Fitting part of hand tool

Abstract

Fitting part of hand tools, which includes: A main body (10) having at one end a fitting part (11) which is a hexagonal recess; wherein the fitting part (11) has several first concave sections (13), several second concave sections (14) and several retaining surfaces (15), wherein the several first concave sections (13), the several second concave sections (14) and the several retaining surfaces (15) are arranged annularly with intervals, wherein the number of first concave sections (13), second concave sections (14) and retaining surfaces (15) is six; wherein each first concave section (13) has two recesses (131), wherein the recesses (131) have the form of a triangular groove or the form of an equilateral triangular groove, wherein the two recesses (131) are arranged linearly without a gap, wherein a first guide angle (132) is formed between the two recesses (131), wherein the first guide angle (132) has the form of a rounded corner, and wherein the recess (131) has a first angle (133) between two side faces, wherein the first angle (133) is equal to or close to 60 degrees or the first angle (133) is equal to or close to 90 degrees, wherein the bottom of the depression (131) forms a second guide angle (134), that is to say, each first concave section (13) has two second guide angles (134), wherein each first guide angle (132) is located between two second guide angles (134), wherein the second guide angle (134) has the form of a rounded corner, wherein the size of the second guide angle (134) is equal to or close to that of the first guide angle (132), wherein each first concave section (13) has a third guide angle (135) at each of its two ends, wherein the third guide angle (135) has the form of a rounded corner, wherein the size of the third guide angle (135) is equal to or close to that of the first guide angle (132),wherein at least one first concave section (13) is provided between two second concave sections (14); , wherein every second concave section (14) has a first arc surface (141), wherein the first arc surface (141) is arc-shaped, wherein the first arc surface (141) has the shape of an arc with a single radius; wherein the holding surface (15) is planar, wherein each holding surface (15) is located between two second concave sections (14), wherein the first concave section (13) is located in the region of the holding surface (15), wherein the number of first concave sections (13) on each holding surface (15) is one, wherein the second concave sections (14) are located at two ends of the holding surface (15), wherein the holding surface (15) is located between the first arc surface (141) and the other first arc surface (141), wherein the holding surface (15) and each first arc surface (141) are not tangential, or a rounded corner is formed between the holding surface (15) and each first arc surface (141) so that the holding surface (15) is smoothly connected to the first arc surface (141); wherein the length of the retaining surface (15) defines a first length (16), wherein the length of the first concave section (13) including the two third guide angles (135) defines a second length (17), wherein the second length (17) is less than or nearly half the first length (16), wherein the maximum height between each recess (131) and the retaining surface (15) defines a first height (171), that is, the first height (171) is between the second guide angle (134) and the retaining surface (15), wherein the angle between the ends of the first arc surface (141) relative to the axis of the main body (10) defines a second angle (18), wherein the second angle (18) is less than or near 30 degrees, or the second angle (18) is less than or near 25 degrees; wherein the six retaining surfaces (15) form a first hexagon (20), wherein there is a central axis (21) in the middle of the first hexagon (20), wherein the first hexagon (20) has six side faces (22), wherein the side faces (22) are aligned with the retaining surfaces (15), wherein the length of the side face (22) defines a third length (23), wherein the first length (16) is between 0.5 and 0.6 times the third length (23), wherein the central axis (21) has a vertical (24), wherein the center of the first guide angle (132) lies on the vertical (24), wherein the distance between two parallel side faces (22) defines a fourth length (25), wherein the first height (171) is between 0.03 and 0.04 times the fourth length (25), or the first height (171) is between 0.03 and lies 0.035 times the fourth length (25); wherein the first hexagon (20) has an incircle (26) wherein the center of the axis of the incircle (26) lies on the central axis (21), wherein the incircle (26) is tangent to each face (22) and the diameter of the incircle (26) is the fourth length (25); and wherein a second hexagon (27) is formed with the central axis (21) as its axis, wherein the second hexagon (27) is smaller than the first hexagon (20), wherein the lateral faces of the second hexagon (27) are parallel to the lateral faces (22), wherein the second hexagon (27) has six vertices (28), wherein the position of each vertex (28) corresponds to the position of the center of the first arc surface (141), wherein the vertices (28) are fairly close to or coincide with the incircle (26).

