Snap spring pliers with opening locking and inside and outside clamping switching functions

Abstract

The utility model relates to the technical field of manual hardware tools, in particular to a pair of snap spring pliers with opening locking and internal and external clamping conversion functions, which comprises a fixed handle, a positioning groove with a special-shaped structure is arranged in the position, close to the upper end, of the fixed handle, and a gear shifting pin matched with the positioning groove is assembled in the positioning groove. A rotating pin of an integrated structure is fixedly arranged at the rear end of the gear shifting pin, a movable handle is rotationally connected to the rotating pin, and a detachable conversion clamping head is installed on the gear shifting pin on the front side of the fixed handle. A fixing pin is fixedly arranged on the rear side face of the fixed handle, a rotatable locking rod of an L-shaped structure is arranged on the fixing pin in a sleeved mode, a plurality of sets of tooth grooves are formed in the side face, close to the locking rod, of the movable handle, and micro teeth are arranged at the end, attached to the tooth grooves, of the locking rod. The clamp spring mounting and dismounting device is convenient to operate, diversified in function and suitable for clamp spring mounting and dismounting work in various working environments, stability and multifunctionality in the operation process are achieved through the innovative structural design, and working efficiency and user experience are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to manual hardware tool technical field, specifically, relate to a kind of spring clamp pliers with opening locking and inside and outside card conversion function. BACKGROUND

[0002] Spring clamp pliers are special tools used to install and remove snap springs (also known as retaining rings or clamps). As a kind of fastener, snap springs are installed in the shaft slot or hole slot of a component to constrain the axial movement of the component. Spring clamp pliers are tools specifically designed for installing and removing snap springs, and their appearance belongs to the category of needle-nose pliers. The plier head can adopt various forms such as inner straight, outer straight, inner bent, and outer bent. Spring clamp pliers are mainly divided into two categories: outer spring clamp pliers and inner spring clamp pliers. Outer spring clamp pliers, also known as shaft spring clamp pliers, are used to disassemble and assemble shaft-external snap springs. Inner spring clamp pliers, also known as hole-internal snap spring pliers, are used to disassemble and assemble hole-internal snap springs.

[0003] Currently, the spring clamp pliers on the market often have single functions and lack flexible opening locking mechanisms, which can easily be accidentally opened due to external forces during use, affecting operation effectiveness and work efficiency. At the same time, most spring clamp pliers only support single inner or outer card functions and cannot be quickly switched according to actual needs, limiting their application range. Therefore, it is particularly important to develop a spring clamp pliers that can safely lock the opening and quickly switch between inner and outer card functions. SUMMARY

[0004] To address the existing deficiencies, the utility model provides a kind of spring clamp pliers with opening locking and inner and outer card conversion function, the spring clamp pliers operation is convenient, and it is suitable for the installation and disassembly work of snap spring in a variety of working environments, through the innovative structure design, the stability and multifunctionality in the operation process are realized, and work efficiency and user experience are greatly improved.

[0005] To achieve the above purpose, the utility model adopts the technical scheme:

[0006] A spring clamp pliers with opening locking and inner and outer card conversion function, comprising a fixed handle and a movable handle, a positioning groove with a special shape is formed inside the fixed handle near the upper end, a shift pin matched with the positioning groove is assembled inside the positioning groove, a rotating pin with an integrated structure is fixed at the rear end of the shift pin, the movable handle is rotatably connected to the rotating pin, a second spring head is fixed at the upper end of the movable handle, a detachable conversion head is installed on the shift pin of the front side of the fixed handle, a first spring head with the same specifications as the second spring head is fixed at the upper end of the conversion head.

[0007] The rear side of the fixed handle is provided with a fixing pin, a rotatable L-shaped locking rod is sleeved on the fixing pin, and the locking rod is located on the right side of the movable handle.

[0008] Further, a torsional spring is arranged at the connection between the locking rod and the fixing pin, one end of the torsional spring is fixedly connected with the locking rod, and the other end is fixedly connected with the fixing pin.

[0009] Further, the tooth grooves are arranged on an arc-shaped surface of the movable handle, and a plurality of the tooth grooves are uniformly arranged along the arc-shaped surface.

[0010] Further, a gear shifting adjusting groove matched with the shape of the gear shifting pin is arranged in the conversion clamp head, and the conversion clamp head is detachably connected with the gear shifting pin through the gear shifting adjusting groove.

[0011] Further, the first clamp spring head and the second clamp spring head are located on the vertical central plane of the fixed handle.

[0012] Further, the fixed handle and the lower half of the movable handle are both sleeved with a plastic handle sleeve (not shown in the figure).

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The fixed handle is provided with a fixing pin and a rotatable L-shaped locking rod on the rear side, and a plurality of tooth grooves are arranged on the movable handle, so that the opening locking function of the clamp spring pliers is realized, the clamp spring pliers are effectively prevented from being accidentally opened due to external force during operation, and the stability during operation is ensured.

