CN221309461U - Sitting type stretching equipment for aerobics training - Google Patents

Abstract

A sitting type stretching device for aerobics training belongs to the technical field of aerobics training devices and comprises: a base; the number of the opening and closing frames is two, and the two opening and closing frames are respectively and rotationally symmetrically assembled on the right side of the base; the adjusting mechanism is assembled in the inner cavity of the base and can drive the two opening and closing frames to be close to or far away from each other; the limiting mechanism is arranged on the outer wall of the opening and closing frame; the adjusting mechanism includes: and (3) a screw. This aerobics training is with sitting posture stretching device can be according to the hip joint width of different users to the position of frame that opens and shuts is adjusted to can realize opening and shutting the fixed after the frame separates, can also carry out spacingly to user's both legs, it is crooked to avoid the user to pull the time both legs forward, in order to avoid influencing stretching effect, in addition can also assist the user health to pull forward and fix a position, guarantee that the user can be static in same tensile strength position for a period.

Description

Sitting type stretching equipment for aerobics training

Technical Field

The utility model belongs to the technical field of aerobics training equipment, and particularly relates to sitting type stretching equipment for aerobics training.

Background

The gymnastics are widely popular and popular among masses, and integrate gymnastics, dances, music, body building and entertainment into a whole, and a great deal of actions of upper and lower limbs, trunk, head and neck and foot stepping, especially hip actions in disco dances, jazz dances and thunderbolt dances are absorbed in the gymnastics, so that the vigor is increased for the gymnastics, meanwhile, accumulation of fat of buttocks and abdomen is reduced, and coordination and flexibility of actions are improved.

When the special aerobics exercises are trained, the conference is trained by the stretching equipment, so that the body flexibility of a targeted stretching user is trained, the special flexibility is a necessary condition for the aerobics athlete to exercise safely, improve the exercise capacity and complete the complete set of quality, and the special flexibility is required to have softness, strength, explosive force and gesture control capacity.

At present, common sitting type stretching equipment on the market can enable the legs of a user to be opened and closed at a certain angle and fixed, and then the body is bent and stretched forward to stretch, but the stretcher at least has the following defects:

1. The user sits at the cushion part and puts the two legs at the top end of the opening and closing frame to open and close, but the widths of the hip joints are different because the weights, the ages, the sexes and the like of different users are different, the rotating shaft positions of the opening and closing frame cannot be adjusted according to the users with different hip joints by the conventional equipment, and therefore the requirements of all users cannot be met;

2. The legs of the user cannot be fixed after being placed, and if the user bends the legs when the seat body is bent forwards and stretched, the user cannot effectively stretch, and the stretching training effect is affected.

Based on this, the present utility model has been made to solve the above-described problems.

Disclosure of utility model

Aiming at the problems that an opening and closing frame of a fixed rotating shaft cannot be matched with the requirements of users with different widths of hip joints, the legs cannot be fixed after being placed, and the legs are bent forwards and stretched easily, and the like in the prior art, the utility model provides sitting type stretching equipment for aerobics training. The specific technical scheme is as follows: a sitting stretching apparatus for aerobics training comprising:

A base;

The number of the opening and closing frames is two, and the two opening and closing frames are respectively and rotationally symmetrically assembled on the right side of the base;

the adjusting mechanism is assembled in the inner cavity of the base and can drive the two opening and closing frames to be close to or far away from each other;

The limiting mechanism is arranged on the outer wall of the opening and closing frame;

The adjusting mechanism includes:

One end of the screw rod is rotatably arranged on the inner wall of the base;

The number of the movable seats is two, the two movable seats are respectively and symmetrically connected with the outer wall of the screw in a screwed mode, and the outer walls of the two opening and closing frames are respectively and rotatably arranged on the outer walls of the movable seats;

The limit mechanism comprises:

The fixing cylinder is a rectangular hollow metal tube with an opening at the top end;

And the limiting arm can move up and down along the outer wall of the fixed cylinder.

In the above technical scheme, the adjustment mechanism further includes:

the first conical gear is arranged at the other end of the screw rod;

One end of the rotating rod is rotatably arranged on the inner wall of the base, and the other end of the rotating rod extends out of the top end of the outer wall of the base;

The second bevel gear is in interference fit with the outer wall of the rotating rod, and the second bevel gear is meshed with the first bevel gear.

