CN201953812U

CN201953812U - Rotating position limiter

Info

Publication number: CN201953812U
Application number: CN2010206260442U
Authority: CN
Inventors: 张志明
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-24
Filing date: 2010-11-24
Publication date: 2011-08-31
Anticipated expiration: 2020-11-24

Abstract

The utility model discloses a rotating position limiter, which comprises a fixing frame and at least one main sleeve, wherein the main sleeve is provided with an axial through accommodating cavity, the cross section of the accommodating cavity is in a square shape, elastic rods are respectively arranged at each edge corner part of the accommodating cavity in the axial direction, a main shaft penetrates through the accommodating cavity, both ends of the main shaft are fixed on the fixing frame, the cross section of the main shaft is in a square shape, an included angle is formed between the diagonal line of the cross section of the accommodating cavity and the diagonal line of the cross section of the main shaft, and the elastic rods are clamped between the main shaft and the side wall of the side corner part of the accommodating cavity. The rotating position limiter has the advantages that the service life is prolonged, the use cost is reduced, and the safety of an instrument is improved.

Description

Rotary limiting device

Technical Field

The utility model relates to a rotate stop device, especially relate to one kind and be used for coming and going to rotate or swing spacing rotation stop device under various indoor outer environment, be suitable for indoor outer body-building apparatus to use very much.

Background

Along with the improvement of living standard of people, people are more and more concerned about self health problem, and more people utilize indoor outer body-building apparatus to take exercises. Therefore, various fitness equipment can be seen everywhere in an indoor gymnasium, an outdoor park and a community.

At present, various fitness equipment realizes the reciprocating rotation or swinging function through a bearing or a shaft sleeve. However, the above structure has some disadvantages:

1. the existing bearing or shaft sleeve is easy to wear in the using process, so that the bearing or shaft sleeve needs to be maintained and replaced regularly, the service life of the bearing or shaft sleeve is short, the service life is usually only 2-4 years, and the equipment needs to be replaced again when the service life is over, so that the use cost is greatly increased, and great economic loss is caused.

2. The existing bearing or shaft sleeve does not usually have a limiting function, and in order to ensure the safety in use, the existing bearing or shaft sleeve needs to be matched with other parts (such as a collision block and the like) to limit the rotation or swing angle of equipment, so that the abrasion of the parts is increased, and in use, the limiting part is easy to lose efficacy due to abrasion or collision, so that great potential safety hazards are brought.

Therefore, the above conventional structures have certain disadvantages, and further improvement is needed. How to prolong the service life, reduce the use cost and improve the safety of the equipment is one of the difficulties in the field of manufacturing the damping device.

In view of the defects of the existing structure, the designer actively improves and innovates the rotary limiting device based on years of design and field experience and professional knowledge of fitness equipment so as to realize the rotary limiting device which can prolong the service life, reduce the use cost and improve the safety of the equipment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can increase of service life, reduce use cost, can improve the rotation stop device of the security of equipment again.

In order to achieve the purpose, the utility model provides a rotation stop device, including mount and at least one main cover, the holding chamber that the axial link up is seted up to the main cover, the transversal square of personally submitting in this holding chamber each edge in holding chamber has installed the elastic rod respectively along the axial, a main shaft run through in the holding chamber, the both ends of main shaft are fixed in on the mount, the transversal square of personally submitting of main shaft, the diagonal of holding chamber cross section with the contained angle has between the diagonal of main shaft cross section, the elastic rod centre gripping is in the lateral wall of holding chamber edge with between the main shaft.

The rotation limiting device comprises a main sleeve, wherein two ends of the main sleeve are respectively sleeved with a sealing cover assembly, the sealing cover assembly comprises an annular bracket fixedly sleeved at the end part of the main sleeve, an annular ball support is arranged on the outer side of the bracket, a plurality of round holes are formed in the ball support along the circumferential direction, and balls are respectively arranged on the round holes; the main shaft penetrates through the bracket, the ball support and the end cover and is fixedly connected with the end cover, annular rails are respectively arranged on the surfaces, facing the ball support, of the bracket and the end cover, and the annular rails are connected with the balls.

The rotation limiting device is characterized in that two ends of the main shaft are respectively provided with an anti-theft cap, and the anti-theft caps are fixedly connected with the main shaft through screws.

The rotation limiting device as described above, wherein the outer surface of the main sleeve is cylindrical.

The rotation limiting device as described above, wherein the elastic rod is a rubber rod.

The rotation limiting device is characterized in that the outer wall of the main shaft is fixedly sleeved with a main shaft sleeve, and the outer wall of the main shaft sleeve is in contact with the elastic rod.

