TWI889579B - Wrench structure - Google Patents

Abstract

The present invention relates to a wrench structure, which includes: a body provided with a driving part, a handle part, a first surface, a second surface and a receiving groove; a handle part is received in the receiving groove, and the handle part is assembled in the receiving groove after injection molding; a first groove and a second groove are provided inside the handle part, and after the handle part is assembled in the receiving groove, the first groove and the second groove are hidden in the receiving groove, that is, the first groove and the second groove cannot be seen from the appearance of the wrench structure; the first groove and the second groove are demoldable structures during injection molding, and the first groove and the second groove make the handle part have less material. After the handle part is molded, the first groove and the second groove will make the handle part have a shorter cooling time, and the shrinkage state of the handle part can be greatly reduced.

Description

Wrench structure

The present invention is related to a wrench structure, and in particular to a wrench structure in which the first groove and the second groove are used to provide the handle with a faster cooling effect after injection molding, reduce the shrinkage of the handle after molding, and avoid the shrinkage of the handle after molding, that is, the reduction of volume and the generation of gaps.

According to the previously known US patent number for the wrench structure, US6116122, Taiwan patent number: 088204465, announcement number: 389140, patent name: Improved ratchet wrench handle structure, an improved ratchet wrench handle structure, consisting of a handle and a plastic injection molded handle;

A handle is a solid rod with a recessed receiving groove on each side of its upper surface; a grip is a plastic material wrapping formed by injection molding on the lower side and left and right sides of the handle, and will fill the recessed receiving groove of the handle.

However, the shortcomings of this conventional wrench structure are:

Please refer to Figure 2 of the Taiwan Patent Gazette. The lower side of the handle and the left and right sides of the handle are provided with the recessed receiving groove. The plastic material of the injection molding fills the recessed receiving groove to form the grip. However, the grip will shrink during the injection molding, that is, the volume of the grip will shrink slightly. Therefore, the joint between the handle and the grip will have a gap due to the shrinkage of the grip. After the user has operated for a long time or frequently, the gap between the handle and the grip is easy to cause the grip to fall off from the handle, or foreign objects such as iron filings are easy to accumulate in the gap.

In view of the above shortcomings of the conventional wrench structure, the inventor, with many years of experience in manufacturing, production and design in the industry, finally came up with a product with a wrench structure that can solve the conventional shortcomings.

In the conventional wrench structure, the handle will shrink during injection molding, that is, the volume of the handle will shrink slightly, so the junction between the handle and the handle will have a gap due to the shrinkage of the handle. In the wrench structure of the present invention, the first groove and the second groove are used to provide the handle with a faster cooling effect after injection molding, reduce the shrinkage of the handle, and avoid the shrinkage of the handle after molding, that is, the volume reduction, resulting in a gap.

A wrench structure includes: a body having a driving portion, a grip portion, a first surface, a second surface and a receiving groove; a grip piece is received in the receiving groove, and the grip piece is assembled in the receiving groove after injection molding; a first groove and a second groove are provided inside the grip piece, and after the grip piece is assembled in the receiving groove, the first groove and the second groove are hidden in the receiving groove, that is, the first groove and the second groove cannot be seen from the appearance of the wrench structure; the first groove and the second groove are demoldable structures during injection molding, and the first groove and the second groove make the grip piece have less material. After the grip piece is molded, the first groove and the second groove will make the grip piece have a shorter cooling time, and the shrinkage state of the grip piece can be greatly reduced.

The first groove and the second groove are for the handle to have a faster cooling effect after injection molding. The handle has a larger surface area, which reduces the shrinkage of the handle after molding, and avoids the gap between the body and the handle due to the shrinkage of the handle after molding. The first groove and the second groove are hidden in the accommodating groove, that is, the first groove and the second groove cannot be seen from the appearance of the wrench structure, and the appearance of the wrench structure is the same as the usual one. The first groove and the second groove are demoldable structures during injection molding. The first groove and the second groove can make the handle have less material and weight, and the handle can be injection molded in the mold.

