Folding mechanism of treadmill running platform

Abstract

The utility model discloses a folding mechanism of a treadmill treadmill. The folding mechanism comprises at least two first fixing plates fixed to the end of a first treadmill frame and at least two second fixing plates fixed to the end of a second treadmill frame. The folding mechanism bodies are arranged on the corresponding first fixing plate and second fixing plate; each folding mechanism body comprises an outer auxiliary connecting plate, an outer main connecting plate, an inner main connecting plate and an inner auxiliary connecting plate from outside to inside; the outer main connecting plate is hinged to the inner main connecting plate, the outer main connecting plate is hinged to the first fixing plate through the outer auxiliary connecting plate, the outer main connecting plate is hinged to the second fixing plate, the inner main connecting plate is hinged to the first fixing plate, and the inner main connecting plate is hinged to the second fixing plate through the inner auxiliary connecting plate. Hinging is achieved through connection of a pin shaft and a pin hole, and at least one of the two plates which are hinged to each other can rotate relative to the pin shaft. The folding mechanism of the treadmill treadmill table can prevent shaking in the folding process, cost is relatively saved, and assembling is relatively convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to body -building equipment technical field, specifically is a folding mechanism of treadmill running board. BACKGROUND

[0002] At present, the foldable treadmill running board is popularized and applied widely, and the running board can be folded when needed, and the occupied space is reduced when transporting and storing at home.

[0003] The folding mechanism of the prior art treadmill running board has experienced several stages:

[0004] The initial folding mechanism of the treadmill running board generally adopts ordinary double-joint hinges and conventional industrial hinges, and is mostly installed on the front and rear running boards, which occupies a certain surface space of the front and rear running boards on the one hand, and affects the strength and service life on the other hand, and if the thickness of the board is increased greatly, the cost is increased, and the fitting degree and the same level degree of the end surface of the front and rear running boards after unfolding are not ideal.

[0005] The above structure has been improved by the later skilled person, and the folding mechanism is installed on the frame, and the folding mechanism is increased with a reset spring, but the fitting degree and the same level degree of the end surface of the front and rear running boards after unfolding are still not ideal.

[0006] In recent years, the skilled person has adopted a folding structure of slider, sliding column and sliding slot matched with each other at the end portions of the adjacent two frames, so that the fitting degree and the same level degree of the end surface of the front and rear running boards after unfolding are greatly improved.

[0007] However, the folding mechanism of the latter treadmill running board has new deficiencies in the actual application process: the sliding column and the sliding slot or the sliding long hole such as the arc-shaped long hole or the straight long hole are mutually shaken due to the inevitable gap during the folding process, and the material of the parts of the folding mechanism itself is required to be high such as tool steel, which relatively increases the material cost and the processing cost, and the assembly precision is required to be high, thereby relatively increasing the assembly difficulty. UTILITY MODEL CONTENTS

[0008] The utility model solves the technical problem of providing a folding mechanism of a treadmill running board which prevents shaking during folding, saves cost and is convenient to assemble.

[0009] The technical solution of the utility model discloses a folding mechanism of a treadmill running board, which comprises at least two first fixed plates fixed at the end of a first running board frame and at least two second fixed plates fixed at the end of a second running board frame.

[0010] After the above structure is adopted, the folding mechanism of the utility model has the following advantages: two inner and outer main connecting plates and two inner and outer auxiliary connecting plates are hinged to the respective fixed plates of the first running board (the front running board) and the second running board (the rear running board), and the hinge is a pin shaft and a pin hole connection, and at least one of the two hinged plates can rotate relative to the pin shaft, which replaces the sliding connection of the sliding column and the sliding groove or the sliding long hole, has high hinge precision, maintains the good end surface adhesion and the good horizontal degree of the first running board and the second running board (the left and right running boards) after unfolding, and basically eliminates the shaking phenomenon caused by the gap.

[0011] Further, the end of the first running board frame is the end of each of the two first longitudinal rods, and the end of the second running board frame is the end of each of the two second longitudinal rods.

