JP2007054936A - Single axis manual fastening device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a single axis manual fastening device capable of executing screw-feeding by converting rotary force imparted to a rotary spindle into inertia force and taking out high speed rotation from an output side by utilizing the inertia force, while making the most of the advantage of low torque which is a characteristic of manual operation. <P>SOLUTION: A rachet gear outer peripheral member 32 of a rachet gear 3 is fixed to one side side face of a ring-shaped body 1. One side end part of a joint 5 is fixed to an opposite side face of the ring-shaped body 1. The joint 5 is provided with a socket inserting part 2 at a position on an extension of a center shaft of the ring-shaped body 1. A rachet gear inner peripheral member 31 of the rachet gear 3 is fixed to an outer periphery of a rotary spindle 4. By imparting rotary force to the rotary spindle 4, the socket inserting part 2 is rotated and driven via the rachet gear 3, the ring-shaped body 1 and the joint 5. The socket inserting part 2 is continuously rotated till inertia force of a mass body constituted of the ring-shaped body 1 and the joint 5, etc. extinguishes. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a single-shaft manual tightening device used for screw tightening at the time of wheel mounting mainly for repair work in the automobile maintenance industry. It is possible to output a large number of rotations to the output side by giving a rotational force to the input side, and it is possible to select multiple usage methods according to each work process from the screw engagement process to the temporary tightening process It is related with the single axis | shaft manual clamping apparatus which becomes.

Conventional screw tightening manual tools and manual devices include generally recognized cross wrench (cross wrench), T-shaped wrench, L-shaped wrench, screwdriver wrench, and screwdriver socket. There are various wrench with socket insertion part. Furthermore, a ratchet gear wrench using a ratchet mechanism is known. When these manual tools and manual devices are classified by focusing on the input position (force point) of operational rotational force, the following (1) and (2) are obtained.
(1) One having an input position at a certain distance away from the center axis of rotation in which the tightening and loosening operations are performed in the rotational radius direction.
(2) It has a rotation radius at a position slightly away from the rotation center shaft for tightening or loosening, but directly rotates the rotation center shaft.
In general, these manual tools and manual devices are used alone or in combination with auxiliary parts and auxiliary devices.

On the other hand, as an improvement to the screwdriver socket, there has been a measure that uses the inertial force effectively by the rotational movement of the weight (handwheel) on the screw tightening shaft extension to speed up the screw feed. Yes (see, for example, Patent Document 1). In addition, in the cross wrench (cross wrench), the support part that can be gripped by hand on the extension of the screw tightening shaft has a cylindrical shape on the outer periphery of a round bar or the like serving as a fulcrum part in order to reduce the influence of frictional force. There are pipes that are supported by both ends being movable, and those that improve friction by reducing the frictional force using bearings etc. at both ends of the pipe to reduce friction. (For example, refer to Patent Document 2, Patent Document 3, and Patent Document 4). Furthermore, the cross wrench (cross wrench) of Patent Document 2, Patent Document 3, and Patent Document 4 is improved, and the rotary support shaft is divided into two parts so that the torque value can be detected in the temporary tightening process to the final tightening process. A device having a torsion member at its central shaft is known.
Japanese Utility Model Publication No. 50-50193 Japanese Utility Model Publication No. 51-74299 Japanese Utility Model Publication No. 56-62859 Japanese Utility Model Publication No.59-112567 JP 2004-1189 A

  In screw tightening, when using automobile wheels, work using manual tools has been the mainstream. During the period of high economic growth in Japan, the number of vehicles owned increased and the maintenance equipment also changed, and power devices using power instead of manual tools became mainstream. However, in recent years, there are some situations where the power plant is not necessarily accepted for the following reasons.

  This is because the material of the disc wheel constituting the automobile wheel has been changed from steel to light metal such as aluminum alloy and has been widely used in general vehicles. The instructions (1) to (3) below are included in the instruction manuals and notes for the light alloy disc wheel.

(1). Avoid tightening with an impact wrench as it may cause overtightening, scratches or deformation.
(2). Do not use impact wrench for final tightening of nuts and bolts. Over tightening may cause damage or deformation of bolts, nuts, or disc wheels.
(3). When using an impact wrench, temporarily tighten with a low torque, and then tighten with the recommended torque using a torque wrench.

