An improved check mechanism

Abstract

The utility model relates to a correction tape check valve structure, specifically is a kind of improved check valve mechanism, including check valve disc and the gear rotationally connected with the check valve disc, multiple check valve teeth are peripherally provided on the check valve disc;At least two check valve parts are formed on the gear, and at least two check valve parts are distributed along the periphery and are set in the mode of not simultaneously engaging with the check valve tooth.By the single cooperation of the check valve part of two or more than two and check valve tooth, the back-off distance of gear in the operation process is reduced, so the number of check valve tooth on check valve disc can be effectively reduced, to reduce the processing cost and difficulty of mould;At the same time, since the meshing distance of check valve part is shorter than the existing single angle structure, and only one check valve part is unidirectionally engaged with check valve tooth each time, the noise generated by correction tape is smaller.

Description

Technical Field

[0001] This utility model relates to a correction belt check structure, specifically an improved check mechanism. Background Technology

[0002] Correction tape is a white, opaque pigment similar to correction fluid. It is applied to paper to cover up mistakes, allowing for immediate rewriting and providing convenience for study and work. The structure includes upper and lower covers, large and small gears, and a connecting body. The front of the connecting body has a nozzle seat, with the nozzle embedded in it. The rear of the nozzle seat has an upper cover seat. The connecting body has positioning pins. The middle and rear parts of the connecting body have open slots, the bottom of which are the pinion and large gear shaft holes, respectively. The large and small gears fit into the large and small shaft holes of the connecting body, ensuring a uniform feed of the correction tape. An internal anti-reverse mechanism is also included.

[0003] Existing check mechanisms generally adopt a "single-arm-single-angle" or "double-arm-single-angle" structure that meshes unidirectionally with multiple check teeth on the check disc. In order to meet the user's need for "point trimming and retraction" feel, multiple check teeth are generally required on the check disc. However, a denser set of check teeth will increase the precision of mold processing. Utility Model Content

[0004] The purpose of this invention is to provide an improved check mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an improved check mechanism, comprising a check disc and a gear rotatably connected to the check disc, wherein the check disc is provided with a plurality of check teeth in the circumferential direction; the gear is provided with at least two check portions, wherein the at least two check portions are distributed in the circumferential direction and are arranged in a manner that do not engage with the check teeth simultaneously.

[0006] The improved check mechanism as described above: a check arm is fixed on the gear, and at least two check teeth are arranged along the circumference of the check arm, the check teeth forming the check part.

[0007] The improved check mechanism as described above: two or more check arms are fixed on the gear, and at least one check tooth is provided on the circumference of the check arm, the check tooth forming the check part.

[0008] The improved check mechanism described above: the meshing parts of the check teeth and the check teeth are all rounded.

[0009] The improved check mechanism described above: the check arm is arranged in an arc shape and is integrally formed with the gear.

[0010] The improved check mechanism described above: a protrusion is formed on the check disc, a sleeve is formed on the gear, and the sleeve is fitted onto the protrusion and can rotate circumferentially relative to the protrusion.

[0011] Compared with the prior art, the beneficial effects of this utility model are: by setting two or more check parts that engage with check teeth in a single manner, the back distance of the gear during operation is reduced, thereby effectively reducing the number of check teeth on the check disc, so as to reduce the processing cost and difficulty of the mold; at the same time, since the meshing distance of the check parts is shorter than that of the existing single-angle structure and only one check part engages with the check tooth in a single direction at a time, the noise generated by the correction band is smaller. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the improved check valve mechanism; Figure 2 Top view of the improved check valve mechanism; Figure 3 This is a schematic diagram of the gear and check arm in the improved check mechanism; Figure 4 A schematic diagram of the check disc in the improved check mechanism; Figure 5 A schematic diagram of the improved check valve mechanism in state D; Figure 6 A schematic diagram of the improved check valve mechanism in state E; Figure 7 A schematic diagram of the improved check valve mechanism in state F; Figure 8 This is a schematic diagram of the improved check mechanism in state G.

[0013] In the diagram: 1-Check plate, 101-Check tooth, 102-Protrusion, 2-Gear, 201-Sleeve, 3-Check arm, 301-First check tooth, 302-Second check tooth, 303 Third check tooth, 304-Fourth check tooth. Detailed Implementation

[0014] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0015] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0016] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0017] Please see Figures 1-4 In this embodiment of the utility model, an improved check mechanism includes a check disc 1 and a gear 2 rotatably connected to the check disc 1. Specifically, a protrusion 102 is formed on the check disc 1, and a sleeve 201 is formed on the gear 2. The sleeve 201 is sleeved on the protrusion 102 and can rotate circumferentially relative to the protrusion 102.

