Ratchet structure of correction tape and correction tape

Abstract

The ratchet structure of the correction tape comprises a ratchet assembly and an abutting rod, the ratchet assembly comprises a plurality of ratchets, the ratchets are evenly distributed and define a ring, the cross section and the longitudinal section of each ratchet are trapezoid or triangular, and the cross section of the portion, making contact with the ratchets in the forward rotation process, of the abutting rod is rectangular. The cross sections and the longitudinal sections of the ratchets are arranged to be right trapezoids or right triangles, and the cross sections of the contact parts of the abutting rods and the ratchets are rectangular when the abutting rods and the ratchets rotate forwards, so that the abutting rods can be matched with the ratchet surfaces in different forms at the same time to provide a stopping function, namely, the abutting rods can be matched with the ratchet surfaces in different forms. The cross section and the longitudinal section of the ratchet are each provided with two inclined planes with different angles, the abutting rod can be arranged according to actual requirements, only a mold of the ratchet assembly needs to be arranged in the manufacturing process, and the production cost is reduced. And meanwhile, ribs are not required to be arranged, so that the injection molding process is reduced, and defective products such as shrinkage and bubbles are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of stationery products, in particular to a ratchet structure of a correction tape and the correction tape. Background Art

[0002] Correction tape is used in a roll-up form. It consists of a base tape as a carrier with a correction film attached to the carrier. It is also rolled up. Usually, it is equipped with mechanisms for releasing the tape, recycling the base tape, and peeling off the correction film. People usually call the tape with these mechanisms correction tape.

[0003] Traditional correction tape is wound around a feed pulley, pulled by the tape, and then released by the feed pulley through a gear drive, which then retracts it onto the take-up pulley. During this process, the tape passes over the upper and lower surfaces of tongues, which press and move the tongues, causing the film on the tape to cover the paper, covering typos and stains for easier correction. In this type of correction tape, the feed pulley must rotate in a unidirectional manner, for example, only clockwise. Counterclockwise rotation is prohibited, as counterclockwise rotation would pull the base tape in the opposite direction, releasing it and causing the tape to loosen.

[0004] For this purpose, a ratchet mechanism is also provided in the tape feed wheel, and the ratchet acts on the ratchet to prevent the tape feed wheel from rotating in the reverse direction. Figure 1 and Figure 2 In both forms, since the ratchet and ribs are placed in an overlapping manner, the ribs need to be thicker, so the injection molding process is required to be high in order to avoid product defects such as shrinkage and bubbles.

[0005] In view of this, the inventors of this case conducted in-depth research on the above-mentioned issues, which led to the creation of this case. Utility Model Content

[0006] The utility model aims to provide a correction tape ratchet structure and a correction tape which are simple in structure and easy to manufacture.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solution:

[0008] A ratchet structure for a correction tape, comprising a ratchet assembly disposed on a correction tape housing or gear, and a lever disposed on a feed wheel or a take-up wheel of the correction tape and adapted to the ratchet assembly, wherein when the feed wheel or the take-up wheel on which the lever is mounted rotates forward, the correction tape is ejected for use; conversely, when the feed wheel or the take-up wheel rotates reversely, the correction tape is not ejected;

[0009] The ratchet assembly includes a plurality of ratchets, which are evenly distributed and form a ring with the axis of the tape delivery wheel or the tape take-up wheel on which the push rod is mounted as the center. The cross-section and longitudinal section of each ratchet are trapezoidal or triangular, and the cross-section of the contact part between the push rod and each ratchet during forward rotation is rectangular.

[0010] Furthermore, the cross section and longitudinal section of each ratchet tooth are both in the shape of a right trapezoid or a right triangle.

[0011] Furthermore, the inner side of the ratchet assembly positioned in a ring shape is the inner side, and the side of the ratchet assembly in contact with the correction tape housing or the gear is the reference plane, each of the ratchets includes a first side surface in contact with the reference plane, a second side surface away from the reference plane, a third side surface perpendicular to and connected to the reference plane, a fourth side surface arranged on the inner side, and a fifth side surface arranged on the outer side, the fifth side surfaces of each ratchet are connected in a circular shape, the second side surface and / or the fourth side surface are inclined surfaces that can block the rotation of the tape feed wheel or the tape take-up wheel provided with the push rod, and the push rod is adapted to a side in contact with the inclined surface.

[0012] Furthermore, the angle between each of the second side surfaces and the reference plane is 30-60°.

[0013] Furthermore, the angle between each of the second side surfaces and the reference plane is 30-60°.

