Tool holder

A tool holder includes a base, a rotating sleeve, a segmented positioning member and an anti-dropping member. The main feature is that the base includes the chassis and the convex shaft formed with the abutment plate. The rotating sleeve includes a seat and a quadrangular sleeve joint with a hollow chamber formed therein. The seat is formed with a perforation for the convex shaft of the base and the abutment plate to pass through and enter the hollow chamber. The segmented positioning member includes a blocking part formed on the convex shaft, and first and second inserting parts formed at the corresponding positions of the seat. The anti-dropping member is located in the hollow chamber, and includes the anti-dropping flange formed on the convex shaft; thereby forming both the segmented positioning member and the anti-dropping member set within the projection range of the lateral contour of the quadrangular sleeve joint.

CROSS-REFERENCE TO RELATED U.S. APPLICATIONS

Not applicable.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates generally to a tool holder, and more particularly to an innovative structure type of a tool holder.

The present invention discusses a tool holder, especially a tool holder form for placing sleeving tools (e.g. sleeves).

This tool holder comprises a base and a rotatable binder. The common structure type can refer to the disclosure of Taiwan patent certificate No. M591462 “sleeve seat” utility patent case declared on Mar. 1, 2020. The binder disclosed in the known technology has a quadrangular driving part for setting the sleeve. A storage slot in outside diameter larger than the quadrangular driving part is formed in one end of the quadrangular driving part, so as to set the cylinder formed on the base. The storage slot and cylindrical structure are provided with an anti-dropping component and a segmented positioning element, wherein the anti-dropping component prevents the base and binder from being disengaged from each other, the segmented positioning element provides inserting positioning segmented hand feeling at two steering angles when the binder is rotating.

However, there are still some problems in the practical application of said sleeve seat structure type. For example, as the anti-dropping member and the segmented positioning member are arranged in the peripheral region of the quadrangular driving part, in this structural framework, it is difficult to further reduce the outside diameter of the known sleeve seat, so that it is difficult to respond to the design development trend of tool product miniaturization, that is really an important technical topic of the circle.

BRIEF SUMMARY OF THE INVENTION

The primary objective of the present invention is to provide a tool holder. The technical problem to be solved is how to develop a novel tool holder structure type with more ideal practicability. The tool holder is used for placing the existing sleeving tool. The sleeving tool forms a quadrangular mouthpiece.

Based on said objective, the technical characteristic of problem solving of the present invention is that the tool holder includes a base, a rotating sleeve, a segmented positioning member and an anti-dropping member.

Said base includes a chassis and a convex shaft. Said convex shaft is formed with at least one abutment plate extended laterally. Said rotating sleeve includes a seat and a quadrangular sleeve joint. Said quadrangular sleeve joint is provided for setting the quadrangular mouthpiece of the sleeving tool. A hollow chamber is formed in the quadrangular sleeve joint, and said hollow chamber is formed with at least one elastic piece. A blocking part is formed on the outside of the elastic piece. When said elastic piece is propped by the at least one abutment plate in hard mode, said blocking part localizes the quadrangular mouthpiece to prevent the sleeving tool from dropping out. Said seat is formed with a perforation, and the contour of the perforation must allow the convex shaft of the base and the at least one abutment plate to pass through and enter said hollow chamber.

Said segmented positioning member includes at least one blocking part and a first inserting part and a second inserting part or the at least one blocking part to optionally engage with, where at least one blocking part is formed on said convex shaft of the base. Said first inserting part and said second inserting part are formed in the corresponding positions of the seat.

Said anti-dropping member is located in the hollow chamber, including an anti-dropping flange laterally expanded and formed at the predetermined height of the convex shaft of said base. Said anti-dropping flange is elastic, and the outside diameter thereof must be larger than the corresponding aperture of the perforation. When said convex shaft passes through the perforation, said anti-dropping flange forcibly penetrates into said hollow chamber through the perforation in the state of interference fit, so as to prevent said convex shaft from backward dropping out of said hollow chamber.

Thereby, both said segmented positioning member and said anti-dropping member are arranged in the projection range of the lateral contour of the quadrangular sleeve joint.

The main effect and advantage of the present invention are the innovative configuration that both the segmented positioning member and anti-dropping member are arranged in the projection range of the lateral contour of the quadrangular sleeve joint, so that the outside diameter of the tool holder product can be further reduced, better responding to the design development trend of tool product miniaturization, there are practical progressiveness and better benefit of industrial use.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1toFIG. 8show the preferred embodiments of the tool holder of the present invention, but the embodiments are for illustration only, the patent application is not limited to this structure.