Description

Technical area

[0001] The invention relates to a fitting part of a hand tool, in particular to a fitting part of a hand tool having second concave portions, whereby the fitting part can be used for fitting with a first screw element, a second screw element and a third screw element, so that it is expandable and practical. State of the art

[0002] Applicant's patent US10596685B2 discloses a fitting part of Handwerk, wherein the fitting part 11 serves to fit with the screw element 30. Each corner 31 of the screw element 30 lies within an arcuate concave portion 14. When the screw element 30 is rotated, wear of each corner 31 can be avoided. However, the fitting part 11 can only be used for a single-size screw element 30, which is generally a metric screw element 30, meaning it is not expandable and practical. Object of the invention

[0003] Problem in the Prior Art: In the conventional adapter of hand tools, the adapter can only be used for screw elements of a single size. In the invention, the adapter has second concave portions, allowing the adapter to be used for mating with a first screw element, a second screw element, and a third screw element. The adapter is suitable for screw elements of three different specifications.

[0004] The technical solution to the problem in the prior art: A fitting part of a hand tool, comprising: a main body having a fitting part, wherein the fitting part has a plurality of first concave sections, a plurality of second concave sections, and a plurality of holding surfaces, wherein each first concave section has two recesses, wherein each second concave section has a first arcuate surface, wherein the holding surface is flat, wherein each holding surface is located between two second concave sections, wherein the first concave section lies in the region of the holding surface, wherein the six holding surfaces form a first hexagon, wherein there is a central axis in the center of the first hexagon, wherein the first hexagon has six side surfaces, wherein the side surfaces are aligned with the holding surfaces, wherein the third screw element has a plurality of protruding ribs, and the plurality of protruding ribs are arranged in a ring shape,wherein the number of projecting ribs is six, and wherein each of the projecting ribs is received in a concave portion.,

[0005] Compared with the prior art, the invention has the following advantages: The fitting part has second concave sections, allowing the fitting part to be used for mating with a first screw element, a second screw element, and a third screw element. The fitting part is suitable for screw elements of three different specifications, making it expandable and practical. Short description of the drawings Fig. 1 a perspective view of the fitting part of the hand tool of the invention, Fig. 2 a front view of the fitting part of the hand tool of the invention, Fig. 3 an enlarged view of zone A in Fig. 2, Fig. 4 a front view when mating with the first screw element of the invention, Fig. 5 is a front view when mating with the second screw element of the invention, Fig. 6 a front view when mating with the third screw element of the invention, Fig. 7 is a perspective view of the second embodiment of the invention, Fig. 8 is a perspective view of the third embodiment of the invention, Fig. 9 is a perspective view of the fourth embodiment of the invention, Fig. 10 is a perspective view of the fifth embodiment of the invention, Fig. 11 is a perspective view of the sixth embodiment of the invention, Fig. 12 is a perspective view of the seventh embodiment of the invention, Fig. 13 is a perspective view of the eighth embodiment of the invention, Fig. 14 an enlarged view of zone B in Fig. 13, Fig. 15 is a perspective view of the ninth embodiment of the invention, Fig. 16 is a perspective view of the tenth embodiment of the invention, Fig. 17 is a perspective view of the eleventh embodiment of the invention, Fig. 18 is a perspective view of the twelfth embodiment of the invention, Fig. 19 is a perspective view of the thirteenth embodiment of the invention. Implementation of the invention

