CN111196514B

CN111196514B - Roller structure

Info

Publication number: CN111196514B
Application number: CN201811372221.6A
Authority: CN
Inventors: 陈鼎钧; 锺明杰
Original assignee: Teco Image Systems Co Ltd
Current assignee: Teco Image Systems Co Ltd
Priority date: 2018-11-16
Filing date: 2018-11-16
Publication date: 2021-12-14
Anticipated expiration: 2038-11-16
Also published as: CN111196514A

Abstract

The invention provides a roller structure which comprises a frame body and a roller unit. The frame body is provided with accommodating seats which are arranged in a linear manner. The roller units are respectively detachably accommodated in the accommodating seats and are assembled and driven by the driving wheels, wherein each roller unit comprises a base part, an elastic part, a supporting part and a roller. The base assembly fixes the roller unit on the opposite containing seat, wherein the base has a first side edge. The elastic part is arranged on the base part and connected to the first side edge, wherein the elastic part is provided with a bending section, one end of the bending section extends from the first side edge of the base part and bends so as to provide elastic force in an assembling mode. The supporting part is arranged on the elastic part and connected to the other end of the bending section. The roller is pivoted to the supporting portion, wherein the roller is pushed and pressed by the driving wheel to drive the supporting portion to push and abut against the elastic portion, so that the supporting portion and the roller are driven to the base portion, and the roller rotates relative to the supporting portion.

Description

Roller structure

Technical Field

The present disclosure relates to roller structures, and particularly to a roller structure with elastic features.

Background

In the current multi-function printer or printer, the paper is held between the active wheel and the idle wheel, the rotation shaft of the idle wheel is pressed against the elastic sheet to press the idle wheel tightly on the active wheel, when the active wheel rotates, the friction force will drive the paper, and the friction force between the paper and the idle wheel will also make the idle wheel rotate to prevent the paper from rubbing against the idle wheel.

But is limited by the traditional process, and is currently on the market

The wheel adopts the design of the elastic sheet to provide elasticity. The elastic sheet is fixed on the frame body, and the idle wheel is clamped and limited by the elastic sheet and the limiting feature of the frame body so as to prevent the idle wheel from being separated. Because the spacing of idler is reached by the framework, when the equipment, whole framework drives the idler group and bulldozes the joint to rubber roller group, because bulldoze the joint force and can make the framework warp crooked, lead to for example that the idler that central deflection is big pushes away with rubber roller and bulldozes the joint insecurely, can't effectively convey the paper and cause the problem of card paper.

Therefore, how to develop a roller structure to solve the problems of the prior art is an urgent issue in the field.

Disclosure of Invention

The invention aims to provide a roller structure. The roller unit integrally constructs the roller rotating shaft on a base part through an elastic part, so that the roller unit can adjust the position of the roller rotating shaft according to practical application. When the roller unit is arranged in a frame, the roller rotating shaft in the roller unit is not limited by the arranged frame, and can receive different pushing and pressing forces to adjust the position of the roller rotating shaft relative to the frame, so that the roller is driven to rotate, and the operation efficiency is effectively improved.

Another objective of the present invention is to provide a roller structure, in which a plurality of roller units are detachably disposed on a frame. Because each roller unit integrally constructs the roller rotating shaft on a base part through an elastic part, the position of the roller rotating shaft of each roller unit can be respectively adjusted relative to the frame body. When the roller structure is applied to, for example, an idler roller of a sheet driving mechanism, the plurality of roller units are driven by receiving the urging force of the power shafts, respectively. Because each roller unit can respectively adjust the position of the roller rotating shaft relative to the frame body, the roller units can be driven by uniformly receiving the pushing pressure of the power shaft, and the aim of stably conveying paper is further achieved. Therefore, the roller structure can effectively avoid the problems that part of rollers cannot be attached to the power shaft due to the deformation influence of the frame body or the power shaft, and gaps or insufficient friction force are generated. Moreover, each roller unit adopts a detachable and integrated design, which is more beneficial to simplifying the assembly process, saving the cost and improving the operation efficiency.

