A tape control structure and a correction tape

Abstract

The present disclosure provides a tape control structure, which comprises a one-way transmission structure, and the transmission direction of the one-way transmission structure is set to drive one of a new tape gear (3) and a waste tape gear (4) to rotate in one direction when a pusher (1) is retracted, and the new tape gear (3) and the waste tape gear (4) cannot be driven to rotate by the pusher (1) when the pusher (1) is extended, and the tape is ejected by a correction head (2) and is in a tension state, and the new tape gear (3) and the waste tape gear (4) rotate in opposite directions when the pusher (1) is retracted, the new tape gear (3) drives a new tape core (5) to retract the tape, and the waste tape gear (4) and a waste tape core (6) relatively slip to keep the waste tape core (6) from releasing the tape. The present disclosure provides a new structure to achieve the purposes of extension and tensioning, and further provides a correction tape adopting the tape control structure.

Description

Technical Field

[0001] This invention relates to the field of stationery technology, specifically to a correction tape with a control structure. Background Technology

[0002] Currently, there is a type of telescopic correction tape with a telescopic correction head. When the correction head extends, it can push out the tape (also known as the film tape) for normal use. When the correction head retracts, it can retract the tape. Therefore, this type of telescopic correction tape requires telescopic control to achieve tape extension and retraction. In other words, a tape control structure is needed to complete the extension and retraction. However, in addition to extension and retraction, the tension of the tape after the correction head is extended must also be considered, and the function of retracting the tape must not be affected. This makes the structural design of the tape control structure very difficult.

[0003] Although some solutions have been proposed, such as the coating film transfer device disclosed in Chinese invention application CN1970315A, the applicant will propose a control structure, thereby proposing a new structure to achieve the purpose of stretching and tensioning, that is, a new technical approach. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and propose a belt control structure, thereby proposing a new structure to achieve the purpose of stretching and tensioning; it also proposes a correction belt that adopts the aforementioned belt control structure.

[0005] Compared with the prior art, the present invention proposes a belt control structure, including a pusher, a correction head, a new belt gear, a waste belt gear, a new belt core ring, and a waste belt core ring. The pusher drives the correction head to extend and retract. The new belt gear is connected to the new belt core ring, and the waste belt gear is connected to the waste belt core ring. The new belt gear and the waste belt gear directly or indirectly mesh to synchronize the release and retraction of the belt between the new belt core ring and the waste belt core ring. The invention also includes a one-way transmission structure. The transmission direction of the one-way transmission structure is set such that when the pusher retracts, the pusher drives at least one of the new belt gear and the waste belt gear to rotate in one direction via the one-way transmission structure. This one-way rotation is used for belt retraction, but the one-way transmission structure is set so as not to affect the direct or indirect meshing of the new belt gear and the waste belt gear to synchronize the release and retraction of the belt between the new belt core ring and the waste belt core ring.

[0006] The waste belt core ring is set to rotate only in the direction of belt take-up, and at least the waste belt gear and the waste belt core ring are slip-through transmission connections between the new belt core ring and the new belt gear, and between the waste belt gear and the waste belt core ring.

[0007] When the pusher extends, neither the new belt gear nor the waste belt gear will be driven to rotate by the pusher. Instead, the correction head pushes the belt out and releases the belt based on the slippery transmission connection. The belt is in a taut state. When the pusher retracts, the new belt gear and the waste belt gear rotate in opposite directions. The new belt gear drives the new belt core to retract the belt, while the waste belt gear and the waste belt core slip relative to each other to prevent the waste belt core from releasing the belt.

[0008] In some embodiments, the new belt core ring and the new belt gear are in a slippery drive connection, and when the pusher extends, the new belt core ring and the new belt gear slip relative to each other to release the belt.

[0009] In some embodiments, the slippery drive connection between the waste belt gear and the waste belt core is configured such that the belt is not released when the pusher extends, but is released by relative slippage between the new belt core and the new belt gear.

[0010] In some embodiments, the one-way transmission structure includes a transmission gear and a rack segment that can be elastically oscillating on the pusher. The transmission gear is meshed with the rack segment and is used to drive the waste belt gear or the new belt gear to rotate. When the pusher retracts, the rack segment pushes the transmission gear to rotate. When the pusher extends, the rack segment slips relative to the transmission gear.