In order to enable the members of the Bureau and those familiar with this technology to fully understand the effects of the present invention, the structure and composition of the present invention are explained below with diagrams and figure numbers. However, the following is only used to explain the implementation examples of the present invention and is not intended to limit the present invention in any form. Therefore, any modifications and changes made within the spirit of the present invention should still fall within the scope of protection of the present invention.

10: Body

11: Drive unit

12: Grip

121: First page

122: Second side

13: Storage tank

14: Handle

20: Grip piece

21: The third side

22: The fourth side

23: First slot

24: Second slot

25: Ribs

26: First length

27: Second length

28: The third length

281: The fourth length

282: The fifth length

Figure 1 is a three-dimensional exploded view of the wrench structure of the present invention.

Figure 2 is a side view of the handle of the wrench structure of the present invention.

Figure 3 is a three-dimensional assembly diagram of the wrench structure of the present invention.

Figure 4 is a side view of the wrench structure of the present invention.

Figure 5 is a three-dimensional diagram of the handle of the second embodiment of the wrench structure of the present invention.

Figure 6 is a side view of the handle of the second embodiment of the wrench structure of the present invention.

Figure 7 is a side view of the second embodiment of the wrench structure of the present invention.

Figure 8 is a three-dimensional diagram of the third embodiment of the wrench structure of the present invention.

Figure 9 is a three-dimensional exploded view of the fourth embodiment of the wrench structure of the present invention.

Figure 10 is a three-dimensional exploded view of the fifth embodiment of the wrench structure of the present invention.

Figure 11 is a three-dimensional exploded view of the sixth embodiment of the wrench structure of the present invention.

Figure 12 is a three-dimensional exploded view of the seventh embodiment of the wrench structure of the present invention.

Figure 13 is a three-dimensional exploded view of the eighth embodiment of the wrench structure of the present invention.

First, please refer to Figures 1 to 4. Figure 1 is a three-dimensional exploded view of the wrench structure of the present invention, Figure 2 is a side view of the grip 20 of the wrench structure of the present invention, Figure 3 is a three-dimensional assembly view of the wrench structure of the present invention, and Figure 4 is a side view. The present invention is related to a wrench structure, which includes: a body 10, the body 10 is an integrally formed structure, and the material of the body 10 is a metal material, a steel material or an aluminum material, The main body 10 is provided with a driving part 11, and the driving part 11 can be assembled with a ratchet structure with forward and reverse rotation or unidirectional rotation. The main body 10 is provided with a handle part 12, and the handle part 12 is an integrally formed structure. The handle part 12 is far away from the driving part 11, and one side of the handle part 12 is provided with a first surface 121, and the other side of the handle part 12 is provided with a second surface 122. The receiving groove 13 is in the shape of a hollow groove, the receiving groove 13 is connected to the first surface 121 and the second surface 122, the length direction of the receiving groove 13 is the same as the length of the handle portion 12, the body 10 is provided with a handle portion 14, the handle portion 14 is provided between the driving portion 11 and the handle portion 12, and the handle portion 14 is connected to the driving portion 11 and the handle portion 12; a handle member 20 , the grip part 20 is accommodated in the receiving groove 13, the grip part 20 is assembled in the receiving groove 13 after injection molding, the grip part 20 is a slightly soft body material, the grip part 20 is a plastic injection molding structure, the grip part 20 is a plastic material, or the grip part 20 is a rubber injection molding structure, the grip part 20 is a rubber material, or the grip part 20 is a variety of materials that can be injection molded;

The handle 20 and the receiving groove 13 are in a tight fit structure, and the handle 20 is pressed into the receiving groove 13, or the handle 20 and the receiving groove 13 can be assembled using adhesive;

The handle 20 has a third surface 21 on one side, the third surface 21 is aligned with the first surface 121, and the third surface 21 can be provided with various patterns or various trademarks, and the third surface 21 and the first surface 121 are smoothly connected to each other and have the same surface shape. The handle 20 has a fourth surface 22 on the other side, the fourth surface is aligned with the second surface 122, and the fourth surface 22 can be provided with various patterns or various trademarks, and the fourth surface 22 and the second surface 122 are smoothly connected to each other and have the same surface shape;

