Lockable water pump clamp with touch function

Abstract

The invention relates to the technical field of water pump pincers, and provides a lockable water pump pincer with a touch function, which comprises a movable pincer body and a fixed pincer body, handles of the movable pincer body and the fixed pincer body are connected through a connecting rod, a containing hole is formed in the handle of the movable pincer body, one end of the connecting rod is hinged to the fixed pincer body, and the other end of the connecting rod is hinged to the fixed pincer body. The other end of the connecting rod penetrates into the containing hole and can slide in the containing hole along with opening and closing of the movable clamp body and the fixed clamp body, a plurality of arc grooves are evenly formed in the connecting rod in the length direction of the connecting rod, and locking balls matched with the arc grooves in radian are rotatably connected to the positions, where the arc grooves are located, in the containing hole. The locking ball is rotationally connected with the side wall of the containing hole through an eccentrically-arranged rotating shaft and can enter any arc groove through rotation to abut against the connecting rod and the containing hole. The clamp has the beneficial effects that the positions of the movable clamp body and the fixed clamp body can be locked by rotating the locking ball, so that the hand can better apply force, and the clamping force of the jaw is stronger.

Description

Technical Field

[0001] The present invention relates to the technical field of water pump pliers, and in particular to a lockable water pump pliers with a tactile function. Background Art

[0002] When using water pump pliers, the size of the jaws needs to be adjusted. As the size of the jaws changes, the positional relationship between the two handles will also change accordingly. As the distance angle between the two handles changes, the handles will no longer be suitable for gripping, and it is difficult for the human hand to maintain a stable clamping force when exerting force. The user needs to frequently manually adjust the handle position and the gripping position, which reduces work efficiency. It is particularly inconvenient in narrow spaces or emergency situations. It cannot be operated with one hand, and there is a risk of accidental falling off, and it is not capable of continuous force application tasks. In addition, when adjusting the opening size of the water pump pliers, it is necessary to align the connecting shaft with the naked eye, and when in use, because the aperture of each gear is the same, it is easy to cause it to slide directly into the end gear. After the water pump pliers are used at one workstation, they need to be readjusted when returning to the workstation, which is very inconvenient to operate and has low adjustment efficiency. Summary of the Invention

[0003] The present invention proposes a lockable water pump pliers with a tactile function, which can lock the position of the movable pliers body and the fixed pliers body by rotating the locking ball, so that the hand can exert force better, the clamping force of the jaws is stronger, and the gear change can be sensed by the touch of the hand during the process of adjusting the size of the jaws.

[0004] To this end, the technical solutions adopted are as follows: A lockable water pump pliers with a tactile function comprises a movable pliers body and a fixed pliers body, the handles of the movable pliers body and the fixed pliers body are connected by a connecting rod, a receiving hole is provided on the handle of the movable pliers body, one end of the connecting rod is hinged to the fixed pliers body, and the other end penetrates into the receiving hole and can slide in the receiving hole as the movable pliers body and the fixed pliers body are opened and closed, a plurality of arc grooves are evenly provided on the connecting rod along its length direction, a locking ball matching the curvature of the arc groove is rotatably connected to the position of the arc groove inside the receiving hole, the locking ball is rotatably connected to the side wall of the receiving hole through an eccentrically arranged rotating shaft and can rotate into any arc groove to press the connecting rod against the receiving hole.

[0005] A further technical solution is that the connecting rod is a split structure, including an articulated section and an insertion section, one end of the articulated section is hinged to the fixed caliper body, and the other end is provided with a guide groove and a spring groove arranged along its length direction, one end of the insertion section is slidably connected to the accommodating hole, and the other end is fixed with a guide rod arranged along its length direction, the guide rod is inserted into the guide groove, and the spring groove has a telescopic spring inside, one end of the telescopic spring is fixed inside the spring groove, and the other end is fixed to the end face of the guide rod on the insertion section, and when the guide rod is fully inserted into the guide groove, the telescopic spring is in a natural state.

[0006] A further technical solution is that a limiting rod is fixed inside the accommodating hole, a limiting slide is provided on the connecting rod, and the limiting rod slides in the limiting slide as the movable clamp body and the fixed clamp body open and close.

