CN216755302U - Rotary reset mechanism convenient to dismouting coil spring box and rowing machine - Google Patents

Abstract

The utility model relates to the technical field of fitness equipment, in particular to a rotary reset mechanism convenient for dismounting a coil spring box and a rowing machine, wherein the rotary reset mechanism convenient for dismounting the coil spring box comprises a rotating shaft, a driving pulley, a preassembled connecting piece and a coil spring box internally provided with a coil spring; the driving belt wheel is connected with the rotating shaft through a one-way bearing so as to drive the rotating shaft to rotate in one direction; one end of the preassembled connecting piece is detachably connected to the weaving belt wheel, so that the preassembled connecting piece and the weaving belt wheel can synchronously rotate; the other end of the spring passes through a through hole arranged at the bottom of the spring box and is arranged in the spring box, the inner end of the coil spring is fixed on the pre-installed connecting piece, and the outer end of the coil spring is fixed on the inner wall of the spring box; the coil spring box and the driving belt wheel rotate relatively, so that the coil spring is tightened to generate resilience force for the driving belt wheel to rotate and reset. The coil spring box is detachably arranged on the weaving belt wheel through the pre-installed connecting piece, and the coil spring is directly fixed with the pre-installed connecting piece, so that the coil spring box is convenient to disassemble and assemble and replace, and the operation efficiency is greatly improved.

Description

Rotary reset mechanism convenient to dismouting coil spring box and rowing machine

Technical Field

The utility model relates to the technical field of fitness equipment, in particular to a rotary reset mechanism convenient for dismounting a coil spring box and a rowing machine.

Background

The rowing machine is also called a rowing machine, is a fitness equipment simulating rowing exercise, and has good effect on strengthening muscles of legs, waist, upper limbs, breasts and back. The pull-back mechanism of rowing machine mainly has two kinds, one kind is through adopting the stretch cord to produce rotatory power that resets, but the stretch cord need detour the setting on equipment, makes the stretch cord have great length, reduces the stretch cord because of warping too big and ageing too fast, consequently structurally comparatively complicated, difficult installation, easy production wearing and tearing need frequently change again moreover.

The other is that a coil spring is used for generating a rotary reset force, for example, a patent document with publication number CN212038899U, published as 2020, 12, month and 01 discloses a scroll rotary reset mechanism, which comprises a rotating wheel and a main shaft, wherein the main shaft is arranged on the rotating wheel in a penetrating way; a turntable part and a springback part are axially distributed on the rotating wheel, and the turntable part is connected with the main shaft through a one-way bearing so that the rotating wheel drives the main shaft to rotate in a one-way manner; be equipped with volute spiral spring on the resilience portion, volute spiral spring's inner is fixed in on the resilience portion, the outer end is fixed in on the vortex dish, the runner with the vortex dish can rotate relatively to make volute spiral spring tighten up and produce the resilience force that is used for the runner rotation to reset.

However, in the above scheme, the coil spring needs to be separated from the hanging hole on the rebound part or the inner end of the coil spring needs to be installed on the hanging hole on the rebound part, so that the operation is troublesome.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that a coil spring in the rowing machine in the prior art is not easy to replace, the utility model provides a rotary reset mechanism which is convenient for disassembling and assembling a coil spring box, and the rotary reset mechanism comprises a rotating shaft, a driving pulley, a preassembled connecting piece and a coil spring box internally provided with a coil spring;

the driving belt wheel is connected with the rotating shaft through a one-way bearing so as to drive the rotating shaft to rotate in one direction;

one end of the preassembled connecting piece is detachably connected to the weaving belt wheel, so that the preassembled connecting piece and the weaving belt wheel can synchronously rotate; the other end of the spring passes through a through hole arranged at the bottom of the spring coiling box and is arranged in the spring coiling box, the inner end of the spring coiling is fixed on the pre-installed connecting piece, and the outer end of the spring coiling is fixed on the inner wall of the spring coiling box;

the coil spring box and the driving belt wheel rotate relatively, so that the coil spring is tightened to generate resilience force for the rotation reset of the driving belt wheel.

In one embodiment, the pre-assembled coupling member has a cylindrical shape.

In one embodiment, one end of the preassembled connecting piece close to the weaving belt wheel extends to form a base disc, and the base disc is fixedly attached to the axial end face of the weaving belt wheel through a bolt.

In one embodiment, the base disc and the axial end face of the pulley are correspondingly provided with a positioning bump and a positioning groove/hole which are mutually clamped and matched.

In one embodiment, the length direction of the screw holes correspondingly arranged on the base plate and the weaving belt wheel is radial.

In one embodiment, a bidirectional bearing is further embedded between the preassembly connecting piece and the through hole.