To achieve the above objective, the present invention provides a roller structure. The roller structure comprises at least one roller unit. The roller unit includes a base, an elastic portion, a supporting portion and a roller. The base assembly fixes at least one roller unit on a containing seat, wherein the base is provided with a first side edge. The elastic part is arranged on the base part and connected to the first side edge of the base part, wherein the elastic part is provided with at least one bending section, and one end of the bending section extends from the first side edge of the base part and bends so as to provide elastic force in an assembling mode. The supporting part is arranged on the elastic part and connected to the other end of the at least one bending section. The roller is pivoted to the supporting portion, wherein the roller is pushed and pressed by a driving wheel to drive the supporting portion to push and abut against the elastic portion, so that the supporting portion and the roller are driven to the base portion, and the roller rotates relative to the supporting portion.

In order to achieve the above object, the present invention further provides a roller structure including at least one frame and a plurality of roller units. The at least one frame body is provided with a plurality of containing seats which are arranged on the at least one frame body and are arranged in a linear mode. The roller units are respectively and detachably accommodated in the accommodating seats and are driven by at least one driving wheel in assembly, wherein each roller unit comprises a base part, an elastic part, a supporting part and a roller. The base assembly fixes at least one roller unit on the corresponding containing seat, wherein the base is provided with a first side edge. The elastic part is arranged on the base part and connected to the first side edge of the base part, wherein the elastic part is provided with at least one bending section, and one end of the bending section extends from the first side edge of the base part and bends so as to provide elastic force in an assembling mode. The supporting part is arranged on the elastic part and connected to the other end of the at least one bending section. The roller is pivoted to the supporting portion, wherein the roller is pushed and pressed by at least one driving wheel to drive the supporting portion to push and abut against the elastic portion, so that the supporting portion and the roller are driven to the base portion, and the roller rotates relative to the supporting portion.

The invention has the beneficial effect that the invention provides a roller structure. The roller unit integrally constructs the roller rotating shaft on a base part through an elastic part, so that the roller unit can adjust the position of the roller rotating shaft according to practical application. When the roller unit is arranged in a frame, the roller rotating shaft in the roller unit is not limited by the arranged frame, and can receive different pushing and pressing forces to adjust the position of the roller rotating shaft relative to the frame, so that the roller is driven to rotate, and the operation efficiency is effectively improved.

Drawings

Fig. 1 discloses a structural exploded view of a roller structure and a roller combination of a driving wheel corresponding to a power shaft of the roller structure in a top view according to a first preferred embodiment of the invention.

Fig. 2 is an exploded view of the roller structure and the roller assembly of the driving wheel corresponding to the power shaft in the bottom view according to the first preferred embodiment of the present invention.

Fig. 3 is a perspective view of a roller structure and a roller combination of a driving wheel corresponding to a power shaft thereof according to a first preferred embodiment of the invention.

Fig. 4 is a perspective view of the roller structure and the roller combination of the driving wheels corresponding to the power shaft according to the first preferred embodiment of the invention.

Fig. 5 is a cross-sectional view of a roller assembly of the first preferred embodiment of the present invention and a driving wheel corresponding to the power shaft.

Fig. 6 is a side view of fig. 5.

Fig. 7 discloses a three-dimensional structure diagram of a roller unit of the roller structure of the invention.

Fig. 8 is a perspective view of the roller unit of the roller structure according to another embodiment of the present invention.

FIG. 9 is a schematic view of a roller unit of the roller structure according to an embodiment of the present invention.

FIG. 10 is a schematic view of a roller unit of the roller structure according to another embodiment of the present invention.

Fig. 11 is a perspective view of a roller assembly of a second preferred embodiment of the present invention and a roller assembly of a driving wheel corresponding to a power shaft.

Fig. 12 is a perspective view of a roller assembly of a second preferred embodiment of the present invention and a roller assembly of a driving wheel corresponding to a power shaft.

Fig. 13 discloses a front view of the roller structure and the roller assembly of the driving wheel corresponding to the power shaft according to the second preferred embodiment of the present invention.

Fig. 14 is an exploded view of the roller assembly of the second preferred embodiment of the present invention and the driving wheel of the power shaft.

