Buffer assembly and cart

Abstract

The embodiment of the utility model provides a buffer assembly and a cart, and relates to the field of carts. The buffering assembly comprises a supporting piece, an outer pipe, a buffering piece and an inner pipe, a guide groove is formed in the outer pipe, at least part of the supporting piece is contained in the guide groove, the supporting piece is connected with the outer pipe, the buffering piece is arranged in the guide groove, part of the inner pipe is contained in the guide groove, and the inner pipe is connected with the buffering piece. When the cart is opened, the inner pipe moves downwards and compresses the buffering piece, buffering of the inner pipe is achieved through the buffering piece, hard contact between the inner pipe and the supporting piece is avoided, and therefore the inner pipe and the supporting piece are protected. And when the cart needs to be folded, the buffer piece rebounds to provide upward assistance for upward movement of the inner pipe, so that more labor is saved during folding, and the use experience of a user is improved. The embodiment of the utility model further provides a cart. The cart comprises the buffering assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of trolley, specifically, relate to a buffer assembly and trolley. BACKGROUND

[0002] The trolley is a tool that can be used for transporting articles, can be used in outdoor activities (such as camping, picnic, fishing, etc.), can also be used in places with dense flow of people such as airports and stations, and articles are placed on the trolley to move, so as to achieve the purpose of saving labor and convenient transportation.

[0003] The structure of the existing trolley is mostly foldable to reduce the storage space, but these folding trolleys cannot provide assistance when folding, and manual folding is laborious, and the folding trolley is hard collision when unfolding, and no buffer measures are provided at the connecting part of the components, which can easily cause damage to the movable components. UTILITY MODEL CONTENT

[0004] The utility model provides a buffer assembly and trolley, which can solve the above problems existing in the prior art.

[0005] The embodiment of the utility model can be implemented as follows:

[0006] The embodiment of the utility model provides a buffer assembly, which comprises:

[0007] A support member;

[0008] An outer tube, a guide groove is formed in the inner part of the outer tube, the support member is at least partially accommodated in the guide groove, and the support member is connected with the outer tube;

[0009] A buffer member, which is arranged in the guide groove;

[0010] An inner tube, which is partially accommodated in the guide groove, the inner tube is connected with the buffer member, the buffer member can generate a rebound force in the axial direction of the outer tube, and the buffer member can push the inner tube to move in the guide groove.

[0011] Optionally, the support member comprises a sleeve and a shaft member, the sleeve is connected with the outer tube, and the shaft member is fixed in the sleeve.

[0012] Optionally, the buffer member is a spring or a rubber block, and the two ends of the spring or the rubber block are respectively connected with the support member and the inner tube in a releasable manner.

[0013] Optionally, the buffer member is a spring, one end of the spring is releasably connected with the support member, and the other end of the spring is fixedly connected with the inner tube.

[0014] Alternatively, one end of the spring is fixedly connected with the support member, and the other end of the spring is releasably connected with the inner tube.

[0015] Alternatively, the two ends of the spring are in contact with the support and the inner tube respectively.

[0016] Optionally, the buffer assembly further comprises an elastic clamping piece, one end of the elastic clamping piece is connected to the inner tube, and the other end of the elastic clamping piece is connected to the buffer piece.

[0017] Optionally, the elastic clamping piece is provided with a clamping groove, and the end of the buffer piece is clamped in the clamping groove.

[0018] Optionally, the buffer piece is a spring, and one end of the spring is fixedly connected to the inner tube.

[0019] The embodiment of the utility model further provides a cart, include: frame, wheel, wheel support and above-mentioned buffer assembly, wheel set up in wheel support, support and wheel support are connected, frame and outer tube and inner tube are connected.

[0020] Optionally, the frame comprises a front frame, a rear frame, a side frame and a bottom frame, the side frame is arranged on the left and right sides of the bottom frame, and the front frame and the rear frame are arranged on the front and rear sides of the bottom frame, respectively.

[0021] The side frame, the bottom frame, the front frame and the rear frame can be folded.

[0022] Optionally, the cart further comprises a pull rod, and the pull rod is connected to the front frame.

