Cushion rod shock-absorbing structure capable of being adjusted in pitching mode and shock-absorbing vehicle applying cushion rod shock-absorbing structure

Abstract

The utility model provides a cushion rod shock-absorbing structure capable of being adjusted in a pitching mode and a shock-absorbing vehicle using the cushion rod shock-absorbing structure. The cushion rod shock-absorbing structure comprises a connector and a seat tube which are in butt joint up and down. The supporting rod abuts against the seat tube through a reset device and penetrates out of the connector upwards. The first connecting rod is hinged to one side of the connector and provided with a first protruding part, and the first protruding part is hinged to the roller in rolling contact with the supporting rod; the second connecting rod is hinged to the other side of the connector; the connecting rod supports are respectively hinged to the top ends of the first connecting rod and the second connecting rod and are provided with concave cambered surfaces and connecting holes communicated with the concave cambered surfaces; the first sleeve sheet is provided with a convex cambered surface matched with the concave cambered surface and a first through hole matched with the connecting hole; the second sleeve sheet is provided with a concave guide groove and a second through hole matched with the first through hole and communicated with the concave guide groove; the pressing piece is provided with a convex cambered surface matched with the concave guide groove and a mounting hole matched with the second through hole and communicated with the convex cambered surface; and the locking piece is arranged in each hole in a penetrating manner and is matched with the mounting hole to lock or unlock the first sleeve piece and the second sleeve piece.

Description

TECHNICAL FIELD

[0001] The utility model relates to the shock absorbing vehicle manufacturing technical field, especially to a cushion rod shock absorbing structure of pitch adjustment and the shock absorbing vehicle of applying it. BACKGROUND

[0002] The world today advocates energy saving and emission reduction, and China is a big country of bicycles and electric vehicles, and various bicycles, electric vehicles and scooters are widely used. Among them, the shock absorbing vehicle has become an important category in bicycles, electric vehicles and scooters because it can buffer and absorb shock of the seat cushion, avoid bumping and improve comfort when riding.

[0003] The existing shock absorbing vehicle adopts a four-bar linkage mechanism arranged on the top of the seat tube as a shock absorbing structure, and the seat cushion is installed on the top of the shock absorbing structure through a pitch adjustment structure. The seat cushion pitch adjustment structure usually includes a cross pipe seat installed on the top of the four-bar linkage mechanism, and a pair of seat arch clamping pieces are locked on the left and right sides of the cross pipe seat through screws. The seat arch clamping pieces are provided with clamping grooves for clamping the seat arch at the bottom of the seat cushion. The combination of this type of shock absorbing structure and pitch adjustment structure has the following defects: 1. Since the four-bar linkage mechanism is arranged on the top of the seat tube, the height of the seat cushion is greatly increased. The pitch adjustment structure with the seat arch clamping pieces locked on the sides of the cross pipe seat on the top of the four-bar linkage mechanism further increases the height of the seat cushion due to the large height of the cross pipe seat, which makes it difficult for riders with low height to step on the pedal or need to stretch their legs when riding, causing difficulty in riding; 2. This type of pitch adjustment structure requires the screws connected between the pair of seat arch clamping pieces and the cross pipe seat to be completely removed, and then the seat cushion is manually adjusted to change the pitch angle relative to the horizontal plane, which makes the pitch adjustment operation laborious and inconvenient, affecting the user experience. In addition, the existing shock absorbing vehicle using a four-bar linkage mechanism as a shock absorbing structure has a large gap between each connecting rod and the support rod of the four-bar linkage mechanism, and the fingers are easily pinched.

[0004] The existing pitch adjustment structure includes a connecting rod support hingedly connected to the top end of a pair of upper connecting rods of a four-bar linkage mechanism at both ends of the bottom, and the top is an inclined surface and the middle is provided with a receiving cavity. The high and low sides of the inclined surface are provided with front and rear through holes communicating with the receiving cavity. One end of the adjusting screw is arranged in the receiving cavity, the other end is connected to the front hole of the adjusting bracket through the front through hole, and the fixing screw is arranged between the rear hole of the adjusting bracket and the rear through hole of the inclined surface.

[0005] The pitch adjustment structure has a high height due to the internal receiving cavity and the top inclined surface of the connecting rod support, and the structure is not compact. The effect of reducing the overall height of the seat cushion is limited. In addition, the pitch adjustment structure requires the operation of the front and rear pair of screws to achieve pitch adjustment, which has the defects of complex structure, more components, high cost and tedious operation. UTILITY MODEL CONTENTS

[0006] The utility model provides a portable vehicle of cushion rod shock absorbing structure of pitch adjustment can be solved the height of the seat cushion pitch adjustment structure of the prior art shock absorbing vehicle is big and the technical problem that structure and adjustment operation are complex.

