MXPA99001035A - Portabrocas de drill with conduits of quijadaque make ju - Google Patents

Abstract

A bit holder device for use with a manual or activated impeller has a body member with a plurality of angularly positioned conduits formed therethrough. A jaw is slidably placed in each conduit. Each jaw has a tool engaging face formed on one side and threads formed on the opposite side. The jaws are threadedly engaged with the rotating nut mounted on the body member. A sleeve member is in rotational contact with a nut whereby the rotation of the sleeve causes the nut to rotate and the jaws to advance or retract within their respective conduits. Each jaw and its respective conduit has a unique coincident profile different from the other jaws and respective conduits so that the jaws can not be exchanged with different conduits in the chuck.

Description

DRILL CHUCK ROUGH WITH QUIJADA AND QUIJADA DUCTS THAT MAKE A GAME BACKGROUND OF THE INVENTION The present invention relates generally to drill chucks for use with drills or with pneumatic or electric energy impellers. Both tool drivers of pneumatic or electric energy are well known. Any number of conventional tools are used with such impellers, such as drill bits, screw drives, nut drives, rotary drills, grinding stones and other cutting or abrasion tools. The energy impellers are conventionally configured with a chuck which is adjustable over a relatively wide range to support the tools in a rotating spindle of the energy impellers. The chuck can be attached to the impellers through a threaded or tapered hole, or other conventional clamping mechanisms.

A wide variety of chuck has been developed in the art. In one form of the drill chuck, the circumferentially spaced jaws, and spaced approximately 120 ° apart from one another, are constrained by angularly positioned conduits in a body attached to the drive shaft and configured so that the rotation of the body in relation to a nut constrained engagement with the jaws forces said jaws to a grip relationship with respect to the handle of a tool bit, while rotation in the opposite direction releases the grip relationship. Such a chuck can be keyless and is rotated by hand. Tale keyless chucks are well known to those experts in art. The jaws make contact with the drive nut by means of the threads having the same inclination for all the jaws. In this way, the jaws advance to the same degree on the rotation of the nut. However, it is important that the jaws move longitudinally so that in their fully extended position, the jaws have the same longitudinal extension and are located in the axis of the tool hole defined by the body of the chuck. For this reason, with conventional multiple thread jaws, the threads are sequentially and variably decentered from the ends of the jaw blades to take into account the circumferential spacing of the jaws and to ensure that the jaws are on the shaft of the chuck. in its fully extended position. Therefore, the jaws are not interchangeable in a conventional chuck and it is extremely important that the jaws are placed in the correct order inside the chuck during the fabrication and the assembly process. This requires a time-consuming and tedious process. If the jaws are not placed in the correct order, the chuck does not work properly and must be disassembled and reassembled in the proper order.

With conventional chucks the body member is typically formed from a supply of metal bar and the jaw conduits are machined through the bar supply. The machine process therefore requires that the ducts be essentially circular and uniform in cross section. The jaw blades have a correspondingly shaped perf and are not generally distinguishable from each other except for the offset in the threads of quija OBJECTS AND SYNTHESIS OF THE INVENTION It is therefore a principal object of the present invention to provide a chuck device within the jaw blades that uniquely coincides with the respective individual conduits thereby simplifying assembly and the manufacturing process.

It is another object of the present invention to provide a chuck that can be assembled and manufactured in a cost effective manner.

It is another object of the present invention to provide an improved chuck having a core body molded with different and distinctive jaw conduits for each respective jaw.

The additional objects and advantages of the invention will be set forth in part in the following description or will be obvious from the description, or may be learned through the practice of the invention.