[0006] On Fig. Reference is made to paragraphs 1 to 3. Fig. 1 shows a perspective view of the fitting part of the hand tool of the invention, Fig. 2 shows a front view of the fitting part of the hand tool of the invention, and Fig. 3 shows an enlarged view of zone A in Fig. 2. The invention relates to a fitting part of a hand tool, which comprises: A main body 10 having a cylindrical shape and being a socket, the main body 10 having at one end a fitting part 11 which is a hexagonal recess and at the other end a square drive part 12, the drive part 12 serving for connection to another hand tool; wherein the fitting part 11 has a plurality of first concave portions 13, a plurality of second concave portions 14 and a plurality of holding surfaces 15, wherein the plurality of first concave portions 13, the plurality of second concave portions 14 and the plurality of holding surfaces 15 are arranged in a ring shape with intervals, the number of the first concave portions 13, the second concave portions 14 and the holding surfaces 15 being six; wherein each first concave section 13 has two recesses 131, wherein the recesses 131 have the shape of a triangular groove or the shape of an equilateral triangular groove, wherein the two recesses 131 are arranged linearly without any spacing, wherein a first guide angle 132 is formed between the two recesses 131, wherein the first guide angle 132 has the shape of a rounded corner, wherein the recess 131 has a first angle 133 between two side surfaces, wherein the first angle 133 is equal to or close to 90 degrees, wherein the bottom of the recess 131 forms a second guide angle 134, that is, each first concave section 13 has two second guide angles 134, wherein each first guide angle 132 is located between two second guide angles 134, wherein the second guide angle 134 has the shape of a rounded corner, wherein the size of the second guide angle 134 is equal to or almost equal to that of the first guide angle 132 is,wherein each first concave section 13 has a third guide angle 135 at each of its two ends, wherein the third guide angle 135 has the shape of a rounded corner, wherein the size of the third guide angle 135 is equal to or almost equal to that of the first guide angle 132, wherein at least one first concave section 13 is provided between two second concave sections 14;, wherein each second concave portion 14 has a first arc surface 141, wherein the first arc surface 141 is arc-shaped, wherein the first arc surface 141 has the shape of an arc with a single radius; wherein the holding surface 15 is flat, each holding surface 15 being located between two second concave portions 14, the first concave portion 13 being in the area of ​​the holding surface 15, the number of the first concave portions 13 on each holding surface 15 being one, the second concave portions 14 being located at two ends of the holding surface 15, the holding surface 15 being located between the first arc surface 141 and the other first arc surface 141, the holding surface 15 and each first arc surface 141 being non-tangential, or a rounded corner being formed between the holding surface 15 and each first arc surface 141 so that the holding surface 15 is smoothly connected to the first arc surface 141; wherein the length of the holding surface 15 defines a first length 16, wherein the length of the first concave portion 13 including the two third guide angles 135 defines a second length 17, wherein the second length 17 is less than or nearly half of the first length 16, wherein the maximum height between each recess 131 and the holding surface 15 defines a first height 171, that is, the first height 171 lies between the second guide angle 134 and the holding surface 15, wherein the angle between the ends of the first arcuate surface 141 relative to the axis of the main body 10 defines a second angle 18, wherein the second angle 18 is less than or nearly 30 degrees, or the second angle 18 is less than or nearly 25 degrees; wherein the six holding surfaces 15 form a first hexagon 20, wherein there is a central axis 21 in the middle of the first hexagon 20, wherein the first hexagon 20 has six side surfaces 22, wherein the side surfaces 22 are aligned with the holding surfaces 15, wherein the length of the side surface 22 defines a third length 23, wherein the first length 16 lies between 0.5 and 0.6 times the third length 23, wherein the central axis 21 has a vertical 24, wherein the center point of the first guide angle 132 lies on the vertical 24, wherein the distance between two parallel side surfaces 22 defines a fourth length 25, wherein the first height 171 lies between 0.03 and 0.04 times the fourth length 25, or the first height 171 lies between 0.03 and 0.035 times the fourth length 25; wherein the first hexagon 20 has an incircle 26, wherein the axis center of the incircle 26 lies on the central axis 21, wherein the incircle 26 is tangent to each side surface 22 and the diameter of the incircle 26 is the fourth length 25; and wherein a second hexagon 27 is formed with the central axis 21 as the axis, wherein the second hexagon 27 is smaller than the first hexagon 20, wherein the side surfaces of the second hexagon 27 are parallel to the side surfaces 22, wherein the second hexagon 27 has six corners 28, wherein the position of each corner 28 corresponds to the position of the center of the first arc surface 141, wherein the corners 28 are quite close to the incircle 26 or coincide with it, which is the main structural principle of the star-shaped structure, as in Fig. 3 of US Patent 3,584,667, so that the forming principle of the second concave sections 14 is given the reference numeral 18 in Fig. 3 of US Patent 3,584,667.