[0012] Further, in the unfolded state when the treadmill is placed horizontally: the first outer pin hole on the upper part of the outer auxiliary connecting plate is hingedly connected with the first inner pin hole on one end of the upper part of the outer main connecting plate via a first pin shaft; the second outer pin hole on the lower part of the outer auxiliary connecting plate is hingedly connected with the second inner pin hole on the lower part of the second fixed plate away from the second fixed plate via a second pin shaft; the third outer pin hole on the other end of the upper part of the outer main connecting plate is hingedly connected with the third inner pin hole on the upper part of the second fixed plate close to the first fixed plate via a third pin shaft; the fourth outer pin hole on the lower part of the outer main connecting plate is hingedly connected with the fourth inner pin hole on the lower part of the inner main connecting plate via a fourth pin shaft; the fifth inner pin hole on one end of the upper part of the inner main connecting plate is hingedly connected with the fifth outer pin hole on the upper part of the first fixed plate close to the second fixed plate via a fifth pin shaft; the sixth inner pin hole on the lower part of the inner auxiliary connecting plate is hingedly connected with the sixth outer pin hole on the lower part of the second fixed plate away from the first fixed plate via a sixth pin shaft; the seventh inner pin hole on the upper part of the inner auxiliary connecting plate is hingedly connected with the seventh outer pin hole on the other end of the inner main connecting plate via a seventh pin shaft; the lower part of the first fixed plate and the second fixed plate adjacent to each other is cut off to leave a position for installing the fourth pin shaft; the lower part of one end of the outer main connecting plate is cut off to leave a position for installing the second pin shaft; the lower part of the other end of the inner main connecting plate is cut off to leave a position for installing the sixth pin shaft. After the above specific hinged structure is adopted between each pin shaft and each pin hole, the hinged precision is further ensured, the end faces of the first running plate and the second running plate after unfolding are well adhered and have good horizontal degree, the shaking phenomenon caused by the gap is basically eliminated, the cost is relatively reduced, the assembly process is simple, convenient and fast, and the technical effects of high precision, good adhesion, good horizontal degree, elimination of shaking phenomenon, cost reduction, simple assembly process, convenience and speed are achieved.

[0013] Further, the edge of the first fixed plate close to one end of the second fixed plate is a bevel, the edge of the second fixed plate close to one end of the first fixed plate is a bevel, the distance between the first fixed plate and the second fixed plate in the unfolded state when the treadmill is placed horizontally gradually increases from top to bottom, and the included angle between each bevel and the top edge is an arc angle; the outer main connecting plate is a triangle with one end close to the second fixed plate being large and the other end away from the second fixed plate being small, and the three angles of the triangle are arc angles; the inner main connecting plate is a triangle with one end close to the first fixed plate being large and the other end away from the first fixed plate being small, and the three angles of the triangle are arc angles. After the above specific structure is adopted, interference between all parts is completely avoided, the folding and unfolding of the first treadmill and the second treadmill are further eliminated, and the process is flexible, smooth, stable and reliable.

[0014] Further, a first small-diameter column of a first stepped column of a first pin shaft is contained in and fixed in a first inner pin hole of an outer main connecting plate, a first screw is screwed in a first threaded hole of the first stepped column through a first outer pin hole of an outer auxiliary connecting plate, and the first outer pin hole of the outer auxiliary connecting plate is rotationally matched with a first large-diameter column of the first stepped column. The seventh pin shaft is the same in structure as the first pin shaft and is symmetrically arranged. After the above structure is adopted, the first running plate and the second running plate after being unfolded are further ensured to have good end surface adhesion and good horizontal degree, the shaking phenomenon caused by the gap is basically eliminated, the cost is relatively reduced, the assembly process is simple, convenient and fast, and the technical effects are achieved.

[0015] Further, a second small-diameter column of a second stepped column of a second pin shaft is contained in and fixed in a second inner pin hole of a first fixed plate, a second screw is screwed in a second threaded hole of the second stepped column through a second outer pin hole of an outer auxiliary connecting plate, a second large-diameter column of the second stepped column is an axially spaced segment, the second outer pin hole of the outer auxiliary connecting plate is rotationally matched with a second middle-diameter column of the second stepped column, and a second screw is screwed in a second threaded hole of the second stepped column. The sixth pin shaft is the same in structure as the second pin shaft and is symmetrically arranged. After the above structure is adopted, the first running plate and the second running plate after being unfolded are further ensured to have good end surface adhesion and good horizontal degree, the shaking phenomenon caused by the gap is basically eliminated, the cost is relatively reduced, the assembly process is simple, convenient and fast, and the technical effects are achieved.

[0016] Further, a third large-diameter column of a third stepped column of a third pin shaft is an axially limiting column, a rear segment of a third small-diameter column of the third stepped column is contained in a third inner pin hole of a second fixed plate, a third outer pin hole of an outer main connecting plate is rotationally matched with a part of the third small-diameter column of the third stepped column that extends out of the second fixed plate, and a third screw is screwed in a third threaded hole of the third stepped column through the third outer pin hole of the outer main connecting plate. The fifth pin shaft is the same in structure as the third pin shaft and is symmetrically arranged. After the above structure is adopted, the first running plate and the second running plate after being unfolded are further ensured to have good end surface adhesion and good horizontal degree, the shaking phenomenon caused by the gap is basically eliminated, the cost is relatively reduced, the assembly process is simple, convenient and fast, and the technical effects are achieved.