The reference numbers are as follows:

1. 1a, 1b, 1c, 1 d: roller unit

11: base part

11 a: first side edge

11 b: second side edge

12: elastic part

12 a: bending section

13: supporting part

14: rotating shaft

15: roller wheel

16: fixing part

17: first buckle assembly

18: third buckle assembly

2. 2 a: frame body

20 a: the top surface

20 b: bottom surface

21. 21a, 21b, 21c, 21 d: containing seat

21': mounting opening

22: second buckle assembly

23: fixing groove

24: fourth buckle assembly

3. 3 a: power shaft

31. 31a, 31b, 31c, 31 d: driving wheel

9. 9 a: roller combination

A. A', A1, A2, A3, A4: axial center

D1, D2: distance between two adjacent plates

F1, F2: pressing force

Detailed Description

Some exemplary embodiments that embody features and advantages of the invention will be described in detail in the description that follows. As will be realized, the invention is capable of other and different modifications and its several details are capable of modifications in various obvious respects, all without departing from the invention, and the description and drawings are to be regarded as illustrative in nature, and not as restrictive.

Fig. 1 discloses a structural exploded view of a roller structure and a roller combination of a driving wheel corresponding to a power shaft of the roller structure in a top view according to a first preferred embodiment of the invention. Fig. 2 is an exploded view of the roller structure and the roller assembly of the driving wheel corresponding to the power shaft in the bottom view according to the first preferred embodiment of the present invention. Fig. 3 is a perspective view of a roller structure and a roller combination of a driving wheel corresponding to a power shaft thereof according to a first preferred embodiment of the invention. Fig. 4 is a perspective view of the roller structure and the roller combination of the driving wheels corresponding to the power shaft according to the first preferred embodiment of the invention. Fig. 5 is a cross-sectional view of a roller assembly of the first preferred embodiment of the present invention and a driving wheel corresponding to the power shaft. Fig. 6 is a side view of fig. 5. In the present embodiment, the roller structure can be applied to a roller structure for conveying a portion of paper, for example, and includes at least a roller unit 1 and a frame 2, wherein the roller unit 1 is assembled and disposed on the frame 2. The frame 2 includes a top surface 20a, a bottom surface 20b and at least one accommodating seat 21, the accommodating seat 21 is configured to accommodate the roller unit 1, and can penetrate through the top surface 20a and the bottom surface 20b, but the form of the accommodating seat is not limited to the essential features of the present invention, which will be described first. In the present embodiment, the roller unit 1 includes a base 11, an elastic portion 12, a supporting portion 13 and a roller 15. The base 11 is assembled to fix at least one roller unit 1 to a housing seat 21, for example, of the frame 2. In the present embodiment, the base 11 has a first side edge 11a and a second side edge 11b, wherein the first side edge 11a and the second side edge 11b are opposite to each other. The elastic portion 12 is disposed on the base portion 11 and connected to the first side edge 11a of the base portion 11, wherein the elastic portion 12 has at least one bending section 12a, one end of which extends and bends from the first side edge 11a of the base portion 11 to provide an elastic force. In this embodiment, the at least one bending section 12a is further bent in a C-shape or S-shape, for example, to receive the deformation to generate the elastic force. In addition, the supporting portion 13 is disposed on the elastic portion 12 and connected to the other end of the at least one bending section 12 a. The roller 15 is pivotally connected to the supporting portion 13 via a shaft 14. In the present embodiment, the rotating shaft 14 is further exposed to the accommodating seat 21 or kept not contacting the frame 2. In this embodiment, the roller unit 1 is configured as an idler wheel, for example, when the roller 15 of the roller unit 1 is pushed by the driving wheel 31 of the power shaft 3, the roller 13 is forced to drive the supporting portion 13 to push the elastic portion 12, so as to oppose the elastic force generated by the elastic portion 12, so that the supporting portion 13 and the rotating shaft 14 of the roller 15 are further driven to the base portion 11, and the roller 15 further rotates relative to the supporting portion 13 with the axis a of the rotating shaft 14 as the center. In the present embodiment, the base 11, the elastic portion 12, the supporting portion 13, the shaft 14, and the roller 15 of the roller unit 1 may be further integrally formed by, for example, a three-dimensional lamination process, but the invention is not limited thereto. It should be noted that the rotating shaft 14 of the roller 15 is driven toward the base 11 and still remains exposed from the accommodating seat 21 and does not contact the frame 2. Therefore, the roller unit 1 can adjust the position of the rotating shaft 14 relative to the base 11, i.e. relative to the frame 2, according to the pushing of the driving wheel 31. Because the rotating shaft 14 of the roller unit 1 is not limited by the installed frame 2, the position of the rotating shaft 14 of the roller unit 1 can be adjusted relative to the frame 2 by receiving different pushing and pressing forces of the driving wheel 31 on the power shaft 3, and the roller 14 is driven to rotate at the same time, thereby effectively improving the operation efficiency. Of course, in other embodiments, the roller unit 1 can also be directly applied, and the distance between the rotating shaft 14 and the base 11 is adjusted according to the pushing of the driving wheel 31, which is not limited by the invention. The actuating mechanism of the roller unit 1 will be described in detail later.

