TWI748644B - Link structure of tool - Google Patents

Abstract

A link structure of tool, which includes a tool head having a tool slot and is suitable for a sleeve having a connecting hole, the center of the tool slot is provided with a position rod capable of inserting into or disengaging from the connecting hole and fixing the sleeve to make the fixing effect more stable, an outer plane of the sleeve is used only to transfer power, but not to bear the impedance generated by fixing the sleeve, which makes the kinetic energy transfer more efficient.

Description

Link structure of tools

The present invention relates to the technical field of tool heads used in electric, pneumatic or hand tools, and particularly refers to a connecting structure of tools.

Generally, electric, pneumatic or hand tools are capable of matching various sleeves of different sizes, so there is a working head at the working position of the tool. The working head has a hexagonal groove. Although the sleeves that match the aforementioned grooves have various Size, but each sleeve will be provided with a hexagonal boss that can be assembled in the groove, so that electric, pneumatic or hand tools can work with sleeves of different sizes.

In order to facilitate the sleeve to be easily combined with the working head of electric, pneumatic or hand tools, the size of the hexagonal groove of the working head is usually slightly larger than that of the hexagonal boss of the sleeve, so that the user can smoothly insert the sleeve. The barrel is assembled into the working head. However, in general, the sleeve is usually pushed against the steel ball through a spring so that the steel ball can be locked in the fixing groove in the sleeve, thereby preventing the sleeve from suddenly detaching from the working head during use. There is a relatively loose fit with the working head. When the spring is pushed against the steel ball, the sleeve has only the side corresponding to the spring and the steel ball and abuts against the inner wall of the working head. Therefore, in fact, the sleeve assembly is working The head will slightly deviate from the center point of the working head, and the side of the sleeve abutting the working head is more likely to be worn during the rotation of the working head.

In view of this, it is indeed necessary to provide a technical means to solve the problem that when the sleeve is fixed on the working head, it is easy to deviate from the center and only one side of the sleeve is against the inner wall of the working head, resulting in excessive wear of the abutting side.

The first object of the present invention is to solve the problem that the sleeve will deviate from the center of the working head when it is fixed on the working head.

The second object of the present invention is to solve the problem that one side of the sleeve is too close to the inner wall surface of the working head when the sleeve is fixed in the working head by springs and steel balls.

In order to achieve the foregoing objective, the present invention is a tool connection structure suitable for a sleeve, the sleeve has a joint, the end surface of the joint is recessed with a connection hole, and the tool connection structure includes:

A tool head has a tool groove, the tool groove is convexly provided with a positioning post that can be inserted into or separated from the connecting hole, the positioning post is sleeved with a slip ring, and the diameter of the anti-slip ring is greater than that of the positioning post The diameter is long.

In a preferred embodiment, the joint has a first geometric center point, the connection hole has a second geometric center point, the first geometric center point is located in the connection hole, and the first geometric center point is connected to the The second geometric center point overlaps, the tool slot has a third geometric center point, and the positioning column has an axis. When the positioning column is inserted into the connecting hole, the axis and the first geometric center point, the The second geometric center point and the third geometric center point overlap.

In a preferred embodiment, the third geometric center point of the tool groove is recessed with a set of connecting grooves, the set of connecting grooves is a circular groove and has a fourth geometric center point, the fourth geometric center point and The third geometric center points overlap, and an internal thread is provided on the inner wall of the assembling groove, and an external thread is provided on the outer peripheral surface of the positioning column.

In a preferred embodiment, a ring groove is annularly recessed on the positioning column, and the anti-slip ring is sleeved in the ring groove.

In a preferred embodiment, the joint of the sleeve has an outer ring surface, and the tool groove of the tool head has an inner ring surface. When the sleeve is fixed in the tool groove, the outer ring surface and the There is a gap between the inner ring surfaces.

