A safe treadmill for pets

Abstract

The present invention relates to the technical field of pet treadmills, and discloses a safe pet treadmill, which includes a frame unit, a transmission unit, an adjustment unit and a tensioning unit; wherein, the frame unit includes a fixed frame and a movable frame, the fixed frame and the movable frame can move relative to each other, two slots are opened on the fixed frame, two connecting columns are fixed on the movable frame, and the two connecting columns are respectively inserted into the two slots, a support frame is fixed inside the fixed frame, and a support plate is fixed inside the movable frame, and the support plate is inserted into the support frame. By setting a slidable movable frame, the user rotates the first lead screw to make the movable frame close to the fixed frame until they fit, which can make the overall length of the pet treadmill shorter, facilitating storage and transfer. In addition, in the present invention, the fixed frame and the movable frame adopt lightweight materials to reduce the overall weight, facilitating the transfer of the treadmill.

Description

Technical Field

[0001] The present invention relates to the technical field of pet treadmills, and in particular to a safe pet treadmill. Background Art

[0002] A pet treadmill is a kind of exercise equipment specially designed for pets. It can help pets exercise indoors, increase their exercise volume, and improve their cardiopulmonary function and physical fitness.

[0003] After retrieval, a Chinese patent with the publication number CN219593363U discloses an intelligent pet treadmill, which relates to the field of pet treadmills and includes: a pet treadmill, the pet treadmill includes a running belt that can drive the pet to move; a food feeder, the food feeder includes a storage granary arranged on the pet treadmill, and a grain discharging area is arranged at one end of the storage granary close to the running belt. The grain discharging area filled with grain is used to lure the pet onto the running belt. The above solution can allow the pet to exercise spontaneously while eating. However, when the above solution is used, there are still the following deficiencies:

[0004] The size of the pet treadmill proposed by the above solution is fixed, occupying a large space, which is not conducive to storage and transfer. This characteristic will bring many drawbacks in actual use. For example, it will seriously limit the flexibility of its use scenarios. For families with limited living space, a large treadmill not only occupies valuable indoor space, affects the home layout and daily activities, but also causes great trouble when moving or redecorating the room, increasing the handling difficulty and cost.

[0005] Therefore, it is necessary to design a safe pet treadmill to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to propose a safe pet treadmill.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A safe pet treadmill includes a frame unit, a transmission unit, an adjustment unit and a tensioning unit;

[0009] Among them, the frame unit includes a fixed frame and a movable frame. The fixed frame and the movable frame can move relative to each other. Two slots are opened on the fixed frame. Two connecting columns are fixed on the movable frame. The two connecting columns are respectively inserted into the two slots. A support frame is fixed inside the fixed frame, and a support plate is fixed inside the movable frame. The support plate is inserted into the support frame;

[0010] Among them, a transmission belt is included in the transmission unit, and the transmission belt is arranged on the fixed frame and the movable frame;

[0011] Among them, the adjustment unit is composed of a first adjustment component and a second adjustment component. The first adjustment component is arranged inside the fixed frame to adjust the transmission belt, and the second adjustment component is arranged on the sides of the fixed frame and the movable frame to adjust the position of the movable frame;

[0012] Among them, the tensioning unit is composed of a gas supply component and a pushing component. The gas supply component is arranged on the movable frame, and the pushing component is arranged inside the fixed frame.

[0013] As a preferred technical solution of the present invention, the transmission unit further includes a first roller shaft, a second roller shaft, a third roller shaft, a fourth roller shaft, a frame body and an adjustment roller shaft. The first roller shaft and the second roller shaft are rotatably installed on the fixed frame, the third roller shaft and the fourth roller shaft are rotatably installed on the movable frame, the adjustment roller shaft is rotatably installed on the frame body, the first roller shaft, the second roller shaft, the third roller shaft and the fourth roller shaft are distributed at four corners, the transmission belt bypasses the first roller shaft, the third roller shaft, the fourth roller shaft, the second roller shaft and the adjustment roller shaft, the first roller shaft serves as a driving shaft for driving the transmission belt to rotate, and a vertical plate is fixed on the frame body.

[0014] As a preferred technical solution of the present invention, the first adjustment component includes a first screw rod, an adjustment seat, a connecting plate, a connecting frame, a limiting port and a limiting block. The first screw rod is rotatably installed inside the fixed frame, the adjustment seat is threadedly sleeved on the first screw rod, one end of the connecting plate is connected to the adjustment seat, the other end of the connecting plate is connected to the connecting frame, the end of the connecting frame away from the connecting plate is a U-shaped opening which is stuck on the frame body, the limiting port is opened at the end of the connecting frame away from the connecting plate, and the limiting block is fixed on the side of the frame body and slides in the limiting port.

