TWM620877U - Head member for torque tool - Google Patents

Abstract

A head member of a torque tool. An identification color layer is set on the outer surface of a head member. The identification color layer conforms to the matching relationship between the size specification and the torque reference value. It does not need to memorize or calculate, and the torque tool drive head member can be obtained. The torque, effectively solves the drawbacks of the previous technology on color recognition and scale measurement.

Description

Head member of torque tool

This creation relates to the field of hand tools, and in particular refers to a head member suitable for a torque tool. The color matching method is adopted, and the better torque of the torque tool driving head member can be obtained without recitation or calculation.

The known wrench rotates the screw joint to perform locking or loosening operations. If the torque is too large, the wrench may damage the structure of the screw connection. If the torque is too small, the screw connection is easy to loosen and fall off. After many tests, one piece of data is obtained to understand the corresponding relationship between the size of the screw connection and the torque.

The aforementioned data is marked by the following methods: at least one identifying text or symbol is imprinted on the surface of the wrench, or a large-area identification mark is imprinted on the surface of the wrench to provide a permanent mark for the purpose of identification.

Under normal circumstances, the aforementioned marking method still has some problems. For example, if the grease covers part or all of the markings, a user needs to stop working and wipe off the grease. Read the markings to determine whether the wrench is suitable. Or, some wrenches have no marks on the back and must be turned to the front, or even from the horizontal position to the upright position, in order to clearly identify the marks of the wrench.

In order to reduce or eliminate the problems of the aforementioned methods, US Patent No. 4,982,627 provides a tool identification method, which uses electronic materials to identify the color wheel of a resistor or capacitor and transfers it to the surface of the tool. For example, at least one groove is formed on the surface of the tool, and the groove has a predetermined width, which is used to distinguish between inch and metric sizes; set in the groove to form a color ring Coloring material, the coloring material is trapped under the surface of the tool and indicates the size number; the chart of ten Arabic numerals is defined in various colors, and any specification is displayed by using any number of grooves and colors, forming an infinite size combination .

However, the numbers composed of these color circles need to be memorized and recited. If it is not used frequently, it is easy to confuse the numbers and colors, which will increase the search time of the tools in vain, and relatively delay the efficiency of assembly or maintenance.

Chinese Utility Model Patent No. 2118617 provides an adjustable wrench, which is attached to a handle with a fixed jaw and is equipped with a movable jaw. The distance between the movable jaw and the fixed jaw is changed to clamp the screw connection. One set of scales of the movable jaw is side by side with another set of scales of the handle. The two sets of scales are used to calculate the exchange of metric units and imperial units according to a conversion table of the handle, which is very troublesome.

Although the conversion table includes the corresponding relationship between the size specifications and the torque value, it requires mental arithmetic or computer calculations, which wastes a lot of time in calculations. Moreover, the parallax affects the judgment of the scale, and the reading of the deviation value has a great influence on the measurement result.

Therefore, how to improve the shortcomings of color recognition and scale measurement has become an urgent issue for this creation.

In view of this, the author of this case provides a head member, the main purpose is to use the matching method of the same color system to identify the better torque of the torque tool driving the head member, without reciting or calculating, you can directly or indirectly obtain the better screw connection. The torque, effectively solves the drawbacks of the previous technology on color recognition and scale measurement.

To achieve the above purpose, this creation is based on the size specification or torque reference value in the following table, one of the identification color layers is set on the appearance of a head member:

In the table, the dimension specification of the distance between the opposite sides of a screw joint is expressed in mm, and the torque reference value adopts the international unit system of Nm.

In this way, this creation uses the color layers of the same color to identify the better torque of the torque tool driving head component. It does not need to memorize or calculate, and it can obtain the better torque of the screw connection, which effectively solves the previous technology's color recognition and scale measurement. The drawbacks.

In order to make the purpose, structure, features, and advantages of this creation easy to understand, one or more preferred embodiments are given as follows in detail with the accompanying drawings.