In one embodiment, the inner end and the outer end of the coil spring are respectively buckled with the preassembly connecting piece and the hanging hole on the coil spring box.

Compared with the prior art, the utility model also provides a rotary reset mechanism convenient for dismounting the coil spring box, the coil spring box is detachably arranged on the driving belt wheel through the pre-installed connecting piece, and the coil spring is directly fixed with the pre-installed connecting piece, so that the dismounting of the coil spring box and the replacement of the coil spring are convenient, and the operation efficiency is greatly improved.

In a second aspect, the utility model further provides a rowing machine, which adopts the rotary reset mechanism convenient for dismounting the coil spring box as described above, wherein one end of the rotating shaft is provided with a resistance mechanism for blocking the rotation of the weaving belt wheel; the weaving belt wheel is provided with a handheld mechanism for driving the weaving belt wheel to rotate.

In one embodiment, the resistance mechanism is a water resistor or a magnetic resistor.

In one embodiment, the hand-held mechanism comprises a drawstring wound on a strap wheel and a handle fixed at the free end of the drawstring.

Compared with the prior art, the utility model also provides the rowing machine, the rotating reset mechanism convenient for dismounting the coil spring box is adopted, and the mounting position of the coil spring box on the rowing machine is not limited by other parts, so that the dismounting operation space is relatively free, and the operation is more convenient.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts; in the following description, the drawings are illustrated in a schematic view, and the drawings are not intended to limit the present invention.

FIG. 1 is a schematic view of an embodiment of a rotary return mechanism for facilitating the disassembly and assembly of a coil spring box provided by the utility model;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is an exploded view of the coil box and coil spring;

FIG. 4 is a schematic view of an embodiment of the rotary return mechanism with a bi-directional bearing provided in accordance with the present invention;

FIG. 5 is a schematic view of an embodiment of the rowing machine provided by the present invention.

Reference numerals:

100-rotating-shaft 300 pre-installed connecting piece 500 bidirectional bearing

200 weaving wheel 310 base disk 610 draw tape

210 positioning lug 400 coil spring box 620 handle

220 positioning slot/hole 410 coil spring 700 support

230 screw hole 420 through hole 430 hanging hole

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; the technical features designed in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, and should not be construed as limiting the present invention; it will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

In a first aspect, referring to fig. 1 to 4, the present invention provides an embodiment of a rotary reset mechanism for facilitating the disassembly and assembly of a coil spring box, wherein the rotary reset mechanism comprises a rotating shaft 100, and a driving pulley 200, a pre-installed connecting member 300 and a coil spring box 400 with a coil spring 410 arranged therein, which are sequentially installed on the rotating shaft 100, and the coil spring box 400 is arranged at the outermost side of the rotary reset mechanism in the axial direction;

the driving belt wheel 200 is connected with the rotating shaft through a one-way bearing, and the rotating shaft 100 is driven to rotate in a one-way mode by rotating the driving belt wheel 200;

the shape of the pre-installed connector 300 is generally cylindrical, the pre-installed connector 300 in this embodiment is cylindrical, one end of the pre-installed connector passes through a circular through hole 420 formed in the bottom of the spring case 400 and is arranged inside the spring case 400, the inner end of the coil spring 410 is fixed on the pre-installed connector 300, and the outer end of the coil spring 410 is fixed on the inner wall of the spring case 400;

the other end of the pre-installed connector 300 is detachably mounted on the driving pulley 200 so that the pre-installed connector 300 and the driving pulley 200 can rotate synchronously; the preassembly connector 300 and the strap wheel 200 can be detachably connected by bolts, clamping, etc.

The working process of the rotary reset mechanism of the embodiment is to fix the coil spring box 400 on a certain object, and the driving of the external force is used to rotate the driving of.

It should be noted that the external force may be applied by manually or electrically driving the pulley to rotate in the forward direction, and in some embodiments, the pulley may be pulled to rotate in the forward direction by a draw tape wound around the pulley.

When the spring case 400 of the embodiment is installed, the pre-installed connector 300 and the spring case 400 can be pre-installed, and then the spring case 400 is directly fixed on the tape weaving wheel 200 through the pre-installed connector 300; similarly, during disassembly, the pre-assembled connector 300 and the pulley 200 can be disconnected to separate the coil spring case 400 from the pulley 200, thereby facilitating replacement of the coil spring 410.

The coil spring box 400 of the embodiment is detachably mounted on the driving pulley 200 through the pre-mounting connector 300, and the coil spring 410 is directly fixed with the pre-mounting connector 300, so that the coil spring box 400 is convenient to disassemble and assemble and the coil spring 410 is convenient to replace, and the operation efficiency is greatly improved.