In accordance with the objects and purposes of the invention, a chuck is provided for use with energized or manual drives having a rotating drive shaft. The chuck is conventionally mounted on the drive shaft and provides a mechanism for holding a tool to the power driver. The chuck has a body member having a nose section and a tail section. The nose section has an axial hole formed therein a plurality of angularly positioned conduits formed therethrough and intersecting the axial hole. A plurality of jaws are slidably placed in the angularly positioned conduits. Each of the jaws has a tool engaging face formed on one side thereof and threads formed on the opposite outer surface d thereof. A nut is rotatably mounted on the body member and is in contact with the threads on the jaws. A sleeve member is in rotational contact with the nut so that when the sleeve is rotated co with respect to the body member, the jaws will move within their respective conduits. According to a main object of the invention, each jaw and its respective conduit have a unique coincident profile different from the other jaws and the respective conduits so that the jaws can not be interchanged with different conduits. Therefore, it is virtually impossible to mix or exchange the jaws in the chuck assembly.

In a preferred embodiment of the invention, each of the conduits has a transverse section profile of different multiple sides, for example a generally rectangular profile. At least one feature, such as a corner side, of the multi-sided profile is different for each conduit. The jaw designed for the respective conduit has a corresponding matching profile. It is preferred that the jaws have essentially the same profile on the sides d thereof defining the threads. In other words, the jaws must each have the same threaded length in a cross-sectional view thereof.

Preferably, the chuck body member is molded from a moldable material, such as either plastic material or a nylon material filled with glass. Other moldable materials are known to those skilled in the art and are within the scope and spirit of the manufacturer. invention. Since the body member is molded, the profiles for the ducts can be molded directly and the subsequent machining of the ducts is not necessary. Therefore, the manufacturing and the additional assembly time and processes are eliminated. However, it should be understood that the present invention is not limited to the body members molded to the molded conduits. Although it would involve a relatively complicated machine, it is possible and within the spirit of the invention to machine different jaw conduits profiled in a metal bar supply body member.

It should be appreciated that any manner of profile changes, keyed surfaces, etc., can be configured with the jaws and ducts so that only one jaw will fit in each duct. The geometry of the conduct and the jaws can be varied indefinitely in this aspect. Such variations and modifications are within the spirit scope of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view of a chuck according to the invention; Figure 2 is an end view of the chuck shown in Figure 1 taken along the lines indicated; Figure 3 is a perspective view and cross-sectional view of a jaw blade according to the invention; Figure 4 is a perspective view and cross-sectional view of a different jaw blade; Y Figure 5 is a perspective view and cross-sectional view of yet another jaw blade configured differently from the chuck illustrated in Figure 1.

DETAILED DESCRIPTION OF THE PREFERRED INCORPORATIONS Reference will now be made in detail to the presently preferred embodiments of the invention, one or m examples of which are illustrated in the drawings. Each example is provided to explain the invention, and it is not intended to limit said invention. For example, the features illustrated or described as part of an embodiment can be used in another embodiment to delve into an additional modality. try that the present description include such modifications and variations.

Referring to Figure 1, a chuck according to an embodiment of the present invention is illustrated. The chuck 10 includes a front sleeve member 20, a body member 12 and the jaws 14. The body member 12 has a generally cylindrical nose or front section 22 and a rear tail section 24. An axia hole 26 is formed in the nose section 22 of the body member 12. The axial hole 26 is at least as large as the larger tool sleeve that the chuck 1 is designed to accommodate. A hole 28 is formed in the col section 24 of the body member 12 and can be formed with the internal threads 40 or can be fixed to a threaded insert member (n shown), any of which is adapted to coincide with an axis or Drive impeller spindle activated (not shown). It should be appreciated that any conventional and known mounting mechanism or device can be used in the present invention to mount the chuck 10 in the drive spindle.

The conduits 18 (18a, 18b, and 18c in Figure 2 are formed in the body member 12 to accommodate the jaw 14. Each conduit includes an outer circumferential wall 19. In a preferred embodiment, jaws 14 are used, and each jaw 14 is separated from the adjacent jaw by an arc of approximately 120 ° .. The axis 30 of ch conduit 18 and the respective jaw 14 are angled co with respect to the jaw axis but intersect with the jaw axis 31 at a common point beyond the nose section 22 of body member 12. For example, as seen in Figure 1, in its fully extended position, the jaws 14 s meet on the axis 31 of the hole 26 at the point forward of the nose section 22. As illustrated in Fig. 1, it is important that the three jaws 14 meet and essentially the exact same location in their fully extended position.