[0007] Fig. Figure 4 shows a front view of the first screw element 30 of the invention when mated. From the figure, it can be clearly seen that the fitting part 11 can be used for a first screw element 30, with each first side surface 31 abutting a retaining surface 15, and each first corner 32 located in the region of a second concave portion 14. When the fitting part 11 rotates the first screw element 30, wear on each first corner 32 can be avoided. The first screw element 30 is a metric screw element.

[0008] Fig. Figure 5 shows a front view of the second screw element 40 of the invention when mated. The mating part 11 can be used for a second screw element 40, with every other side surface 41 abutting one side of the retaining surface 15, with every other corner 42 lying in the area of ​​a second concave portion 14. The specifications of the second screw element 40 and the first screw element 30 are different. The second screw element 40 is an imperial screw element.

[0009] Fig. 6 shows a front view when mating with the third screw element of the invention. From the figure, it can be clearly seen that the third screw element 50 is a star-shaped screw element, that is, the third screw element 50 is an E-type screw element. The third screw element 50 has a plurality of projecting ribs 51, and the plurality of projecting ribs 51 are arranged in a ring. The number of projecting ribs 51 is six. Each of the projecting ribs 51 is received in a concave portion 14. The side surfaces of each projecting rib 51 abut the first arc surface 141.

[0010] Fig. Figure 7 shows a perspective view of the second embodiment of the invention. In this embodiment, the main body 10 is a through-hole socket 121.

[0011] Fig. Figure 8 shows a perspective view of the third embodiment of the invention. In this embodiment, the main body 10 is a ring wrench 122.

[0012] Fig. Figure 9 shows a perspective view of the fourth embodiment of the invention. In this embodiment, the main body 10 is a ratchet structure 123.

[0013] Fig. Figure 10 shows a perspective view of the fifth embodiment of the invention. In this embodiment, the main body 10 is a first slide bar.

[0014] Fig. Figure 11 shows a perspective view of the sixth embodiment of the invention. In this embodiment, the main body 10 is a second slide rod 125 of a universal joint.

[0015] Fig. Figure 12 shows a perspective view of the seventh embodiment of the invention. In this embodiment, the main body 10 is a floating joint or a universal joint 126.

[0016] Fig. 13 shows a perspective view of the eighth embodiment of the invention and Fig. 14 shows an enlarged view of zone B in Fig. 13. In this embodiment, the main body 10 is a combination wrench. The fitting part 11 has an open-end wrench structure.

[0017] Fig. Figure 15 shows a perspective view of the ninth embodiment of the invention. The figure clearly shows that the main body 10 is connected to a hexagonal rod. The hexagonal rod faces away from the fitting part 11.

[0018] Fig. Figure 16 shows a perspective view of the tenth embodiment of the invention. In this embodiment, one end of the main body 10 integrally forms a hexagonal rod. The hexagonal rod faces away from the fitting part 11.

[0019] Fig. Figure 17 shows a perspective view of the eleventh embodiment of the invention. It can be clearly seen from the figure that in this embodiment, the main body 10 is a socket. The outer peripheral surface of the main body 10 is provided with a knurling. The outer peripheral surface of the main body 10 is provided with an annular groove near the drive part 12.

[0020] Fig. Figure 18 shows a perspective view of the twelfth embodiment of the invention. It can be clearly seen from the figure that in this embodiment, the main body 10 is a socket. The outer peripheral surface of the main body is provided with knurling. The outer peripheral surface of the main body 10 is provided with an annular groove near the drive part 12.

[0021] Fig. Figure 19 shows a perspective view of the thirteenth embodiment of the invention. In comparison with Fig. 2, the first concave sections 13 are larger. The depressions 131 are larger and also have the same effect.