[0014] Furthermore, it also includes a ratchet positioning hoop with an annular structure, and each of the ratchets is evenly distributed on the inner surface or the outer surface of the ratchet positioning hoop.

[0015] Furthermore, the distance between the reference plane and the side of the ratchet positioning collar away from the reference plane is greater than the distance between the reference plane and the side of the ratchet away from the reference plane.

[0016] The utility model also provides a correction tape, comprising a correction tape housing, a tape feed wheel and a tape take-up wheel arranged in the correction tape housing, and also comprising a ratchet structure of the correction tape, wherein the ratchet assembly is arranged in the correction tape housing.

[0017] By adopting the above-mentioned design scheme, the beneficial effect of the utility model is: by setting the cross-section and longitudinal section of the ratchet to be trapezoidal or triangular, and the cross-section of the contact part of the push rod and the ratchet when rotating forward is rectangular, the push rod can simultaneously cooperate with different forms of ratchet surfaces to provide a stopping function. That is to say, the cross-section and longitudinal section of the ratchet have two forms of inclined surfaces with two different angles, and the push rod can be set according to actual needs. During production, only one mold for the ratchet assembly needs to be opened, which reduces the production cost; at the same time, there is no need to set ribs, which reduces the injection molding process of the utility model and avoids defective products such as shrinkage and bubbles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the prior art;

[0019] Figure 2 It is a structural diagram of another prior art;

[0020] Figure 3 This is a structural diagram of an embodiment of the utility model;

[0021] Figure 4 For this utility model Figure 3 Exploded view of

[0022] Figure 5 This is a schematic diagram of the ratchet mechanism in the present invention;

[0023] Figure 6 This is a structural diagram of another embodiment of the present utility model;

[0024] Figure 7 For this utility model Figure 5 Exploded view of

[0025] In the figure: correction tape housing 1, reference surface 11, tape feed pulley 2, push rod 21, first contact surface 221, second contact surface 222, ratchet 3, first side surface 31, second side surface 32, third side surface 33, fourth side surface 34, fifth side surface 35, sixth side surface 36, ratchet positioning hoop 4. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Reference Figures 3 to 7

[0028] A ratchet structure of a correction tape includes a ratchet assembly arranged on a correction tape housing 1 or a gear, and a push rod 21 arranged on a feed pulley 2 or a take-up pulley of the correction tape and adapted to the ratchet assembly. It is worth noting that the push rod 21 of this embodiment can be arranged on the feed pulley 2 or on the take-up pulley. In this embodiment, the push rod 21 is arranged on the feed pulley 2 as an example; at the same time, the ratchet assembly of this embodiment can be arranged on the correction tape housing 1 or on a gear (not shown in the figure), which will not be described in detail here.

[0029] The ratchet assembly includes several ratchets 3, which are evenly distributed around the axis of the tape feed pulley 2 and form a ring. The cross-section and longitudinal section of each ratchet 3 are right-angled trapezoids or right-angled triangles, and the cross-section of the first contact surface 221 of the push rod 21 and the contact part of the ratchet 3 is rectangular.

[0030] For the convenience of description, the inner side of the annular ratchet assembly is positioned as the inner side, and the surface of the ratchet assembly in contact with the correction tape housing 1 or the gear is taken as the reference surface 11 .

[0031] A stopper 22 that matches the ratchet 3 is provided at the end of the stopper rod 21 . The stopper 22 includes a first contact surface 221 and a second contact surface 222 .

[0032] Each ratchet tooth 3 includes a first side surface 31 in contact with the reference plane 11, a second side surface 32 away from the reference plane 11, a third side surface 33 perpendicular to and connected to the reference plane 11, a fourth side surface 34 arranged on the inner side, a fifth side surface 35 arranged on the outer side, and a sixth side surface 36 away from the third side surface 33 (when the sixth side surface 36 is provided, the cross-section and longitudinal sections of the ratchet tooth 3 are both right-angled trapezoids; when the sixth side surface 36 is not provided, the cross-section and longitudinal sections of the ratchet tooth 3 are both right-angled triangles), the fifth side surface 35 of each ratchet tooth 3 is connected to form a circle, the second side surface 32 and / or the fourth side surface 34 is an inclined surface that can block the rotation of the tape feed wheel 2 provided with the push rod 21, the first contact surface 221 is adapted to the surface in contact with the inclined surface, that is, the first contact surface 221 and the second side surface 32 and / or the fourth side surface 34 are all inclined surfaces, and the inclination angles are comparable; the third side surface 33 is adapted to the second contact surface 222, that is, the third side surface 33 and the second contact surface 222 are both right-angled surfaces.