  An impact wrench is a device that uses compressed air or electric power as a power source to perform screw tightening or loosening operations.The characteristics of high torque and high rotation are not all but can be adjusted. Tend to be used. As can be seen from the above explanation on handling, it is understood that tightening with an impact wrench is not necessarily a preferable method.

  Maintenance work is also required to follow this handling method. In addition, manual tools and manual devices have been reviewed because it is necessary to incorporate user requests for careful handling. However, even under such conditions, the operator is required to improve the manual work efficiency.

  In recent years, instead of steel disc wheels used for automobile wheels, those made of light metals such as aluminum alloys have been widely adopted from the standpoint of unsprung mass reduction and decorativeness. Except for some special manufacturing methods, the thickness of the cross-section is generally larger than that of steel because of strength.

  As shown in FIG. 1, the periphery of the mounting surface of the aluminum alloy disc wheel AW1 mounted by screw connection is joined to the vehicle-side hub flange F and tightened. Since this portion is manufactured with a particularly large thickness, the seat surface position S1 for tightening applied to the mounting holes of the nuts and bolts is often recessed from the surface of the disc wheel AW1 as shown. In the position.

  Further, as shown in FIG. 1, the periphery of the seating surface position S1 is different depending on the type, but forms a cylindrical hole. Many of the cylindrical holes are screwed by nuts or bolts. In the state where the wheel is mounted, there are many cases where the positional relationship between the surface (design surface) D of the disc wheel AW1 and the head of the nut N1 is as shown in (1) to (3) below. It was.

(1). The head of the nut N1 is substantially at the same position as the surface of the disc wheel AW1.
(2). The head of the nut N1 protrudes slightly from the surface of the disc wheel AW1.
(3). The head of the nut N1 is slightly recessed from the surface of the disc wheel AW1.

As shown in FIGS. 2, 3, and 4, light metal disk wheels AW1, AW2, and AW3 such as an aluminum alloy have the following (1) to (1) to the types of tightening seat surfaces to be tightened with nuts or bolts. There is something like 3).
(1). As shown in FIG. 2, what is called a bushless type that does not have a bush. As shown in FIG. 2, the bushless type screw tightening seat surface S <b> 1 is often formed by cutting a light metal constituting the disc wheel.
(2). As shown in FIG. 3, the screw tightening seat surface S <b> 2 is formed of a steel bush B and is called a bushed type.
(3). As shown in FIG. 4, a bushing is not provided, but a flat seat shape (a type in which tightening is performed using a nut N3 with a washer) in which the screw mounting seat surface S3 is smooth. The flat seat-shaped tightening seat surface S3 is often formed by cutting a light metal constituting the disc wheel AW3.

The following (1) and (2) are required for handling the screw tightening seating surface of the disc wheel or the like.
(1). As shown in Fig. 2, the bushless type seats carefully while firmly positioning the center of the disc wheel mounting hole and the center of the clip bolt CB when the nut N1 is seated on the tightening seat surface S1. If the work is not performed, the seat will tend to collapse. The reason is that the fastening seat surface S1 is made of light metal.
(2). As shown in FIG. 4, the flat seat shape has a structure in which a part of the flat seat nut N3 forms a sleeve portion NSL and engages with a cylindrical hole WSL on the disk wheel AW3 side. In this structure, the clearance (clearance) between the sleeve portion NSL and the cylindrical hole WSL is very small. Therefore, in the case of tightening with the wheel mass applied to the clip bolt CB or the sleeve portion NSL or high torque tightening using a power tightening device, the thread of the clip bolt CB tends to be damaged. Therefore, it is necessary to carefully seat on the fastening seat surface S3 so that the sleeve portion NSL is normally inserted into the cylindrical hole WSL.

  Here, the sleeve portion NSL means a relatively elongated cylindrical part that is used by being fitted to the outer periphery of a shaft, for example. Moreover, when the mass of the wheel for motor vehicles is generally used for the use for riding, it is about 15-25 kg in the state which combined the disc wheel and the tire.