[0015] 2. In the utility model, the conversion clamp head is detachably connected with the gear shifting pin through the gear shifting adjusting groove, the user can adjust the position of the conversion clamp head on the gear shifting pin according to actual needs, the opening amount of the conversion clamp head and the fixed handle can be adjusted by converting the position of the fixed handle left and right, the conversion of the outer clamp and the inner clamp functions is realized, the same tool can adapt to the installation requirements of different types of clamp springs, the tool does not need to be replaced, the work efficiency is improved, and the clamp spring installation and disassembly work in various working environments is suitable.

[0016] 3. The utility model has a simple structure, adopts a modular detachable structure, is convenient to operate, the operation process is intuitive and easy to understand, the operation complexity is reduced, the work efficiency and user experience are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model.

[0018] Figure 2 It is another angle structure schematic view of the utility model.

[0019] Figure 3 It is disassembling structure schematic view of the utility model.

[0020] Figure 4 It is structure schematic view of the shift leg in the utility model.

[0021] Figure 5 It is structure schematic view of the fixed leg in the utility model.

[0022] Figure 6 It is structure schematic view of the shift pin in the utility model.

[0023] Figure 7 It is structure schematic view of the movable leg in the utility model.

[0024] Figure 8 It is structure schematic view of the lock rod in the utility model.

[0025] In the drawing: 1, conversion chuck; 2, fixed handle; 3, movable handle; 4, locking rod; 5, shift pin; 6, first spring head; 7, shift adjustment groove; 8, positioning groove; 9, fixed pin; 10, rotating pin; 11, second spring head; 12, pin hole; 13, micro tooth slot; 14, micro tooth. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0027] Embodiment:

[0028] As shown in Figures 1 to 8 A spring clamp with open locking and inside and outside conversion functions, comprising fixed handle 2 and movable handle 3, fixed handle 2 is internally provided with a shaped structure positioning groove 8 near the upper end, the positioning groove 8 is internally assembled with a shift pin 5 matched therewith, the shift pin 5 is provided at the rear end with an integrated structure rotating pin 10, the rotating pin 10 is rotatably connected with movable handle 3, the movable handle 3 is provided at the upper end with a second spring head 11, the shift pin 5 on the front side of fixed handle 2 is provided with a detachable conversion chuck 1, the conversion chuck 1 is provided at the upper end with a first spring head 6 of the same specification as the second spring head 11;

[0029] A fixing pin 9 is fixed on the rear side of the fixed handle 2, and a rotatable L-shaped locking rod 4 is sleeved on the fixing pin 9, and the locking rod 4 is located on the right side of the movable handle 3. A plurality of tooth grooves 13 are formed on the side of the movable handle 3 close to the locking rod 4, and a micro-tooth 14 is formed on the end of the locking rod 4 in contact with the tooth groove 13, and the micro-tooth 14 is in meshing connection with the tooth groove 13. Through the fixing pin 9 and the rotatable L-shaped locking rod 4 arranged on the rear side of the fixed handle 2, cooperating with the plurality of tooth grooves 13 on the movable handle 3, the opening locking function of the spring clamp is realized, the micro-tooth 14 at one end of the locking rod 4 is in meshing connection with the tooth groove 13, which ensures that the movable handle 3 can be stably connected with the locking rod 4, ensures stable locking, and prevents accidental opening. The design solves the problem that the existing spring clamp often has single function, lacks flexible opening locking mechanism, is easily accidentally opened due to external force during use, affects operation effect and work efficiency, and most spring clamps only support single inner clamping or outer clamping function, cannot be quickly switched according to actual needs, and limits the application range.

[0030] In the embodiment, a torsional spring is arranged at the connection between the locking rod 4 and the fixing pin 9, and one end of the torsional spring is fixedly connected with the locking rod 4, and the other end is fixedly connected with the fixing pin 9. The arrangement of the torsional spring makes the locking rod 4 always have a tendency to move towards the tooth groove 13, ensures that the micro-tooth 14 on the locking rod 4 can always be connected with the tooth groove 13, guarantees the locking effect, and enables the locking rod 4 to automatically reset when not affected by external force, thereby facilitating the next use and improving the convenience of use.

[0031] In the embodiment, the tooth groove 13 is arranged on an arc surface of the movable handle 3, and a plurality of tooth grooves 13 are uniformly arranged along the arc surface. The arc-shaped tooth grooves 13 can always be in contact with the locking rod 4 during the rotation of the movable handle 3, and the locking effect of the locking rod 4 is ensured.

[0032] In the embodiment, a shift adjusting groove 7 matched with the shape of the shift pin 5 is formed in the inside of the conversion clamp head 1, and the conversion clamp head 1 is detachably connected with the shift pin 5 through the shift adjusting groove 7. Through the shift adjusting groove 7, the conversion clamp head 1 and the shift pin 5 are detachably connected, allowing the user to adjust the position of the conversion clamp head 1 on the shift pin 5 according to the actual needs, and the conversion clamp head 1 can be converted between the left and right positions of the fixed handle 2, thereby adjusting the opening amount of the conversion clamp head 1 and the fixed handle 2, realizing the conversion of the outer clamping and inner clamping functions, and being able to adapt to the installation and removal of the outer spring and the inner spring.