[0007] A further technical solution is that both ends of the limiting slide are closed structures.

[0008] A further technical solution is that the movable clamp body and the fixed clamp body are connected by a connecting shaft, the connecting shaft is fixed on the movable clamp body, an adjustment hole is opened on the fixed clamp body, the connecting shaft can slide and lock in the adjustment hole, and the shape of the adjustment hole is formed by the connecting shaft moving along a wavy trajectory.

[0009] A further technical solution is that when the connecting shaft enters each lockable position in the adjustment hole, the locking ball can rotate into an arc groove to press the connecting rod against the receiving hole.

[0010] A further technical solution is that the fixed caliper body is provided with a plurality of arc-shaped snap-fitting grooves arranged in parallel, and the movable caliper body is fixed with snap-fitting blocks matching the snap-fitting grooves, and the snap-fitting blocks can be inserted into the corresponding snap-fitting grooves in sequence as the connecting shaft slides along the adjustment hole.

[0011] A further technical solution is that a locking knob is fixed on the locking ball, and the locking knob passes through the side wall of the accommodating hole and protrudes from the handle of the movable pliers body.

[0012] The working principle and beneficial effects of this application are: 1. By rotating the locking ball, the connecting rod and the receiving hole can be locked, thereby forming a triangular stable structure between the connecting rod, the movable clamp body and the fixed clamp body. This allows the water pump pliers to maintain a stable clamping force even after the handle position changes. It can be operated with one hand to prevent intentional loosening. There is no need to repeatedly adjust the grip position, which improves work efficiency and avoids the risk of the water pump pliers loosening and losing control.

[0013] 2. The locking ball and the arc groove are locked by interference fit. On the one hand, the operation is simple. You only need to rotate the locking ball to easily lock and loosen the movable pliers body and the fixed pliers body, ensuring the continuity of the water pump pliers shifting. At the same time, the spherical structure is not restricted by the angle of the connecting rod and can be rotated into the arc groove. At the same time, a certain angle and error compensation can be performed. Even if the water pump pliers are used for a long time and the joint axis points are loose to a certain extent, it will not affect the cooperation between the locking ball and the arc groove, ensuring a stable connection.

[0014] 3. At the same time, when the locking ball rotates into the arc groove to lock, it will generate an outward expansion force on the movable clamp body and the fixed clamp body, thereby increasing the clamping force at the jaws.

[0015] 4. The adjustment opening has a wavy structure, so the axial position of the connecting shaft of each two adjacent gears is different. When adjusting the opening size and shifting gears, you can clearly feel the connecting shaft sliding up or down through the touch of your hand. Therefore, you can clearly know how many gears have been changed through this touch, and thus calculate the opening size of the currently used gear. It is easy to operate and no longer requires naked eye observation. The required opening size can also be clearly recorded through the perceived number of gear shifts, so the opening amount can be adjusted more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present application will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a structural diagram of the locking ball released in this application; Figure 3 This is a schematic diagram of the structure of the movable jaw body and the fixed jaw body of the present application being opened; Figure 4 This is a schematic diagram of the structure of the jaws opening described in this application; Figure 5 This is a front view structural diagram of the movable clamp body described in this application; Figure 6 This is a schematic diagram of the reverse view of the movable clamp body described in this application; Figure 7 This is a schematic diagram of the top view of the movable clamp body described in this application; Figure 8 This is a schematic structural diagram of the fixed clamp body described in this application.

[0018] In the figure: 1. movable clamp body; 11. accommodating hole; 12. clamping block; 111. limiting rod; 2. fixed clamp body; 20. adjusting hole; 21. clamping groove; 3. connecting rod; 31. arc groove; 32. hinge section; 321. guide groove; 322. spring groove; 33. insertion section; 331. guide rod; 34. telescopic spring; 35. limiting slide; 4. locking ball; 41. rotating shaft; 42. locking knob; 5. connecting shaft. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0020] like Figures 1-8 As shown, a lockable water pump pliers with a tactile function includes an active caliper body 1 and a fixed caliper body 2, the handles of the active caliper body 1 and the fixed caliper body 2 are connected by a connecting rod 3, a receiving hole 11 is provided on the handle of the active caliper body 1, one end of the connecting rod 3 is hinged to the fixed caliper body 2, and the other end is inserted into the receiving hole 11 and can slide in the receiving hole 11 as the active caliper body 1 and the fixed caliper body 2 are opened and closed, a plurality of arc grooves 31 are evenly provided on the connecting rod 3 along its length direction, and a locking ball 4 matching the curvature of the arc groove 31 is rotatably connected to the inside of the receiving hole 11 at the position of the arc groove 31, the locking ball 4 is rotatably connected to the side wall of the receiving hole 11 through an eccentrically arranged rotating shaft 41 and can rotate into any arc groove 31 to press the connecting rod 3 against the receiving hole 11.

