A large capacity adjustable bicycle carrier

Abstract

A large-capacity adjustable bicycle rack includes: a folding and telescopic mechanism, an auxiliary wheel mechanism, and a shock-absorbing mechanism; the folding and telescopic mechanism includes a rear seat; the rear seat is fixedly installed at the rear of the bicycle; the folding and telescopic mechanism is mounted on the rear side of the bicycle via the rear seat; two auxiliary wheel mechanisms are symmetrically installed on the folding and telescopic mechanism, and are symmetrical about the rear wheel of the bicycle, for assisting in maintaining the balance of the bicycle; a shock-absorbing mechanism is installed on the folding and telescopic mechanism; the shock-absorbing mechanism is used to buffer the impact on the goods; this invention increases the storage space at the rear of the bicycle while also being able to be folded up, reducing space occupation when not carrying a large amount of goods.

Description

Technical Field

[0001] This invention relates to the field of bicycle manufacturing, and more particularly to a large-capacity adjustable bicycle rack. Background Technology

[0002] Traditional bicycles only have a rear cargo rack, fixed to the back of the bike, used to carry items. However, to ensure the bicycle's lightness, the cargo rack itself is a flat structure. To prevent items from falling off, it often needs to be secured with ropes, or a basket needs to be installed on the rear rack to store items. However, installing a basket greatly affects the bicycle's lightness and maneuverability, and some small items can only be placed in a small bag, significantly increasing the burden of travel. Traditional rear cargo racks can no longer meet the requirements for carrying heavier items.

[0003] Chinese Patent Application No. 201310406666.2 discloses a bicycle touring rear rack, including a load-bearing upper rack, a load-bearing bracket, a rear fixed foot, a third fixed foot, and a U-shaped frame. The lower part of the load-bearing upper rack is connected to the load-bearing bracket, and the load-bearing bracket is connected to the end of the rear fork via the rear fixed foot. One end of the third fixed foot is connected to the load-bearing bracket, and the other end is connected to the bicycle rear fork. The U-shaped frame is tilted and has its opening facing upward. The two open ends of the U-shaped frame are respectively installed on the lower end of the load-bearing upper rack and the load-bearing bracket. Although this invention effectively utilizes the unused space at the rear of the bicycle, the space is small and cannot be stored properly. When carrying heavy objects, the bicycle is prone to tilting.

[0004] To address the aforementioned problems, this invention provides a large-capacity adjustable bicycle rack. Summary of the Invention

[0005] To address the problems in the background art, the present invention provides a large-capacity adjustable bicycle rack, the specific technical solution of which is as follows:

[0006] A high-capacity adjustable bicycle rack includes: a folding and telescopic mechanism, an auxiliary wheel mechanism, and a shock-absorbing mechanism; the folding and telescopic mechanism includes a rear seat; the rear seat is fixedly installed at the rear of the bicycle; the folding and telescopic mechanism is mounted on the rear side of the bicycle via the rear seat; two auxiliary wheel mechanisms are symmetrically mounted on the folding and telescopic mechanism, and the two auxiliary wheel mechanisms are symmetrical about the rear wheel of the bicycle, for assisting in maintaining the balance of the bicycle; a shock-absorbing mechanism is installed on the folding and telescopic mechanism; the shock-absorbing mechanism is used to buffer the impact on the goods.

[0007] Furthermore, the folding and telescopic mechanism also includes a first sliding plate, a second sliding plate, a folding frame, and a drive assembly; mounting brackets are provided on both the front and rear ends of the rear seat; the two first sliding plates are symmetrically and horizontally slidably mounted on the left and right ends of the rear seat, and the two second sliding plates are respectively horizontally slidably mounted on the two first sliding plates, and the first sliding plates and the second sliding plates are synchronously driven by the drive assembly mounted on the rear seat;

[0008] Both front and rear sides of the two second sliding plates are fixedly connected to the mounting frame via folding brackets.

[0009] Furthermore, the drive assembly includes a lead screw, a second lead screw, a rotating rod, and a worm gear; the rotating rod is rotatably mounted on the rear seat; a worm is provided at the middle position of the rotating rod, and a rotating handle is provided at one end of the rotating rod; the first lead screw is rotatably mounted on the rear seat corresponding to the rotating rod; a worm gear is provided at the middle position of the first lead screw; the worm gear meshes with the worm.