[0033] In the embodiment, the first clamp head 6 and the second clamp head 11 are located on the vertical central plane of the fixed handle 2. This design enables the first clamp head 6 and the second clamp head 11 to align with the holes on the outer spring and the inner spring during use, and realize the clamping and fixing of the outer spring and the inner spring.

[0034] In the embodiment, the fixed handle 2 and the lower half of the movable handle 3 are sleeved with plastic handle sleeves (not shown in the figure). The plastic handle sleeves have the characteristics of softness and non-slip, and can provide users with more comfortable gripping experience. When the spring clamp pliers are used for a long time, the plastic handle sleeves can effectively reduce hand fatigue and discomfort. At the same time, the plastic handle sleeves can increase the friction between the handle and the hand to prevent slipping during use.

[0035] The working principle of the spring clamp pliers with the opening locking and inside-outside clamping conversion function is as follows:

[0036] During use, the user first adjusts the position of the conversion clamp head 1 on the shift pin 5 through the shift adjustment groove 7 according to the needs, to realize the conversion of the inside-outside clamping function. Ensure that the opening amount of the conversion clamp head 1 and the fixed handle 2 is moderate, so as to facilitate the installation and disassembly of the spring. Align the clamp opening of the spring clamp pliers with the spring, and press the movable handle 3 with force, so that the first spring head 6 and the second spring head 11 clamp the spring. During this process, the movable handle 3 rotates, and the micro teeth 14 on the locking rod 4 will automatically engage with the tooth groove 13 on the movable handle 3. After the movable handle 3 is released, the movable handle 3 will not automatically open, so as to realize the locking of the opening, and there is no need to continuously press the movable handle 3. Then install the spring, and after installation, press the lower end of the locking rod 4. The locking rod 4 rotates along the fixed pin 9, the micro teeth 14 on the upper end of the locking rod 4 are separated from the tooth groove 13, the handle is automatically opened, and the spring is clamped into place.

[0037] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description, and all the embodiments cannot be exhausted here. Any changes or variations derived from the technical solutions of the utility model still fall within the protection scope of the utility model.

Claims

1. A card spring pliers with open locking and inside-out conversion function, comprising a fixed handle (2) and a movable handle (3), characterized in that: The fixed handle (2) is internally provided with a special-shaped positioning groove (8) near the upper end, the positioning groove (8) is internally fitted with a shift pin (5) matched therewith, the rear end of the shift pin (5) is fixedly provided with a one-piece rotating pin (10), the rotating pin (10) is rotatably connected with a movable handle (3), the upper end of the movable handle (3) is fixedly provided with a second snap spring head (11), the shift pin (5) on the front side of the fixed handle (2) is installed with a detachable conversion clamp head (1), the upper end of the conversion clamp head (1) is fixedly provided with a first snap spring head (6) with the same specification as the second snap spring head (11). The rear side of the fixed handle (2) is fixedly provided with a fixed pin (9), the fixed pin (9) is sleeved with a rotatable L-shaped locking rod (4), and the locking rod (4) is located on the right side of the movable handle (3), a plurality of tooth grooves (13) are formed on the side of the movable handle (3) near the locking rod (4), a micro tooth (14) is formed on the end of the locking rod (4) abutting the tooth groove (13), and the micro tooth (14) is in meshing connection with the tooth groove (13).

2. The clamping pincers with the opening locking and inside-outside conversion function according to claim 1, characterized in that: The locking rod (4) and the fixed pin (9) are connected with a torsional spring, one end of the torsional spring is fixedly connected with the locking rod (4), and the other end is fixedly connected with the fixed pin (9).

3. The clamping pincers with the opening locking and inside-outside conversion function according to claim 1, characterized in that: The tooth groove (13) is arranged on an arc surface of the movable handle (3), and a plurality of tooth grooves (13) are uniformly arranged along the arc surface.

4. The clamping pincers with the opening locking and inside-outside conversion function according to claim 1, characterized in that: The conversion clamp head (1) is internally provided with a shift adjusting groove (7) matched with the shape of the shift pin (5), and the conversion clamp head (1) is detachably connected with the shift pin (5) through the shift adjusting groove (7).

5. The clamping pliers with the opening locking and inside-outside conversion function according to claim 1, characterized in that: The first snap spring head (6) and the second snap spring head (11) are in position correspondence and are located on the vertical central plane of the fixed handle (2).

6. The clamping pliers with the opening locking and inside-outside conversion function according to claim 1, characterized in that: The lower half of the fixed handle (2) and the movable handle (3) are sleeved with a plastic handle sleeve.

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