In the technical scheme, the threads on the front side and the rear side of the outer wall of the screw are positive and negative threads.

In the above technical scheme, the stop gear still includes:

The sliding cylinder can be arranged in the inner cavity of the fixed cylinder in a vertically movable mode, the top end of the sliding cylinder extends out of the top end of the fixed cylinder, and the limiting arm is arranged at the top end of the sliding cylinder;

The number of the second jacks is a plurality, and the plurality of the second jacks are respectively arranged on the outer wall of the sliding cylinder at equal intervals along the up-down direction;

The second inserted link movably penetrates through the outer wall of the fixed cylinder, and one end of the second inserted link is embedded in the inner cavity of the second jack;

The third spring is sleeved on the outer wall of the other end of the second inserted link, and two ends of the third spring are fixedly arranged on the outer wall of the second inserted link and the outer wall of the fixed cylinder respectively.

In the technical scheme, the limiting arm is arc-shaped and corresponds to the top end of the opening and closing frame, and the outer wall of the limiting arm is sleeved with the sponge cushion.

In the above technical scheme, the connecting seat is installed to the bottom of removing the seat, the outer wall of connecting seat extends the right side of base and installs locking part, locking part includes:

the slideway is arranged on the outer wall of the connecting seat;

The number of the first jacks is a plurality, and the first jacks are respectively equidistantly arranged at the bottom end of the inner cavity of the slideway;

The first inserting rod movably penetrates through the outer wall of the opening and closing frame, and the bottom end of the first inserting rod is embedded in the inner cavity of the first jack;

The first spring is sleeved on the outer wall of the first inserted link, and two ends of the first spring are fixedly connected to the top end of the outer wall of the first inserted link and the outer wall of the opening and closing frame respectively.

In the technical scheme, the slide way is arranged in an arc shape, and the circle center of the slide way and the rotating connection part of the opening and closing frame are coaxially arranged.

In the above technical scheme, right side mid-mounting of base has the support, the top of support sets up tooth piece strip, but the top outside of support side by side is equipped with slide mechanism, slide mechanism includes:

A housing;

The sliding groove is formed in the bottom end of the outer wall of the shell, and the tooth block strips are embedded in the inner cavity of the sliding groove;

The gear is rotatably arranged in the inner cavity of the shell;

The number of the racks is two, the racks are respectively and symmetrically arranged in the inner cavity of the shell, and the two racks are respectively meshed with the gear;

The two limiting rods are symmetrically arranged in the inner cavity of the shell respectively, and the two racks are sleeved on the outer walls of the two limiting rods in a sliding manner respectively;

the second spring is sleeved on the outer wall of the limiting rod, and two ends of the second spring are fixedly connected to the outer wall of the rack and the inner wall of the shell respectively;

The number of the through grooves is two, and the through grooves are symmetrically arranged at the bottom end of the shell respectively;

The top end of the tooth is connected with the outer wall of the sliding groove, and the bottom end of the tooth extends out of the bottom end of the inner cavity of the through groove;

the number of the push rods is two, and the push rods are respectively arranged on the front side and the rear side of the outer wall of the shell;

The knob is arranged at the top end of the shell and is connected with the outer wall of the gear.

In the above technical scheme, the shape of the outer wall of the bottom end of the tooth is wedge-shaped, and corresponds to the outer wall of the tooth block strip.

In the above technical scheme, this sitting posture stretching device still includes:

the cushion is arranged at the top end of the base;

The number of the leg placing pads is two, and the leg placing pads are respectively arranged at the top ends of the two opening and closing frames and correspond to the positions of the limiting mechanisms;

The number of the universal wheels is two, and the universal wheels are respectively arranged at the bottom ends of the two opening and closing frames.

