CN220535322U - Hollow castor - Google Patents

Abstract

The utility model discloses a hollow caster, which comprises a foot rod piece, rotating pieces and a rim piece, wherein the foot rod piece is provided with a first through hole, the rotating pieces are rotationally connected to the foot rod piece, at least two rotating pieces are arranged on the axis of the first through hole of each ring, the rim piece is of a hollow structure, a first separation limiting groove is formed in the inner ring of the rim piece in a surrounding manner, the rim piece is sleeved on the at least two rotating pieces through the inner ring of the rim piece, at least part of the rotating pieces are arranged in the first separation limiting groove to limit the rim piece from separating from the foot rod piece, and the rim piece can rotate relative to the foot rod piece through the at least two rotating pieces. Through the structure, the rim piece rotates relative to the foot piece through the at least two rotating pieces, wherein the total purchase cost of the at least two rotating pieces is less than the purchase cost of the large bearing piece, and therefore, the production cost of the hollow caster can be reduced.

Description

Hollow castor

Technical Field

The utility model relates to the technical field of casters, in particular to a hollow caster.

Background

In the prior art, some hollow casters include foot member, big bearing member and rim spare, and foot member and rim spare are connected in the inner circle and the outer lane of big bearing member respectively, and the rim spare can rotate through the relative foot member of big bearing member, and wherein, the purchase cost of big bearing member is higher, so this hollow caster has the higher problem of manufacturing cost.

Disclosure of Invention

The utility model aims to at least solve one of the technical problems in the prior art, and therefore, the utility model provides a hollow castor which can reduce the production cost.

According to the hollow castor, the hollow castor comprises a foot rod piece, a rotating piece and a rim piece, wherein the foot rod piece is provided with a first through hole, the rotating piece is rotatably connected with the foot rod piece, the rotating piece is arranged in at least two, at least two rotating piece rings are arranged on the axis of the first through hole, the rim piece is of a hollow structure, a first separation limiting groove is formed in an inner ring of the rim piece in a surrounding mode, the rim piece is sleeved on the at least two rotating pieces through the inner ring of the rim piece, and the rotating piece is at least partially arranged in the first separation limiting groove to limit the rim piece to separate from the foot rod piece, and can rotate relative to the foot rod piece through the at least two rotating pieces.

The hollow castor provided by the embodiment of the utility model has at least the following beneficial effects: through the structure, the rim piece rotates relative to the foot piece through the at least two rotating pieces, wherein the total purchase cost of the at least two rotating pieces is less than the purchase cost of the large bearing piece, and therefore, the production cost of the hollow caster can be reduced.

According to some embodiments of the utility model, the foot bar member is provided with at least two mounting posts, the axes of the at least two mounting posts are arranged on the first through hole, and the at least two rotating members are sleeved on the at least two mounting posts in a one-to-one correspondence manner.

According to some embodiments of the utility model, the foot bar is provided with a release limiting member, the release limiting member being provided with a second through hole opposite to the first through hole, the release limiting member being capable of limiting the rotation member from being released from the mounting post in a direction away from the foot bar.

According to some embodiments of the utility model, the release limiting member is provided with sleeve portions, the number of the sleeve portions is the same as that of the mounting posts, at least two sleeve portions are sleeved on at least two mounting posts in a one-to-one correspondence manner, and the sleeve portions are located on one side, away from the foot bar, of the corresponding rotating member, so as to limit the rotating member from being separated from the mounting posts in a direction away from the foot bar.

According to some embodiments of the utility model, one of the foot bar and the detachment limiting member is provided with an insert block, the other is provided with a slot, the insert block is provided with a clamping block, the slot wall of the slot is provided with a buckling hole, the clamping block is inserted into the slot, and the clamping block is clamped in the buckling hole.

According to some embodiments of the utility model, the drop-out prevention member is located within the rim member.

According to some embodiments of the utility model, the number of rotation members located above the axis of the first through hole is smaller than the number of rotation members located below the axis of the first through hole.

According to some embodiments of the utility model, the foot bar member includes a foot bar body and a mounting plate, one side portion of the mounting plate is provided on the foot bar body, the mounting plate is provided with the first through hole, and the rotating member is rotatably connected to the other side portion of the mounting plate.