[0015] As a preferred technical solution of the present invention, the second adjustment component includes a rotating rod, a second screw rod, a moving seat, a first gear and a second gear. The rotating rod is rotatably installed on the side of the fixed frame, the second screw rod is fixed at the end of the rotating rod, and the second screw rod and the rotating rod are coaxially arranged. The moving seat is threadedly sleeved on the second screw rod and is fixed on the side of the movable frame. The first gear is fixedly sleeved on one end of the first screw rod, the second gear is fixedly sleeved on the end of the rotating rod away from the second screw rod, and the first gear and the second gear are meshed with each other.

[0016] As a preferred technical solution of the present invention, the air supply assembly includes a shaft rod, an eccentric wheel, a first sealing cylinder, a first sliding plug, two mounting pipes and two one-way valves. One end of the shaft rod is connected to the fourth roller shaft, and the other end of the shaft rod passes through the movable frame and is rotatably connected to the movable frame. The eccentric wheel is fixedly sleeved on the shaft rod and is eccentrically arranged with respect to the shaft rod. The first sealing cylinder is fixed on the side of the movable frame. The first sliding plug is hermetically and slidably connected inside the first sealing cylinder. The first sliding plug and the first sealing cylinder are connected by a first spring. A first ejector rod is fixed on the first sliding plug. One end of the first ejector rod away from the first sliding plug extends to the outside of the first sealing cylinder and is arranged opposite to the eccentric wheel. One ends of the two mounting pipes are both communicated with the first sealing cylinder. The two one-way valves are respectively installed on the two mounting pipes. One of the mounting pipes is communicated with the outside for air extraction, and the other mounting pipe is for air exhaust.

[0017] As a preferred technical solution of the present invention, the pushing assembly includes a mounting frame, a second sealing cylinder, a second sliding plug and a pushing block. The mounting frame is fixed on the side of the support frame. The second sealing cylinder is fixed on the side of the mounting frame. The second sliding plug is hermetically and slidably connected inside the second sealing cylinder. The second sliding plug and the second sealing cylinder are connected by a second spring. A second ejector rod is fixed on the second sliding plug. One end of the second ejector rod away from the second sliding plug extends to the outside of the second sealing cylinder and is fixedly connected to the pushing block. The pushing block is arranged opposite to the vertical plate. An exhaust hole is formed in the second sealing cylinder. The second sealing cylinder is communicated with the mounting pipe for air exhaust.

[0018] As a preferred technical solution of the present invention, adsorption seats are fixed on both the fixed frame and the movable frame. The interiors of the two adsorption seats are both hollow structures. A plurality of suction cups are arranged on the bottom surface of each adsorption seat. Each suction cup is communicated with the interior of the corresponding adsorption seat. An air extraction assembly is arranged on the mounting frame, and a movable member is arranged on the pushing block;

[0019] The air extraction assembly includes a third sealing cylinder, a third sliding plug, a third ejector rod and a convex block. The third sealing cylinder is fixed on the side of the mounting frame. The third sliding plug is hermetically and slidably connected inside the third sealing cylinder. One end of the third ejector rod is connected to the third sliding plug, and the other end of the third ejector rod extends to the outside of the third sealing cylinder. The convex block is fixed at one end of the third ejector rod located outside the third sealing cylinder. Two communicating pipes are connected to the third sealing cylinder. One ends of the two communicating pipes away from the third sealing cylinder are respectively communicated with the two adsorption seats.

[0020] As a preferred technical solution of the present invention, the movable member includes a groove and a movable block. The groove is opened on the bottom surface of the push block. The movable block slides in the groove. The bottom end of the movable block extends to the outside of the groove. The movable block and the groove wall are connected in three phases by a spring. One end of the movable block located outside the groove is provided with two inclined surfaces with opposite inclined directions, and both of the inclined surfaces face the convex block.

[0021] As a preferred technical solution of the present invention, there is a gap between the adjusting roller shaft and the inner surface of the frame body, and the transmission belt passes through this gap.

[0022] As a preferred technical solution of the present invention, the side surface of the adjusting seat is mutually attached to the inner surface of the fixed frame.

[0023] The present invention has the following beneficial effects:

[0024] 1. By setting a slidable movable frame, the user can make the movable frame approach the fixed frame until they are attached by rotating the first lead screw, which can shorten the overall length of the pet treadmill, making it convenient for storage and transfer. In addition, in the present invention, the fixed frame and the movable frame adopt lightweight materials to reduce the overall weight, making it convenient to transfer the treadmill;

[0025] 2. By setting a tensioning unit, when gas enters the second sealing cylinder to push the second sliding plug to move, and then drives the second ejector rod, the push block, the vertical plate, the frame body and the adjusting roller shaft to move, so that the adjusting roller shaft presses against the transmission belt to provide a tensioning effect. Compared with the traditional spring tensioning, the pneumatic tensioning method adopted in the present invention can effectively avoid the loss of spring elasticity, always ensure a stable tensioning force on the transmission belt, thereby ensuring the stable transmission and smooth rotation of the transmission belt, and improving the reliability and stability of the transmission system;

