TW201345751A - Multi-functional truckle structure - Google Patents

Abstract

A multi-functional truckle structure comprises a positioning seat, a rotating seat, an engaging element, a body, a swing element, a longitudinal rod assembly, an engaging assembly, a transverse rod, an operation pedal and a releasing pedal. When the user downwardly tramps on or upwardly triggers the operation pedal, the longitudinal rod assembly will make the engaging assembly engage with or separate from the engaging element, and the swing element engage with or separate from the body, so as to turn, fix and brake the truckle according to using requirements, thus improving the convenience in using.

Description

Multi-function caster structure

The present invention relates to casters, and more particularly to a caster structure having functions of steering, orientation, braking, and the like.

Generally, in order to make the carrier (bed, precision instrument or workbench...) easy to move and labor-saving, casters are usually disposed under the carrier. The casters were initially fixed and non-rotatable, resulting in the carrier being able to turn only straight. For this reason, a rotary caster was developed on the market to provide the ability to turn when the carrier is displaced. Subsequently, in order to prevent the caster from being uneven due to the ground when it is stationary, or by other factors, the caster is designed with a pedal that can be controlled to control the displacement of the carrier, such as the Republic of China patent. Announcements Nos. I338633, I343876, M424278, M422488, M414337, etc. all show a caster with a pedal that can be braked.

However, these conventional brake-operated casters still have the following immediate improvement in practical use: when the carrier is equipped with a rotary caster having a brake function, the carrier is in the process of moving because the caster The rotation of the carrier is arbitrarily made, so that the direction of the displacement of the carrier is not easily controlled due to the uneven thrust applied to the carrier during the straight displacement.

Therefore, when the carrier is provided with the rotary caster, although the carrier can smoothly perform the turning action as required, in the process of the straight displacement, there is a defect that it is difficult to control the direction of the carrier's traveling displacement, and the carrier is Configuration has the most When the casters are fixed (i.e., fixed non-rotatable casters), although the carrier is controlled in the direction of displacement of the straight line, it is difficult to perform the shift of the turn.

Accordingly, how to develop a caster structure that can simultaneously solve the above-mentioned drawbacks, that is, the motivation of the present invention.

It is an object of the present invention to provide a multi-functional caster structure that primarily enables the caster to perform functions such as steering, orientation, and braking as needed to enhance the ease of use of the caster.

In order to achieve the foregoing objective, a multifunctional caster structure according to the present invention includes: a positioning base having a shaft portion; a rotating base rotatably disposed on the positioning seat and having a pivoting a pivoting portion of the shaft portion; a latching member fixed in the rotating base and having a latching hole and a latching tooth; a wheel body rotatably disposed on the rotating base and having a toothed portion; The brake swing member has a brake pivot portion pivoted on the rotary seat, a brake pressure receiving portion on a side of the brake pivot portion, and a brake receiving portion on the other side of the brake hinge portion and engaging or disengaging the gear tooth portion a brake lever portion; a longitudinal rod group, wherein the shaft portion is axially movably disposed in the shaft portion and the rotary seat, and has a first end portion and a second end portion abutting against the brake pressure receiving portion And a first and second shoulder portions disposed between the first and second ends; a latching group disposed between the first and second shoulders of the longitudinal rod group and having a card or a card protrusion that is disengaged from the latching hole, and a latching portion that engages or disengages the latching tooth; a crossbar is disposed in the shaft portion and has Pushing a portion abutting the first end portion and a pressure receiving portion opposite to the pushing portion; an operating pedal swingably provided in the Positioning the seat, and having an operating pivot portion pivoted on the positioning seat, an operating step portion at one end of the operating pivot portion, and a second end located at the operating pivot portion and respectively pressed against the pressure receiving portion of the crossbar The orientation step, the normal step, and the brake step, when the normal step and the pressure receiving portion are pressed, the card protrusion and the tooth portion of the card group are respectively separated from the card hole and the card of the card member The brake tooth portion of the brake shoe is disengaged from the gear tooth portion of the wheel body, so that the rotary seat rotates relative to the positioning seat, and the wheel body rotates relative to the rotary seat, when the orientation step and the pressure receiving portion are pressed The card protrusion of the card group is engaged in the card hole, so that the rotation seat cannot rotate relative to the positioning seat, and when the brake step is pressed against the pressure receiving portion, the card tooth of the card group The brake is formed on the tooth portion of the brake shoe, and the brake tooth portion of the brake shoe is engaged with the gear tooth portion of the wheel body, so that the wheel body cannot rotate relative to the rotary seat; and the pedal is released, and the brake can be reset after being set to The positioning seat presses the normal step of the operating pedal against the pressure receiving portion by stepping on.

