Adjustment method of a self-adjusting water pump pliers

Abstract

The present invention relates to the technical field of hand tools, and in particular to a method for adjusting self-adjusting water pump pliers. A method for adjusting self-adjusting water pump pliers, comprising a fixed pliers body and a sliding pliers body, wherein the fixed pliers body and the sliding pliers body are slidably connected, and a quick adjustment mechanism is provided between the fixed pliers body and the sliding pliers body. By arranging an elastic element and a rotary switch in the quick adjustment mechanism, an elastic boss is provided on the elastic element, and an arc boss and a notch are provided on the rotary switch. When the fixed pliers body and the sliding pliers body are compressed, the elastic boss of the elastic element will pop out into the notch of the rotary switch to achieve a locking function; when the rotary switch is turned, the arc boss will compress the elastic boss to make it detach from the notch, so that the water pump pliers can quickly open to the maximum opening amount to achieve a self-adjusting function. It is easy to assemble, has stable performance during use, increases driving force, does not need to be manually adjusted when clamping a workpiece, and achieves an automatic adjustment effect. After use, it is convenient to store and carry.

Description

Technical field:

[0001] The invention relates to the technical field of hand tools, and in particular to an adjustment method for self-adjusting water pump pliers. Background technology:

[0002] Traditional water pump pliers are mainly composed of a fixed pliers body, a sliding pliers body, a rotating pin, etc. The fixed pliers body is provided with a gear slot, and the two are connected together by a rotating pin. When in use, the position of the sliding pliers body is adjusted according to the size of the workpiece to achieve the change of the opening size of the pliers body. During use, the position of the sliding pliers body is repeatedly adjusted to change the opening size to meet the needs of clamping. The operation is cumbersome, inconvenient to use, and inefficient.

[0003] At present, some patents solve the above problems through quick-adjustment mechanisms. For example, the patent application with publication number CN104476427A discloses a self-adjusting water pump pliers. Although it can realize self-adjustment and locking functions, its unlocking pin is arranged on the sliding pliers body, which is troublesome to operate and inconvenient to install. Another example is the patent application with publication number CN216504484U, which discloses a self-adjusting water pump pliers. Although the quick-adjustment mechanism is changed to be arranged between the fixed pliers body and the sliding pliers body, its quick-adjustment mechanism includes connecting rods, springs, torsion springs and other components, and the structure is too complicated, making it very difficult to assemble, and the performance is unstable during use, and the automatic adjustment performance cannot be achieved.

[0004] In summary, how to achieve convenient self-adjustment of water pump pliers has become a technical problem that urgently needs to be solved in the industry. Summary of the invention:

[0005] In order to make up for the deficiencies of the prior art, the present invention provides an adjustment method for self-adjusting water pump pliers, which solves the problems of complex structure, difficult assembly and unstable performance of the quick adjustment mechanism in the prior self-adjusting water pump pliers.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] A method for adjusting self-adjusting water pump pliers comprises a fixed pliers body and a sliding pliers body, the fixed pliers body and the sliding pliers body are slidably connected, a quick adjustment mechanism is arranged between the fixed pliers body and the sliding pliers body, an elastic element and a rotary switch are arranged in the quick adjustment mechanism, an elastic boss is arranged on the elastic element, and an arc boss and a notch are arranged on the rotary switch. When the fixed pliers body and the sliding pliers body are compressed, the elastic boss of the elastic element will pop out into the notch of the rotary switch to realize the locking function; when the rotary switch is rotated, the arc boss will compress the elastic boss to make it disengage from the notch, so that the water pump pliers can be quickly opened to the maximum opening amount, thereby realizing the self-adjusting function.

[0008] The quick adjustment mechanism includes a barrel body. The two ends of the barrel body are respectively connected to a front cover and a rear cover. The rear cover is rotatably connected to the sliding clamp body. There are a high-low platform and an opening on the barrel body. A rotary switch is provided on the outer side of the barrel body between the front cover and the rear cover. The inner cavity at the rear end of the rotary switch has an arc-shaped convex platform and a notch. The arc-shaped convex platform of the rotary switch is sleeved on one side of the low platform of the barrel body and aligned with the opening of the barrel body. An elastic element is slidably arranged in the barrel body. The front end of the elastic element passes through the through hole of the front cover and is rotatably connected to the fixed clamp body and is provided with a limit stop block that cooperates with the inner side of the through hole. The rear end of the elastic element is provided with an elastic convex platform that cooperates with the arc-shaped convex platform and the notch of the rotary switch. A spring is arranged between the elastic element and the rear cover.