[0026] 3. By setting two adsorption seats, along with the air supply action during the transmission of the transmission belt to push the second sliding plug to move, before the push block contacts the vertical plate, the movable block pushes the third ejector rod through the convex block to make the third sliding plug move, and extracts the air in the adsorption seat through the connecting pipe, so that the suction cup is firmly adsorbed on the ground under the negative pressure, ensuring the stability of the fixed frame and the movable frame on the ground, effectively avoiding the shaking situation, and taking into account the convenience of transferring the treadmill and the stability during operation;

[0027] 4. The adjustable frame design can flexibly adjust the distance between the fixed frame and the movable frame, which can not only provide sufficient activity space for large pets, but also adapt to the use needs of small pets. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The structure diagram of a safe pet treadmill proposed by the present invention Figure 1 ;

[0029] Figure 2Structural schematic of a safe pet treadmill proposed by the present invention Figure 2 ;

[0030] Figure 3 Is Figure 2 Enlarged view of the structure at point A;

[0031] Figure 4 Is the structural schematic of the frame unit;

[0032] Figure 5 Is the structural schematic when the fixed frame contacts the movable frame;

[0033] Figure 6 Is the structural schematic of the adjustment of the drive belt;

[0034] Figure 7 Is the structural schematic of the drive unit and the adjustment unit;

[0035] Figure 8 Is the sectional view structural schematic of the drive unit and the adjustment unit;

[0036] Figure 9 Is Figure 8 Enlarged view of the structure at point B;

[0037] Figure 10 Is the structural schematic of the air supply component;

[0038] Figure 11 Is the structural schematic of the adjustment unit;

[0039] Figure 12 Is Figure 11 Enlarged view of the structure at point C;

[0040] Figure 13 Is the structural schematic of the pushing component and the air extraction component;

[0041] Figure 14 Is the structural schematic of the adsorption seat and several suction cups thereon;

[0042] Figure 15 Is Figure 2 Enlarged view of the structure at point D.

[0043] In the figure: 101, fixed frame; 102, movable frame; 103, slotted groove; 104, connecting column; 105, support frame; 106, support plate; 21, first roller shaft; 22, second roller shaft; 23, third roller shaft; 24, fourth roller shaft; 25, frame body; 2501, vertical plate; 26, adjusting roller shaft; 27, drive belt; 31, first lead screw; 32, adjusting seat; 33, connecting plate; 34, connecting frame; 35, limiting port; 36, limiting block; 41, rotating rod; 42, second lead screw; 43, moving seat; 44, first gear; 45, second gear; 51, shaft rod; 52, eccentric wheel; 53, first sealing cylinder; 54, first sliding plug; 55, first ejector rod; 56, first spring; 57, mounting pipe; 58, check valve; 61, mounting frame; 62, second sealing cylinder; 63, second sliding plug; 64, second ejector rod; 65, second spring; 66, pushing block; 67, groove; 68, movable block; 69, third spring; 610, exhaust hole; 71, adsorption seat; 72, suction cup; 73, third sealing cylinder; 74, communicating pipe; 75, third sliding plug; 76, third ejector rod; 77, convex block. Detailed implementation mode

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0045] Refer to Figure 1 - Figure 15 , a safety-type pet treadmill, including a frame unit, a transmission unit, an adjustment unit and a tensioning unit. The frame unit includes a fixed frame 101 and a movable frame 102. The fixed frame 101 and the movable frame 102 can move relative to each other. Two slotted grooves 103 are provided on the fixed frame 101. Two connecting columns 104 are fixed on the movable frame 102. The two connecting columns 104 are respectively inserted into the two slotted grooves 103. A support frame 105 is fixed inside the fixed frame 101, and a support plate 106 is fixed inside the movable frame 102. The support plate 106 is inserted into the support frame 105. During the movement of the movable frame 102, the support plate 106 can also be driven to move, so that the support plate 106 extends into or slides out of the support frame 105. The designs of the support frame 105 and the support plate 106 provide a supporting effect for the pet, avoiding the situation that the drive belt 27 sags when the pet runs;