In some embodiments, referring to fig. 2-4, the pre-assembly connector 300 is a cylinder to ensure the smooth rotation of the pre-assembly connector 300 in the through hole 420 of the coil spring case 400. Preferably, the interior of the pre-installed connector 300 is hollow, so as to further reduce the weight of the components and save the manufacturing cost.

In some embodiments, referring to fig. 3, the inner end of the coil spring 410 is fastened to the hanging hole 430 of the pre-assembly connector 300, and the outer end of the coil spring 410 is fastened to the hanging hole 430 on the inner wall of the coil spring case 400, so that the coil spring 400 can be easily assembled and disassembled and replaced by fastening.

In some embodiments, referring to fig. 2 and 3, a bidirectional bearing 500 is further embedded between the pre-installed connector 300 and the through hole 420, so that on one hand, the pre-installed connector 300 is conveniently limited and mounted on the coil spring case 400, on the other hand, the friction between the pre-installed connector 300 and the inner wall of the through hole 420 can be reduced, and the smoothness of the rotation of the pre-installed connector 300 in the through hole 420 of the coil spring case 400 is further improved.

In an embodiment, referring to fig. 2 and 4, one end of the preassembled connector 300 close to the pulley 200 extends to form a base plate 310, the base plate 310 of the embodiment is matched with the axial end surface of the pulley 200 in shape and size, when the preassembled connector 300 is fixed with the pulley 200, the base plate 310 is directly placed on the axial end surface of the pulley 200, and is attached to the axial end surface of the pulley 200 through bolts to be locked and fixed, so that the operation is simple and convenient.

It should be noted that, the shape of the base plate is not limited to match the size of the axial end face of the pulley, and as long as the base plate can be placed on the axial end face of the pulley to facilitate the next bolt locking operation, a person skilled in the art can design the base plate into different shapes according to actual requirements.

Preferably, referring to fig. 2, 3 and 4, the base plate 310 and the axial end surface of the pulley 200 are provided with the positioning protrusions 210 and the positioning grooves/holes 220 that are in snap fit with each other, and the base plate 310 and the screw holes 230 on the pulley 200 can be quickly and accurately positioned and aligned by the concave-convex fit of the positioning protrusions 210 and the positioning grooves/holes 220, so that the installation efficiency is improved.

Preferably, referring to fig. 2 and 4, the length direction of the screw holes 230 correspondingly arranged on the base plate 310 and the pulley 200 is radial, and since the pulley 200, the preassembled connector 300 and the coil spring case 400 of the rotary reset mechanism are all axially arranged along the rotating shaft 100, if the length direction of the screw holes 230 correspondingly arranged on the base plate 310 and the pulley 200 is also axial, the operating space is very limited, and if the radial arrangement is adopted, the operating space is relatively free, which is convenient for installation operation.

In a second aspect, referring to fig. 5, the utility model further provides an embodiment of a rowing machine, which employs the above-mentioned rotation resetting mechanism for facilitating the detachment and installation of the spring box, the spring box 400 is fixedly mounted on the supporting frame 700, and a resistance mechanism for resisting the rotation of the driving pulley 200 is mounted at one end of the rotating shaft 100 away from the driving pulley, and the resistance mechanism can be a water resistor or a magnetic resistor for increasing the resistance when the driving pulley 200 rotates in the forward direction; the hand-held mechanism for pulling the driving belt wheel 200 to rotate is arranged on the driving belt wheel 200, and specifically comprises a pulling belt 610 wound on the driving belt wheel 200 and a handle 620 fixed at the free end of the pulling belt 200;

the user drives the driving pulley 200 to rotate in the forward direction by pulling the handle 620, and simultaneously the coil spring 410 is tightened to generate resilience force; the weaving belt wheel 200 can not drive the rotating shaft 100 and the resistance mechanism on the rotating shaft 100 to rotate when rotating reversely; therefore, when the user removes the pulling force, the driving wheel 200 can be easily rotated to be reset by the resilience force, and simultaneously, the handle 620 is driven to be reset, so that the user can move in a reciprocating manner.

As can be seen from fig. 1 to 5, the spring coil box 400 is disposed at the outermost side of the rotary return mechanism through the pre-installed connecting member 300, compared with the prior art, the installation position of the spring coil box 400 on the rowing machine is not limited by other parts, so that the assembling and disassembling operation space is relatively free, and the operation is more convenient; for example, when the spring box 400 is installed on the rowing machine, the pre-assembled connecting piece 300 and the spring box 400 can be pre-assembled, then the spring box 400 is fixed with the weaving wheel 200 through the pre-assembled connecting piece 300, and the top of the spring box 400 is fixed with the support frame 700;

when the spring box 400 is disassembled on the rowing machine, the connection relation between the preassembled connecting piece 300 and the weaving wheel 200 can be directly released, and the spring box 400 can be taken out by the connection relation between the spring box 400 and the support frame 700; if only the coil spring 410 in the coil spring box 400 is replaced, the upper cover of the coil spring box 400 can be directly opened for replacement, the operation is simple and convenient, and other components of the rotary reset mechanism do not need to be detached.