The handle 20 has a first groove 23 disposed inside, the first groove 23 is disposed at one end of the handle 20, the first groove 23 is a non-penetrating groove, or the first groove 23 is a non-penetrating circular groove, the depth direction of the first groove 23 is the same as the extension direction of the handle 20, the handle 20 has a second groove 24 disposed inside, the second groove 24 is disposed at the other end of the handle 20, the second groove 24 is a non-penetrating groove, or the second groove 24 is a non-penetrating circular groove. The second groove 24 has a depth direction that is in the same extension direction as the handle 20. After the handle 20 is assembled in the receiving groove 13, the first groove 23 and the second groove 24 are hidden in the receiving groove 13, that is, the first groove 23 and the second groove 24 cannot be seen from the appearance of the wrench structure. A rib 25 is provided between the first groove 23 and the second groove 24. The spacing of the rib 25 makes the first groove 23 and the second groove 24 non-communicative.

The first groove 23 and the second groove 24 are demoldable structures during molding. The first groove 23 and the second groove 24 make the grip 20 have less material. The first groove 23 and the second groove 24 make the grip 20 have more surface area. The first groove 23 and the second groove 24 make the outer surface and the inner surface of the grip 20 accessible to gas. After the grip 20 is molded, the first groove 23 and the second groove 24 will make the grip 20 have a shorter cooling time. The shrinkage state of the grip 20 can be greatly reduced, that is, the volume change of the grip 20 during molding and after a period of molding is smaller. The first groove 23 and the second groove 24 make the grip 20 slightly thin shell effect;

Please refer to the side view schematic diagram of Figure 2. The first groove 23 has a first length 26, the second groove 24 has a second length 27, the dimension value of the first length 26 is the same as or close to the dimension value of the second length 27, the first groove 23 has a third length 28, the second groove 24 has a fourth length 281, the dimension value of the third length 28 is the same as or close to the dimension value of the fourth length 281, and the rib 25 has a fifth length 282, the dimension value of the fifth length 282 is between one-fifth and one-quarter of the dimension value of the third length 28.

Please refer to FIG. 4, which is a side view of the wrench structure of the present invention. The handle 20 is assembled in the receiving groove 13, that is, the first groove 23 and the second groove 24 are not visible, the first groove 23 and the second groove 24 are hidden in the receiving groove 13, the third surface 21 is smoothly connected to the first surface 121 and has the same surface shape, and the fourth surface 22 is smoothly connected to the second surface 122 and has the same surface shape.

Please continue to refer to Figures 5 to 7. Figure 5 is a three-dimensional view of the grip member 20 of the second embodiment of the wrench structure of the present invention. Figure 6 is a side view of the grip member 20 of the second embodiment of the present invention. Figure 7 is a side view of the second embodiment of the present invention. In this embodiment, the first groove 23 and the second groove 24 are in the shape of a square opening groove. The first groove 23 and the second groove 24 are in a state of communication, that is, there is no rib 25. The fourth surface 22 is a convex arc surface with concave patterns. The grip member 20 is accommodated in the accommodation groove 13. The first surface 121 and the third surface 21 are smoothly connected. The fourth surface 22 protrudes from the second surface 122.

Please continue to refer to Figure 8, which is a three-dimensional diagram of the third embodiment of the wrench structure of the present invention. In this embodiment, the fourth surface 22 is provided with a carved pattern, a concave-convex pattern or a checkered pattern.

Please continue to refer to FIG. 9, which is a three-dimensional exploded view of the fourth embodiment of the wrench structure of the present invention. In the embodiment, the first groove 23 and the second groove 24 are plural, and the plural first grooves 23 and the plural second grooves 24 are arranged at the two long sides of the handle 20 and are arranged in a straight line.