Preferably, the positioning seat further has a fixing portion fixed under the carrier.

Preferably, a bearing is disposed between the pivot portion of the rotating base and the shaft portion of the positioning seat.

Preferably, the longitudinal rod group includes a first longitudinal rod and a second longitudinal rod, wherein the first longitudinal rod can extend the shaft portion to be axially movably disposed in the shaft portion, and has the first end portion, a first joint portion opposite to the first end portion and the first shoulder portion between the first end portion and the first joint portion, the second longitudinal rod having a connection to the first joint portion a second joint portion, a second end portion opposite to the second joint portion and abutting the brake pressure receiving portion, and a second portion between the second joint portion and the second end portion Shoulder.

Preferably, the latch set includes a washer, a first tooth member, a second tooth member, and a spring, wherein the washer sleeves the second joint portion and abuts against the second shoulder portion, The first toothed member is sleeved with the second joint portion, and has the toothed portion and an inner perforation. The second toothed member sleeves the second joint portion and is pressed against the washer, and has a a slot in which the first joint portion is inserted, a ring portion that is pressed by the first shoulder portion, the card protrusion portion that is disposed on a circumferential side of the ring portion, and a through hole is engaged with the first tooth member a tooth portion of the inner perforation, the spring being disposed between the first tooth member and the second tooth member ring portion.

Preferably, the first end of the first longitudinal rod abuts against the cross-bar pushing portion.

Preferably, the rotating base includes a main seat body having the pivot portion, and an auxiliary seat body fixed to the main seat body and pivoting the brake shoe and having a bearing portion. A brake abutting portion is connected to the brake receiving portion, and the brake elastic abutting portion bears against the bearing portion, so that the brake pressure receiving portion is held against the vertical rod group upward.

Preferably, the release pedal has a release pivot portion pivoted to the positioning seat, a release step portion at one end of the release pivot portion, and a first release protrusion portion at the other end of the release pivot portion and a first Dissolving the convex portion, the operating pedal further has a first abutting surface on the same side of the operating step portion, and a second abutting surface on the same side of the operating step portion, when the oriented step portion and the pressure receiving portion are pressed When the first abutting surface abuts against the first releasing convex portion, when the braking step portion is pressed against the pressure receiving portion, the second abutting surface abuts against the second releasing convex portion.

The present invention has been described in connection with the preferred embodiments of the present invention in accordance with the accompanying drawings.

Referring to Figures 1 to 5, a multifunctional caster structure according to an embodiment of the present invention is suitably disposed under the carrier 200. The caster is mainly composed of a positioning base 100, a rotating base 10, a latching member 20, and a wheel. The body 30, a brake cover 40, a longitudinal rod set 50, a cassette set 60, a crossbar 70, an operating pedal 80, and a release pedal 90, wherein: the positioning base 100 has a fixed The fixing portion 101 and the shaft portion 102 are disposed under the carrier 200. The fixing portion 101 can be fixed under the carrier 200 by screws or the like, and the shaft portion 102 extends downward from the fixing portion 101.