The tool holder100is provided for placing a sleeving tool200. The sleeving tool200is formed with a quadrangular mouthpiece201. The tool holder100includes a base10, a rotating sleeve20, a segmented positioning member30and an anti-dropping member40. The base10includes a chassis11and a convex shaft12, the convex shaft12is formed with at least one abutment plate13extended laterally (note: there are two arranged symmetrically in this case). The rotating sleeve20includes a seat21and a quadrangular sleeve joint22. The quadrangular sleeve joint22fits the quadrangular mouthpiece201of the sleeving tool200. A hollow chamber221is formed in the quadrangular sleeve joint22. The hollow chamber221is formed with at least one elastic piece222, a blocking part223is formed on the outside of the elastic piece222. When the elastic piece222is propped by the at least one abutment plate13in hard mode, the blocking part223localizes the quadrangular mouthpiece201the prevent the sleeving tool200from dropping out. The seat21is formed with a perforation23, the contour of the perforation23must allow the convex shaft12of the base10and the at least one abutment plate13to pass through and enter the hollow chamber221. The segmented positioning member30includes at least one blocking part33and a first inserting part31and a second inserting part32for the at least one blocking part33to optionally engage with. The at least one blocking part33is formed on the convex shaft12of the base10. The first inserting part31and the second inserting part32are formed in the corresponding positions of the seat21. The anti-dropping member40is located in the hollow chamber221, including an anti-dropping flange41laterally expanded and formed at the predetermined height of the convex shaft12of the base10. The anti-dropping flange41is elastic and the outside diameter thereof must be larger than the corresponding aperture of the perforation23. When the convex shaft12passes through the perforation23, the anti-dropping flange41forcibly penetrates into the hollow chamber221through the perforation23in the state of interference fit, so as to prevent the convex shaft12from backward dropping out of the hollow chamber221. Thereby, both the segmented positioning member30and the anti-dropping member40are arranged in the projection range of the lateral contour of the quadrangular sleeve joint22.

Based on the aforesaid structure type and technical characteristic, the tool holder100disclosed in the present invention is in the preset positioning state in practice, as shown inFIG. 3toFIG. 6. In this state, the rotation angle of rotating sleeve20exactly allows the blocking part33to engage with the first inserting part31, so that the elastic piece222is propped by the abutment plate13in hard mode, so the blocking part223can localize the quadrangular mouthpiece201(as shown inFIG. 1) to prevent the sleeving tool200from dropping out. Afterwards, as shown inFIG. 7toFIG. 8, in the preset release condition, the rotation angle of rotating sleeve20exactly allows the blocking part33to engage with the second inserting part32, so that the elastic piece222is not propped by the abutment plate13, and the blocking part223cannot localize the quadrangular mouthpiece201(as shown inFIG. 1), the sleeving tool200can drop out. The main claimed effect of the present invention is the innovative configuration that both the segmented positioning member30and the anti-dropping member40are arranged in the projection range of the lateral contour of quadrangular sleeve joint22, so that the outside diameter of the tool holder product can be further reduced, better complying with the design development trend of tool product miniaturization.

As shown inFIG. 9toFIG. 15, in this case, an outer disc24outside the projection range of the lateral contour of the quadrangular sleeve joint22is extended from the periphery of the seat21of the rotating sleeve20, and a boss25is formed on the bottom of the outer disc24(note: it is a slot in this case, or it can be a lug). The chassis11of the base10is formed with a circular guide part115(note: it is a lug in this case, or it can be a slot), the circular guide part115is provided for setting the boss25, so as to provide smoother rotating guiding and leaning effect.

As shown inFIG. 2andFIG. 4, in this case, the height of the anti-dropping flange41is level with the bottom height of the two abutment plates14.

As shown inFIG. 2andFIG. 4, in this case, the anti-dropping member40includes a bevel guide face42which is integrally extended from the anti-dropping flange41and connected to the convex shaft12. In terms of the effect of the bevel guide face42in this case, the anti-dropping flange41can pass through the perforation23more smoothly under the guidance of bevel face.

As shown inFIG. 16, in this case, the anti-dropping member40includes a bevel guide lug43formed in the perforation23, the bevel guide lug43has a reducing end431and an expanding end432. The bevel guide lug43in this case coordinates with the anti-dropping flange41, the outside diameter of the expanding end432is larger than the outside diameter of the anti-dropping flange41. The outside diameter of the reducing end431is smaller than the outside diameter of the anti-dropping flange41. The effect of the bevel guide lug43is as disclosed in previous paragraph, the anti-dropping flange41can cross the perforation23more smoothly under the guidance of bevel face.

As shown inFIG. 2, in this case, the first inserting part31and the second inserting part32of the segmented positioning member30are formed on partial hole wall of the perforation23of the seat21, forming the configuration that the first inserting part31, the second inserting part32and the perforation23are arranged at the same height. The implementation pattern disclosed in this case not only reduces the structure width of the present invention, but also further reduces the height, enhancing the miniaturization.

As shown inFIG. 3, in this case, the perforation23is formed with at least one wing hole part235fitting the at least one abutment plate13, so that the first inserting part31, the second inserting part32and the at least one wing hole part235are staggered from each other.

As shown inFIG. 17, in this case, the perforation23is formed with at least one wing hole part (mark number omitted) fitting the at least one abutment plate13, and one wing hole part is used as the first inserting part31.

As shown inFIG. 9, in this case, the first inserting part31and the second inserting part32of the segmented positioning member30are formed on the bottom of the seat21, forming the configuration that the first inserting part31, the second inserting part32and the perforation23are arranged at different heights.