Compared with the prior art, the sitting type stretching equipment for aerobics exercises has the beneficial effects that:

1. aiming at the problems that the rotating shaft position of the opening and closing frame is fixed and the rotating shaft position of the opening and closing frame cannot be adjusted according to users with different hip joints, and therefore, the requirements of all users cannot be met, the screw is rotated by rotating the rotating rod and utilizing the cooperation of the second bevel gear and the first bevel gear, so that the positions of the two opening and closing frames are adjusted;

2. Aiming at the problem that the legs of a user cannot be fixed after being placed, if the legs of the user bend when the seat body is bent and stretched, the effective stretching cannot be achieved;

3. The sliding rail is used for limiting the first inserted link to assist the opening and closing frame to stably slide, the first inserted link is inserted into the inner cavity of the first jack to fix the opening and closing frame, and meanwhile, the sliding rail can move along with the movement of the connecting seat at the same time, so that the sliding rail is always matched with the rotating path of the opening and closing frame, and the stable rotation and fixation of the opening and closing frame are ensured;

4. According to the application, the push rod is pushed to enable the shell to slide rightwards along the outer wall of the tooth block strip, the inclined surface of the outer wall of the tooth is matched with the inclined surface of the tooth block strip in the process to enable the tooth to move outwards and compress the second spring, when the pushing of the shell is stopped, the tooth is clamped with the tooth block strip by utilizing the elastic force of the second spring, the shell is prevented from sliding leftwards, and the gear is rotated to enable the rack to leave the outer wall of the tooth block strip, so that the shell can slide leftwards;

In summary, the application can adjust the position of the opening and closing frame according to the hip joint width of different users, can realize the fixation after the opening and closing frame is separated, can also limit the legs of the users, avoid bending the legs when the users stretch forwards, so as not to influence the stretching effect, and can also assist the bodies of the users to stretch forwards and position, thereby ensuring that the users can rest for a period of time at the same stretching strength position.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view showing the open/close frame in the open/close state according to the present utility model;

FIG. 3 is a schematic view of a limiting mechanism according to the present utility model;

FIG. 4 is a schematic structural view of an adjusting mechanism according to the present utility model;

FIG. 5 is a top view of the slide mechanism of the present utility model;

Fig. 6 is a schematic structural view of the sliding mechanism of the present utility model.

In fig. 1 to 6, 1, a base, 2, an opening and closing frame, 3, an adjusting mechanism, 31, a screw, 32, a moving seat, 33, a first conical gear, 34, a rotating rod, 35, a second conical gear, 4, a connecting seat, 5, a slideway, 6, a first jack, 7, a first inserting rod, 8, a first spring, 9, a bracket, 10, a tooth bar, 11, a sliding mechanism, 1101, a shell, 1102, a gear, 1103, a rack, 1104, a limit rod, 1105, a second spring, 1106, a through groove, 1107, teeth, 1108, a sliding groove, 1109, a push rod, 1110, a knob, 12, a limit mechanism, 1201, a fixed cylinder, 1202, a sliding cylinder 1203, a second jack, 1204, a second inserting rod, 1205, a third spring, 1206, a limit arm, 13, a cushion, 14, a leg pad, 15, and a universal wheel.

Detailed Description

The utility model will be further described with reference to specific embodiments and figures 1-6, but the utility model is not limited to these embodiments.

A sitting stretching apparatus for aerobics training comprising: the base 1, the frame 2 that opens and shuts, guiding mechanism 3 and stop gear 12, the quantity of frame 2 that opens and shuts is two, and two frames 2 that open and shut respectively rotatable symmetry assemble in the right side of base 1, and the user places the both legs on the top of two frames 2 that open and shut, rotates frame 2 to suitable position, can transversely stretch leg muscle training, guiding mechanism 3 assembles in the inner chamber of base 1, can drive two frames 2 that open and shut and be close to each other or keep away from, and stop gear 12 installs in the outer wall of frame 2 that opens and shuts.

