in the present utility model can be understood under specific circumstances.
  • the cart 1000 includes a frame 200, and the handle assembly 100 includes a slide rail 1, a handle 3 and a slider 2.
  • the sliding rail 1 extends along the traveling direction of the frame 200 and is provided at the lower portion of the frame 200.
  • the sliding block 2 is slidably arranged on the sliding rail 1.
  • the handle 3 is movable between the storage position and the pulled-out position stored in the lower part of the frame 200.
  • the handle 3 includes a rod portion 31 and a handle portion 32.
  • the handle portion 32 is provided at the first end of the rod portion 31.
  • the second end is pivotally connected to the slider 2.
  • the arrangement of the slide rail 1 can play a guiding role for the movement of the slider 2 so as to improve the movement stability of the slider 2.
  • the slider 2 can stably drive the rod 31 to slide, so that the handle 3 can be stored in the lower part of the frame 200, and the handle 3 can also be stably slid out, that is, the storage position of the handle 3 in the lower part of the frame 200 can be improved.
  • Motion stability between the position and the pulled-out position is pivotally connected to the slider 2, so that in actual operation, the second end of the rod 31 can rotate relative to the slider 2, for example, the second end of the rod 31 can rotate to interact with the slider 2.
  • the rails 1 are parallel, which facilitates the movement of the rod 31 between the stowed position and the pulled-out position.
  • the handle is only provided with a pull-out position. In this way, the user's selection range is small, which is inconvenient for the user's work. For example, when the cart is unloaded, the handle position is likely to block the user's work. For example, when the cart is used, the handle is in the pulled-out position during storage, which takes up a lot of space.
  • the handle assembly 100 of the embodiment of the present invention when the handle 3 is in the storage position, the handle 3 is located at the lower part of the frame 200. In this way, the cart 1000 can be made smaller, the space occupied by the cart 1000 can be reduced, the operation of the user can be facilitated, and the obstacle of the handle 3 can be reduced.
  • the handle 3 when the stroller 1000 is suitable for carrying infants and young children, the handle 3 is in the storage position, which is convenient for the infants and young children to ride and the user to interact with the infants and young children.
  • the cart 1000 is used to carry goods and the handle 3 is in the storage position. At this time, the cart 1000 occupies a small space and is convenient for storage, and the handle 3 will not block the user's handling, and the handling of the goods is more convenient.
  • the handle 3 In the pulled-out position, the handle 3 can facilitate the user to pull the cart 1000, which is beneficial to control the direction of the cart 1000, and makes the cart 1000 travel safer. That is to say, the handle assembly 100 is highly convenient and can be switched between the storage position and the pulled out position. In actual use, the user can freely switch the state of the handle 3 according to actual needs.
  • the arrangement of the handle portion 32 can provide the user with a hand-held portion, which can further enhance the convenience of the user when switching the storage and pulling state of the handle 3 and the cart 1000.
  • the handle 3 is configured to be movable between the storage position and the pulled-out position stored in the lower part of the frame 200.
  • the cart 1000 can be made smaller, the space occupied by the cart 1000 can be reduced, the operation of the user is facilitated, and the obstacle of the handle 3 can be reduced.
  • the handle 3 is in the storage position, which is convenient for the infants and young children to ride and the user to interact with the infants and young children.
  • the cart 1000 is used to carry goods and the handle 3 is in the storage position.
  • the cart 1000 occupies a small space and is convenient for storage, and the handle 3 will not block the user's handling, which improves the handling efficiency of the goods.
  • the handle 3 can facilitate the user to pull the cart 1000, which is beneficial to control the direction of the cart 1000, and makes the cart 1000 travel safer.
  • the handle assembly 100 of the cart further includes a positioning assembly 4, which is arranged between the slider 2 and the rod portion 31, so that the rod portion 31 is positioned relative to the slider 2 Positioning on multiple different pivot angles.
  • the arrangement of the positioning assembly 4 can limit and fix the rod portion 31 so that the rod portion 31 has a plurality of different positioning angles relative to the slider 2.
  • the lever portion 31 can rotate at a plurality of different pivot angles relative to the slider 2 and is stably positioned at a plurality of different pivot angles by the positioning assembly 4.
  • the handle assembly 100 such as a cart can be suitable for different people.
  • the lever portion 31 has a plurality of different positioning angles relative to the slider 2, so that the user can adjust the lever portion 31 to a certain pivot angle relative to the slider 2 for positioning according to their height, usage habits, etc. Can further improve the safety of use.
  • the positioning assembly 4 includes: a first pivoting portion 41, a second pivoting portion 42, a locking gear 43 and a first elastic member 44.
  • the first pivoting portion 41 is disposed on the slider 2 and defines a first pivoting groove 411 inside.
  • the bottom wall of the first pivoting groove 411 is provided with a first matching tooth 412.
  • the second pivoting portion 42 is provided on the second end of the rod portion 31, and the second pivoting portion 42 and the first pivoting portion 41 are relatively rotatably connected.
  • One end of the locking gear 43 is provided with a second mating tooth 431, and the first mating tooth 412 and the second mating tooth 431 can mesh with each other.
  • the first elastic member 44 is used to apply a pretension force to the locking gear 43 toward the first mating tooth 412. It can be understood that when the user rotates the handle 3, the second end of the lever portion 31 drives the second pivoting portion 42 and the locking gear 43 to rotate synchronously, and the second matching tooth 431 at the other end of the locking gear 43 will be opposite to the first The mating teeth 412 engage and rotate, so as to realize the relative rotation between the second pivoting portion 42 and the first pivoting portion 41.
  • the meshing form of the locking gear 43 and the second mating tooth 431 is adopted, which not only has high stability, but also has a simple structure.
  • the arrangement of the first elastic member 44 here can exert a pre-tightening force on the locking gear 43 toward the first mating tooth 412, so that the locking gear 43 is often fitted on the first mating tooth 412, thereby lifting the first mating tooth 412
  • the stability of the meshing with the second mating tooth 431 improves the reliability of the adjustment and positioning of the rod portion 31.
  • the second pivoting portion 42, the locking gear 43, and the first pivoting portion 41 are sequentially along the first reference direction.
  • This can make the layout of the positioning structure 4 more compact, the transmission more stable, and the positioning more reliable.