Fig. 7 discloses a three-dimensional structure diagram of a roller unit of the roller structure of the invention. Fig. 8 is a perspective view of the roller unit of the roller structure according to another embodiment of the present invention. FIG. 9 is a schematic view of a roller unit of the roller structure according to an embodiment of the present invention. FIG. 10 is a schematic view of a roller unit of the roller structure according to another embodiment of the present invention. Refer to fig. 1 to 10. In the present embodiment, the integrated roller unit 1 at least has a base 11, an elastic portion 12, a supporting portion 13, a rotating shaft 14, a roller 15, and the like. When the roller unit 1 is configured as an idle wheel and is pushed by a driving wheel 31 on a power shaft 3, for example, the positions of the supporting portion 13, the rotating shaft 14 and the roller 15 relative to the base portion 11 can be further adjusted due to the buffering of the elastic portion 12. For example, the driving wheel 31 generates a small pressing force F1 by a short distance displacement, and the axis a of the rotating shaft 14 of the roller 15 of the roller unit 1 and the bottom of the base 11 maintain a long distance D1 against the elastic force generated by the slight deformation of the elastic part 12, and the roller 15 is driven to rotate by the rotation of the driving wheel 31 at this position, as shown in fig. 9. For example, when the driving wheel 31 generates a large pressing force F2 by a long-distance displacement, the axis a' of the rotating shaft 14 of the roller 15 of the roller unit 1 and the bottom of the base 11 maintain a short distance D2 against the elastic force generated by the elastic part 12 deforming significantly, and the driving wheel 31 rotates at this position to drive the roller 15 to roll, as shown in fig. 10. In other words, the integrated roller unit 1 of the present invention can receive different pushing forces generated by the driving wheel 31 due to different displacement strokes, and adjust the positions of the roller 15 and the rotating shaft 14, i.e. the position of the axis a or a', relative to the base 11, so as to drive the roller 15 to rotate at different positions, thereby effectively improving the operation efficiency.

