Rotation stopping mechanism with simple structure and correction tape

Abstract

The rotation stopping mechanism comprises a large gear and a tray, the tray is rotationally connected with a shell, a groove is formed in the center of the large gear, the tray is embedded into the groove, a resistance rotation stopping part is arranged on the side wall of the groove, a first pawl is arranged on the side wall of the tray, and a second pawl is arranged on the side wall of the first pawl. And the first pawl is in contact with the resistance rotation stopping part. Compared with the prior art, the first pawl and the resistance rotation stopping part are matched with each other, the tray can drive the large gear to rotate together when supplying a film belt in a rotating mode, the small gear is driven to rotate through the transmission gear, the small gear rotates to wind the film belt, the structure is simpler, the tray and the large gear are matched more firmly, and the film belt can be wound more stably. And disassembly and assembly are more convenient and faster.

Description

Technical Field

[0001] This utility model relates to the field of correction tape technology, specifically to a simple anti-rotation mechanism and correction tape. Background Technology

[0002] Correction tape is a common stationery item used to cover up mistakes and provide copy correction. There are many types of products on the market, such as disposable film applicators that can be discarded after use, or replaceable film applicators that retain the casing and can be reused with replacement clips. Nowadays, most products are replaceable, in order to reduce the proportion of waste materials in response to environmental protection.

[0003] Patent publication number CN113942869A discloses a film applicator for easy replacement of fillers. When opening for replacement, the applicator head can be moved back and forth to completely detach from the film tape, avoiding snagging and improving convenience. However, in this design, the first drive shaft and the supply toothed disc are driven by a spring, making the installation structure more complex. The spring is prone to loss during disassembly and assembly, causing inconvenience in using the correction tape. Furthermore, the supply toothed disc lacks sufficient resistance during tape feeding, which can lead to excessive tape feeding and waste.

[0004] In view of this, the applicant conducted in-depth research on the above-mentioned issues, which led to this case. Summary of the Invention

[0005] The main objective of this invention is to provide a simple anti-rotation mechanism and correction belt that can effectively solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the solution of this utility model is:

[0007] A simple anti-rotation mechanism includes a large gear and a tray. The tray is rotatably connected to the housing. The large gear has a groove at its center, and the tray is embedded in the groove. The side wall of the groove has a resistance anti-rotation part, and the side wall of the tray has a first pawl. The first pawl is in contact with the resistance anti-rotation part.

[0008] Furthermore, the first pawl includes an arc-shaped connecting portion, one end of which is connected to the tray, and the other end of which is provided with a pawl portion protruding outward, the pawl portion being in contact with the resistance anti-rotation portion.

[0009] Furthermore, the resistance anti-rotation part is an arrangement of anti-rotation teeth, each anti-rotation tooth including a first inclined surface and a first abutting surface connected at intervals, the pawl part having a second inclined surface corresponding to the first inclined surface, and the pawl part having a second abutting surface corresponding to the first abutting surface.

[0010] Furthermore, the resistance anti-rotation part consists of arc-shaped protrusions and arc-shaped concave parts arranged at intervals.

[0011] Furthermore, the tray has a first drive shaft at its center, and a positioning protrusion is provided on the side wall of the first drive shaft.

[0012] Furthermore, the groove has a through hole in the center, the large gear has a slot on the opposite side of the groove, one end of the first drive shaft passes through the through hole, and the end of the first drive shaft has a locking tooth that engages with the slot.

[0013] Furthermore, the bottom of the groove is provided with an annular guide groove, and the bottom surface of the tray is provided with a guide block, which slides in conjunction with the guide groove.

[0014] Furthermore, it also includes a transmission gear and a pinion that are rotatably connected to the housing. The end face of the pinion is provided with a positioning plate, and the positioning plate is provided with a second transmission shaft. The pinion and the transmission gear mesh with each other for transmission, and the transmission gear and the large gear mesh with each other for transmission.

[0015] Furthermore, the large gear is provided with a clearance groove, and a second ratchet is provided in the clearance groove.

[0016] A correction belt for the aforementioned anti-rotation mechanism further includes a housing, wherein the housing has a cavity for accommodating the anti-rotation mechanism, and the cavity has a first shaft post, a second shaft post, and a third shaft post. A first transmission shaft is sleeved on the first shaft post, a transmission gear is sleeved on the second shaft post, and the second transmission shaft is sleeved on the third shaft post.

[0017] Compared with existing technologies, the advantages of this new invention are that, through the cooperation of the first pawl and the resistance anti-rotation part, the rotation of the tray to supply the film belt drives the large gear to rotate as well. This, in turn, drives the small gear to rotate, causing the small gear to wind the film belt. The structure is simpler, the fit between the tray and the large gear is more secure, and assembly and disassembly are more convenient and quicker. Furthermore, during the rotation of the large gear, the first pawl contacts the surface of the resistance anti-rotation part, which pushes the first pawl inward, creating an interactive resistance force between the large gear and the first pawl. This force increases the resistance to the rotation of the large gear, producing a slightly stuck feel during use and preventing the large gear from rotating too fast and feeding too much film belt, thus preventing film belt waste. In addition, the second pawl also serves to stop the rotation of the large gear, preventing it from rotating in the opposite direction. Attached Figure Description

[0018] Figure 1 This is a perspective view of the external structure of the anti-rotation mechanism in the first embodiment.