[0007] To solve the above problems, the utility model adopts the technical scheme of:

[0008] The utility model provides a cushion rod shock absorbing structure of pitch adjustment can be, including:

[0009] Seat pipe;

[0010] Joint has a via hole matched with the inner hole of seat pipe, and the joint is connected to the top end of the seat pipe, and the via hole is communicated with the inner hole;

[0011] Supporting rod, the bottom end of supporting rod is abutted to the bottom end of seat pipe through reset device, and the top end of supporting rod is upwards through the via hole and extends out of the joint;

[0012] First connecting rod, the bottom end of first connecting rod is hinged to one side of joint, and one side of first connecting rod is provided with first protruding part, and first protruding part is hinged with a roller, and the roller is rollably contacted with the top end of supporting rod;

[0013] Second connecting rod, the bottom end of second connecting rod is hinged to the opposite side of joint;

[0014] Connecting rod support, one end of the bottom of connecting rod support is hinged to the top end of first connecting rod, and the other end of the bottom of connecting rod support is hinged to the top end of second connecting rod; The top of connecting rod support is provided with recessed arc surface, and the bottom of connecting rod support is provided with connecting hole communicated with recessed arc surface;

[0015] First sleeve piece, the bottom of first sleeve piece is provided with convex arc surface matched with recessed arc surface, and first sleeve piece is provided with first perforation matched with connecting hole;

[0016] Second sleeve piece, the top of second sleeve piece is provided with recessed guide groove, and second sleeve piece is provided with second perforation matched with first perforation and communicated with recessed guide groove;

[0017] Compression part, the bottom of compression part is provided with convex arc surface matched with recessed guide groove, and compression part is provided with mounting hole matched with second perforation and communicated with convex arc surface;

[0018] Locking part, threaded in connecting hole, first perforation, second perforation and mounting hole, and first sleeve piece and second sleeve piece are locked or unlocked in connecting rod support through the cooperation of locking part end and mounting hole.

[0019] Preferably, first perforation and second perforation are both strip-shaped clearance holes, and the locking part is locking screw;

[0020] When the locking piece is loosely fitted with the mounting hole, the first sleeve and the first sleeve are unlocked, and the first sleeve and the second sleeve can slide along the concave arc surface through the convex arc surface under the allowance of the locking piece to the first perforation and the second perforation, so as to adjust the pitch attitude of the first sleeve and the second sleeve.

[0021] Preferably, the concave arc surface is connected to the opposite ends of the top surface of the connecting rod support, and two groups of first tooth structures are respectively arranged at the opposite ends of the top surface of the connecting rod support; the convex arc surface is provided with second tooth structures matched with the first tooth structures; and the first perforation is arranged between the two groups of first tooth structures.

[0022] When the first sleeve and the second sleeve are unlocked, the first sleeve and the second sleeve can be adjusted at a fixed angle along the concave arc surface through the corresponding cooperation of the second tooth structures and the first tooth structures.

[0023] Preferably, the bottom surface of the concave guide groove is a concave arc surface matched with the convex arc surface, and the mounting hole is a threaded hole matched with the external thread of the end of the locking piece.

[0024] When the first sleeve and the second sleeve slide along the concave arc surface through the convex arc surface, the first sleeve and the second sleeve simultaneously slide along the convex arc surface through the concave arc surface, so as to synchronously adjust the pitch attitude of the first sleeve and the second sleeve.

[0025] Preferably, the top surface of the connecting rod support is provided with an arc-shaped through slot penetrating through the opposite sides of the connecting rod support, and the concave arc surface is the bottom surface of the arc-shaped through slot.

[0026] Preferably, the seat pipe comprises:

[0027] a pipe body;

[0028] a bottom cover connected to the bottom end of the pipe body and closing the inner hole;

[0029] the reset device is abutted between the bottom cover and the supporting rod.

[0030] Preferably, a transition conical surface is arranged on the outer side surface of the pipe body close to the top end of the pipe body, and a sleeving part with a gradually reduced outer diameter from the top end to the bottom end of the pipe body is formed between the transition conical surface and the top end of the pipe body.

[0031] The shape of the through hole is matched with the shape of the sleeving part, and a mounting conical surface matched with the transition conical surface is arranged at the connecting through hole of the joint bottom end.

[0032] The joint is sleeved outside the sleeving part through the through hole, and is fastened to the top end of the pipe body through the cooperation of the mounting conical surface and the transition conical surface.

[0033] Further, the pitch-adjustable seat cushion rod shock-absorbing structure further comprises:

[0034] The wear-resistant sleeve is inserted into the inner hole and supported on the top end of the sleeve joint by the annular flange.

[0035] The utility model also provides a shock absorbing vehicle, including cushion, still include the cushion rod shock absorbing structure of pitchable adjustment of above -mentioned, the cushion is connected between first sleeve piece and second sleeve piece,

[0036] When the first sleeve piece and the second sleeve piece are unlocked, the pitch attitude of the cushion can be adjusted by adjusting the installation position of the first sleeve piece and the second sleeve piece relative to the connecting rod support.

[0037] Preferably, a pair of first seat arch clamping grooves are respectively arranged on the two sides of the top of the first sleeve piece, a pair of second seat arch clamping grooves matched with the first seat arch clamping grooves are respectively arranged on the two sides of the bottom of the second sleeve piece, and a pair of elastic seat arches on the bottom of the cushion are clamped between the first seat arch clamping grooves and the corresponding second seat arch clamping grooves.