Please refer to fig. 1 to 6. It should be noted that the integrated roller unit 1 of the present invention can be matched with various frame bodies 2 or directly configured as a roller structure. In the embodiment, only a single roller unit 1 and a single frame 2 are illustrated, but the invention is not limited thereto. In order to detachably mount the integrated roller unit 1 on the frame 2, the frame 2 may be provided with a receiving seat 21, for example, penetrating the top surface 20a and the bottom surface 20 b. In the present embodiment, the accommodating seat 21 has a mounting opening 21 'disposed on the bottom surface 20b of the frame 2, and is configured to allow the roller unit 1 to pass through the mounting opening 21' from bottom to top and be detachably accommodated in the accommodating seat 21. In addition, the roller unit 1 further includes a fixing portion 16 connected to the second side edge 11b of the base portion 11. The frame 2 includes a fixing groove 23 adjacent to a side edge of the accommodating base 21. Wherein the fixing portion 16 is opposite to the fixing groove 23, when the roller unit 1 is placed in the containing seat 21, the fixing portion 16 and the fixing groove 23 are engaged with each other, so that the roller unit 1 is fixed on the containing seat 21 of the frame body 2. In addition, in the embodiment, the fixing portion 16 has a first snap component 17, such as a convex portion, disposed on one side of the fixing portion 16, and extending from one side edge of the fixing portion 16 toward the base portion 11 to protrude. The accommodating seat 21 of the frame 2 has a second engaging member 22 opposite to the first engaging member 17, such as an opening, for communicating the accommodating seat 21 and the fixing groove 23. When the roller unit 1 is placed in the receiving seat 21 and the fixing portion 16 and the fixing groove 23 are engaged with each other, the first locking component 17 and the second locking component 22 are engaged with each other, so that the roller unit 1 is further effectively fixed on the receiving seat 21. The fixing portion 16 further has a third engaging element 18, such as a convex portion, and extends from a side edge of the fixing portion 16 in a direction away from the base portion 11 with respect to the first engaging element 17. The frame 2 has a fourth locking component 24, such as a slot, and is disposed on a sidewall of the fixing groove 23 away from the accommodating seat 21 relative to the second locking component 22. When the roller unit 1 is placed in the accommodating seat 21 and the fixing portion 16 and the fixing groove 23 are engaged with each other, the third locking component 18 and the fourth locking component 24 are engaged with each other, so that the roller unit 1 is further effectively fixed on the accommodating seat 21. Of course, the types, the number and the arrangement positions of the first buckle assembly 17, the second buckle assembly 22, the third buckle assembly 18 and the fourth buckle assembly 24 can be adjusted according to the actual application requirements, and the present invention is not limited thereto, and thus, the description thereof is omitted.

Fig. 11 is a perspective view of a roller assembly of a second preferred embodiment of the present invention and a roller assembly of a driving wheel corresponding to a power shaft. Fig. 12 is a perspective view of a roller assembly of a second preferred embodiment of the present invention and a roller assembly of a driving wheel corresponding to a power shaft. Fig. 13 discloses a front view of the roller structure and the roller assembly of the driving wheel corresponding to the power shaft according to the second preferred embodiment of the present invention. Fig. 14 is an exploded view of the roller assembly of the second preferred embodiment of the present invention and the driving wheel of the power shaft. In the present embodiment, the roller assembly 9a is similar to the roller assembly 9 shown in fig. 1 to 6, and the same component numbers represent the same components, structures and functions, which are not described herein again. In the present embodiment, the roller assembly 9a can be driven by a power shaft 3a, for example. The roller structure includes at least one frame 2a and a plurality of

roller units

1a, 1b, 1c, 1 d. The at least one frame body 2a has a plurality of

accommodating seats

21a, 21b, 21c, 21d, and is disposed on the at least one frame body 2a and arranged in a linear manner, for example. In the present embodiment, the

roller units

1a, 1b, 1c, and 1d have the same structure, are respectively detachably accommodated in the

accommodating seats

21a, 21b, 21c, and 21d, and are respectively driven by the driving

wheels

31a, 31b, 31c, and 31d corresponding to the power shaft 3 a. It should be noted that each of the

roller units

1a, 1b, 1c, and 1d is the same as the roller units in the previous embodiments, and has the same structure, and after the

accommodating seats

21a, 21b, 21c, and 21d are respectively placed, different axes a1, a2, A3, and a4 can be respectively configured on the surface 20a of the frame 2 a. Since the

roller units

1a, 1b, 1c, and 1d are all integrated and independent structures, the positions of the axes a1, a2, A3, and a4 can be adjusted according to the pressing of the

corresponding driving wheels

31a, 31b, 31c, and 31d, respectively. For example, when the

driving wheels

31a, 31b, 31c, 31d on the power shaft 3a cannot be configured on the same plane due to manufacturing tolerance or deformation in long-term use, but the power shaft 3a drives the

driving wheels

31a, 31b, 31c, 31d to press the

roller units

1a, 1b, 1c, 1d, respectively, the

pressing roller units

1a, 1b, 1c, 1d can adjust the positions of the axes a1, a2, A3, a4, respectively, so that the

pressing roller units

1a, 1b, 1c, 1d can be effectively attached to the

corresponding driving wheels

31a, 31b, 31c, 31d, respectively, and can uniformly receive the pressing force of the

