Patent Application
20200018355
The present invention relates to a driving tool and, particularly to a driving tool including universal rotating structure.
U.S. Patent Application Number 20170082151 shows a drive universal joint with anti jamming design. The drive universal joint includes a first drive joint member and a second drive joint member movably coupled to the first drive joint member. The first and second drive joint members are movable relative to each other between an aligned position and a maximum angled position. The first drive joint member includes a joining end defining a compartment with an inner peripheral wall thereof including six edges. Each of the edges has a convex contour. Each of the edges has an anti jamming design. The anti jamming design defines a recess extending radially into an apex region of the edge. The second drive joint member includes a joining end defining a body. The body is disposed in the compartment and enclosed by the six edges. The body includes an outer peripheral wall thereof including six sides. Each of the sides has a convex contour. One of the sides is constrained to face one of the edges and the anti jamming design on each of the edges avoids physical contact with each of sides to prevent the body of the second drive joint member from getting stuck in the compartment of the first drive joint member and unable. It is, however, difficult to manufacture the first and second drive joint members and the anti jamming design easily.
The present invention is, therefore, intended to obviate or at least alleviate the problems encountered in the prior art.
A driving tool with universal rotating structure includes a first drive joint member and a second drive joint member. The first drive joint member defines a compartment and at least one slot. The compartment extends from a first end to a second end along a first axis. The at least one slot extends from a first end to a second end radially to the first axis. The first end of the at least one slot includes a first open end in communication with the compartment. The second end of the at least one slot includes a second open end extending through an outer periphery of the first drive joint member. The at least one slot includes at least one retaining member movably disposed therein. The outer periphery of the first drive joint member includes an enclosing ring disposed thereon. The enclosing ring is elastic and includes an inner periphery abutting against a side of the at least one retaining member. The second drive joint member includes a head rotatably coupled to the first drive joint member. The head is disposed in the compartment. The head extends from a first end to a second end concavely along a second axis and includes a first, second, and third section sequentially along the second axis. The head has a width direction which extends radially to the second axis and the first and third sections have widths smaller than a width of the second section.
There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are additional features of the invention that will be described hereinafter and which will form the subject matter of the claims appended hereto.
In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.
As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention.
Further, the purpose of the foregoing abstract is to enable the public generally, and especially the scientists, engineers and practitioners in the art who are not familiar with patent or legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure. The abstract is neither intended to define the invention, which is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.
Other objectives, advantages, and new features of the present invention will become apparent from the following detailed description of the invention when considered in conjunction with the accompanied drawings.
The first drive joint member 20 defines a compartment 21 and at least one slot 22. The compartment 21 extends from a first end to a second end along a first axis L1. The compartment 21 is of a non-circular cross section taken radially to the first axis L1. The cross section of the compartment 21 includes a plurality of protruded surfaces and a plurality of recessed surfaces alternatively disposed circumferentially. The at least one slot 22 extends from a first end to a second end radially to the first axis L1. The first end of the at least one slot 22 includes a first open end in communication with the compartment 21. The second end of the at least one slot 22 includes a second open end extending through an outer periphery of the first drive joint member 20. The at least one slot 22 includes at least one retaining member 23 movably disposed therein. The first drive joint member 20 defines two one slots 22 diametrically oppositely.
The outer periphery of the first drive joint member 20 includes an enclosing ring 24 disposed thereon. The enclosing ring 24 is elastic and includes an inner periphery abutting against a side of the at least one retaining member 23. The enclosing ring 24 is disposed outside of the at least one slot 22 and is adapted to impose an elastic force, in a direction toward the at least one slot 22, on the at least one retaining member 23. The enclosing ring 24 extends from a first end 241 to a second end 242 circumferentially. The enclosing ring 24 surrounds the outer periphery of the first drive joint member 20. The enclosing ring 24 includes a gap between its first and second ends 241 and 242. The at least one retaining member 23 and the enclosing ring 24 are made of metal. The at least one retaining member 23 is a spherical ball.
The second drive joint member 30 including a head 31 rotatably coupled to the first drive joint member 20. The head 31 is disposed in the compartment 21. The head 31 extends from a first end to a second end concavely along a second axis L2 and includes a first, second, and third section 311, 312, and 313 sequentially along the second axis L2. The head 31 has a width direction which extends radially to the second axis L2 and the first and third sections 311 and 313 have widths smaller than a width of the second section 312. The first section 311 is adjacent to the first end of the head 31. The second section 312 is between its first and second ends of the head 31. The third section 313 is adjacent to the second end of the head 31. The head 31 has an outer periphery extending concavely from the first end to the second end and abuts the at least one retaining member 23. The head 31 is of a non-circular cross section taken radially to the second axis L2. The head 31 is ball shaped and has hexagonal sides. The head 31 includes a plurality of first sides abutting the plurality of protruded surfaces respectively. The head 31 includes two of the plurality of first sides being diametrically opposite and measures a first width W1 therebetween. The head 31 includes a plurality of second sides facing the plurality of recessed surfaces respectively. The head 31 includes two of the plurality of second sides being diametrically opposite and measures a second width W2. The second width W2 is greater than the first width W1. Each of the plurality of second sides of the head 31 is not in contact with the corresponding one of the plurality of recessed surfaces. The head 31 applies a force on the at least one retaining member 23 in a direction opposite that of the elastic force.
The first drive joint member 20 also defines a groove 25 and includes anti-disengagement device 26 disposed in the groove 25. The anti-disengagement device 26 includes an outer periphery disposed in the groove 25 and an inner periphery disposed outside of the groove 25. A maximum width of the inner periphery of the anti-disengagement device 26 radial to the first axis L1 is smaller than the second width of the second section 312 of the head 31. The anti-disengagement device 26 is a clip. The clip is C-shaped.
In this embodiment, the second drive joint member 30 is adapted to be moved relative to the first drive joint member 20 axially along the first axis L1, as shown in
After the second section 312 of the head 31 second drive joint member 30 is in contact with the at least one retaining member 23, as shown in
The second embodiment differentiates from the first embodiment in that the driving tool 10a includes a positioning device 28a to position enclosing ring 24a. The first drive joint member 20a and the enclosing ring 24a respectively define a first hole 27a and a second hole 243a and the positioning device 28a is inserted into the first and second holes 27a and 243a. The first hole 27a extends from a first end to a second end radially to the first axis L1. The positioning device 28a keeps the enclosing ring 24a in position and prevents it from rotating relative to the first drive joint member 20a. Furthermore,
In view of the foregoing, with the elastic retaining member 23 and 23a, the second drive joint members 30 and 30a is elastically retained and buffered, thereby enabling it to rotate smoothly during operation.
The foregoing is merely illustrative of the principles of this invention, and various modifications can be made by those skilled in the art without departing from the scope and spirit of the invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 107123943 | Jul 2018 | TW | national |