[0021] The present invention relates to a method for locking the movable jaw body 1 and the fixed jaw body 2 in each gear position of the water pump pliers through the locking ball 4 and the connecting rod 3, so as to ensure the stability of the jaws and facilitate the application of force, and at the same time realize one-handed operation. Specifically, the locking ball 4 is rotated around the rotating shaft 41 to disengage the locking ball 4 from the arc groove 31. At this time, when the movable jaw body 1 and the fixed jaw body 2 are opened and closed, the connecting rod 3 can slide arbitrarily in the receiving hole 11 without restricting the movable jaw body 1 and the fixed jaw body 2. When the movable jaw body 1 and the fixed jaw body 2 determine that the jaw size is no longer movable, the locking ball 4 is rotated again to enter the adjacent arc groove 31 at this time and gradually rotate to completely tighten the connecting rod 3, thereby forming a triangular stable structure between the connecting rod 3, the movable jaw body 1 and the fixed jaw body 2, locking the movable jaw body 1 and the fixed jaw body 2. The whole process only needs to be completed by rotating the locking ball 4, which is simple and quick to operate, ensuring the continuity of the water pump pliers shifting, and at the same time, increasing the stability of the water pump pliers when working and the clamping force of the jaws.

[0022] like Figure 3 As shown, the connecting rod 3 is a split structure, including an articulated section 32 and an insertion section 33. One end of the articulated section 32 is hinged to the fixed caliper body 2, and the other end is provided with a guide groove 321 and a spring groove 322 arranged along its length direction. One end of the insertion section 33 is slidably connected to the accommodating hole 11, and the other end is fixed with a guide rod 331 arranged along its length direction. The guide rod 331 is inserted into the guide groove 321, and a telescopic spring 34 is provided inside the spring groove 322. One end of the telescopic spring 34 is fixed inside the spring groove 322, and the other end is fixed to the end face of the guide rod 331 on the insertion section 33. When the guide rod 331 is fully inserted into the guide groove 321, the telescopic spring 34 is in a natural state.

[0023] When the movable jaw body 1 and the fixed jaw body 2 are adjusted to the opening position of the jaws, the movable jaw body 1 and the fixed jaw body 2 usually need to be opened at a larger angle so that the hinge point of the two can be freed from the restriction and the jaws can be adjusted. In this case, the length of the connecting rod 3 needs to be longer, so that when the two are closed again, a longer connecting rod 3 will protrude from the accommodating hole 11. This protruding connecting rod 3 may affect the work of the water pump pliers. Therefore, the connecting rod 3 adopts a plug-in split structure. When the handles of the movable jaw body 1 and the fixed jaw body 2 are opened at a larger angle, the guide rod 331 and the guide groove 321 are plugged in and the guide rod 331 is pulled out to increase the overall length of the connecting rod 3, thereby ensuring the connection between the connecting rod 3 and the movable jaw body 1 and the fixed jaw body 2. When the movable jaw body 1 and the fixed jaw body 2 are closed, the guide rod 331 is inserted into the guide groove 321, and the overall length of the connecting rod 3 is shortened, which will not interfere with the work of the water pump pliers.

[0024] Preferably, when the water pump pliers need to adjust the opening and the angle of the movable pliers body 1 and the fixed pliers body 2 is expanded, the guide rod 331 slides out, and when it is normally retracted and worked, the guide rod 331 is always located inside the guide groove 321 to ensure the locking rigidity. Specifically, the angle of the movable pliers body 1 and the fixed pliers body 2 is expanded, the guide rod 331 is pulled out, and at the same time, the telescopic spring 34 is stretched. Even in the case of the maximum opening except for disassembly, a part of the guide rod 331 is always located inside the guide groove 321 to ensure the integrity of the connecting rod 3. After the jaws are fixed in position, the movable pliers body 1 and the fixed pliers body 2 are retracted, and under the action of the telescopic spring 34, the guide rod 331 is automatically reset, saving operation time and effort and ensuring the continuity of the water pump pliers shifting.