The following description is made with respect to the adjustment mechanism 3, and referring to fig. 1, 2 and 4, the adjustment mechanism 3 includes: the screw rod 31, remove seat 32, first conical gear 33, bull stick 34 and second conical gear 35, the rotatable installation in the inner wall of base 1 of one end of screw rod 31, wherein, both sides screw thread is positive and negative around the outer wall of screw rod 31, the quantity of removing seat 32 is two, and two remove seat 32 symmetry spiro union respectively in the outer wall of screw rod 31, when screw rod 31 rotates, two remove seat 32 can be synchronous mutual being close to or keep away from each other, thereby adjust the interval of two, the outer wall of two opening and shutting frames 2 is rotatable install in the outer wall of removing seat 32 respectively, first conical gear 33 installs in the other end of screw rod 31, the rotatable installation in the inner wall of base 1 of one end of bull stick 34, and the other end of bull stick 34 extends out the outer wall top of base 1, the hand wheel is installed to the one end that the bull stick 34 extends the top of base 1, the user rotates of being convenient for, second conical gear 35 interference fit is in the outer wall of bull stick 34, and second conical gear 35 meshes with first conical gear 33 each other, when bull stick 34 drives second conical gear 35 and rotates, can first conical gear 33, and then make screw rod 31 rotate together.

After the opening and closing frame 2 is opened and closed and rotated to a certain angle, the opening and closing frame needs to be positioned, so that a user can stably put the legs on the opening and closing frame, and the following scheme is provided: the connecting seat 4 is installed to the bottom of removing seat 32, and the outer wall of connecting seat 4 extends the right side of base 1 and installs locking part, and locking part includes: slide 5, first jack 6, first inserted bar 7 and first spring 8, slide 5 installs in the outer wall of connecting seat 4, guarantee that slide 5 and removal seat 32 can remove simultaneously, then guarantee that slide 5 and the junction of opening and shutting frame 2 pivot relative position is invariable all the time, the quantity of first jack 6 is a plurality of, and the inner chamber bottom in slide 5 is offered to the equidistance respectively to a plurality of first jack 6, the mobilizable outer wall that runs through of first jack 2 of first inserted bar 7, and the bottom of first inserted bar 7 is embedded in the inner chamber of first jack 6, wherein, slide 5 is circular-arc setting, and the centre of a circle of slide 5 and the rotation junction coaxial setting of opening and shutting frame 2, first inserted bar 7 slides in the inner chamber of slide 5 all the time, first spring 8 cup joints in the outer wall of first inserted bar 7, and the both ends of first spring 8 are fixed connection in the outer wall top of first inserted bar 7 and the outer wall of opening and shutting frame 2 respectively, upwards stimulate first inserted bar 7 compression first spring 8 and make first inserted bar 7 leave the inner chamber of first jack 6, rotatable frame 2 the jack that can be used again after the first spring 8 to make the first jack 2 to insert the first jack again, the contrast can be compared.

Referring now to fig. 3, and with respect to the spacing mechanism 12, the spacing mechanism 12 includes: the fixed cylinder 1201, the sliding cylinder 1202, the second jack 1203, the second inserting rod 1204, the third spring 1205 and the limiting arm 1206, the fixed cylinder 1201 is a rectangular hollow metal tube with an opening at the top end, the sliding cylinder 1202 can be installed in the inner cavity of the fixed cylinder 1201 in a vertically movable way, the top end of the sliding cylinder 1202 extends out of the top end of the fixed cylinder 1201, the limiting arm 1206 is installed at the top end of the sliding cylinder 1202, the sliding cylinder 1202 can move up and down along the fixed cylinder 1201 synchronously by moving the limiting arm 1206 up and down, the number of the second jacks 1203 is a plurality, the second jacks 1203 are respectively arranged on the outer wall of the sliding cylinder 1202 at equal intervals along the up and down direction, the second inserting rod 1204 can movably penetrate the outer wall of the fixed cylinder 1201, one end of the second inserting rod 1204 is embedded in the inner cavity of the second jack 1203, the third spring 1205 is sleeved on the outer wall of the other end of the second inserting rod 1204, and both ends of the third spring 1205 are respectively fixedly installed on the outer wall of the second inserting rod 1204 and the outer wall of the fixed cylinder 1201, and when the second inserting rod 1204 is pulled outwards to leave the inner cavity of the second inserting hole 1203, the third spring 1205 can be compressed, at the moment, the sliding cylinder 1202 can be moved up and down, the second inserting rod 1204 can be reinserted into the inner cavity of the second inserting hole 1203 by using the elasticity of the third spring 1205, so that the sliding cylinder 1202 is repositioned, wherein the shape of the limiting arm 1206 is arc-shaped and corresponds to the top end position of the opening and closing frame 2, the outer wall of the limiting arm 1206 is sleeved with a sponge cushion, the arc-shaped outer wall of the sponge cushion can be matched with the legs of a user, and meanwhile, the sponge cushion can avoid the injury of the legs.