  • the first matching teeth 412 and the second matching teeth 431 protrude toward each other, and both the first matching teeth 412 and the second matching teeth 431 are formed in an annular gear ring structure.
  • the ring gear structure facilitates the angle adjustment of the first mating teeth 412 and the second mating teeth 431, and can improve the positioning stability between the first mating teeth 412 and the second mating teeth 431.
  • the first matching tooth 412 includes a plurality of first teeth, and the plurality of first teeth are evenly spaced along the first pivot groove 411 to form an annular ring gear structure.
  • the circumferential direction of the locking gear 43 is taken as the second reference direction.
  • the second mating tooth 431 includes a plurality of second teeth, and the plurality of second teeth are evenly spaced apart along the second reference direction to form an annular ring gear structure.
  • the second pivoting portion 42 may be sleeved outside the first pivoting portion 41, and the second pivoting portion 42 defines a second pivot The slot 421, one end of the locking gear 43 away from the second matching tooth 431 is fixedly connected to the second pivot slot 421. In this way, the firmness of the fit between the first pivoting portion 41 and the second pivoting portion 42 can be improved, thereby further improving the stability of the relative rotation between the first pivoting portion 41 and the second pivoting portion 42.
  • the end of the locking gear 43 away from the second mating tooth 431 is fixedly connected to the second pivoting groove 421, which refers to the end of the locking gear 43 away from the second mating tooth 431 and the second pivoting groove. 421 do not rotate with each other.
  • the second pivoting groove 421 is provided with a central mounting post 422 and a plurality of positioning ribs 423.
  • the locking gear 43 is provided with a sleeve hole 432, and the sleeve hole 432 is sleeved on the central mounting post 422. It can be understood that, on the one hand, the arrangement of the central mounting post 422 can improve the structural strength of the second pivoting portion 42, thereby increasing the service life of the second pivoting portion 42. On the other hand, the central mounting post 422 can also improve the stability of the cooperation between the lifting second pivoting portion 42 and the locking gear.
  • a plurality of positioning ribs 423 are arranged radially around the circumference of the central mounting column 422, and the locking gear 43 is provided with a plurality of positioning side plates 433 extending toward the positioning ribs 423, and two adjacent positioning side plates 433 are defined between In the positioning groove 432, the plurality of positioning ribs 423 are fitted in the plurality of positioning grooves 432 one by one. In this way, the positioning side plate 433 and the positioning rib 423 can be mutually restricted, thereby improving the synchronization of the movement of the second pivoting portion 42 and the locking gear.
  • At least one positioning side plate 433 is provided with a stepped groove 4331
  • at least one positioning block 424 is provided on the peripheral wall of the second pivoting groove 421
  • the stepped groove 4331 is positioned in cooperation with the positioning block 424.
  • the second matching tooth 431 is located at an end of the locking gear 43 facing the first pivoting portion 41, and the positioning side plate 433 is located at an end of the locking gear 43 facing the second pivoting portion 42.
  • the second pivoting portion 42 is mounted on the second end of the rod portion 31 through a sleeve 45, and the sleeve 45 and the second pivoting portion 42 are integrally formed.
  • the arrangement of the sleeve 45 can improve the installation stability of the second pivoting portion 42 and the second end of the rod portion 31, and improve the movement stability of the handle 3 in the stowed position and the opened position.
  • the sleeve 45 and the second pivoting portion 42 are formed integrally, so that the structural strength of the second pivoting portion 42 can be improved, thereby further improving the reliability of the handle assembly 100.
  • the rod 31 includes two rods 31, and the two rods 31 are spaced apart from each other and arranged on the handle part 32, and the positioning assembly 4 includes two rods 31 respectively. Connected to the slider 2. In this way, the structural strength of the handle assembly 100 can be improved, thereby improving the stability of the switching motion state of the handle 3, and increasing the service life of the handle assembly 100.
  • the two rod portions 31 are arranged symmetrically, and the two positioning components 4 are arranged symmetrically.
  • the pivoting stability of the two rod portions 31 relative to the slider 2 can be improved, and the positioning stability of the rod portion 31 by the positioning assembly 4 can be further improved.
  • the frame 200 further includes a cross bar 201.
  • the cross bar 201 and the slide rail 1 are perpendicular to each other.
  • the cross bar 201 is provided with a placement portion 202.
  • the arrangement of the cross bar 201 can improve the structural strength of the frame 200.
  • the cross bar 201 can also provide an installation position for the placement portion 202 to improve the installation stability of the placement portion 202. In this way, when the handle 3 is in the storage position and the handle portion 32 is supported on the placement portion 202, the placement portion 202 can support the handle 3 well, thereby improving the storage stability of the handle portion 32.
  • the placement portion 202 is formed in a hook-like structure, and the placement portion 202 includes two and is spaced apart along the length direction of the cross bar 201. In this way, the supporting stability of the placing portion 202 can be improved, thereby further improving the supporting effect of the placing portion 202 on the handle portion 32.
  • the handle assembly 100 further includes a locking structure 5, which is provided in the handle portion 32 and when the handle 3 is in the storage position, the locking structure 5 It cooperates with the placement portion 202 to limit the freedom of movement of the handle 3. In this way, when in the storage position, the handle 3 is in a locked state, so that the safety of the handle 3 can be improved. For example, when the cart 1000 is placed in an inclined position, since the locking structure 5 cooperates with the placement portion 202 to limit the freedom of movement of the handle 3, the handle 3 will not automatically extend, making the storage state more stable and safer.
  • the handle portion 32 defines a receiving cavity 321
  • the locking structure 5 includes a main body portion 51, a button portion 52, a hook portion 53 and a second elastic member 54.
  • the main body 51 is disposed in the containing cavity 321, and the main body 51 is movable in the containing cavity 321.
  • the button part 52 is connected to the main body 51, and the button part 52 extends out of the accommodating cavity 321.
  • the hook portion 53 is connected to the main body 51, and the handle portion 32 is provided with a through hole. When the main body 51 moves in the containing cavity 321, the hook portion 53 can extend or retract into the containing cavity 321 through the through hole.