[0038] Compared with the prior art, the utility model has the following beneficial effects:

[0039] The utility model provides a portable vehicle of cushion rod shock absorbing structure of pitchable adjustment and application thereof, its connecting rod support inside pitch adjusting structure does not need to set up the accommodating cavity, and the top does not need to set up the inclined plane, and the pitch adjusting structure of connecting rod support top adopts a pair of thin sleeve piece and only sets up one hole position, and then sets up a small and embeds the surface recess guide groove of the sleeve piece top in the top of the sleeve piece, and the pressing piece with the installation hole, and the connecting rod support only needs to set up the through -hole matched with the corresponding hole position of a pair of escape, passes through the corresponding hole position of connecting rod support, a pair of sleeve piece and pressing piece through single screw as locking piece, and the pitch angle of the cushion installed between a pair of sleeve piece can be adjusted by loosening the single screw, and the structure of the cushion rod shock absorbing structure of pitchable adjustment is compact, and the overall height of the connected cushion is significantly reduced, and the pitch adjusting can be realized by only loosening the single screw without operating the front and rear screws. In conclusion, the cushion rod shock absorbing structure of pitchable adjustment provided by the utility model has the advantages of compact and simple structure, reduced overall installation height of the cushion, fewer components, lower cost, convenient and fast pitch angle adjusting operation of the cushion, etc. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical scheme provided by the utility model, the utility model will be described in detail below in combination with embodiments and drawings. It should be understood that the embodiments and drawings described in the following specific embodiments and drawings in the description are only some embodiments of the utility model, and those skilled in the art can change the drawings under the concept of the utility model.

[0041] Figure 1 The assembly perspective structure schematic diagram of the embodiment of the cushion rod shock absorption structure provided by the utility model Figure 1 ;

[0042] Figure 2 The assembly perspective structure schematic diagram of the embodiment of the cushion rod shock absorption structure provided by the utility model Figure 2 ;

[0043] Figure 3 For Figure 2 The structure schematic diagram of the pair of locking pieces and the elastic seat bow provided for the cushion rod shock absorption structure in the

[0044] Figure 4 The assembly front view structure schematic diagram of the embodiment of the cushion rod shock absorption structure provided by the utility model

[0045] Figure 5 The assembly rear view structure schematic diagram of the embodiment of the cushion rod shock absorption structure provided by the utility model

[0046] Figure 6 The assembly side view structure schematic diagram of the embodiment of the cushion rod shock absorption structure provided by the utility model

[0047] Figure 7 The assembly top view structure schematic diagram of the embodiment of the cushion rod shock absorption structure provided by the utility model

[0048] Figure 8 The assembly bottom view structure schematic diagram of the embodiment of the cushion rod shock absorption structure provided by the utility model

[0049] Figure 9 The explosion perspective structure schematic diagram of the embodiment of the cushion rod shock absorption structure provided by the utility model

[0050] Figure 10 For Figure 9 The local enlarged structure schematic diagram of the A area of the cushion rod shock absorption structure in the

[0051] Among them, the main marks of each drawing in the figure are as follows:

[0052] 1, seat pipe; 11, pipe body; 111, inner hole; 112, transition cone; 113, sleeve part; 12, bottom cover; 121, lower protruding column; 13, first lower pipe sleeve; 14, second lower pipe sleeve; 15, wear-resistant sleeve; 151, annular flange; 2, joint; 21, through hole; 3, support rod; 31, upper protruding column; 32, limiting protruding block; 4, reset device; 5, first connecting rod; 51, first protruding part; 511, first protruding seat; 512, shaft hole; 52, roller; 521, through hole; 53, first main body part; 54, first upper extension part; 541, first upper ring sleeve; 55, first lower extension part; 551, first lower ring sleeve; 56, first lower hinge shaft; 57, first upper hinge shaft; 571, oil storage groove; 58, rotating shaft; 6, second connecting rod; 61, second protruding part; 611, second protruding seat; 62, second main body part; 63, second upper extension part; 631, second upper ring sleeve; 64, second lower extension part; 641, second lower ring sleeve; 65, second lower hinge shaft; 66, second upper hinge shaft; 7, connecting rod support; 71, arc-shaped through slot; 711, concave arc surface; 7111, first protruding tooth structure; 72, connecting hole; 73, first upper pipe sleeve; 74, second upper pipe sleeve; 8, first sleeve piece; 81, protruding arc surface; 811, second protruding tooth structure; 82, first through hole; 83, first seat bow clamping groove; 9, second sleeve piece; 91, recessed guide groove; 92, second through hole; 93, second seat bow clamping groove; 10, pressing part; 101, protruding arc surface; 102, mounting hole; 20, locking part; 30, elastic seat bow. DETAILED DESCRIPTION

[0053] In order to make the technical problems, technical schemes and beneficial effects of the utility model clearer, the utility model will be further described in detail below in combination with the drawings and embodiments. Figures 1-10 DETAILED DESCRIPTION

[0054] Please refer to Figures 1-10 The utility model provides a seat cushion rod shock absorption structure of pitch adjustment, which comprises:

[0055] The seat pipe 1 is in an upright position and has a vertical extending inner hole 111; the joint 2 has a through hole 21 matched with the inner hole 111 of the seat pipe 1, and the joint 2 is connected to the top end of the seat pipe 1, and the through hole 21 is communicated with the inner hole 111; the seat pipe 1 and the joint 2 can be connected in a split body mode or integrally formed; the bottom end of the support rod 3 extends into the inner hole 111 and abuts against the bottom end of the seat pipe 1 through the reset device 4, and the top end of the support rod 3 extends out of the inner hole 111, penetrates through the through hole 21 and extends out of the joint 2 upwardly;