[0017] Further, a fourth step column of a fourth pin shaft is a fourth large-diameter column, a fourth inner small-diameter column of the fourth step column is rotationally matched with a fourth inner pin hole of an inner main connecting plate, a fourth inner screw is screwed in an inner threaded hole of the fourth step column; a fourth outer small-diameter column of the fourth step column is rotationally matched with a fourth outer pin hole of an outer main connecting plate, a fourth outer screw is screwed in an outer threaded hole of the fourth step column. After the above structure is adopted, from the specific structure and mutual cooperation of the fourth pin shaft and the fourth pin hole, the technical effects that the first running plate and the second running plate after unfolding maintain good end surface adhesion and good horizontal degree, the shaking phenomenon caused by the gap is basically eliminated, the cost is relatively reduced, the assembly process is simple, convenient and fast are further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structure schematic view of the treadmill unfolded and laid flat when the folding mechanism of the preferred embodiment of the utility model is installed.

[0019] Figure 2 is Figure 1 is an enlarged structure schematic view of A in

[0020] Figure 3 is Figure 2 is an exploded structure schematic view of the folding mechanism preferred embodiment in

[0021] Figure 4 is a structure schematic view of the treadmill folded when the folding mechanism of the preferred embodiment of the utility model is installed.

[0022] Figure 5 is Figure 4 is an enlarged structure schematic view of B in

[0023] Figure 6 is Figure 4 is an enlarged structure schematic view of C in

[0024] shown in the figure:

[0025] 1, the first running track, (11), the first frame, (12), the first longitudinal rod, (13), the first transverse rod, 14, the first running plate, 15, the first fixed plate, 151, the second inner pin hole, 152, the fifth outer pin hole, 153, the first bevel edge, 154, the first top edge;

[0026] 2, the second running track, 21, the second frame, 22, the second longitudinal rod, 23, the second transverse rod, 24, the second running plate, 25, the second fixed plate, 251, the third inner pin hole, 252, the sixth outer pin hole, 253, the second bevel edge, 254, the second top edge;

[0027] 3, the outer auxiliary connecting plate, 31, the first outer pin hole, 32, the second outer pin hole;

[0028] 4. outer main connecting plate, 41, first inner pin hole, 42, third outer pin hole, 43, fourth outer pin hole;

[0029] 5. inner main connecting plate, 51, fourth inner pin hole, 52, fifth inner pin hole, 53, seventh outer pin hole;

[0030] 6. inner auxiliary connecting plate, 61, sixth inner pin hole, 62, seventh inner pin hole;

[0031] 7. first pin shaft, 71, first stepped column, 711, first small-diameter column, 712, first threaded hole, 713, first large-diameter column, 72, first screw, 73, first inner spacer, 74, first outer spacer;

[0032] 8. second pin shaft, 81, second stepped column, 811, second small-diameter column, 812, second large-diameter column, 813, second medium-diameter column, 814, second threaded hole, 82, second screw, 83, second inner spacer, 84, second outer spacer;

[0033] 9. third pin shaft, 91, third stepped column, 911, third small-diameter column, 912, third threaded hole, 913, third large-diameter column, 92, third screw, 93, third inner spacer, 94, third outer spacer;

[0034] 10. fourth pin shaft, 101, fourth stepped column, 1011, fourth large-diameter column, 1012, fourth inner small-diameter column, 1013, fourth outer threaded hole, 1014, fourth outer small-diameter column, 102, fourth inner screw, 103, fourth outer screw, 104, fourth inner spacer, 105, fourth outer spacer;

[0035] 11. fifth pin shaft, 111, fifth stepped column, 1111, fifth small-diameter column, 1112, fifth large-diameter column, 112, fifth screw, 113, fifth outer spacer, 114, fifth inner spacer;

[0036] 12. sixth pin shaft, 121, sixth stepped column, 1211, sixth small-diameter column, 1212, sixth large-diameter column, 1213, sixth medium-diameter column, 122, sixth screw, 123, sixth inner spacer, 124, sixth outer spacer;

[0037] 13. seventh pin shaft, 131, seventh stepped column, 1311, seventh small-diameter column, 1312, seventh large-diameter column, 132, seventh screw, 133, seventh outer spacer, 134, seventh inner spacer. DETAILED DESCRIPTION

[0038] The utility model discloses a further description of the specific implementation of the utility model below in conjunction with the drawings. It needs to declare here that the description of these specific implementations is used to help understanding the utility model, but does not constitute the limitation to the utility model. In addition, the technical features involved in each specific implementation of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0039] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 .

