Information
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Patent Grant
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6776071
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Patent Number
6,776,071
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Date Filed
Monday, March 10, 200321 years ago
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Date Issued
Tuesday, August 17, 200420 years ago
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Inventors
-
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Examiners
- Hail, III; Joseph J.
- Thomas; David B.
Agents
-
CPC
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US Classifications
Field of Search
US
- 081 60
- 081 58
- 081 583
- 081 591
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International Classifications
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Abstract
A stepless ratchet wrench structure includes a wrench body having a through hole at the center thereof for holding individual components and the bottom of the body being an integrally formed stepless circular disc seat, wherein a frictional slanting face of the circular disc seat faces upward, a stepless rotating structure including a spherical circular disc, a c-shaped fastening ring being a slot for insertion into the wrench body, and a holding rod structure having a rotating block with a circular hole at the center thereof, and the external being connected to a spring and a holding rod, the front end of the holding rod being a cylindrical body for insertion into the circular hole of the disc.
Description
BACKGROUND OF THE INVENTION
(a) Technical Field of the Invention
The present invention relates to ratchet wrench, and in particular, to a stepless ratchet wrench.
(b) Description of the Prior Art
FIG. 1
is a perspective view of a conventional ratchet wrench having a wrench body being provided with a cavity containing ratchet gear, ratchet block, triggering plate and an elastic element, wherein when the ratchet wrench is triggered, the ratchet gear rotates along the circumferential edge to a position, the teeth of the ratchet block urges the teeth of the ratchet gear, and the wrench can be rotated tightly or loosen.
The shortcoming of the ratchet wrench is that there is insufficient torque, and fine adjustment is not possible as a result of the problem caused by the tolerance between the individual teeth. Therefore, it is troublesome when a specific specification of the ratchet wrench is used.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a stepless ratchet wrench structure, wherein the problem due to insufficient torque is overcome and a holding rod structure is provided to secure the above ratchet wrench structure.
Yet another object of the present invention is to provide a stepless ratchet wrench structure, wherein the problem caused by the tolerance between the individual teeth is solved.
A further object of the present invention is to provide a stepless ratchet wrench structure, wherein the holding rod can swing within a small space.
The foregoing object and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.
Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
is a perspective view of a conventional ratchet wrench.
FIG. 2
is a perspective view of a ratchet wrench of the present invention.
FIG. 3
is a sectional view along line A—A of
FIG. 1
of the present invention.
FIG. 4
is a sectional view along line B—B of the present invention.
FIG. 5
is a schematic view with the present invention.
FIG. 6
is a schematic view along line B—B of the present invention.
FIG. 7
is another schematic view along line B—B of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The following descriptions are of exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.
Referring to
FIGS. 2
, and
3
, there is shown a stepless ratchet wrench structure comprising a wrench body
1
having a through hole
11
at the center thereof for holding individual components and the bottom of the body
1
being an integrally formed stepless circular disc seat
12
, wherein a frictional slanting face of the circular disc seat
12
faces upward; a stepless rotating structure
2
including a spherical circular disc
21
, wherein the center of the circular disc
21
is provided with a circular spherical ball
210
, and the spherical ball
210
is extended out with an arm
211
connected to the wall face of the inner diameter of the circular disc
21
and the top and bottom plan
212
,
212
′ of the circular disc
21
are provided with rotating friction for the top and bottom component, the top end of the circular disc
21
is corresponding to a slanting stepless face, and the circular disc
21
and the bottom
223
of the disc
21
has an angle and provides rotational friction for the top end plan of the circular disc
21
, the external diameter of the circular disc
21
is provided with a slot
221
and a circular hole
222
from top to bottom, which is formed into a “cross”, the top end of the circular disc
21
is corresponding to a connecting shaft
23
having a top end mounted with a connector, and the bottom end of the connecting shaft
23
is extended to a shaft center
231
of an appropriate length, the radial of the shaft center is provided with a slot
233
of an appropriate depth, and the circular slot
233
with an appropriate depth is provided at the center of the slot so as to provide connection for the stepless circular disc
22
and the spherical circular disc
21
, and the spherical body
210
is inserted into the circular hole
233
.
A c-shaped fastening ring
3
is a slot for insertion into the wrench body
1
to provide limiting function for the stepless rotating structure
2
, and a holding rod structure
4
is a rotating block
41
with a circular hole
411
at the center thereof, and the external thereof is connected to a spring
42
and a holding rod
43
, the front end of the holding rod
43
is a cylindrical body
431
for insertion into the circular hole
222
of the disc
22
, as shown in FIG.
4
.
As shown in
FIG. 5
, the connection shaft
23
is inserted into a spherical circular disc
21
and a slanting stepless circular disc
22
which is connected to the slanting stepless circular disc
12
. The sphere
210
of the spherical circular disc
21
is mounted to the shaft center
231
of the connection shaft
23
. When in rotation, the slanting stepless circular disc
22
at the top end thereof is driven by the sphere
210
and the arm
211
, and the top plan
212
of the spherical circular disc
21
and the bottom portion
223
of the slanting stepless circular disc
21
, and the bottom plan
212
and the frictional slanting face
13
of the circular disc seat
12
are frictionally rotating when the holding structure
4
is stationary, the rod
43
and the spring element
42
are extended to the circular hole
222
of the slanting stepless circular disc
22
so that the rotating structure
2
is stationary.
As shown in
FIG. 6
, when the connection shaft
23
rotates to an angle the contact faces of the spherical disc
21
, the slanting stepless circular disc
22
and the slating stepless circular disc seat
12
are rotated frictionally. The holding rod
43
and the elastic element
42
are moved backward as a result of pressing by the slanting stepless circular disc
22
. Next, when the holding rod is at an angle, the holding rod
43
is pushed externally by the external force of the elastic element
42
, and the slanting stepless circular disc
22
moves forward to secure (as shown in FIG.
7
).
It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above.
While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention.
Claims
- 1. A stepless ratchet wrench structure comprising:(a) a wrench body having a through hole at the center thereof for holding individual components and the bottom of the body being an integrally formed stepless circular disc seat, wherein a frictional slanting face of the circular disc seat faces upward; (b) a stepless rotating structure including a spherical circular disc, wherein the center of the circular disc is provided with a circular spherical ball, and the spherical ball is extended out with an arm connected to the wall face of the inner diameter of the circular disc and the top and bottom plan of the circular disc are provided with rotating friction for the top and bottom component, the top end of the circular disc is corresponding to a slanting stepless face, circular disc and the bottom of the disc has an angle and provides rotational friction for the top end plan of the circular disc, the external diameter of the circular disc is provided with a slot and a circular hole from top to bottom, which is formed into a “cross”, the top end of the circular disc is corresponding to a connecting shaft having a top end mounted with a connector, and the bottom end of the connecting shaft is extended to a shaft center of an appropriate length, the radial of the shaft center is provided with a slot of an appropriate depth, and a circular hole with an appropriate depth is provided at the center of the slot so as to provide connection for the stepless circular disc and the spherical circular disc, and the spherical body is inserted into the circular hole; (c) a c-shaped fastening ring being a slot for insertion into the wrench body; and (d) a holding rod structure having a rotating block with a circular hole at the center thereof, and the external being connected to a spring and a holding rod, the front end of the holding rod being a cylindrical body for insertion into the circular hole of the disc.
US Referenced Citations (5)