According to some embodiments of the utility model, the rim member includes a hollow ring body and a collar member, the inner ring of the ring body is provided with the first detachment limiting groove, the ring body is sleeved with at least two rotating members through the inner ring of the ring body, the rotating members disposed in the first detachment limiting groove limit the ring body to separate from the foot member, the ring body can rotate relative to the foot member through the at least two rotating members, the collar member is in a hollow structure, and the collar member is sleeved with the ring body through the inner ring of the collar member.

According to some embodiments of the utility model, the outer ring of the ring body is provided with a release limiting block, the inner ring of the ring member is provided with a second release limiting groove, and the release limiting block is inserted into the second release limiting groove to limit the ring member from being separated from the ring body along the axial direction of the ring body.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a block diagram of one embodiment of a hollow caster of the present utility model;

FIG. 2 is a partially exploded view of the hollow castor shown in FIG. 1;

FIG. 3 is a block diagram of the drop-out member shown in FIG. 2;

FIG. 4 is a partially exploded view of the rim member illustrated in FIG. 2;

fig. 5 is a cross-sectional view of the rim member shown in fig. 2.

Reference numerals:

foot bar 100, foot bar body 110, connecting tube 111, mounting piece 120, first through hole 121, mounting post 122, slot 123, fastening hole 123A, first abutment 124;

a rotating member 200;

the rim member 300, the rim body 310, the first limiting and disengaging groove 311, the limiting and disengaging block 312, the insertion hole 312A, the ferrule member 320, the second limiting and disengaging groove 321 and the insertion block 321A;

the release limiter 400, the second through hole 410, the sleeve portion 420, the insert block 430, the clamp block 431, and the second abutting portion 440.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, if any, the first, second, third, fourth, fifth, etc. are described for the purpose of distinguishing between technical features only, and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless clearly defined otherwise, the terms "disposed," "mounted," "connected," and the like are to be construed broadly and may be connected directly or indirectly through an intermediary; the connecting device can be fixedly connected, detachably connected and integrally formed; may be a mechanical connection; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the utility model can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.

Referring to fig. 1 to 5, the hollow caster of the embodiment of the present utility model includes a caster member 100, a rotation member 200, and a rim member 300.

The foot member 100 is provided with a first through hole 121, the rotating members 200 are rotatably connected to the foot member 100, the rotating members 200 are six, the six rotating members 200 are arranged around the axis of the first through hole 121, the rim member 300 is in a hollow structure, the inner ring of the rim member 300 is provided with a first separation limiting groove 311, the rim member 300 is sleeved on the six rotating members 200 through the inner ring thereof, the rotating members 200 are at least partially arranged in the first separation limiting groove 311 to limit the rim member 300 to separate from the foot member 100, and the rim member 300 can rotate relative to the foot member 100 through the six rotating members 200.

With the above-described structure, the rim member 300 is rotated with respect to the foot link member 100 by the six rotation members 200, wherein the total purchase cost of the six rotation members 200 is less than the purchase cost of the large bearing member, and thus, the production cost of the hollow caster can be reduced.

In some embodiments, the number of the rotating members 200 is five, the rim 300 is sleeved on the five rotating members 200 through the inner ring, and the rim 300 can rotate relative to the foot bar 100 through the five rotating members 200.

In some embodiments, the number of the rotating members 200 is seven, the rim 300 is sleeved on the seven rotating members 200 through the inner ring, and the rim 300 can rotate relative to the foot bar 100 through the seven rotating members 200.

Foot bar 100 includes a foot bar body 110 and a mounting tab 120.

Referring to fig. 1 and 2, one side of the mounting piece 120 is provided to the foot bar body 110, the mounting piece 120 is provided with a first through hole 121, and the rotation member 200 is rotatably coupled to the other side of the mounting piece 120.

In the present embodiment, referring to fig. 1 and 2, the foot bar body 110 and the mounting piece 120 are an integrally formed structure.

In some embodiments, the foot bar body 110 and the mounting plate 120 are detachably connected to enable replacement of the foot bar body 110 or the mounting plate 120, respectively, when the foot bar body 110 or the mounting plate 120 is damaged, so that the foot bar 100 can be put into use again. The foot rod body 110 and the mounting plate 120 are detachably connected, specifically, the foot rod body 110 is provided with at least two first connecting holes, the mounting plate 120 is provided with at least two second connecting holes, and the bolt and nut assemblies are correspondingly penetrated by the at least two second connecting holes and the at least two first connecting holes one by one.