  • the second elastic member 54 is disposed in the accommodating cavity 321 and is used to apply a pretensioning force to the main body 51 to cause the hook portion 53 to extend out of the accommodating cavity 321. It is understandable that in actual use, the user can press the button part 52, and the button part 52 drives the main body part 51 to move away from the button part 52. At this time, the main body part 51 compresses the second elastic member 54 and the hook part 53 It is received into the accommodating cavity 321, or the protrusion of the hook portion 53 is reduced, so that the hook portion 53 can pass through the placement portion 202. When the user releases the button part 52, the second elastic member 54 resumes its deformation and exerts pressure on the main body 51 to cause the hook part 53 to extend out of the accommodating cavity 321.
  • the protrusion amount of the hook part 53 increases, so that it can be locked in the placing part 202.
  • the locking structure 5 is simple, and the design is compact and ingenious, which is convenient for controlling the state of the hook portion 53 and is beneficial to the convenience of the user.
  • the locking structure 5 further includes a stopper portion 55, which is connected to the main body portion 51, and two ends of the second elastic member 54 are respectively stopped by the stopper portion 55 and the accommodating cavity. Between the inner walls of 321. It can be understood that the abutting portion 55 can limit the second elastic member 54 so as to improve the operational stability of the second elastic member 54. In addition, the arrangement of the abutting portion 55 can also increase the structural strength of the main body 51, thereby improving the locking stability of the locking structure 5.
  • the cart 1000 includes a frame 200, and the frame 200 includes a cross bar 201.
  • the handle assembly 100 includes a sliding rail 1, a handle 3, a sliding block 2, a positioning assembly 4 and a locking structure 5.
  • the sliding rail 1 extends along the traveling direction of the frame 200 and is arranged at the lower part of the frame 200.
  • the sliding block 2 is slidably arranged on the sliding rail 1.
  • the handle 3 is movable between the storage position and the pulled-out position stored in the lower part of the frame 200.
  • the handle 3 includes a rod portion 31 and a handle portion 32.
  • the handle portion 32 is provided at the first end of the rod portion 31.
  • the second end is pivotally connected to the slider 2.
  • the handle 3 is located at the lower part of the frame 200.
  • the rod portion 31 includes two rod portions 31, and the two rod portions 31 are spaced apart from each other and arranged on the handle portion 32.
  • the positioning assembly 4 is provided between the slider 2 and the rod portion 31 so that the rod portion 31 is positioned relative to the slider 2 at a plurality of different pivot angles.
  • the positioning assembly 4 includes two and is used to connect the two rod portions 31 to the slider 2 respectively.
  • the positioning assembly 4 includes: a first pivoting portion 41, a second pivoting portion 42, a locking gear 43 and a first elastic member 44.
  • the first pivoting portion 41 is disposed on the slider 2 and defines a first pivoting groove 411 inside.
  • the bottom wall of the first pivoting groove 411 is provided with a first matching tooth 412.
  • the second pivoting portion 42 is provided on the second end of the rod portion 31, and the second pivoting portion 42 and the first pivoting portion 41 are relatively rotatably connected.
  • the first elastic member 44 is used to apply a pretension force to the locking gear 43 toward the first mating tooth 412.
  • the first mating teeth 412 and the second mating teeth 431 protrude toward each other, and both the first mating teeth 412 and the second mating teeth 431 are formed in an annular ring gear structure.
  • the second pivoting portion 42 can be sleeved on the outside of the first pivoting portion 41, the second pivoting portion 42 defines a second pivoting groove 421, and the end of the locking gear 43 away from the second matching tooth 431 and the The two pivot slots 421 are fixedly connected.
  • the second pivot groove 42 is provided with a central mounting post 422 and a plurality of positioning ribs 423.
  • the locking gear 43 is provided with a sleeve hole 432, and the sleeve hole 432 is sleeved on the central mounting post 422.
  • a plurality of positioning ribs 423 are arranged radially around the circumference of the central mounting column 422, and the locking gear 43 is provided with a plurality of positioning side plates 433 extending toward the positioning ribs 423, and a plurality of positioning side plates 433 are defined between adjacent two positioning side plates 433.
  • the plurality of positioning ribs 423 are fitted in the plurality of positioning grooves 432 one by one.
  • the positioning side plate 433 is provided with a stepped groove 4331, and the peripheral wall of the second pivoting groove 421 is provided with a positioning block 424, and the stepped groove 4331 is positioned in cooperation with the positioning block 424.
  • the second pivoting portion 42 is installed at the second end of the rod portion 31 through a sleeve 45, and the sleeve 45 and the second pivoting portion 42 are integrally formed.
  • the cross bar 201 and the slide rail 1 are perpendicular to each other.
  • the cross bar 201 is provided with a placement portion 202 formed in a hook-like structure.
  • the placement portion 202 includes two and is spaced apart along the length direction of the cross bar 201. When the handle 3 is in the storage position, the handle portion 32 is supported on the placement portion 202.
  • the locking structure 5 is provided in the handle portion 32 and when the handle 3 is in the storage position, the locking structure 5 cooperates with the placing portion 202 to limit the freedom of movement of the handle 3.
  • the handle portion 32 defines a receiving cavity 321, and the locking structure 5 includes a main body portion 51, a button portion 52, a hook portion 53, a second elastic member 54 and a resisting portion 55.
  • the main body 51 is disposed in the containing cavity 321, and the main body 51 is movable in the containing cavity 321.
  • the button part 52 is connected to the main body 51, and the button part 52 extends out of the accommodating cavity 321.
  • the hook portion 53 is connected to the main body 51, and the handle portion 32 is provided with a through hole.
  • the hook portion 53 can extend or retract into the containing cavity 321 through the through hole.
  • the second elastic member 54 is disposed in the accommodating cavity 321 and is used to apply a pretensioning force to the main body 51 to cause the hook portion 53 to extend out of the accommodating cavity 321.
  • the abutment portion 55 is connected to the main body 51, and two ends of the second elastic member 54 are respectively abutted between the abutment portion 55 and the inner wall of the accommodating cavity 321.
  • the cart 1000 according to the embodiment of the present invention includes the handle assembly 100 of the cart according to the foregoing embodiment of the present invention.