[0023] The embodiment of the utility model has the advantages of:

[0024] The buffer assembly comprises a support, an outer tube, a buffer piece and an inner tube, the inner tube is partially accommodated in the guide groove, the inner tube is connected with the buffer piece, when the cart is opened, the inner tube moves downward and compresses the buffer piece, the buffer piece buffers the inner tube, avoids the hard contact between the inner tube and the support, thereby protecting the inner tube and the support, when the cart needs to be folded, the buffer piece rebounds to provide upward power for the upward movement of the inner tube, thereby saving labor in folding and improving the user's experience.

[0025] The cart comprises the buffer assembly, and has all the functions of the buffer assembly. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0027] Figure 1The first state diagram of the buffer assembly is provided in the embodiment of the utility model.

[0028] Figure 2 The second state diagram of the buffer assembly is provided in the embodiment of the utility model.

[0029] Figure 3 The first perspective view structural diagram of the cart is provided in the embodiment of the utility model.

[0030] Figure 4 The second perspective view structural diagram of the cart is provided in the embodiment of the utility model.

[0031] Icon: 1-supporting piece; 10-sleeve; 11-axis piece; 111-bump; 2-outer tube; 20-guide groove; 3-buffer piece; 4-inner tube; 5-elastic clamping piece; 50-clamping groove; 6-carriage; 60-bottom frame; 601-bottom beam; 602-bottom joint; 61-side frame; 611-side connecting rod; 62-front frame; 621-first vertical rod; 622-first cross tube; 623-first bottom joint; 624-first top joint; 63-rear frame; 631-second vertical rod; 632-second cross tube; 633-second bottom joint; 634-second top joint; 7-wheel; 70-wheel support; 8-pull rod. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0034] It should be noted that: similar labels and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0035] In the description of the utility model, it needs to be explained that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0036] In addition, if the terms "first", "second" and the like are used only to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] The term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0038] Unless otherwise explicitly specified and limited, the terms "provide", "connect" and the like should be broadly understood, for example, "connect" can be fixed connection, can also be detachable connection, or integral connection, can be mechanical connection, can also be electrical connection, can be direct connection, or indirect connection through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0039] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.

[0040] The structure of the existing trolley is mostly foldable, so as to reduce the storage space, but these folding trolleys cannot provide power assistance when folding, and manual folding is laborious, and when the folding trolley is unfolded, some movable parts are hard collision, and no buffer measures are provided at the joint of the parts, which can easily cause damage to the movable parts. In addition, the connection between each pipe, wheel and other parts of the trolley is mostly hard connection, and the trolley will produce large vibration when passing through uneven road surface, which can easily cause the packages and other articles placed on the frame to slide off, and the vibration can also be transmitted to the trolley person through the pull rod, and the use experience is poor.

[0041] Based on the above problems, the embodiments of the utility model provide a kind of buffer assembly and cart, the buffer assembly can solve above-mentioned problem, the buffer assembly is used to cart, so that cart can also solve above-mentioned problem, of course, the application of the buffer assembly is not limited to cart, which will be described in detail.

[0042] Figure 1 For the schematic diagram of the buffer piece in the buffer assembly rebounding; Figure 2 For the schematic diagram of the buffer piece in the buffer assembly being compressed.

[0043] Please refer to Figure 1 With Figure 2 The buffer assembly includes support piece 1, outer tube 2, buffer piece 3 and inner tube 4, the inside of outer tube 2 is provided with guide groove 20, support piece 1 is at least partially accommodated in guide groove 20, support piece 1 is connected with outer tube 2, buffer piece 3 is arranged in guide groove 20, inner tube 4 is partially accommodated in guide groove 20, inner tube 4 is connected with buffer piece 3, buffer piece 3 can generate rebounding force along the axial direction of outer tube 2.When the buffer assembly is applied to cart, the compressed buffer piece 3 rebounds and provides upward thrust to inner tube 4 during the folding process of cart, so as to push inner tube 4 to move in guide groove 20, so that the folding of cart is more labor-saving, and the use experience of user is improved;When opening cart, inner tube 4 moves downward and compresses buffer piece 3, the buffer of inner tube 4 is realized through buffer piece 3, the hard contact between inner tube 4 and support piece 1 is avoided, so as to protect inner tube 4 and support piece 1.