[0046] The transmission unit includes a transmission belt 27, which is arranged on the fixed frame 101 and the movable frame 102. The transmission unit further includes a first roller shaft 21, a second roller shaft 22, a third roller shaft 23, a fourth roller shaft 24, a frame body 25 and an adjusting roller shaft 26. The first roller shaft 21 and the second roller shaft 22 are rotatably installed on the fixed frame 101, the third roller shaft 23 and the fourth roller shaft 24 are rotatably installed on the movable frame 102, and the adjusting roller shaft 26 is rotatably installed on the frame body 25 (as Figure 11 shown). There is a gap between the adjusting roller shaft 26 and the inner surface of the frame body 25, and the transmission belt 27 passes through this gap. The first roller shaft 21, the second roller shaft 22, the third roller shaft 23 and the fourth roller shaft 24 are distributed at the four corners. The transmission belt 27 bypasses the first roller shaft 21, the third roller shaft 23, the fourth roller shaft 24, the second roller shaft 22 and the adjusting roller shaft 26. The first roller shaft 21 serves as a driving shaft for driving the transmission belt 27 to rotate. A vertical plate 2501 is fixed on the frame body 25;

[0047] The treadmill for pets proposed by the present invention has a retractable function. The outer shell of the treadmill is composed of a fixed frame 101 and a movable frame 102. The movable frame 102 can slide freely relative to the fixed frame 101. A motor (not shown in the figure) for driving the transmission belt 27 to rotate is installed on the fixed frame 101. When the motor operates, it drives the first roller shaft 21 to rotate. When the first roller shaft 21 rotates, it can drive the transmission belt 27 to rotate, enabling the pet to run on the transmission belt 27. The structure of the motor driving the first roller shaft 21 is prior art and is not shown in the figure and will not be elaborated here;

[0048] The adjusting unit is composed of a first adjusting component and a second adjusting component. The first adjusting component is arranged inside the fixed frame 101 to adjust the transmission belt 27, and the second adjusting component is arranged on the sides of the fixed frame 101 and the movable frame 102 to adjust the position of the movable frame 102. The first adjusting component includes a first lead screw 31, an adjusting seat 32, a connecting plate 33, a connecting frame 34, a limiting port 35 and a limiting block 36. The first lead screw 31 is rotatably installed inside the fixed frame 101, the adjusting seat 32 is threadedly sleeved on the first lead screw 31, and the adjusting seat 32 (as Figure 11The side surface (as shown) is in mutual contact with the inner surface of the fixed frame 101. One end of the connecting plate 33 is connected to the adjusting seat 32, and the other end of the connecting plate 33 is connected to the connecting frame 34. The end of the connecting frame 34 away from the connecting plate 33 is a U-shaped opening, and this U-shaped opening is stuck on the frame body 25. The limiting port 35 is opened at the end of the connecting frame 34 away from the connecting plate 33. The limiting block 36 is fixed on the side surface of the frame body 25, and the limiting block 36 slides in the limiting port 35. The second adjusting component includes a rotating rod 41, a second lead screw 42, a moving seat 43, a first gear 44 and a second gear 45. The rotating rod 41 is rotatably installed on the side surface of the fixed frame 101. The second lead screw 42 is fixed at the end of the rotating rod 41, and the second lead screw 42 and the rotating rod 41 are coaxially arranged. The moving seat 43 is threadedly sleeved on the second lead screw 42, and the moving seat 43 is fixed on the side surface of the movable frame 102. The first gear 44 is fixedly sleeved on one end of the first lead screw 31. The second gear 45 is fixedly sleeved on the end of the rotating rod 41 away from the second lead screw 42, and the first gear 44 and the second gear 45 are meshed with each other;

[0049] When the pet treadmill needs to be stored or transferred, the user first rotates the handwheel on the first lead screw 31 to make the first lead screw 31 rotate. Since the side surface of the adjusting seat 32 is in mutual contact with the side surface of the fixed frame, the adjusting seat 32 cannot rotate following the first lead screw 31, but will move under the rotation of the first lead screw 31. When the adjusting seat 32 moves, it can drive the connecting plate 33 to move. The connecting frame 34 connected to the connecting plate 33 moves accordingly, and the connecting frame 34 can also drive the frame body 25 to move, ultimately causing the adjusting roller shaft 26 to move. At the same time, when the first lead screw 31 rotates, it can also drive the rotating rod 41 to rotate through the meshed first gear 44 and second gear 45. When the rotating rod 41 rotates, it drives the second lead screw 42 to rotate. When the second lead screw 42 rotates, the moving seat 43 sleeved on the second lead screw 42 will move and drive the movable frame 102 to move, as Figure 6 shown. When the adjusting roller shaft 26 moves, it can push the transmission belt 27. When the adjusting roller shaft 26 moves towards the outside of the fixed frame 101, the transmission belt 27 can change as Figure 6 shown. At this time, the movable frame 102 will move towards the direction close to the fixed frame 101, which makes the overall length of the pet treadmill shorter. On the contrary, when the adjusting roller shaft 26 moves towards the inside of the fixed frame 101, the movable frame 102 will move away from the fixed frame 101, which makes the overall length of the pet treadmill longer;