Therefore, in the field where repair and maintenance work is performed on these structures, the following contents (1) to (4) are desired in order to perform maintenance with an appropriate tightening torque.
(1). Uniform temporary fastening is required from the stage of the temporary fastening step, which is a preliminary preparation for the final fastening step.
(2). It is necessary to prevent the tightening seat surface from collapsing.
(3). It is necessary not to damage the nut and bolt threads.
(4). Care must be taken to prevent work damage around the tightening seat surface.

Therefore, in the case of a light metal disc wheel, manual installation has been generalized with the refrain from using a power fastening device in the fastening process. However, work performed using a conventional manual tool or manual device has the following problems (1) to (4).
(1). It takes a long time to work and is inefficient.
(2). In continuous work, there is a lot of burden on the wrist and fatigue of the operator.
(3). For manual tools that use both hands, it is difficult to work while supporting the wheel.
(4). In the case of a manual tool that can be operated with one hand, it is possible to work while supporting the wheel, but because the rotation angle that can be moved by one wrist movement is limited, it is recommended to use screws Spending time.

  In view of these circumstances, there has been a demand for an efficient method or tightening device that is manually tightened using low torque and has a low work burden on the operator. Therefore, when considering the conventional screw tightening manual tools and manual devices and the details of the work performed by workers, most of them focus on the final process of temporary tightening and final tightening, and functionality is also included in that process. In particular, there were many things that provided convenience. For this reason, the processes prior to temporary fastening and final fastening are not always easy to use. On the other hand, there are also manual tools and manual devices that are good at other partial processes, but none of them is easy to use in multiple processes.

  In addition, although human power is limited and varies from person to person, in general, human arms, wrists, and fingers can apply a certain amount of torque to a screw. Further, if a tool having a radial distance from the tightening shaft is used, the tightening torque can be increased. However, it is impossible to obtain a large number of rotations while holding the nut or bolt directly with your hand because of the structure of the human body. The number of rotations that can be moved at one time is less than one rotation, and it is often an angle. About 270 degrees (3π / 2 radians) is the limit.

  There are exceptions. When the nuts or bolts have a smooth thread pitch, and the gripped hand is released halfway, it is possible to turn it one or more times by the following method. It is a conventional method, but when a finger or a part of the hand is placed on the outer peripheral surface of the nut or bolt, a force is applied in the tightening direction, a force is applied, and when the hand is released, a certain amount of screw feed is performed. Is possible.

  However, the above method is limited by the shape of the disc wheel, and it is impossible for all to carry out this method. For example, what is shown in FIG. 5 is a shape often used for a steel disc wheel constituting an automobile wheel. With this shape and the like, the above method is possible because there is a wide space (work space) where hands and fingers are placed around the nut N2 and the clip bolt CB that are tightened from the outer surface of the disc wheel SW.

Normally, the work flow for tightening bolts and nuts is performed according to the following procedure.
・ The stage to engage the screw thread normally.
-The stage of screw feeding while checking whether there is any abnormality in the screw pitch of the bolt and nut.
-The stage where the screw is normally seated against the mounting surface.
-A stage where the tightening torque is gradually increased to temporarily tighten.

However, it has been difficult to efficiently perform the above-described work flow in a chain using one type of manual tool and manual device (including auxiliary devices). Therefore, in general, it has been the mainstream to reduce the time somewhat while devising the method as described in (1) and (2) below.
(1). A method that uses a finger and wrist to turn the screw feed process or the seating process directly with a nut or bolt, and then tightens it with tools and equipment.
(2). A method of using multiple tools and devices according to each process and proceeding with the work.

  However, the method (1) has a problem that the screw feeding process is a very laborious work, and when the number of tightening is large, the burden on the fingertip and wrist is large. Further, the method (2) has the inconvenience that it is necessary to carry a plurality of tools and devices each time the fastening part is moved. Manual tightening has the advantage of a low torque and a reliable method that allows you to feel the screw condition with your hands and fingertips and not worry about damaging the screw. It is becoming expensive because it is expensive. On the other hand, there is a problem that the working time becomes long and the working efficiency is low, and improvement has been desired.