[0025] Among them, one embodiment of the connecting rod 3 sliding in the accommodating groove is that a limit rod 111 is fixed inside the accommodating hole 11, and a limit slide 35 is provided on the connecting rod 3. The limit rod 111 slides in the limit slide 35 as the movable clamp body 1 and the fixed clamp body 2 open and close. Due to the influence of the path of the limit rod 111 when the movable clamp body 1 and the fixed clamp body 2 open and close, the limit slide 35 is arranged at an angle on the connecting rod 3. At the same time, the two ends of the limit slide 35 are closed structures. The closed position is the extreme position of the limit rod 111 when the movable clamp body 1 and the fixed clamp body 2 have the maximum and minimum opening and closing angles. At this position, the limit rod 111 is closed to prevent the limit rod 111 from falling out of the limit slide 35 due to excessive force acting on the water pump clamp, thereby further ensuring the stability of the entire water pump clamp.

[0026] like Figure 4-Figure 8 As shown, the movable caliper body 1 and the fixed caliper body 2 are connected by a connecting shaft 5, which is fixed to the movable caliper body 1. The fixed caliper body 2 is provided with an adjustment hole 20, in which the connecting shaft 5 can slide and lock. The shape of the adjustment hole 20 is formed by the connecting shaft 5 moving along a wavy trajectory. The adjustment opening is wavy, so the center position of the connecting shaft 5 is different for each two adjacent gears. When adjusting the opening size, the connecting shaft 5 can be clearly felt by touch when shifting gears. Therefore, it is possible to clearly know how many gears have been changed by this touch, and thus calculate the opening size of the gear currently in use. The operation is convenient and no longer requires visual observation. The required opening size can also be clearly recorded by the number of gear shifts.

[0027] For example, when the second gear is currently in use, after the working position is changed, it can be clearly felt that it has slipped two gears backward. When returning to the previous working position, it only needs to slide forward two gears again. The operation is simple and fast, and the ability to perceive the sliding position of the connecting shaft 5 by touch provides great convenience for the use of water pump pliers.

[0028] like Figure 3-Figure 4 As shown, different water pump pliers shaft structures need to be adapted during use. During assembly, when the connecting shaft 5 enters each lockable position in the adjusting hole 20, the locking ball 4 can be rotated into an arc groove 31 to press the connecting rod 3 against the accommodating hole 11. Moreover, due to the spherical design and the use of an eccentric rotating shaft 41, even if there is a certain deformation in the joints and other positions due to repeated use of the water pump pliers, it will not affect the locking ball 4 from rotating into the arc groove 31 to press and form an interference fit. During the initial assembly, there is a certain surplus in the diameter range of the locking ball 4. Therefore, even if the axis point position is loose to a certain extent, it will not affect the work done by the locking ball 4, thereby ensuring the locking effect of the movable pliers body 1 and the fixed pliers body 2, and at the same time ensuring the overall service life of the water pump pliers.

[0029] like Figure 5-Figure 8 As shown, the fixed caliper body 2 is provided with a plurality of arc-shaped snap-in grooves 21 arranged in parallel, and the movable caliper body 1 is fixed with snap-in blocks 12 that match the snap-in grooves 21. The snap-in blocks 12 can be sequentially inserted into the corresponding snap-in grooves 21 as the connecting shaft 5 slides along the adjustment hole 20. When adjusting the size of the jaws, it is only necessary to rotate the movable caliper body 1 to rotate the snap-in blocks 12 out of the snap-in grooves 21, and then drive the movable caliper body 1 to drive the connecting shaft 5 to slide in the adjustment hole 20. As the connecting shaft 5 moves up and down in a wave-like manner, the specific gear position is sensed by touch. When the appropriate gear position is reached, the snap-in blocks 12 are rotated into the corresponding snap-in groove 21 at that position.