The rotation limiting device is characterized in that the fixing frame is a U-shaped fixing frame, two side walls of the U-shaped fixing frame are provided with corresponding through holes, and the spindle penetrates through the through holes.

The rotation limiting device is characterized in that the fixing frames are two superposed U-shaped fixing frames, the bottoms of the two U-shaped fixing frames are connected, and the main shafts on the two U-shaped fixing frames are arranged in a mutually perpendicular mode.

The rotation limiting device is characterized in that the fixing frame is composed of two connecting pieces arranged side by side, at least two through holes are correspondingly formed in each connecting piece, and the spindle penetrates through the through holes.

Compared with the prior art, the utility model has the following characteristics and advantages:

1. the utility model adopts the structure that the elastic rod is arranged between the main sleeve and the main shaft, the main sleeve and the main shaft can rotate relatively and are limited by the elastic rod, thereby replacing a bearing or shaft sleeve rotating device in the prior art, overcoming the defects that the bearing or shaft sleeve needs to be maintained or replaced regularly under various indoor and outdoor environments and the safety is poor, and having the advantages of wear resistance, long service life and high safety;

2. the utility model discloses because compare life longer with current bearing or axle sleeve rotating device, consequently saved manufacturing and use cost.

3. The utility model is suitable for a various indoor outer environment at 70 within ranges has wide advantage of application scope.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,

fig. 1A is a schematic structural view of a first embodiment of the rotation limiting device of the present invention;

fig. 1B is a schematic cross-sectional view of a first embodiment of the rotation limiting device of the present invention;

FIG. 1C is a schematic sectional view taken along line A-A of FIG. 1B;

fig. 1D is a schematic view of an exploded structure of a first embodiment of the rotation limiting device of the present invention;

fig. 2A is a schematic structural view of a second embodiment of the rotation limiting device of the present invention;

fig. 2B is a schematic sectional view of a second embodiment of the rotation limiting device of the present invention;

fig. 3A is a schematic structural view of a third embodiment of the rotation limiting device of the present invention;

fig. 3B is a schematic sectional view of a third embodiment of the rotation limiting device of the present invention;

FIG. 3C is a schematic view of the cross-sectional structure along the line B-B in FIG. 3B;

fig. 3D is a schematic structural view of the third connecting sheet of the third embodiment of the rotation limiting device of the present invention.

Description of reference numerals:

1-main sleeve; 11-a housing chamber; 2-a main shaft; 21-a screw; 22-a main shaft sleeve; 3-a fixing frame; 31-a through hole; 32-connecting pieces; 4-an elastic rod; 5-a bracket; 6-ball support; 61-round holes; 7-beads; 8-end cap; 81-mounting a through hole; 9-an annular track; 10-anti-theft cap.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.

The first embodiment is as follows:

please refer to fig. 1A to fig. 1D, which are schematic structural views of a first embodiment of the rotation limiting device of the present invention; a schematic cross-sectional structure; FIG. 1B is a schematic sectional view taken along line A-A; and the component decomposition structure schematic diagram.

As shown in the figure, the utility model provides a rotation stop device, including mount 3 and main cover 1, the holding chamber 11 that the axial link up is seted up to main cover 1, and the transversal square of personally submitting of this holding chamber 11 each edge of holding chamber 11 is installed respectively along the axial elastic rod 4, and elastic rod 4 can be along radial elasticity compression under the effect of external force. The main shaft 2 with the square cross section can be just inserted into an area space enclosed by four elastic rods 4 in the accommodating cavity 11 along the axial direction, and two ends of the main shaft 2 are fixed on the fixing frame 3. As shown in fig. 1C, an included angle β between a diagonal line of the cross section of the accommodating cavity 11 and a diagonal line of the cross section of the main shaft 2 is 45 degrees, that is, a phase difference of projections of the accommodating cavity 11 and the main shaft 2 on the cross section is 45 degrees. Therefore, the elastic rod 4 is clamped between the side wall at the corner of the accommodating cavity 11 and the outer wall of the main shaft 2, namely, the elastic rod 4 is abutted against the two side walls at the corner of the accommodating cavity 11 and the outer wall at the non-edge of the main shaft 2. When external force acts on the main sleeve 1 or the main shaft 2, the elastic rod 4 is extruded to contract along the radial direction, the main sleeve 1 and the main shaft 2 are driven by the external force to rotate relatively, and meanwhile, the elastic rod 4 has reaction force on the main sleeve 1 and the main shaft 2, so that a damping effect is achieved. When the spindle rotates for a certain angle, the main sleeve 1 and the spindle 2 stop rotating under the damping force of the elastic rod 4, and the elastic rod 4 plays a role in limiting the rotation angle of the main sleeve 1 and the spindle 2, so that the safety in use is improved. Because the utility model adopts the structure that the elastic rod 4 is arranged between the main sleeve 1 and the main shaft 2, the main sleeve 1 and the main shaft 2 can rotate relatively and can be limited by the elastic rod, thereby replacing a bearing or shaft sleeve rotating device in the prior art, overcoming the defects that the bearing or shaft sleeve needs to be maintained or replaced regularly and the safety is poor under various indoor and outdoor environments, and having the advantages of wear resistance, long service life and high safety; moreover, the utility model saves the manufacturing and using cost. However, the utility model discloses a cross sectional shape of main cover 1 and main shaft 2 is not limited to the square yet, also can adopt regular pentagon, regular hexagon or other regular polygon, as long as guarantee the diagonal of holding chamber 11 cross section with the diagonal of 2 cross sections of main shaft has certain contained angle and does not coincide to with the 4 centre grippings of elastic rod between holding chamber 11 and main shaft 2, main shaft 2 and main cover 1 can rotate relatively, and elastic rod 4 plays damped effect when rotating, and restriction main shaft 2 and main turned angle between 1 can.