The rotating base 10 is rotatably disposed on the positioning base 100 and has a pivot portion 111 pivoted on the shaft portion 102. In this embodiment, the rotating base 10 includes a main body having the pivot portion 111. 11 and an auxiliary base 12 fixed to the main body 11 and having a bearing portion 121, and a bearing 13 is disposed between the pivot portion 111 and the shaft portion 102 of the positioning base 100 to rotate the shaft The seat 10 is rotatable relative to the positioning base 100.

The latching member 20 is fixed in the rotating base 10 and has a latching hole 21 and a latching tooth 22, wherein the latching hole 21 has a distance from the latching tooth 22, and the latching The hole 21 is closer to the shaft portion 102 than the latching tooth 22.

The wheel body 30 is rotatably disposed on the main body 11 of the rotating base 10 and has a gear tooth portion 31. The wheel body 30 is mainly composed of two wheel members 32, and The wheel body 30 and the main body 11 are placed by a pivot 33.

The brake shoe 40 has a brake arm portion 41 pivoted on the auxiliary base 12 of the rotating base 10, a brake receiving portion 42 on one side of the brake arm portion 41, and another brake arm portion 41. In the embodiment, the brake shoe 40 further has a brake elastic abutment portion 44 connected to the brake pressure receiving portion 42. The brake elastic abutment portion 44 is coupled to the brake tooth portion 43 of the wheel tooth portion 31. The brake receiving portion 42 has an upward pressing force against the bearing portion 121 of the auxiliary base 12.

The longitudinal rod group 50 can be disposed in the shaft portion 102 and the rotating base 10 in an axially movable manner, and has a first end portion 511 and a second abutting against the brake pressure receiving portion 42. The end portion 522 and the first and second shoulder portions 513 and 523 disposed between the first and second end portions 511 and 522 are held by the brake pressure receiving portion 42 against the vertical rod group 50. In the embodiment, the longitudinal rod set 50 includes a first longitudinal rod 51 and a second longitudinal rod 52. The first longitudinal rod 51 can extend the shaft portion 102 to be axially movable in the shaft portion 102. And the first vertical rod 51 has the first end portion 511 , a first joint portion 512 opposite to the first end portion 511 , and the first end portion 511 . And the first shoulder portion 513 between the first joint portion 512, the second vertical rod 52 is movably inserted into the auxiliary seat body 12 and cannot be rotated relative to the auxiliary seat body 12, the second longitudinal direction The rod 52 has a second joint portion 521 connected to the first joint portion 512, a second end portion 522 opposite to the second joint portion 521 and abutting against the brake pressure receiving portion 42, and a Second joint portion 521 The second shoulder portion between the second end 522,523.

The cassette group 60 is disposed between the first and second shoulder portions 513 and 523 of the longitudinal rod group 50, and has a card convex portion that is locked or disengaged from the latching hole 21 of the latching member 20, and a card Engaging or disengaging the latching portion of the latching member 22 of the latching member 20; in the embodiment, the latching member 60 includes a washer 61, a first tooth member 62, a second tooth member 63, and a spring 64. The second gear portion 522 of the second longitudinal rod 52 is sleeved against the second shoulder portion 523, and the first tooth member 62 is sleeved with the second joint portion 522 and has the same a toothing portion 621 and an inner tooth hole 622. The second toothing member 63 is sleeved on the second joint portion 522 and pressed against the washer 61, and has a first joint portion 512 for the first end rod 511. The inserted tooth groove 631, a ring portion 632 pressed by the first shoulder portion 513, the card convex portion 633 ringing on the circumferential side of the ring portion 632, and a through hole are fixed to the first tooth member The tooth portion 634 of the inner tooth hole 622 is disposed between the first tooth member 62 and the ring portion 632 of the second tooth member 63.

The crossbar 70 is disposed in the shaft portion 102 and has a pushing portion 71 that abuts against the first end portion 511 of the first vertical rod 51 and a pressure receiving portion 72 that is opposite to the pushing portion 71. In the embodiment, the pushing portion 71 and the first end portion 511 of the first vertical rod 51 are inclined to each other.

