CN115319674A - Movable wrench head component - Google Patents

Abstract

The invention provides an adjustable wrench head member, which comprises a body, wherein a fixed jaw is erected at the front end of the body, and an adjustable jaw is arranged at the front end of the body and can move, so that the distance between the adjustable jaw and the fixed jaw is changed. The body is combined with a main body component, so that the head component and the main body component form an adjustable wrench. According to different size specifications of a set of screw connectors, a set of identification areas with different colors are arranged on the surface of the body, and each identification area corresponds to the size specification of a single screw connector. When the movable jaw is matched with the fixed jaw to clamp the screw connector, an indicating part on the side surface of the movable jaw can point to the identification area without calculation of measurement, and the screw connector with corresponding dimension and specification can be identified through color.

Description

Adjustable wrench head component

Technical Field

The invention relates to the field of tool identification, in particular to a head component which utilizes different colors to identify a screw connector or a workpiece with one dimension specification.

Background

Known tools such as open end wrenches, monkey wrenches, box wrenches, hex wrenches and their accessories (e.g., socket) are marked by the following methods: the tool surface is marked with at least one identification character or symbol, or is stamped with a large-area identification mark on the tool surface, so as to provide a permanent mark for identification.

The foregoing methods still present certain problems after the tool has been in use for many years. For example, in normal use, the grease covers part or all of the indicia, causing a user to stop working, wipe the grease and read the indicia, and determine the dimensional specifications of the workpiece for which the tool is intended. Alternatively, some open-ended wrenches do not have indicia on the back, and the wrench must be turned to the front, or even rotated from a transverse position to an upright position, to clearly identify the indicia.

In order to reduce or eliminate the problems of the foregoing method, U.S. patent No. 4,982,627 provides a tool identification method, comprising: at least one groove is formed on the surface of the tool, and the groove has a preset width and is used for distinguishing English and metric sizes; a coloring material disposed in the recess to form a color ring, the coloring material being recessed below the surface of the tool and indicating a dimensional number; the ten arabic numeral chart is defined in various colors, and any specification is displayed by using any number of grooves and colors, resulting in an infinite combination of sizes.

However, the number represented by each color requires long-term memory. If the tool is not frequently used, the numbers represented by the colors cannot be recorded, the tool is easy to be confused with the corresponding screw connector or workpiece, the searching time is unnecessarily increased, and the assembly or maintenance efficiency is relatively delayed.

Secondly, each tool has at least one operative end adapted to accommodate a single size specification of threaded member or workpiece. The locking and loosening operation can be performed by operating the screw connector or the workpiece by carrying a group of tools with different sizes. Such a plurality of tools is bulky and not easily handled. Moreover, tools of the wrong size are easily selected.

Additionally, the flag does not inform of the torque value. The user can determine the torque of the tool by personal experience and execute locking or loosening operation. Excessive distortion can damage the structure of the screw connector or the workpiece and cause the screw connector or the workpiece to be out of service, or the locking degree is insufficient, and the screw connector or the workpiece is easy to shake and loosen.

Chinese patent No. CN2118617U provides an adjustable wrench, which is configured with a fixed jaw and a movable jaw on a handle. The movable jaw and the handle are respectively provided with a group of scales at the side-by-side positions, and the movable jaw is matched with the fixed jaw to clamp the screw connector or the workpiece because ten scales have an Arabic number, and the data of the two groups of scales are calculated according to the decimal system of the measuring scale and the Arabic number, so that the size specification of the screw connector or the workpiece can be known. Moreover, it is very troublesome to convert metric system and english system units based on the conversion table of the middle part of the handle.

Although the conversion table includes the corresponding relationship between the dimensional specification and the torque value, it requires calculation by mental calculation or calculation by an electronic computer, which not only takes calculation time, but also has fine scale intervals, and is liable to obtain a deviation value due to parallax, thereby affecting the measurement result.

Therefore, how to improve the drawbacks of color identification and scale measurement is an urgent issue to be solved by the present invention.

Disclosure of Invention

In view of this, the present invention provides a head member, which can be assembled into a monkey wrench and disassembled for replacement. The main purposes of the invention are as follows: the defects of color identification and scale measurement in the background technology are effectively overcome by identifying the screw connector with corresponding dimension specifications through colors without calculation of measurement.