[0010] The two first sliding plates are horizontally fitted and slidably mounted on the left and right ends of the first lead screw, respectively. The rotation of the first lead screw drives the two first sliding plates to slide left and right.

[0011] Two lead screws are symmetrically and horizontally slidably mounted on both ends of the lead screw, and one end of each lead screw is rotatably mounted on the corresponding first sliding plate. The first sliding plate drives the lead screw to slide horizontally on the lead screw.

[0012] The two second sliding plates are respectively slidably mounted on the two lead screws, and the rotation of the lead screws drives the corresponding second sliding plates to slide horizontally.

[0013] Furthermore, the auxiliary wheel mechanism includes a handwheel, a first mounting frame, a second mounting frame, an auxiliary wheel, and a linkage mechanism. The first mounting frame is fixedly mounted on the first sliding plate. The rear end of the second mounting frame is movably mounted on the first sliding plate, and the second mounting frame is located below the first mounting frame. The auxiliary wheel is rotatably mounted on the front end of the second mounting frame. The auxiliary wheel is rotatably connected to the second mounting frame via a leaf spring, and the spring force of the leaf spring ensures that the auxiliary wheel remains parallel to the second mounting frame when no external force is applied. The upper end of the linkage mechanism is rotatably connected to the first mounting frame, and the lower end is rotatably connected to the second mounting frame. The handwheel is rotatably mounted on the first mounting frame, and one end of the handwheel is fixedly connected to the linkage mechanism. Rotating the handwheel drives the linkage mechanism to rotate, which in turn drives the second mounting frame to rotate, thereby causing the auxiliary wheel to contact the ground.

[0014] Furthermore, the linkage mechanism includes connecting rod one, connecting rod two, connecting rod three, and connecting rod four; connecting rod two is rotatably mounted on the rear end of the mounting frame one; one end of connecting rod one is rotatably mounted on the front end of the mounting frame one, and the other end is rotatably mounted on the rear end of the mounting frame two; one end of connecting rod three is rotatably mounted on the middle position of connecting rod one, and the other end is rotatably connected to the other end of connecting rod two; one end of connecting rod four is rotatably connected to the middle position of the mounting frame two, and the other end is rotatably connected to the other end of connecting rod three.

[0015] Furthermore, the auxiliary wheel mechanism also includes a limiting rod; the limiting rod is fixedly installed at the front end of the first sliding plate, and the limiting rod corresponds to the auxiliary wheel; when the handwheel is rotated to drive the auxiliary wheel to retract, after the auxiliary wheel rises to a certain height, it will abut against the lower end of the limiting rod, thereby driving the auxiliary wheel to rotate downward on the second mounting frame, reducing the length occupied by the auxiliary wheel in the horizontal direction.

[0016] Furthermore, the auxiliary wheel mechanism also includes a telescopic rod; one end of the telescopic rod is fixedly connected to the left connecting rod, and the other end of the telescopic rod is fixedly connected to the right connecting rod, so that the auxiliary wheel mechanisms on the left and right sides can rotate synchronously.

[0017] Furthermore, the shock absorption mechanism is provided with a support rod, a sliding frame, and a fixing rod; the folding and telescopic mechanism also includes an outer frame one and an outer frame two; the two outer frames two are fixedly installed on the left and right ends of the rear seat, and the two outer frames two together with the mounting brackets at the front and rear ends of the rear seat form a square for holding goods; the upper and lower ends of the outer frame one are respectively provided with mounting holes one for installing the sliding frame and the fixing rod; one end of the mounting hole one is fixedly connected to the fixing rod; the sliding frame is horizontally slidably installed in the mounting hole one, and the sliding frame is elastically connected to the fixing rod; the support rod is fixedly installed in the two upper and lower corresponding sliding frames; the outer frame two is exactly the same as the outer frame one, and the outer frame two is also equipped with a shock absorption mechanism.