When the user uses the device, he needs to bend forward to perform stretching training after fixing his legs, and for this purpose, the following schemes are proposed, referring to fig. 1, 2, 5 and 6: the right side mid-mounting of base 1 has support 9, and the top of support 9 sets up tooth piece strip 10, and tooth piece strip 10 comprises the wedge tooth piece that a plurality of equidistance set up, and its right side is the plane left side and is the inclined plane, but the top outside left and right sliding of support 9 is equipped with slide mechanism 11, and slide mechanism 11 includes: the gear 1102 is rotatably arranged in the cavity of the shell 1101, the gear 1103 is two, the two racks 1103 are symmetrically arranged in the cavity of the shell 1101 respectively, the two racks 1103 are meshed with the gear 1102 respectively, the rotating gear 1102 can enable the racks 1103 to move, the two racks 1103 are opposite in moving direction, the number of the limiting rods 1104 are symmetrically arranged in the cavity of the shell 1101 respectively, the two racks 1103 are slidably sleeved on the outer walls of the two limiting rods 1104 respectively, the stable movement of the racks 1103 is ensured by utilizing the limit of the limiting rods 1104, the two ends of the second spring 1105 are respectively and fixedly connected to the outer wall of the rack 1103 and the inner wall of the housing 1101, when the rack 1103 moves, the second spring 1105 can be forced to stretch or compress, after the external force is removed, the rack 1103 can be reset by utilizing the elasticity or the tensile force of the second spring 1105, the number of through grooves 1106 is two, the two through grooves are respectively and symmetrically arranged at the bottom end of the housing 1101, the top ends of the teeth 1107 are connected with the outer wall of the sliding groove 1108, the bottom ends of the teeth 1107 extend out of the inner cavity bottom ends of the through grooves 1106, the teeth 1107 slide along the through grooves 1106 to be limited, the outer wall of the bottom ends of the teeth 1107 are kept stable, the shape of the outer wall of the bottom ends of the teeth 1107 is in a wedge-shaped arrangement and corresponds to the outer wall of the tooth block 10, when the right inclined surface of the teeth 1107 is matched with the left inclined surface of the tooth block 10 to drive the teeth 1107 to move, when the left straight surface of the teeth 1107 is matched with the plane of the tooth block 10 to be limited, the number of the push rods 1109 are two, the push rods 1109 are respectively arranged at the front side and the back side of the outer wall of the housing 1101, a knob 1110 is mounted on the top end of the housing 1101 and is connected to the outer wall of the gear 1102, and rotation of the knob 1110 causes the gear 1102 to rotate together.

In addition, the sitting stretching apparatus further comprises: the cushion 13, put leg pad 14 and universal wheel 15, the cushion 13 is installed in the top of base 1, and the quantity of putting leg pad 14 is two, installs respectively in the top of two frame 2 that open and shut, and corresponds with stop gear 12's position, and cushion 13 and put leg pad 14 are the elastic cushion, can improve user comfort, and the quantity of universal wheel 15 is two, installs respectively in the bottom of two frame 2 that open and shut, is favorable to the support and the rotation of frame 2 that open and shut.

The working principle of the sitting type stretching device for aerobics training of the embodiment is as follows:

The user sits at the position of the cushion 13, the rotary rod 34 drives the first conical gear 33 and the screw 31 to rotate together by utilizing the rotation of the second conical gear 35, at the moment, the two movable seats 32 can drive the two opening and closing frames 2 to be respectively close to or far away from each other, meanwhile, the two slide ways 5 can synchronously move together under the drive of the connecting seats 4, when the positions of the two opening and closing frames 2 are proper, the rotary rod 34 is stopped, the first inserting rod 7 is lifted upwards to leave the inner cavity of the first inserting hole 6, the opening and closing frames 2 are simultaneously rotated to a proper angle, at the moment, the elastic force of the first spring 8 is utilized to enable the first inserting rod 7 to be inserted into the inner cavity of the first inserting hole 6 at a proper position, and the limiting of the opening and closing frames 2 is completed;