[0056] The first connecting rod 5 is hinged at the bottom end to one side of the joint 2, and one side of the first connecting rod 5 is provided with a first protruding part 51, and the first protruding part 51 is hinged to a roller 52, and the roller 52 is rollably contacted to the top end of the supporting rod 3; the second connecting rod 6 is hinged at the bottom end to the other side of the joint 2 opposite to the first connecting rod 5;

[0057] The connecting rod support 7 is hinged at the bottom end to the top end of the first connecting rod 5, and the other end of the bottom of the connecting rod support 7 is hinged to the top end of the second connecting rod 6; the top of the connecting rod support 7 is provided with a recessed arc surface 711, and the bottom of the connecting rod support 7 is provided with a connecting hole 72 communicated with the recessed arc surface 711;

[0058] The first sleeve piece 8 is provided at the bottom with a protruding arc surface 81 matched with the recessed arc surface 711, and the first sleeve piece 8 is provided with a first perforation 82 matched with the connecting hole 72; the second sleeve piece 9 is provided at the top with a recessed guide groove 91, and the second sleeve piece 9 is provided with a second perforation 92 matched with the first perforation 82 and communicated with the recessed guide groove 91; the first sleeve piece 8 and the second sleeve piece 9 are used for clamping and installing the seat cushion of the portable vehicle.

[0059] The pressing part 10 is provided at the bottom with a protruding arc surface 101 matched with the recessed guide groove 91, and the pressing part 10 is provided with a mounting hole 102 matched with the second perforation 92 and communicated with the protruding arc surface 101; the locking part 20 is threaded in the connecting hole 72, the first perforation 82, the second perforation 92 and the mounting hole 102, and the first sleeve piece 8 and the second sleeve piece 9 are locked or unlocked on the connecting rod support 7 through cooperation of the locking part 20 at the end with the mounting hole 102.

[0060] The first connecting rod 5, the second connecting rod 6, the connecting rod support 7 and the supporting rod 3 constitute a four-connecting-rod mechanism, and the connecting rod support 7 is provided with an upward buffering force through the reset device 4 abutting between the supporting rod 3 and the bottom end of the seat tube 1, so that the connecting rod support 7 and the load thereof are stably vertically lifted and moved through cooperation of the mechanism movement of the four-connecting-rod mechanism and the buffering action of the reset device 4 when the connecting rod support 7 bears a certain load, and buffering and shock absorption are realized in the process of the vertical lifting and movement of the connecting rod support 7 and the load thereof, and the comfort of the user is improved.

[0061] Meanwhile, the seat cushion rod shock absorption structure capable of adjusting the pitch provided by the utility model can realize the pitch angle adjustment of the seat cushion installed between the first sleeve piece 8 and the second sleeve piece 9 through loosening and tightening of the single locking part 20 by threading the single locking part 20 through the corresponding hole positions of the connecting rod support 7, the first sleeve piece 8, the second sleeve piece 9 and the pressing part 10, and the seat cushion rod shock absorption structure capable of adjusting the pitch is compact, and the overall height of the connected seat cushion is significantly reduced; meanwhile, the pitch adjustment can be quickly and conveniently realized only by performing simple loosening and tightening operation on the single locking part 20.

[0062] Please see Figure 1 、 9 , 10, in this embodiment, the first perforation 82 and the second perforation 92 are both strip-shaped clearance holes, and the locking member 20 is a locking screw.

[0063] When the outer thread at the end of the locking member 20 is loosely fitted with the mounting hole 102 on the pressing member 10, the first sleeve 8 and the first sleeve 8 are unlocked, at which time the first sleeve 8 and the second sleeve 9 can slide along the surface of the concave arc surface 711 through the convex arc surface 81 under the clearance action of the first perforation 82 and the second perforation 92 on the locking member 20, realizing the pitch attitude adjustment of the first sleeve 8 and the second sleeve 9 to drive the seat cushion pitch fine adjustment connected thereto.

[0064] Please see Figure 3 , in another embodiment, the locking member 20 is provided with a pair, and correspondingly, the connecting hole 72 on the connecting rod support 7, the first perforation 82 on the first sleeve 8, the second perforation 92 on the second sleeve 9 and the mounting hole 102 on the pressing member 10 are all spaced apart from each other by a pair of locking members 20. By passing through the corresponding hole positions of the connecting rod support 7, the first sleeve 8 and the second sleeve 9 and the pressing member 10 through a pair of locking members 20, the first sleeve 8 and the second sleeve 9 are locked on the connecting rod support 7 more tightly, so that the installed seat cushion is more stable.

[0065] Please see Figure 1 、 9 , 10, the concave arc surface 711 is connected to the top surface of the connecting rod support 7, and two groups of first tooth structures 7111 are respectively arranged at opposite ends of the top surface, and the surface of the convex arc surface 81 is provided with a continuous arrangement of second tooth structures 811 matched with the first tooth structures 7111, and the first perforation 82 is arranged between the two groups of first tooth structures 7111;

[0066] When the first sleeve 8 and the second sleeve 9 are unlocked, through the corresponding cooperation of the second tooth structure 811 and the first tooth structure 7111, the first sleeve 8 and the second sleeve 9 can be adjusted at a fixed angle along the surface of the concave arc surface 711 with the tooth pitch of the first tooth structure 7111 as the unit, so as to drive the seat cushion to adjust the pitch attitude at a fixed angle.