[0011] In some embodiments, the pusher is provided with a cantilever that can swing elastically, the end of which is provided with a rack segment, the cantilever providing the elastic swing.

[0012] In some embodiments, when the pusher extends, the rack segment and the drive gear slip relative to each other but remain connected. Under normal use of the correction belt, the drive gear utilizes the elasticity of the rack segment to achieve free rotation relative to the rack segment.

[0013] In some embodiments, a mounting base is also included. The transmission gear, the waste belt gear, and the new belt gear are all rotatably connected to the mounting base. The transmission gear passes through the mounting base and is divided into an upper part and a lower part by the mounting base. The waste belt gear and the new belt gear are both located on the same side as the lower part. The lower part meshes with the waste belt gear or meshes with the new belt gear. The pusher is meshed with the teeth of the upper part. The pusher is used to drive the transmission gear to rotate via the upper part when the pusher is retracted. The rotation of the transmission gear drives the waste belt gear or the new belt gear to rotate.

[0014] In some embodiments, an intermediate transmission gear is further included, which has a first tooth and a second tooth sequentially arranged in the longitudinal direction. The first tooth forms a mating gap with the mounting base, and the rack segment of the pusher is inserted into the mating gap and meshes unidirectionally with the second tooth. The second tooth meshes with the upper tooth.

[0015] In some embodiments, the waste tape core ring is provided with a ratchet structure in the circumferential direction, which causes the waste tape core ring to rotate only in the winding direction.

[0016] In some embodiments, one end of the waste tape core ring is rotatably connected to a cover plate, the cover plate having a rotating engagement hole, the rotating engagement hole having circumferentially provided ratchet teeth that can elastically swing, and one end of the waste tape core ring having a ratchet wheel, the ratchet teeth engaging with the ratchet wheel.

[0017] In some embodiments, the pusher is further provided with a positioning structure for positioning the pusher when it moves to the extended position and the retracted position.

[0018] In some embodiments, the positioning structure includes a positioning recess on the side of the mating hole and a spring piece on the pusher. When the pusher extends / retracts along the mating hole, the positioning protrusion on the side of the spring piece can switch between different positioning recesses, and a certain positioning function can be achieved by the positioning protrusion and the positioning recess cooperating.

[0019] In some embodiments, a pushing part is further included, which is longitudinally connected to the top side of the pushing member. A spring is clamped between the pushing part and the pushing member to realize the installation of the spring. The spring can move elastically in the lateral direction to achieve the purpose of switching positioning between different positioning notches.

[0020] Compared with the prior art, the present invention has the following advantages when adopting the above structure: The technical solution disclosed herein includes a one-way transmission structure. When the pusher extends, neither the new belt gear nor the waste belt gear will be driven to rotate by the pusher. The correction head pushes the belt out, which requires a certain pushing force. At the same time, due to the slippage setting, the belt is pushed out by force and is in a tensioned state, thus achieving the tensioning purpose. Since the one-way transmission structure is set to not affect the direct or indirect meshing of the new belt gear and the waste belt gear to synchronize the release and take-up of the belt between the new belt core ring and the waste belt core ring, when using the correction belt, the direct or indirect meshing of the new belt gear and the waste belt gear will synchronize the release and take-up of the belt between the new belt core ring and the waste belt core ring, ensuring normal use.

[0021] When the pusher retracts, the one-way transmission structure comes into play. The pusher drives at least one of the new belt gear and the waste belt gear to rotate in one direction via the one-way transmission structure. Since the new belt gear and the waste belt gear are directly or indirectly meshed, both the new belt gear and the waste belt gear reverse. The reversal causes the new belt gear to drive the new belt core ring to retract the belt. The waste belt gear reverses when the waste belt core ring is set to rotate only in the direction of belt retraction, and the waste belt gear and the waste belt core ring are connected by a slippage transmission. In this case, the waste belt gear and the waste belt core ring slip relative to each other, and the waste belt core ring will not be driven, thus achieving the purpose of belt retraction.

[0022] Therefore, by repeating the process of the pusher driving the correction head to extend and retract, the purpose of extending and retracting the belt can be repeatedly achieved. At the same time, the belt is kept taut when it is extended, which is beneficial to the normal use of the correction belt.

[0023] Therefore, this disclosure proposes a new structure to achieve the purposes of stretching and tensioning.