[0022] The advantages of the fitting part of hand tool of the invention are as follows: 1. As in Fig. As shown in Figures 4 to 6, the fitting part 11 has the second concave portions 14, whereby the fitting part 11 can be used for mating with the first screw element 30, the second screw element 40, and the third screw element 50. The fitting part 11 is suitable for screw elements of three different specifications, so it is expandable and practical. 2. Each first corner 32 lies in the region of a second concave section 14. Each second corner 42 also lies in the region of a second concave section 14. The protruding rib 51 also lies in the region of the second concave section 14. The fitting part 11 can be used to fit together with the first screw element 30, the second screw element 40 and the third screw element 50. 3. The second concave portion 14 has the first arc surface 141 and the second angle 18, whereby the second concave portion 14 can receive the protruding rib 51, so that the main body 10 can rotate the third screw member 50, thereby expanding the operation. 4. As in Fig. As shown in Figure 4, the fitting part 11 can be used to mate with the first screw element 30. Each first corner 32 lies in the area of ​​a second concave portion 14. Wear of the corner 32 can be avoided during rotation. 5. There are holding surfaces 15, so that the structure of the main body 10 is similar to that of the conventional hexagonal fitting part. 6. The center of the second concave portion 14 is located at the same position as the corner 28. The six projecting ribs 51 of the third screw member 50 can each be received in a second concave portion 14 so that the fitting part 11 can be used to fit with the third screw member 50. List of reference symbols 10 main bodies 11 Fitting part 12 Drive part 121 through socket 123 ratchet structure 125 second sliding rod 13 first concave section 131 Deepening 133 first angle 135 third lead angle 14 second concave section 15 Holding surface 16 first length 17 second length 171 first height 18 second angle 20 first hexagon 21 Central axis 22 side surface 23 third length 24 vertical 25 fourth length 26 incircle 27 second hexagon 28 Corner 30 first screw element 31 first side surface 32 first corner 40 second screw element 41 second side surface 42 second corner 50 third screw element 51 protruding rib 122 ring spanners 124 first sliding bar 126 Universal joint 132 first lead angle 134 second guide angle 141 first arch area QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] US 10596685B2

[0002] US 3,584,667

[0006]

