CN216812691U - Rowing machine flywheel fixed knot constructs - Google Patents

Abstract

The utility model discloses a fixing structure of an inertia wheel of a rowing machine, wherein a frustum body and a screwed part are arranged at the connecting end part of a straight mandrel, and an external thread part is formed on the outer surface of the frustum body; the screwing part is an internal thread hole arranged in the center of the frustum body; or an external thread column integrally connected with the tail end of the frustum body. The rowing machine inertia wheel is provided with a shaft installation through hole and a fixing piece installation through hole which are communicated; the shaft mounting through hole is a frustum through hole, and the frustum through hole is provided with an internal thread connected with the connecting end part. The mounting is the screw of the internal thread hole spiro union that cooperatees that is equipped with straight arbor, or the nut of the external screw thread post spiro union that cooperatees that is equipped with straight arbor, just the screw, nut and external screw thread post are arranged in completely in the mounting through-hole. This rowing machine flywheel fixed knot constructs processing is simple, and the machining precision is stable, and is with low costs, and the rowing machine flywheel is beated for a short time after the equipment, and the difficult shake problem that the rowing machine flywheel brought that appears of rowing machine is for the user to bring good motion and experience the sense.

Description

Rowing machine flywheel fixed knot constructs

Technical Field

The utility model belongs to the field of fitness equipment, and particularly relates to a fixing structure of an inertia wheel on a rowing machine.

Background

The rowing machine is also called a rowing machine, is a fitness equipment simulating rowing movement, provides resistance through the inertia wheel, and has a good exercise effect on strengthening muscles of legs, waist, upper limbs, chest and back. Referring now to fig. 6, a rowing machine flywheel of a commercial rowing machine has a fixed structure including a flywheel 10, a straight shaft 20, and a fixing member 30.

Referring to fig. 1.1 to 4.3, the straight spindle 20 is provided with a connecting end 21 connected to the inertia wheel 10, the connecting end 21 of the straight spindle 20 is designed as a cylinder, a square cylinder, a flat cylinder or a quincuncial-toothed cylinder, and an internal threaded hole 21A is formed in the connecting end 21 of the straight spindle 20.

Referring to fig. 5.1 and 5.2, the inertia wheel 10 may be formed by integrally processing the flywheel disc 11 and the connecting sleeve 12, or may be formed by welding two parts, i.e., the flywheel disc 11 and the connecting sleeve 12, which are separated from each other. The connecting sleeve 12 of the inertia wheel 10 is provided with an installation through hole 12A, and the connecting end part 21 of the installation through hole 12A corresponding to the straight spindle 20 is designed to be a cylindrical through hole, a square cylindrical through hole, a flat cylindrical through hole body or a quincunx tooth cylindrical through hole, so that the connecting end part 21 of the straight spindle 20 is tightly matched in the installation through hole 12A. The fixing member 30 is a screw that is engaged with the internal threaded hole of the straight spindle, and the screw is screwed into the internal threaded hole 21A and locked to the outer end surface of the connection sleeve 12 of the inertia wheel 10.

The cylinder, square column, the flat cylinder or the plum blossom tooth column of straight spindle axle 20 connects tip 21, with the cylinder through-hole of flywheel 10, square column through-hole, flat cylinder through-hole body or the cooperation structure of plum blossom tooth column through-hole, the requirement is extremely high to the tolerance requirement of alignment degree, depth of parallelism, circularity, axiality etc., the processing difficulty, the tolerance size is difficult to guarantee, the problem that often produces is that flywheel 10 beat is obvious, lead to rowing machine to produce unusual shake, power is unstable, bring bad experience to the user and feel.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides a fixing structure for an inertia wheel of a rowing machine. This structure processing is simple, and the machining precision is stable, and is with low costs, and it is little that the rowing machine flywheel beats after the equipment, and the difficult shake problem that the rowing machine flywheel brought that appears of rowing machine brings good motion experience for the user and feels.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a fixing structure of a rowing machine inertia wheel comprises the rowing machine inertia wheel, a straight mandrel and a fixing piece; wherein the content of the first and second substances,

the straight mandrel is provided with a connecting end part which is matched and connected with the inertia wheel of the rowing machine; the connecting end part is provided with a frustum body, and an external thread part is formed on the outer surface of the frustum body; the connecting end part is also provided with a screwing part which is an internal thread hole arranged at the center of the frustum body; or the screwing part is an external thread column integrally connected with the tail end of the frustum body;