10.61: Head member

11: body

12: Fixed jaw

13: Drive surface

14: distance

15: bumps

16: Convex

17: bead groove

18: Elastic part

19, 72: Beads

20: The first identification color layer

21: The second identification color layer

22: The third identification color layer

23, 65: The fourth identification color layer

231: Groove

232: Pigment

233: Concave

234: plug body

24: The first number symbol

25: The second number sign

26: The third number sign

27: The fourth number symbol

30: Wrench

31, 70: main components

32: Connector

33: Tube

34: Torque indicating unit

35: transparent cover

36, 75: tip

37: Torque unit

38, 78: transparent cover

39: Grip

40: Installation Department

41: Hole

42: Button

43: indicator ring

44: scale

50: The first color zone

51: The second color zone

52: The third color zone

53, 76: the fourth color area

54: The first torque reference value

55: Second torque reference value

56: The third torque reference value

57: The fourth torque reference value

60: Torque screwdriver

62: Screwdriver head

63: sleeve

64: hole

71: main body

73: Combining column

74: Arrow

77: number sign

79: Rotary knob

Figure 1 depicts the first embodiment of the head member.

Figure 2 shows a second embodiment of the head member.

Figure 3 shows a third embodiment of the head member.

Figure 4 presents a fourth embodiment of the head member.

Figure 5 depicts a fifth embodiment of the head member.

Figure 6 shows the structure of the color recognition layer of the fifth embodiment of the head member.

Figure 7 shows the other structure of the identification color layer of the fifth embodiment of the head member.

Figure 8 depicts the fourth embodiment of the head member connected with the main body member to form a torque tool.

Fig. 9 presents the connection relationship of Fig. 8 from a cross-sectional angle.

Figure 10 shows the partial structure of the main body member from a plan view.

Figure 11 depicts the sixth embodiment of the head member connected with the main body member to form another torque tool.

Figure 12 depicts the seventh embodiment of the head member.

Fig. 13 is a cross-sectional view of a part of Fig. 12;

As shown in Figure 1, the first embodiment of the head member 10 is provided with a body 11 with two fixed jaws 12 standing upright, and two driving surfaces 13 of the fixed jaws 12 facing each other are separated by a distance 14 . In the figure, a raised block 15 protrudes from the top surface of the main body 11, and the raised block 15 extends a convex portion 16 outward. The extension direction of the convex portion 16 is different from the protruding direction of the fixed jaw 12, and a bead groove 17 is formed on the bottom surface of the convex portion 16 to configure an elastic member 18 and a bead 19 (see FIG. 9). Under the condition that the bead 19 does not easily leave the bead groove 17, the elastic member 18 pushes the bead 19 to partially protrude from the surface of the convex portion 17.

Two first recognizing color layers 20 and a first number symbol 24 are arranged on the main body 11 through one of roller printing, spraying equipment, and printing equipment. One of the first color recognition layer 20 extends from the top surface of the bump 15 to the surface of the convex portion 16, and the other first color recognition layer 20 is attached to the side surface of the main body 11. The first numeral symbol 24 is a set of Arabic numerals 17 engraved on the top surface of the bump 15.

In this way, the body 11 has an open-end wrench profile, so that the two fixed jaws 12 of the head member 10 can fit into a screw connection (not shown in the figure). Most of the screw joints are hexagonal bodies, such as nuts or screw heads. Therefore, the two fixed jaws 12 fit the opposite sides of the nut or the head of the screw, so the distance 14 of the head member 10 is approximately equal to the opposite side distance of 17 mm, which becomes the basis for the size and specification of the screw connection. Simply put, the first number symbol 24 clearly indicates a set of Arabic numerals 17, representing screw connection The distance between the opposite sides of the piece is 17mm, and the first identification color layer 20 is used as the representative color of the size specification, and no deliberate memory or recitation is required. Because the distance 14 is fixed, the two fixed jaws 12 can effectively drive the 17 mm screw member to rotate. Even if there is no first number symbol, it will not affect the first recognizing color layer 20 to act as the representative color of the 17 mm screw connection.