In the present embodiment, referring to fig. 1 and 2, the foot lever body 110 is provided with a connection tube 111, the connection tube 111 being disposed in the up-down direction, the connection tube 111 being for connection with an external device.

The rotating member 200 is rotatably connected to the other side portion of the mounting plate 120, specifically, referring to fig. 2, six mounting posts 122 are disposed on the other side portion of the mounting plate 120, the six mounting posts 122 are disposed around the axis of the first through hole 121, and the six rotating member 200 is sleeved on the six mounting posts 122 in a one-to-one correspondence.

In this embodiment, referring to fig. 2, the rotating member 200 is configured as a small bearing member, the rotating member 200 is sleeved on the corresponding mounting post 122 through the inner ring thereof, and the outer ring of the rotating member 200 is disposed on the first detachment limiting groove 311.

In some embodiments, the rotating member 200 is configured as a ball member, the ball member is provided with a third mounting hole along a diameter direction thereof, the ball member is sleeved on the corresponding mounting post 122 through the third mounting hole, and the ball member is partially disposed in the first detachment limiting groove 311.

In some embodiments, the rotating member 200 is configured as a roller member, and the roller member is sleeved on the corresponding mounting post 122 through an inner ring thereof, and the roller member is partially disposed in the first detachment limiting slot 311.

In order to reduce the probability of occurrence of detachment of the rotation member 200 from the mounting post 122, referring to fig. 2 and 3, the other side portion of the mounting plate 120 is provided with a detachment limiting member 400, the detachment limiting member 400 is provided with a second through hole 410 opposite to the first through hole 121, and the detachment limiting member 400 can limit detachment of the rotation member 200 from the mounting post 122 in a direction away from the mounting plate 120.

The other side portion of the mounting plate 120 is provided with a detachment limiting member 400, the detachment limiting member 400 can limit the rotation member 200 from being separated from the mounting column 122 along the direction away from the mounting plate 120, specifically, referring to fig. 2 and 3, the detachment limiting member 400 is provided with sleeve portions 420, the number of the sleeve portions 420 is the same as that of the mounting columns 122, six sleeve portions 420 are sleeved on the six mounting columns 122 in a one-to-one correspondence manner, and the sleeve portions 420 are located on one side of the corresponding rotation member 200 away from the mounting plate 120 so as to limit the rotation member 200 from being separated from the mounting columns 122 along the direction away from the mounting plate 120.

In order to improve the connection tightness between the detachment limiting member 400 and the mounting plate 120, referring to fig. 2 and 3, the detachment limiting member 400 is provided with four insert blocks 430, the other side portion of the mounting plate 120 is provided with four slots 123, the four slots 123 are uniformly arranged around the axis of the first through hole 121, the insert blocks 430 are provided with clamping blocks 431, the slot walls of the slots 123 are provided with buckling holes 123A, the four insert blocks 430 are inserted into the four slots 123 in a one-to-one correspondence manner, and the four clamping blocks 431 are clamped in the four buckling holes 123A in a one-to-one correspondence manner.

In this embodiment, the sleeve portion 420 is detachably sleeved on the corresponding mounting post 122, that is, the other side portion of the mounting plate 120 is detachably provided with a detachment limiting member 400, and the detachment limiting member 400 can be detached from the mounting plate 120, so as to facilitate the maintenance of the rotating member 200 on the mounting post 122.

In this embodiment, referring to fig. 2, the other side portion of the mounting plate 120 is provided with a first abutment portion 124, the detachment limiting member 400 is provided with a second abutment portion 440 corresponding to the first abutment portion 124, and when the six sleeve portions 420 are sleeved on the six mounting posts 122 in a one-to-one correspondence, the four inserting blocks 430 are inserted in the four inserting slots 123 in a one-to-one correspondence, and the four clamping blocks 431 are clamped in the four fastening holes 123A in a one-to-one correspondence, the first abutment portion 124 abuts against the second abutment portion 440.

In some embodiments, to achieve the detachable connection between the mounting piece 120 and the detachment limiting member 400, the sleeve portion 420 is detachably sleeved on the corresponding mounting post 122, the mounting piece 120 is provided with a fourth mounting hole, the detachment limiting member 400 is provided with a connecting post, the connecting post is provided with a fifth mounting hole corresponding to the fourth mounting hole, the connecting post abuts against the other side portion of the mounting piece 120, the connecting post is in threaded connection with a bolt member, and the bolt member penetrates through the fourth mounting hole and the fifth mounting hole.