[0030] like Figure 6 As shown, a locking knob 42 is fixed on the locking ball 4, and the locking knob 42 passes through the side wall of the accommodating hole 11 and protrudes from the handle of the movable pliers 1. Sufficient space is left on the side wall of the accommodating hole 11 for the locking knob 42 to rotate arbitrarily around the rotating axis 41, further ensuring the flexibility of the rotation range and angle when the locking ball 4 is pressed against the arc groove 31, and the skill can rotate forward to enter the arc groove 31, and can also reverse to enter the arc groove 31.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lockable water pump pliers with a touch function, comprising a movable pliers body (1) and a fixed pliers body (2), characterized in that: The handles of the movable caliper body (1) and the fixed caliper body (2) are connected via a connecting rod (3). A receiving hole (11) is provided on the handle of the movable caliper body (1). One end of the connecting rod (3) is hinged to the fixed caliper body (2), and the other end is inserted into the receiving hole (11) and can slide in the receiving hole (11) as the movable caliper body (1) and the fixed caliper body (2) are opened and closed. A plurality of arc grooves (31) are evenly provided on the connecting rod (3) along its length. A locking ball (4) matching the arc of the arc groove (31) is rotatably connected to the receiving hole (11) at the position of the arc groove (31). The locking ball (4) is rotatably connected to the side wall of the receiving hole (11) via an eccentrically arranged rotating shaft (41) and can rotate into any arc groove (31) to press the connecting rod (3) against the receiving hole (11).

2. The lockable water pump pliers with touch function according to claim 1, characterized in that: The connecting rod (3) is a split structure, comprising a hinged section (32) and an insertion section (33). One end of the hinged section (32) is hinged to the fixed clamp body (2), and the other end is provided with a guide groove (321) and a spring groove (322) arranged along its length direction. One end of the insertion section (33) is slidably connected to the accommodating hole (11), and the other end is fixed with a guide rod (331) arranged along its length direction. The guide rod (331) is inserted into the guide groove (321). The spring groove (322) has a telescopic spring (34). One end of the telescopic spring (34) is fixed in the spring groove (322), and the other end is fixed to the end face of the insertion section (33) where the guide rod (331) is located. When the guide rod (331) is fully inserted into the guide groove (321), the telescopic spring (34) is in a natural state.

3. The lockable water pump pliers with touch function according to claim 1, characterized in that: A limiting rod (111) is fixed inside the accommodating hole (11), a limiting slideway (35) is provided on the connecting rod (3), and the limiting rod (111) slides in the limiting slideway (35) as the movable clamp body (1) and the fixed clamp body (2) open and close.

4. The lockable water pump pliers with touch function according to claim 3, characterized in that: Both ends of the limiting slideway (35) are closed structures.

5. The lockable water pump pliers with touch function according to claim 1, characterized in that: The movable caliper body (1) and the fixed caliper body (2) are connected via a connecting shaft (5), the connecting shaft (5) being fixed to the movable caliper body (1), and an adjustment hole (20) being provided on the fixed caliper body (2), the connecting shaft (5) being able to slide and lock in the adjustment hole (20), and the shape of the adjustment hole (20) being formed by the connecting shaft (5) moving along a wavy trajectory.

6. The lockable water pump pliers with touch function according to claim 5, characterized in that: When the connecting shaft (5) enters each lockable position in the adjustment hole (20), the locking ball (4) can rotate into an arc groove (31) to press the connecting rod (3) against the receiving hole (11).

7. The lockable water pump pliers with touch function according to claim 5, characterized in that: The fixed caliper body (2) is provided with a plurality of arc-shaped snap-fitting grooves (21) arranged in parallel, and the movable caliper body (1) is fixed with snap-fitting blocks (12) matching the snap-fitting grooves (21). The snap-fitting blocks (12) can be sequentially inserted into the corresponding snap-fitting grooves (21) as the connecting shaft (5) slides along the adjustment hole (20).

8. The lockable water pump pliers with touch function according to claim 1, characterized in that: A locking knob (42) is fixed to the locking ball (4), and the locking knob (42) passes through the side wall of the accommodating hole (11) and protrudes from the handle of the movable caliper body (1).

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