[0044] Specifically, support piece 1 is arranged at the end of guide groove 20 of outer tube 2, and support piece 1 is fixedly connected with outer tube 2.Support piece 1 includes sleeve 10 and shaft core 11, the outer wall of sleeve 10 is connected with the inner wall of outer tube 2 and is fixed, and sleeve 10 and outer tube 2 can be connected by any one of various connection modes such as welding, bonding or screwing;Shaft core 11 is fixed in the inside of sleeve 10, and at least one end of shaft core 11 extends out of the end face of sleeve 10, and the end face of shaft core 11 located in the inside of outer tube 2 is a plane, and one end of buffer piece 3 is connected with the plane;Optionally, the end face of shaft core 11 located in the inside of outer tube 2 can also be convex or concave to limit buffer piece 3.

[0045] In the embodiment, buffer piece 3 is spring or rubber block with high elasticity.Both ends of spring or rubber block are connected with support piece 1 and inner tube 4 respectively and can be disconnected.Spring and rubber block are adapted to guide groove 20 in shape and size, that is, spring and rubber block can generate rebounding force and can be compressed.

[0046] Of course, in other embodiments, buffer piece 3 can also be other elastic structure or made of elastic material, or measures that can buffer the downward movement of inner tube 4.

[0047] In addition, the connection between the buffer 3 and the support 1 and the inner tube 4 can also be in various forms. For example, when the buffer 3 is a spring, one end of the spring is in contact with the support 1 in a detachable manner, and the other end of the spring is fixedly connected with the inner tube 4; or one end of the spring is fixedly connected with the support 1, and the other end of the spring is in contact with the inner tube 4 in a detachable manner; or both ends of the spring are in contact with the support 1 and the inner tube 4 in a detachable manner.

[0048] In the embodiment, the buffer 3 is provided with an elastic clamping piece 5 between the inner tube 4, one end of the elastic clamping piece 5 is fixed on the inner tube 4, the other end of the elastic clamping piece 5 extends out of the end face of the inner tube 4 and is exposed, a clamping groove 50 is formed in the exposed end of the elastic clamping piece 5, the clamping groove 50 is arranged around the circumference of the elastic clamping piece 5, one end of the spring is clamped in the clamping groove 50, thereby providing the inner tube 4 with pushing assistance and buffering. The exposed end of the elastic clamping piece 5 is processed into a smooth ball head, so that the spring can be smoothly clamped into the clamping groove 50.

[0049] Of course, the spring can be directly fixedly connected with the inner tube 4 without the elastic clamping piece 5, for example, the spring is welded to the inner tube 4.

[0050] As an example, the above-mentioned buffer assembly is applied to a cart, which is described in detail as follows.

[0051] Reference Figure 3 With Figure 4 The embodiment of the utility model further provides a cart, which comprises a frame 6, a wheel 7, a wheel support 70 and the above-mentioned buffer assembly, the wheel 7 is arranged on the wheel support 70, the support 1 is connected with the wheel support 70, and the frame 6 is connected with the outer tube 2 and the inner tube 4.

[0052] The frame 6 of the embodiment comprises a front frame 62, a rear frame 63, a side frame 61 and a bottom frame 60, the side frame 61 is arranged on the left and right sides of the bottom frame 60, the front frame 62 and the rear frame 63 are arranged on the front and rear sides of the bottom frame 60 respectively, and the side frame 61, the bottom frame 60, the front frame 62 and the rear frame 63 are all foldable.

[0053] The frame 6 of the embodiment further comprises two first bottom joints 623, two first top joints 624, two second bottom joints 633 and two second top joints 634. The front frame 62 is movably connected to the base frame 60 through the two first bottom joints 623, and is movably connected to the side frame 61 through the two first top joints 624. The rear frame 63 is movably connected to the base frame 60 through the two second bottom joints 633, and is movably connected to the side frame 61 through the two second top joints 634. The two first bottom joints 623 and the two second bottom joints 633 are identical in structure, and each of the first bottom joint 623 and the second bottom joint 633 is provided with a plurality of hinge positions. The two first top joints 624 and the two second top joints 634 are identical in structure, and each of the first top joint 624 and the second top joint 634 is also provided with at least two hinge positions.