[0050] In summary, the user can make the movable frame 102 move towards the direction close to the fixed frame 101 by rotating the first lead screw 31 until the movable frame 102 is in contact with the fixed frame 101, and finally form as Figure 5The state shown. In this case, the overall length of the pet treadmill will become shorter, which is beneficial to the storage and transfer of the pet treadmill. In addition, the adjustable frame design enables the pet treadmill to be suitable for pets of different sizes. For large pets, the user can increase the distance between the fixed frame 101 and the movable frame 102. For small pets, the user can decrease the distance between the fixed frame 101 and the movable frame 102. It should be noted that two slots 103 are provided on the fixed frame 101, and two connecting columns 104 are fixed on the movable frame 102. During the movement of the movable frame 102, the two connecting columns 104 will slide within the two slots 103. The design of the two slots 103 and the two connecting columns 104 provides a limit for the fixed frame 101 and the movable frame 102, ensuring the stability of the movable frame 102 during movement;

[0051] The tensioning unit is composed of a gas supply component and a pushing component. The gas supply component is arranged on the movable frame 102, and the pushing component is arranged inside the fixed frame 101. The gas supply component includes a shaft rod 51, an eccentric wheel 52, a first sealing cylinder 53, a first sliding plug 54, two mounting pipes 57 and two one-way valves 58. One end of the shaft rod 51 is connected to the fourth roller shaft 24 (as Figure 10 shown). The other end of the shaft rod 51 passes through the movable frame 102 and is rotatably connected to the movable frame 102. The eccentric wheel 52 is fixedly sleeved on the shaft rod 51, and the eccentric wheel 52 is eccentrically arranged with the shaft rod 51. The first sealing cylinder 53 is fixed on the side of the movable frame 102. The first sliding plug 54 is hermetically and slidably connected inside the first sealing cylinder 53. The first sliding plug 54 and the first sealing cylinder 53 are connected by a first spring 56. A first ejector rod 55 is fixed on the first sliding plug 54. One end of the first ejector rod 55 away from the first sliding plug 54 extends to the outside of the first sealing cylinder 53 and is arranged opposite to the eccentric wheel 52. One ends of the two mounting pipes 57 (as Figure 15 shown) are both communicated with the first sealing cylinder 53. The two one-way valves 58 are respectively installed on the two mounting pipes 57. One of the mounting pipes 57 is communicated with the outside for air extraction, and the other mounting pipe 57 is for exhaust;

[0052] The pushing component includes a mounting frame 61, a second sealing cylinder 62, a second sliding plug 63 and a pushing block 66. The mounting frame 61 is fixed on the side of the support frame 105. The second sealing cylinder 62 is fixed on the side of the mounting frame 61. The second sliding plug 63 is hermetically and slidably connected inside the second sealing cylinder 62. The second sliding plug 63 and the second sealing cylinder 62 are connected by a second spring 65. A second ejector rod 64 is fixed on the second sliding plug 63. One end of the second ejector rod 64 away from the second sliding plug 63 extends to the outside of the second sealing cylinder 62 and is fixedly connected to the pushing block 66. The pushing block 66 is arranged opposite to the vertical plate 2501. An exhaust hole 610 (as Figure 13 shown) is provided on the second sealing cylinder 62. The second sealing cylinder 62 is communicated with the mounting pipe 57 for exhaust;

[0053] Since the drive belt 27 in this pet treadmill is designed as an adjustable structure, compared with the traditional fixed drive belt 27, the adjustable drive belt 27 requires a tensioning function to ensure transmission stability. Therefore, the pet treadmill proposed by the present invention has a tensioning unit. Specifically, during the rotation of the drive belt 27, the fourth roller shaft 24 can be driven to rotate through friction. When the fourth roller shaft 24 rotates, the shaft rod 51 connected thereto rotates accordingly, and drives the eccentric wheel 52 to rotate. The eccentric wheel 52 is arranged opposite to the first ejector rod 55. Therefore, when the eccentric wheel 52 rotates, it can continuously squeeze the first ejector rod 55. When the eccentric wheel 52 squeezes the first ejector rod 55, the first ejector rod 55 will drive the first sliding plug 54 to move upward. When the eccentric wheel 52 is separated from the first ejector rod 55, the first sliding plug 54 will move downward and reset under the action of the first spring 56. Therefore, with the rotation of the eccentric wheel 52, the first sliding plug 54 will move up and down reciprocally inside the first sealing cylinder 53. Two mounting pipes 57 are connected to the first sealing cylinder 53, and one-way valves 58 are installed on both of the two mounting pipes 57, and the flow-limiting directions of the two one-way valves 58 are opposite. One of the one-way valves 58 restricts the gas to only enter the first sealing cylinder 53, and the other one-way valve 58 restricts the gas to only flow out of the first sealing cylinder 53. Under the one-way flow-limiting action of the two one-way valves 58, when the first sliding plug 54 moves upward, the first sliding plug 54 can push the gas in the first sealing cylinder 53 out through one of the mounting pipes 57. When the first sliding plug 54 moves downward, the gas in the external environment can be drawn into the inside of the first sealing cylinder 53 through the other mounting pipe 57. Based on the above process, with the up and down movement of the first sliding plug 54, the first sealing cylinder 53 will continuously supply gas to the inside of the second sealing cylinder 62, and the gas supply action is synchronized with the running action of the pet;