  The present invention has been made in view of the above-described points, solves the conventional problems, converts the rotational force applied to the rotating spindle to inertial force while taking advantage of the low torque that is a manual characteristic, Using inertial force, take out the rotation with a large number of rotations from the output side, and feed the screw (when rotating the nut to the fixed bolt and feeding it, or by rotating the bolt into the screw hole provided in the fixed nut or flange etc. It is an object of the present invention to provide a single-shaft manual fastening device capable of carrying out a

  In order to solve the above-mentioned problems, the invention described in claim 1 includes a ring-shaped body, a ratchet gear including a ratchet gear inner peripheral member and a ratchet gear outer peripheral member, and a rotation support shaft, and is formed on one side surface of the ring-shaped body. The flange portion of the ratchet gear outer peripheral member of the ratchet gear is fixed to the recess, and one side of the joint is fixed to the position passing through the central axis of the annular body from the vicinity of the outer periphery of the opposite side surface of the annular body, and the opposite side surface of the joint Providing a rotational force output portion at a position on the center axis extension of the ring-shaped body, fixing the ratchet gear inner peripheral member of the ratchet gear to the outer periphery of the rotational support shaft, and applying the rotational force to the rotational support shaft Thus, the rotational force output portion is driven to rotate through the ratchet gear, the ring-shaped body, and the joint, and the inertial force of the mass body including the ring-shaped body and the joint disappears. Until, characterized by being configured for rotationally driving the rotational force output unit.

  According to a second aspect of the present invention, in the single-axis manual clamping device according to the first aspect, a plurality of multipurpose members are fixed radially on the outer peripheral surface of the ring-shaped body, and the multipurpose members are The rotational force output unit is rotationally driven through the ring-shaped body and the joint.

  A third aspect of the present invention is the single-shaft manual fastening device according to the first or second aspect, wherein the ratchet gear is configured to transmit a rotational force only in one direction, and the ratchet gear inner periphery of the ratchet gear It is characterized in that the transmission direction can be selected clockwise or counterclockwise depending on the fixing direction of the member and the outer peripheral portion of the rotating spindle.

  According to a fourth aspect of the present invention, in the single-shaft manual tightening device according to any one of the first to third aspects of the present invention, the rotation support shaft is formed in a gap formed by the ring-shaped body and the ratchet gear. It is equipped with a protective cover to prevent entrainment, a center axis handle, a center axis large handle, and a center axis small handle, and a cavity inside and near the center of the rotation support shaft, at the end of the center axis small handle And a socket insertion portion.

  According to a fifth aspect of the present invention, in the single-axis manual tightening device according to any one of the first to fourth aspects, the multi-purpose member can fix a weight at an end in a radial direction thereof. Thus, an auxiliary tool can be attached to the end of the weight in the same radial direction.

  A sixth aspect of the present invention is the single-shaft manual tightening device according to any one of the first to fifth aspects, comprising the rotary support shaft, the ratchet gear, the ring-shaped body, and the multipurpose member. The distance of the radius of rotation is as small as possible within a range with sufficient inertial mass to rotate the screw.

  A seventh aspect of the present invention is the single-shaft manual fastening device according to any one of the first to sixth aspects, wherein a large number of steels are provided between the ratchet gear inner peripheral member and the ratchet gear outer peripheral member of the ratchet gear. A ball bearing provided with a ball is interposed.

  According to the first aspect of the present invention, the flange portion of the ratchet gear outer peripheral member of the ratchet gear is fixed to the concave portion formed on the one side surface of the ring-shaped body, and the center axis of the ring-shaped body from the vicinity of the outer periphery of the opposite side surface of the ring-shaped body. One side of the joint is fixed at a position passing through the joint, and a rotational force output portion is provided on the opposite side of the joint on the extension of the center axis of the ring-shaped body, and the ratchet gear inner peripheral member of the ratchet gear is arranged on the outer periphery of the rotation support shaft. By fixing and applying a rotational force to the rotation support shaft, the rotational force output unit is driven to rotate through the ratchet gear, the ring-shaped body, and the joint, and the inertial force of the mass body including the ring-shaped body and the joint is Since the rotational force output unit is driven to rotate until it disappears, the rotational force manually applied to the rotating spindle is converted into inertial force such as a ring-shaped body or a joint, and the rotational output is output until the inertial force disappears. Rotate many times From, by utilizing the rotation of the rotation output section to the screw feed of the bolts and nuts, it is possible to shorten the time of screw tightening operation manual. In addition, since it has a ratchet gear, it has a smooth slip, and the rotational force is manually input, so no noise or vibration is generated from the work place.

