Snap spring pliers

Abstract

The utility model relates to a clamp spring plier which comprises two plier bodies, a pin shaft and a plate spring mechanism. The clamp body comprises a handheld part, a connecting part and a clamping part, and the handheld part and the clamping part are arranged at the two opposite ends of the connecting part respectively; the plate spring mechanism is arranged between the handheld parts of the two clamp bodies; the connecting parts of the two clamp bodies are hinged through a pin shaft; a first preset angle alpha is formed between the planes of the mutually connected surfaces of the two connecting parts; the opening direction of the angle where the first preset angle alpha is located faces the plate spring mechanism; the plate spring mechanism comprises a first plate spring, a second plate spring and a reinforcing part; the first plate spring is connected with the second plate spring through the reinforcing part, and a second preset angle beta is formed between the first plate spring and the second plate spring in the body length direction; the first plate spring and the second plate spring have elasticity, so that the first plate spring and the second plate spring can deform when the two handheld parts approach each other; and an anti-skid part is arranged on the outer side wall of the handheld part.

Description

Technical Field

[0001] The present application relates to the technical field of hardware tools, and in particular to a circlip pliers. Background Art

[0002] Circlip pliers are special tools used to install internal and external circlips. They are similar in appearance to needle-nosed pliers, and the pliers heads can be straight inside, straight outside, bent inside, bent outside, etc. Circlip pliers can be used not only to install circlips, but also to remove circlips. The existing circlip pliers technology can refer to a circlip pliers structure with publication number CN210282163U, including a circlip handle hinged at the front end and symmetrically arranged, a supporting platform portion is provided at the front end of the circlip handle, and a circlip pliers head is vertically provided at the top of the supporting platform portion. However, during the installation of the circlip, the user needs to hold the circlip pliers by hand to adjust the opening and closing of the circlip pliers head to deform the circlip. Since the user cannot accurately control the force and thus the deformation of the circlip, if the circlip pliers are operated with large movements, it is easy to cause the circlip to break, or the circlip cannot rebound after the deformation exceeds the yield strength of its own material, and many other disadvantages and quality risks. Summary of the invention

[0003] In view of this, the present application proposes a circlip pliers, comprising: two pliers bodies, a pin shaft and a leaf spring mechanism;

[0004] The pliers body comprises: a hand-held portion, a connecting portion and a clamping portion, wherein the hand-held portion and the clamping portion are respectively arranged at two opposite ends of the connecting portion;

[0005] The leaf spring mechanism is arranged between the hand-held parts of the two pliers bodies;

[0006] The connecting parts of the two pliers are hinged by a pin shaft; a first preset angle α is set between the planes where the two connecting parts are connected to each other; the opening direction of the angle where the first preset angle α is located faces the leaf spring mechanism;

[0007] The leaf spring mechanism comprises: a first leaf spring, a second leaf spring and a reinforcement part; the first leaf spring is connected to the second leaf spring through the reinforcement part, and a second preset angle β is provided between the first leaf spring and the second leaf spring in the body length direction; the first leaf spring and the second leaf spring are both elastic, and are suitable for the first leaf spring and the second leaf spring to be deformed when the two hand-held parts are close to each other;

[0008] An anti-slip portion is arranged on the outer side wall of the hand-held portion.

[0009] In a possible implementation, the value range of the first preset angle α is: 10°<α<30°, and the value range of the second preset angle β is: 90°<β<150°.

[0010] In a possible implementation, a groove is formed at one end of the first leaf spring, a protrusion matching the groove is formed at one end of the second leaf spring, and the second leaf spring is clamped in the groove of the first leaf spring via the protrusion.

[0011] In a possible implementation, the reinforcement portion is a rubber band, and the reinforcement portion is sleeved at the connection between the second leaf spring and the first leaf spring.

[0012] In a possible implementation, the clamping portion is a rectangular plate-shaped structure, and the clamping portion is made of 45 steel material.