[0009] The two ends of the barrel body are respectively threadedly connected to the front cover and the rear cover.

[0010] A long slot is provided on the sliding clamp body. The rear cover is rotatably connected to the long slot of the sliding clamp body through a pin. An arc-shaped slot is provided on the handle part of the fixed clamp body. The front end of the elastic element is rotatably connected to the fixed clamp body through a pin.

[0011] A slit is provided at the center of the rear end of the elastic element. One side of the slit is a fixed arm and the other side is an elastic arm. The elastic convex platform is arranged at the rear end of the elastic arm.

[0012] The elastic convex platform is a conical platform, and arc-shaped chamfers are provided on both side edges of the elastic convex platform.

[0013] Transition inclined surfaces are provided on the arc-shaped convex platforms on both sides of the notch.

[0014] The through hole of the front cover is a rectangular hole that cooperates with the front end of the elastic element to prevent the elastic element from rotating.

[0015] A long strip groove mark consistent with the notch of the arc-shaped convex platform is provided on the outer surface of the rotary switch.

[0016] A longitudinal groove is provided on the fixed clamp body. Saw teeth are provided on one side wall of the longitudinal groove. The pawl is arranged on the sliding clamp body through a ratchet pin, and the pawl meshes with the saw teeth on the side wall of the longitudinal groove.

[0017] The present invention adopts the above scheme and has the following beneficial effects:

[0018] In the present invention, by providing a rotary switch and an elastic element, when the notch of the arc-shaped boss of the rotary switch aligns with the opening of the barrel body, the compression of the fixed jaw and the sliding jaw enables the elastic boss of the elastic element to pass through the opening and pop out into the notch, realizing the locking function; when the rotary switch is rotated so that the arc-shaped boss turns above the opening, the elastic boss is compressed back into the inner cavity of the barrel body and slides forward under the action of the spring, enabling the water pump pliers to quickly open to the maximum opening amount. The assembly is easy, the performance is stable during use, the driving force is increased, manual adjustment is not required when clamping a workpiece, achieving the effect of automatic adjustment, and it is convenient to carry after use. Description of the Drawings:

[0019] Figure 1 is a schematic structural view of the present invention.

[0020] Figure 2 is Figure 1 the sectional structural view taken along A-A in

[0021] Figure 3 is a schematic structural view of the fixed jaw of the present invention.

[0022] Figure 4 is a schematic structural view of the sliding jaw of the present invention.

[0023] Figure 5 is a schematic structural view of the barrel body of the present invention.

[0024] Figure 6 is a schematic structural view of the rotary switch of the present invention.

[0025] Figure 7 is a schematic structural view of the elastic element of the present invention.

[0026] In the figure, 1, fixed jaw; 2, sliding jaw; 3, quick adjustment mechanism; 4, barrel body; 5, front cover; 6, rear cover; 7, opening; 8, rotary switch; 9, arc-shaped boss; 10, notch; 11, elastic element; 12, limit stop; 13, elastic boss; 14, spring; 15, fixed arm; 16, elastic arm; 17, arc chamfer; 18, transition slope; 19, rectangular hole; 20, long strip groove mark; 21, longitudinal groove; 22, pawl; 23, ratchet pin. Detailed Embodiment:

[0027] To clearly illustrate the technical features of this solution, the present invention will be elaborated in detail below through specific embodiments and in conjunction with its drawings.

[0028] As Figures 1-7As shown, a method for adjusting a self-adjusting water pump pliers comprises a fixed pliers body 1 and a sliding pliers body 2, wherein the fixed pliers body 1 and the sliding pliers body 2 are slidably connected, and a quick adjustment mechanism 3 is provided between the fixed pliers body 1 and the sliding pliers body 2. An elastic element 11 and a rotary switch 8 are provided in the quick adjustment mechanism 3, an elastic boss 13 is provided on the elastic element 11, and an arc boss 9 and a notch 10 are provided on the rotary switch 8. When the fixed pliers body 1 and the sliding pliers body 2 are compressed, the elastic boss 13 of the elastic element 11 will pop out into the notch 10 of the rotary switch 8 to achieve a locking function; when the rotary switch 8 is rotated, the arc boss 9 will compress the elastic boss 13 to make it disengage from the notch 10, so that the water pump pliers can be quickly opened to the maximum opening amount to achieve a self-adjusting function.