In a preferred embodiment, the outer toroidal surface is composed of a plurality of outer planes, and the inner toroidal surface is also composed of a plurality of inner planes, each of the outer planes corresponds to a specific one of the inner planes, and each The distance of the gap between the outer plane and the inner plane is equal.

Since this case separates the part of the fixed sleeve from the part of the transmission power, the sleeve is fixed through the positioning column to make the fixing effect more stable, and the outer surface of the sleeve is only used to transmit power, without having to bear the production of the fixed sleeve. The impedance makes the transmission of kinetic energy more efficient.

Please refer to FIGS. 1 to 4, the present invention is a tool connection structure, which mainly includes a tool head 10 and is suitable for a sleeve 20, in which:

The sleeve 20 is a common sleeve 20 commonly used in the field of general electric tools, pneumatic tools or hand tools. The sleeve 20 has a joint 21 for connecting to the electric tool, pneumatic tool or hand tool, and the joint 21 is usually If it is a regular hexagon, the connector 21 of the regular hexagon has a first geometric center point 211 and the end surface is recessed with a contact hole 22, the contact hole 22 has a second geometric center point 221, and the first geometric center point 211 is located at the The first geometric center point 211 overlaps the second geometric center point 221 in the contact hole 22, so that the contact hole 22 is located at the right center of the joint 21.

The tool head 10 has a tool groove 11, the tool groove 11 has a third geometric center point 111, the position of the geometric center point of the tool groove 11 is protruding with a positioning post 12 that can be inserted into or separated from the connecting hole 22, the positioning The column 12 has an axis 121 that overlaps the third geometric center point 111; in this embodiment, the tool groove 11 is recessed from one end surface of the tool head 10 and is a hexagonal groove.

In this embodiment, the third geometric center point 111 of the tool groove 11 is recessed with a set of connecting grooves 13, the set of connecting grooves 13 are circular grooves and have a fourth geometric center point 131, the fourth geometric center point 131 The center point 131 overlaps the third geometric center point 111, and an internal thread 132 is provided on the inner wall of the assembling groove 13, and the outer circumferential surface of the positioning column 12 is provided with an external thread 122 through the external thread of the fixing rod 122 is engaged with the internal thread 132 in the assembling groove 13 to fix the positioning column 12 in the assembling groove 13.

Secondly, a ring groove 123 is recessed on the positioning column 12, and there is a slip ring 30 sleeved in the ring groove 123. When the positioning column 12 is inserted and fixed in the hole 22 of the sleeve 20 When the anti-slip ring 30 is tightly abutted between the sleeve 20 and the positioning post 12, the anti-slip effect is achieved and the sleeve 20 can be prevented from being separated from the positioning post 12, and the diameter of the anti-slip ring 30 is greater than The positioning column 12 has a long diameter.

Furthermore, the joint 21 of the sleeve 20 has an outer ring surface 212, and the tool groove 11 of the tool head 10 has an inner ring surface 112. When the sleeve 20 is fixed in the tool groove 11, the outer ring There is a gap H between the surface 212 and the inner ring surface 112.

More specifically, the outer ring surface 212 is composed of a plurality of outer planes 2121. In this embodiment, it is composed of six outer planes 2121. The inner ring surface 112 is also composed of a plurality of inner planes 1121. In the embodiment, it is composed of six inner planes 1121, each of the outer planes 2121 corresponds to a specific one of the inner planes 1121, and the distance of the gap H between each of the outer planes 2121 and the inner plane 1121 is equal.

The above is the structural configuration and connection relationship of the present invention in a preferred embodiment. The use mode and the effects that the present invention can produce are as follows:

3, the user can choose to assemble the positioning post 12 in the assembling groove 13, and the external thread 122 on the positioning post 12 is engaged with the internal thread 132 in the assembling groove 13 to fix the Position the post 12 and prevent it from detaching. The user then aligns the hole 22 of the sleeve 20 with the positioning post 12, puts the positioning post 12 into the hole 22 and also sets the joint 21 of the sleeve 20 into the tool. In the tool slot 11 of the head 10.