[0054] When the gas enters the interior of the second sealing cylinder 62, the gas can push the second sliding plug 63 to move, and the second ejector rod 64 connected to the second sliding plug 63 moves accordingly. When the second ejector rod 64 moves, the pushing block 66 on the second ejector rod 64 will push the vertical plate 2501, causing the vertical plate 2501 to drive the frame 25 to move. When the frame 25 moves, the adjusting roller shaft 26 thereon moves accordingly, so that the adjusting roller shaft 26 presses against the transmission belt 27. In this state, the adjusting roller shaft 26 provides a tensioning effect on the transmission belt 27 to ensure the transmission stability of the transmission belt 27. Compared with the traditional spring tensioning, the present invention adopts a pneumatic tensioning method, effectively avoiding the occurrence of spring elastic force loss and ensuring the smooth rotation of the transmission belt 27. In addition, when the adjusting roller shaft 26 presses against the transmission belt 27, the second sliding plug 63 and the second ejector rod 64 move to the limit position, but the gas will continue to enter the interior of the second sealing cylinder 62. At this time, the excess gas in the second sealing cylinder 62 can be discharged through the exhaust hole 610, enabling the air supply assembly to operate smoothly, thereby ensuring the stable operation of the entire device and avoiding the phenomenon of movement interference. The aperture of the exhaust hole 610 is small enough. In the initial stage of the air supply action, the air supply volume of the installation pipe 57 is much larger than the exhaust volume of the exhaust hole 610, enabling the gas to smoothly push the second sliding plug 63 to move. It should be noted that the limiting port 35 and the limiting block 36 provide limits to the frame 25. When the frame 25 moves, the limiting block 36 will slide within the limiting port 35. The design of the limiting port 35 and the limiting block 36 enables the adjusting roller shaft 26 to only move within a small range under the action of the tensioning unit, avoiding changes in the overall length of the pet treadmill housing while providing a tensioning effect;

[0055] Adsorption seats 71 are fixed on both the fixed frame 101 and the movable frame 102. The interiors of both adsorption seats 71 are hollow structures. A plurality of suction cups 72 are arranged on the bottom surface of each adsorption seat 71, and each suction cup 72 is communicated with the interior of the corresponding adsorption seat 71. An air extraction assembly is arranged on the mounting frame 61. The air extraction assembly includes a third sealing cylinder 73, a third sliding plug 75, a third ejector rod 76 and a convex block 77. The third sealing cylinder 73 is fixed on the side surface of the mounting frame 61. The third sliding plug 75 is hermetically and slidably connected to the interior of the third sealing cylinder 73. One end of the third ejector rod 76 is connected to the third sliding plug 75, and the other end of the third ejector rod 76 extends to the outside of the third sealing cylinder 73. The convex block 77 is fixed to the end of the third ejector rod 76 located outside the third sealing cylinder 73. Two communication pipes 74 are connected to the third sealing cylinder 73, and the ends of the two communication pipes 74 away from the third sealing cylinder 73 are respectively communicated with the two adsorption seats 71;

[0056] A movable member is arranged on the pushing block 66. The movable member includes a groove 67 and a movable block 68. The groove 67 is formed in the bottom surface of the pushing block 66. The movable block 68 slides in the groove 67. The bottom end of the movable block 68 extends to the outside of the groove 67. A third spring 69 is connected between the movable block 68 and the groove wall of the groove 67. One end of the movable block 68 located outside the groove 67 is provided with two inclined surfaces with opposite inclined directions, and both inclined surfaces face the convex block 77;