corresponding driving wheels

31a, 31b, 31c, 31d on the power shaft 3a to drive, thereby achieving the purpose of stably conveying paper, and effectively avoiding the influence of deformation of the power shaft 3a to make part of the roller units 1a be stably conveyed, 1b, 1c, 1d cannot be bonded to the

driving wheels

31a, 31b, 31c, 31d of the corresponding 1 on the power shaft, and there is a problem that a gap or a friction force is insufficient. In addition, for example, when the frame body 2a cannot make the plurality of

accommodating seats

21a, 21b, 21c, 21d configured on the same plane due to process tolerance or long-term use deformation, the

roller units

1a, 1b, 1c, 1d are accommodated in the plurality of

accommodating seats

21a, 21b, 21c, 21d, respectively, and then the axes a1, a2, A3, a4 exposed on the top surface 20a of the frame body 2a have different height differences. However, when the

driving wheels

31a, 31b, 31c, 31d are driven by the power shaft 3a to press the

roller units

1a, 1b, 1c, 1d, the positions of the axes a1, a2, A3, a4 of the

pressing roller units

1a, 1b, 1c, 1d are adjusted to make the

pressing roller units

1a, 1b, 1c, 1d effectively contact with the

corresponding driving wheels

31a, 31b, 31c, 31d, and can be driven by uniformly receiving the pressing force of the

corresponding driving wheels

31a, 31b, 31c, 31d on the power shaft 3a, so as to achieve the purpose of stably conveying the paper, and effectively avoid the problem that the gaps or insufficient friction force is generated because some of the deformation of the pivot body 2a to make the

roller units

1a, 1b, 1c, 1d not contact with the

corresponding driving wheels

31a, 31b, 31c, 31d on the power shaft.

In addition, it should be noted that, in the present embodiment, each roller unit 1 is further designed to be detachable and integrated, and thus, the detailed description thereof is omitted. After the

roller units

1a, 1b, 1c, and 1d are respectively placed in the

accommodation seats

21a, 21b, 21c, and 21d of the frame 2a, the positions of the axes a1, a2, A3, and a4 can be adjusted independently of each other by pressing the

driving wheels

31a, 31b, 31c, and 31 d. When any one of the

roller units

1a, 1b, 1c and 1d fails, the replacement can be simply completed, so that the cost is saved, and the application efficiency of the roller structure is further improved. Of course, the manner in which the

roller units

1a, 1b, 1c, and 1d are disposed on the

accommodating seats

21a, 21b, 21c, and 21d of the frame 2a is not a limitation to the essential features of the present invention, and any manner of fixing the

roller units

1a, 1b, 1c, and 1d by the base 11 and maintaining the axes a1, a2, A3, and a4 exposed to the accommodating seats by being supported by the elastic parts 12 is applicable to the present invention. The present invention is not limited thereto and will not be described in detail.

In summary, the present invention provides a roller structure. The roller unit integrally constructs the roller rotating shaft on a base part through an elastic part, so that the roller unit can adjust the position of the roller rotating shaft according to practical application. When the roller unit is arranged in a frame, the roller rotating shaft in the roller unit is not limited by the arranged frame, and can receive different pushing and pressing forces to adjust the position of the roller rotating shaft relative to the frame, so that the roller is driven to rotate, and the operation efficiency is effectively improved. In addition, the roller units are detachably arranged on a frame body. Because each roller unit integrally constructs the roller rotating shaft on a base part through an elastic part, the position of the roller rotating shaft of each roller unit can be respectively adjusted relative to the frame body. When the roller structure is applied to, for example, an idler roller of a sheet driving mechanism, the plurality of roller units are driven by receiving the urging force of the power shafts, respectively. Because each roller unit can respectively adjust the position of the roller rotating shaft relative to the frame body, the roller units can be driven by uniformly receiving the pushing pressure of the driving wheel on the power shaft, and further the aim of stably conveying paper is achieved. Therefore, the roller structure can effectively avoid the problems that part of rollers cannot be attached to the power shaft due to the deformation influence of the frame body or the power shaft, and gaps or insufficient friction force are generated. Moreover, each roller unit adopts a detachable and integrated design, which is more beneficial to simplifying the assembly process, saving the cost and improving the operation efficiency.

The present invention may be modified in various ways by those skilled in the art without departing from the scope of the appended claims.

