TWI794135B - Multi-size open wrench - Google Patents

Abstract

A multi-standard open wrench has a handle and at least one joint connected to one end of the handle, the joint is used to fit a nut, and the joint has an opening, and the opening has a straight first A side and a second side, the second side has at least one step protruding toward the first side, the step has a longitudinal section connected to the end of the second side adjacent to the handle and extending toward the first side, and a longitudinal The extended end of the section is connected and away from the first side and inclined towards the handle, so that the second side is connected to the step and has a continuous bending shape, and the second side and the inclined section are inclined at an angle relative to the first side It is 0.1~5 degrees.

Description

Multi-size open wrench

The invention relates to hand tools, in particular to a multi-standard open wrench.

Generally, one end of the open wrench or its two opposite ends is provided with an opening for turning the nut, and the two opposite sides of the opening are parallel to each other, and the opening of a wrench has only one size specification and can only be used. Corresponding to a nut size, it is inconvenient when multiple specifications are required, and when the wrench turns the nut through the opening, there is a margin between the opening and the nut, so that the side of the opening is in contact with the nut. The sharp corners of the nuts are in point contact, and it is easy to cause the sharp corners of the nuts to wear and become rounded and blunt, which will cause the nuts to be unusable.

And as the open wrench provided by the No. 308101 patent case of my country Announcement and the No. CN203109854 and CN2427298 patent cases of China Announcement, a structure to prevent the nut from slipping is provided at its opening, but when the tolerance of the nut is large, the opening will cover The closing nut must be precisely adjusted to the angle position matching the sharp corner of the nut, which often cannot be put in place at one time, resulting in the problem of inconvenient operation, and there is only one specification for the opening. When multiple specifications are required, it is still necessary to replace the board with different specifications. hand.

Another example is the open wrench provided by the patent cases of CN111203822, CN214081148, and CN2917958 in the Chinese Announcement, which have openings of different specifications and are suitable for turning nuts of different specifications, and the user can adjust the required size specification by himself. However, the distance between the two opposite sides of the open end must be adjusted to be suitable for inserting the nut and close to the width of the nut, especially when the user cannot see the nut during operation, so that the open end is not easy to fit on the nut at one time .

In addition, the two opposite sides of the opening end are arranged parallel to each other like the traditional wrench, and when the nut is turned, it is easy to cause the problem of sharp corners of the nut being worn.

In view of this, how to solve the above-mentioned problems is the primary subject to be solved by the present invention.

The main purpose of the present invention is to provide a multi-standard open wrench, which has an opening-shaped joint, and the two opposite sides in the opening are respectively a first side and a second side, and the second side is continuous It is bent to form a stage for fitting multiple specifications of nuts, and has the effect of responding to multiple specifications to achieve rapid response; and guides the nuts to the fitting position through the first side to achieve the effect of rapid positioning , and has the effect of convenient operation.

In order to achieve the aforementioned purpose, the present invention provides a multi-standard open wrench, including: a shank extending along a length and defining an imaginary centerline parallel to the length; At least one joint portion is used to fit the nut, the joint portion is connected to one end of the handle and has an opening, the opening has a first side that is straight and parallel to the imaginary centerline and a first side that is parallel to the imaginary centerline The first side faces the second side, the second side protrudes toward the first side with at least one step, the step has an end adjacent to the handle of the second side and extends toward the first side a longitudinal section, and an inclined section connected to the extended end of the longitudinal section and extending away from the first side and obliquely extending toward the handle so that the second side meets the step to form a continuous bend, and The angles at which the second side surface and the inclined section are inclined relative to the first side surface are 0.1-5 degrees respectively.

Preferably, there are two joints, which are respectively connected to two ends of the handle.

Preferably, the number of stages on the two junctions is two respectively, and the stages on the same junction are connected to each other for fitting nuts of different specifications.

Preferably, the length of the inclined section of the step is less than or equal to half of the length of the side of the nut corresponding to the specification.

The above objects and advantages of the present invention can be easily understood from the detailed description of the following selected embodiments and the accompanying drawings.

First of all, please refer to Figures 1 to 6, which are the multi-standard open wrench provided by the present invention, which is composed of a handle 1 and at least one joint 2, wherein:

The handle 1 extends along a length direction and defines an imaginary centerline L parallel to the length direction.