[0018] Furthermore, the rear seat, the first sliding plate, and the second sliding plate are all provided with multiple mounting holes 2 for mounting the sliding frame and the fixing rod; the fixing rod is fixedly installed at one end of the mounting hole 2; the sliding frame is horizontally slidably installed in the mounting hole 2, and the sliding frame is elastically connected to the fixing rod; a telescopic rod 2 is fixedly installed on the sliding frame in the mounting hole 2; the telescopic rod 2 extends from the middle to both sides and is divided into three sections; the two ends of the middle section of the telescopic rod 2 are fixedly installed on the corresponding sliding frame of the rear seat; the two second sections of the telescopic rod 2 are respectively fixedly connected to the sliding frames on the two first sliding plates; the two third sections of the telescopic rod 2 are respectively fixedly connected to the sliding frames on the two second sliding plates.

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] (1) The present invention increases the storage space at the rear of the bicycle by means of a folding telescopic mechanism, and can be stored away. When it is not necessary to carry a large amount of goods, the folding telescopic mechanism can be folded away to reduce the space occupied.

[0021] (2) The present invention can increase the stability of the bicycle through the auxiliary wheel mechanism, and can also provide certain support and balance for the folding telescopic mechanism, thereby increasing the load-bearing capacity of the folding telescopic mechanism;

[0022] (3) The present invention can reduce the impact on the cargo at the rear of the bicycle through the shock absorption mechanism, thereby protecting the fragile cargo to a certain extent. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall assembly structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the assembly structure of part of the folding and telescopic mechanism of the present invention;

[0025] Figure 3 This is a schematic diagram of the assembly structure of the folding telescopic mechanism and the shock absorption mechanism of the present invention;

[0026] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A;

[0027] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point B;

[0028] Figure 6 This is a schematic diagram of the structure of the rear seat of the present invention;

[0029] Figure 7 This is a schematic diagram of the assembly structure of the first sliding plate and the limiting rod of the present invention;

[0030] Figure 8-9 This is a schematic diagram of the assembly structure of the first sliding plate and the auxiliary wheel mechanism of the present invention;

[0031] Figure 10-12 This is a schematic diagram of the assembly structure of the auxiliary wheel mechanism of the present invention;

[0032] Figure 13 This is a schematic diagram of the assembly structure of the folding telescopic mechanism and the shock absorption mechanism from another angle of the present invention;

[0033] Figure 14 This is a schematic diagram of the telescopic rod of the present invention;

[0034] Figure 15-16 This is a schematic diagram of the assembly structure of the outer frame and the shock absorption mechanism of the present invention;

[0035] Figure 17 For the present invention Figure 16 Enlarged structural diagram at point C;

[0036] Figure 18 This is a schematic diagram of the assembly structure of part of the shock absorption mechanism of the present invention;

[0037] Figure 19 For the present invention Figure 18 A magnified structural diagram at point D.

[0038] In the diagram: 1-Folding telescopic mechanism (101-Rear seat, 102-First sliding plate, 103-Second sliding plate, 104-Folding frame, 105-Outer frame one, 106-Outer frame two; 107-Lead screw one, 108-Lead screw two, 109-Rotating rod, 110-Worm gear); 2-Auxiliary wheel mechanism (201-Handwheel, 202-Gear one, 203-Mounting frame one, 204-Connecting rod one, 205-Connecting rod two, 206-Connecting rod three, 207-Connecting rod four, 208-Mounting frame two, 209-Auxiliary wheel, 210-Limiting rod, 211-Telescopic rod one); 3-Shock absorption mechanism (301-Support rod, 302-Sliding frame, 303-Fixing rod, 304-Telescopic rod two). Detailed Implementation

[0039] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0040] Example:

[0041] A high-capacity adjustable bicycle rack, such as Figure 1-2 As shown, it includes: a folding and telescopic mechanism 1, an auxiliary wheel mechanism 2, and a shock-absorbing mechanism 3; the folding and telescopic mechanism 1 includes a rear seat 101; the rear seat 101 is fixedly installed at the rear of the bicycle; the folding and telescopic mechanism 1 is installed on the rear side of the bicycle via the rear seat 101; two auxiliary wheel mechanisms 2 are symmetrically installed on the folding and telescopic mechanism 1, and the two auxiliary wheel mechanisms 2 are symmetrical about the rear wheel of the bicycle, which is used to help maintain the balance of the bicycle; the folding and telescopic mechanism 1 is equipped with a shock-absorbing mechanism 3; the shock-absorbing mechanism 3 is used to buffer the impact on the cargo.