[0057] In the present invention, both the fixed frame 101 and the movable frame 102 are made of lightweight materials, such as plastic materials, which helps to reduce the overall weight of the treadmill and facilitates the transfer of the treadmill. Although the treadmill made of lightweight materials is easy to transfer, its self-weight is small, and it is prone to shaking, displacement and noise under the running actions of pets. In order to avoid this situation, the present invention designs two adsorption seats 71. The two adsorption seats 71 are respectively arranged on the fixed frame 101 and the movable frame 102, and each adsorption seat 71 is provided with a plurality of suction cups 72. When the pet treadmill is placed on the ground, the plurality of suction cups 72 can adsorb on the ground to provide preliminary fixation for the pet treadmill. When the pet treadmill is running, the air supply action is carried out along with the transmission of the transmission belt 27 and pushes the second sliding plug 63 to move. For the specific principle, refer to the above part and will not be elaborated here. In the initial stage of the movement of the second sliding plug 63 and the second ejector rod 64, before the pushing block 66 contacts the vertical plate 2501, the movable block 68 on the pushing block 66 will first contact the convex block 77 and push the third ejector rod 76 to move through the convex block 77. When the third ejector rod 76 moves, the third sliding plug 75 connected thereto moves accordingly. During the movement of the third sliding plug 75, it can extract the air inside the two adsorption seats 71 through the two communicating pipes 74. When the air inside the adsorption seat 71 is extracted, the plurality of suction cups 72 thereon can stably adsorb on the ground under the action of negative pressure, so as to ensure the stability of the fixed frame 101 and the movable frame 102 on the ground and avoid the shaking of the fixed frame 101 and the movable frame 102;

[0058] When the third ejector rod 76 and the third sliding plug 75 move to the limit position, the convex block 77 cannot move any further. At this time, the inclined surface provided on the movable block 68 comes into play. Specifically, the inclined surface on the movable block 68 will be mutually extruded with the convex block 77. When the convex block 77 cannot move, the movable block 68 can move under the action of the inclined surface and retract into the groove 67, which can avoid the movement interference between the convex block 77 and the movable block 68. It should be noted that when the movable block 68 pushes the convex block 77 to move, the resistance exerted by the convex block 77 on the movable block 68 cannot overcome the elastic force exerted by the third spring 69 on the movable block 68, so that the movable block 68 can smoothly push the convex block 77 to move. Only when the convex block 77 cannot move, the movable block 68 can retract into the groove 67 under the extrusion of the convex block 77.

[0059] As described above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A safety type treadmill for pets, characterized in that, It includes a frame unit, a transmission unit, an adjustment unit and a tensioning unit; Among them, the frame unit includes a fixed frame (101) and a movable frame (102). The fixed frame (101) and the movable frame (102) can move relative to each other. Two slots (103) are provided on the fixed frame (101). Two connecting columns (104) are fixed on the movable frame (102). The two connecting columns (104) are respectively inserted into the two slots (103). A support frame (105) is fixed inside the fixed frame (101), and a support plate (106) is fixed inside the movable frame (102). The support plate (106) is inserted into the support frame (105); Among them, the transmission unit includes a transmission belt (27), and the transmission belt (27) is arranged on the fixed frame (101) and the movable frame (102); Among them, the adjustment unit is composed of a first adjustment component and a second adjustment component. The first adjustment component is arranged inside the fixed frame (101) to adjust the transmission belt (27), and the second adjustment component is arranged on the sides of the fixed frame (101) and the movable frame (102) to adjust the position of the movable frame (102); Among them, the tensioning unit is composed of a gas supply component and a pushing component. The gas supply component is arranged on the movable frame (102), and the pushing component is arranged inside the fixed frame (101); The gas supply component includes a shaft rod (51), an eccentric wheel (52), a first sealing cylinder (53), a first sliding plug (54), two installation pipes (57) and two one-way valves (58). One end of the shaft rod (51) is connected to the fourth roller shaft (24). The other end of the shaft rod (51) passes through the movable frame (102) and is rotatably connected to the movable frame (102). The eccentric wheel (52) is fixedly sleeved on the shaft rod (51), and the eccentric wheel (52) is eccentrically arranged with the shaft rod (51). The first sealing cylinder (53) is fixed on the side of the movable frame (102). The first sliding plug (54) is hermetically and slidably connected inside the first sealing cylinder (53). The first sliding plug (54) and the first sealing cylinder (53) are connected by a first spring (56). A first ejector rod (55) is fixed on the first sliding plug (54). One end of the first ejector rod (55) far from the first sliding plug (54) extends to the outside of the first sealing cylinder (53) and is arranged opposite to the eccentric wheel (52). One ends of the two installation pipes (57) are both communicated with the first sealing cylinder (53). The two one-way valves (58) are respectively installed on the two installation pipes (57). One of the installation pipes (57) is communicated with the outside for air extraction, and the other installation pipe (57) is for exhaust; The pushing component includes a mounting frame (61), a second sealing cylinder (62), a second sliding plug (63) and a pushing block (66). The mounting frame (61) is fixed on the side surface of the support frame (105). The second sealing cylinder (62) is fixed on the side surface of the mounting frame (61). The second sliding plug (63) is hermetically and slidably connected inside the second sealing cylinder (62). A second spring (65) is connected between the second sliding plug (63) and the second sealing cylinder (62). A second ejector rod (64) is fixed on the second sliding plug (63). One end of the second ejector rod (64) far from the second sliding plug (63) extends to the outside of the second sealing cylinder (62) and is fixedly connected with the pushing block (66). The pushing block (66) is arranged opposite to the vertical plate (2501). An exhaust hole (610) is formed in the second sealing cylinder (62). The second sealing cylinder (62) is communicated with an installation pipe (57) for exhausting gas.