[0013] In a possible implementation manner, the handheld portion has a long arc-shaped structure.

[0014] In a possible implementation, a third preset angle γ is provided between a plane where a surface of the connecting portion connected to the clamping portion is located and a plane where the clamping portion is located.

[0015] In one possible implementation, two mounting seats are also included;

[0016] The two mounting seats are respectively arranged on opposite sides of the two connecting parts; and the two mounting seats are coaxially arranged; the pin shaft passes through the two mounting seats and is suitable for hingedly connecting the connecting parts of the two pliers bodies.

[0017] In a possible implementation, the anti-slip portion wraps around the outer side wall of the hand-held portion; the material of the anti-slip portion is rubber.

[0018] Beneficial effects of this application:

[0019] By controlling and adjusting the tension of the leaf spring mechanism, the clamping force and the opening and closing degree of the circlip pliers during the clamping process are controlled to ensure that the circlip is firmly clamped while avoiding damage to the circlip due to excessive clamping.

[0020] By reasonably setting the second preset angle β, the opening and closing degree and clamping force of the circlip pliers are ensured, and the stability and accuracy of the circlip pliers during the clamping and releasing process are guaranteed, thereby ensuring that the user can operate more easily and smoothly.

[0021] By arranging the first leaf spring and the second leaf spring into a strip plate structure, the long strip plate structure enables the first leaf spring and the second leaf spring to distribute stress more evenly when subjected to external force, thereby avoiding damage caused by stress concentration and improving the fatigue life and durability of the leaf spring.

[0022] The clamping part is arranged as a rectangular parallelepiped structure, which is not easy to shake or tilt when clamping a workpiece such as a retaining spring, thereby being able to better fix the retaining spring for disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0024] Figure 1 A schematic diagram of the main structure of the circlip pliers of the present application is shown;

[0025] Figure 2 The structural diagram of the connection part of this application is shown;

[0026] Figure 3 A schematic diagram showing the main structure of the clamp body of the present application is shown;

[0027] Figure 4 A schematic diagram showing the main structure of the clamping part of the present application is shown;

[0028] Figure 5 A schematic diagram showing the main structure of the connection part of this application is shown;

[0029] Figure 6 A schematic diagram showing the main structure of the leaf spring mechanism of the present application is shown;

[0030] Figure 7 A schematic diagram of the main structure of the pin shaft of the present application is shown. DETAILED DESCRIPTION

[0031] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0032] Among them, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model or simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0035] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0036] Figure 1 The main structure diagram of the circlip pliers of the present application is shown. Figure 2 A schematic diagram showing the connection part of this application is shown, Figure 3 The main structure diagram of the clamp body of the present application is shown in FIG. Figure 4 A schematic diagram showing the main structure of the clamping part of the present application is shown; Figure 5 The main structure diagram of the connection part of this application is shown. Figure 6 A schematic diagram showing the main structure of the leaf spring mechanism of the present application is shown; Figure 7 The main structure diagram of the pin shaft of the present application is shown in FIG. Figures 1 to 7 As shown, the present application provides a circlip pliers, including: two pliers bodies, a pin 210 and a leaf spring mechanism; the pliers bodies include: a hand-held portion 110, a connecting portion 120 and a clamping portion 130, the hand-held portion 110 and the clamping portion 130 are respectively arranged at opposite ends of the connecting portion 120; the leaf spring mechanism is arranged between the hand-held portions 110 of the two pliers bodies, and the connecting portions 120 of the two pliers bodies are hinged by the pin 210; a first preset angle α is set between the planes where the two connecting portions 120 are connected to each other; the first preset angle α is set between the planes where the two connecting portions 120 are connected to each other; the first preset angle α is set between the hand-held portions 110 and the connecting portion 120 ... Assume that the opening direction of the angle α is toward the leaf spring mechanism; the leaf spring mechanism includes: a first leaf spring 310, a second leaf spring 320 and a reinforcement part 330, the first leaf spring 310 is connected to the second leaf spring 320 through the reinforcement part 330, and a second preset angle β is set between the first leaf spring 310 and the second leaf spring 320 in the body length direction, and the first leaf spring 310 and the second leaf spring 320 are both elastic, which is suitable for the first leaf spring 310 and the second leaf spring 320 to be deformed when the two hand-held parts 110 are close to each other.