Please continue to refer to FIG. 10, which is a three-dimensional exploded view of the fifth embodiment of the wrench structure of the present invention. In this embodiment, the first groove 23 and the second groove 24 are arranged at the short side of the handle 20, and the plurality of first grooves 23 and the plurality of second grooves 24 are arranged at the two long sides of the handle 20.

Please continue to refer to Figure 11, which is a three-dimensional exploded view of the sixth embodiment of the wrench structure of the present invention. In this embodiment, the receiving groove 13 is a slightly U-shaped groove, and the handle 20 is in a shape that matches the receiving groove 13. The handle 20 is sleeved on the receiving groove 13.

Please refer to FIG. 12 which is a three-dimensional exploded view of the seventh embodiment. The receiving grooves 13 and the handles 20 are plural in number, and each of the handles 20 is assembled in each of the receiving grooves 13.

Please refer to Figure 13, which is a three-dimensional exploded view of the eighth embodiment of the wrench structure of the present invention. Please compare it with Figure 1. The receiving groove 13 is arranged horizontally relative to the driving part 11. The first groove 23 and the second groove 24 are multiple and arranged in a straight line at the side of the handle 20.

The structural advantages of the wrench structure of the present invention are:

1. The first groove 23 and the second groove 24 are used to provide the grip 20 with a faster cooling effect after injection molding. The grip 20 has a larger surface area, which reduces the shrinkage of the grip 20 after molding, and avoids the gap between the body 10 and the grip 20 due to the shrinkage of the grip 20 after molding.

2. The first groove 23 and the second groove 24 are hidden in the receiving groove 13, that is, the first groove 23 and the second groove 24 cannot be seen from the appearance of the wrench structure, and the appearance of the wrench structure is the same as the usual one.

3. The first groove 23 and the second groove 24 are mold-release structures during molding. The first groove 23 and the second groove 24 allow the handle 20 to have less material, so that the handle 20 can be injection molded in the mold.

4. The receiving groove 13 can reduce the weight of the main body 10, and the handle 20 has a lighter weight. After the handle 20 is assembled in the receiving groove 13, the weight of the entire wrench structure can be reduced and convenient to operate.

5. When holding the wrench structure, the palm of a person can contact the handle portion 12 and the handle member 20 at the same time. The handle portion 12 and the handle member 20 are made of two different materials and have a better gripping effect.

6. A rib 25 is provided between the first groove 23 and the second groove 24. The rib 25 prevents the first groove 23 and the second groove 24 from being connected. The rib 25 can make the handle 20 have better structural strength.

7. The handle 20 is assembled in the receiving groove 13 after plastic injection molding. The outer surface of the handle 20 and the inner surface of the receiving groove 13 have a larger area, and the two have a better assembly structure.

Therefore, the wrench structure of this invention has industrial applicability, novelty and advancement, and can truly meet the application requirements for invention patents, so an application is filed in accordance with the law.

10: Body

11: Drive unit

12: Grip

121: First page

122: Second side

13: Storage tank

14: Handle

20: Grip piece

21: The third side

22: The fourth side

23: First slot

Claims (16)