[0040] The treadmill is also called the walking machine, and the structure of the treadmill is same with the walking machine, and the difference is generally in the power of motor or / and the rotating speed of motor, and it is not difficult to understand that the power of motor of the treadmill is bigger and the rotating speed of motor is faster compared with the walking machine. Also, it is not difficult to understand that the frame of the first running platform 1 such as the first frame (11) includes two first longitudinal rods (12) which are parallel to each other and a plurality of cross rods such as the first cross rod (13) which are connected with the two first longitudinal rods (12), and the running board such as the first running board 14 is generally fixed on the plurality of cross rods such as the first cross rod (13). The frame of the second running platform 2 such as the second frame 21 includes two longitudinal rods such as the second longitudinal rod 22 which are parallel to each other and a plurality of cross rods such as the second cross rod 23 which are connected with the two second longitudinal rods 22, and the running board such as the second running board 24 is generally fixed on the plurality of cross rods such as the second cross rod 23.

[0041] The preferred embodiment of the folding mechanism of the running platform of the treadmill of the utility model includes at least two first fixing plates 15 which are fixed with the end of the frame of the first running platform 1 such as the first frame (11) and at least two second fixing plates 25 which are fixed with the end of the frame of the second running platform such as the second frame 21. The preferred embodiment of the folding mechanism of the running platform of the treadmill of the utility model further includes the folding mechanism body which is arranged on the corresponding first fixing plate 15 and second fixing plate 25.

[0042] It is not difficult to understand that a set of folding mechanism body is arranged on a first fixing plate 15 and a second fixing plate 25. The corresponding refers to that a set of folding mechanism body corresponds to a first fixing plate 15 and a second fixing plate 25. Generally, a treadmill is provided with two sets of folding mechanism bodies on the front and back sides, so that the first fixing plate 15 has only two pieces, and the second fixing plate 25 also has only two pieces. The wording of at least two first fixing plates 15 and at least two second fixing plates 25 refers to that if three or four sets of folding mechanisms are arranged on a treadmill, and the first fixing plate has three or four pieces, and the second fixing plate has three or four pieces, etc., it is also within the protection scope of the application.

[0043] Each set of folding mechanism body includes from outside to inside outer auxiliary connecting plate 3, outer main connecting plate 4, inner main connecting plate 5 and inner auxiliary connecting plate 6. Outer main connecting plate 4 is hinged with inner main connecting plate 5, outer main connecting plate 4 is hinged with first fixed plate 15 through outer auxiliary connecting plate 3, outer main connecting plate 4 is hinged with second fixed plate 25, inner main connecting plate 5 is hinged with first fixed plate 15, and inner main connecting plate 5 is hinged with second fixed plate 25 through inner auxiliary connecting plate 6. The hinged connection is pin shaft and pin hole connection, and at least one of the two hinged plates can rotate relative to the pin shaft. It is not difficult to understand that the structure of each set of folding mechanism body on the front and rear sides as shown in Figure 1 is the same and symmetrically arranged, that is, the directions are opposite, such as the front side outer auxiliary connecting plate 3 is at the frontmost side, and the rear side outer auxiliary connecting plate 3 is at the rearmost side, etc.

[0044] First fixed plate 15 is fixed with the end of first frame (11), which can be welded as shown in Figure 1 The end of the frame of the left treadmill, such as the end of the two first longitudinal rods (12), is fixed, such as welded, with the respective first fixed plate 15. Second fixed plate 25 is fixed with the end of second frame 21, which can be welded as shown in Figure 1 The end of the frame of the right treadmill, such as the end of the two second longitudinal rods 22, is fixed, such as welded, with the respective second fixed plate 25. It is not difficult to understand that the end described here refers to the adjacent end of the first treadmill 1 and the second treadmill 2, that is, the adjacent end of the respective first longitudinal rod 12 and the respective second longitudinal rod 22, such as Figure 1 The adjacent end of the front first longitudinal rod 12 and the front second longitudinal rod 22, and the adjacent end of the rear first longitudinal rod 12 and the rear second longitudinal rod 22. Of course, the first fixed plate can also be fixed, such as welded, on the outer side of a first cross rod at the adjacent end of the first frame, and the second fixed plate can also be fixed, such as welded, on the outer side of a second cross rod at the adjacent end of the second frame. But it is preferred that the first fixed plate 15 is fixed, such as welded, on the respective end of the two first longitudinal rods 12, and the second fixed plate 22 is fixed, such as welded, on the end of the two second longitudinal rods 22.