the rowing machine inertia wheel comprises a connecting sleeve, wherein the connecting sleeve is provided with a shaft mounting through hole and a fixing piece mounting through hole which are communicated; the shaft is provided with a through hole, the frustum body corresponding to the straight mandrel is designed into a frustum through hole, and the frustum through hole is provided with an internal thread connected with the connecting end part;

the fixing piece is a screw which is matched and screwed with the internal thread hole arranged on the straight spindle, and the screw is completely arranged in the fixing piece mounting through hole; or the fixing piece is a nut matched and screwed with the external thread column arranged on the straight spindle, and the nut and the external thread column are completely arranged in the fixing piece mounting through hole.

According to the fixing structure for the inertia wheel of the rowing machine, the frustum body arranged on the straight mandrel is designed to be a circular frustum body, a square frustum body, a flat circular frustum body or a quincunx tooth frustum body; the cone frustum through hole arranged on the inertia wheel of the rowing machine corresponds to the cone frustum body of the circular cone frustum body, the square cone frustum body, the flat circular cone frustum body or the plum blossom-shaped toothed cone frustum body and is designed into the cone frustum through hole, the square cone frustum through hole, the flat circular cone frustum through hole or the plum blossom-shaped toothed cone frustum through hole.

The technical scheme provided by the utility model has the following beneficial effects:

firstly, the rowing machine inertia wheel fixing structure adopts the taper fit and threaded connection of the rowing machine inertia wheel and the straight spindle, and meanwhile, the fixing structure of the straight spindle and the rowing machine inertia wheel is further stabilized through the fixing piece with the inner screw thread on the straight spindle, so that the assembled rowing machine inertia wheel is fixed on the straight spindle and is not easy to jump, and the problem of abnormal shaking of the rowing machine is solved.

Secondly, the inertia wheel of the rowing machine is in matched taper fit and threaded connection with the straight spindle, so that the rowing machine is simple to machine, low in cost and stable in machining precision.

Thirdly, the fixing piece is completely arranged in the fixing piece mounting through hole of the connecting sleeve of the inertia wheel of the rowing machine, and the connecting sleeve is not exposed, so that the connecting sleeve can wrap the nut, and the inertia wheel of the rowing machine is more neat and attractive in appearance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1.1 is a front view of a prior art cylindrical right mandrel;

FIG. 1.2 is a schematic perspective view of a prior art cylindrical right mandrel;

FIG. 1.3 is a schematic side view of a prior art cylindrical right circular mandrel;

FIG. 2.1 is a front view of a prior art square cylinder straight mandrel;

FIG. 2.2 is a schematic perspective view of a prior art square cylindrical straight mandrel;

FIG. 2.3 is a schematic side view of a prior art square cylindrical straight mandrel;

FIG. 3.1 is a front view of a prior art straight mandrel with a flat cylinder;

FIG. 3.2 is a schematic perspective view of a prior art right circular cylindrical mandrel;

FIG. 3.3 is a side view schematic of a prior art straight cylindrical mandrel;

FIG. 4.1 is a front view of a prior art right-angle mandrel with a plum-blossom-shaped tooth cylinder;

fig. 4.2 is a schematic perspective view of a prior art right-angle mandrel with a double offset ring tooth cylinder;

FIG. 4.3 is a schematic side view of a prior art right-angle mandrel with a right circular truncated cone tooth;

FIG. 5.1 is a side view schematic of a prior art flywheel;

FIG. 5.2 is a cross-sectional structural schematic of a prior art flywheel;

FIG. 6 is a schematic cross-sectional view of an exploded structure of a prior art rowing machine flywheel securing structure;

FIG. 7 is a schematic sectional view of the combined structure of the flywheel fixing structure of the rowing machine in the prior art (D is the end-to-bounce direction of the flywheel; J is the radial bounce direction of the flywheel);

FIG. 8 is a schematic perspective view of a straight mandrel according to the present invention (embodiment one);

FIG. 9 is a schematic front view of the straight mandrel of the present invention (embodiment one);

FIG. 10 is a schematic side view of the straight mandrel of the present invention (embodiment one);

FIG. 11 is a sectional view of the first embodiment of the fixing structure of the flywheel of the rowing machine according to the present invention;

FIG. 12 is a first schematic sectional view (embodiment one) of the combination structure of the fixing structure of the flywheel of the rowing machine of the present invention;

FIG. 13 is a schematic sectional view of the second exploded structure of the fixing structure of the flywheel of the rowing machine in accordance with the second embodiment of the present invention;

FIG. 14 is a schematic sectional view of the assembly structure of the fixing structure of the flywheel of the rowing machine according to the second embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, the terms "first", "second" or "third", etc. are used for distinguishing between different items and not for describing a particular sequence.