[0029] The quick adjustment mechanism 3 includes a barrel 4, the two ends of which are respectively connected to a front cover 5 and a rear cover 6, the rear cover 6 is rotatably connected to the sliding pliers body 2, the barrel 4 is provided with a high and low platform and an opening 7, a rotary switch 8 is provided on the outer side of the barrel 4 between the front cover 5 and the rear cover 6, the rear end inner cavity of the rotary switch 8 has a circular arc boss 9 and a notch 10, the circular arc boss 9 of the rotary switch 8 is sleeved on the low platform side of the barrel 4 and aligned with the opening 7 of the barrel 4; an elastic element 11 is slidably provided in the barrel 4, the front end of the elastic element 11 passes through the through hole of the front cover 5 and is rotatably connected to the fixed pliers body 1 and is provided with a limit stopper 12 matched with the inner side of the through hole to prevent the elastic element 11 from slipping out of the front cover 5, the rear end of the elastic element 11 is provided with an elastic boss 13 matched with the circular arc boss 9 and the notch 10 of the rotary switch 8, and a spring 14 is provided between the elastic element 11 and the rear cover 5.

[0030] The two ends of the barrel body 4 are respectively threadedly connected to the front cover 5 and the rear cover 6.

[0031] The sliding caliper body 2 is provided with a long groove, and the rear cover 6 is rotatably connected to the long groove of the sliding caliper body 2 through a pin. The handle of the fixed caliper body 1 is provided with an arc groove, and the front end of the elastic element 11 is rotatably connected to the fixed caliper body 1 through a pin.

[0032] The elastic element 11 has a slit at the rear end center, one side of the slit is a fixed arm 15, and the other side is an elastic arm 16. The elastic boss 13 is arranged at the rear end of the elastic arm 16. When no external force is applied, the elastic arm 16 is in an outwardly sprung state. When the elastic boss 13 is squeezed by an external force, the elastic arm 16 can shrink toward the fixed arm 15.

[0033] The elastic boss 13 is a conical boss, so that the elastic element 11 will not be blocked by the opening 7 of the barrel and locked when sliding in the barrel 4. The locking function will only be achieved when the elastic boss 13 pops out through the opening 7 to a sufficient length in the notch 10.

[0034] Both side edges of the elastic boss 13 are provided with arc chamfers 17. Transition inclined surfaces 18 are provided on the arc bosses 9 on both sides of the notch 10. When the rotary switch 8 is rotated to release the lock, it can ensure that the arc boss 9 smoothly compresses the elastic boss 13 back into the inner cavity of the barrel body 4, avoiding jamming.

[0035] The through hole of the front cover 5 is a rectangular hole 19 that matches the front end of the elastic element 11, which is used to prevent the elastic element 11 from rotating, so that the elastic element 11 can only slide axially within the barrel body 4.

[0036] The outer surface of the rotary switch 8 is provided with a long groove mark 20 that is consistent with the notch 10 of the arc boss 9, which is convenient for finding the position of the notch 10 when locking after use.

[0037] The fixed pliers body 1 is provided with a longitudinal groove 21. One side wall of the longitudinal groove 21 is provided with saw teeth. The pawl 22 is arranged on the sliding pliers body 2 through a ratchet pin 23, and the pawl 22 meshes with the saw teeth on the side wall of the longitudinal groove 21.

[0038] Working principle:

[0039] When locking, the fixed pliers body 1 and the sliding pliers body 2 are compressed, and the elastic element 11 compresses the spring 14 and slides backward along the barrel body 4. When the compression limit of the spring 14 is reached, the elastic boss 13 of the elastic element 11 just aligns with the opening 7 of the barrel body 4. At this time, the rotary switch 8 is rotated so that the notch 10 of its arc boss 9 aligns with the opening 7 of the barrel body 4. In this way, the elastic boss 13 of the elastic element 11 will pop out through the opening 7 into the notch 10 to achieve the locking function. The whole water pump pliers has a reduced volume, which is convenient for storage and carrying. When in use, the rotary switch 8 is rotated so that the arc boss 9 rotates above the opening 7, and the elastic boss 13 is compressed back into the inner cavity of the barrel body 4 by the arc boss 9. The elastic element 11 slides forward under the elastic reset action of the spring 14, so that the water pump pliers can quickly open to the maximum opening amount, so that the water pump pliers realizes the self-adjustment function. When clamping a workpiece, there is no need to manually adjust it again, and the tightening or loosening of parts such as screws can be quickly realized.