[0045] As shown in Figure 1 , Figure 2 and Figure 3 , in the unfolded state when the treadmill is placed horizontally:

[0046] The first outer pin hole 31 on the upper part of the outer auxiliary connecting plate 3 is hinged with the first inner pin hole 41 on one end of the upper part of the outer main connecting plate 4 through the first pin shaft 7; the second outer pin hole 32 on the lower part of the outer auxiliary connecting plate 3 is hinged with the second inner pin hole 151 on the lower part of the first fixed plate 15 away from the second fixed plate 25 through the second pin shaft 8; the third outer pin hole 42 on the other end of the upper part of the outer main connecting plate 4 is hinged with the third inner pin hole 251 on the upper part of the second fixed plate 25 close to the first fixed plate 15 through the third pin shaft 9; the fourth outer pin hole 43 on the lower part of the outer main connecting plate 4 is hinged with the fourth inner pin hole 51 on the lower part of the inner main connecting plate 5 through the fourth pin shaft 10; the fifth inner pin hole 52 on one end of the upper part of the inner main connecting plate 5 is hinged with the fifth outer pin hole 152 on the upper part of the first fixed plate 15 close to the second fixed plate 25 through the fifth pin shaft 11; the sixth inner pin hole 61 on the lower part of the inner auxiliary connecting plate 6 is hinged with the sixth inner pin hole 61 on the lower part of the second fixed plate 25 away from the first fixed plate 15 through the sixth pin shaft 12; the seventh inner pin hole 62 on the upper part of the inner auxiliary connecting plate 6 is hinged with the seventh outer pin hole 53 on the other end of the inner main connecting plate 5 through the seventh pin shaft 13.

[0047] The lower part of the first fixed plate 15 and the second fixed plate 25 is cut off to leave a position for installing the fourth pin shaft 10. The lower part of one end of the outer main connecting plate 4 is cut off to leave a position for installing the second pin shaft 8. The lower part of the other end of the inner main connecting plate 5 is cut off to leave a position for installing the sixth pin shaft 12. The following specific structure can be adopted: the edge of the first fixed plate 15 close to one end of the second fixed plate 25 is a bevel edge, the edge of the second fixed plate 25 close to one end of the first fixed plate 15 is also a bevel edge, the distance between the first fixed plate 15 and the second fixed plate 25 gradually increases from top to bottom in the unfolded state when the running track is placed horizontally, which can also be described as the bevel edge of the first fixed plate 15 is a bevel edge with high top and low bottom such as the first bevel edge 153, and the bevel edge of the second fixed plate 25 is a bevel edge with high top and low bottom such as the second bevel edge 253. The included angle between each bevel edge and the top edge is an arc angle, such as the included angle between the first bevel edge 153 and the first top edge 154 is an arc angle, and such as the included angle between the second bevel edge 253 and the second top edge 254 is also an arc angle. The outer main connecting plate 4 is a triangle with one end close to the second fixed plate 25 being large and the other end away from the second fixed plate 25 being small, and the three angles of the triangle are arc angles. The inner main connecting plate 5 is a triangle with one end close to the first fixed plate 15 being large and the other end away from the first fixed plate 15 being small, and the three angles of the triangle are arc angles.

[0048] The specific structure of the first pin shaft 7 and the specific cooperation relationship with the first outer pin hole 31 and the first inner pin hole 41 are as follows: the first small-diameter column 711 of the first step column 71 of a first pin shaft 7 is accommodated in the first inner pin hole 41 of the outer main connecting plate 4 and is fixed, such as welding, a first screw 72 is screwed in the first threaded hole 712 of the first step column 71 through the first outer pin hole 31 of the outer auxiliary connecting plate 3, and the first outer pin hole 31 of the outer auxiliary connecting plate 3 is in rotational cooperation with the first large-diameter column 713 of the first step column 71. A first inner gasket 73 can be fitted on the first small-diameter column 711 of the first step column 71, and the first inner gasket 73 is located between the outer main connecting plate 4 and the first large-diameter column 713 of the first step column 71; two first outer gaskets 74 can be fitted on the first large-diameter column 713 of the first step column 71 as shown in the figure, and the two first outer gaskets 74 are located between the large head of the first screw 72 and the outer auxiliary connecting plate 3.