[0067] Please see Figure 1 、 9 , 10, in this embodiment, the bottom surface of the concave guide groove 91 is a concave arc surface 711 matched with the convex arc surface 101, and the mounting hole 102 is a threaded hole matched with the outer thread at the end of the locking member 20.

[0068] When the first and second sleeves 8 and 9 slide along the concave arc surface 711 by the convex arc surface 81, the first and second sleeves 8 and 9 simultaneously slide along the convex arc surface 101 by the concave arc surface 711, so as to realize the synchronous pitch adjustment of the first and second sleeves 8 and 9.

[0069] Please refer to Figure 1 、 9 , 10, as the preferred embodiment of the present embodiment, the concave arc surface 711 and the convex arc surface 101 are both circular arc surfaces.

[0070] Please refer to Figure 1 、 9 , 10, in the present embodiment, the top surface of the connecting rod support 7 is provided with an arc-shaped through slot 71 penetrating through the opposite sides of the connecting rod support 7, and the concave arc surface 711 is the bottom surface of the arc-shaped through slot 71.

[0071] As the preferred embodiment of the present embodiment, the concave arc surface 711 is a circular arc surface.

[0072] As a more preferred embodiment of the present embodiment, the first and second sleeves 8 and 9 are provided with at least one hollow structure for reducing the weight of the pitch-adjustable seat cushion rod shock-absorbing structure.

[0073] Please refer to Figures 1-6 , 9-10, in the present embodiment, the bottom end of the first connecting rod 5 is hinged to one side of the seat tube 1 at a height higher than that of the bottom end of the second connecting rod 6 hinged to the opposite side of the seat tube 1.

[0074] Please refer to Figures 1-6 , 9-10, in the present embodiment, the top of the seat tube 1 is provided with a first lower tube sleeve 13 on one side, and a second lower tube sleeve 14 on the opposite side of the first lower tube sleeve 13, and the height of the first lower tube sleeve 13 is higher than that of the second lower tube sleeve 14; the bottom of the connecting rod support 7 is provided with a first upper tube sleeve 73 on one end, and a second upper tube sleeve 74 on the other end, and the height of the first upper tube sleeve is higher than that of the second upper tube sleeve 74.

[0075] Please refer to Figures 1-6, 9-10, as the preferred embodiment of the present embodiment, the first link 5 and the second link 6 are both H-shaped, the first link 5 comprises: a first body part 53 in the shape of a rectangular block, and a pair of first upper extension parts 54 and a pair of first lower extension parts 55 respectively provided at opposite ends of the first body part 53, the pair of first upper extension parts 54 and the pair of first lower extension parts 55 are respectively correspondingly spaced apart, the distal ends of the pair of first upper extension parts 54 away from the first body part 53 are provided with a first upper ring sleeve 541 matched with the first upper sleeve 73, the distal ends of the pair of first lower extension parts 55 away from the first body part 53 are provided with a first lower ring sleeve 551 matched with the first lower sleeve 13, the pair of first lower ring sleeves 551 are respectively sleeved on the axial two sides of the first lower sleeve 13, and a first lower hinge shaft 56 is arranged in the pair of first lower ring sleeves 551 and the first lower sleeve 13, so as to hinge the bottom end of the first link 5 to one side of the seat tube 1; at the same time, the pair of first upper ring sleeves 541 are respectively sleeved on the axial two sides of the first upper sleeve 73, and a first upper hinge shaft 57 is arranged in the pair of first upper ring sleeves 541 and the first upper sleeve 73, so as to hinge the top end of the first link 5 to one side of the link support 7.

[0076] The second link 6 comprises:

[0077] a second body part 62 in the shape of a rectangular block, and a pair of second upper extension parts 63 and a pair of second lower extension parts 64 respectively provided at opposite ends of the second body part 62, the pair of second upper extension parts 63 and the pair of second lower extension parts 64 are respectively correspondingly spaced apart, the distal ends of the pair of second upper extension parts 63 away from the second body part 62 are provided with a second upper ring sleeve 631 matched with the second upper sleeve 74, the distal ends of the pair of second lower extension parts 64 away from the first body part 53 are provided with a second lower ring sleeve 641 matched with the second lower sleeve 14, the pair of second lower ring sleeves 641 are respectively sleeved on the axial two sides of the second lower sleeve 14, and a second lower hinge shaft 65 is arranged in the pair of second lower ring sleeves 641 and the second lower sleeve 14, so as to hinge the bottom end of the second link 6 to the other side of the seat tube 1; at the same time, the pair of second upper ring sleeves 631 are respectively sleeved on the axial two sides of the second upper sleeve 74, and a second upper hinge shaft 66 is arranged in the pair of second upper ring sleeves 631 and the second upper sleeve 74, so as to hinge the top end of the second link 6 to the other side of the link support 7.

