JP2003340735A - Wrench - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wrench for easily tightening or loosening a screw at any place by combining a body with a handle even when the screw is in a narrow place or in a recess. <P>SOLUTION: A wrench body 1 having a ratchet type socket and an insert hole is connected to a handle 2 having a spline hole 24b on both ends in which the positions of the spline holes or angles between the axis of the handle and a surface of the spline hole are set different from each other by a connection member having a columnar part and a spline shaft, and a wrench is used in a diversified manner by combination thereof. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrench for tightening and loosening bolts and nuts. 2. Description of the Related Art The simplest manual wrench for tightening and loosening screws is such that a head portion and a handle portion which engage with the screws are fixed integrally, so that the side of an obstacle or It was very difficult to tighten the screws in narrow places. For this reason, there have been developed ones in which the length and shape of the handle portion have been changed and those in which the head portion and the handle portion are pivotally supported so as to be able to swing back and forth. However, when tightening or loosening a screw in a place where the wrench can be inserted in a narrow and deep place, the wrench does not reach the target screw, or if it does, there is not enough space to swing the handle, so tighten the screw. It could not be loosened and required extra work, such as removing obstacles. [0003] In order to solve this problem, a wrench disclosed in Utility Model Registration No. 30101717 or JP-A-2001-121435 is known. In the former invention, a head portion and a handle portion are pivotally supported to be able to swing back and forth and right and left, and a socket having a ratchet mechanism is provided in the head portion. Further, in the latter invention, the insertion angle having a ratchet mechanism is provided in the head portion, which is similarly pivotally supported, swingable in the front-rear direction, and rotatable in the left-right direction. However, since the shape of the handle of each wrench is a simple bar and the type and direction of the head portion are limited, the above-mentioned problem has not been completely solved. SUMMARY OF THE INVENTION An object of the present invention is to easily tighten and loosen screws in various situations such as a narrow place and a deep place. [0005] In order to achieve the above object, the present invention provides a wrench body having a ratchet mechanism and having an insertion hole at one end capable of engaging an insertion angle, A handle provided with spline holes at both ends and the position of each spline hole or the angle between the handle axis and the spline hole surface is set to be different from each other, a retaining portion, a cylindrical portion, a spline shaft that fits the spline hole, a difference The wrench body is formed by a connecting member having an insertion angle and holding means set at a boundary between a cylindrical portion and a spline shaft, wherein the spline shaft is engaged with the spline hole, and the insertion angle is engaged with the insertion hole. The handle and the handle are combined, and the spline hole and spline shaft are fitted together to select and fix the angle between the main body and the handle. By fitting the spline hole and the cylindrical portion, the main body becomes rotatable with respect to the handle, and various modes can be selected by using the spline holes at both ends of the handle and the front and back. It is characterized by. Embodiments of the present invention include:
It comprises a socket 11 having a ratchet mechanism, a wrench body 1 having an insertion angle 12, a handle 2 having spline holes 24 at both ends, and a connecting member 3 for connecting these. It is preferable that various modes can be selected depending on the connection method. An embodiment of a wrench according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view of a wrench according to an embodiment of the present invention, showing a state before connecting respective components. FIG. 2 is a front view (FIG. 2A) and a plan view (FIG. 2B) of the wrench, showing a state where the wrench body 1 and the handle 2 are connected via a connection member 3. FIG. 3 and FIG. 4 are views showing an example of use of the wrench. The wrench body 1 is provided at both ends with a socket 11 fitted to a screw and a insertion hole 12 fitted to an insertion angle of a spinner handle or the like. The socket 11 is provided with a ratchet mechanism. By operating the switching lever 13, the socket 11 can be rotated in one direction clockwise or counterclockwise. In addition, the socket 11 is provided with holes to be fitted with screws on both sides, and two types of a deep socket 11a and a shallow socket 11b are set. It is set so that the insertion angle can be inserted and fixed from either side. The handle 2 has a handle portion 21 having a sufficient length, rising portions 22a and 22b symmetrically connected from both ends thereof at a fixed angle symmetrically with respect to the longitudinal direction of the handle, and spline portions 23a and 23a. 23b and spline holes 24a, 24 provided in the spline portion 23
b. The angle A between the spline portion 23a and the rising portion 22a and the angle B between the spline portion 23b and the rising portion 22b are both set to 45 degrees.