[0042] Specifically, such as Figure 2-7As shown, the folding telescopic mechanism 1 also includes a first sliding plate 102, a second sliding plate 103, a folding frame 104, and a drive assembly; the drive assembly includes a lead screw 107, a lead screw 2 108, a rotating rod 109, and a worm gear 110;

[0043] Mounting brackets are provided on both the front and rear ends of the rear seat 101; square sliding grooves are provided on both the left and right ends of the front and rear sides of the bottom of the rear seat 101; two first sliding plates 102 are symmetrically and slidably installed in the square sliding grooves, and the corresponding parts of the first sliding plates 102 and the square sliding grooves are also square; the square sliding grooves enable the first sliding plates 102 to slide only left and right during the sliding process and not rotate, thus preventing tilting.

[0044] Similarly, square grooves are provided at both the front and rear ends of the first sliding plate 102, and the two second sliding plates 103 are respectively slidably installed in the square grooves of the two first sliding plates 102.

[0045] Both front and rear sides of the two second sliding plates 103 are fixedly connected to the mounting frame via folding frames 104. The folding frames 104 can extend and retract according to the sliding of the second sliding plates 103. The gap between the mounting frame and the second sliding plates 103 is blocked by the telescopic frames 104 to prevent goods from falling.

[0046] By sliding the first sliding plate 102 and the second sliding plate 103, the cargo holding space is increased while also having a storage effect. When it is not necessary to place a large amount of cargo, the first sliding plate 102 and the second sliding plate 103 can be retracted to reduce the space occupied.

[0047] As a specific implementation of this embodiment, locking devices are provided on both the rear seat 101 and the first sliding plate 102. The locking devices include locking screws. Locking screws are installed on both the rear seat 101 and the first sliding plate 102. Locking screws are installed on the square slide groove of the rear seat 101, and the locking screws correspond to the first sliding plate 102. When the first sliding plate 102 slides to the designated position, the locking screws are tightened to fix the position of the first sliding plate 102, thereby fixing the goods more firmly. The goods will not be loosely fixed due to the movement of the position of the first sliding plate 102, thus avoiding the goods from being bumped to a certain extent.

[0048] Similarly, locking screws are also fixed on the square slide groove 2 of the first sliding plate 102, corresponding to the second sliding plate 103, for locking the second sliding plate 103; the locking screws on the square slide groove 1 are installed on the bottom of the square slide groove 1, and the locking screws on the square slide groove 2 are installed on the side of the square slide groove 1, and the square slide groove 1 is provided with a clearance opening, which allows the locking screws on the square slide groove 2 to pass through; by providing a clearance opening on the square slide groove 1, the first sliding plate 102 can slide a greater distance in the left and right direction on the rear seat 101, ensuring a larger storage space while ensuring that the first sliding plate 102 can slide a greater distance inward to the rear seat 101, maximizing the proximity of the first sliding plate 102 to the rear seat 101, and folding more compactly when folded, saving space.

[0049] Specifically, such as Figure 3-5 As shown, the rotating rod 109 is rotatably mounted on the rear seat 101; a worm gear is provided in the middle of the rotating rod 109, and a rotating handle is provided at one end of the rotating rod 109; the lead screw 107 is rotatably mounted on the rear seat 101 corresponding to the rotating rod 109; a worm wheel 110 is provided in the middle of the lead screw 107; the worm wheel 110 meshes with the worm gear; the operator rotates the handle, thereby driving the worm wheel 110 to rotate, which in turn drives the lead screw 107 to rotate.

[0050] Two first sliding plates 102 are horizontally fitted and slidably mounted on the left and right ends of the lead screw 107, respectively. The rotation of the lead screw 107 drives the two first sliding plates 102 to slide left and right.

[0051] Two lead screws 108 are symmetrically and horizontally slidably mounted on both ends of a lead screw 107, and one end of each lead screw 108 is rotatably mounted on a corresponding first sliding plate 102. The first sliding plate 102 drives the lead screw 108 to slide horizontally on the lead screw 107. As a specific embodiment, the lead screw 107 is provided with a horizontal groove, and the lead screw 108 is provided with a protrusion corresponding to the horizontal groove. The lead screw 107 is located inside the lead screw 108, and the protrusion on the lead screw 108 abuts against the horizontal groove on the lead screw 107, so that while the lead screw 107 can drive the lead screw 108 to rotate, the lead screw 108 can also slide horizontally along the lead screw 107. The horizontal groove on the lead screw 107 does not affect the sliding of the first sliding plate 102 on the lead screw 107.