  According to the second aspect of the present invention, a plurality of multipurpose members are fixed radially on the outer peripheral surface of the ring-shaped body, and the rotational force output portion is rotated by the multipurpose member via the ring-shaped body and the joint. Since it can be driven, the operation from the screw feeding process to the seating process can be executed in a short time by an operation with only one hand.

  According to the third aspect of the present invention, the ratchet gear is configured to transmit the rotational force only in one direction, and the transmission direction is determined by the fixing direction of the ratchet gear inner peripheral member of the ratchet gear and the outer peripheral portion of the rotation support shaft. Since the structure can be selected clockwise or counterclockwise, in the case of work in which the tightening direction is constant, there is no problem such as the operator getting lost in the tightening direction, and work efficiency can be improved. Further, since the ratchet gear configured to transmit the rotational force only in one direction is used, the entire apparatus can be reduced in weight. Furthermore, since it can be reassembled for the normal screw and the reverse screw, it can cope with a change in the production line and the like, which helps to reduce the cost. Further, in the automobile repair work, it is possible to change the tightening direction because it corresponds to a special vehicle in which the right wheel is a right screw and the left wheel is a left screw.

  According to the invention described in claim 4, since the rotation support shaft is provided with the protective cover for preventing the entanglement in the gap formed by the ring-shaped body and the ratchet gear, Injuries can be prevented. Further, by providing the center axis handle, it is possible to prevent slipping by making it easy to grip with a hand and not slipping when inputting. Furthermore, it is possible to selectively use the three locations of the center axis handle, the center axis large handle, and the center axis small handle depending on the work situation. In addition, by providing a socket insertion part at the end of the small handle of the central shaft, an auxiliary device for reverse rotation can be connected if necessary, and various tools including a socket insertion part can be connected. It can be used in connection with this apparatus.

  According to the invention described in claim 5, since the multipurpose member can fix the weight to the end portion in the radial direction, the inertial mass can be adjusted, and the individual difference of the operator and the work Selection and adjustment can be made according to the content. Since it is possible to attach an auxiliary tool to the end of the weight in the same radial direction, when temporarily tightening, from the meshing process of the screw to the process of seating on the seat surface, the radius is efficiently used for work. It is possible to increase the radius of rotation in order to obtain the necessary torque in the temporary fastening process.

  According to the sixth aspect of the present invention, the distance of the rotation radius formed by the rotation support shaft, the ratchet gear, the ring-shaped body, and the multipurpose member can be within a range having sufficient inertial mass to rotate the screw. Since it is made as small as possible, there is an effect that the burden on the wrist of the operator can be reduced by shortening the rotation radius from the rotation center axis from the initial stage to the middle stage of tightening. In addition, the rotating radius portion that is rotating at the time of work comes into contact with the worker, so that it is effective in preventing injury during the work, and work time and productivity can be improved.

  According to the seventh aspect of the invention, since the ball bearing having a large number of steel balls is interposed between the ratchet gear inner peripheral member and the ratchet gear outer peripheral member of the ratchet gear, the ratchet gear outer peripheral member, the ring-shaped member, etc. The mass body slides smoothly and no noise or vibration occurs.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
6 to 12 are views showing a configuration of a single-shaft manual tightening device as a screw tightening manual device according to the first embodiment of the present invention, and FIG. 6 is a cross-sectional view of the single-shaft manual tightening device. 7 is a front view taken along the line AA in FIG. 6, FIG. 8 is a cross-sectional view taken along the line BB in FIG. 6, FIG. 9 is a cross-sectional view taken along the line C-C in FIG. 11 is a cross-sectional view taken along the line DD, FIG. 11 is a rear view taken along the line EE of FIG. 6, and FIG. 12 is an exploded perspective view of the single-axis manual fastening device. As shown in the figure, the single-shaft manual fastening device M includes a ring-shaped body 1, a ratchet gear 3 including a ratchet gear inner peripheral member 31 and a ratchet gear outer peripheral member 32, and a rotation support shaft 4.