The angle C between the spline 23b and the handle 21 is set to 10 degrees while the spline 23a and the handle are set in parallel. Further, the width is widened from the handle portion 21 to the rising portion 22 and the spline portion 23 so that the shape is easy to grasp. The connecting member 3 has a retaining portion 31 having a diameter larger than that of the spline hole 23, a cylindrical portion 32 having a diameter which can be inserted into the spline hole 23 and rotated without resistance, and a spline. A spline shaft 33 having a spline shape corresponding to the hole 23 and an insertion angle 34 corresponding to the insertion hole, and a holding portion having a sufficient holding capacity is provided at a boundary between the cylindrical portion 32 and the spline shaft 33. Means 3
5 are provided. The retaining portion 31 prevents the connecting member 3 from falling off when the connecting member 3 is attached to the spline hole. By providing the retaining portion 31, the connecting member 3 must be inserted into the spline hole from the insertion angle 34 direction. It cannot be mounted, and cannot be removed unless it is in the same direction. The holding means 35 is provided with a non-through hole (not shown) in the cylindrical portion 32, and a spring (not shown) and a steel ball are inserted and caulked so that the steel ball does not protrude from the non-through hole. is there. In addition, a ring 36 for retaining is provided at the tip of the insertion angle 34. In the wrench of this embodiment, depending on the method of use, a force may be applied in the direction in which the wrench body and the handle come off or in the direction in which the use mode is switched. It is. In the wrench of the present embodiment comprising the above three parts, the insertion hole of the wrench body 1 is fitted to the insertion angle of the connection member 3 with the connection member 3 inserted into the spline hole 24. Thus, the wrench body 1 and the handle 2 can be connected. At this time, the spline holes 24a or 24b
The user can select two types of usage modes having different rising angles, and by selecting which side of the front and back sides of each spline hole the connecting member 3 is inserted into, various modes depending on the situation as shown in FIG. Can be selected for use in a wide variety of locations. Specifically, as shown in FIG. 3A, by selecting the spline hole 24a and connecting the wrench body 1 to the handle portion side, it can be used as a straight long ratchet wrench. Further, as shown in FIG.
By selecting 4a, inserting the connecting member 3 from the inside and connecting the wrench body 1 to the outside, the screw 51 can be tightened and loosened while avoiding the obstacle 50. Further, the spline hole 24b is selected as shown in FIG.
By inserting the wrench body 1 on the outside and inserting the wrench, the screw can be tightened and loosened from an oblique position. In addition, since the sockets 11a and 11b are both usable and have different lengths, it is possible to select from more usage forms depending on which one is used. Further, the wrench of this embodiment slides the connecting member fitted in the spline hole,
That is, by selecting a portion to be engaged with the spline hole to be a cylindrical portion or a spline shaft, the handle and the wrench body can be used fixedly or rotatably. Furthermore, in this embodiment, since the number of spline holes and spline shafts is 24, the angle between the handle and the wrench main body can be set in increments of 15 degrees. FIG. 4 is a diagram showing an example of a usage method in a rotatable state. When the wrench main body 1 and the handle 2 are connected by engaging the spline hole 24 with the cylindrical portion 32, the wrench main body 1 is rotatably connected to the handle 2.
In this state, the wrench main body 1 and the handle 2 are set as shown by a solid line in FIG. 4, and the ratchet mechanism is set in the socket 11 by pushing and pulling the handle 2 in the axial direction. When the socket 11 is pushed out in the direction, the socket 11 idles due to the ratchet mechanism, and when the socket 11 is pulled in the direction B, the socket 11 does not rotate but the screw can be loosened by the ratchet mechanism. Of course, if the switching lever 13 is operated, the screw is tightened when the handle 2 is pushed in the direction A, and the socket 1 is pulled when the handle 2 is pulled in the direction B.