[0078] Please refer to Figures 1-6 , 9-10, in the present embodiment, the bottom end and the top end of the first link 5 are respectively hinged to the front side of the seat tube 1 and the front side of the link support 7, and the bottom end and the top end of the second link 6 are respectively hinged to the rear side of the seat tube 1 and the rear side of the link support 7.

[0079] In other embodiments (not shown in the drawings), the first link 5 and the second link 6 are respectively arranged on the front side and the rear side of the seat tube 1, and the first link 5 and the second link 6 are respectively connected to the left side and the right side of the seat tube 1 through a pair of connecting brackets (not shown in the drawings). The first lower tube sleeve 13 and the second lower tube sleeve 14 are arranged at the ends of the pair of connecting brackets away from the seat tube 1, which extend from the left side and the right side of the seat tube 1 to the front side and the rear side of the seat tube 1.

[0080] Please refer to Figures 1-6 , 9-10, in this embodiment, the first protruding part 51 is a pair of first protruding seats 511 arranged on one side of the first main body part 53 of the first link 5 facing the second link 6, and the first protruding seats 511 are respectively provided with a pair of shaft holes 512. The roller 52 is provided with a through hole 521 matched with the shaft hole 512. The pair of first protruding seats 511 are sleeved on the axial two sides of the roller 52, and the shaft 58 is inserted into the pair of shaft holes 512 and the through hole 521 to rotatably connect the roller 52 to the first protruding part 51 and rollably contact the top end of the support rod 3.

[0081] Please refer to Figure 1 , 9 , 10, in this embodiment, the two ends of the first lower hinge shaft 56, the first upper hinge shaft 57, the second lower hinge shaft 65, the second upper hinge shaft 66 and the shaft 58 are provided with oil storage grooves 571 to form a containing space for storing lubricating oil between the oil storage grooves 571 and the mounting holes, thereby improving the lubricity when the shaft rotates and prolonging the service life.

[0082] Please refer to Figures 1-10 , in this embodiment, the second link 6 is also provided with a second protruding part 61 on the side facing the first link 5. The second protruding part 61 is a pair of second protruding seats 611 arranged on one side of the second main body part 62 of the second link 6 facing the first link 5. The pitch-adjustable seat cushion rod shock-absorbing structure further comprises:

[0083] The limiting protrusion 32 is arranged on the side of the part of the support rod 3 extending upwardly to the joint 2 facing the second link 6, and the size of the limiting protrusion 32 is matched with the distance between the pair of second protruding seats 611.

[0084] When the second link 6 is turned close to the support rod 3, the limiting protrusion 32 extends into the pair of second protruding seats 611. When the second link 6 is turned close to the support rod 3 to the limit position, the second main body part 62 of the second link 6 facing the first link 5 just abuts against the limiting protrusion 32, so as to limit the maximum turning angle of the second link 6 to the limit position when the second link 6 is turned close to the support rod 3.

[0085] Please refer to Figures 1-10The first protruding part 51, the second protruding part 61 and the roller 52 are arranged between the first connecting rod 5, the second connecting rod 6, the connecting rod support 7 and the support rod 3, so that the gap between the first connecting rod 5, the second connecting rod 6, the connecting rod support 7 and the support rod 3 is reduced, and the safety hazard that the fingers of a user are clamped in the gap due to negligence is avoided.

[0086] Please refer to Figure 1 、 9 , 10In the embodiment, the seat pipe 1 comprises:

[0087] The pipe body 11; the bottom cover 12 is threadedly or adhesively connected to the bottom end of the pipe body 11 and closes the inner hole 111 of the pipe body 11; the reset device 4 abuts between the bottom cover 12 and the support rod 3.

[0088] The user moves the joint 2 close (upward) or away (downward) by rotating the bottom cover 12, so as to adjust the distance between the bottom cover 12 and the joint 2, thereby adjusting the pre-tightening degree of the reset device 4.

[0089] Please refer to Figure 1 、 9 , 10In the embodiment, the outer side of the pipe body 11 is provided with a transition taper surface 112 close to the top end of the pipe body 11, and the transition taper surface 112 and the top end of the pipe body 11 form a sleeve joint part 113 with a smaller outer diameter than the bottom end of the pipe body 11; the inner surface shape of the through hole 21 matches the outer surface shape of the sleeve joint part 113, and the bottom end of the joint 2 is provided with a mounting taper surface (not shown in the figure) matched with the transition taper surface 112 at the position connected with the through hole 21;

[0090] The joint 2 is sleeved outside the sleeve joint part 113 through the through hole 21, and is fastened to the top end of the pipe body 11 through the cooperation of the mounting taper surface and the transition taper surface 112.

[0091] Please refer to Figure 1 、 9 , 10As a preferred embodiment of the embodiment, the mounting taper surface and the transition taper surface 112 are coated with an adhesive at the cooperation position, so as to improve the fastening of the joint 2 and the seat pipe 1.

[0092] Please refer to Figure 1 、 9 , 10In the embodiment, the pitch-adjustable seat cushion rod shock absorption structure further comprises:

[0093] The wear-resistant sleeve 15 matches the shape of the inner hole 111 of the seat pipe 1, the top end of the wear-resistant sleeve 15 is provided with an annular flange 151, the wear-resistant sleeve 15 is inserted into the inner hole 111, and the annular flange 151 supports the top end of the sleeve joint part 113.