Then the user puts the two legs on the top end of the leg placing pad 14, pulls the second inserted link 1204 outwards to leave the inner cavity of the second jack 1203, pushes the sliding cylinder 1202 downwards, and inserts the second inserted link 1204 into the second jack 1203 at a proper position to fix the limiting arm 1206 when the limiting arm 1206 is attached to the legs;

The user pushes the push rod 1109 forwards to enable the shell 1101 to slide rightwards along the tooth block strip 10, at the moment, the inclined surface of the outer wall of the tooth 1107 is matched with the inclined surface of the outer wall of the tooth block strip 10, the tooth 1107 moves outwards and compresses the second spring 1105, the sliding of the shell 1101 is not blocked in the process, when the position is proper, the shell 1101 is blocked from moving leftwards by utilizing the matching and clamping of the straight surface of the outer wall of the tooth 1107 and the straight surface of the outer wall of the tooth block strip 10, the user can rest at the current position for a certain period of time to stretch after holding the push rod 1109, the stretching is finished, the gear 1102 is rotated by rotating the knob 1110, so that the rack 1103 drives the two tooth 1107 to move outwards respectively, the shell 1101 is separated from a limited state, and can move leftwards to reset;

when the device is used, the positions of the two opening and closing frames 2 can be adjusted according to the difference of users, the legs of the users can be limited, the bending of the legs when the user body is bent and stretched is avoided, the stretching effect is prevented from being influenced, the rest period of time when the user body is bent and stretched can be ensured, and the good training effect is ensured.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A sitting stretching apparatus for aerobics training, comprising:

A base (1);

the number of the opening and closing frames (2) is two, and the two opening and closing frames (2) are respectively and rotatably symmetrically assembled on the right side of the base (1);

The adjusting mechanism (3) is assembled in the inner cavity of the base (1) and can drive the two opening and closing frames (2) to be close to or far away from each other;

The limiting mechanism (12) is arranged on the outer wall of the opening and closing frame (2);

The adjustment mechanism (3) includes:

The screw rod (31), one end of the screw rod (31) is rotatably arranged on the inner wall of the base (1);

The number of the movable seats (32) is two, the two movable seats (32) are respectively and symmetrically connected with the outer wall of the screw rod (31) in a screwed mode, and the outer walls of the two opening and closing frames (2) are respectively and rotatably arranged on the outer walls of the movable seats (32);

the limit mechanism (12) includes:

a fixed cylinder (1201), wherein the fixed cylinder (1201) is a rectangular hollow metal tube with an open top end;

And a limiting arm (1206), wherein the limiting arm (1206) can move up and down along the outer wall of the fixed cylinder (1201).

2. A sitting stretching apparatus for aerobics training according to claim 1, wherein: the adjustment mechanism (3) further comprises:

A first bevel gear (33), the first bevel gear (33) being mounted to the other end of the screw (31);

One end of the rotating rod (34) is rotatably arranged on the inner wall of the base (1), and the other end of the rotating rod (34) extends out of the top end of the outer wall of the base (1);

and the second conical gear (35) is in interference fit with the outer wall of the rotating rod (34), and the second conical gear (35) is meshed with the first conical gear (33).

3. A sitting-type stretching apparatus for aerobics training according to claim 2, wherein: the screw threads on the front side and the rear side of the outer wall of the screw rod (31) are positive and negative screw threads.

4. A sitting-type stretching apparatus for aerobics training according to claim 2, wherein: the limiting mechanism (12) further comprises:

The sliding cylinder (1202) can be arranged in the inner cavity of the fixed cylinder (1201) in a vertically movable mode, the top end of the sliding cylinder (1202) extends out of the top end of the fixed cylinder (1201), and the limiting arm (1206) is arranged at the top end of the sliding cylinder (1202);

the number of the second jacks (1203) is a plurality, and the second jacks (1203) are respectively arranged on the outer wall of the sliding cylinder (1202) at equal intervals along the up-down direction;

The second inserted link (1204), the said second inserted link (1204) is movable to run through the outer wall of the fixed cylinder (1201), and one end of the second inserted link (1204) is embedded in the inner chamber of the said second jack (1203);

And the third spring (1205) is sleeved on the outer wall of the other end of the second inserted rod (1204), and two ends of the third spring (1205) are fixedly arranged on the outer wall of the second inserted rod (1204) and the outer wall of the fixed cylinder (1201) respectively.