Figure 2 depicts a second embodiment of the head member 10. Its structure is roughly the same as that of the first embodiment. The difference is that the top surface of the bump 15 forms a second numeral symbol 25, which is a set of Arabic numerals 22. The screw joints with a distance of 22 mm from opposite sides are approximately equal to the distance 14 of the head member 10, and the driving surfaces 13 of these fixed jaws 12 are on both sides of the screw joints.

Secondly, the head member 10 is provided with a second identification color layer 21 which is arranged around the bump 15 and extends from the top surface of the bump 15 to the surface of the protrusion 16. There is no need to recite, and the second identification color layer 21 becomes the representative color of the 22mm screw connection.

Figure 3 shows a third embodiment of the head member 10, and its structure is roughly the same as that of the first embodiment. The difference is that the top surface of the bump 15 forms a third number symbol 26, which represents the head The distance 14 of the component 10 is equivalent to a 26mm screw connection, so the two fixed jaws 12 can fit the opposite sides of the nut or the head of the screw.

Secondly, the head member 10 is provided with a third identification color layer 22, which represents the color of the 26mm screw connection. Except for the bumps 15 and the protrusions 16, the third color identification layer 22 is arranged on the side surface of the main body 11.

Figure 4 is a top view showing a fourth embodiment of the head member 10. The structure of the head member 10 is roughly the same as that of the first embodiment. The difference is: a fourth numeral 27 is formed on the top surface of the bump 15, which represents the distance 14 of the head member 10 is equivalent to a 29mm screw connection. , So that the two fixed jaws 12 can fit the opposite sides of the screw connection.

Furthermore, the head member 10 is provided with a fourth color recognition layer 23, which is arranged on the top surface of the bump 15 and extends to the surface of the convex portion 16, which represents the color of the 29mm screw connection.

Fig. 5 is a perspective view showing a fifth embodiment of the head member 10. The structure of the fifth embodiment is substantially the same as the structure of the fourth embodiment. The difference is that the surface of the main body 11 displays a fourth identification color layer 23. In the figure, the fourth identification color layer 23 is on the side of the fixed jaw 12.

Figure 6 is a cross-sectional view, where the fixed jaw 12 is cut to see the internal structure. The fourth color recognition layer 23 includes a groove 231 that sinks into the side surface of the fixed jaw 12 and receives some color material 232, and the color material 232 determines the color of the fourth color recognition layer 23.

Or, as shown in FIG. 7, a plug body 234 is used to fill a recess 233, which can also form the fourth identification color layer 23 of the fifth embodiment of the head member 10. In the figure, the recess 233 is on the side of the fixed jaw 12, and the plug body 234 exposes the color portion of the fixed jaw 12 to serve as the fourth color recognition layer 23.

The head member 10 of the five embodiments is a set, including the size specifications of the screw connections 17, 22, 26, and 29 mm.

In FIG. 8, the fourth embodiment of the head member 10 is connected to a main body member 31 to form a torque tool, such as a wrench 30.

Wherein, one end of a tube 33 of the main body member 31 is pivotally connected to a joint 32, and the other end is connected to a grip 39. A housing 34 is fixed to the tube 33 and has a tip 36 pointing toward the grip 39. A transparent cover 38 is adjacent to the grip 39, and the transparent cover 38 fits the tip 36 and is fixed to the housing 34. A transparent cover 35 is combined with the housing 34. Between the transparent cover 35 and the tip 36 is a torque unit 37, and the torque unit 37 adopts the international unit system Nm.