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, all directional or positional relationships indicated by the terms "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," "counterclockwise," and the like are based on the directional or positional relationships indicated in the drawings and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so indicated must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the terms "fixedly connected" or "fixedly connected" should be interpreted broadly, that is, any connection between the two that does not have a relative rotational or translational relationship, that is, non-detachably fixed, integrally connected, and fixedly connected by other devices or elements.

In the claims, the specification and the drawings of the present invention, the terms "including", "having" and their variants, if used, are intended to be inclusive and not limiting.

Referring to fig. 8 to 14, the fixing structure of the inertia wheel of the rowing machine of the present invention is illustrated, including the inertia wheel 100 of the rowing machine, the straight shaft 200, and the fixing member 300. The straight mandrel 200 and the fixing member 300 of the present invention have two embodiments, respectively.

First embodiment, as shown in fig. 8 to 10, the straight axle 200 of the present invention is provided with a coupling end 210 for mating with the rowing machine flywheel 100.

In this embodiment, the connecting end portion 210 is provided with a frustum body which is narrowed to the tail end in a straight direction, specifically, the frustum body is designed as a circular frustum body, a flat circular frustum body or a quincunx tooth frustum body; and the outer thread part 211 is formed on the outer surface of the frustum body. The connecting end portion 210 is further provided with a screwing portion, and the screwing portion is an internal thread hole 212 arranged at the center of the frustum body.

Referring to fig. 11 and 12, the inertia wheel 100 of the rowing machine includes a flywheel plate 110 and a connecting sleeve 120 that are fixedly connected together. The connecting sleeve 120 of the rowing machine inertia wheel 100 is provided with an installation through hole 130, and the installation through hole 130 consists of a shaft installation through hole 131 and a fixing piece installation through hole 132 which are communicated with each other.

The shaft mounting through hole 131 is designed to be a frustum through hole corresponding to the frustum body of the straight spindle shaft 200. Specifically, the frustum through hole is designed to be a circular truncated cone through hole, a square truncated cone through hole, a flat circular truncated cone through hole or a plum blossom shaped tooth frustum through hole corresponding to the circular truncated cone, the flat circular truncated cone or the plum blossom shaped tooth frustum. And, the frustum through-hole is provided with an internal thread connected with the frustum body, so that the straight spindle shaft 200 is fixed in the shaft installation through-hole 131 by the frustum body in a screw coupling manner.

The fixing member mounting through hole 132 is a sink groove formed on the connecting sleeve 120 of the rowing machine flywheel 100. The inner diameter of the sink is larger than the minimum inner diameter of the shaft mounting through-hole 131 to form a fixture mounting surface 140 at the bottom surface of the fixture mounting through-hole 132.

The fixing member 300 is a screw which is screwed with the internal thread hole 212 of the straight spindle 200, and the screw is screwed in the internal thread hole 212 of the straight spindle 200 and is locked to the fixing member mounting surface 140 of the connecting sleeve 120 of the rowing machine flywheel 100 by a spacer 400. The rowing machine flywheel 100 and the straight mandrel 200 of the embodiment adopt matched taper fit and threaded connection, and meanwhile, the fixing structure of the straight mandrel 200 and the rowing machine flywheel 100 is further stabilized through the fixing piece 300 screwed on the straight mandrel 200, so that the assembled rowing machine flywheel 100 has small bounce, and the problem of abnormal shaking of the rowing machine is solved.

In this embodiment, the screw is completely disposed in the fixing member mounting through hole 132, and the connecting sleeve 120 is not exposed, so that the connecting sleeve 120 can wrap the screw, and the inertial wheel 100 of the rowing machine has a more neat and beautiful appearance.

Second embodiment, as shown in fig. 13 and 14, the straight axle 200 of the present invention is provided with a coupling end 210 for mating with the rowing machine flywheel 100.

In this embodiment, the connecting end portion 210 is provided with a frustum 210A having a straight end narrowed toward a tail end, and the frustum 210A forms an external thread portion 211 on an outer surface thereof. Specifically, the frustum 210A in this embodiment is a circular frustum, a square frustum, a flat circular frustum, or a quincunx-tooth frustum. The connection end portion 210 is further provided with a screw connection portion, and the screw connection portion is an external thread column 210B integrally connected with the tail end of the frustum body 210A.