The joint part 2 is used to fit and rotate the nut 3. The joint part 2 is connected to one end of the handle 1 and has an opening 21. The opening 21 has a straight shape parallel to the imaginary center line. The first side 22 of L and a second side 23 facing the first side 22, the second side 23 protrudes toward the first side 22 with at least one step 24, and the step 24 has a 23 a longitudinal section 241 adjacent to one end of the handle 1 and extending toward the first side 22, and a longitudinal section 241 connected to the end of the longitudinal section 241 and extending away from the first side 22 and obliquely extending towards the handle 1 The inclined section 242, so that the second side 23 and the step 24 are connected to form a continuous bending shape, and the angle θ of the second side 23 and the inclined section 24 inclined relative to the first side 22 is 0.1 to 5 degrees (as in Figure 2). And as shown in FIG. 3, the length D2 of the inclined section 242 of the step 24 is less than or equal to half of the side length D1 of the nut 3 of the corresponding specification.

In this embodiment, the number of the joint 2 is two, and they are respectively connected to the two ends of the handle 1, and the number of steps 24 on the two joints 2 is two respectively, and the same joint 2 The two stages 24 are connected to each other, and the protruding degree of each stage 24 is not the same, so as to fit nuts of different specifications, and one joint 2 can fit nuts of three sizes correspondingly, according to the present invention The working requirements of six specifications and sizes can be realized in one open wrench.

Please refer to Figures 4 and 5 for the actual use of the multi-standard open wrench provided by the present invention. The open wrench is fitted with its opening 21 on the outer periphery of the nut 3 so that the nut 3 extends in. Between the step 24 of the corresponding specification and the first side 22 or with its opening 21 nested on the outer periphery of the nut 3 so that the nut 3 extends into between the second side 23 and the first side 22 of the corresponding specification, as in the fourth As shown in the figure, the nut 3 is the smallest size and is correspondingly fitted between the innermost step 24 of the opening 21 and the first side 22, and the inclined section 242 of the innermost step 24 is opposite to the first side. One side 22 is inclined at an angle θ of 0.1 to 5 degrees (as shown in Figure 2) and forms a gap 4 with the side of the nut 3 parallel to the first side 22; and as shown in Figure 5, through the inclined section 242 The angle θ of inclination relative to the first side 22 is 0.1 to 5 degrees (as shown in Figure 2). When the open wrench is rotated by an external force to drive the nut 3 to rotate, the inclined section 242 will be aligned with the nut 3. The sides are arranged parallel to each other and can be closely fitted together for rotation, whereby the open wrench can be attached to the side of the nut 3 with its inclined section 242 to achieve surface contact, so as to increase the stability during rotation and avoid We are familiar with the problem of slippage caused by the point contact between the wrench and the nut, so as to achieve the function of preventing slippage and avoiding the wear of the nut.

Furthermore, as shown in Figure 5, when the user applies force to rotate the wrench so that the inclined section 242 of the wrench fits on the side of the nut 3 of the corresponding specification, the first side 22 and A contact point A is defined at the position where the nuts 3 are in contact; a contact point B is defined by attaching the inclined section 242 to the side of the nut 3 and away from the end point of the handle 1; attaching the inclined section 242 to the nut 3 A contact point C is defined on the side and adjacent to one end point of the handle 1, and the length S2 of the connection line between the contact point A and the contact point C is greater than the length S1 of the connection line between the contact point A and the contact point B. As shown, the inclined section 242 is away from the first side 22 and extends obliquely toward the handle 1 without being parallel to the first side 22, so that the side of the nut 3 that fits with the inclined section 242 forms a wedge structure. An inclined surface 31 abuts against the inclined section 242 , so that when the nut 3 is turned by a wrench, the nut 3 can be stably engaged between the inclined section 242 and the first side 22 to prevent the nut 3 from slipping off.

In addition, as shown in FIG. 7, when the nut 3 is fitted into the corresponding position in the opening 21, the first side 22 is designed to be straight, even if the user cannot see the position of the nut 3, It is also possible to put the wrench against the side of the nut 3 with its first side 22, so that the first side 22 of the wrench moves along the side of the nut 3, thereby guiding the wrench to turn the nut 3 The cap 3 smoothly enters between the corresponding step 24 and the first side 22 , so as to obtain an effect of operation indication, and further achieve the effect of quickly positioning the nut 3 to achieve convenient operation.

In particular, please refer to Figures 4 and 5 for matching. When the inclined section 242 of the open wrench fits on the side of the nut 3 of the corresponding specification, the original distance between the inclined section 242 and the side of the nut 3 The gap 4 (as Fig. 4) between will disappear, and form a gap 5 (as Fig. 5 ) of the same size as the gap 4 between the first side 22 and the side of the nut 3; therefore, if the gap 5 If the size is too large, the first side 22 will swing from the side of the nut against which it originally abuts to the side of the adjacent nut, causing the nut to slip off. And by the length D2 of the inclined section 242 of this step 24 less than or equal to half of the side length D1 of the nut 3 of its corresponding specification, the gap 4 between the inclined section 242 and the side of the nut 3 will not be too large, by This reduces the required swing of the open wrench to fit the side of the nut 3 with its inclined section 242 , so as to avoid the problem of slippage and wear of the nut 3 caused by the excessive spacing 5 .