FIG. 9 is a cross-sectional view showing the coupling relationship between the fourth embodiment of the head member 10 and the main body member 31. In the figure, the joint 32 has a mounting portion 40 for receiving the convex portion 16 of the head member 10. The bead body 19 clamps a hole 41 of the joint 32, and the hole 41 is configured with a button 34 that is pushed out of the joint 31 by the bead body 19, so that the head member 10 and the main body member 31 are not easily separated.

As shown in Figures 8 and 10, the transparent cover 35 can see four color areas: the first color area 50, a set of Arabic numerals in the center, represents the first torque reference value 54 of the 18Nm torque value; the second A second torque reference value 55 of the color zone 51 represents a torque value of 42Nm; a third torque reference value 56 of the third color zone 52 represents a torque value of 55Nm; and a fourth torque reference value of the fourth color zone 53 57 represents a torque value of 65Nm.

In addition, the transparent cover 38 shields an indicator ring 43, one of the scales 44 on the surface of the indicator ring 43 is aligned with the tip 36, and the torque value of the wrench 30 is read.

It is not difficult to know from Figures 8-10 that the identification color layer of the head member 10 is the same as the color zone of the main body member 31, so that the torque of the wrench 30 conforms to the torque reference value of this color zone.

The wrench 30 has the function of an open-end wrench, and any screw connection is covered by the head member 10. Assuming that the head member 10 cannot effectively rotate the screw joint, the coupling relationship between the head member 10 and the joint 32 should be released. When released, the button 42 is forced to retreat into the hole 41, thereby pressing the bead body 19 to retract into the bead groove 17 of the convex portion 16 and simultaneously squeeze the elastic member 18 to allow the convex portion 16 to withdraw from the mounting portion 40. After the main body member 31 is replaced with another head member 10, the bead body 19 and the hole 41 return to the latching relationship.

Once the screw is driven by the head member 10, the head member 10 is qualified. The fourth identification color layer 23 of the head member 10 and the fourth color zone 53 belong to the same color system. From the fourth torque reference value 57 in the center of the fourth color zone 53, it is known that 65Nm belongs to the maximum torque value that the screw connection can withstand. Observe the scale 44 aligned with the tip 36 of the torque indicating unit 34 through the transparent cover 38 to determine whether the torque of the wrench 30 falls within 65 Nm. If the torque is too loose, turn the handle 39 to adjust to a proper torque range. If the torque value is in the proper range (for example, 65±5Nm), use the wrench 30 to operate the screw connection to perform the locking or loosening operation.

When in use, the torque of the wrench 30 is transmitted to the screw connection, and a reaction force of the screw connection counteracts the torque of the wrench 30. Once the torque value range is exceeded, the torque output will be interrupted to prevent the structure of the screw connection from being damaged by the wrench 30.

In this embodiment, by virtue of the matching method of the same color system, the adjustment operation is easily and simply completed. It is neither necessary to know from the fourth numeral 27 that the screw connection has a size of 29mm, nor is it necessary to recite or calculate the correlation between the metric (or imperial) unit and the torque.

According to the corresponding relationship of the same color system, size specification and torque reference value, make the following table.

In the table, mm indicates the size specification of the distance between the opposite sides of the screw connection, and the torque reference value adopts the international unit system of Nm.

Even if the head member 10 does not have a number symbol, anyone can match the reference value of the torque indicating unit 34 according to the same color relationship between the color layer and the color zone. There is no need to recite or calculate, so that the wrench 30 can obtain the correct torque, simplifying Adjust the job.

FIG. 11 is an exploded perspective view showing the sixth embodiment of the head member 61, which also has a fourth identification color layer 65 on its outer surface.

Secondly, the difference between the sixth embodiment and other embodiments is that the head member 61 is composed of a screwdriver head 62 and a sleeve 63. The end surface of the sleeve 63 is plunged into a square hole 64. The fourth color recognition layer 65 coats the surface of the sleeve 63 in the circumferential direction.