[0052] Two second sliding plates 103 are respectively slidably mounted on two lead screws 108, and the rotation of the lead screws 108 drives the corresponding second sliding plates 103 to slide horizontally.

[0053] The operator turns the handle, causing lead screw 107 to rotate. The rotation of lead screw 107 then causes the two first sliding plates 102 to slide horizontally towards each other. Simultaneously, the sliding of the first sliding plates 102 causes the corresponding lead screw 108 to slide horizontally, which in turn causes the second sliding plate 103 to slide horizontally. At this time, the distance between the second sliding plate 103 and the first sliding plate 102 remains unchanged. Meanwhile, because the rotation of lead screw 107 causes lead screw 108 to rotate, the rotation of lead screw 108 further causes the second sliding plate 103 to slide horizontally. This increases the distance between the second sliding plate 103 and the first sliding plate 102, thereby increasing the capacity of the shelving unit.

[0054] Specifically, such as Figure 7-12 As shown, the auxiliary wheel mechanism 2 includes a handwheel 201, a mounting frame 1 203, a mounting frame 208, an auxiliary wheel 209, and a linkage mechanism; the linkage mechanism includes a connecting rod 1 204, a connecting rod 205, a connecting rod 3 206, and a connecting rod 4 207.

[0055] Mounting frame 1 203 is fixedly mounted on the first sliding plate 102; the first sliding plate 102 has only a limiting support rod on its rear side, and the limiting support rod has a vertical limiting groove; mounting frame 2 208 has a limiting post on its rear end, and the limiting post is movably mounted in the limiting groove; mounting frame 2 208 is movably mounted on the first sliding plate 102 through the limiting post, and the limiting support rod limits the mounting frame 2 208 so that the mounting frame 2 208 cannot move left or right;

[0056] The rear end of the second mounting frame 208 is movably mounted on the first sliding plate 102, and the second mounting frame 208 is located below the first mounting frame 203; an auxiliary wheel 209 is rotatably mounted on the front end of the second mounting frame 208; the auxiliary wheel 209 is rotatably connected to the second mounting frame 208 through a leaf spring, so that the auxiliary wheel 209 is always parallel to the second mounting frame 208 when it is not subjected to external force.

[0057] The upper end of the linkage mechanism is rotatably connected to the mounting frame 203, and the lower end of the linkage mechanism is rotatably connected to the mounting frame 208. The handwheel 201 is rotatably mounted on the first sliding plate 102, and a gear 2 is fixedly mounted on the handwheel 201. A gear 202 is rotatably mounted on the mounting frame 203. Gear 202 and gear 2 mesh with each other. Gear 202 is fixedly connected to the upper end of the linkage mechanism. The operator rotates the handwheel 201 to drive the linkage mechanism to rotate, thereby driving the mounting frame 208 to rotate and bringing the auxiliary wheel 209 into contact with the ground.

[0058] Specifically, such as Figure 10-12As shown, connecting rod 205 is rotatably mounted on the rear end of mounting frame 203; one end of connecting rod 204 is rotatably mounted on the front end of mounting frame 203, and this end of connecting rod 204 passes through mounting frame 203 and is fixedly connected to gear 202; the other end of connecting rod 204 is rotatably mounted on the rear end of mounting frame 208; one end of connecting rod 206 is rotatably mounted on the middle position of connecting rod 204, and the other end of connecting rod 206 is rotatably connected to the other end of connecting rod 205; one end of connecting rod 207 is rotatably connected to the middle position of mounting frame 208, and the other end of connecting rod 207 is rotatably connected to the other end of connecting rod 206.