[0094] Please refer to Figure 1 , 9 ,10As a more preferred embodiment of the present embodiment, the wear-resistant sleeve 15 is made of rubber, plastic or metal.

[0095] Please refer to Figure 1 , 9 ,10In this embodiment, the top end of the bottom cover 12 is provided with a lower protruding column 121, the bottom end of the supporting rod 3 is provided with an upper protruding column 31, and the reset device 4 is a spring. The two ends of the spring (reset device 4) are respectively abutted between the upper protruding column 31 and the lower protruding column 121.

[0096] As a preferred embodiment of the present embodiment, the reset device 4 can also be replaced by a gas spring, a high-strength glue, a gas cylinder or other linear reset devices instead of a spring.

[0097] The utility model also provides a kind of shock-absorbing vehicle (not shown in the drawing), including base (not shown in the drawing) and seat cushion (not shown in the drawing), still including the above-mentioned adjustable seat cushion rod shock-absorbing structure, seat pipe 1 is installed on base, seat cushion is connected between first sleeve piece 8 and second sleeve piece 9.

[0098] When first sleeve piece 8 and second sleeve piece 9 are unlocked, the installation position of first sleeve piece 8 and second sleeve piece 9 relative to connecting rod support 7 can be adjusted to realize the pitch adjustment of seat cushion.

[0099] Please refer to Figures 1-10 , in this embodiment, the top of first sleeve piece 8 is respectively provided with a pair of first seat bow clamping grooves 83 on both sides, and the bottom of second sleeve piece 9 is respectively provided with a pair of second seat bow clamping grooves 93 matched with first seat bow clamping grooves 83, and a pair of elastic seat bows 30 at the bottom of seat cushion are respectively clamped between a pair of first seat bow clamping grooves 83 and corresponding second seat bow clamping grooves 93.

[0100] Please refer to Figure 1 , 9 ,10As a more preferred embodiment of the present embodiment, the width dimension of first sleeve piece 8 and second sleeve piece 9 in the axial direction parallel to arc-shaped through groove 71 is greater than the width dimension of connecting rod support 7 in the axial direction parallel to arc-shaped through groove 71, so that the left and right side ends of first sleeve piece 8 and second sleeve piece 9 in the width direction respectively extend to the left and right sides of connecting rod support 7, and a pair of first seat bow clamping grooves 83 and a pair of second seat bow clamping grooves 93 are respectively arranged on the left and right side ends of first sleeve piece 8 and second sleeve piece 9, so that a pair of elastic seat bows 30 at the bottom of seat cushion can respectively extend to the left and right sides of connecting rod support 7 and be respectively clamped between two groups of second seat bow clamping grooves 93 and first seat bow clamping grooves 83 arranged in upper and lower abutment.

[0101] In this embodiment, the shock-absorbing vehicle is a bicycle, a scooter, an electric vehicle or a folding vehicle.

[0102] In one embodiment, the above-mentioned base can also be replaced by a frame.

[0103] In another embodiment, the shock-absorbing vehicle can also be a wheelchair vehicle.

[0104] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, and those skilled in the art should understand that any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pitch-adjustable seat-cushion-rod suspension structure characterized by comprising: The utility model relates to a seat tube (1) and a joint (2) connected to the top end of the seat tube (1), wherein the joint (2) has a through hole (21) matched with the inner hole (111) of the seat tube (1), and the through hole (21) is communicated with the inner hole (111); a support rod (3) is arranged on the joint (2), wherein the bottom end of the support rod (3) is abutted against the bottom end of the seat tube (1) through a reset device (4), and the top end of the support rod (3) penetrates through the through hole (21) and extends out of the joint (2); a first connecting rod (5) is arranged on one side of the joint (2), wherein the bottom end of the first connecting rod (5) is hinged, one side of the first connecting rod (5) is provided with a first protruding part (51), the first protruding part (51) is hinged with a roller (52), and the roller (52) is rollably contacted with the top end of the support rod (3); a second connecting rod (6) is arranged on the opposite side of the joint (2); a connecting rod support (7) is arranged on the top end of the first connecting rod (5) and the top end of the second connecting rod (6), wherein the bottom end of the connecting rod support (7) is hinged, the top of the connecting rod support (7) is provided with a concave arc surface (711), the bottom of the connecting rod support (7) is provided with a connecting hole (72) communicated with the concave arc surface (711); a first sleeve piece (8) is arranged on the connecting rod support (7), wherein the bottom of the first sleeve piece (8) is provided with a convex arc surface (81) matched with the concave arc surface (711), and the first sleeve piece (8) is provided with a first perforation (82) matched with the connecting hole (72); a second sleeve piece (9) is arranged on the connecting rod support (7), wherein the top of the second sleeve piece (9) is provided with a concave guide groove (91), and the second sleeve piece (9) is provided with a second perforation (92) matched with the first perforation (82) and communicated with the concave guide groove (91); a pressing part (10) is arranged on the connecting rod support (7), wherein the bottom of the pressing part (10) is provided with a convex arc surface (101) matched with the concave guide groove (91), and the pressing part (10) is provided with a mounting hole (102) matched with the second perforation (92) and communicated with the convex arc surface (101); a locking part (20) is arranged in the connecting hole (72), the first perforation (82), the second perforation (92) and the mounting hole (102), and the first sleeve piece (8) and the second sleeve piece (9) are locked or unlocked on the connecting rod support (7) through cooperation of the locking part (20) at the end and the mounting hole (102). The first perforation (82) and the second perforation (92) are strip-shaped clearance holes, and the locking part (20) is a locking screw. When the locking part (20) is loosely matched with the mounting hole (102), the first sleeve piece (8) and the second sleeve piece (9) are unlocked, the first sleeve piece (8) and the second sleeve piece (9) can slide along the surface of the concave arc surface (711) through the convex arc surface (81) under the clearance effect of the first perforation (82) and the second perforation (92) on the locking part (20), so as to realize the pitch attitude adjustment of the first sleeve piece (8) and the second sleeve piece (9). ​ ​ ​ ​ ​ ​ ​ ​ 2. The pitch adjustable seat pan rod suspension structure of claim 1 wherein, ​ ​ 3. The pitch adjustable seat pan lever shock structure of claim 2, wherein, The concave arc surface (711) is connected to the opposite ends of the top surface of the connecting rod support (7), and two groups of first tooth structures (7111) are respectively arranged on the opposite ends of the concave arc surface (711); the convex arc surface (81) is provided with second tooth structures (811) matched with the first tooth structures (7111); and the first through hole (82) is arranged between the two groups of first tooth structures (7111). When the first sheet (8) and the second sheet (9) are unlocked, the first sheet (8) and the second sheet (9) can be adjusted in a fixed angle pitch attitude by the corresponding matching of the second tooth structures (811) and the first tooth structures (7111) along the surface of the concave arc surface (711) with the tooth pitch of the first tooth structures (7111) as the unit.