  • the handle 3 is configured to be movable between the storage position stored in the lower part of the frame 200 and the pulled-out position. In this way, when the handle 3 is in the storage position, the cart 1000 can be made smaller, the space occupied by the cart 1000 can be reduced, the operation of the user is facilitated, and the obstacle of the handle 3 can be reduced.
  • the handle 3 is in the storage position, which is convenient for the infants and young children to ride and the user to interact with the infants and young children.
  • Another example is when the cart 1000 is used to carry goods and the handle 3 is in the storage position.
  • the cart 1000 occupies a small space and is convenient for storage, and the handle 3 will not block the user's handling, and the handling of the goods is more convenient.
  • the handle 3 can facilitate the user to pull the cart 1000, which is beneficial to control the direction of the cart 1000, and makes the cart 1000 travel safer.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
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Abstract

一种推车（1000）的拉手组件（100）及具有其的推车（1000），推车（1000）包括车架（200），拉手组件（100）包括：滑轨（1），滑轨（1）沿车架（200）的行进方向延伸且设于车架（200）下部；滑块（2），滑块（2）可滑动地设置在滑轨（1）上；拉手（3），拉手（3）在收纳在车架（200）下部的收纳位置和拉出位置之间可运动，其中拉手（3）包括杆部（31）和把手部（32），把手部（32）设于杆部（31）的第一端，杆部（31）的第二端与滑块（2）可枢转相连。

Description

推车的拉手组件及具有其的推车 技术领域
本实用新型涉及推车技术领域，尤其是涉及一种推车的拉手组件及具有其的推车。
背景技术
一般的推车中，多设有车架和拉手组件。有的推车中，拉手组件位于车架的上部，占用空间大，用户作业不便。
实用新型内容
本实用新型旨在至少解决现有技术中存在的技术问题之一。为此，本实用新型提出一种推车的拉手组件，以便于用户作业，减少推车的占用空间。
本实用新型还旨在提出一种具有上述拉手组件的推车。
根据本实用新型实施例的推车的拉手组件，所述推车包括车架，所述拉手组件包括：滑轨，所述滑轨沿所述车架的行进方向延伸且设于所述车架下部；滑块，所述滑块可滑动地设置在所述滑轨上；拉手，所述拉手在收纳在所述车架下部的收纳位置和拉出位置之间可运动，其中所述拉手包括杆部和把手部，所述把手部设于所述杆部的第一端，所述杆部的第二端与所述滑块可枢转相连。
根据本实用新型实施例的推车的拉手组件，通过将拉手设置为在收纳在车架下部的收纳位置和拉出位置之间可运动。这样当拉手处于收纳位置时，可以使得推车小体积化，降低推车的占用空间，且便于用户的作业，减少拉手的阻碍。如当推车适用于承载婴幼儿时，拉手处于收纳位置，便于婴幼儿的乘坐以及用户与婴幼儿互动。又如当推车用于承载货物，拉手处于收纳位置，此时推车的占用空间小，便于存储，且拉手不会对用户的搬运造成阻挡，货物的搬运更加便捷。当拉手处于拉出位置时，拉手可以便于用户拉动推车，有利于控制推车的走向，使得推车的行驶更加安全。
在一些实施例中，推车的拉手组件还包括定位组件，所述定位组件设于所述滑块和所述杆部之间，以使所述杆部相对于所述滑块在多个不同的枢转角度上进行定位。
具体地，所述定位组件包括：第一枢转部，所述第一枢转部设于所述滑块上且内部限定有第一枢转槽，所述第一枢转槽的底壁设有第一配合齿；第二枢转部，所述第二枢 转部设于所述杆部的所述第二端上，所述第二枢转部和所述第一枢转部可相对转动的连接；锁止齿轮，所述锁止齿轮的一端设有第二配合齿，所述第一配合齿和所述第二配合齿可彼此啮合；第一弹性件，所述第一弹性件用于对所述锁止齿轮施加朝向所述第一配合齿的预紧力。
进一步地，所述第一配合齿和所述第二配合齿朝向彼此凸出，且所述第一配合齿和所述第二配合齿均形成为环形齿圈结构。
在一些可选的实施例中，所述第二枢转部可套设在所述第一枢转部的外部，所述第二枢转部内限定有第二枢转槽，所述锁止齿轮的远离所述第二配合齿的一端与所述第二枢转槽固定相连。
具体地，所述第二枢转槽内设有：中心安装柱，所述锁止齿轮上设有套装孔，所述套装孔套装在所述中心安装柱上；多个定位筋，多个所述定位筋围绕所述中心安装柱的周向呈放射状布置，所述锁止齿轮的上设有多个朝向所述定位筋延伸的定位边板，相邻两个所述定位边板之间限定出定位槽，多个所述定位筋一一配合在多个所述定位槽内。
进一步地，至少一个所述定位边板上设有阶梯槽，所述第二枢转槽的周壁上至少设有一个定位块，所述阶梯槽与所述定位块配合定位。
在一些可选的实施例中，所述第二枢转部通过套管安装在所述杆部的所述第二端，所述套管与所述第二枢转部一体成型。