[0059] The operator turns handwheel 201, which in turn drives gear 202 to rotate; gear 202 in turn drives connecting rod 204 to rotate; the rotation of connecting rod 204 in turn moves the rear end of mounting frame 208 diagonally forward and diagonally downward, and simultaneously moves connecting rod 206 diagonally downward; since the other end of connecting rod 206 is simultaneously connected to connecting rod 205 and connecting rod 207, the movement of connecting rod 206 is constrained by connecting rod 205, which causes the other end of connecting rod 206 to move diagonally backward and diagonally downward; connecting rod 206 pushes connecting rod 207 diagonally downward. The connecting rod 207 pushes the middle position of the mounting frame 208 to move diagonally backward and diagonally downward, while the connecting rod 204 pushes the upper end of the mounting frame 208 to move diagonally forward and diagonally downward. This causes the mounting frame 208 to flip as it moves downward. When the mounting frame 208 is in a vertical position, the auxiliary wheel 209 at the lower end of the mounting frame 208 is in contact with the ground. The contact between the auxiliary wheel 209 and the ground allows the auxiliary wheel mechanism 2 to provide a certain degree of support for the folding and telescopic mechanism 1, thereby enabling the loading of more goods, ensuring the stability of the shelf, and preventing tilting.

[0060] As a specific implementation of this embodiment, the auxiliary wheel mechanism 2 also includes a limiting rod 210; the limiting rod 210 is fixedly installed at the front end of the first sliding plate 102, and the limiting rod 210 corresponds to the auxiliary wheel 209; when the handwheel 201 is rotated to drive the auxiliary wheel 209 to retract, the auxiliary wheel 209 will abut against the lower end of the limiting rod 210 after it rises to a certain height; the handwheel 201 continues to rotate, thereby driving the auxiliary wheel 209 to rotate downward on the mounting frame 208, reducing the length occupied by the auxiliary wheel 209 in the horizontal direction.

[0061] The auxiliary wheel mechanism 2 also includes a telescopic rod 211; one end of the telescopic rod 211 is fixedly connected to the left connecting rod 204, and the other end of the telescopic rod 211 is fixedly connected to the right connecting rod 204, so that the auxiliary wheel mechanisms 2 on the left and right sides can rotate synchronously; the operator only needs to turn the handwheel 201 on one side to lower the auxiliary wheels 209 on both sides at the same time, and ensure that the height of the two auxiliary wheels 209 is consistent.

[0062] Specifically, such as Figure 13-19 As shown, the shock absorption mechanism 3 is equipped with a support rod 301, a sliding frame 302, and a fixing rod 303; the folding and telescopic mechanism 1 also includes an outer frame 105 and an outer frame 2 106; the two outer frames 2 106 are fixedly installed on the left and right ends of the rear seat 101, and the two outer frames 2 106 together with the mounting brackets at the front and rear ends of the rear seat 101 form a square for holding goods; the upper and lower ends of the outer frame 105 are respectively provided with mounting holes 1 for installing the sliding frame 302 and the fixing rod 303; one end of the mounting hole 1 is fixedly connected to the fixing rod 303; the sliding frame 302 is horizontally slidably installed in the mounting hole 1, and the sliding frame 302 is elastically connected to the fixing rod 303; the support rod 301 is fixedly installed in the two upper and lower corresponding sliding frames 302; the outer frame 2 106 is exactly the same as the outer frame 105, and the shock absorption mechanism 3 is also installed on the outer frame 2 106;

[0063] The rear seat 101, the second sliding plate 103, the outer frame 105, the outer frame 2 106 and the folding frame 104 form multiple squares, in which goods can be placed. When the goods move back and forth or collide, they will be squeezed onto the support rod 301. The support rod 301 can slide elastically left and right, thereby reducing the impact on the goods and protecting fragile goods to a certain extent.

[0064] Specifically, such as Figure 13-14 As shown, the rear seat 101, the first sliding plate 102, and the second sliding plate 103 are all provided with multiple mounting holes for mounting the sliding frame 302 and the fixing rod 303. The fixing rod 303 is fixedly installed at one end of the mounting hole. The sliding frame 302 is horizontally slidably installed in the mounting hole, and the sliding frame 302 is elastically connected to the fixing rod 303. A telescopic rod 304 is fixedly installed on the sliding frame 302 in the mounting hole. The telescopic rod 304 is used to support the goods placed in the folding telescopic mechanism 1, and cooperates with the sliding frame 302 and the fixing rod 303 to provide shock absorption for the goods.

[0065] The telescopic rod 304 extends from the middle to both sides and is divided into three sections; the two ends of the middle section of the telescopic rod 304 are fixedly installed on the corresponding sliding frame 302 of the rear seat 101; the two second sections of the telescopic rod 304 are respectively fixedly connected to the sliding frame 302 on the two first sliding plates 102; the two third sections of the telescopic rod 304 are respectively fixedly connected to the sliding frame 302 on the two second sliding plates 103.