Claims

[1] Fitting part of hand tool, which includes: A main body (10) having at one end a fitting part (11) which is a hexagonal recess; wherein the fitting part (11) has a plurality of first concave sections (13), a plurality of second concave sections (14) and a plurality of holding surfaces (15), wherein the plurality of first concave sections (13), the plurality of second concave sections (14) and the plurality of holding surfaces (15) are arranged in a ring shape with intervals, the number of the first concave sections (13), the second concave sections (14) and the holding surfaces (15) being six; wherein each first concave portion (13) has two recesses (131), wherein the recesses (131) have the shape of a triangular groove or the shape of an equilateral triangular groove, wherein the two recesses (131) are arranged linearly without a spacing, wherein a first guide angle (132) is formed between the two recesses (131), wherein the first guide angle (132) has the shape of a rounded corner, wherein the recess (131) has a first angle (133) between two side surfaces, wherein the first angle (133) is equal to or close to 60 degrees or the first angle (133) is equal to or close to 90 degrees, wherein the bottom of the recess (131) forms a second guide angle (134), that is, each first concave section (13) has two second guide angles (134), each first guide angle (132) is located between two second guide angles (134), the second guide angle (134) having the shape of a rounded corner, the size of the second guide angle (134) being equal to or almost equal to that of the first guide angle (132), each first concave section (13) having a third guide angle (135) at each of its two ends, the third guide angle (135) having the shape of a rounded corner, the size of the third guide angle (135) being equal to or almost equal to that of the first guide angle (132),wherein at least one first concave section (13) is provided between two second concave sections (14);, wherein each second concave portion (14) has a first arc surface (141), the first arc surface (141) being arc-shaped, the first arc surface (141) having the shape of an arc with a single radius; wherein the holding surface (15) is flat, each holding surface (15) being located between two second concave portions (14), the first concave portion (13) being located in the region of the holding surface (15), the number of first concave portions (13) on each holding surface (15) being one, the second concave portions (14) being located at two ends of the holding surface (15), the holding surface (15) being located between the first arcuate surface (141) and the other first arcuate surface (141), the holding surface (15) and each first arcuate surface (141) being non-tangential, or a rounded corner being formed between the holding surface (15) and each first arcuate surface (141) so that the holding surface (15) is smoothly connected to the first arcuate surface (141); wherein the length of the holding surface (15) defines a first length (16), wherein the length of the first concave section (13) including the two third guide angles (135) defines a second length (17), wherein the second length (17) is less than or almost half the first length (16), wherein the maximum height between each recess (131) and the holding surface (15) defines a first height (171), that is, the first height (171) lies between the second guide angle (134) and the holding surface (15), wherein the angle between the ends of the first arcuate surface (141) relative to the axis of the main body (10) defines a second angle (18), wherein the second angle (18) is less than or close to 30 degrees, or the second angle (18) is less than or close to 25 degrees; wherein the six holding surfaces (15) form a first hexagon (20), wherein there is a central axis (21) in the middle of the first hexagon (20), wherein the first hexagon (20) has six side surfaces (22), wherein the side surfaces (22) are aligned with the holding surfaces (15), wherein the length of the side surface (22) defines a third length (23), wherein the first length (16) lies between 0.5 and 0.6 times the third length (23), wherein the central axis (21) has a vertical (24), wherein the center point of the first guide angle (132) lies on the vertical (24), wherein the distance between two parallel side surfaces (22) defines a fourth length (25), wherein the first height (171) lies between 0.03 and 0.04 times the fourth length (25), or the first height (171) is between 0.03 and 0.035 times the fourth length (25); wherein the first hexagon (20) has an incircle (26), wherein the axis center of the incircle (26) lies on the central axis (21), wherein the incircle (26) is tangent to each side surface (22) and the diameter of the incircle (26) is the fourth length (25); and wherein a second hexagon (27) is formed with the central axis (21) as the axis, wherein the second hexagon (27) is smaller than the first hexagon (20), wherein the side surfaces of the second hexagon (27) are parallel to the side surfaces (22), wherein the second hexagon (27) has six corners (28), wherein the position of each corner (28) corresponds to the position of the center of the first arc surface (141), wherein the corners (28) are fairly close to the incircle (26) or coincide with it. [2] Fitting part of hand tool according to claim 1, characterized bythat the main body (10) is a socket, wherein the main body (10) has a square drive part (12) at the other end, wherein the drive part (12) serves for connection to another hand tool. [3] Fitting part of hand tool according to claim 1, characterized by that there is a third screw element (50) which is a star-shaped screw element, ie the third screw element (50) is an E-type screw element, wherein the third screw element (50) has a plurality of projecting ribs (51), wherein the plurality of projecting ribs (51) are arranged in a ring shape, wherein the number of projecting ribs (51) is six, wherein each of the projecting ribs (51) is received in a concave portion (14), and wherein the side surfaces of each projecting rib (51) abut against the first arc surface (141). [4] Fitting part of hand tool according to claim 1, characterized bythat the main body (10) is a through socket (121) or a ring spanner (122) or a ratchet structure (123). [5] Fitting part of hand tool according to claim 1, characterized by that the main body (10) is a first sliding rod or a second sliding rod (125) of a universal joint or a floating joint or a universal joint (126) or the main body (10) is connected to a hexagonal rod, wherein the hexagonal rod faces away from the fitting part (11), or one end of the main body (10) integrally forms a hexagonal rod, wherein the hexagonal rod faces away from the fitting part (11). [6] Fitting part of hand tool according to claim 1, characterized by that the main body (10) is a combined wrench, wherein the fitting part (11) has an open-end wrench structure. [7] Fitting part of hand tool according to claim 1, characterized bythat the main body (10) is a socket, wherein the outer peripheral surface of the main body (10) is provided with a knurling.

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