[0018] The check disc 1 is provided with a plurality of check teeth 101 in the circumferential direction; the gear 2 is provided with at least two check parts, which are distributed in the circumferential direction and are arranged in a manner that do not engage with the check teeth 101 at the same time.

[0019] In this embodiment, by setting two or more check parts that engage with check teeth 101 individually, the retraction distance of gear 2 during operation is reduced, thereby effectively reducing the number of check teeth 101 on check disc 1, thus reducing the processing cost and difficulty of the mold; at the same time, since the meshing distance of the check parts is shorter than that of the existing single-angle structure and only one check part engages with check teeth 101 in one direction at a time, the noise generated by the correction band is reduced.

[0020] In one exemplary embodiment, a check arm 3 is fixed on the gear 2. At least two check teeth are arranged along the circumference of the check arm 3, forming the check portion. Using two check teeth as an example, the two check teeth are a first check tooth 301 and a second check tooth 302. Taking the engagement of a single check tooth 101 with two check teeth as an example, the check tooth 101 is defined as check tooth B. Check teeth A and C are located before and after check tooth B (with the rotation direction of gear 2 as the front), respectively. When the first check tooth 301, located in front of the rotation direction of gear 2, meshes unidirectionally with check tooth B, the second check tooth 302, located behind, is located between check tooth A and check tooth B. When the second check tooth 302, located behind the rotation direction of gear 2, meshes unidirectionally with check tooth B, the first check tooth 301, located in front, is located between check tooth B and check tooth C.

[0021] As can be seen from the above, by setting at least two check teeth, the number of check teeth 101 can be effectively reduced. For example, the number of check teeth 101 on the check plate 1 is 16, and by setting two check teeth, a 32-tooth backflow restriction effect can be achieved.

[0022] In one embodiment, the gear 2 is fixed with two or more check arms 3, and each check arm 3 is provided with at least one check tooth along its circumference, the check tooth forming the check portion.

[0023] Taking a check arm 3 as an example, with two check arms 3 and two check teeth on each check arm 3, the four check teeth are the first check tooth 301, the second check tooth 302, the third check tooth 303, and the fourth check tooth 304: Please refer to Figure 1 , 5 - Figure 8 The diagram shows the first check tooth 301, the second check tooth 302, the third check tooth 303, and the fourth check tooth 304 on the two check arms 3, which achieve four check states: state D, state E, state F, and state G. State D, state E, state F, and state G are the corresponding engagement positions of the first check tooth 301, the second check tooth 302, the third check tooth 303, and the fourth check tooth 304 when the gear 2 rotates clockwise.

[0024] In other words, the number of teeth on the check plate 1 is 36. By setting two check arms 3 and the first check teeth 301, the second check teeth 302, the third check teeth 303 and the fourth check teeth 304 on the two check arms 3, a 144-tooth back-retraction restriction effect can be achieved.

[0025] The meshing parts of the check tooth 101 and the check tooth are both rounded to further reduce impact noise.

[0026] The check arm 3 is designed with an arc shape and is integrally formed with the gear 2 to increase the stability of the connection between the check arm 3 and the gear 2.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An improved check valve mechanism, comprising a check valve disc (1) and a gear (2) rotatably connected to the check valve disc (1), wherein the check valve disc (1) is circumferentially provided with a plurality of check valve teeth (101); characterized in that, At least two check parts are formed on the gear (2), and the at least two check parts are distributed circumferentially and arranged in a manner that does not engage with the check tooth (101) at the same time.

2. The improved check valve mechanism according to claim 1, characterized in that, A check arm (3) is fixed on the gear (2), and at least two check teeth are provided along the circumference of the check arm (3), forming the check part.

3. The improved check valve mechanism according to claim 1, characterized in that, Two or more check arms (3) are fixed on the gear (2), and at least one check tooth is provided on the circumference of the check arm (3), and the check tooth forms the check part.

4. An improved check valve mechanism according to claim 2 or 3, characterized in that, The meshing parts of the check tooth (101) and the check tooth are both rounded.

5. An improved check valve mechanism according to claim 2 or 3, characterized in that, The check arm (3) is arranged in an arc shape and is integrally formed with the gear (2).

6. An improved check valve mechanism according to claim 1, characterized in that, A protrusion (102) is formed on the check plate (1), and a sleeve (201) is formed on the gear (2). The sleeve (201) is fitted on the protrusion (102) and can rotate circumferentially relative to the protrusion (102).

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