The operating pedal 80 is swingably disposed on the positioning base 100 by the first spring 81, and has an operating pivot portion 82 pivoted on the positioning base 100 and an operating step portion at one end of the operating pivot portion 82. 83, and an orientation step 84, a normal step portion 85, and a brake step portion 86 which are located at the other end of the operation pivot portion 83 and are respectively pressed against the pressure receiving portion 72 of the cross bar 70. In this embodiment, the operation pedal 80 more a first abutting surface 87 on the same side of the operating step portion 83 and a second abutting surface 88 on the same side of the operating step portion 84, the orientation step portion 84, the normal step portion 85, and the brake step portion 86 is respectively pressed against the pressure receiving portion 72 of the cross bar 70, so that the caster performs functions such as orientation, steering, and braking to improve the usability of the caster.

The release pedal 90 is swingably mounted by the second spring 91 and is repositionably disposed on the positioning base 100. The normal step 85 of the operating pedal 80 is pressed against the pressure receiving portion 72 by stepping on it. In this embodiment, The release pedal 90 has a release pivot portion 92 pivotally mounted to the positioning base 100, a release step portion 93 at one end of the release pivot portion 92, and a first release projection portion 94 at the other end of the release pivot portion 92. And a second releasing convex portion 95, when the positioning step portion 84 is pressed against the pressure receiving portion 72, the first abutting surface 87 abuts against the first releasing convex portion 94, when the braking step portion 86 and the pressing portion The portion 72 is pressed against, and the second abutting surface 88 abuts against the second releasing convex portion 85.

The above description is the structure and configuration description of each main component of the embodiment of the present invention. The mode of operation of the present invention and its efficacy are explained below.

When the caster of the present invention performs the steering function, as shown in FIG. 6, the normal step 85 of the operating pedal 80 is pressed against the pressed portion 72 of the crossbar 70. At this time, the first tooth 62 is The engaging portion 621 of the second tooth member 621 and the engaging portion 633 of the second tooth member 63 are respectively separated from the latching teeth 22 and the latching holes 21 of the latching member 20, and at the same time, the brake tooth portion 43 of the brake swinging member 40 is disengaged from the wheel body 30. The tooth portion 31 rotates the rotating base 10 relative to the positioning base 100, and the wheel body 30 rotates relative to the rotating base 10. According to this, the carrier of the caster of the present invention can be used to perform the steering operation.

When the caster of the present invention performs the braking function, as shown in Figures 3 and 7, First, the operation step portion 83 of the operation pedal 80 is stepped down, the brake step portion 86 of the operation pedal 80 is pressed against the pressure receiving portion 72, and the second abutment surface 88 of the operation pedal 80 is abutted against the release pedal 90. The second release protrusion 95, at this time, the crossbar 70 is moved a distance toward the first vertical rod 51, and the first vertical rod 51 and the second vertical rod 52 are displaced downward by a distance, and the first The first and second longitudinal rods 51 and 52 drive the engaging portions 621 of the first tooth member 62 and the latching teeth 22 of the latching member 20 to be locked with each other, so that the rotating base 10 cannot rotate relative to the positioning base 100; In addition, the second end portion 521 of the second vertical rod 52 is pressed against the brake pressure receiving portion 42 to pivot the brake swing member 40 clockwise, and finally the brake tooth portion 43 of the brake swing member 40 is locked to the brake rod portion 43. The gear tooth portion 31 of the wheel body 30 prevents the wheel body 30 from rotating relative to the rotating base 10. According to this, the carrier of the caster of the present invention can be provided to achieve the function of braking and stopping.

When the brake function is to be released, as shown in FIG. 8, the release step 93 of the release pedal 90 can be stepped down, and the second release projection 95 can be pushed against the second abutment surface 88 of the operation pedal 80. The operation pedal 80 is pivoted by an angle to return to a state in which the normal step portion 85 of the operation pedal 80 is pressed against the pressure receiving portion 72 of the crossbar 70, and the state thereof is as shown in Fig. 6.