[0024] It should be noted that, in addition to proposing a new structure to achieve the purpose of expansion and tension, this disclosure also has a further technical effect, namely, proposing a new structure to realize the new belt core coil winding. In this way, the unused new belt can be rewound back into the new belt roll, so that it will not be exposed to the outside, which is beneficial to protect the new belt. When it is needed, it can be pushed out and reused under the action of the pusher. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram mainly showing the new and waste tape core rings.

[0026] Figure 2 For a kind of Figure 1 A three-dimensional diagram with the cover added to the original design.

[0027] Figure 3 For a kind of Figure 2 A three-dimensional schematic diagram showing the addition of a new belt gear and a discarded belt gear to the original design.

[0028] Figure 4 This is a three-dimensional schematic diagram mainly showing a first rotating shaft with a new gear and a second rotating shaft with a discarded gear.

[0029] Figure 5 For a kind of Figure 3 A three-dimensional schematic diagram of the addition of transmission gears to the original design.

[0030] Figure 6 For a kind of Figure 5 A three-dimensional schematic diagram showing the addition of a mounting base, intermediate transmission gear, and pusher component to the original design.

[0031] Figure 7 For a kind of Figure 6 A three-dimensional schematic diagram with the addition of a propulsion unit.

[0032] Figure 8 This is a three-dimensional schematic diagram showing the intermediate transmission gear and the driving component from a low-angle perspective.

[0033] Figure 9 For a kind of Figure 8 A three-dimensional schematic diagram after removing the intermediate transmission gear and the pusher component from the original design.

[0034] Figure 10 This is a three-dimensional schematic diagram of a correction tape.

[0035] Explanation of reference numerals in the attached drawings: 1-Pushing component, 2-Correction head, 3-New belt gear, 4-Waste belt gear, 5-New belt core ring, 6-Waste belt core ring, 7-Belt roll, 8-First rotating shaft, 9-Second rotating shaft, 10-Transmission gear, 11-Cantilever, 12-Rack segment, 13-Mounting base, 14-Upper part, 15-Lower part, 16-Intermediate transmission gear, 17-First tooth, 18-Second tooth, 19-Ratchet, 20-Ratchet tooth, 21-Cover plate, 22-Outer shell, 23-Outlet, 24-First connecting hole, 25-Second connecting hole, 26-Elastic arm, 27-First spring, 28-Second spring, 29-Annular end face, 30-Barb, 31-Spring piece, 32-Positioning notch, 33-Pushing part, 34-Matching hole. Detailed Implementation

[0036] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The embodiments described below are merely examples, and other obvious variations will arise for those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0037] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0038] like Figures 1 to 9 As shown, a belt control structure is disclosed, including a pusher 1, a correction head 2, a new belt gear 3, a waste belt gear 4, a new belt core ring 5, and a waste belt core ring 6. The pusher 1 drives the correction head 2 to extend and retract. The new belt gear 3 is connected to the new belt core ring 5, and the waste belt gear 4 is connected to the waste belt core ring 6. The new belt gear 3 and the waste belt gear 4 directly or indirectly mesh to synchronize the release and retraction of the belt between the new belt core ring 5 and the waste belt core ring 6. The structure also includes a one-way transmission structure. The transmission direction of the one-way transmission structure is set such that when the pusher 1 retracts, the pusher 1 drives at least one of the new belt gear 3 and the waste belt gear 4 to rotate in one direction. This one-way rotation is used for belt retraction, but the one-way transmission structure is set so as not to affect the direct or indirect meshing of the new belt gear 3 and the waste belt gear 4 to synchronize the release and retraction of the belt between the new belt core ring 5 and the waste belt core ring 6.

[0039] The waste belt core ring 6 is configured to rotate only in the direction of belt take-up. At least the waste belt gear 4 and the waste belt core ring 6 are slippery transmission connections between the new belt core ring 5 and the new belt gear 3, and between the waste belt gear 4 and the waste belt core ring 6.

[0040] When the pusher 1 extends, neither the new belt gear 3 nor the waste belt gear 4 will be driven to rotate by the pusher 1. The correction head 2 pushes the belt out and releases the belt based on the slippery transmission connection. The belt is in a tensioned state. When the pusher 1 retracts, the new belt gear 3 and the waste belt gear 4 rotate in opposite directions. The new belt gear 3 drives the new belt core ring 5 to retract the belt, while the waste belt gear 4 and the waste belt core ring 6 slip relative to each other to keep the waste belt core ring 6 from releasing the belt.