[0054] The side frame 61 comprises a plurality of X assemblies, and the number of the X assemblies is at least two. The two X assemblies are arranged side by side. The X assembly is formed by two cross-connected side connecting rods 611. The side connecting rods 611 of adjacent two X assemblies are rotatably connected. The end of the X assembly close to the front frame 62 or the rear frame 63 is respectively hinged to the first bottom joint 623, the second bottom joint 633, the first top joint 624 and the second top joint 634 through the side connecting rod 611.

[0055] The front frame 62 comprises two first vertical rods 621 and two first cross pipes 622. The two first vertical rods 621 are arranged side by side and spaced apart. The two first cross pipes 622 are cross-rotatably connected. The two first cross pipes 622 are located between the two first vertical rods 621. The top end of the two first cross pipes 622 is respectively hinged to the first top joint 624 on the corresponding side. The bottom end of the two first cross pipes 622 is respectively hinged to the first bottom joint 623 on the corresponding side.

[0056] The rear frame 63 is similar to the front frame 62. The rear frame 63 comprises two second vertical rods 631 and two second cross pipes 632. The two second vertical rods 631 are arranged side by side and spaced apart. The two second cross pipes 632 are cross-rotatably connected. The two second cross pipes 632 are located between the two second vertical rods 631. The top end of the two second cross pipes 632 is respectively hinged to the second top joint 634 on the corresponding side. The bottom end of the two second cross pipes 632 is respectively hinged to the second bottom joint 633 on the corresponding side.

[0057] The first vertical rod 621 comprises an outer pipe 2 and an inner pipe 4. The inner pipe 4 is arranged in the guide groove 20 of the outer pipe 2 and can move axially in the guide groove 20. The first top joint 624 is installed at the top end of the inner pipe 4. The first bottom joint 623 is installed at the bottom end of the outer wall of the outer pipe 2. The shaft member 11 is exposed at one end of the end face of the outer pipe 2 and connected to the wheel support 70 of the wheel 7. The wheel 7 is connected to the wheel support 70.

[0058] The second vertical rod 631 also comprises an outer tube 2 and an inner tube 4, the inner tube 4 is arranged in the guide groove 20 of the outer tube 2 and can move axially in the guide groove 20, the second top joint 634 is installed at the top end of the inner tube 4, the second bottom joint 633 is installed at the bottom end outer wall of the outer tube 2, the shaft 11 is exposed at one end of the end face of the outer tube 2 and connected with the wheel support 70 of the wheel 7, and the wheel 7 is connected on the wheel support 70.

[0059] When the stroller is opened, the side connecting rod 611 connected with the first top joint 624 and the second top joint 634, the first cross tube 622 and the second cross tube 632 rotate and push the first top joint 624 and the second top joint 634 to move downward, and then push the inner tube 4 of the first vertical rod 621 and the second vertical rod 631 to move downward along the guide groove 20 of the outer tube 2, the inner tube 4 moves downward to compress the spring on the end face of the support 1, thereby avoiding hard collision between the inner tube 4 and the support 1 when the inner tube 4 moves downward, and avoiding damage to the inner tube 4 and the support 1.

[0060] When the stroller in the open state is folded, the two first cross tubes 622 and the second cross tubes 632 and the side connecting rod 11 rotate relative to each other and drive the inner tube 4 to move upward along the guide groove 20 of the outer tube 2, and the spring compressed when the inner tube 4 moves upward rebounds, and the spring generates an upward pushing force on the inner tube 4 as assistance when folding, thereby making the folding more labor-saving; since the spring is arranged above the wheel support 70, the vibration generated when the stroller is walking will be partially buffered and absorbed by the spring, thereby reducing the vibration transmitted to the stroller and avoiding the articles from falling off.