在一些实施例中，所述杆部包括两个，两个所述杆部彼此间隔开设置在所述把手部上，所述定位组件包括两个且分别用于将两个所述杆部连接在所述滑块上。
在一些实施例中，所述车架还包括横杆，所述横杆与所述滑轨彼此垂直，所述横杆上设有放置部，所述拉手位于所述收纳位置时，所述把手部支撑在所述放置部上。
具体地，所述放置部形成为勾状结构，且所述放置部包括两个且沿所述横杆的长度方向间隔开设置。
在一些可选的实施例中，推车的拉手组件还包括锁止结构，所述锁止结构设于所述把手部内且在所述拉手位于所述收纳位置时，所述锁止结构与所述放置部配合以限制所述拉手的移动自由度。
具体地，所述把手部内限定出容纳腔，所述锁止结构包括：主体部，所述主体部设于所述容纳腔内，且所述主体部在所述容纳腔内可移动；按钮部，所述按钮部连接在所述主体部上，所述按钮部伸出所述容纳腔；卡勾部，所述卡勾部连接在所述主体部上，所述把手部上设有通孔，在所述主体部在所述容纳腔内移动时，所述卡勾部可经所述通孔伸出或缩回所述容纳腔；第二弹性件，所述第二弹性件设于所述容纳腔内且用于对所 述主体部施加使所述卡勾部伸出所述容纳腔的预紧力。
进一步地，所述锁止结构还包括止抵部，所述止抵部连接在所述主体部上，所述第二弹性件的两端分别止抵在所述止抵部和所述容纳腔的内壁之间。
根据本实用新型实施例的推车，包括根据本实用新型上述实施例所述的推车的拉手组件。
根据本实用新型实施例的推车，通过将拉手设置为在收纳在车架下部的收纳位置和拉出位置之间可运动。这样当拉手处于收纳位置时，可以使得推车小体积化，降低推车的占用空间，且便于用户的作业，减少拉手的阻碍。如当推车适用于承载婴幼儿时，拉手处于收纳位置，便于婴幼儿的乘坐以及用户与婴幼儿互动。又如当推车用于承载货物，拉手处于收纳位置，此时推车的占用空间小，便于存储，且拉手不会对用户的搬运造成阻挡，货物的搬运更加便捷。当拉手处于拉出位置时，拉手可以便于用户拉动推车，有利于控制推车的走向，使得推车的行驶更加安全。
本实用新型的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本实用新型的实践了解到。
附图说明
本实用新型的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1为本实用新型实施例中推车的部分结构示意图(其中，包括车架和拉手组件)；
图2为本实用新型实施例中拉手组件的部分结构示意图(其中，包括滑块、拉手和定位组件)；
图3为图2所示结构的爆炸图；
图4为本实用新型实施例中拉手组件的部分结构爆炸图(其中，包括滑块和定位组件)；
图5为本实用新型实施例中滑轨和车架的结构示意图；
图6为本实用新型实施例中拉手组件的部分结构爆炸图(其中，包括把手部和锁止结构)；
图7为本实用新型实施例中推车的结构示意图。
附图标记：
推车1000、
拉手组件100、
滑轨1、
滑块2、
拉手3、杆部31、把手部32、容纳腔321、
定位组件4、第一枢转部41、第一枢转槽411、第一配合齿412、第二枢转部42、第二枢转槽421、中心安装柱422、定位筋423、定位块424、锁止齿轮43、第二配合齿431、套装孔432、定位边板433、阶梯槽4331、定位槽434、第一弹性件44、套管45、
锁止结构5、主体部51、按钮部52、卡勾部53、第二弹性件54、止抵部55、
车架200、横杆201、放置部202。
具体实施方式
下面详细描述本实用新型的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本实用新型，而不能理解为对本实用新型的限制。
在本实用新型的描述中，需要理解的是，术语“上”、“下”、、“顶”、“底”、“内”、“外”、“中心”、“纵向”、“横向”、“竖直”、“水平”、“轴向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本实用新型和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本实用新型的限制。此外，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本实用新型的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本实用新型的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本实用新型中的具体含义。
下面参考图1-图6描述根据本实用新型实施例的推车的拉手组件100。
根据本实用新型实施例的推车的拉手组件100，如图1所示，推车1000包括车架200，拉手组件100包括：滑轨1、拉手3和滑块2。滑轨1沿车架200的行进方向延伸且设于车架200下部。滑块2可滑动地设置在滑轨1上。拉手3在收纳在车架200下部的收 纳位置和拉出位置之间可运动，其中拉手3包括杆部31和把手部32，把手部32设于杆部31的第一端，杆部31的第二端与滑块2可枢转相连。
可以理解的是，滑轨1的设置可以为滑块2的移动起到导向作用，从而可以提升滑块2的运动稳定性。这样滑块2能够稳定地带动杆部31滑动，从而可以使得拉手3收纳在车架200下部，也可以使得拉手3稳定地滑出，即可以提高拉手3在收纳在车架200下部的收纳位置和拉出位置之的间运动稳定性。这里杆部31的第二端与滑块2可枢转相连，这样在实际作业中，杆部31的第二端相对滑块2可以转动，如杆部31的第二端可以转动以与滑轨1平行，这样便于杆部31在收纳位置和拉出位置之间的运动。
有的拉手组件中，拉手仅设有拉出位置。这样用户的可选择范围小，不便于用户的作业，如当推车卸载时，拉手位置容易阻挡用户的作业。如当推车使用后，在存放过程中，拉手处于拉出位置，占用空间大。本发明实施例的拉手组件100中，当拉手3处于收纳位置时，拉手3位于车架200下部。这样可以使得推车1000小体积化，降低推车1000的占用空间，且便于用户的作业，减少拉手3的阻碍。如当推车1000适用于承载婴幼儿时，拉手3处于收纳位置，便于婴幼儿的乘坐以及用户与婴幼儿互动。又如当推车1000用于承载货物，拉手3处于收纳位置，此时推车1000的占用空间小，便于存储，且拉手3不会对用户的搬运造成阻挡，货物的搬运更加便捷。在拉出位置时，拉手3可以便于用户拉动推车1000，有利于控制推车1000的走向，使得推车1000的行驶更加安全。也就是说拉手组件100的便捷性高，可以在收纳位置和拉出位置之间切换，在实际使用过程中，用户可以根据实际需要自由切换拉手3的状态。