[0041] In some embodiments, the new belt core ring 5 and the new belt gear 3 are in a slippery transmission connection. When the pusher 1 extends, the new belt core ring 5 and the new belt gear 3 slip relative to each other to release the belt. In this way, a new belt roll 7 is wound on the new belt core ring 5, and the belt roll 7 releases a new belt. Therefore, after each extension, when the user first uses the product, a new belt can appear at the correction head 2 as soon as possible, thereby completing the coating purpose and enhancing the user experience.

[0042] Furthermore, the slippery transmission connection between the waste belt gear 4 and the waste belt core ring 6 is configured such that the belt is not released when the pusher 1 extends, but is released by relative slippage between the new belt core ring 5 and the new belt gear 3. In this way, after each extension, a new belt is already prepared at the correction head 2 when the user first uses it, and the user can use it directly.

[0043] For unidirectional transmission structures, such as Figure 4 , 5 As shown in Figures 6 and 8, the unidirectional transmission structure includes a transmission gear 10 and a rack segment 12 that can oscillate elastically on the pusher 1. The transmission gear 10 and the rack segment 12 are meshed and connected. The transmission gear 10 is used to drive the waste belt gear 4 or the new belt gear 3 to rotate. When the pusher 1 retracts, the rack segment 12 pushes the transmission gear 10 to rotate. When the pusher 1 extends, the rack segment 12 slips relative to the transmission gear 10.

[0044] Furthermore, it also includes an intermediate transmission gear 16, which has a first tooth section 17 and a second tooth section 18 arranged sequentially along the longitudinal direction. The first tooth section 17 forms a mating gap with the mounting base 13. The rack segment 12 of the pusher 1 is inserted into the mating gap and meshes unidirectionally with the second tooth section 18. The second tooth section 18 meshes with the teeth of the upper part 14. In this way, on the one hand, it is convenient to arrange the relative positions of the transmission gear 10 and the pusher 1, so that the position of the pusher 1 is not limited by the position of the transmission gear 10. The transmission gear 10 mainly considers the mating needs of the new belt gear 3 and the waste belt gear 4. On the other hand, the mating gap is conducive to better extension and retraction of the rack segment 12 of the pusher 1, which is beneficial to reducing the amount of ore in the longitudinal direction.

[0045] In this example, the new belt gear 3 and the waste belt gear 4 mesh directly, and the transmission gears 10 are distributed accordingly. The new belt gear 3 and the waste belt gear 4 can also mesh indirectly, for example, by setting an intermediate gear or gear set to allow indirect transmission between them. This allows for synchronized release and retraction of the belt between the new belt core ring 5 and the waste belt core ring 6 when the correction belt is used, achieving the purpose of coating modification.

[0046] In some embodiments, such as Figure 5 As shown, the transmission gear 10 meshes with the new belt gear 3, and the waste belt gear 4 is also rotated due to the transmission connection between the new belt gear 3 and the waste belt gear 4.

[0047] In some embodiments, such as Figure 6 , 8 As shown, the pusher 1 is provided with a cantilever 11 that can swing elastically, and a rack segment 12 is provided at the end of the cantilever 11, which provides the aforementioned elastic swing. This structure is simple and the unidirectional transmission is reliable.

[0048] In some embodiments, when the pusher 1 extends, the rack segment 12 and the transmission gear 10 slip relative to each other but remain connected. Under normal use of the correction tape, the transmission gear 10 utilizes the elasticity of the rack segment 12 to achieve free rotation relative to the rack segment 12. This facilitates the control of the length of the pusher 1, because under normal use of the correction tape, the new belt gear 3 and the waste belt gear 4 need to be able to rotate normally. Therefore, there are different solutions. One is that when the pusher 1 extends, the rack segment 12 and the transmission gear 10 are completely separated from each other, thereby avoiding the influence of the rack segment 12. However, this separation requires a larger length and a longer stroke of the pusher 1 to ensure separation. The other is to maintain the connection, which causes the rack segment 12 and the transmission gear 10 to overlap in the length direction. Therefore, a shorter length and a shorter stroke of the pusher 1 are required.