In summary, by the structure of the present invention above, the following advantages can be produced: 1. In the present invention, the number of steps 24 on the same joint part 2 is two, and the protruding degree of each step 24 is not the same, so as to fit nuts 3 of different specifications, and one joint part 2 can correspond to Fitting the nuts of three specifications and sizes, the working requirements of six specifications and sizes can be realized in one open wrench. 2. In the present invention, the inclined angle θ of the inclined section 242 relative to the first side 22 is 0.1 to 5 degrees. When the open wrench rotates to drive the nut 3 to rotate, the inclined section 242 will be aligned with the side of the nut 3. The sides are arranged in parallel and fit together to rotate, and then achieve surface contact to increase the stability during rotation, thereby achieving the function of preventing slipping and preventing the nut 3 from being worn. 3. The present invention utilizes the straight structural design of the first side 22. During the process of fitting the nut 3 to the corresponding position in the opening 21, even if the user cannot see the position of the nut 3, the opening plate can also be closed. The hand leans against the side of the nut 3 with its first side 22 , and the first side 22 moves along the side of the nut 3 to guide the wrench to smoothly enter the nut 3 into the corresponding step 24 Between and the first side 22, an operation indication effect is obtained, and then the fast positioning of the nut 3 is achieved to improve the convenience of operation. 4. In the present invention, the length D2 of the inclined section 242 of the step 24 is less than or equal to half of the length D1 of the side of the nut 3 of the corresponding specification, so that the gap 4 between the inclined section 242 and the side of the nut 3 will not Too large, thereby reducing the required swing of the open wrench to fit the side of the nut 3 with its inclined section 242, so as to avoid the nut 3 slipping and wearing due to the excessive spacing 5.

The disclosure of the above embodiments is only used to illustrate the present invention, not to limit the present invention, so any changes in numerical values or replacement of equivalent elements should still fall within the scope of the present invention.

To sum up, when it can make those who are familiar with this technology understand that the present invention can clearly achieve the above-mentioned purpose, it actually complies with the provisions of the Patent Law, so the application is filed according to the law.

1: handle 2: Joint 21: opening 22: First side 23: Second side 24: class 241: Longitudinal section 242: Inclined segment 3: Nut 31: Bevel 4: Clearance 5: Spacing L: imaginary center line θ: angle D1: The length of the side of the nut D2: Inclined section length A: Contact point B: contact point C: contact point S1: length of connection between contact point A and contact point B S2: Length of connection between contact point A and contact point C

Fig. 1 is a schematic plan view of the present invention. Fig. 2 is a partially enlarged schematic diagram of the present invention, which is used to show the angle at which the second side and the inclined section are inclined relative to the first side. Fig. 3 is a partially enlarged schematic diagram of the present invention, which is used to show that the length of the inclined section is less than or equal to half of the side length of the nut of its corresponding specification. Figures 4 and 5 are schematic diagrams of the action of the present invention when the nut is rotated. Figure 6 is a schematic diagram of the state where the inclined section of the present invention abuts against the inclined surface formed as a wedge structure on the side of the nut. Fig. 7 is a schematic diagram of the action of the present invention when fitting the nut.

1: handle

2: Joint

21: opening

22: First side

23: Second side

24: class

241: Longitudinal section

242: Inclined segment

L: imaginary center line

Claims (4)

A multi-standard open wrench, comprising: a shank extending along a length and defining an imaginary centerline parallel to the length; At least one joint portion is used to fit the nut, the joint portion is connected to one end of the handle and has an opening, the opening has a first side that is straight and parallel to the imaginary centerline and a first side that is parallel to the imaginary centerline The first side faces the second side, the second side protrudes toward the first side with at least one step, the step has an end adjacent to the handle of the second side and extends toward the first side a longitudinal section, and an inclined section connected to the extended end of the longitudinal section and extending away from the first side and obliquely extending toward the handle so that the second side meets the step to form a continuous bend, and The angles at which the second side surface and the inclined section are inclined relative to the first side surface are 0.1-5 degrees respectively. The multi-specification open wrench as described in Claim 1, wherein the number of the joints is two, and they are respectively connected to the two ends of the handle. The multi-specification open wrench as described in claim 2, wherein the number of stages on the two joints is two respectively, and the stages on the same joint are connected to each other for fitting nuts of different specifications. The multi-specification open wrench as described in Claim 1, wherein the length of the inclined section of the class is less than or equal to half of the side length of the nut of its corresponding specification.

Images