4. The tilt-adjustable seat-cushion-rod suspension structure of claim 2, wherein The bottom surface of the concave guide groove (91) is a concave arc surface (711) matched with the convex arc surface (101), and the mounting hole (102) is a threaded hole matched with the external thread at the end of the locking piece (20). When the first sheet (8) and the second sheet (9) slide along the surface of the concave arc surface (711) through the convex arc surface (81), the first sheet (8) and the second sheet (9) simultaneously slide along the convex arc surface (101) through the concave arc surface (711), so as to realize the synchronous pitch attitude adjustment of the first sheet (8) and the second sheet (9).

5. A pitch adjustable seat pan lever shock structure according to any one of claims 1-4, characterized in that The top surface of the connecting rod support (7) is provided with an arc-shaped through groove (71) penetrating through the opposite sides of the connecting rod support (7), and the concave arc surface (711) is the bottom surface of the arc-shaped through groove (71).

6. A pitch adjustable seat pan lever shock structure according to any one of claims 1-4, characterized in that The seat pipe (1) comprises: a pipe body (11); a bottom cover (12) connected to the bottom end of the pipe body (11) and closing the inner hole (111); the reset device (4) is abutted between the bottom cover (12) and the supporting rod (3).

7. The pitch adjustable seat pan lever shock structure of claim 6, wherein, The outer side surface of the pipe body (11) is provided with a transition conical surface (112) near the top end of the pipe body (11), and the transition conical surface (112) and the top end of the pipe body (11) form a sleeving part (113) with a smaller outer diameter than the bottom end of the pipe body (11); the shape of the through hole (21) is matched with the shape of the sleeving part (113), and the bottom end of the joint (2) is provided with a mounting conical surface matched with the transition conical surface (112) at the through hole (21); the joint (2) is sleeved on the outer side of the sleeving part (113) through the through hole (21), and is fastened to the top end of the pipe body (11) through the matching of the mounting conical surface and the transition conical surface (112).

8. The pitch adjustable seat pan rod suspension structure of claim 7, wherein, Further comprising: a wear-resistant sleeve (15) matched with the shape of the inner hole (111), and the top end of the wear-resistant sleeve (15) is provided with an annular flange (151), the wear-resistant sleeve (15) is inserted into the inner hole (111), and the annular flange (151) supports the top end of the sleeving part (113).

9. A shock absorbing vehicle comprising a seat cushion, characterised in that, Further comprising the pitch-adjustable seat cushion rod shock-absorbing structure according to any one of claims 1-8, and the seat cushion is connected between the first sheet (8) and the second sheet (9); Further comprising the pitch-adjustable seat cushion rod shock-absorbing structure according to any one of claims 1-8, and the seat cushion is connected between the first sheet (8) and the second sheet (9); When the first cover piece (8) and the second cover piece (9) are unlocked, the pitch attitude of the cushion can be adjusted by adjusting the mounting positions of the first cover piece (8) and the second cover piece (9) relative to the connecting rod support (7).

10. The scooter of claim 9, wherein, The top of the first cover piece (8) is provided with a pair of first seat arch clamping grooves (83) on both sides, and the bottom of the second cover piece (9) is provided with a pair of second seat arch clamping grooves (93) on both sides, which are matched with the first seat arch clamping grooves (83). A pair of elastic seat arches (30) at the bottom of the cushion are clamped between a pair of first seat arch clamping grooves (83) and corresponding second seat arch clamping grooves (93).

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