Further, as shown in fig. 1B and 1D, two ends of the main sleeve 1 are respectively sleeved with a sealing cover assembly, the sealing cover assembly includes an annular bracket 5 fixedly sleeved on an end of the main sleeve 1, an annular ball support 6 is arranged on an outer side of the bracket 5, a plurality of circular holes 61 are circumferentially formed in the ball support 6, and balls 7 are respectively arranged on the circular holes 61; an end cover 8 is arranged on the outer side of the ball support 6, a mounting through hole 81 is formed in the center of the end cover 8, and the mounting through hole 81 is a square hole and is matched with the square spindle 2; the spindle 2 penetrates through the bracket 5, the ball support 6 and the end cover 8 and is connected with the end cover 8 in a matched mode through the mounting through hole 81, the surfaces, facing the ball support 6, of the bracket 5 and the end cover 8 are respectively provided with an annular rail 9, and the annular rails 9 are matched with the balls 7. When the main sleeve 1 and the main shaft 2 rotate relatively, the ball 7 slides along the annular track 9 of the bracket 5 and the end cover 8 along with the ball support, so that the abrasion between the components is reduced, and the service life is prolonged.

Further, as shown in fig. 1D, in the present embodiment, the outer surface of the main sleeve 1 is cylindrical, so as to be convenient for connecting other components of the fitness equipment. However, the present invention is not limited to this, and the outer surface of the main sleeve 1 may also be polygonal column or other suitable shapes according to actual needs.

Further, as shown in fig. 1A and 1B, two ends of the main shaft 2 are respectively covered with an anti-theft cap 10, and the anti-theft caps 10 are fixedly connected with the main shaft 2 through screws 21, so as to prevent theft and the main shaft 2 from being removed from the accommodating cavity 11. The specific structure of the pilfer cap 10 is well known in the art and will not be described in detail herein.

Further, in this embodiment, the elastic rod 4 is a rubber rod. However, the present invention is not limited to this, and other elastic material may be used, as long as the elastic rod is ensured to be elastically compressed when being pressed. The elastic performance of the elastic rod 4 can be selected according to different damping force requirements, as long as the effect of limiting the rotation angle is ensured when the main sleeve 1 and the main shaft 2 rotate relatively.

Further, as shown in fig. 1D, a spindle sleeve 22 is sleeved on the outer wall of the spindle 2, and the spindle sleeve 22 is adapted to the shape of the spindle 2; after installation, the inner wall of the spindle sleeve 22 is engaged with the outer wall of the spindle 2, so that the spindle sleeve 22 is integrated with the spindle 2, the outer wall of the spindle sleeve 22 is in contact with the elastic rod 4, and the spindle sleeve 22 can rotate relative to the main sleeve 1 along with the spindle 2, so that the installation is convenient, the abrasion of the spindle 2 is further reduced, and the service life is prolonged.

In this embodiment, the fixing frame 3 is a U-shaped fixing frame, through holes 31 are formed in two side walls of the U-shaped fixing frame, the through holes 31 are square holes, and the size of the through holes 31 is matched with the size of the cross section of the spindle, so that the spindle 2 can be inserted into the through holes 31.

Example two:

please refer to fig. 2A and 2B, which are a schematic structural diagram and a schematic cross-sectional structural diagram of a second embodiment of the present invention. In this embodiment, the same reference numerals are used for the same components as in the first embodiment.