[0019] Figure 2 This is a schematic diagram of a partial cross-sectional structure of the correction band.

[0020] Figure 3 This is a three-dimensional view of the external structure of the large gear.

[0021] Figure 4 This is a three-dimensional view of another external structure of the large gear.

[0022] Figure 5 This is a three-dimensional view of the pallet's external structure.

[0023] Figure 6 This is a three-dimensional view of another external structure of the tray.

[0024] Figure 7 This is a perspective view of the external structure of the anti-rotation mechanism in the second embodiment.

[0025] In the figure: large gear 1, groove 11, anti-rotation tooth 12, through hole 13, slot 14, guide groove 15, clearance groove 16, second pawl 17, tray 2, first pawl 21, arc-shaped connecting part 211, pawl part 212, guide block 22, first inclined surface 31, first abutting surface 32, second inclined surface 33, second abutting surface 34, first drive shaft 4, positioning protrusion 41, drive gear 5, pinion 6, positioning plate 61, second drive shaft 62, housing 7, first shaft post 71, second shaft post 72, third shaft post 73, arc-shaped protrusion 81, arc-shaped concave part 82. Detailed Implementation

[0026] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0027] like Figure 1-7 As shown, a simple anti-rotation mechanism includes a large gear 1 and a tray 2. The tray 2 is rotatably connected to the housing 7. The large gear 1 has a groove 11 at its center, and the tray 2 is fitted into the groove 11. The side wall of the groove 11 has a resistance anti-rotation part, and the side wall of the tray 2 has a first pawl 21. The first pawl 21 includes an arc-shaped connecting part 211. One end of the arc-shaped connecting part 211 is connected to the tray 2, and the other end of the arc-shaped connecting part 211 has a pawl part 212 protruding outward. The pawl part 212 contacts the resistance anti-rotation part. The arc-shaped connecting part 211 is arranged around the center of the tray 2, which allows the pawl part 212 to have better elasticity and a tighter fit with the anti-rotation gear 12.

[0028] In the first embodiment of this utility model, the resistance anti-rotation part is a anti-rotation tooth 12, which includes a first inclined surface 31 and a first abutting surface 32 spaced apart. A pawl part 212 has a second inclined surface 33 corresponding to the first inclined surface 31, and a second abutting surface 34 corresponding to the first abutting surface 32. Thus, when the correction tape is applied, the tape pulls the tray 2 to rotate, and the second abutting surface 34 engages with the first abutting surface 32, thereby pushing the large gear 1 to rotate in the same direction. After application, the reverse force generated by the tray 2 may cause it to flip. At this time, the second inclined surface 33 and the first inclined surface 31 cooperate, allowing the tray 2 to rotate in the opposite direction relative to the large gear 1, thereby releasing excess force.

[0029] In a second embodiment of this utility model, the resistance anti-rotation part consists of arc-shaped protrusions 81 and arc-shaped concave parts 82 arranged at intervals. This results in a wavy curved surface on the side of the resistance anti-rotation part. During the rotation of the large gear 1, the pawl 212 alternately contacts the arc-shaped protrusions 81 and arc-shaped concave parts 82. When the pawl 212 contacts the arc-shaped protrusion 81, it pushes inward, generating a pushing force, thereby increasing the resistance to the large gear 1. This allows the large gear 1 to produce a stopping sensation during use, preventing it from rotating too fast and conveying too much membrane belt, thus preventing membrane belt waste. Furthermore, when the large gear 1 rotates in the reverse direction, the second pushing surface 34 can also increase the resistance, achieving the anti-rotation effect.

[0030] Specifically, a first drive shaft 4 is located at the center of the tray 2. Positioning protrusions 41 are provided on the side wall of the first drive shaft 4. The first drive shaft 4 is mainly used to cooperate with the housing 7, making the rotation of the tray 2 more stable and smooth. The mold core of the membrane belt is fitted onto the first drive shaft 4. The positioning protrusions 41 provide positioning for the mold core, allowing it to rotate and drive the first drive shaft 4 to rotate. A through hole 13 is located at the center of the groove 11. A slot 14 is provided on the opposite side of the groove 11. One end of the first drive shaft 4 passes through the through hole 13, and a retaining tooth 42 is provided at the end of the first drive shaft 4 passing through the through hole 13. The retaining tooth 42 engages with the slot 14 after passing through the through hole 13. This structure makes the fit between the large gear 1 and the first drive shaft 4 more secure, and also makes disassembly and assembly of the first drive shaft 4 and the large gear 1 more convenient. More preferably, the bottom of the groove 11 is provided with an annular guide groove 15, and the bottom surface of the tray 2 is provided with a guide block 22. The guide block 22 slides with the guide groove 15, so that the large gear 1 and the tray 2 can rotate more smoothly and the fit is more secure.