Claims

1. A roller structure comprising:

at least one roller unit, comprising:

a base part, which is assembled to fix the roller unit on a containing seat, wherein the base part is provided with a first side edge;

an elastic part arranged on the base part and connected to the first side edge of the base part, wherein the elastic part is provided with at least one bending section, one end of the bending section extends from the first side edge of the base part and bends so as to provide an elastic force in an assembling way, and the at least one bending section is bent in an S shape;

a supporting part arranged on the elastic part and connected to the other end of the at least one bending section; and

and the roller comprises a rotating shaft which is pivoted to the supporting part and is kept exposed out of the accommodating seat, wherein the roller is pushed and pressed by a driving wheel to drive the supporting part to push and abut against the elastic part, so that the supporting part and the roller are driven to the first side edge of the base part, and the roller rotates relative to the supporting part.

2. The roller structure of claim 1, wherein the base further includes a second side edge opposite the first side edge, and wherein the roller unit includes a securing portion coupled to the second side edge of the base and configured to engage a securing slot adjacent the receptacle to secure the roller unit to the receptacle.

3. The roller structure according to claim 2, wherein the fixing portion has a first locking member, the receiving base has a second locking member disposed between the receiving base and the fixing groove, and the first locking member is engaged with the second locking member when the fixing portion is engaged with the fixing groove.

4. The roller structure according to claim 3, wherein the first locking member is a protrusion extending from a side edge of the fixing portion toward the base, and the second locking member is an opening communicating the receiving seat and the fixing groove.

5. The roller structure according to claim 2, wherein the fixing portion has a third locking member, the fixing groove has a fourth locking member, the third locking member and the fourth locking member are opposite to each other, and the third locking member and the fourth locking member are engaged when the fixing portion is engaged with the fixing groove.

6. The roller structure according to claim 5, wherein the third locking member is a protrusion extending from a side edge of the fixing portion toward the base, and the fourth locking member is a slot disposed on a side wall of the fixing groove.

7. A roller structure comprising:

at least one frame body, which is provided with a plurality of containing seats and is arranged on the at least one frame body in a linear arrangement; and

a plurality of roller units detachably accommodated in the plurality of accommodating seats respectively and assembled by being driven by at least one driving wheel, wherein each roller unit comprises:

a base part, which is assembled to fix the at least one roller unit on the corresponding accommodating seat, wherein the base part is provided with a first side edge;

and the roller comprises a rotating shaft which is pivoted to the supporting part and is kept exposed out of the accommodating seat, wherein the roller is pushed and pressed by the at least one driving wheel to drive the supporting part to push and abut against the elastic part, so that the supporting part and the roller are driven to the first side edge of the base part, and the roller rotates relative to the supporting part.

8. The roller structure according to claim 7, wherein the shaft is exposed from the top surface of the frame.

9. The roller structure according to claim 7, wherein each of the accommodating seats has a mounting opening disposed on a bottom surface of the at least one frame body for allowing the corresponding roller unit to pass through the mounting opening and be detachably accommodated in the accommodating seat.

10. The roller structure of claim 7, wherein the base further includes a second side edge opposite the first side edge, and wherein the roller unit includes a securing portion coupled to the second side edge of the base and configured to engage a securing slot adjacent the receptacle to secure the roller unit to the receptacle.

11. The roller structure according to claim 10, wherein the fixing portion has a first locking member, the receiving base has a second locking member disposed between the receiving base and the fixing groove, and the first locking member is engaged with the second locking member when the fixing portion is engaged with the fixing groove.

12. The roller structure according to claim 11, wherein the first locking member is a protrusion extending from a side edge of the fixing portion toward the base, and the second locking member is an opening communicating between the receiving seat and the fixing groove.

13. The roller structure according to claim 10, wherein the fixing portion has a third locking member, the fixing groove has a fourth locking member, the third locking member and the fourth locking member are opposite to each other, and the third locking member and the fourth locking member are engaged when the fixing portion is engaged with the fixing groove.

14. The roller structure according to claim 13, wherein the third locking member is a protrusion extending from a side edge of the fixing portion in a direction away from the base, and the fourth locking member is a slot disposed on a side wall of the fixing groove.