另外，把手部32的设置可以用户提供手持部，可以进一步提升用户切换拉手3收纳、拉出状态以及推车1000时的便利性。
根据本实用新型实施例的推车的拉手组件100，通过将拉手3设置为在收纳在车架200下部的收纳位置和拉出位置之间可运动。这样当拉手3处于收纳位置时，可以使得推车1000小体积化，降低推车1000的占用空间，且便于用户的作业，减少拉手3的阻碍。如当推车1000适用于承载婴幼儿时，拉手3处于收纳位置，便于婴幼儿的乘坐以及用户与婴幼儿互动。又如当推车1000用于承载货物，拉手3处于收纳位置，此时推车1000的占用空间小，便于存储，且拉手3不会对用户的搬运造成阻挡，提高货物的搬运效率。当拉手3处于拉出位置时，拉手3可以便于用户拉动推车1000，有利于控制推车1000的走向，使得推车1000的行驶更加安全。
在一些实施例中，如图2所示，推车的拉手组件100还包括定位组件4，定位组件4设于滑块2和杆部31之间，以使杆部31相对于滑块2在多个不同的枢转角度上进行定 位。可以理解的是，定位组件4的设置可以对杆部31起到限位、固定的作用，使得杆部31相对于滑块2具有多个不同的定位角度。也就是说，杆部31相对于滑块2可以转动多个不同的枢转角度，并通过定位组件4稳定地定位在多个不同的枢转角度上。这样可以进一步扩大拉手组件100的可应用范围。如推车的拉手组件100可以适用于不同的人群。如杆部31相对于滑块2具有多个不同的定位角度，从而用户可以根据自己的身高情况、使用习惯等将杆部31相对滑块2调节至一定的枢转角度进行定位，并且这样也能够进一步提升使用安全性。
具体地，如图3和图4所示，定位组件4包括：第一枢转部41、第二枢转部42、锁止齿轮43和第一弹性件44。第一枢转部41设于滑块2上且内部限定有第一枢转槽411，第一枢转槽411的底壁设有第一配合齿412。第二枢转部42设于杆部31的第二端上，第二枢转部42和第一枢转部41可相对转动的连接。锁止齿轮43的一端设有第二配合齿431，第一配合齿412和第二配合齿431可彼此啮合。第一弹性件44用于对锁止齿轮43施加朝向第一配合齿412的预紧力。可以理解的是，当用户转动拉手3时，杆部31的第二端带动第二枢转部42、锁止齿轮43同步转动，锁止齿轮43另一端的第二配合齿431将相对第一配合齿412啮合转动，从而实现第二枢转部42和第一枢转部41之间的相对转动。
采用锁止齿轮43、第二配合齿431的啮合形式，不仅稳定性高，且结构简单。另外，这里第一弹性件44的设置可以对锁止齿轮43施加朝向第一配合齿412的预紧力，使得锁止齿轮43常配合在第一配合齿412上，从而提升第一配合齿412和第二配合齿431彼此啮合的稳定性，提升杆部31的调节及定位的可靠性。
可选的，如图3和4所示，以锁紧齿轮43的轴向为第一参考方向，第二枢转部42、锁紧齿轮43、第一枢转部41沿第一参考方向依次配合。这样可以使得定位结构4的布局更加紧凑，传动更加稳定，定位更加牢靠。
进一步地，如图4所示，第一配合齿412和第二配合齿431朝向彼此凸出，且第一配合齿412和第二配合齿431均形成为环形齿圈结构。可以理解的是，环形齿圈结构便于第一配合齿412和第二配合齿431的角度调节，且可以提升第一配合齿412和第二配合齿431之间的定位稳定性。
可选的，如图4所示，第一配合齿412包括多个第一齿，多个第一齿沿第一枢转槽411均匀间隔开设置以形成环形齿圈结构。
可选的，如图4所示，以锁紧齿轮43的周向为第二参考方向。第二配合齿431包括多个第二齿，多个第二齿沿第二参考方向均匀间隔开设置以形成环形齿圈结构。
在一些可选的实施例中，如图3和图4所示，第二枢转部42可套设在第一枢转部41的外部，第二枢转部42内限定有第二枢转槽421，锁止齿轮43的远离第二配合齿431的一端与第二枢转槽421固定相连。这样可以提高第一枢转部41与第二枢转部42之间的配合牢靠性，从而进一步提升第一枢转部41与第二枢转部42之间相对转动的稳定性。这里需要说明的是锁止齿轮43的远离第二配合齿431的一端与第二枢转槽421固定相连，指的是锁止齿轮43的远离第二配合齿431的一端与第二枢转槽421彼此不发生转动。
具体地，如图4所示，第二枢转槽421内设有：中心安装柱422和多个定位筋423。锁止齿轮43上设有套装孔432，套装孔432套装在中心安装柱422上。可以理解的是，一方面中心安装柱422的设置可以提高第二枢转部42的结构强度，从而提升第二枢转部42的使用寿命。另一方面，中心安装柱422也可以提高提升第二枢转部42与锁紧齿轮的配合稳定性。
多个定位筋423围绕中心安装柱422的周向呈放射状布置，锁止齿轮43的上设有多个朝向定位筋423延伸的定位边板433，相邻两个定位边板433之间限定出定位槽432，多个定位筋423一一配合在多个定位槽432内。这样定位边板433与定位筋423可以相互限位，从而提升第二枢转部42与锁紧齿轮运动的同步性。
进一步地，如图4所示，至少一个定位边板433上设有阶梯槽4331，第二枢转槽421的周壁上至少设有一个定位块424，阶梯槽4331与定位块424配合定位。这样提升第二枢转部42与锁紧齿轮之间的定位稳固性，从而进一步提升第二枢转部42与锁紧齿轮运动的同步性。
可选的，如图4所示，第二配合齿431位于锁紧齿轮43朝向第一枢转部41的一端，定位边板433位于锁紧齿轮43朝向第二枢转部42的一端。从而可以分别实现与第一配合齿412、第二枢转槽421的可靠配合。
在一些可选的实施例中，如图4所示，第二枢转部42通过套管45安装在杆部31的第二端，套管45与第二枢转部42一体成型。可以理解的是，套管45的设置可以提升第二枢转部42与杆部31的第二端的安装稳定性，提升拉手3在收纳位置与拉开位置的运动稳定性。另外，套管45与第二枢转部42设置为一体成型，这样可以提升第二枢转部42的结构强度，从而进一步提升拉手组件100的可靠性。