When the caster of the present invention performs the directional function, as shown in FIGS. 3 and 9, the operation step portion 83 of the operation pedal 80 is first pulled upward to press the orientation step portion 84 of the operation pedal 80 and the pressure receiving portion 72. The first abutting surface 87 of the operating pedal 80 abuts against the first releasing convex portion 94 of the releasing pedal 90. At this time, the crossbar 70 has a space moving in the opposite direction to the first vertical rod 51, and Interconnected The first and second longitudinal rods 51 and 52 are pushed upward by the brake pressure receiving portion 42 of the brake shoe 40, and the first and second longitudinal rods 51 and 52 drive the convex portion of the second tooth member 63. 633 and the latching hole 21 of the latching member 20 are mutually engaged, so that the rotating base 10 cannot be rotated relative to the positioning base 100; in addition, since the brake pressure receiving portion 42 of the brake swinging member 40 is no longer the second The second end portion 521 of the longitudinal rod 52 is pressed, so that the brake tooth portion 43 of the brake shoe 40 is disengaged from the tooth portion 31 of the wheel body 30, so that the wheel body 30 is rotated relative to the rotating base 10, at this time, Since the rotary base 10 cannot be rotated relative to the positioning base 100, and the wheel body 30 is rotatable relative to the rotary base 10, the carrier provided with the caster of the present invention can be displaced in a specific direction.

When the orientation function is to be released, as shown in FIG. 10, the release step 93 of the release pedal 90 can be stepped down to push the first release projection 94 against the first abutment surface 87 of the operation pedal 80. The operation pedal 80 is pivoted by an angle against the time, and is restored to a state in which the normal step portion 85 of the operation pedal 80 is pressed against the pressure receiving portion 72 of the cross bar 70.

In summary, the present invention can achieve the functions of turning, orienting, and braking for the caster to meet the needs of the caster, so as to improve the ease of use of the caster, and the above embodiments and illustrations are only preferred of the present invention. The scope of the invention is not limited by the scope of the invention, and the equivalent changes and modifications made by the invention in the scope of the invention are within the scope of the invention.

200‧‧‧ Carrier

100‧‧‧ Positioning Block

101‧‧‧Fixed Department

102‧‧‧Axis

10‧‧‧ rotating seat

11‧‧‧ main seat

111‧‧‧Band

12‧‧‧Auxiliary body

121‧‧‧Responsible Department

13‧‧‧ Bearing

20‧‧‧ Cards

21‧‧‧Card hole

22‧‧‧ card tooth

30‧‧‧ wheel body

31‧‧‧ teeth

32‧‧‧ Wheels

33‧‧‧ pivot

40‧‧‧Brake ornaments

41‧‧‧Brake hub

42‧‧‧Brake pressure department

43‧‧‧ brake teeth

44‧‧‧Brakes

50‧‧‧longitudinal group

51‧‧‧First longitudinal rod

511‧‧‧ first end

512‧‧‧ first joint

513‧‧‧First shoulder

52‧‧‧Second longitudinal rod

521‧‧‧Second junction

522‧‧‧second end

523‧‧‧Second shoulder

60‧‧‧Carson Group

61‧‧‧Washers

62‧‧‧First tooth

621‧‧‧ teeth

622‧‧‧ internal perforations

63‧‧‧second tooth

631‧‧‧ cogging

632‧‧‧ Ring Department

633‧‧‧ card convex

634‧‧‧ teeth

64‧‧‧ Spring

70‧‧‧cross bar

71‧‧‧Pushing Department

72‧‧‧ Pressure Department

80‧‧‧Operation pedal

81‧‧‧First spring

82‧‧‧Operational pivot

83‧‧‧Operation

84‧‧‧ orientation stage

85‧‧‧Normal Stage

86‧‧‧ brake step

87‧‧‧ first face

88‧‧‧ second arrival

90‧‧‧Remove the pedal

91‧‧‧Second spring

92‧‧‧Remove the pivot

93‧‧‧Retirement

94‧‧‧First lifting convex

95‧‧‧Second release convex

Fig. 1 is a perspective exploded view of the present invention.