In this embodiment, the rowing machine flywheel 100 includes a flywheel plate 110 and a connecting sleeve 120 which are fixedly connected as a whole. The connecting sleeve 120 of the rowing machine inertia wheel 100 is provided with an installation through hole 130, and the installation through hole 130 consists of a shaft installation through hole 131 and a fixing piece installation through hole 132 which are communicated with each other.

The shaft mounting through hole 131 is designed as a frustum through hole corresponding to the frustum body 210A of the straight spindle shaft 200. Specifically, the frustum through hole is designed to be a cone frustum through hole, a flat cone frustum through hole or a plum blossom tooth cone frustum through hole corresponding to the cone frustum 210A of the cone frustum, the flat cone frustum or the plum blossom tooth cone frustum. And, the shaft mounting through hole 131 is provided with an internal thread connected to the frustum body 210A, so that the straight spindle shaft 200 is screwed and fixed in the shaft mounting through hole 131 through the frustum body 210A.

The fixing member mounting through hole 132 is a sink groove formed on the connecting sleeve 120 of the rowing machine flywheel 100. The inner diameter of the sink is larger than the minimum inner diameter of the shaft mounting through-hole 131 to form a fixture mounting surface 140 at the bottom surface of the fixture mounting through-hole 132.

The fixing member 300 is a nut that is engaged with the externally threaded post 210B of the straight-center shaft 200 and is threadedly coupled to the externally threaded post 210B of the straight-center shaft 200, and is locked to the fixing member mounting surface 140 of the connecting sleeve 120 of the rowing machine flywheel 100. The rowing machine flywheel 100 and the straight mandrel 200 of the embodiment adopt matched taper fit and threaded connection, and meanwhile, the fixing structure of the straight mandrel 200 and the rowing machine flywheel 100 is further stabilized through the fixing piece 300 which is externally screwed on the straight mandrel 200, so that the assembled rowing machine flywheel 100 has small bounce, and the problem of abnormal shaking of the rowing machine is solved.

In this embodiment, the nut and the external threaded post 210B of the straight mandrel 200 are completely disposed in the fixing member mounting through hole 132, and the connecting sleeve 120 is not exposed, so that the connecting sleeve 120 can wrap the nut, and the appearance of the rowing machine flywheel 100 is more neat and beautiful.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (2)

1. A fixing structure of a rowing machine inertia wheel comprises a rowing machine inertia wheel (100), a straight spindle (200) and a fixing piece (300); it is characterized in that, among them,

the straight spindle (200) is provided with a connecting end part (210) which is matched and connected with the rowing machine inertia wheel (100); the connecting end part (210) is provided with a frustum body, and an external thread part (211) is formed on the outer surface of the frustum body; the connecting end part (210) is also provided with a screwing part which is an internal thread hole (212) arranged at the center of the frustum body; or the screwing part is an external threaded column (210B) integrally connected with the tail end of the frustum body (210A);

the rowing machine inertia wheel (100) comprises a connecting sleeve (120), wherein the connecting sleeve (120) is provided with a shaft mounting through hole (131) and a fixing piece mounting through hole (132) which are communicated with each other; wherein the content of the first and second substances,

the shaft mounting through hole (131) is designed to be a frustum through hole corresponding to the frustum body of the straight spindle (200), and the frustum through hole is provided with an internal thread connected with the connecting end part (210);

the fixing piece (300) is a screw which is matched and screwed with the internal threaded hole (212) formed in the straight mandrel (200), and the screw is completely arranged in the fixing piece mounting through hole (132); or the fixing piece (300) is a nut which is matched and screwed with the external thread column (210B) arranged on the straight mandrel (200), and the nut and the external thread column (210B) are completely arranged in the fixing piece mounting through hole (132).

2. The fixing structure of the inertia wheel of the rowing machine as claimed in claim 1, wherein the frustum body provided on the straight center shaft (200) is designed as a circular frustum body, a square frustum body, a flat circular frustum body or a quincunx tooth frustum body; the cone frustum through hole arranged on the inertial wheel (100) of the rowing machine is designed to be a cone frustum through hole, a flat cone frustum through hole or a plum blossom toothed cone frustum through hole corresponding to the cone frustum body of the cone frustum body, the flat cone frustum body or the plum blossom toothed cone frustum body.

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