2. The safety type pet treadmill according to claim 1, characterized in that, The transmission unit further includes a first roller shaft (21), a second roller shaft (22), a third roller shaft (23), a fourth roller shaft (24), a frame body (25) and an adjusting roller shaft (26). The first roller shaft (21) and the second roller shaft (22) are rotatably installed on the fixed machine frame (101). The third roller shaft (23) and the fourth roller shaft (24) are rotatably installed on the movable machine frame (102). The adjusting roller shaft (26) is rotatably installed on the frame body (25). The first roller shaft (21), the second roller shaft (22), the third roller shaft (23) and the fourth roller shaft (24) are distributed at four corners. The transmission belt (27) bypasses the first roller shaft (21), the third roller shaft (23), the fourth roller shaft (24), the second roller shaft (22) and the adjusting roller shaft (26). The first roller shaft (21) serves as a driving shaft for driving the transmission belt (27) to rotate. A vertical plate (2501) is fixed on the frame body (25).

3. The safety type pet treadmill according to claim 1, wherein, The first adjusting component includes a first screw rod (31), an adjusting seat (32), a connecting plate (33), a connecting frame (34), a limiting port (35) and a limiting block (36). The first screw rod (31) is rotatably installed inside the fixed machine frame (101). The adjusting seat (32) is threadedly sleeved on the first screw rod (31). One end of the connecting plate (33) is connected with the adjusting seat (32). The other end of the connecting plate (33) is connected with the connecting frame (34). One end of the connecting frame (34) far from the connecting plate (33) is in a U-shaped opening which is clamped on the frame body (25). The limiting port (35) is formed in one end of the connecting frame (34) far from the connecting plate (33). The limiting block (36) is fixed on the side surface of the frame body (25) and slides in the limiting port (35).

4. The safety type pet treadmill according to claim 3, characterized in that, The second adjustment component includes a rotating rod (41), a second lead screw (42), a moving seat (43), a first gear (44) and a second gear (45). The rotating rod (41) is rotatably installed on the side of the fixed frame (101). The second lead screw (42) is fixed at the end of the rotating rod (41), and the second lead screw (42) and the rotating rod (41) are coaxially arranged. The moving seat (43) is threadedly sleeved on the second lead screw (42), and the moving seat (43) is fixed on the side of the movable frame (102). The first gear (44) is fixedly sleeved at one end of the first lead screw (31). The second gear (45) is fixedly sleeved at the end of the rotating rod (41) away from the second lead screw (42), and the first gear (44) and the second gear (45) are meshed with each other.

5. The safety-type pet treadmill according to claim 1, characterized in that, Adsorption seats (71) are fixed on both the fixed frame (101) and the movable frame (102). The interiors of the two adsorption seats (71) are both hollow structures. A plurality of suction cups (72) are arranged on the bottom surface of each adsorption seat (71). Each suction cup (72) is communicated with the interior of the corresponding adsorption seat (71). An air extraction component is arranged on the mounting frame (61), and a movable member is arranged on the push block (66). The air extraction component includes a third sealing cylinder (73), a third sliding plug (75), a third ejector rod (76) and a convex block (77). The third sealing cylinder (73) is fixed on the side of the mounting frame (61). The third sliding plug (75) is hermetically and slidably connected inside the third sealing cylinder (73). One end of the third ejector rod (76) is connected to the third sliding plug (75). The other end of the third ejector rod (76) extends to the outside of the third sealing cylinder (73). The convex block (77) is fixed at the end of the third ejector rod (76) located outside the third sealing cylinder (73). Two communication pipes (74) are connected to the third sealing cylinder (73). The ends of the two communication pipes (74) away from the third sealing cylinder (73) are respectively communicated with the two adsorption seats (71).

6. The safety type pet treadmill according to claim 5, wherein, The movable member includes a groove (67) and a movable block (68). The groove (67) is opened on the bottom surface of the push block (66). The movable block (68) slides in the groove (67). The bottom end of the movable block (68) extends to the outside of the groove (67), and the movable block (68) and the groove wall of the groove (67) are connected by a third spring (69). Two inclined surfaces with opposite inclination directions are arranged at the end of the movable block (68) located outside the groove (67). Both of the two inclined surfaces are arranged facing the convex block (77).

7. The safety type pet treadmill according to claim 2, wherein There is a gap between the adjusting roller shaft (26) and the inner surface of the frame body (25). The transmission belt (27) passes through this gap.

8. The safety type pet treadmill according to claim 3, wherein The side surface of the adjusting seat (32) is in mutual contact with the inner surface of the fixed frame (101).

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