Figure 2 is a perspective assembled view of the present invention.

Fig. 3 is a perspective assembled view of the present invention, showing the combined state of the positioning seat, the latching member, the vertical rod group, the cassette group, the operating pedal, and the release pedal.

Fig. 4 is a perspective assembled view of the present invention, showing the combined state of the operating pedal and the release pedal.

Figure 5 is a cross-sectional view of line 5-5 of Figure 2.

Figure 6 is an actuation diagram of the present invention showing the state in which the casters perform the steering function.

Figure 7 is an actuation diagram of the present invention showing the state in which the casters perform the braking function.

Fig. 8 is an actuation diagram of the present invention showing the state in which the brake function of the caster is released.

Figure 9 is an actuation diagram of the present invention showing the state in which the casters perform the directional function.

Figure 10 is an actuation diagram of the present invention showing the state in which the caster orientation function is released.

100‧‧‧ Positioning Block

101‧‧‧Fixed Department

102‧‧‧Axis

10‧‧‧ rotating seat

11‧‧‧ main seat

111‧‧‧Band

12‧‧‧Auxiliary body

121‧‧‧Responsible Department

13‧‧‧ Bearing

20‧‧‧ Cards

21‧‧‧Card hole

30‧‧‧ wheel body

31‧‧‧ teeth

32‧‧‧ Wheels

33‧‧‧ pivot

40‧‧‧Brake ornaments

41‧‧‧Brake hub

42‧‧‧Brake pressure department

43‧‧‧ brake teeth

44‧‧‧Brakes

50‧‧‧longitudinal group

51‧‧‧First longitudinal rod

511‧‧‧ first end

512‧‧‧ first joint

513‧‧‧First shoulder

52‧‧‧Second longitudinal rod

521‧‧‧Second junction

522‧‧‧second end

523‧‧‧Second shoulder

60‧‧‧Carson Group

61‧‧‧Washers

62‧‧‧First tooth

621‧‧‧ teeth

622‧‧‧ internal perforations

63‧‧‧second tooth

631‧‧‧ cogging

632‧‧‧ Ring Department

633‧‧‧ card convex

634‧‧‧ teeth

64‧‧‧ Spring

70‧‧‧cross bar

71‧‧‧Pushing Department

72‧‧‧ Pressure Department

80‧‧‧Operation pedal

81‧‧‧First spring

82‧‧‧Operational pivot

83‧‧‧Operation

84‧‧‧ orientation stage

85‧‧‧Normal Stage

86‧‧‧ brake step

90‧‧‧Remove the pedal

91‧‧‧Second spring

92‧‧‧Remove the pivot

93‧‧‧Retirement

Claims (8)