4 to 6, after the sleeve 20 is combined with the tool head 10, the sleeve 20 is mainly fixed by the positioning column 12, and when the tool head 10 is driven to rotate by the electric tool, pneumatic tool or hand tool, the tool head 10 will first be driven to rotate clockwise or counterclockwise. Since the gap H between the outer plane 2121 and the inner plane 1121 is the same distance, the tool head 10 will contact the sleeve at the same time after a slight rotation. The outer plane 2121 of the 20 drives the sleeve 20 to rotate. Since the tool head 10 evenly contacts the outer plane 2121 of the sleeve 20, the kinetic energy transmission is more even and the transmission efficiency is improved.

Since this case separates the part of the fixed sleeve 20 from the transmission power part, the sleeve 20 is fixed through the positioning column 12 to make the fixing effect more stable, and the outer surface 2121 of the sleeve 20 is only used to transmit power, without The impedance generated by the fixed sleeve 20 is assumed, so that the kinetic energy can be transmitted more efficiently.

10: Tool head 11: Tool slot 111: Third geometric center point 112: inner ring surface 1121: inner plane 12: Positioning column 121: Axis 122: external thread 123: ring groove 13: Assembling slot 131: Fourth geometric center point 132: Internal thread 20: sleeve 21: Connector 211: The first geometric center point 212: Outer Ring 2121: Outer plane 22: Socket 221: second geometric center point 30: anti-slip ring

Figure 1 is a perspective view of the present invention in a preferred embodiment; Figure 2 is a side cross-sectional view of the present invention in a preferred embodiment; Figure 3 is an exploded view of the present invention in a preferred embodiment; Figure 4 is a side cross-sectional view of the combined sleeve in a preferred embodiment of the present invention; Figure 5 is a cross-sectional view of the present invention after the sleeve is assembled from another perspective in a preferred embodiment; Figure 6 is a cross-sectional view of the present invention after rotating the sleeve in a preferred embodiment.

10: Tool head

11: Tool slot

112: inner ring surface

1121: inner plane

12: Positioning column

123: ring groove

30: anti-slip ring

Claims (5)

A connecting structure of a tool is suitable for a sleeve. The sleeve has a joint. The end surface of the joint is recessed with a connecting hole. The connecting structure of the tool includes: a tool head with a tool groove, and the tool groove A positioning post can be inserted into or separated from the connecting hole. A slip ring is sleeved on the positioning post. The diameter of the anti-slip ring is greater than the diameter of the positioning post. The tool groove has a third geometric center. Point, the third geometric center point of the tool groove is recessed with a set of connecting grooves, the set of connecting grooves is a circular groove, the positioning column is annularly recessed with a ring groove, and the anti-slip ring is sleeved in the ring groove . The connection structure of the tool according to claim 1, wherein the joint has a first geometric center point, the connection hole has a second geometric center point, the first geometric center point is located in the connection hole, and the first geometric center point A geometric center point overlaps the second geometric center point, the positioning column has an axis, and when the positioning column is inserted into the connecting hole, the axis is the same as the first geometric center point and the second geometric center point And the third geometric center point overlap. The tool connection structure according to claim 1, wherein the assembling groove has a fourth geometric center point, the fourth geometric center point overlaps the third geometric center point, and the inner wall of the assembling groove is provided with a Internal thread, the outer peripheral surface of the positioning column is provided with an external thread. The tool connection structure of claim 1, wherein the joint of the sleeve has an outer ring surface, and the tool groove of the tool head has an inner ring surface, when the sleeve is fixed in the tool groove There is a gap between the outer ring surface and the inner ring surface. The tool connection structure according to claim 4, wherein the outer ring surface is composed of a plurality of outer planes, and the inner ring surface is also composed of a plurality of inner planes, and each of the outer planes corresponds to a specific one of the outer planes. Inner planes, and the distance between each of the outer planes and the inner planes is equal.

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