Each jaw 14 has a tool engaging face 32 which is generally parallel to the body axis 14, and a rear end or face 35. Each jaw 1 also has the threads 34 formed on its opposite outer surface. The threads 34 may have any predetermined inclination and all the jaw threads 34 have the same inclination.

A nut 16, preferably a unit nut, includes the threads 17 in threaded contact with the threads 34 on the jaws 14. In this manner, when the nut 1-6 is rotated with respect to the body 12, the jaws will be advanced or retracted inside. of the conduit 18. The nut 16 is rotatably coupled with the sleeve member 20 so that with the rotation of the sleeve member 20 the nut 16 also rotates to retract or advance the nuts 14.

Any number of variations configurations can be used in the present invention to retain the sleeve 20 and the nut 16 in relation to the body member 12 and also to rotationally couple the nut 16 the sleeve 20. For example, in the embodiment illustrated in Figure 1 , the sleeve 20 is rotationally coupled to the nut 16 via a pressure adjustment 38. Alternatively the inter-engaging members, such as the flanges or driving dogs, can be used. Alternatively, the nut 16 and the sleeve 20 can be co-molded. All such modifications and configurations of the sleeve and the nut are within the scope and spirit of the invention and are not particularly important to the present invention.

Figure 1 also illustrates a nose piece 3 fitted over the nose section 22 of the body member 12 In an embodiment, the nose piece 36 can be used to hold the sleeve 20 in relation to the body member 12 and the nut 16. In an alternate embodiment, the nose piece 3 can be provided as a reinforcing and protective member particularly where a sleeve 20 and the nut 16 are press-fitted together. The nose piece 36 is not essential for the present invention and the configurations of the chuck device 10 are not needed in all.

Referring to Figures 3 to 5, the individual jaws 14 of the chuck 10 illustrated in Figures 1 to 2 are shown. It can be seen in the Figures that each quijad has the threads 34 and a tool engaging face 3 defined on the opposite side thereof. The tool engaging surfaces 32 are uniform for each of the jaws and are inclined or angled so that they lie essentially parallel to the longitudinal axis 31 of the chuck 1 when the jaws 14 are placed in the angled conduits 18. The threads 34 are of the same inclination for each one of the jaws. However, the distance 56 from the end 35 d of each jaw where the threads 34 start is different for each jaw. This decentered distance is required since the jaws are spaced circumferentially around the drive nut 16 but must advance and retract as the jaws will be exactly in the longitudinal ej of the body 12 in its fully extended position, as illustrated in the Figure 1.

According to an important aspect of the invention, each conduit 18 and its corresponding jaw 1 have a unique characteristic or profile that allows only the respective jaw 14 to be slid into its respective conduct 18. For example, referring to FIGS. 5, e side 37 of each conduit 18 corresponds to the side 54 of jaw ch 14. However, as can be seen from the Figures, profile 48 of the jaw shown in Figure 3 will fit only the profile 18a shown in Figure 2. Similarly, the profile 46 of the jaw 14 illustrated in Figure 4 will fit sun in the duct 18b. The profile 44 of the jaw shown in Figure 5 will fit only in the profile 18c of the duct illustrated in Figure 2.