  A concave portion is formed on one side surface of the ring-shaped body 1, and a flange portion of the ratchet gear outer peripheral member 32 of the ratchet gear 3 is fixed to the concave portion with a bolt 6. One end of the joint 5 is fixed by welding or the like at a position passing through the central axis of the annular body 1 from the vicinity of the outer periphery of the opposite side surface of the annular body 1, and the central axis of the annular body 1 is extended to the opposite side surface of the joint 5. The socket insertion part 2 used as a rotation output part is provided in the position. The ratchet gear inner peripheral member 31 of the ratchet gear 3 is fixed to the outer periphery of the rotation support shaft 4. Here, the coupling between the ratchet gear inner peripheral member 31 and the rotary support shaft 4 is screwed, and the ratchet gear inner peripheral member 31 is fastened and fixed by a ring nut 41. When a rotational force is applied to the rotation support shaft 4, the ring-shaped body 1 and the joint 5 are rotated via the ratchet gear 3 to generate an inertial force. This rotation continues until the inertial force disappears due to the frictional resistance, and drives the socket insertion portion 2 to rotate. Further, multipurpose members 7 used for various purposes are radially attached and fixed on the outer peripheral surface of the ring-shaped body 1.

  The ring-shaped body 1 has a function as an inertial mass and transmits the rotational force (input torque) applied to the rotary support shaft 4 to the socket insertion portion 2 via the joint 5. The socket insertion portion 2 is for inserting and fixing an end portion of a screwdriver socket SKI for rotating the nut N1. The ratchet gear 3 transmits a rotational force (input torque) applied to the rotation support shaft 4 and is generated in a mass body including a ring-shaped body 1 including the ratchet gear outer peripheral member 32, a multipurpose member 7, and a joint 5. This is to make the inertial force to act effectively and make the rotational force input system two systems. The rotation support shaft 4 functions as a support shaft that supports the center of rotation and an input shaft that inputs rotational force. The joint 5 has an effect of transmitting a rotational force from the ring-shaped body 1 to the socket insertion portion 2. The multipurpose member 7 has a role as an inertial mass, a role for connecting a weight 8 for adding the inertial mass, a role of an input position for inputting a rotational force to the ring-shaped body 1 from the radial direction, and an auxiliary tool 9 via the weight 8. Has a role to connect.

As described above, the ratchet gear 3 includes the ratchet gear outer peripheral member 32 and the ratchet gear inner peripheral member 31, and includes the following functions and components.
-Transmits force in one direction (clockwise or counterclockwise) on one side and does not transmit force in the opposite direction, and has particularly smooth sliding characteristics.
The inner peripheral surface of the ratchet gear outer peripheral member 32 includes a plurality of teeth that have a predetermined radius of rotation and that engage with the ratchet gear pawl 12 (see FIG. 9).
A ball bearing 11 made of a number of steel balls in order to reduce the frictional resistance in the circumferential direction at both ends between the inner peripheral surface of the ratchet gear outer peripheral member 32 and the outer peripheral surface of the ratchet gear inner peripheral member 31 (see FIG. 8) It has.

  By providing the ratchet gear 3 having the above-mentioned functions and components between the ring-shaped body 1 and the rotation support shaft 4, it has a smooth slip at the time of revolution and appropriately applies a rotational force to the socket insertion portion 2 at the time of driving. Can communicate. A one-way clutch or the like may be used instead of the ratchet gear 3.

  In the single-shaft manual fastening device M, the ratchet gear 3 has the ratchet gear outer peripheral member 32 as the output side and the ratchet gear inner peripheral member 31 as the input side, but conversely, the ratchet gear outer peripheral member 32 is used. The input side and ratchet gear inner peripheral member 31 may be the output side. However, in order to reduce the size and weight of the entire apparatus, it is preferable that the ratchet gear outer peripheral member 32 is on the output side as shown in the figure.