The utility model relates to a multifunctional caster structure, comprising: a positioning seat having a shaft portion; a rotating base rotatably disposed on the positioning seat, and having a pivot portion pivoted on the shaft portion; a latching member fixed on the The rotating base has a latching hole and a latching tooth; a wheel body rotatably disposed on the rotating base and having a gear tooth portion; and a brake swing member having a brake pivot pivotally mounted on the rotating base a brake receiving portion on one side of the brake arm portion, and a brake tooth portion on the other side of the brake arm portion and engaging or disengaging the gear tooth portion; a longitudinal rod group extending the shaft portion The shaft is axially movably disposed in the shaft portion and the rotating base, and has a first end portion, a second end portion abutting against the brake pressure receiving portion, and a first end portion and a second end portion The first and second shoulder portions; a card stack group disposed between the first and second shoulder portions of the longitudinal rod group, and having a card protrusion portion that is stuck or disengaged from the card hole, and an engagement or a toothed portion of the latching tooth; a crossbar disposed in the shaft portion and having a pushing portion abutting the first end portion and a reverse direction a pressure receiving portion of the portion; an operating pedal rotatably disposed on the positioning seat, and having an operating pivot portion pivoted on the positioning seat, an operating step portion at one end of the operating pivot portion, and a operation The other end of the pivotal portion is respectively pressed against the pressure receiving portion of the crossbar When the normal step and the pressure receiving portion are pressed against the stepped portion, the normal step portion, and the brake step portion, the card convex portion and the toothed portion of the latching group are respectively separated from the latching hole and the card of the latching member The brake tooth portion of the brake shoe is disengaged from the gear tooth portion of the wheel body, so that the rotary seat rotates relative to the positioning seat, and the wheel body rotates relative to the rotary seat, when the orientation step and the pressure receiving portion are pressed The card protrusion of the card group is engaged in the card hole, so that the rotation seat cannot rotate relative to the positioning seat, and when the brake step is pressed against the pressure receiving portion, the card tooth of the card group The brake is formed on the tooth portion of the brake shoe, and the brake tooth portion of the brake shoe is engaged with the gear tooth portion of the wheel body, so that the wheel body cannot rotate relative to the rotary seat; and the pedal is released, and the brake can be reset after being set to The positioning seat presses the normal step of the operating pedal against the pressure receiving portion by stepping on. The multi-functional caster structure of claim 1, wherein the positioning seat further has a fixing portion fixed under the carrier. The multi-functional caster structure of claim 1, wherein a bearing is disposed between the pivot portion of the rotating base and the shaft portion of the positioning seat. The multi-functional caster structure of claim 1, wherein the longitudinal rod group comprises a first longitudinal rod and a second longitudinal rod, wherein the first longitudinal rod can extend the shaft portion to be axially movable The first end portion, a first joint portion opposite to the first end portion, and the first shoulder portion between the first end portion and the first joint portion, The second longitudinal rod has a second joint portion connected to the first joint portion, a second end portion opposite to the second joint portion and abutting the brake pressure receiving portion, and a second joint portion located at the second joint portion And between the second ends The second shoulder. The multi-purpose caster structure of claim 4, wherein the latch set comprises a washer, a first tooth, a second tooth, and a spring, wherein the washer is sleeved with the second bond And abutting against the second shoulder portion, the first tooth member sleeves the second joint portion, and has the toothed portion and an inner perforation, and the second tooth member sleeves the second joint And pressing against the gasket, and having a slot for inserting the first joint portion, a ring portion pressed by the first shoulder portion, and the card protrusion portion provided on a circumferential side of the ring portion, And a tooth portion that is fastened to the tooth hole in the first tooth member, and the spring is disposed between the first tooth member and the second tooth member ring portion. The multi-functional caster structure of claim 4, wherein the first end of the first longitudinal rod abuts against the cross-bar pushing portion. The multi-functional caster structure of claim 1, wherein the rotating base comprises a main body having the pivot portion, and a fixed base body is fixed to the main seat body and the brake shoe is pivoted and has a bearing The brake base member further has a brake elastic abutting portion connected to the brake pressure receiving portion, and the brake elastic abutting portion bears against the bearing portion, so that the brake pressure receiving portion is pushed against the longitudinal direction The state of the pole set up. The multi-functional caster structure of claim 1, wherein the release pedal has a disengagement pivot portion pivoted to the positioning seat, a release step portion at one end of the release pivot portion, and a release pivot a first releasing convex portion and a second releasing convex portion at the other end of the portion, the operating pedal further has a working step portion a first abutting surface on the same side and a second abutting surface on the same side as the orientation step, when the orientation step is pressed against the pressure receiving portion, the first abutting surface abuts against the first releasing convex portion, When the brake step is pressed against the pressure receiving portion, the second abutting surface abuts against the second releasing convex portion.