在一些实施例中，如图3所示，杆部31包括两个，两个杆部31彼此间隔开设置在把手部32上，定位组件4包括两个且分别用于将两个杆部31连接在滑块2上。这样可以提高拉手组件100的结构强度，从而提升拉手3切换运动状态的稳定性，提升拉手组 件100的使用寿命。
可选的，两个杆部31对称设置，两个定位组件4对称设置。这样可以提升两个杆部31相对滑块2的枢转稳定性，也可以进一步提升定位组件4对杆部31的定位稳定性。
在一些实施例中，如图5所示，车架200还包括横杆201，横杆201与滑轨1彼此垂直，横杆201上设有放置部202，拉手3位于收纳位置时，把手部32支撑在放置部202上。可以理解的是，横杆201的设置可以提升车架200的结构强度。另外，横杆201还可以提供放置部202的安装位，提升放置部202的安装稳定性。这样当拉手3位于收纳位置，把手部32支撑在放置部202上时，放置部202可以对拉手3起到良好的支撑作用，从而提升把手部32的收纳稳定性。
具体地，如图5所示，放置部202形成为勾状结构，且放置部202包括两个且沿横杆201的长度方向间隔开设置。这样可以提升放置部202的支撑稳定性，从而进一步提升放置部202对把手部32的支撑效果。
在一些可选的实施例中，如图3和6所示，拉手组件100还包括锁止结构5，锁止结构5设于把手部32内且在拉手3位于收纳位置时，锁止结构5与放置部202配合以限制拉手3的移动自由度。这样在收纳位置时，拉手3处于锁定状态，从而可以提升拉手3的安全性。例如当推车1000放置在倾斜位置时，由于锁止结构5与放置部202配合限制了拉手3的移动自由度，拉手3不会自动伸出，使得收纳状态更加稳定，安全性更高。
具体地，如图6所示，把手部32内限定出容纳腔321，锁止结构5包括：主体部51、按钮部52、卡勾部53和第二弹性件54。主体部51设于容纳腔321内，且主体部51在容纳腔321内可移动。按钮部52连接在主体部51上，按钮部52伸出容纳腔321。卡勾部53连接在主体部51上，把手部32上设有通孔，在主体部51在容纳腔321内移动时，卡勾部53可经通孔伸出或缩回容纳腔321。第二弹性件54设于容纳腔321内且用于对主体部51施加使卡勾部53伸出容纳腔321的预紧力。可以理解的是，在实际使用过程中，用户可以按压按钮部52，按钮部52带动主体部51朝向远离按钮部52的方向运动，此时主体部51压缩第二弹性件54，卡勾部53收至容纳腔321，或者卡勾部53的伸出量减小，这样卡勾部53可以通过放置部202。当用户释放按钮部52，第二弹性件54恢复变形而对主体部51施加使卡勾部53伸出容纳腔321的压力，卡勾部53伸出量增加，从而可以卡合在放置部202以限制拉手3的移动自由度。这里锁止结构5简单，设计紧凑、巧妙，便于控制卡勾部53的状态，有利于用户的使用便捷性。
进一步地，如图6所示，锁止结构5还包括止抵部55，止抵部55连接在主体部51 上，第二弹性件54的两端分别止抵在止抵部55和容纳腔321的内壁之间。可以理解的是，止抵部55可以对第二弹性件54起到限位作用，从而提升第二弹性件54的作业稳定性。另外，止抵部55的设置也可以提高主体部51的结构强度，从而提升锁止结构5的锁固稳定性。
下面参考图1-图6描述本实用新型的一个具体实施例中的推车的拉手组件100。
根据本实用新型实施例的推车的拉手组件100，推车1000包括车架200，车架200包括横杆201。拉手组件100包括：滑轨1、拉手3、滑块2、定位组件4和锁止结构5。
其中，滑轨1沿车架200的行进方向延伸且设于车架200下部。
滑块2可滑动地设置在滑轨1上。
拉手3在收纳在车架200下部的收纳位置和拉出位置之间可运动，其中拉手3包括杆部31和把手部32，把手部32设于杆部31的第一端，杆部31的第二端与滑块2可枢转相连，当拉手3处于收纳位置时，拉手3位于车架200下部。杆部31包括两个，两个杆部31彼此间隔开设置在把手部32上。
定位组件4设于滑块2和杆部31之间，以使杆部31相对于滑块2在多个不同的枢转角度上进行定位。定位组件4包括两个且分别用于将两个杆部31连接在滑块2上。定位组件4包括：第一枢转部41、第二枢转部42、锁止齿轮43和第一弹性件44。第一枢转部41设于滑块2上且内部限定有第一枢转槽411，第一枢转槽411的底壁设有第一配合齿412。第二枢转部42设于杆部31的第二端上，第二枢转部42和第一枢转部41可相对转动的连接。锁止齿轮43的一端设有第二配合齿431，第一配合齿412和第二配合齿431可彼此啮合。第一弹性件44用于对锁止齿轮43施加朝向第一配合齿412的预紧力。第一配合齿412和第二配合齿431朝向彼此凸出，且第一配合齿412和第二配合齿431均形成为环形齿圈结构。第二枢转部42可套设在第一枢转部41的外部，第二枢转部42内限定有第二枢转槽421，锁止齿轮43的远离第二配合齿431的一端与第二枢转槽421固定相连。第二枢转槽42内设有：中心安装柱422和多个定位筋423。锁止齿轮43上设有套装孔432，套装孔432套装在中心安装柱422上。多个定位筋423围绕中心安装柱422的周向呈放射状布置，锁止齿轮43的上设有多个朝向定位筋423延伸的定位边板433，相邻两个定位边板433之间限定出定位槽432，多个定位筋423一一配合在多个定位槽432内。定位边板433上设有阶梯槽4331，第二枢转槽421的周壁上设有定位块424，阶梯槽4331与定位块424配合定位。第二枢转部42通过套管45安装在杆部31的第二端，套管45与第二枢转部42一体成型。
横杆201与滑轨1彼此垂直，横杆201上设有放置部202，放置部202形成为勾状 结构，且放置部202包括两个且沿横杆201的长度方向间隔开设置。拉手3位于收纳位置时，把手部32支撑在放置部202上。
锁止结构5设于把手部32内且在拉手3位于收纳位置时，锁止结构5与放置部202配合以限制拉手3的移动自由度。把手部32内限定出容纳腔321，锁止结构5包括：主体部51、按钮部52、卡勾部53、第二弹性件54和止抵部55。主体部51设于容纳腔321内，且主体部51在容纳腔321内可移动。按钮部52连接在主体部51上，按钮部52伸出容纳腔321。卡勾部53连接在主体部51上，把手部32上设有通孔，在主体部51在容纳腔321内移动时，卡勾部53可经通孔伸出或缩回容纳腔321。第二弹性件54设于容纳腔321内且用于对主体部51施加使卡勾部53伸出容纳腔321的预紧力。止抵部55连接在主体部51上，第二弹性件54的两端分别止抵在止抵部55和容纳腔321的内壁之间。
