Snap spring pliers

Abstract

The utility model discloses a pair of clamp spring pliers, belongs to the technical field of hardware tools, and solves the problems that the clamp spring needs to be separated from the clamp spring pliers firstly, and the clamp spring is required to reach an accurate position when the clamp spring is mounted through the existing clamp spring pliers. And then, further pushing is still needed to enable the clamp spring to fall into an accurate mounting position. Comprising two forceps heads, one of the forceps heads is fixedly connected with a rotating part, the other forceps head is rotatably connected in the rotating part, one end of each of the two forceps heads is fixedly connected with a forceps handle, the other end of each of the two forceps heads is fixedly connected with a Z-shaped bending part, and a forceps column is integrally formed on the bending part. When the clamp spring plier is used, the plier mouth is inserted into the clamp spring round hole, the semicircular portion abuts against and deflects the plier head, the distance is reduced, the clamp spring is deformed and then installed, rapid positioning and releasing are facilitated, and when disassembly is needed, the clamp spring is clamped through the caulking groove to be separated, and the clamp spring is not prone to disengagement in the process.

Description

Technical Field

[0001] This utility model relates to the field of hardware tools technology, and in particular to a snap ring pliers. Background Technology

[0002] Snap ring pliers, also known as retainer pliers or snap ring pliers, are specialized tools used for installing and removing snap rings. They typically consist of a handle and two jaws, designed in a specific shape to accommodate different types of snap rings. The handle of snap ring pliers is usually longer to provide sufficient leverage, allowing for easier operation. Furthermore, the jaws of snap ring pliers are typically very finely designed to ensure that the snap ring is not damaged during installation or removal. Snap ring pliers are widely used in mechanical repair, automotive repair, and various industrial fields, especially in situations requiring snap ring replacement or adjustment. Using snap ring pliers can significantly improve work efficiency and reduce the inconvenience and potential injury caused by manual operation. Proper use of snap ring pliers not only protects the integrity of the snap ring but also extends its service life, ensuring the normal operation of mechanical equipment.

[0003] In the prior art, in order to avoid the snap ring pliers from breaking when snapping the snap ring, the snap ring pliers structure may adopt a one-piece molded structure. For example, a snap ring pliers with application number CN202122458288.5 has the following technical features: it includes two cross-hinged pliers heads, one end of which is fixedly connected to a pliers handle, and the other end of which is fixedly connected to a pliers jaw. The pliers jaw includes a column, a platform with a gradually decreasing radius, and a rod connected to the small end face of the platform. The column, platform, and rod are one-piece molded structures, and a groove is opened on the side of the two rods that are far apart from each other.

[0004] The current snap ring clamps, through the setting of the groove, allow the snap ring to fall into the groove when clamping, thereby transmitting the force applied by the snap ring to the entire rod. Furthermore, since the post, platform, and rod are integrally molded, the entire snap ring clamp can resist the reverse force applied by the snap ring, preventing it from breaking.

[0005] However, this type of snap ring pliers has encountered significant problems in practical applications. When installing snap rings, there is still a certain distance between the groove on the shank and the end of the shank. For example, when installing it inside a car engine, the snap ring's installation position is in contact with the engine's bearing. Using this type of snap ring pliers, it is difficult to get the snap ring to the correct position. It is necessary to first disengage from the snap ring pliers and then push it further to allow the snap ring to fall into its accurate installation position. However, during this adjustment process, the snap ring releases elastic potential energy that diffuses outward in the circumferential direction, with its outer ring pressing against the inner wall of the engine's shaft channel. Once a force is applied to push the snap ring, wear will occur between the snap ring and the inner wall of the engine's shaft channel. After repeated repairs and disassemblies, there will be very obvious wear on the inner wall of the engine's shaft channel, leading to a decrease in sealing performance.

[0006] Therefore, a snap ring pliers is proposed to solve or alleviate the above problems. Utility Model Content

[0007] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a snap ring pliers.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A snap ring pliers includes two pliers heads, one of which is fixedly connected to a rotating part, and the other pliers head is rotatably connected within the rotating part. One end of each of the two pliers heads is fixedly connected to a pliers handle, and the other end of each of the two pliers heads is fixedly connected to a Z-shaped bend. The bend is integrally formed with a pliers post, and the end of the pliers post away from the bend is integrally formed with a narrowed end. The narrowed end is integrally formed with a pliers jaw. The end of the pliers jaw away from the narrowed end is cut to form a semi-circular portion, and the plane of the semi-circular portion faces outward. A groove is formed on the outer side of the pliers jaw between the narrowed end and the semi-circular portion.

[0010] Preferably, the length of the semicircular portion is greater than the width of the groove.

[0011] Preferably, the distance between adjacent jaw portions is 4cm to 15.5cm.

[0012] Preferably, there is always an included angle between the planes of the two semicircles, between the central axes of the two constricted portions, and between the central axes of the two pincers.

[0013] Preferably, the ends of the two pliers away from the pliers head are bent toward each other to form an inner bend, and a space is formed between adjacent inner bends.

[0014] Preferably, the ends of the two inner bends away from the pliers handle are turned outward to form outer bends, and adjacent outer bends are positioned far apart from each other.

[0015] This utility model has the following beneficial effects:

[0016] When using these snap ring pliers, insert the jaws into the snap ring's round hole, use the semi-circular part to abut and deflect the jaws, reducing the gap to deform the snap ring before installation. This facilitates quick positioning and release. Conversely, when disassembly is required, use the groove to hold the snap ring in place so that it can be removed without easily detaching during the process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0021] Figure 4 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0022] Figure 5 for Figure 4 Enlarged view of point C in the middle.