  Further, as shown in FIG. 6, the rotary support shaft 4 is located at a cylindrical center axis handle 4A, a center axis large handle 4B formed at an end thereof, and a center portion of the center axis large handle 4B. It consists of a small central shaft handle 4C formed at the end of the central shaft handle 4A. The rotational support shaft 4 may have a circular or polygonal cross-sectional shape. Further, the vicinity of the central axis may be hollow or may be a bar-like peel.

  A protective cover 42 is provided on the outer periphery of the central shaft handle 4A of the rotary spindle 4, and the protective cover 42 is used to prevent an operator's finger or hand from getting caught in the rotating part during operation. It is. As for the material and shape, it is required that the operator supports the rotating support shaft 4 with his hand and the fingertip is arranged close to the rotating portion, so that it is lightweight and secures safety during work. Therefore, it is preferable to use a shape made of resin or the like that does not have complicated protrusions. In addition, as shown in FIG. 12, here, a plurality of (two in the figure) divided parts are used for attachment and fixing to the rotation support shaft 4, and the rotation support shaft 4 is sandwiched and fixed by the components. However, it is not limited to this, and may be fixed as one part.

  The ring-shaped body 1 has a circular front shape as shown in FIG. 7, but may be a polygon. Further, the cross section has a shape in which a concave portion is formed on one side as shown in the figure, but various shapes other than this shape are conceivable. The ring-shaped body 1 is preferably symmetric with respect to the rotation center axis. Moreover, since it also plays a role as an inertial mass, it is preferably made of metal, a steel having a large density and sufficient strength.

  The socket insertion portion 2 may have a structure in which screwdriver sockets of various sizes are engaged so as to be exchangeable according to the work content. In this case, it is preferable that the engaging method be a structure that can be securely held without being easily detached during the operation, and can be easily detached or attached at the time of replacement or mounting. For example, it is preferable to provide an anti-disengagement joint portion 13 or the like, such as a screwdriver socket SK1 or SK2 as shown in FIG.

  Furthermore, it is preferable that the multipurpose member 7 is fixed in the radial direction on the outer peripheral surface of the ring-shaped body 1, and the number thereof is two to eight (four in the figure). Moreover, it is preferable to arrange | position on the outer peripheral surface of the annular body 1 at equal intervals considering the balance of mass. Furthermore, it is good also as a structure which an inertial mass member etc. can engage in the radial direction.

  Further, the joint 5 needs to be strong enough to transmit the inertial force or torque of the ring-shaped body 1 to the socket insertion portion 2 on the rotation center shaft. Therefore, in the vicinity of the rotation center axis where the inertial force is small, the mass of the entire apparatus is simply increased. Therefore, it is preferable to have a shape in which unnecessary portions are removed to a minimum while ensuring strength. Furthermore, in the vicinity of fixing to the ring-shaped body 1 on the radius from the rotation center axis, a part of the joint 5 also has an inertial force. Therefore, the shape of the joint 5 can be changed in design other than the shapes shown in FIGS. For example, the number of legs of the joint 5 for fixing the ring-shaped body 1 and the socket insertion portion 2 may be one to a plurality covering the front surface.

Furthermore, when the joint 5 is tightened with a bolt or nut having a distance longer than the distance in the direction of the rotation center axis of the screwdriver socket to be inserted into the socket insertion portion 2 using the single-axis manual tightening device M, By changing the design of the shape of the insertion portion of the screwdriver socket SK1, the socket insertion portion 2, the joint 5, and the small central axis handle 4C of the rotary support shaft 4, the following operations can be performed.
・ The work of tightening by feeding a through nut to a long bolt.
-The work of tightening by feeding a long bolt with a convex part for tightening other than both ends to the foundation.

When performing the above operation, the shape of the joint 5 may be as follows, for example.
A space may be provided in the vicinity of the center of rotation, and a joint may be formed from the vicinity of the outer periphery of the ring-shaped body 1 or a part thereof in an annular or polygonal ring so as to surround the space.
-Except for the space near the rotation center, all other parts may be covered and fixed to the vicinity of the outer periphery of the ring-shaped body 1 or a part thereof. In consideration of the total mass of the entire apparatus, lubrication maintenance to the ratchet gear 3 at the center of the apparatus, a plurality of round holes or the like may be provided.