In view of the above, the present invention provides a movable wrench head member, comprising:

a fixed jaw is erected at the front end of a body;

a movable jaw is arranged at the front end of the body, and the movable jaw reciprocates relative to the body to change the distance from the movable jaw to the fixed jaw;

according to different size specifications of a set of screw connectors, a set of identification areas with different colors are arranged on the surface of the body, and each identification area corresponds to the size specification of a single screw connector; and

an indicating part is arranged on the side surface of the movable jaw, the indicating part points to any identification area, and the screw connector with corresponding dimension and specification is identified through the color of the identification area.

The wrench head member, wherein the set of identification regions includes but is not limited to: a first identification area, a second identification area, a third identification area and a fourth identification area.

The wrench head member, wherein the identification area, the size specification of the threaded member and a torque value are in a corresponding relationship as shown in the following table:

the set of identification areas	Size specification of screw joint	Value of torque
			A first identification region	17	18
Second identification area	22	42
			Third identification area	26	55
The fourth identification region	29	65

In the table, the size specification of the screw connector refers to the opposite side distance in mm, and the unit of the torque value adopts international unit Nm.

The wrench head member wherein each identification area has a wide end and a narrow end, the wide end having a diameter or width greater than the width of the narrow end, the narrow end abutting the front end of the body.

The movable wrench head member, wherein the identification region has a recess for carrying a colorant.

The monkey wrench head member, wherein the recess comprises: a narrow groove and a wide groove are provided, one end of the narrow groove is connected with the front end of the body, and the other end of the narrow groove is connected with the wide groove.

The movable wrench head component is characterized in that the narrow groove is straight, and the wide groove is limited to avoid other identification areas.

The movable wrench head component is characterized in that the narrow groove is bent, and the wide groove is limited to avoid other identification areas.

The indication part is provided with an angle groove carrying pigment.

The movable wrench head component, wherein the angle groove is regular triangle or isosceles triangle.

Therefore, the invention has no scale measurement, does not need the processes of mental calculation or electronic computer conversion and the like, and effectively solves the defects of long-term memory, unfavorable selection and transportation, insufficient torque value notification and the like of the traditional color identification.

The invention can be embodied in many different forms and executed without departing from the spirit and scope of the appended claims.

Drawings

Fig. 1 is a schematic view showing a specific structure of a first embodiment of a head member of the present invention.

Fig. 2 is a schematic view showing a head member partially enlarged.

Fig. 3-6 are schematic diagrams showing the continuous motion of the movable jaw looking down on the first surface of the head member.

Fig. 7 is a schematic view of an open end wrench according to the first embodiment having a head member.

Fig. 8 is a schematic view showing a torque indicating unit of an open spanner partially enlarged.

Fig. 9 is a schematic view showing that the open spanner performs the locking or unscrewing operation.

Fig. 10 is a schematic view looking down on the second surface depicting a second embodiment of the head member of the present invention.

Description of reference numerals: head members 10, 10'; a body 11; the fixed jaw 12, 63; the engagement surfaces 13, 41, 64; a front end 14; an open slot 15; a straight hole 151; an opening 152; a shaft hole 16; an operation hole 17; a base 18; an insertion portion 19; steel balls 20; a bead groove 21; an elastic member 22; a first surface 23; a second surface 231; a first identification area 24; a second identification area 25; a third identification area 26; a fourth identification area 27; a recess 30; a narrow groove 31; the wide groove 32; colorants 33, 48; a shaft 34; a cylindrical body 35; a spiral disk 36; a movable jaw 40; the flat portion 42; a straight rod 43; a valley 44; the teeth 45; side faces 46, 461; an indicating section 47; corner slots 49; open end wrenches 50, 60; a body member 51; a rod 52; a joint 53; a button 54; a grip 55; a transparent cover 56; a scale ring 561; scale 562; a torque indicating unit 57; a shell 571; a tip 572; torque unit 573; a transparent cover 574; a first color bar 575; second color patch 576; a third color block 577; a fourth color block 578; a torque value 579; a coupling sleeve 58; a handle 61; a head 62; an air conditioning device 70; a tube 71; a pipe joint 72; a flat surface 73; a color 74; a screw 75; a nut 76; a connecting tube 77; distances D1 to D4.

Detailed Description

As shown in FIG. 1, a first embodiment of the head member 10 includes, but is not limited to: a body 11, a set of identification areas, an operating member, a movable jaw 40 and an indicating part 47.