In some embodiments, the other side portion of the mounting piece 120 is provided with four insert blocks 430, the detachment limiting piece 400 is provided with four slots 123, the axes of the first through holes 121 of the four insert blocks 430 are uniformly arranged, the insert blocks 430 are provided with clamping blocks 431, the slot walls of the slots 123 are provided with buckling holes 123A, the four insert blocks 430 are inserted into the four slots 123 in a one-to-one correspondence manner, and the four clamping blocks 431 are clamped into the four buckling holes 123A in a one-to-one correspondence manner.

In some embodiments, the number of inserts 430 and slots 123 are each set to three, five, etc.

In order to make the structure of the hollow caster more compact, the drop-out preventing member 400 is located in the rim 300.

In some embodiments, the drop limiting member 400 is at least partially located outside of the rim member 300.

In order to improve the supporting effect of the hollow caster, referring to fig. 2, the number of the rotating members 200 above the axis of the first through hole 121 is smaller than the number of the rotating members 200 below the axis of the first through hole 121, specifically, one rotating member 200 among the six rotating members 200 is above the axis of the first through hole 121, three rotating members 200 are below the axis of the first through hole 121, one rotating member 200 is in front of the axis of the first through hole 121, and one rotating member 200 is behind the axis of the first through hole 121.

In some embodiments, two of the six rotational pieces 200 are located above the axis of the first through hole 121, and four rotational pieces 200 are located below the axis of the first through hole 121.

The rim member 300 includes a ring body 310 and a collar member 320.

Referring to fig. 2, 4 and 5, the ring body 310 has a hollow structure, the inner ring of the ring body 310 is provided with a first detachment limiting groove 311, the ring body 310 is sleeved with six rotating members 200 through the inner ring thereof, the rotating members 200 arranged in the first detachment limiting groove 311 limit the ring body 310 to separate from the foot bar member 100, the ring body 310 can rotate relative to the foot bar member 100 through the six rotating members 200, the ring member 320 has a hollow structure, and the ring member 320 is sleeved with the ring body 310 through the inner ring thereof. Wherein the collar member 320 may be provided as a wear resistant rubber ring or the like.

Through the above structure, the ring body 310 indirectly contacts with the ground through the collar member 320, and the collar member 320 can provide a certain anti-wear effect for the ring body 310, so that the service life of the ring body 310 can be prolonged.

In some embodiments, the rim 300 only includes a ring body 310, the ring body 310 is in a hollow structure, the inner ring of the ring body 310 is provided with a first separation limiting groove 311, the ring body 310 is sleeved on the six rotating members 200 through the inner ring thereof, the rotating members 200 disposed in the first separation limiting groove 311 limit the ring body 310 from separating from the foot member 100, and the ring body 310 can rotate relative to the foot member 100 through the six rotating members 200.

In order to reduce the probability of the occurrence of the disengagement of the collar 320 from the collar body 310, referring to fig. 2, 4 and 5, the outer ring of the collar body 310 is provided with a disengagement limiting block 312, the inner ring of the collar 320 is provided with a second disengagement limiting groove 321, and the disengagement limiting block 312 is inserted into the second disengagement limiting groove 321 to limit the disengagement of the collar 320 from the collar body 310 along the axial direction of the collar body 310.

In some embodiments, the outer ring of the ring body 310 is provided with a second detachment limiting groove 321, the inner ring of the collar member 320 is provided with a detachment limiting block 312, and the detachment limiting block 312 is inserted into the second detachment limiting groove 321 to limit the collar member 320 from being detached from the ring body 310 along the axis of the ring body 310.

In order to further reduce the probability of the collar 320 coming off the collar body 310, referring to fig. 4 and 5, the detachment limiting block 312 is provided with a plurality of insertion holes 312A, the axes of the collar body 310 of the plurality of insertion holes 312A are arranged, the groove wall of the second detachment limiting groove 321 is provided with a plurality of insertion blocks 321A, the axes of the collar 320 of the plurality of insertion blocks 321A are arranged, and the plurality of insertion blocks 321A are inserted into the plurality of insertion holes 312A in a one-to-one correspondence manner. Wherein the plurality of plug-in blocks 321A is at least three plug-in blocks 321A; the plurality of receptacles 312A is at least three receptacles 312A.