[0049] As shown in the attached figure, the transmission gear 10 utilizes the elasticity of the rack segment 12 to achieve relative free rotation. This means that when the correction belt is in normal use, the new belt gear 3 and the waste belt gear 4 rotate normally. Therefore, the transmission gear 10 will be driven. Furthermore, the intermediate transmission gear 16 is driven by the transmission gear 10, and the intermediate transmission gear 16 rotates relative to the rack segment 12. Due to the unidirectional transmission setting, the rack segment 12 elastically oscillates to achieve the free rotation of the intermediate transmission gear 16.

[0050] The unidirectional transmission structure can also be other structures, and it is impossible to exhaustively list them all. Any unidirectional transmission structure that is applicable to this disclosure can be applied to this disclosure.

[0051] In some embodiments, such as Figure 4 ,6 As shown, the system also includes a mounting base 13. The transmission gear 10, the waste belt gear 4, and the new belt gear 3 are all rotatably connected to the mounting base 13. The transmission gear 10 passes through the mounting base 13 and is divided into an upper part 14 and a lower part 15 by the mounting base 13. The waste belt gear 4 and the new belt gear 3 are both located on the same side as the lower part 15. The lower part 15 meshes with the waste belt gear 4 or with the new belt gear 3. The pushing member 1 meshes with the teeth of the upper part 14. When the pushing member 1 retracts, it drives the transmission gear 10 to rotate via the upper part 14. The rotation of the transmission gear 10 then drives either the waste belt gear 4 or the new belt gear 3 to rotate. This design is simple and facilitates stable assembly and use.

[0052] For the waste tape core ring 6, the structure is set to rotate only in the direction of tape take-up, for example, Figure 1 , 2 As shown, the waste tape core ring 6 is provided with a ratchet 19 structure in the circumferential direction. This ratchet 19 structure allows the waste tape core ring 6 to rotate only in the winding direction. In this way, the structure is simple and reliable.

[0053] In some embodiments, such as Figure 4 , 6 As shown, one end of the waste tape core ring 6 is rotatably connected to a cover plate 21. The cover plate 21 is provided with a rotating engagement hole 34, and the rotating engagement hole 34 is provided with a ratchet 20 that can elastically swing around its circumference. One end of the waste tape core ring 6 is provided with a ratchet 19, and the ratchet 20 engages with the ratchet 19. This facilitates a simplified and compact structure.

[0054] To further simplify the structure, specifically, the rotating mating hole 34 is provided with an elastic arm 26 in the circumference, and the elastic arm 26 is provided with a ratchet 20 at one end located on one side of the ratchet 20.

[0055] The waste belt core ring 6 can be configured to rotate unidirectionally only in the direction of belt take-up, or it can be other structures, which cannot be exhaustively listed. Any unidirectional transmission structure that is applicable to this disclosure can be applied to this disclosure.

[0056] For slip-type transmission connections, existing technologies can be used. This disclosure proposes a new slip-type transmission connection structure, specifically, as follows: Figure 3 , 4As shown in Figure 5, the belt includes a first rotating shaft 8 on the new belt gear 3 and a second rotating shaft 9 on the waste belt gear 4. A first spring 27 is sleeved between the new belt gear 3 and the first rotating shaft 8. The first rotating shaft 8 has a barb 30 end, which is in contact with the annular end face 29 of the new belt gear 3 through friction. A second spring 28 is sleeved between the waste belt gear 4 and the second rotating shaft 9. The second rotating shaft 9 also has a barb 30 end, which is also in contact with the annular end face 29 of the waste belt gear 4 through friction. The different elasticities of the first spring 27 and the second spring 28 will result in different frictional forces in the contacting connection. Utilizing this feature, the new belt gear 3 and the first rotating shaft 8 can be connected in a slip-through transmission connection, as can the waste belt gear 4 and the second rotating shaft 9. The first rotating shaft 8 is inserted into the first connecting hole 24 of the new belt core ring 5. If the first rotating shaft 8 does not rotate, it cannot drive the new belt core ring 5 to rotate, thus achieving a slip-through transmission connection between the new belt gear 3 and the new belt core ring 5. Similarly, the second rotating shaft 9 is inserted into the second connecting hole 25 of the waste belt core ring 6. If the second rotating shaft 9 does not rotate, it cannot drive the waste belt core ring 6 to rotate, thus achieving a slip-through transmission connection between the waste belt gear 4 and the waste belt core ring 6.