Wherein the body 11 is solid and has one end forming a base 18. An insert part 19 extends outwards from the center of the larger area of the base 18, and a ball groove 21 of the insert part 19 is provided with a steel ball 20 and an elastic element 22. The elastic member 22 normally pushes the steel ball 20 partially to be exposed from the side of the insertion portion 19. The steel ball 20 is not easily separated from the insertion portion 19, and is forced to retreat into the ball groove 21 while compressing the elastic member 22 to be deformed.

The other end of the body 11 is considered as the front end 14. A fixed jaw 12 is fixed standing on the front end 14, and one engaging surface 13 of the fixed jaw 12 abuts the front end 14. An open slot 15 is formed in the front end 14 of the body 11, which includes: a straight hole 151 penetrates through two sides of the body 11 along the parallel direction of the front end 14; an opening 152 engages the straight bore 151 with the front end 14 of the body 11.

In the figures, the movable jaw 40 is a solid corner block joined to a straight bar 43 by a flat 42. The straight rod 43 is sunk into a row of tooth valleys 44 on the outer side, so that the straight rod 43 is provided with a plurality of teeth 45 on one side. When the straight rod 43 enters the straight hole 151, the flat portion 42 passes through the opening 152, and supports the movable jaw 40 to reciprocate along the front end 14 relative to the fixed jaw 12. The diameter (or width) of the straight bar 43 is greater than the distance of the opening 152, preventing the movable jaw 40 from coming off the body 11 through the opening 152. The side of the movable jaw 40 facing the fixed jaw 12 is referred to as the engagement surface 41.

In addition, one operation hole 17 is formed from the top (i.e., the first surface 23 of fig. 2) to the bottom (i.e., the second surface 231 of fig. 9) of the body 11. The handling hole 17 communicates with the straight hole 151, and the straight rod 43 partially exposes the handling hole 17 to see the valleys 44 and the teeth 45. Along the parallel direction of the axis of the straight hole 151, an axis hole 16 is formed inside the body 11 and passes through the opposite side of the operation hole 17. The operating member is placed in the operating hole 17 and a shaft 34 passes through a cylindrical body 35 of the operating member via the shaft hole 16. A helical disk 36 of the operating member surrounds the outer circumferential surface of the cylindrical body 35, the helical disk 36 extending partially beyond the surface of the body 11 so as to engage (or bite) the teeth 45 of the straight rod 43 to provide the motive force required for displacement of the movable jaw 40.

In this embodiment, the set of identification areas includes, but is not limited to: a first identification area 24, a second identification area 25, a third identification area 26 and a fourth identification area 27. The identification areas are different in color and are disposed on the first surface 23 of the body 11 according to different sizes of the screw fasteners. Therefore, the color of each identification area corresponds to the dimension specification of a single screw connector.

The indicator 47 is provided on the side 46 of the movable jaw 40. Without further elaboration, the movable jaw 40 cooperates with the fixed jaw 12 to clamp fasteners (not shown) with the indicator 47 pointing to one of the identified areas to identify the corresponding size specification of the fastener by color.

The following table shows the screw size specification by the opposite side distance (mm), the torque value by the international unit system (Nm), and the corresponding relation between the group of identification areas, the screw size specification and the torque value.

The set of identification regions	Size specification of screw connector	Value of torque
			First identification area (24)	17	18
Second identification area (25)	22	42
			Third identification area (26)	26	55
Fourth identification area (27)	29	65

In use, the spiral disc 36 and the cylinder 35 rotate in the same direction, and the engaging relationship of the teeth 45 drives the straight rod 43 to drive the flat portion 42 to move together, so as to change the distance between the movable jaw 40 and the fixed jaw 12, and the distance from the distance D4 in fig. 3 to the distance D3 in fig. 4 and the distance D2 in fig. 5 is reduced to the distance D1 in fig. 6.

As shown in fig. 3, the indication portion 47 points to the fourth identification area 27, and the distance D4 represents the dimension of the movable jaw 40 in cooperation with the fixed jaw 12 for clamping the screw member is 29mm by referring to the above table through the color of the coloring material 33 of the fourth identification area 27. In FIG. 4, the color of the pigment 33 in the third identification area 26 indicates that the distance D3 is equivalent to a screw member with a dimension of 26 mm. In FIG. 5, the color 33 of the second identification area 25 indicates that the distance D2 corresponds to a screw member having a dimension of 22 mm. Of course, in FIG. 6, the color of the pigment 33 in the first identification area 24 is used to show that the distance D1 is equivalent to the screw member with the dimension of 17 mm.