In a preferred embodiment illustrated in the Figures, the respective jaws and conduits have a generally rectangular shape. However, it should be appreciated that the cross-sectional profiles may have any geometric shape provided that at least one characteristic key condition of each profile is different between the three jaws and the respective conduits so that the jaws can not be interchanged between the ducts. . Also, it is preferred that the threads 34 of each jaw have the same cross-sectional extension 57 so that each quijade has the same degree of threaded engagement with the nut 16. Thus, the key or distinguishing feature of the jaw can define on any of the remaining sides or surface. For example, referring to Figure 3, side 5 has two angled or chamfered corners. Referring to Figures 4 and 5, the sides 54 have the corners chamfered or angled at opposite angles. The sides of the respective conduits 18 to 18c illustrated in Figure 2 are correspondingly shaped. The profiles of the jaws and conduit can also be thought of as having different lengths It should be appreciated that the profiles configured differently illustrated and described herein are but an example of the infinite number of ways to uniquely distinguish each respective jaw and conduit. For example, each respective conduit jaw may have an entirely different geometrical shape such as circular, rectangular and square. It is well within the level of those skilled in the art to conceive any of a number of distinguishing features or key features to ensure that the jaws can not be interchanged with the conduits.

Preferably, the body member 12 is formed of a moldable material, such as a plastic material or a nylon material filled with glass. All moldable materials are within the scope of the invention. Since the body member 12 is molded, the uniquely shaped conduits 18 can be molded directly into the body member 12. In this manner, the conduits n require machining in the body member 12 and, therefore, do not require maintaining a generally circular shape. However, it is within the scope and spirit of the invention that the body member 12 comprises a metal component that the conduits are coordinated with a machined feature. Similarly, the jaws 14 are preferably a hard metal and their non-uniform profiles are machined surface. The invention is not limited, however, to the metal jaws with the machined surfaces. Any conventional material and the means to form the jaws is within the scope and spirit of the invention.

It should be appreciated that the jaws and conduit profiled in a unique manner according to the invention can be configured in any conventional chuck. For example, the invention is applicable to key chucks with chuck chucks without keys and any other drill chuck forms where the individual jaws are threadedly moved in the conduits. Therefore, it should be understood that various modifications and variations may be made within the present invention without departing from the spirit and scope of the invention. It is intended that the present description include such variations and modifications as fall within the spirit and scope of the claims and their equivalents.

Claims (25)

R E I V I N D I C A C I O N S

1. A chuck for use with a manual or activated impulse having a rotary drive shaft, chuck chuck comprises: a body member having a nose section and tail section, said nose section having an axial hole formed therein and a plurality of angularly positioned conduits formed therethrough intersecting said axial hole; a plurality of slidably placed jaws positioned in said angularly positioned conduits, each said jaws having a tool engaging face formed on one side thereof and threads formed on an opposite outer surface thereof, - a nut rotatably mounted on it. member of body in contact with said threads on the jaws; a sleeve member in a rotating drive contact with said nut whereby said sleeve is rotated with respect to the body member; said jaws move so much; and wherein each jaw and its respective conduit have a unique coincident profile different from that of other jaws and respective conduits so that the jaws can not be exchanged with different conduits.

2. The chuck as claimed in clause 1 characterized in that each of said conduct has a cross-section profile of different sides multiple.

3. The chuck as claimed in clause 2 characterized in that at least one side similarly placed of each of the conduits has a different length.

4. The chuck as claimed in clause 2 characterized in that said conduits have at least one corner formed differently.

5. The chuck as claimed in clause 1 characterized in that each of said conduit has a different cross-sectional profile, and said respective jaws have matching cross-sectional profiles.

6. The chuck as claimed in clause 1 characterized in that said strip surface having said threads formed thereon has the same length in cross section for each of said jaws and a matching side of each respective conduit having the same length in cross section.

7. The drill chuck as claimed in clause 1 characterized in that said body member is a component integrally molded with said differently profiled conduits molded directly therein.

8. The drill chuck as claimed in clause 7 characterized in that said body member is molded from a plastic material or from a material filled with glass.

9. The chuck as claimed in clause 7 characterized in that said body member is molded of one of a plastic material or of a nylon material filled with glass and said jaws are machined of metal.

10. The chuck as claimed in clause 9 characterized in that said jaws have a non-uniform multiple-sided profile.

11. The chuck as claimed in clause 1 characterized in that said sleeve member is rotationally coupled to said nut through a co-pressure adjustment.