[0037] It should be noted here that the hand-held portion 110 and the clamping portion 130 are respectively arranged at opposite ends of the connecting portion 120; the hand-held portion 110 is suitable for providing a gripping space for the user, so that the user can apply force to operate the circlip pliers, and the connecting portion 120 is suitable for firmly connecting the hand-held portion 110 and the clamping portion 130 together, ensuring that the force at the hand-held portion 110 can be smoothly transmitted to the clamping portion 130, and the clamping portion 130 is suitable for installing or removing the circlip, and the connecting portion 120 of the two pliers bodies is hinged by a pin shaft 210, and the two pliers bodies are connected around the pin shaft 210. The shaft 210 rotates to realize the opening and closing of the clamping part 130, so that the circlip pliers can adapt to circlips of different sizes or shapes, and a first preset angle α is provided between the planes where the two connecting parts 120 are connected to each other; the opening direction of the angle where the first preset angle α is located is toward the leaf spring mechanism; by setting the first preset angle α, during use, the clamping force of the circlip pliers is evenly distributed along the direction of the first preset angle α, reducing the possibility of single-point force, thereby avoiding the slippage or displacement of the circlip when subjected to force, and ensuring the stability of clamping.

[0038] The leaf spring mechanism is arranged between the hand-held parts 110 of the two pliers, and is suitable for adjusting the opening and closing degree and clamping force of the clamping part 130; it should be pointed out here that when the staff presses the hand-held part 110, the leaf spring mechanism is elastic, and generates bending deformation while providing support force in the opposite direction of the hand-held part. Under the support of the leaf spring mechanism, it is convenient for the staff to apply pressure to the hand-held part 110, and it can be avoided that the staff operates with great force, resulting in a large opening and closing of the two clamping parts 130. By controlling and adjusting the tension of the leaf spring mechanism, the clamping force and opening and closing degree of the circlip pliers during the clamping process are controlled to ensure that the circlip is firmly clamped, while avoiding damage to the circlip caused by excessive clamping.

[0039] Furthermore, the leaf spring mechanism includes: a first leaf spring 310, a second leaf spring 320 and a reinforcement portion 330 that are connected. The first leaf spring 310 is connected to the second leaf spring 320 via the reinforcement portion 330. A second preset angle β is provided between the first leaf spring 310 and the second leaf spring 320 in the body length direction. The first leaf spring 310 and the second leaf spring 320 are made of elastic material. When the leaf spring mechanism is subjected to external force, the first leaf spring 310 and the second leaf spring 320 are deformed, and quickly return to their original state after the external force disappears. By reasonably setting the second preset angle β, the opening and closing degree and clamping force of the circlip pliers are ensured, and the stability and accuracy of the circlip pliers during the clamping and releasing process are ensured, thereby ensuring that the user can operate it more easily and smoothly.

[0040] In one possible approach, Figure 1As shown, the value range of the first preset angle α is: 10°<α<30°, and preferably, the value of the first preset angle α is: 20°. It should be noted here that the first preset angle α is the angle between the body length directions of the connecting parts 120 of the two pliers when the circlip pliers are in the initial state (without any external force). By setting the first preset angle α, the strength of the connecting part 120 structure can be enhanced, so that the circlip pliers can withstand greater force when in use without being easily deformed.