In summary, the rotary reset mechanism for facilitating the disassembly and assembly of the coil spring box provided by the utility model has the advantages that the coil spring box is detachably arranged on the driving pulley through the pre-installed connecting piece, so that the coil spring box and the pre-installed connecting piece are pre-assembled into a whole, the connecting structure is simple, and the disassembly and assembly of the coil spring box and the replacement of the coil spring are facilitated.

In addition, it will be appreciated by those skilled in the art that, although there may be many problems with the prior art, each embodiment or aspect of the present invention may be improved only in one or several respects, without necessarily simultaneously solving all the technical problems listed in the prior art or in the background. It will be understood by those skilled in the art that nothing in a claim should be taken as a limitation on that claim.

Although terms such as spindle, tape wheel, pre-assembled connector, coil spring cassette, locating tab, base disk, coil spring, locating slot/hole, bi-directional bearing, through hole, screw hole, draw tape, hanging hole, handle, support bracket, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention; the terms "first," "second," and the like in the description and in the claims, and in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a rotatory canceling release mechanical system convenient to dismouting coil spring box which characterized in that: comprises a rotating shaft (100), a driving pulley (200), a preassembly connecting piece (300) and a coil spring box (400) internally provided with a coil spring (410);

the driving belt wheel (200) is connected with the rotating shaft (100) through a one-way bearing, so that the driving belt wheel (200) drives the rotating shaft (100) to rotate in one direction;

one end of the preassembly connecting piece (300) is detachably connected to the weaving wheel (200) so that the preassembly connecting piece (300) and the weaving wheel (200) can synchronously rotate; the other end of the spring passes through a through hole (420) arranged at the bottom of the spring coiling box (400) and is arranged in the spring coiling box (400), the inner end of the spring coiling (410) is fixed on the preassembly connecting piece (300), and the outer end of the spring coiling is fixed on the inner wall of the spring coiling box (400);

the coil spring box (400) and the driving belt wheel (200) rotate relatively, so that the coil spring (410) is tightened to generate a resilience force for the rotation reset of the driving belt wheel (200).

2. The rotary reset mechanism convenient for disassembling and assembling the coil spring box according to claim 1, characterized in that: the preassembly connecting piece (300) is cylindrical in shape.

3. The rotary reset mechanism convenient for disassembling and assembling the coil spring box according to claim 1 or 2, characterized in that: one end of the preassembly connecting piece (300) close to the driving belt wheel (200) extends to form a base disc (310), and the base disc (310) is fixedly attached to the axial end face of the driving belt wheel (200) through bolts.

4. The rotary reset mechanism convenient for disassembling and assembling the coil spring box according to claim 3, characterized in that: the axial end faces of the base disc (310) and the weaving belt wheel (200) are correspondingly provided with a positioning lug (210) and a positioning groove/hole (220) which are in clamping fit with each other.

5. The rotary reset mechanism convenient for disassembling and assembling the coil spring box according to claim 3, characterized in that: the length directions of the screw holes (230) which are correspondingly arranged on the base plate (310) and the weaving wheel (200) are radial.

6. The rotary reset mechanism convenient for disassembling and assembling the coil spring box according to claim 1, characterized in that: and a bidirectional bearing (500) is embedded between the preassembly connecting piece (300) and the through hole (420).

7. The rotary reset mechanism convenient for disassembling and assembling the coil spring box according to claim 1, characterized in that: the inner end and the outer end of the coil spring (410) are respectively buckled with the preassembly connector (300) and the hanging hole (430) on the coil spring box (400).

8. A rowing machine adopting the rotary reset mechanism convenient for dismounting the coil spring box as claimed in any one of claims 1 to 7, characterized in that: one end of the rotating shaft (100) is provided with a resistance mechanism for blocking the rotation of the weaving wheel (200); the weaving wheel (200) is provided with a hand-held mechanism for drawing the weaving wheel (200) to rotate.

9. The rowing machine of claim 8, wherein: the resistance mechanism is a water resistor or a magnetic resistor.

10. The rowing machine of claim 8, wherein: the handheld mechanism comprises a drawstring (610) wound on the weaving wheel (200) and a handle (620) fixed at the free end of the drawstring (610).

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