[0049] The seventh pin shaft 13 is the same structure as the first pin shaft 7 and is symmetrically arranged, that is, the direction is exactly opposite, the first pin shaft 7 is backward, and the seventh pin shaft 13 is forward. The specific structure of the seventh pin shaft 13 and the specific cooperation relationship with the seventh inner pin hole 62 and the seventh outer pin hole 53 are as follows: the seventh small-diameter column 1311 of the seventh step column 131 of a seventh pin shaft 13 is accommodated in the seventh outer pin hole 53 of the inner main connecting plate 5 and is fixed, such as welding, a seventh screw 132 is screwed in the seventh threaded hole of the seventh step column 131 through the seventh inner pin hole 62 of the inner auxiliary connecting plate 6, and the seventh inner pin hole 62 of the inner auxiliary connecting plate 6 is in rotational cooperation with the seventh large-diameter column 1312 of the seventh step column 131. A seventh outer gasket 133 can be fitted on the seventh small-diameter column 1311 of the seventh step column 131, and the seventh outer gasket 133 is located between the inner main connecting plate 5 and the seventh large-diameter column 1312 of the seventh step column 131; two seventh inner gaskets 134 can be fitted on the seventh large-diameter column 1312 of the seventh step column 131 as shown in the figure, and the two seventh inner gaskets 134 are located between the large head of the seventh screw 132 and the inner auxiliary connecting plate 6.

[0050] The specific structure of the second pin shaft 8 and the specific matching relationship with the second outer pin hole 32 and the second inner pin hole 151 are as follows: the second small-diameter column 811 of the second stepped column 81 of the second pin shaft 8 is accommodated in the second inner pin hole 151 of the first fixed plate 15 and is fixed, such as welding, a second screw 82 is screwed in the second threaded hole 814 of the second stepped column 81 through the second outer pin hole 32 of the outer auxiliary connecting plate 3, the second large-diameter column 812 of the second stepped column 81 is an axial interval section, the second outer pin hole 32 of the outer auxiliary connecting plate 3 is rotationally matched with the second medium-diameter column 813 of the second stepped column 81, and a second screw 82 is screwed in the second threaded hole 814 of the second stepped column 81. The inner section of the second medium-diameter column 813 of the second stepped column 81 can be sleeved with a second inner gasket 83; the second medium-diameter column 813 of the second stepped column 81 can extend out of the outer auxiliary connecting plate 3 by a section, and a second outer gasket 84, such as the two second outer gaskets 84 shown in the figure, can be sleeved on the extended section, and the two second outer gaskets 84 are located between the large head of the second screw 82 and the outer auxiliary connecting plate 3. It is not difficult to understand that the distance of the axial interval section plus the second inner gasket 83 is the distance between the outer auxiliary connecting plate 3 and the first fixed plate 15.

[0051] The sixth pin shaft 12 has the same structure as the second pin shaft 8 and is symmetrically arranged, that is, the directions are exactly opposite, the second pin shaft 8 is backward, and the sixth pin shaft 12 is forward. The specific structure of the sixth pin shaft 12 and the specific matching relationship with the sixth outer pin hole 252 and the sixth inner pin hole 61 are as follows: the sixth small-diameter column 1211 of the sixth stepped column 121 of the sixth pin shaft 12 is accommodated in the sixth outer pin hole 252 of the second fixed plate 25 and is fixed, such as welding, the sixth large-diameter column 1212 of the sixth stepped column 121 is an axial interval section, the sixth inner pin hole 61 of the inner auxiliary connecting plate 6 is rotationally matched with the sixth medium-diameter column 1213 of the sixth stepped column 121, and a sixth screw 122 is screwed in the sixth threaded hole of the sixth stepped column 121. The inner section of the sixth medium-diameter column 1213 of the sixth stepped column 121 can be sleeved with a sixth outer gasket 124; the sixth medium-diameter column 1213 of the sixth stepped column 121 can extend out of the inner auxiliary connecting plate 6 by a section, and a sixth inner gasket 123, such as the two sixth inner gaskets 123 shown in the figure, can be sleeved on the extended section, and the two sixth gaskets 123 are located between the large head of the sixth screw 122 and the inner auxiliary connecting plate 6. It is not difficult to understand that the distance of the axial interval section plus the sixth outer gasket 124 is the distance between the inner auxiliary connecting plate 6 and the second fixed plate 25.

[0052] The specific structure of the third pin shaft 9 and the specific matching relationship with the third outer pin hole 42 and the third inner pin hole 251 are as follows: the third large-diameter column 913 of the third stepped column 91 of the third pin shaft 9 is an axial limiting column, the rear section of the third small-diameter column 911 of the third stepped column 91 is accommodated in the third inner pin hole 251 of the second fixed plate 25 and can be fixed, such as being welded, the third outer pin hole 42 of the outer main connecting plate 4 is rotationally matched with the part of the third small-diameter column 911 of the third stepped column 91 that protrudes from the second fixed plate 25, a third screw 92 is screwed in the third threaded hole 912 of the third stepped column 91 through the third outer pin hole 42 of the outer main connecting plate 4. A third inner gasket 93 can be sleeved on the third small-diameter column 911 of the third stepped column 91 and located between the second fixed plate 25 and the outer main connecting plate 4; the third small-diameter column 911 of the third stepped column 91 can protrude from the outer main connecting plate 4 by a segment, and a third outer gasket 94, such as the two third outer gaskets 94 shown in the figure, can be sleeved on the protruding segment, and the two third outer gaskets 94 are located between the large head of the third screw 92 and the outer main connecting plate 4.