下面参考附图描述本实用新型实施例中的推车.1000。
根据本实用新型实施例的推车1000，如图7所示，包括根据本实用新型上述实施例所述的推车的拉手组件100。
根据本实用新型实施例的推车1000，通过将拉手3设置为在收纳在车架200下部的收纳位置和拉出位置之间可运动。这样当拉手3处于收纳位置时，可以使得推车1000小体积化，降低推车1000的占用空间，且便于用户的作业，减少拉手3的阻碍。如当推车1000适用于承载婴幼儿时，拉手3处于收纳位置，便于婴幼儿的乘坐以及用户与婴幼儿互动。又如当推车1000用于承载货物，拉手3处于收纳位置，此时推车1000的占用空间小，便于存储，且拉手3不会对用户的搬运造成阻挡，货物的搬运更加便捷。当拉手3处于拉出位置时，拉手3可以便于用户拉动推车1000，有利于控制推车1000的走向，使得推车1000的行驶更加安全。
根据本实用新型实施例的推车1000的其他构成例如行走部等以及操作对于本领域普通技术人员而言都是已知的，这里不再详细描述。
在本说明书的描述中，参考术语“实施例”、“示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本实用新型的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本实用新型的实施例，本领域的普通技术人员可以理解：在不脱离本实用新型的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本实用新型的范围由权利要求及其等同物限定。

Claims (15)

  1. 一种推车的拉手组件，其特征在于，所述推车包括车架，所述拉手组件包括：
    滑轨，所述滑轨沿所述车架的行进方向延伸且设于所述车架下部；
    滑块，所述滑块可滑动地设置在所述滑轨上；
    拉手，所述拉手在收纳所述车架下部的收纳位置和拉出位置之间可运动，其中所述拉手包括杆部和把手部，所述把手部设于所述杆部的第一端，所述杆部的第二端与所述滑块可枢转相连。
  2. 根据权利要求1所述的推车的拉手组件，其特征在于，还包括定位组件，所述定位组件设于所述滑块和所述杆部之间，以使所述杆部相对于所述滑块在多个不同的枢转角度上进行定位。
  3. 根据权利要求2所述的推车的拉手组件，其特征在于，所述定位组件包括：
    第一枢转部，所述第一枢转部设于所述滑块上且内部限定有第一枢转槽，所述第一枢转槽的底壁设有第一配合齿；
    第二枢转部，所述第二枢转部设于所述杆部的所述第二端上，所述第二枢转部和所述第一枢转部可相对转动的连接；
    锁止齿轮，所述锁止齿轮的一端设有第二配合齿，所述第一配合齿和所述第二配合齿可彼此啮合；
    第一弹性件，所述第一弹性件用于对所述锁止齿轮施加朝向所述第一配合齿的预紧力。
  4. 根据权利要求3所述的推车的拉手组件，其特征在于，所述第一配合齿和所述第二配合齿朝向彼此凸出，且所述第一配合齿和所述第二配合齿均形成为环形齿圈结构。
  5. 根据权利要求3所述的推车的拉手组件，其特征在于，所述第二枢转部可套设在所述第一枢转部的外部，所述第二枢转部内限定有第二枢转槽，所述锁止齿轮的远离所述第二配合齿的一端与所述第二枢转槽固定相连。
  6. 根据权利要求5所述的推车的拉手组件，其特征在于，所述第二枢转槽内设有：
    中心安装柱，所述锁止齿轮上设有套装孔，所述套装孔套装在所述中心安装柱上；
    多个定位筋，多个所述定位筋围绕所述中心安装柱的周向呈放射状布置，所述锁止齿轮的上设有多个朝向所述定位筋延伸的定位边板，相邻两个所述定位边板之间限定出定位槽，多个所述定位筋一一配合在多个所述定位槽内。
  7. 根据权利要求6所述的推车的拉手组件，其特征在于，至少一个所述定位边板上设有阶梯槽，所述第二枢转槽的周壁上至少设有一个定位块，所述阶梯槽与所述定位块配合定位。
  8. 根据权利要求3所述的推车的拉手组件，其特征在于，所述第二枢转部通过套管安装在所述杆部的所述第二端，所述套管与所述第二枢转部一体成型。
  9. 根据权利要求2～8中任一项所述的推车的拉手组件，其特征在于，所述杆部包括两个，两个所述杆部彼此间隔开设置在所述把手部上，所述定位组件包括两个且分别用于将两个所述杆部连接在所述滑块上。
  10. 根据权利要求1所述的推车的拉手组件，其特征在于，所述车架还包括横杆，所述横杆与所述滑轨彼此垂直，所述横杆上设有放置部，所述拉手位于所述收纳位置时，所述把手部支撑在所述放置部上。
  11. 根据权利要求10所述的推车的拉手组件，其特征在于，所述放置部形成为勾状结构，且所述放置部包括两个且沿所述横杆的长度方向间隔开设置。
  12. 根据权利要求10所述的推车的拉手组件，其特征在于，还包括锁止结构，所述锁止结构设于所述把手部内且在所述拉手位于所述收纳位置时，所述锁止结构与所述放置部配合以限制所述拉手的移动自由度。
  13. 根据权利要求12所述的推车的拉手组件，其特征在于，所述把手部内限定出容纳腔，所述锁止结构包括：
    主体部，所述主体部设于所述容纳腔内，且所述主体部在所述容纳腔内可移动；
    按钮部，所述按钮部连接在所述主体部上，所述按钮部伸出所述容纳腔；
    卡勾部，所述卡勾部连接在所述主体部上，所述把手部上设有通孔，在所述主体部在所述容纳腔内移动时，所述卡勾部可经所述通孔伸出或缩回所述容纳腔；
    第二弹性件，所述第二弹性件设于所述容纳腔内且用于对所述主体部施加使所述卡勾部伸出所述容纳腔的预紧力。
  14. 根据权利要求13所述的推车的拉手组件，其特征在于，所述锁止结构还包括止抵部，所述止抵部连接在所述主体部上，所述第二弹性件的两端分别止抵在所述止抵部和所述容纳腔的内壁之间。
  15. 一种推车，其特征在于，包括根据权利要求1～14中任一项所述的推车的拉手组件。
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