It is also possible to make 1 idle. Further, if the same operation is performed at a position symmetrical with respect to the axis of the handle 2 with respect to the position of the wrench main body 1, the same effect can be obtained although the operation method becomes symmetric. That is, when the handle 2 is pushed in the direction A, the screw is loosened, and when the handle 2 is pulled in the direction B, the wheel 2 runs idle. By operating the lever, it is possible to idle when pushed in the direction A and to tighten the screw when pulled in the direction B. Therefore, when the wrench body 1 and the handle 2 are rotatably connected, the screw can be tightened and loosened only by the reciprocating motion of the handle 2. With this function, the screw 5 cannot be tightened or loosened without removing the obstacle 51 in the case of the conventional wrench, whereas the wrench of the present embodiment has a sufficient handle 2 in addition to the state of FIG. Due to the length, screws at any place such as hard to reach parts can be easily tightened and loosened. It should be noted that the above is only one example,
The present invention is in no way limited to the above embodiments.
For example, in the present embodiment, a steel ball type holding means is used as the holding means 35, and the ring 36 is used as the insertion angle holding means. However, any type may be used as long as it can reliably hold the spline hole or the insertion hole. There is no need to do it. In addition, the setting of the angle with respect to the handle 21, the rising part 22, and the spline part 23 does not necessarily have to be the same as in this embodiment. Further, it goes without saying that the present invention can be carried out in a state where various improvements easily conceived by those skilled in the art are applied. According to the wrench of the present invention, use in various modes can be selected depending on how the handle and the wrench body are combined. Specifically, either of the spline holes provided at both ends of the handle is used. You can choose whether to use it on the front or back side, insert the connecting member from which side, or connect the wrench body in which direction, and tighten the screws in narrow or recessed places In addition, the wrench body can be fixed to the handle at a specified angle and can be freely rotated, so that it can be used in various work places.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a wrench according to an embodiment of the present invention, showing a state before assembling each component. FIG. 2 shows the wrench in a state where each part is rotatably connected. FIG. 2A is a front view,
FIG. 2B is a plan view. FIG. 3 is a diagram illustrating an example of a method of using the wrench. 3A shows a state in which a screw in a narrow and deep place is tightened, FIG. 3B shows a state in which the screw is tightened to avoid an obstacle, and FIG. 3C shows an oblique position. This shows a state in which the screw is tightened. FIG. 4 is a diagram showing an example of a method of using the wrench, in which each part is rotatably connected, and a handle is connected to an A-
It is a top view showing the state which reciprocated in B direction and the screw was loosened. [Description of References] 1 Wrench body 11a Deep socket 11b Shallow socket 12 Insertion hole 2 Handle 21 Handles 22a, 22b Rising portions 23a, 23b Spline portions 24a, 24b Spline holes 3 Connecting member 31 Retaining portion 32 Column portion 33 Spline shaft 34 Insertion angle 35 Holding means 36 Ring 50 Obstacle 51 Screw

Claims (1)

Claims: 1. A wrench comprising a wrench body having a ratchet mechanism, a handle, and a connecting member for connecting the wrench body, wherein the wrench body has a socket portion at one end for fitting screws. The other end is provided with an insertion hole into which an insertion angle can be fitted, and the handle is provided with spline holes at both ends, and the position of each spline hole or the angle between the handle axis and the spline hole surface is set to be different from each other. The connecting member has a retaining portion, a cylindrical portion, a spline shaft that fits the spline hole and an insertion angle, and holding means is set at a boundary between the cylindrical portion and the spline shaft. By inserting the spline shaft or column and fitting the insertion angle into the insertion hole of the wrench body, Engaging the ply shaft allows the angle between the main body and the handle to be selected and fixed, and engaging the spline hole and the cylindrical portion allows the main body to rotate freely with respect to the handle. And a wrench characterized in that various aspects can be selected by using the front and back sides.