[0023] 1. Pliers head; 2. Turning part; 3. Bending part; 4. Pliers post; 401. Constricted mouth part; 402. Pliers jaw part; 4021. Semicircular part; 4022. Gutter; 5. Pliers handle; 501. Inward bend part; 502. Outward bend part; 503. Interval space. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the terms "first," "second," and "third" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] A type of snap ring pliers, such as Figures 1 to 3As shown, the pliers include two pliers heads 1, one of which is fixedly connected to a rotating part 2, and the other pliers head 1 is rotatably connected inside the rotating part 2. A pliers handle 5 is fixedly connected to one end of each pliers head 1, and a Z-shaped bend 3 is fixedly connected to the other end of each pliers head 1. A pliers post 4 is integrally formed on the bend 3, and a constricted portion 401 is integrally formed on the end of the pliers post 4 away from the bend 3. A jaw portion 402 is integrally formed on the constricted portion 401, and the end of the jaw portion 402 away from the constricted portion 401 is used for cutting. A semicircular portion 4021 is formed, with the plane of the semicircular portion 4021 facing outward. An included angle always exists between the planes of the two semicircular portions 4021, between the central axes of the two constricted portions 401, and between the central axes of the two clamping posts 4. A groove 4022 is provided on the outer side of the jaw portion 402, located between the constricted portion 401 and the semicircular portion 4021. The length of the semicircular portion 4021 is greater than the width of the groove 4022. The distance between adjacent jaw portions 402 is 4cm to 15.5cm.

[0031] like Figure 4 and Figure 5 As shown, the ends of the two pliers 5 away from the pliers head 1 are bent towards each other to form an inner bend 501, and an interval space 503 is formed between adjacent inner bends 501. The ends of the two inner bends 501 away from the pliers 5 are turned outward to form an outer bend 502, and adjacent outer bends 502 are set away from each other.

[0032] In practical application, if a retaining ring needs to be installed, the jaws 402 are inserted into the round holes at both ends of the retaining ring, primarily by inserting the semicircular portion 4021 into the round hole, ensuring that the flat surface and upper end face of the semicircular portion 4021 abut against the retaining ring. Then, the jaws 5 are pulled open, causing the two jaws 1 to deflect via the rotating part 2. After deflection, the distance between the two bent portions 3 decreases, correspondingly reducing the distance between the jaw posts 4, the constricted jaws 401, and the jaws 402. This allows the two ends of the retaining ring to come closer together, causing the outer diameter of the retaining ring to shrink due to elastic deformation, allowing the retaining ring to shrink and be inserted into the corresponding jaw. In the space, such as inside the shaft of the engine, and since the position of the snap ring is not restricted at this time, the snap ring is displaced in the length direction of the semicircular part 4021, so that the end of the snap ring pliers will not obstruct the position setting of the snap ring. When it is necessary to release the relationship between the snap ring pliers and the snap ring, since there is always an included angle between the planes of the two semicircular parts 4021, the plane of the semicircular part 4021 cannot maintain a surface fit with the inner wall of the circular hole at both ends of the snap ring. Therefore, when the semicircular part 4021 leaves, it can reduce the contact area with the snap ring, which makes it easy for the snap ring pliers to quickly leave the circular hole at both ends of the snap ring.

[0033] Conversely, if it is necessary to disassemble the retaining ring in some scenarios, the jaws 402 of the retaining ring pliers can be inserted into the two round holes at both ends of the retaining ring, and the retaining ring can be embedded in the groove 4022. The groove 4022 holds the retaining ring in place, making it difficult for the retaining ring to fall off. Then, the outer diameter of the retaining ring can be reduced by the retaining ring pliers, causing it to undergo elastic deformation.

[0034] Secondly, since the distance between adjacent jaws 402 is 4cm to 15.5cm, this snap ring pliers can be used with snap rings of various sizes. Furthermore, the inward bend 501 and outward curve 502 of the pliers handle 5 make it easy to apply a rubber anti-slip sleeve directly to the outside of the pliers handle 5 when it is necessary to cover the outside of the pliers handle 5. The anti-slip sleeve is difficult to detach from the length of the pliers handle 5.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A type of snap ring pliers, characterized in that, The pliers include two pliers heads (1), one of which is fixedly connected to a rotating part (2), and the other pliers head (1) is rotatably connected to the rotating part (2). One end of each of the two pliers heads (1) is fixedly connected to a pliers handle (5), and the other end of each of the two pliers heads (1) is fixedly connected to a Z-shaped bending part (3). The bending part (3) is integrally formed with a pliers post (4), and the end of the pliers post (4) away from the bending part (3) is integrally formed with a constricted mouth part (401). The constricted mouth part (401) is integrally formed with a pliers mouth part (402). The end of the pliers mouth part (402) away from the constricted mouth part (401) is cut to form a semi-circular part (4021). The plane of the semi-circular part (4021) is set outward. A groove (4022) is opened on the outer side of the pliers mouth part (402) between the constricted mouth part (401) and the semi-circular part (4021).

2. The snap ring pliers according to claim 1, characterized in that, The length of the semicircular portion (4021) is greater than the width of the groove (4022).

3. A snap ring pliers according to claim 1, characterized in that, The distance between adjacent jaw portions (402) is 4cm to 15.5cm.

4. A snap ring pliers according to claim 1, characterized in that, An angle always exists between the planes of the two semicircular portions (4021), between the central axes of the two constricted portions (401), and between the central axes of the two clamping posts (4).

5. A snap ring pliers according to claim 1, characterized in that, The ends of the two clamp handles (5) away from the clamp head (1) are bent toward each other to form an inner bend (501), and a space (503) is formed between adjacent inner bends (501).

6. A snap ring pliers according to claim 5, characterized in that, The two inner bends (501) are turned outward at the ends away from the pliers (5) to form outer bends (502), and the adjacent outer bends (502) are set away from each other.

Images