[0053] The fifth pin shaft 11 is the same in structure as the third pin shaft 9 and is symmetrically arranged, that is, the directions are exactly opposite, the third pin shaft 9 is rearward, and the fifth pin shaft 11 is forward. The specific structure of the fifth pin shaft 11 and the specific matching relationship with the fifth outer pin hole 152 and the fifth inner pin hole 52 are as follows: the fifth large-diameter column 1112 of the fifth stepped column 111 of the fifth pin shaft 11 is an axial limiting column, the rear section of the fifth small-diameter column 1111 of the fifth stepped column 111 is accommodated in the fifth outer pin hole 152 of the first fixed plate 15 and can be fixed, such as being welded, the fifth inner pin hole 52 of the inner main connecting plate 5 is rotationally matched with the part of the fifth small-diameter column 1111 of the fifth stepped column 111 that protrudes from the first fixed plate 15, and a fifth screw 112 is screwed in the fifth threaded hole of the fifth stepped column 111 through the fifth inner pin hole 52 of the inner main connecting plate 5. A fifth outer gasket 113 can be sleeved on the fifth small-diameter column 1111 of the fifth stepped column 111 and located between the first fixed plate 15 and the inner main connecting plate 5; the fifth small-diameter column 1111 of the fifth stepped column 111 can protrude from the inner main connecting plate 5 by a segment, and a fifth inner gasket 114, such as the two fifth inner gaskets 114 shown in the figure, can be sleeved on the protruding segment, and the two fifth inner gaskets 114 are located between the large head of the fifth screw 112 and the inner main connecting plate 5.

[0054] The fourth pin shaft 10 has a fourth step column 101, a fourth large-diameter column 1011, a fourth inner small-diameter column 1012, a fourth outer small-diameter column 1014, a fourth threaded hole 1013, and a fourth inner screw 102. The fourth large-diameter column 1011 is an axial spacing section between the outer main connecting plate 4 and the inner main connecting plate 5. The fourth inner small-diameter column 1012 is in rotational cooperation with the fourth inner pin hole 51 of the inner main connecting plate 5. The fourth outer small-diameter column 1014 is in rotational cooperation with the fourth outer pin hole 43 of the outer main connecting plate 4. The fourth inner screw 102 is screwed into the fourth threaded hole 1013 of the fourth step column 101. The fourth inner small-diameter column 1012 of the fourth step column 101 can be sleeved with a fourth inner gasket 104 between the head of the fourth inner screw 102 and the inner main connecting plate 5. The fourth outer small-diameter column 1014 of the fourth step column 101 can extend out of the outer main connecting plate 4 and be sleeved with a fourth outer gasket 105, as shown in the figure.

[0055] The welding described above can be spot welding. The inner ring surface of the head of all the screws can be provided with a ring of pressing teeth, which has good anti-loosening effect after fastening. The front, rear, left, right, and other orientation terms are for easy description and are not limiting. The pin hole is also called an axle hole. The pin shaft is also called a hinge pin. The gasket is also called a washer. The screw is also called a bolt.

[0056] The parts or structures or quantities not marked above are not shown in the figure. The figure is only schematic. In case of inconsistency between the figure and the written description, or inconsistency between the figures, the written description shall prevail.

[0057] The above description is only the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A folding mechanism for a treadmill deck, characterized by: The first fixed plate and the second fixed plate are fixed to the end of the first treadmill frame and the end of the second treadmill frame respectively; the folding mechanism body is arranged on the corresponding first fixed plate and second fixed plate, each set of folding mechanism body comprises an outer auxiliary connecting plate, an outer main connecting plate, an inner main connecting plate and an inner auxiliary connecting plate from outside to inside; the outer main connecting plate is hinged with the inner main connecting plate, the outer main connecting plate is hinged with the first fixed plate through the outer auxiliary connecting plate, the outer main connecting plate is hinged with the second fixed plate, the inner main connecting plate is hinged with the first fixed plate, and the inner main connecting plate is hinged with the second fixed plate through the inner auxiliary connecting plate; the hinge is a pin shaft and a pin hole connection, and at least one of the two hinged plates can rotate relative to the pin shaft.

2. The folding mechanism of a treadmill deck according to claim 1, characterized in that: The end of the first treadmill frame refers to the end of each first longitudinal rod, and the end of the second treadmill frame refers to the end of each second longitudinal rod.