[0041] In a possible implementation, the second preset angle β has a value range of 90°<β<150°, and preferably, the second preset angle β has a value of 130°. It should be noted that the second preset angle β is the angle between the first leaf spring 310 and the second leaf spring 320 in the body length direction when the circlip pliers are in the initial state (without any external force).

[0042] In a possible implementation, a groove is formed at one end of the first leaf spring 310 , a protrusion matching the groove is formed at one end of the second leaf spring 320 , and the second leaf spring 320 is snap-fitted into the groove of the first leaf spring 310 via the protrusion.

[0043] It should be noted here that one end of the first leaf spring 310 and one end of the second leaf spring 320 are clamped with each other through a groove and a protrusion structure, ensuring a firm connection between the first leaf spring 310 and the second leaf spring 320. The other ends of the first leaf spring 310 and the second leaf spring 320 are fixedly connected to the hand grips 110 of the two pliers bodies, respectively. When using the circlip pliers, by holding the hand grip 110 and applying appropriate force, when the leaf spring mechanism is pushed in a direction close to the pin shaft 210, the first leaf spring 310 and the second leaf spring 320 are deformed due to the pressure. When the hand grip 110 is released, the external force disappears, and the first leaf spring 310 and the second leaf spring 320 return to their original state. The first leaf spring 310 and the second leaf spring 320 are connected by a concave-convex matching manner to avoid dislocation when subjected to external force, thereby ensuring the stability of the circlip pliers structure.

[0044] In one possible implementation, Figure 6 As shown, the reinforcement part 330 is a rubber band, and the reinforcement part 330 is sleeved at the connection between the second leaf spring 320 and the first leaf spring 310. The reinforcement part 330 can further stabilize the concave-convex fitting connection between the first leaf spring 310 and the second leaf spring 320 to prevent the connection from loosening due to uneven force or vibration during operation.

[0045] In one possible implementation, the first leaf spring 310 and the second leaf spring 320 are in the form of a long plate. It should be noted here that the design of the long plate structure enables the first leaf spring 310 and the second leaf spring 320 to produce appropriate elastic deformation when subjected to external force, and then offset the external force through their own restoring force, thereby ensuring the stability and reliability of the mechanism. By arranging the first leaf spring 310 and the second leaf spring 320 into a long plate structure, the long plate structure enables the first leaf spring 310 and the second leaf spring 320 to distribute stress more evenly when subjected to external force, thereby avoiding damage caused by stress concentration and improving the fatigue life and durability of the first leaf spring 310 and the second leaf spring 320. Preferably, the first leaf spring 310 and the second leaf spring 320 are made of 45 steel.

[0046] In one possible implementation, the clamping portion 130 is in the form of a rectangular plate-like structure, and the clamping portion 130 is connected to the connecting portion 120. It should be noted here that the clamping portion 130 is configured as a rectangular plate-like structure. The clamping portion 130 with a rectangular plate-like structure can provide a more stable clamping surface. The clamping portion 130 can better contact with the retaining spring to provide sufficient clamping force, and is not prone to shaking or skewing when clamping workpieces such as retaining springs, thereby better fixing the retaining spring for disassembly and ensuring the stability of the retaining spring pliers during operation.

[0047] Furthermore, the clamping part 130 is made of 45 steel material. The clamping part 130 made of this material can effectively resist the friction and wear of the circlip. At the same time, this material can resist the erosion of corrosive media to prevent the clamping part 130 from rusting or being damaged. By adopting the clamping part 130 made of 45 steel material, the wear resistance and corrosion resistance of the circlip pliers are effectively improved, the service life of the circlip pliers is extended, and the work efficiency is improved.

[0048] In one possible implementation, Figure 2 As shown, a third preset angle γ is provided between the plane where the connecting portion 120 connects to the clamping portion 130 and the plane where the clamping portion is located. By setting the third preset angle γ, when the clamping portion 130 clamps an object, the clamp body plays a role of giving way, which facilitates the clamping portion 130 to enter a narrow space, and the clamping portion 130 can generate greater friction, thereby improving the stability of clamping. Preferably, the value range of the third preset angle γ is: 90°<γ<110°.