[0057] Based on the above, by setting the first spring 27 and the second spring 28 with different elasticities, slippery transmission connections with different requirements can be easily realized. For example, the slippery transmission connection between the waste belt gear 4 and the waste belt core ring 6 is set so that the belt is not released when the pusher 1 extends, but is released by relative slippage between the new belt core ring 5 and the new belt gear 3.

[0058] In some embodiments, such as Figure 6 , 8 As shown in Figure 9, in order to reliably position the pusher 1 in the extended and retracted positions, a positioning structure is also included. There are many types of positioning structures. In this example, based on the consideration of simple and compact structure, a positioning recess 32 is provided on the side of the mating hole 34, and a spring piece 31 is provided on the pusher 1. When the pusher 1 extends / retracts along the mating hole 34, the positioning protrusion on the side of the spring piece 31 can switch between different positioning recesses 32. A certain positioning function is achieved by the positioning protrusion and the positioning recess 32 cooperating.

[0059] In order to longitudinally limit the pusher 1 within the mating hole 34, so that the pusher 1 will not disengage from the mating hole 34, as follows: Figure 6 , 7As shown, it also includes a pushing part 33, which is longitudinally connected to the top side of the pushing member 1. To further simplify the structure, a spring piece 31 is clamped between the pushing part 33 and the pushing member 1 to achieve the installation of the spring piece 31. The spring piece 31 can move laterally using elasticity, thereby achieving the purpose of switching positioning between different positioning recesses 32. That is, when the pushing member 1 is moved by force, the spring piece 31 will move inward, causing the positioning protrusion of the spring piece 31 to disengage from the positioning recess 32. With further movement, the positioning protrusion reaches the next positioning recess 32 and re-fits into the positioning recess 32 under the elastic action of the spring piece 31, and vice versa. Therefore, generally two positioning recesses 32 are sufficient.

[0060] This disclosure also proposes a correction tape, including a housing 22 with an outlet 23, and a tape control structure, wherein the correction head 2 of the tape control structure extends out through the outlet 23 for use. Thus, a novel retractable correction tape is proposed.

[0061] When understanding this disclosure, the above structure may be referred to other embodiments / appendices if necessary. Figure 1 And that is understood, so I will not elaborate further here.

[0062] The above description is merely an illustrative embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features, and principles described in the scope of protection of the present invention are included within the scope of protection of the present invention.

Claims

1. A belt control structure, comprising a pusher (1), a correction head (2), a new belt gear (3), a waste belt gear (4), a new belt core ring (5), and a waste belt core ring (6), wherein the pusher (1) drives the correction head (2) to extend and retract, the new belt gear (3) is drivenly connected to the new belt core ring (5), and the waste belt gear (4) is drivenly connected to the waste belt core ring (6), and the new belt gear (3) and the waste belt gear (4) directly or indirectly mesh to synchronize the release and retraction of the belt between the new belt core ring (5) and the waste belt core ring (6), characterized in that, It also includes a one-way transmission structure. The transmission direction of the one-way transmission structure is set so that when the pusher (1) is retracted, the pusher (1) drives at least one of the new belt gear (3) and the waste belt gear (4) to rotate in one direction. This one-way rotation is used to retract the belt. However, the one-way transmission structure is set so as not to affect the direct or indirect meshing of the new belt gear (3) and the waste belt gear (4) so ​​that the release and retraction of the belt between the new belt core ring (5) and the waste belt core ring (6) are synchronized. The waste belt core ring (6) is configured to rotate only in the direction of belt winding. At least the waste belt gear (4) and the waste belt core ring (6) are slip-through transmission connections between the new belt core ring (5) and the new belt gear (3) and between the waste belt gear (4) and the waste belt core ring (6). When the pusher (1) extends, neither the new belt gear (3) nor the waste belt gear (4) will be driven to rotate by the pusher (1), while the correction head (2) pushes the belt out. At the same time, the belt is released based on the slippery transmission connection, and the belt is in a tensioned state. When the pusher (1) retracts, both the new belt gear (3) and the waste belt gear (4) rotate in opposite directions. The new belt gear (3) drives the new belt core ring (5) to retract the belt, while the waste belt gear (4) and the waste belt core ring (6) slip relative to each other to keep the waste belt core ring (6) from releasing the belt.