5. A sitting-type stretching apparatus for aerobics training as claimed in claim 4, wherein: the limiting arm (1206) is arc-shaped and corresponds to the top end position of the opening and closing frame (2), and a sponge cushion is sleeved on the outer wall of the limiting arm (1206).

6. A sitting-type stretching apparatus for aerobics training according to any one of claims 1-5, wherein: the bottom of remove seat (32) is installed connecting seat (4), the outer wall of connecting seat (4) extends the right side of base (1) and installs locking part, locking part includes:

the slide way (5) is arranged on the outer wall of the connecting seat (4);

the first jacks (6) are arranged in number, and the first jacks (6) are respectively arranged at the bottom end of the inner cavity of the slideway (5) at equal intervals;

The first inserting rod (7) movably penetrates through the outer wall of the opening and closing frame (2), and the bottom end of the first inserting rod (7) is embedded in the inner cavity of the first jack (6);

The first spring (8), first spring (8) cup joints in the outer wall of first inserted bar (7), and the both ends of first spring (8) fixed connection respectively in the outer wall top of first inserted bar (7) and the outer wall of frame (2) that opens and shuts.

7. The sitting stretching apparatus for aerobics training as claimed in claim 6, wherein: the slide way (5) is arranged in an arc shape, and the circle center of the slide way (5) and the rotating connection part of the opening and closing frame (2) are coaxially arranged.

8. A sitting-type stretching apparatus for aerobics training according to any one of claims 1-5, wherein: the right side mid-mounting of base (1) has support (9), the top of support (9) sets up tooth piece strip (10), but the top outside of support (9) left and right sliding is equipped with slide mechanism (11), slide mechanism (11) include:

A housing (1101);

The sliding groove (1108), the sliding groove (1108) is arranged at the bottom end of the outer wall of the shell (1101), and the tooth block strips (10) are embedded in the inner cavity of the sliding groove (1108);

A gear (1102), the gear (1102) rotatably mounted to an interior cavity of the housing (1101);

The number of the racks (1103) is two, the racks (1103) are respectively and symmetrically arranged in the inner cavity of the shell (1101), and the two racks (1103) are respectively meshed with the gear (1102);

The limiting rods (1104) are symmetrically arranged in the inner cavity of the shell (1101) respectively, and the two racks (1103) are sleeved on the outer walls of the two limiting rods (1104) in a sliding way respectively;

The second spring (1105), the said second spring (1105) is cup jointed to the outer wall of the stop lever (1104), and both ends of the second spring (1105) are fixedly connected to the outer wall of the said rack (1103) and inner wall of the outer casing (1101) separately;

the number of the through grooves (1106) is two, and the through grooves (1106) are symmetrically arranged at the bottom end of the shell (1101) respectively;

The top end of the tooth (1107) is connected with the outer wall of the sliding groove (1108), and the bottom end of the tooth (1107) extends out of the bottom end of the inner cavity of the through groove (1106);

the number of the push rods (1109) is two, and the push rods (1109) are respectively arranged on the front side and the rear side of the outer wall of the shell (1101);

And the knob (1110) is arranged at the top end of the shell (1101) and is connected with the outer wall of the gear (1102).

9. A sitting stretching apparatus for aerobics training as claimed in claim 8, wherein: the outer wall of the bottom end of each tooth (1107) is wedge-shaped, and corresponds to the outer wall of each tooth block strip (10).

10. A sitting-type stretching apparatus for aerobics training according to claim 9, wherein: the sitting stretching apparatus further comprises:

the cushion (13) is arranged at the top end of the base (1);

the two leg placing pads (14) are respectively arranged at the top ends of the two opening and closing frames (2) and correspond to the positions of the limiting mechanisms (12);

the number of the universal wheels (15) is two, and the universal wheels (15) are respectively arranged at the bottom ends of the two opening and closing frames (2).