[0049] In one possible implementation, Figure 4 , Figure 5As shown, the clamping portion 130 is detachably connected to the connecting portion 120, and an adjusting screw 510 is fixedly provided on one side of the clamping portion 130 connected to the connecting portion 120, and a threaded hole 520 is provided on one side of the connecting portion 120 on which the clamping portion 130 is installed, and the clamping portion 130 is movably connected to the connecting portion 120 through the adjusting screw 510. It should be noted here that the adjusting screw 510 is tightened and unscrewed in the threaded hole 520 of the connecting portion 120, thereby driving the clamping portion 130 away from or close to the connecting portion 120, and the length of the clamping portion 130 is adjusted by screwing the adjusting screw 510 in and out of the threaded hole 520 of the connecting portion 120. The appropriate length of the clamping portion 130 can ensure that the operator can maintain sufficient operating space when installing or removing the retaining spring, avoid contact between the hands or other body parts and machine parts, and thus reduce the risk of accidental injury.

[0050] Furthermore, when the clamping part 130 is worn or damaged and needs to be replaced, the detachable design of the clamping part 130 allows the user to easily remove the clamping part 130 and install a new clamping part 130 without replacing the entire circlip pliers. This greatly saves the cost of repair and replacement, and at the same time enables the circlip pliers to adapt to a wider range of working environments and operating requirements, thereby improving the versatility and practicality of the tool.

[0051] In one possible implementation, the hand-held portion 110 is in a long arc shape. It should be noted that the hand-held portion 110 in a long arc shape can provide the user with a greater leverage, so that the user can obtain a greater torque output when applying the same force, thereby more accurately controlling the opening and closing degree of the circlip pliers to meet the needs of fine operation. Compared with a straight or shorter hand-held portion 110, the long arc-shaped hand-held portion 110 is more ergonomically designed, can better disperse hand pressure, reduce hand fatigue caused by long-term operation, and enable the user to hold the circlip pliers more stably during operation, reduce the difficulty of operation, and improve work efficiency.

[0052] In a possible implementation, a recessed portion 410 is provided at the connection between the hand-held portion 110 and the connecting portion 120, and the recessed portion 410 is a concave arc surface. Providing the recessed portion 410 at the connection between the hand-held portion 110 and the connecting portion 120 can effectively reduce stress concentration. During the use of the circlip pliers, the connection between the hand-held portion 110 and the connecting portion 120 will be subjected to a large force. If there is no recessed design, these forces may be concentrated on a certain point of the connection, causing the point to be damaged prematurely. The design of the recessed portion 410 can disperse the force to a wider area, thereby extending the service life of the circlip pliers. By reasonably setting the recessed portion 410, the connection can be made stronger, reducing the possibility of loosening or breaking during use.

[0053] In a possible implementation, two mounting seats 220 are further included; the two mounting seats 220 are arranged on opposite sides of the two connecting parts 120, and the two mounting seats 220 are coaxially arranged, and the pin shaft 210 passes through the two mounting seats 220 and is suitable for hingedly connecting the connecting parts 120 of the two pliers bodies.

[0054] It should be noted here that the mounting seat 220 is an annular structure, and the two mounting seats 220 are respectively arranged on the opposite side of the two connecting parts 120. The opposite sides of the two connecting parts 120 are respectively provided with grooves. The outer contour of the mounting seat 220 is adapted to the groove of the connecting part 120 so that the mounting seat 220 can be firmly installed in the groove of the connecting part 120. The two mounting seats 220 are respectively abutted in the groove of the connecting part 120 and are coaxially arranged. The pin shaft 210 passes through the two mounting seats 220 and is suitable for hingedly connecting the connecting parts 120 of the two pliers bodies. By arranging the two mounting seats 220 coaxially, the pin shaft 210 connects the connecting parts 120 of the two pliers bodies on the same straight line when passing through the mounting seat 220, thereby ensuring that the connecting parts 120 of the two pliers bodies can rotate relative to each other within a certain angle range while maintaining a stable connection relationship.