[0031] In this embodiment, a transmission gear 5 and a pinion 6 are rotatably connected to the housing 7. The end face of the pinion 6 is provided with a positioning disk 61, and a second transmission shaft 62 is mounted on the positioning disk 61. The second transmission shaft 62 is rotatably connected to the housing 7. The wound film strip is wound around the second transmission shaft 62 and is wound up as the second transmission shaft 62 rotates. The positioning disk 61 is used to position the side of the wound film strip, making the winding of the film strip more stable. The pinion 6 meshes with the transmission gear 5, and the transmission gear 5 meshes with the large gear 1. Through the transmission gear 5, the large gear 1 and the pinion 6 can rotate in the same direction during operation. The large gear 1 has a clearance groove 16, and a second pawl 17 is provided in the clearance groove 16. A limiting tooth that cooperates with the second pawl 17 can be provided on the side wall of the housing 7 to restrict the large gear 1 from reversing.

[0032] A correction belt for the aforementioned anti-rotation mechanism further includes a housing 7. The housing 7 has a cavity for accommodating the anti-rotation mechanism. The cavity has a first shaft post 71, a second shaft post 72, and a third shaft post 73. A first transmission shaft 4 is sleeved on the first shaft post 71, a transmission gear 5 is sleeved on the second shaft post 72, and a second transmission shaft 62 is sleeved on the third shaft post 73.

[0033] Compared with existing technologies, the advantages of this new invention are that, through the cooperation of the first pawl 21 and the anti-rotation tooth 12, when the tray 2 rotates to supply the film belt, it can drive the large gear 1 to rotate together, and through the transmission gear 5, drive the small gear 6 to rotate, so that the small gear 6 rotates to wind up the film belt. The structure is simpler, the cooperation between the tray 2 and the large gear 1 is more secure, and the assembly and disassembly are more convenient and quick. Furthermore, during the rotation of the large gear 1, the first pawl 21 contacts the surface of the resistance anti-rotation part, which can push the first pawl 21 inward, creating an interactive resistance force between the large gear 1 and the first pawl 21. This resistance force increases the resistance to the rotation of the large gear 1, giving it a slightly stuck feel during use, preventing the large gear 1 from rotating too fast and feeding too much film belt, thus preventing film belt waste. In addition, the second pawl 17 also serves to stop the rotation of the large gear 1, preventing it from rotating in the opposite direction.

[0034] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A simple structure of a rotation stopper mechanism characterized by comprising: It includes a large gear and a tray. The tray is rotatably connected to the housing. The large gear has a groove at its center. The tray is embedded in the groove. The side wall of the groove has a resistance anti-rotation part. The side wall of the tray has a first pawl. The first pawl is in contact with the resistance anti-rotation part.

2. A compact anti-rotation mechanism as claimed in claim 1, characterized in that The first pawl includes an arc-shaped connecting part, one end of which is connected to the tray, and the other end of which is provided with a pawl part protruding outward, the pawl part being in contact with the resistance anti-rotation part.

3. A compact anti-rotation mechanism as claimed in claim 2, characterized in that The resistance anti-rotation part consists of anti-rotation teeth arranged in a row. Each anti-rotation tooth includes a first inclined surface and a first abutting surface that are connected at intervals. The pawl part is provided with a second inclined surface corresponding to the first inclined surface, and the pawl part is provided with a second abutting surface corresponding to the first abutting surface.

4. A compact anti-rotation mechanism as claimed in claim 2, characterized in that The resistance and anti-rotation part consists of arc-shaped protrusions and arc-shaped concave parts arranged at intervals.

5. A compact anti-rotation mechanism as claimed in claim 1, characterized in that The tray has a first drive shaft at its center, and a positioning protrusion is provided on the side wall of the first drive shaft.

6. A compact anti-rotation mechanism as claimed in claim 5, characterized in that The groove has a through hole in the center, and the large gear has a slot on the opposite side of the groove. One end of the first drive shaft passes through the through hole, and the end of the first drive shaft has a locking tooth that engages with the slot.

7. A compact anti-rotation mechanism as claimed in claim 1, characterized in that The bottom of the groove is provided with an annular guide groove, and the bottom surface of the tray is provided with a guide block, which slides in conjunction with the guide groove.

8. A compact anti-rotation mechanism as claimed in claim 1, characterized in that It also includes a transmission gear and a pinion that are rotatably connected to the housing. The end face of the pinion is provided with a positioning plate, and the positioning plate is provided with a second transmission shaft. The pinion and the transmission gear mesh with each other for transmission, and the transmission gear and the large gear mesh with each other for transmission.

9. The anti-rotation mechanism with a simple structure as described in claim 1, characterized in that, The large gear has a clearance groove, and a second ratchet is provided in the clearance groove.

10. A correction tape based on the anti-rotation mechanism according to any one of claims 1 to 9, characterized by It also includes a housing, which has a cavity for accommodating an anti-rotation mechanism. The cavity has a first shaft, a second shaft, and a third shaft. A first drive shaft is sleeved on the first shaft, a drive gear is sleeved on the second shaft, and a second drive shaft is sleeved on the third shaft.

Images