12. The chuck as claimed in clause 11 further characterized in that it comprises, a member of measuring piece placed on the nose section of said body member, said nose piece member retains the sleeve in contact with the nut.

13. A chuck for use with a manual or activated impulse having a rotary drive shaft, chuck chuck comprises: a molded body member integrally having a nose section and a tail section, said nose section having an axial hole formed therein and a plurality of angularly positioned conduits formed therethrough and intersecting said axial hole, each said The conduit has a profile that is different in at least one characteristic of the conduits; a plurality of jaws slidably positioned in said angled ducts, with one of said jaws having a tool engaging face formed on one side of the jaws. same and threads formed on the opposite upper surface thereof, each of the jaws further comprises a surface with a key that is different on each of said jaws where the keyed surface allows said jaw to slide from only one conduit respective; a nut rotatably mounted on the body member and in contact with the threads on said jaws; Y a sleeve member in a rotational drive hitch with said nut whereby said sleeve is rotated with respect to the body member, said jaws will therefore be moved.

14. The chuck as claimed in clause 13 characterized in that said body member is molded from a plastic material.

15. The drill chuck as claimed in clause 13 characterized in that said body member is molded from a nylon material filled with glass.

16. The chuck as claimed in clause 13 characterized in that said conduits are molded directly into the body member.

17. The chuck as claimed in clause 13 characterized in that said conduits have a profile in generally rectangular cross section with at least one side thereof having a different configuration in each of said conduits.

18. The chuck as claimed in clause 13 characterized in that said jaws have a profile in generally rectangular cross section with a keyed surface comprising a side configured differently on each of said jaws.

19. The chuck as claimed in clause 13, characterized in that each of the conduits has a different cross-sectional profile of multiple sides.

20. The drill chuck as claimed in clause 19, characterized in that at least one of the similarly positioned ladder of each conduit has a different length.

21. The chuck as claimed in clause 19 characterized in that said conduits have at least one corner formed differently.

22. The chuck as claimed in clause 13 characterized in that each of said conduct has a different cross-sectional profile, and respective jaws have matching cross-sectional profiles.

23. The chuck as claimed in clause 13 characterized in that said jaw surface has threads formed thereon and has an equal cross sectional length for each of said jaws, and coincidental side of each respective conduit has a length in section equal cross

24. The drill chuck as claimed in clause 13, characterized in that said threads on the jaws have the same inclination and are offset by different lengths from one end of said jaws.

25. A force tool having a rotary drive spindle and a chuck configured on it to hold a tool bit for said drive spindle, said chuck further comprising: a molded body member integrally having a nose section and a tail section, The nose section has an axial hole formed therein and a plurality of angularly positioned conduits formed therethrough and intersecting said axial hole, each conduct having a profile that is at least different from one of the other conduits; a plurality of jaws slidably positioned in said angularly positioned conduits, with one of said jaws having a tool engaging face formed on one side thereof and threads formed on an opposite outer surface thereof, each said jaw further comprising a keyed surface that is different on each of said jaws wherein the keyed surface allows said jaw to slide within only one respective conduit, - a nut rotatably mounted on said body member and in contact with the threads on said jaw. jaws; Y a sleeve member in a rotational drive coupling with said nut so that the sleeve is rotated with respect to said body member, said jaws will therefore be moved. SUMMARY A chuck device for use with a manual or activated impeller has a body member with a plurality of angularly positioned conduits formed therethrough. A jaw is slidably placed in a canal. Each jaw has a tool engaging face formed on one side and threads formed on the opposite side. The jaws are threadedly engaged with the rotating nut mounted on the body member. A sleeve member is in rotational contact with a nut so that the rotation of the sleeve causes the nut to rotate and the pins advance or retract within their respective conduits. The jaw and its respective conduit have a unique coincident profile different from the other respective jaws and conduits so that the jaws can not be interchanged with different conduit in the chuck.