In the figure, the main body member 70 is provided with a main body 71, a coupling post 73 of the main body 71, and the coupling post 73 has a bead 72 having elasticity. A rotary knob 79 is rotatably arranged at the other end of the main body 71 and drives the indicating ring to rotate in the same direction, so the rotary knob 79 can change the torsion force of the main body 71. A transparent cover 78 fixed between the rotary knob 79 and the main body 71 shields the indicator ring, and the color area on the surface of the indicator ring can be seen through the transparent cover 78. An arrow portion 74 is on the surface of the main body 71, and its tip 75 faces the fourth color zone 76 of the indicator ring. A number symbol 77 in the center of the fourth color area 76 indicates that the torque critical point of the main body 71 is equivalent to 65 Nm. A fifth color zone is next to the fourth color zone 76, which represents the critical point of torque of the main body 71 equivalent to 80 Nm.

When the coupling post 73 is inserted into the hole 64, the bead body 72 presses against the sleeve 63, so that the head member 61 does not easily leave the main body member 70, and together forms another torque tool, such as a torque driver 60. The screwdriver head 62 is inserted into a screw connection, such as a groove of a flat head screw.

When the fourth identification color layer 65 of the same color is paired with the fourth color zone 76, the main body 71 is equivalent to the critical point torque of 65Nm, which is transmitted to the coupling column 73 to drive the head member 61 to rotate, which is suitable for screw connection (that is, flat head screws). Locking or unscrewing operations.

As shown in Figures 12 and 13, the seventh embodiment of the drawing head member 61 is roughly the same in structure as the sixth embodiment. The difference is that the area of the fourth identification color layer 65 on the sleeve 63 is larger than that of the sixth embodiment. The area of the embodiment is small.

In some embodiments, the fourth color recognition layer is provided on the outer surface of the screwdriver head, which is also within the allowable range of the present invention.

10: Head member

11: body

12: Fixed jaw

13: Drive surface

14: distance

15: bumps

16: Convex

20: The first identification color layer

24: The first number symbol

Claims (10)

A head member of a torque tool, including: a head member (10) extends a convex portion (16) on a body (11); according to the size specifications or torque reference values in the following table, one of the identification color layers is set on the head The appearance of the component (10):

In the table, the dimension specification of the distance between the opposite sides of a screw joint is expressed in mm, and the torque reference value adopts the international unit system of Nm. The head member of the torque tool according to claim 1, wherein the body (11) stands with two fixed jaws (12), and the two driving surfaces (13) of the fixed jaws (12) facing each other are separated by a distance (14) The distance (14) is approximately equal to the size specification of the screw connection. As for the head member of the torque tool according to claim 1, one of the identification color layers is provided on the outer surface of the body (11). The head member of the torque tool according to claim 1, wherein the body (11) protrudes from a raised block (15), and the raised block (15) extends the convex portion (16). The head member of the torque tool according to claim 4, wherein any identifying color layer is arranged on the periphery of the bump (15), the top surface of the bump (15), or the top surface of the bump (15) to the convex portion (16). )surface. The head member of the torque tool according to claim 1, wherein the convex portion (16) forms a bead groove (17) and is configured with an elastic member (18) and a ball (19). A head member of a torque tool, comprising: a head member (61) composed of a screwdriver head (62) and a sleeve (63); according to the size specification or torque reference value in the following table, one of the identification color layers is set on The appearance of the head member (61):

In the table, the dimension specification of the distance between the opposite sides of a screw joint is expressed in mm, and the torque reference value adopts the international unit system of Nm. The head member of the torque tool according to claim 7, wherein the identification color layer is provided on the outer surface of the screwdriver head (62) or the sleeve (63). The head member of the torque tool according to claim 1 or 7, wherein the color identification layer is a groove (231) provided with a color material (232). The head member of the torque tool according to claim 1 or 7, wherein the identification color layer is a plug (234) filled with a recess (233).

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