[0066] When the first sliding plate 102 slides left and right, it causes the second section of the telescopic rod 304 to slide left and right. When the second sliding plate 103 slides left and right, it causes the third section of the telescopic rod 304 to slide left and right. The telescopic rod 304 will not affect the storage effect of the folding telescopic mechanism 1.

[0067] By installing a shock-absorbing mechanism 3 on the folding telescopic mechanism 1, the impact on the goods in the vertical and lateral directions can be reduced, thus protecting the fragile goods.

[0068] The above are merely preferred embodiments of this example, but the scope of protection of this example is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this example, based on the technical solution and inventive concept of this example, should be covered within the scope of protection of this example.

Claims

1. A large-capacity adjustable bicycle rack, characterized in that, include: The bicycle includes a folding telescopic mechanism (1), an auxiliary wheel mechanism (2), and a shock-absorbing mechanism (3). The folding telescopic mechanism (1) includes a rear seat (101). The rear seat (101) is fixedly installed at the rear of the bicycle. The folding telescopic mechanism (1) is installed on the rear side of the bicycle via the rear seat (101). Two auxiliary wheel mechanisms (2) are symmetrically installed on the folding telescopic mechanism (1) and are symmetrical about the rear wheel of the bicycle, which helps to maintain the balance of the bicycle. A shock-absorbing mechanism (3) is installed on the folding telescopic mechanism (1). The shock-absorbing mechanism (3) is used to buffer the impact on the cargo. The folding telescopic mechanism (1) further includes a first sliding plate (102), a second sliding plate (103), a folding frame (104), and a drive assembly; the rear seat (101) is provided with mounting brackets at both the front and rear ends; the two first sliding plates (102) are symmetrically and horizontally slidably mounted on the left and right ends of the rear seat (101), and the two second sliding plates (103) are respectively horizontally slidably mounted on the two first sliding plates (102), and the first sliding plates (102) and the second sliding plates (103) are synchronously driven by the drive assembly mounted on the rear seat (101); The front and rear sides of the two second sliding plates (103) are fixedly connected to the mounting frame via folding brackets (104).

2. The large-capacity adjustable bicycle rack according to claim 1, characterized in that: The drive assembly includes a lead screw (107), a lead screw (108), a rotating rod (109), and a worm gear (110); the rotating rod (109) is rotatably mounted on the rear seat (101); a worm is provided in the middle of the rotating rod (109), and a rotating handle is provided at one end of the rotating rod (109); the lead screw (107) is rotatably mounted on the rear seat (101) corresponding to the rotating rod (109); a worm gear (110) is provided in the middle of the lead screw (107); the worm gear (110) meshes with the worm. The two first sliding plates (102) are horizontally fitted and slidably installed on the left and right ends of the first lead screw (107), and the rotation of the first lead screw (107) drives the two first sliding plates (102) to slide left and right; Two lead screws (108) are symmetrically and horizontally slidably mounted on both ends of the lead screw (107), and one end of each lead screw (108) is rotatably mounted on the corresponding first sliding plate (102). The lead screw (108) is driven by the first sliding plate (102) to slide horizontally on the lead screw (107). The two second sliding plates (103) are respectively slidably mounted on the two lead screws (108), and the corresponding second sliding plates (103) are driven to slide horizontally by the rotation of the lead screws (108).

3. The large-capacity adjustable bicycle rack according to claim 1, characterized in that: The auxiliary wheel mechanism (2) includes a handwheel (201), a first mounting frame (203), a second mounting frame (208), an auxiliary wheel (209), and a linkage mechanism; the first mounting frame (203) is fixedly mounted on the first sliding plate (102); the rear end of the second mounting frame (208) is movably mounted on the first sliding plate (102), and the second mounting frame (208) is located below the first mounting frame (203); the auxiliary wheel (209) is rotatably mounted on the front end of the second mounting frame (208); the auxiliary wheel (209) is connected to the second mounting frame (209) via a leaf spring. 08) Rotary connection, the spring force of the leaf spring makes the auxiliary wheel (209) always parallel to the second mounting frame (208) when no external force is applied; the upper end of the linkage mechanism is rotatably connected to the first mounting frame (203), and the lower end is rotatably connected to the second mounting frame (208); the handwheel (201) is rotatably mounted on the first mounting frame (203), and the handwheel (201) is fixedly connected to one end of the linkage mechanism; by rotating the handwheel (201), the linkage mechanism is driven to rotate, and then the second mounting frame (208) is driven to rotate through the linkage mechanism, thereby driving the auxiliary wheel (209) to contact the ground.