In particular, the presence or absence of a remembered size is a trivial factor in the present invention. By recognizing the color of the pigment 33, the corresponding relationship between the group of identification areas and the size specification of the screw connector can be known without influencing the subsequent use.

It will be readily appreciated from a review of figure 2 that the fourth identification area 27 has a wide end and a narrow end, the wide end being circular and having a diameter greater than the width of the narrow end. In some embodiments, it is within the purview of the present invention that the wide end be a polygon having a width that is greater than the width of the narrow end.

The fourth identification area 27 is formed by a recess 30 carrying a colorant 33, the recess 30 being recessed into the first surface 23 of the body 11. Specifically, the recess 30 includes: a narrow groove 31 and a wide groove 32, the narrow groove 31 having one end connected to the front end 14 of the body 11 and the other end connected to the wide groove 32. The narrow groove 31 is bent to serve as a narrow end of the fourth identification region 27, and the wide limiting groove 32 avoids other identification regions. Thus, the wide slot 32 corresponds to the wide end of the fourth identification area 27.

The other identification areas are substantially the same as the fourth identification area 27, with the following differences: the narrow grooves 31 of the first and second identification areas 24, 25 are curved and the narrow grooves 31 of the third identification area 26 are straight.

In addition, the indicator 47 is an angular groove 49 carrying the colorant 48, the angular groove 49 being a regular triangle or an isosceles triangle, one corner of the triangle facing the first surface 23 of the body 11 being capable of aligning with the narrow end of each identification area.

As shown in fig. 7, the head member 10 is combined with a body member 51 to form an open-ended wrench 50. Since the head member 10 has the movable jaw, the open wrench 50 is also called a movable open wrench.

In the figure, the body member 51 has a rod 52, one end of the rod 52 is pivotally connected to a joint 53, and the other end is coupled to a coupling sleeve 58. The coupling sleeve 58 is fixed on the rod 52 for mounting a handle 55, the end of the handle 55 close to the coupling sleeve 58 is a transparent cover 56, the transparent cover 56 shields a scale ring 561, and the scale ring 561 is provided with a set of scales 562 for displaying torsion.

When the tab 53 receives the insert 19, the base 18 prevents the insert 19 from extending too far into the tab 53. The steel ball 20 of the insertion portion 19 abuts a button 54 of the joint 53, so that the button 54 is protruded outside the joint 53. The button 54 forces the steel ball 20 back into the insert 19, allowing the insert 19 to disengage the spigot 53. Similarly, the hollow joint 53 is capable of receiving the other head member 10 to complete the assembly of a torque tool.

In fig. 8, the coupling sleeve 58 is provided with a torque indicating unit 57. A shell 571 of the torque indicating unit 57 bulges outside the coupling sleeve 58, the shell 571 incorporating a transparent cover 574, the transparent cover 574 shielding a first color patch 575, a second color patch 576, a third color patch 577 and a fourth color patch 578, each color patch displaying a torque value 579. A tip 572 of the shell 571 points towards a scale 562 of the scale ring 561, indicating the degree of torsion. From the tip 572 to the transparent cover 574 is a torque unit 573, which is imprinted on the surface of the shell 571 in newton-meters (Nm) international unit system for torque unit 573.

As can be seen from fig. 2, 7 and 8, the color of the first color cell 575 is the same as or similar to the color of the first identification area 24, and it is appropriate to rotate the 17mm screw at a torque value 579 of 18 Nm. The torque indicating unit 57 expresses the correct torque value of the open-end wrench 50 by color, without having to recite nor calculating with a mental or electronic computer.

Similarly, the head member 10 preferably rotates a threaded member 22mm in size with a torque value 579 of 42Nm for a second color piece 576 and a second identification area 25 of the same or similar color. The same or similar color third color block 577 and third identification area 26 rotate a 26mm size threaded fastener at a torque of 55 Nm. Alternatively, a fourth colored block 578 having the same (or similar) color may be used with the fourth identification area 27 to rotate a threaded member having a 29mm size gauge with a torque of 65 Nm.