[0061] The bottom frame 60 comprises a bottom joint 602 and four bottom beams 601, the bottom joint 602 is provided with at least four hinge positions, one end of each of the four bottom beams 601 is hingedly connected to the hinge position of the bottom joint 602, and the other end of each of the four bottom beams 601 is hingedly connected to the two first bottom joints 623 and the two second bottom joints 633, so as to coordinate the folding and unfolding.

[0062] The stroller of the embodiment also comprises a pull rod 8, the pull rod 8 comprises branch rods and a main rod, the two branch rods are rotatably connected to the main rod through a hinge joint, so as to adapt to the folding of the two branch rods when the frame 6 is folded. The two branch rods are rotatably connected to the corresponding first bottom joints 623.

[0063] Optionally, the main rod can also be a telescopic rod, so as to reduce the space occupation when folding.

[0064] The trolley of the embodiment has four wheels 7, which are connected with the two first bottom joints 623 and the two second bottom joints 633 respectively through four wheel supports 70.

[0065] The buffering assembly of the embodiment of the utility model is applied to the trolley, so that the trolley can provide power assistance when being folded, the folding is more labor-saving, buffering of the inner tube 4 can be realized through the buffering piece 3, hard contact of the inner tube 4 and the supporting piece 1 is avoided, so that the inner tube 4 and the supporting piece 1 are protected.

[0066] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A cushioning assembly, characterized by, The application relates to a buffer assembly. The buffer assembly comprises a support (1), an outer tube (2) with a guide groove (20) in the inner part of the outer tube (2), the support (1) being at least partially accommodated in the guide groove (20) and connected with the outer tube (2), a buffer (3) arranged in the guide groove (20), and an inner tube (4) partially accommodated in the guide groove (20) and connected with the buffer (3), the buffer (3) being capable of generating a rebound force in the axial direction of the outer tube (2) and capable of pushing the inner tube (4) to move in the guide groove (20). The support (1) comprises a sleeve (10) connected with the outer tube (2) and an axial core (11) fixed in the sleeve (10). The buffer (3) is a spring or a rubber block, and the two ends of the spring or the rubber block are respectively in contact with the support (1) and the inner tube (4) in a detachable manner. The buffer (3) is a spring, one end of the spring is in contact with the support (1) in a detachable manner, and the other end of the spring is fixedly connected with the inner tube (4).

2. The cushioning assembly of claim 1, wherein, Alternatively, one end of the spring is fixedly connected with the support (1), and the other end of the spring is in contact with the inner tube (4) in a detachable manner.

3. The cushioning assembly of claim 1, wherein, Alternatively, the two ends of the spring are respectively in contact with the support (1) and the inner tube (4) in a detachable manner.

4. The cushioning assembly of claim 3, wherein, The buffer assembly further comprises an elastic clamping piece (5), one end of the elastic clamping piece (5) is connected with the inner tube (4), and the other end of the elastic clamping piece (5) is connected with the buffer (3). The elastic clamping piece (5) is provided with a clamping groove (50), and the end of the buffer (3) is clamped in the clamping groove (50). The buffer (3) is a spring, one end of the spring is fixedly connected with the inner tube (4).

5. The cushioning assembly of any of claims 1-4, wherein, The application relates to a stroller.

6. The cushioning assembly of claim 5, wherein, The stroller comprises a frame (6), wheels (7), a wheel support (70), and the buffer assembly according to any one of claims 1 to 7, the wheels (7) being arranged on the wheel support (70), the support (1) being connected with the wheel support (70), and the frame (6) being connected with the outer tube (2) and the inner tube (4).

7. The cushioning assembly of claim 1, wherein, The frame (6) comprises a front frame (62), a rear frame (63), side frames (61), and a bottom frame (60), the side frames (61) being arranged on the left and right sides of the bottom frame (60), the front frame (62) and the rear frame (63) being arranged on the front and rear sides of the bottom frame (60) respectively, and the side frames (61), the bottom frame (60), the front frame (62), and the rear frame (63) being foldable.

8. A cart characterized by, The stroller further comprises a pull rod (8) connected with the front frame (62). ​ 9. The cart of claim 8, wherein, ​ 10. The cart of claim 9, wherein, ​

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