As shown in the figure, in the present embodiment, the fixing frame 3 is two U-shaped fixing frames stacked on each other, the bottoms of the two U-shaped fixing frames are connected, and the main shafts 2 on the two U-shaped fixing frames are arranged perpendicular to each other. Thus, the utility model discloses rotate stop device and can rotate to a plurality of directions, play the effect of universal joint.

Other structures, working principles and beneficial effects of the embodiment are the same as those of the first embodiment, and are not described herein again.

Example three:

please refer to fig. 3A to 3D, which are schematic structural diagrams of a third embodiment of the present invention; a schematic cross-sectional structure; FIG. 3B is a schematic view of a cross-sectional structure taken along line B-B; the structure of the connecting piece is shown schematically. In this embodiment, the same reference numerals are used for the same components as in the first embodiment.

As shown in the figure, in this embodiment, the fixing frame 3 is composed of two connecting pieces 32 arranged side by side, two through holes 31 are correspondingly formed in each connecting piece 32, and the spindle 2 is inserted into the through holes 31, so that two groups of main sleeves and spindle structures are connected in series to play a role in increasing the rotation angle of the rotation limiting device. The utility model discloses a also can set up 3 groups, 4 groups or more group's main cover and main shaft structure side by side between two connection pieces 32 to the realization is established ties the effect of using with multiunit main cover and main shaft structure.

The utility model discloses when the assembly, adopt following step:

step 1: 4 elastic rods are arranged in the main sleeve;

step 2: installing a main shaft sleeve into the main sleeve, wherein the projection phase of the main shaft sleeve and the main sleeve on the cross section has an included angle of 45 degrees, and an elastic rod is clamped between the outer wall of the main shaft sleeve and the side wall at the corner of the main sleeve;

and step 3: placing the bracket on the step parts at the two ends of the main sleeve, assembling the balls on the ball support, placing the balls on the annular track of the bracket, and then buckling the end cover on the bracket, wherein the annular track of the end cover is matched with the balls for installation;

and 4, step 4: the assembled main sleeve is placed on the fixed frame and matched with the through hole on the fixed frame in an alignment way, and then the main shaft penetrates through the through hole and the main shaft sleeve in the main sleeve; then the screw is threaded on the anti-theft cap and screwed into the two ends of the main shaft, and finally the anti-theft cap is fastened tightly.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.

Claims

1. The utility model provides a rotate stop device, its characterized in that, rotate stop device includes mount and at least one main cover, the holding chamber that the axial link up is seted up to the main cover, and the transversal square of personally submitting in this holding chamber each edge in holding chamber has installed the elastic rod respectively along the axial, a main shaft run through in the holding chamber, the both ends of main shaft are fixed in on the mount, the transversal square of personally submitting of main shaft, the diagonal of holding chamber cross section with the contained angle has between the diagonal of main shaft cross section, the elastic rod centre gripping is in the lateral wall of holding chamber edge with between the main shaft.

2. The rotation limiting device according to claim 1, wherein two ends of the main sleeve are respectively sleeved with a sealing cover assembly, the sealing cover assembly comprises an annular bracket fixedly sleeved at the end of the main sleeve, an annular ball support is arranged at the outer side of the bracket, a plurality of circular holes are circumferentially formed in the ball support, and balls are respectively arranged on the circular holes; the main shaft penetrates through the bracket, the ball support and the end cover and is fixedly connected with the end cover, annular rails are respectively arranged on the surfaces, facing the ball support, of the bracket and the end cover, and the annular rails are connected with the balls.

3. The rotation limiting device according to claim 2, wherein anti-theft caps are respectively provided at both ends of the main shaft, and the anti-theft caps are fixedly connected to the main shaft by screws.

4. The rotation limiting device of claim 1, wherein the outer surface of said main sleeve is cylindrical.

5. The rotation limiting device of claim 1, wherein said resilient bar is a rubber bar.

6. The rotation limiting device of claim 1, wherein a spindle sleeve is fixedly sleeved on an outer wall of said spindle, and an outer wall of said spindle sleeve is in contact with said elastic rod.

7. The rotation limiting device according to any one of claims 1 to 6, wherein the fixing frame is a U-shaped fixing frame, two side walls of the U-shaped fixing frame are provided with corresponding through holes, and the spindle is inserted into the through holes.

8. The rotation limiting device according to any one of claims 1 to 6, wherein the fixing frame is two U-shaped fixing frames which are stacked, the bottoms of the two U-shaped fixing frames are connected, and the main shafts of the two U-shaped fixing frames are arranged perpendicular to each other.

9. The rotation limiting device according to any one of claims 1 to 6, wherein the fixing frame is composed of two connecting pieces arranged side by side, at least two through holes are correspondingly formed on each connecting piece, and the main shaft is inserted into the through holes.