Of course, the present utility model is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications and substitutions are included in the scope of the present utility model as defined in the appended claims.

Claims (10)

1. A hollow castor, characterized in that: comprising

A foot bar (100) provided with a first through hole (121);

the rotating parts (200) are rotatably connected to the foot rod pieces (100), the number of the rotating parts (200) is at least two, and at least two rotating parts (200) are arranged around the axis of the first through hole (121);

the rim piece (300) is of a hollow structure, a first limiting and disengaging groove (311) is formed in an inner ring of the rim piece (300), the rim piece (300) is sleeved on at least two rotating pieces (200) through an inner ring of the rim piece, the rotating pieces (200) are at least partially arranged in the first limiting and disengaging groove (311) to limit the rim piece (300) to be separated from the foot rod piece (100), and the rim piece (300) can rotate relative to the foot rod piece (100) through at least two rotating pieces (200).

2. A hollow castor as claimed in claim 1, wherein:

the foot member (100) is provided with at least two mounting columns (122), at least two mounting columns (122) are arranged around the axis of the first through hole (121), and at least two rotating members (200) are sleeved on at least two mounting columns (122) in a one-to-one correspondence manner.

3. A hollow castor as claimed in claim 2, wherein:

the foot member (100) is provided with a release limiting member (400), the release limiting member (400) is provided with a second through hole (410) opposite to the first through hole (121), and the release limiting member (400) can limit the rotating member (200) to be separated from the mounting column (122) along a direction away from the foot member (100).

4. A hollow castor according to claim 3, wherein:

the limiting piece (400) is provided with sleeve portions (420), the number of the sleeve portions (420) is the same as that of the mounting columns (122), at least two of the sleeve portions (420) are sleeved on at least two of the mounting columns (122) in a one-to-one correspondence mode, and the sleeve portions (420) are located on one sides, away from the foot rod pieces (100), of the corresponding rotating pieces (200) so as to limit the rotating pieces (200) to be separated from the mounting columns (122) along the direction away from the foot rod pieces (100).

5. A hollow castor according to claim 3, wherein:

one of the foot rod piece (100) and the limiting piece (400) is provided with an inserting block (430), the other is provided with a slot (123), the inserting block (430) is provided with a clamping block (431), the slot wall of the slot (123) is provided with a buckling hole (123A), the inserting block (430) is inserted into the slot (123), and the clamping block (431) is clamped in the buckling hole (123A).

6. A hollow castor according to claim 3, wherein:

the drop-out limiting member (400) is located within the rim member (300).

7. A hollow castor as claimed in claim 1, wherein:

the number of the rotating members (200) above the axis of the first through hole (121) is smaller than the number of the rotating members (200) below the axis of the first through hole (121).

8. A hollow castor as claimed in claim 1, wherein:

the foot bar (100) comprises:

a foot lever body (110);

the mounting piece (120), one side is located foot pole body (110), mounting piece (120) are equipped with first through-hole (121), rotate piece (200) rotate connect in the other side of mounting piece (120).

9. A hollow castor as claimed in claim 1, wherein:

the rim (300) comprises:

the ring body (310) is of a hollow structure, the first limiting and disengaging groove (311) is formed in the inner ring of the ring body (310) in a surrounding mode, the ring body (310) is sleeved on at least two rotating pieces (200) through the inner ring of the ring body, the rotating pieces (200) arranged in the first limiting and disengaging groove (311) limit the ring body (310) to be separated from the foot rod piece (100), and the ring body (310) can rotate relative to the foot rod piece (100) through at least two rotating pieces (200);

the ring-clamping piece (320) is of a hollow structure, and the ring-clamping piece (320) is sleeved on the ring body (310) through an inner ring of the ring-clamping piece.

10. A hollow castor as claimed in claim 9, wherein:

the outer ring of the ring body (310) is provided with a limiting and disengaging block (312), the inner ring of the ring member (320) is provided with a second limiting and disengaging groove (321), and the limiting and disengaging block (312) is inserted into the second limiting and disengaging groove (321) so as to limit the ring member (320) to be disengaged from the ring body (310) along the axial direction of the ring body (310).