[0033] When the first contact surface 221 is matched with the second side surface 33, the first contact surface 221 is positioned downward toward the reference surface 11 (refer to FIG. Figure 3 and Figure 4 ), when the tape feed wheel 2 rotates forward, the second side surface 31 contacts the first contact surface 221, and the correction tape is normally discharged. When the tape feed wheel 2 rotates reversely, the third side surface 33 contacts the second contact surface 222, and the tape feed wheel 2 stops rotating, that is, the correction tape is not discharged.

[0034] In another embodiment, when the first contact surface 221 is matched with the fourth side surface 34, the first contact surface 221 is arranged outward (refer to Figure 5 and Figure 6 ), when the tape feed wheel 2 rotates forward, when the fourth side surface 34 contacts the first contact surface 221, the correction tape is normally discharged. When the tape feed wheel 2 rotates reversely, when the third side surface 33 contacts the second contact surface 222, the tape feed wheel 2 stops rotating, that is, the correction tape is not discharged.

[0035] Furthermore, the included angles between the first contact surface 221 , each second side surface 32 and the reference plane 11 are 30-60°, and the included angle between each second side surface 32 and the vertical reference plane 11 is 30-60°.

[0036] Furthermore, it also includes a ratchet positioning hoop 4 with an annular structure, and each ratchet 3 is evenly distributed on the inner surface of the ratchet positioning hoop 4, and the distance between the side of the ratchet positioning hoop 4 away from the reference plane 11 and the reference plane 11 is greater than the distance between the side of the ratchet 3 away from the reference plane 11 and the reference plane 11.

[0037] The utility model also provides a correction tape, including a correction tape housing 1 and a tape feed wheel 2 and a tape take-up wheel arranged in the correction tape housing 1 , and also includes a correction tape ratchet structure, wherein the ratchet assembly is arranged in the correction tape housing 1 .

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ratchet structure of a correction tape, characterized by: The correction tape comprises a ratchet assembly arranged on a correction tape housing or a gear, and a lever arranged on a feed wheel or a take-up wheel of the correction tape and adapted to the ratchet assembly. It is defined that when the feed wheel or the take-up wheel on which the lever is mounted rotates forward, the correction tape is unloaded for use. Conversely, when the feed wheel or the take-up wheel rotates reversely, the correction tape is not unloaded. The ratchet assembly includes a plurality of ratchets, which are evenly distributed and form a ring with the axis of the tape delivery wheel or the tape take-up wheel on which the push rod is mounted as the center. The cross-section and longitudinal section of each ratchet are trapezoidal or triangular, and the cross-section of the contact part between the push rod and each ratchet during forward rotation is rectangular.

2. The ratchet structure of a correction tape according to claim 1, characterized in that: The cross section and longitudinal section of each ratchet tooth are both in the shape of a right-angled trapezoid or a right-angled triangle.

3. The ratchet structure of a correction tape according to claim 1, characterized in that: The inner side of the ratchet assembly positioned in a ring shape is the inner side, and the side of the ratchet assembly in contact with the correction tape housing or the gear is the reference plane, each of the ratchets includes a first side surface in contact with the reference plane, a second side surface away from the reference plane, a third side surface perpendicular to and connected to the reference plane, a fourth side surface arranged on the inner side, and a fifth side surface arranged on the outer side, the fifth side surfaces of each ratchet are connected to form a circle, the second side surface and / or the fourth side surface are inclined surfaces that can block the rotation of the tape feed wheel or the tape take-up wheel provided with the push rod, and the push rod is adapted to a side in contact with the inclined surface.

4. The ratchet structure of a correction tape according to claim 3, characterized in that: The included angle between each of the second side surfaces and the reference plane is 30-60°.

5. The ratchet structure of a correction tape according to claim 3, characterized in that: The included angle between each of the second side surfaces and the perpendicular plane is 30-60°.

6. The ratchet structure of a correction tape according to claim 3, characterized in that: It also includes a ratchet positioning hoop in an annular structure, and each of the ratchets is evenly distributed on the inner surface or the outer surface of the ratchet positioning hoop.

7. The ratchet structure of a correction tape according to claim 6, characterized in that: The distance between the reference plane and the side of the ratchet positioning collar away from the reference plane is greater than the distance between the reference plane and the side of the ratchet away from the reference plane.

8. A correction tape comprising a correction tape housing and a tape feed pulley and a tape take-up pulley disposed within the correction tape housing, characterized in that: It also includes the ratchet structure of the correction tape according to any one of claims 1 to 7, wherein the ratchet assembly is disposed in the correction tape housing.

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