[0055] Further, such as Figure 7 As shown, the pin 210 is a columnar structure, and the first fixing portion 211 and the second fixing portion 212 are fixedly provided at both ends of the pin 210. After the pin 210 passes through the two mounting seats 220, the first fixing portion 211 and the second fixing portion 212 prevent the pin 210 from being separated from the two mounting seats 220, thereby hingedly connecting the connecting portions 120 of the two pliers. Connecting the connecting portion 120 by means of the pin 210 can efficiently transfer the pressure from the hand-held portion 110 to the clamping portion 130, reducing the damage of the force, thereby improving the work efficiency. In a possible implementation, an anti-slip portion 111 is provided on the outer wall of the hand-held portion 110, and the material of the anti-slip portion 111 is rubber.

[0056] It should be noted here that the anti-slip portion 111 is wrapped around the outer wall of the hand-holding portion 110. The anti-slip portion 111 can effectively increase the friction between the hand and the hand-holding portion 110, preventing the circlip pliers from accidentally falling off due to hand slipping during use, thereby improving the safety and stability of the operation.

[0057] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A circlip pliers, characterized in that: include: Two caliper bodies, pins and leaf spring mechanisms; The pliers body comprises: a hand-held portion, a connecting portion and a clamping portion, wherein the hand-held portion and the clamping portion are respectively arranged at two opposite ends of the connecting portion; The leaf spring mechanism is arranged between the hand-held parts of the two pliers bodies; The connecting parts of the two calipers are hinged by the pin shaft; a first preset angle α is provided between the planes where the two connecting parts are connected to each other; the opening direction of the angle where the first preset angle α is located faces the leaf spring mechanism; The leaf spring mechanism comprises: a first leaf spring, a second leaf spring and a reinforcement part; the first leaf spring is connected to the second leaf spring through the reinforcement part, and a second preset angle β is set between the first leaf spring and the second leaf spring in the body length direction; the first leaf spring and the second leaf spring are both elastic, and are suitable for the first leaf spring and the second leaf spring to be deformed when the two hand-held parts are close to each other; An anti-slip portion is provided on the outer side wall of the hand-held portion.

2. The circlip pliers according to claim 1, characterized in that: The value range of the first preset angle α is: 10°<α<30°, and the value range of the second preset angle β is: 90°<β<150°.

3. The circlip pliers according to claim 1, characterized in that: A groove is formed at one end of the first leaf spring, a protrusion matching the groove is formed at one end of the second leaf spring, and the second leaf spring is clamped in the groove of the first leaf spring through the protrusion.

4. The circlip pliers according to claim 3, characterized in that: The reinforcement part is a rubber band. The reinforcement portion is sleeved at the connection between the second leaf spring and the first leaf spring.

5. The circlip pliers according to claim 1, characterized in that: The main body of the handheld part is in a long arc-shaped structure.

6. The circlip pliers according to claim 1, characterized in that: The clamping portion is in a rectangular plate-shaped structure.

7. The circlip pliers according to claim 6, characterized in that: A third preset angle γ is provided between a plane where a surface of the connecting portion connected to the clamping portion is located and a plane where the clamping portion is located.

8. The circlip pliers according to claim 1, characterized in that: Two mounts are also included; The two mounting seats are respectively arranged on opposite sides of the two connecting parts; and the two mounting seats are coaxially arranged; The pin passes through the two mounting seats and is suitable for hingedly connecting the connecting parts of the two caliper bodies.

9. The circlip pliers according to claim 5, characterized in that: The anti-slip part wraps the outer side wall of the hand-held part; the material of the anti-slip part is rubber.

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