4. A large-capacity adjustable bicycle rack according to claim 3, characterized in that: The linkage mechanism includes connecting rod one (204), connecting rod two (205), connecting rod three (206), and connecting rod four (207); connecting rod two (205) is rotatably mounted on the rear end of mounting frame one (203); one end of connecting rod one (204) is rotatably mounted on the front end of mounting frame one (203), and the other end is rotatably mounted on the rear end of mounting frame two (208); one end of connecting rod three (206) is rotatably mounted on the middle position of connecting rod one (204), and the other end is rotatably connected to the other end of connecting rod two (205); one end of connecting rod four (207) is rotatably connected to the middle position of mounting frame two (208), and the other end is rotatably connected to the other end of connecting rod three (206).

5. A large-capacity adjustable bicycle rack according to claim 3, characterized in that: The auxiliary wheel mechanism (2) also includes a limiting rod (210); the limiting rod (210) is fixedly installed at the front end of the first sliding plate (102), and the limiting rod (210) corresponds to the auxiliary wheel (209); when the handwheel (201) is rotated to drive the auxiliary wheel (209) to retract, after the auxiliary wheel (209) rises to a certain height, it will abut against the lower end of the limiting rod (210), thereby driving the auxiliary wheel (209) to rotate downward on the second mounting frame (208), reducing the length occupied by the auxiliary wheel (209) in the horizontal direction.

6. A large-capacity adjustable bicycle rack according to claim 4, characterized in that: The auxiliary wheel mechanism (2) also includes a telescopic rod (211); one end of the telescopic rod (211) is fixedly connected to the left connecting rod (204), and the other end of the telescopic rod (211) is fixedly connected to the right connecting rod (204), so that the auxiliary wheel mechanisms (2) on the left and right sides can rotate synchronously.

7. A large-capacity adjustable bicycle rack according to claim 1, characterized in that: The shock absorption mechanism (3) is provided with a support rod (301), a sliding frame (302), and a fixing rod (303); the folding telescopic mechanism (1) also includes an outer frame one (105) and an outer frame two (106); the two outer frames two (106) are fixedly installed on the left and right ends of the rear seat (101), and the two outer frames two (106) together with the mounting brackets at the front and rear ends of the rear seat (101) form a square for holding goods; the upper and lower ends of the outer frame one (105) are respectively provided with a sliding frame for mounting the sliding frame. The frame (302) and the mounting hole of the fixing rod (303) are respectively; one end of the mounting hole is fixedly connected to the fixing rod (303); the sliding frame (302) is horizontally slidably installed in the mounting hole, and the sliding frame (302) is elastically connected to the fixing rod (303); the support rod (301) is fixedly installed in the two corresponding sliding frames (302) above and below; the outer frame two (106) is exactly the same as the outer frame one (105), and the outer frame two (106) is also equipped with a shock absorption mechanism (3).

8. A large-capacity adjustable bicycle rack according to claim 7, characterized in that: The rear seat (101), the first sliding plate (102), and the second sliding plate (103) are all provided with multiple mounting holes for mounting the sliding frame (302) and the fixing rod (303) at their bottoms; the fixing rod (303) is fixedly installed at one end of the mounting hole; the sliding frame (302) is horizontally slidably installed in the mounting hole, and the sliding frame (302) is elastically connected to the fixing rod (303); a fixed mounting device is installed on the sliding frame (302) in the mounting hole. Telescopic rod two (304); the telescopic rod two (304) extends from the middle to both sides and is divided into three sections; the two ends of the middle section of the telescopic rod two (304) are fixedly installed on the sliding frame (302) corresponding to the rear seat (101); the two second sections of the telescopic rod two (304) are respectively fixedly connected to the sliding frame (302) on the two first sliding plates (102); the two third sections of the telescopic rod two (304) are respectively fixedly connected to the sliding frame (302) on the two second sliding plates (103).

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