3. The folding mechanism of a treadmill deck as set forth in claim 1, wherein: When the treadmill is placed horizontally in the unfolded state: The first outer pin hole in the upper part of the outer auxiliary connecting plate is hinged with the first inner pin hole in one end of the upper part of the outer main connecting plate through the first pin shaft; the second outer pin hole in the lower part of the outer auxiliary connecting plate is hinged with the second inner pin hole in the lower part of the first fixed plate away from the second fixed plate through the second pin shaft; the third outer pin hole in the other end of the upper part of the outer main connecting plate is hinged with the third inner pin hole in the upper part of the second fixed plate close to the first fixed plate through the third pin shaft; the fourth outer pin hole in the lower part of the outer main connecting plate is hinged with the fourth inner pin hole in the lower part of the inner main connecting plate through the fourth pin shaft; the fifth inner pin hole in one end of the upper part of the inner main connecting plate is hinged with the fifth outer pin hole in the upper part of the first fixed plate close to the second fixed plate through the fifth pin shaft; the sixth inner pin hole in the lower part of the inner auxiliary connecting plate is hinged with the sixth outer pin hole in the lower part of the second fixed plate away from the first fixed plate through the sixth pin shaft; the seventh inner pin hole in the upper part of the inner auxiliary connecting plate is hinged with the seventh outer pin hole in the other end of the inner main connecting plate through the seventh pin shaft; The lower part of the first fixed plate and the second fixed plate adjacent to each other is cut off to leave a position for installing the fourth pin shaft; the lower part of one end of the outer main connecting plate is cut off to leave a position for installing the second pin shaft; the lower part of the other end of the inner main connecting plate is cut off to leave a position for installing the sixth pin shaft.

4. The folding mechanism of a treadmill deck according to claim 3, wherein: The edge of the first fixed plate close to the second fixed plate is an inclined edge, and the edge of the second fixed plate close to the first fixed plate is an inclined edge; the distance between the first fixed plate and the second fixed plate gradually increases from top to bottom when the treadmill is placed horizontally in the unfolded state, and the included angle between the respective inclined edge and the top edge is an arc angle; the outer main connecting plate is a triangle with one end close to the second fixed plate being large and the other end away from the second fixed plate being small, and the three angles of the triangle are arc angles; the inner main connecting plate is a triangle with one end close to the first fixed plate being large and the other end away from the first fixed plate being small, and the three angles of the triangle are arc angles.

5. The folding mechanism for a treadmill of claim 1, wherein: The first small diameter column of the first step column of a first pin shaft is contained in the first inner pin hole of the outer main connecting plate and fixed, a first screw is screwed into the first threaded hole of the first step column through the first outer pin hole of the outer auxiliary connecting plate, and the first outer pin hole of the outer auxiliary connecting plate and the first large diameter column of the first step column are in rotating cooperation; the seventh pin shaft is the same as the first pin shaft in structure and is symmetrically arranged.

6. The folding mechanism for a treadmill of claim 1, wherein: The second small-diameter column of the second stepped column of the second pin shaft is contained in and fixed in the second inner pin hole of the first fixed plate, a second screw is screwed in the second threaded hole of the second stepped column through the second outer pin hole of the outer auxiliary connecting plate, the second large-diameter column of the second stepped column is an axially spaced section, the second outer pin hole of the outer auxiliary connecting plate is in rotational cooperation with the second medium-diameter column of the second stepped column, and a second screw is screwed in the second threaded hole of the second stepped column; the sixth pin shaft is the same as the second pin shaft in structure and is symmetrically arranged.

7. The folding mechanism for a treadmill of claim 1, wherein: The third large-diameter column of the third stepped column of the third pin shaft is an axially limiting column, the rear section of the third small-diameter column of the third stepped column is contained in the third inner pin hole of the second fixed plate, the third outer pin hole of the outer main connecting plate is in rotational cooperation with the part of the third small-diameter column of the third stepped column that protrudes from the second fixed plate, and a third screw is screwed in the third threaded hole of the third stepped column through the third outer pin hole of the outer main connecting plate; the fifth pin shaft is the same as the third pin shaft in structure and is symmetrically arranged.

8. The folding mechanism for a treadmill of claim 1, wherein: The fourth stepped column of the fourth pin shaft has a fourth large-diameter column in the middle, the fourth inner small-diameter column of the fourth stepped column is in rotational cooperation with the fourth inner pin hole of the inner main connecting plate, a fourth inner screw is screwed in the fourth inner threaded hole of the fourth stepped column, the fourth outer small-diameter column of the fourth stepped column is in rotational cooperation with the fourth outer pin hole of the outer main connecting plate, and a fourth outer screw is screwed in the fourth outer threaded hole of the fourth stepped column.

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