[0040] The above specific implementation manners cannot be used as a limitation on the protection scope of the present invention. For those skilled in the art of this technology, any alternative improvement or transformation made to the embodiments of the present invention falls within the protection scope of the present invention.

[0041] Where the present invention is not described in detail, it is all well-known technology to those skilled in the art of this technology.

Claims

1. A method for adjusting a self-adjusting water pump pliers, comprising a fixed pliers body and a sliding pliers body, wherein the fixed pliers body and the sliding pliers body are slidably connected, and a quick adjustment mechanism is provided between the fixed pliers body and the sliding pliers body. Features: By arranging an elastic element and a rotary switch in the quick adjustment mechanism, an elastic boss is provided on the elastic element, and an arc boss and a notch are provided on the rotary switch. When the fixed pliers body and the sliding pliers body are compressed, the elastic boss of the elastic element will pop out into the notch of the rotary switch to achieve a locking function; when the rotary switch is rotated, the arc boss will compress the elastic boss to make it disengage from the notch, so that the water pump pliers can be quickly opened to the maximum opening amount, thereby achieving a self-adjusting function.

2. A method for adjusting a self-adjusting water pump pliers according to claim 1, Features: The quick-adjusting mechanism comprises a barrel, the two ends of which are respectively connected to a front cover and a rear cover, the rear cover is rotatably connected to a sliding pliers body, a high and low platform and an opening are arranged on the barrel, a rotary switch is arranged on the outer side of the barrel between the front cover and the rear cover, the inner cavity at the rear end of the rotary switch has an arc boss and a notch, the arc boss of the rotary switch is sleeved on one side of the low platform of the barrel and is aligned with the opening of the barrel; an elastic element is slidably arranged in the barrel, the front end of the elastic element passes through the through hole of the front cover and is rotatably connected to the fixed pliers body and is provided with a limit stopper matched with the inner side of the through hole, the rear end of the elastic element is provided with an elastic boss matched with the arc boss and the notch of the rotary switch, and a spring is arranged between the elastic element and the rear cover.

3. A method for adjusting a self-adjusting water pump pliers according to claim 2, Features: The two ends of the barrel are respectively connected with the front cover and the rear cover by threads.

4. A method for adjusting a self-adjusting water pump pliers according to claim 2, Features: The sliding caliper body is provided with a long slot, the rear cover is rotatably connected to the long slot of the sliding caliper body through a pin, the fixed caliper body handle is provided with an arc slot, and the front end of the elastic element is rotatably connected to the fixed caliper body through a pin.

5. A method for adjusting a self-adjusting water pump pliers according to claim 2, Features: A slit is arranged at the center of the rear end of the elastic element, one side of the slit is a fixed arm, and the other side is an elastic arm, and the elastic boss is arranged at the rear end of the elastic arm.

6. A method for adjusting a self-adjusting water pump pliers according to claim 2, Features: The elastic boss is a conical boss, and arc chamfers are arranged on both side edges of the elastic boss.

7. A method for adjusting a self-adjusting water pump pliers according to claim 2, Features: The arc bosses on both sides of the notch are provided with transition slopes.

8. A method for adjusting a self-adjusting water pump pliers according to claim 2, Features: The through hole of the front cover is a rectangular hole matched with the front end of the elastic element and is used to prevent the elastic element from rotating.

9. A method for adjusting a self-adjusting water pump pliers according to claim 2, Features: The outer surface of the rotary switch is provided with a long groove mark which is consistent with the notch of the arc boss.

10. A method for adjusting a self-adjusting water pump pliers according to claim 2, Features: The fixed jaw body is provided with a longitudinal groove, and saw teeth are arranged on one side wall of the longitudinal groove. The pawl is arranged on the sliding jaw body through a ratchet pin, and the pawl meshes with the saw teeth on the side wall of the longitudinal groove.

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