2. The control structure as described in claim 1, characterized in that, The new belt core ring (5) and the new belt gear (3) are connected by a slippery transmission. When the pusher (1) extends, the new belt core ring (5) and the new belt gear (3) slip relative to each other to release the belt.

3. The control structure as described in claim 2, characterized in that, The slippery transmission connection between the waste belt gear (4) and the waste belt core ring (6) is configured such that the belt is not released when the pusher (1) extends, but is released by relative slippage between the new belt core ring (5) and the new belt gear (3).

4. The control structure as described in claim 1, characterized in that, The one-way transmission structure includes a transmission gear (10) and a rack segment (12) that can swing elastically on the pusher (1). The transmission gear (10) and the rack segment (12) are meshed and connected. The transmission gear (10) is used to drive the waste belt gear (4) or the new belt gear (3) to rotate. When the pusher (1) retracts, the rack segment (12) pushes the transmission gear (10) to rotate. When the pusher (1) extends, the rack segment (12) and the transmission gear (10) slip relative to each other.

5. The control structure as described in claim 4, characterized in that, The pusher (1) is provided with a cantilever (11) that can swing elastically, and the end of the cantilever (11) is provided with a rack segment (12) that provides the elastic swing.

6. The control structure as described in claim 4 or 5, characterized in that, When the pusher (1) extends, the rack segment (12) and the transmission gear (10) slip relative to each other, but remain connected. Under normal use of the correction belt, the transmission gear (10) uses the elasticity of the rack segment (12) to achieve free rotation relative to the rack segment (12).

7. The control structure as described in claim 1, 4, or 5, characterized in that, It also includes a mounting base (13), and the transmission gear (10), the waste belt gear (4), and the new belt gear (3) are rotatably connected to the mounting base (13). The transmission gear (10) passes through the mounting base (13) and is divided into an upper part (14) and a lower part (15) by the mounting base (13). The waste belt gear (4) and the new belt gear (3) are located on the same side as the lower part (15). The lower part (15) meshes with the waste belt gear (4) or meshes with the new belt gear (3). The pusher (1) meshes with the teeth of the upper part (14). The pusher (1) is used to drive the transmission gear (10) to rotate through the upper part (14) when the pusher (1) is retracted. The rotation of the transmission gear (10) drives the waste belt gear (4) or the new belt gear (3) to rotate.

8. The control structure as described in claim 7, characterized in that, It also includes an intermediate transmission gear (16), which has a first tooth (17) and a second tooth (18) arranged in sequence along the longitudinal direction. The first tooth (17) forms a mating gap with the mounting base (13). The rack segment (12) of the pusher (1) is inserted into the mating gap and meshes with the second tooth (18) in one direction. The second tooth (18) meshes with the teeth of the upper part (14).

9. The control structure as described in claim 1, characterized in that, The waste tape core ring (6) is provided with a ratchet (19) structure in the circumference, which makes the waste tape core ring (6) rotate only in the direction of tape take-up.

10. The control structure as described in claim 9, characterized in that, One end of the waste belt core ring (6) is rotatably connected to a cover plate (21). The cover plate (21) is provided with a rotating fitting hole (34). The rotating fitting hole (34) is provided with a ratchet (20) that can swing elastically in the circumference. One end of the waste belt core ring (6) is provided with a ratchet (19). The ratchet (20) engages with the ratchet (19).

11. The control structure as described in claim 1, characterized in that, The pusher (1) is also provided with a positioning structure, which is used to position the pusher (1) when it moves to the extended position and the retracted position.

12. The control structure as described in claim 1, characterized in that, The positioning structure includes a positioning recess (32) on the side of the mating hole (34) and a spring piece (31) on the pusher (1). When the pusher (1) extends / retracts along the mating hole (34), the positioning protrusion on the side of the spring piece (31) can switch between different positioning recesses (32). A certain positioning function is achieved by the positioning protrusion and the positioning recess (32) cooperating.

13. The control structure as described in claim 12, characterized in that, It also includes a pusher (33), which is longitudinally connected to the top side of the pusher (1). The spring (31) is clamped between the pusher (33) and the pusher (1) to realize the installation of the spring (31). The spring (31) can move elastically in the side to achieve the purpose of switching positioning between different positioning notches (32).

14. A correction tape, comprising a housing (22) having an outlet (23), characterized in that, It also includes the control structure as described in any one of claims 1 to 13, wherein the correction head (2) with the control structure extends out through the outlet (23) for use.

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