In fig. 9, one air conditioner 70 performs an assembling or repairing operation. A handle 61 of an open end wrench 60 has a head 62, the head 62 stands on two fixed jaws 63, the opposite side of the fixed jaws 63 is regarded as an engaging surface 64, and the distance between the two engaging surfaces 64 is constant. The open end wrench 60 is thus fixed, with two fixing jaws 63 enclosing a nut 76, which nut 76 is at the end of an adapter tube 77 adjacent to a pipe connection 72. The pipe joint 72 is provided to a pipe 71 of the air conditioner 70, and the pipe 71 is coupled to the coupling pipe 77 by locking the pipe joint 72 and the nut 76 by means of a screw 75.

Assume that the open end wrench 50 turns the coupler 72. The adapter 72 has six flat surfaces 73, at least one of the flat surfaces 73 being colored 74. According to the same color matching relationship, the movable jaw 40 moves to the same (or similar) identification area with the color 74, and the distance between the engagement surface 41 and the fixed jaw 12 is changed. Meanwhile, the open end wrench 50 changes the color block torque to the same color as the identification area, so as to be suitable for rotating the pipe joint 72 without damaging the structure of the pipe joint 72. In other words, the open end wrench 50 of the present embodiment is easier to find the proper torque than the fixed open end wrench 60.

In summary, the head member of the present embodiment has the following advantages:

first, the head member is assembled to the body member and the head member is disassembled to allow the body member to engage other head members.

Secondly, when the movable jaw is matched with the fixed jaw to clamp the screw connector, the indication part of the movable jaw can point to the identification area without calculation of the measurement, the screw connector with corresponding dimension can be identified by color, and the operation is simple and convenient.

Third, there is no need to recite, memorize, mental calculation or calculate by an electronic computer, and the preferred torque value is that by rotating the screw connector by the color recognition head component.

Fig. 10 depicts a second embodiment of the head member 10' from a top view of the second surface 231. The head member 10' is substantially identical in structure to the first embodiment, with the difference that: first, another set of identification regions is added to the second surface 231 of the body 11.

Furthermore, the side surface 461 of the movable jaw 40 also has an indication portion 47, the tip of the indication portion 47 points to the narrow end of any identification region, the color of the wide end and/or the identification region corresponds to the distance from the movable jaw 40 to the fixed jaw 12, the size specification of the screw is suitable, and the head member 10' applies the appropriate torque value to the screw.

Claims (10)

1. An adjustable wrench head member, comprising:

a fixed jaw is erected at the front end of a body;

a movable jaw is arranged at the front end of the body, and the movable jaw reciprocates relative to the body to change the distance from the movable jaw to the fixed jaw;

according to different size specifications of a set of screw connectors, a set of identification areas with different colors are arranged on the surface of the body, and each identification area corresponds to the size specification of a single screw connector; and

an indicating part is arranged on the side surface of the movable jaw, the indicating part points to any identification area, and the screw connector with corresponding dimension and specification is identified through the color of the identification area.

2. The adjustable wrench head member of claim 1, wherein the set of identification regions includes, but is not limited to: a first identification area, a second identification area, a third identification area and a fourth identification area.

3. The adjustable wrench head according to claim 2, wherein the set of identification areas, the fastener specifications, and a torque value are associated as shown in a table of:

the set of identification areas Size specification of screw joint Value of torque A first identification region 17 18 Second identification area 22 42 The third identification region 26 55 The fourth identification region 29 65

In the table, the dimension specification of the screw connector refers to the distance of opposite sides, the unit is mm, and the unit of the torque value adopts international unit Nm.

4. The adjustable wrench head member of claim 1, wherein each identification area has a wide end and a narrow end, the wide end having a diameter or width greater than the width of the narrow end, the narrow end abutting the front end of the body.

5. The adjustable wrench head member of claim 4, wherein the identification portion has a recess carrying a pigment.

6. A movable wrench head member as claimed in claim 5, in which the recess comprises: a narrow groove and a wide groove are provided, one end of the narrow groove is connected with the front end of the body, and the other end of the narrow groove is connected with the wide groove.

7. A spanner head structure as claimed in claim 6 wherein the narrow grooves are straight to limit the width of the grooves from other areas of identification.

8. A spanner head structure as claimed in claim 6 wherein the narrow channels are angled to limit the width of the slot from other areas of identification.

9. The adjustable wrench head member as claimed in claim 1, wherein the indicator portion is provided with an angular groove carrying a pigment.

10. A spanner head member as claimed in claim 9 wherein the angular slot is regular or isosceles triangular.

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