A wrench structure includes: a body, the body is provided with a driving part, the body is provided with a handle part, the handle part is an integrally formed structure, one side of the handle part is provided with a first surface, the other side of the handle part is provided with a second surface, the handle part is provided with a receiving groove, the receiving groove is in the shape of a hollow groove, and the receiving groove is connected to the first surface and the second surface; a handle part, the handle part is received in the receiving groove, the handle part is assembled at the receiving groove after injection molding; the handle part has a first groove inside, the other end of the handle part has a second groove inside, after the handle part is assembled in the receiving groove, the first groove and the second groove are concealed In the receiving groove, that is, from the appearance of the wrench structure, the first groove and the second groove cannot be seen; the first groove and the second groove are demoldable structures during injection molding, the first groove and the second groove make the handle have less material, the first groove and the second groove make the handle have more surface area, the first groove and the second groove make the outer surface and the inner surface of the handle accessible to gas, so that after the handle is molded, the first groove and the second groove will make the handle have a shorter cooling time, and the shrinkage state of the handle can be greatly reduced, that is, the volume change of the handle during molding and after a period of molding is smaller. The wrench structure as described in claim 1, wherein the body is an integrally formed structure, the material of the body is metal, steel or aluminum, the driving part can be assembled with a ratchet structure with forward and reverse rotation or unidirectional rotation, the handle part is separated from the driving part, the length direction of the receiving groove is in the same extension direction as the length of the handle part, the body is provided with a handle part, the handle part is provided between the driving part and the handle part, and the handle part connects the driving part and the handle part. As described in claim 1, the wrench structure, wherein the handle portion is provided with a first surface on one side, the handle portion is provided with a second surface on the other side, and the receiving groove is connected to the first surface and the second surface; the handle member is provided with a third surface on one side, the third surface is aligned with the first surface, and the handle member is provided with a fourth surface on the other side, the fourth surface is aligned with the second surface. The wrench structure as described in claim 1, wherein the handle is made of a slightly soft material, the handle is a plastic injection molding structure, the handle is made of a plastic material, or the handle is a rubber injection molding structure, the handle is made of a rubber material, or the handle is made of various materials that can be injection molded. As described in claim 1, the wrench structure, wherein the handle and the receiving groove are in a tight fit structure, the handle is pressed into the receiving groove, or the handle and the receiving groove can be assembled using adhesive. As described in claim 3, the wrench structure, wherein the third surface can be provided with various patterns or various trademarks, the third surface is smoothly connected to the first surface and has the same surface shape, the fourth surface can be provided with various patterns or various trademarks, the fourth surface is smoothly connected to the second surface and has the same surface shape. The wrench structure as described in claim 1, wherein the first groove is provided inside one end of the handle, the first groove is in the shape of a non-penetrating groove, or the first groove is in the shape of a non-penetrating circular groove, the depth direction of the first groove is in the same extension direction as the handle, the second groove is provided inside the other end of the handle, the second groove is in the shape of a non-penetrating groove, or the second groove is in the shape of a non-penetrating circular groove, the depth direction of the second groove is in the same extension direction as the handle, a rib is provided between the first groove and the second groove, and the rib makes the first groove and the second groove non-communicating. The wrench structure as described in claim 1, wherein the first groove and the second groove are used to make the handle have a slightly thin shell effect. The wrench structure as described in claim 7, wherein the first slot has a first length, the second slot has a second length, the dimension value of the first length is the same as or close to the dimension value of the second length, the first slot has a third length, the second slot has a fourth length, the dimension value of the third length is the same as or close to the dimension value of the fourth length, and the rib has a fifth length, the dimension value of the fifth length is between one fifth and one quarter of the dimension value of the third length. The wrench structure as described in claim 3, wherein the first groove and the second groove are in the shape of a square opening groove, the first groove and the second groove are in a connected shape, the fourth surface is in a convex arc shape with concave patterns, the handle is accommodated in the accommodating groove, the first surface and the third surface are smoothly connected, and the fourth surface protrudes from the second surface. The wrench structure as described in claim 3, wherein the fourth surface is provided with a carved pattern, a concave-convex pattern or a checkered pattern. The wrench structure as described in claim 1, wherein the first groove and the second groove are plural in number, and the plural first grooves and the plural second grooves are arranged at the two long sides of the handle and are arranged in a straight line. The wrench structure as described in claim 1, wherein the first groove and the second groove are arranged at the short side of the handle, the first groove and the second groove are plural, and the plural first grooves and the plural second grooves are arranged at the two long sides of the handle. As described in claim 1, the wrench structure, wherein the receiving groove is a slightly U-shaped groove, the handle is in a shape that matches the receiving groove, and the handle is sleeved on the receiving groove. The wrench structure as described in claim 1, wherein the receiving slots and the handles are plural, and each of the handles is assembled at each of the receiving slots. The wrench structure as described in claim 1, wherein the receiving groove is arranged horizontally relative to the driving portion, and the first groove and the second groove are multiple and arranged in a straight line at the side of the handle.

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