  Further, the weight 8 is provided with a thread groove 8B at one end so as to be able to be combined with the multipurpose member 7 by screw connection for adjusting the inertial mass as shown in FIGS. 13 (A) and 13 (B). . Further, the other end is a gripping portion 8A that is gripped by hand as shown in FIG. 13A, or a polygonal cross section (hexagonal in the figure) so that the auxiliary tool 9 as shown in FIG. 14 can be coupled. . Further, when performing temporary fastening using the single-axis manual fastening device M, a cylindrical auxiliary tool 9 as shown in FIGS. 14A, 14B, and 14C is used. It is good also as a structure which can be engaged with the composite body of the multipurpose member 7 or the multipurpose member 7 and the weight 8. FIG. 14A is a view showing a side surface and a cross-sectional configuration of the auxiliary tool 9, FIG. 14B is a cross-sectional view taken along the line aa, and FIG. 14C is a cross-sectional view taken along the line bb. As shown in the figure, the auxiliary tool 9 has a multi-purpose member 7 whose inner periphery is formed in a hexagonal shape, or a connecting portion 9A that is connected to a weight 8, and a grip portion 9B that is formed on the outer periphery of the other end. .

  In addition, the central shaft handle 4A and the large central shaft handle 4B of the rotation support shaft 4 are easy to grasp by hand and are not slippery for the purpose of inputting rotational force necessary for rotation and the purpose of supporting as a fulcrum. Is required. Therefore, the surface of the grip portion may be provided with surface treatment or irregular unevenness for preventing gripping and slipping, and the cylindrical shape of the grip portion may be an ellipse or a polygon instead of a circle. .

  Further, a space formed in the vicinity of the small central axis handle 4C, that is, a gap between the inner peripheral surface of the large central axis handle 4B and the outer peripheral surface of the small central axis handle 4C, inserts the fingertip and holds the small central axis handle 4C. It is a space for. It is possible to change the input position to the small central axis handle 4C during the rotational force input from the central axis handle 4A or the large central axis handle 4B of the rotation support shaft 4. This requires an input torque that is slightly larger than the input torque from the center shaft handle 4A, but the input side may obtain an inertial force and the input torque may be even smaller during rotation. When the method is performed, the output side, that is, the socket insertion portion 2 can be rotated at a higher rotational speed.

  In the operation procedure, first, rotational force (rotational torque) is input from the central shaft handle 4A or the large central shaft handle 4B, and the ring-shaped body 1 and the multipurpose member 7 which are inertial masses are rotated. Thereafter, the central shaft small handle 4C is grasped with a plurality of fingers at an appropriate stage according to the method of use, and a rotational force (rotational torque) is applied. Thus, while the ring-shaped body 1 and the multipurpose member 7 are rotated by the inertial force, the rotation can be continued with a small rotational force input. In addition, it is effective to apply a rotational force so that the input is added in small increments so that the rotation does not stop, because a large rotation angle on the output side can be provided only by the operation of the fingertip.

  Furthermore, an auxiliary device for reverse rotation and the like can be connected to the socket insertion portion 4D as necessary. Moreover, it can utilize, when connecting and using the various tools provided with socket insertion part 4D with this single axis | shaft manual clamping apparatus M.

  Here, the configuration of the single-shaft manual fastening device M will be described in detail with the transmission of rotational force. When a rotational force is applied to the rotational shaft while the rotational support shaft 4 is supported by one hand, the rotational force is transmitted to the socket insertion portion 2 via the ratchet gear 3, the ring-shaped body 1, and the joint 5. The In this case, the ratchet gear inner peripheral member 31 which is a constituent member of the ratchet gear 3 transmits the rotational force to the ratchet gear outer peripheral member 32 in the tightening direction by the gear, and when the transmission of the rotational force is finished, the ratchet effect The ratchet gear outer peripheral member 32 is in a revolving state with respect to the ratchet gear inner peripheral member 31. Then, with the rotation support shaft 4 supported by one hand, the rotation is continued until the inertial force disappears due to the frictional resistance (until the rotational kinetic energy disappears due to the frictional resistance).

  Therefore, by inputting rotational force to the input side, the output side can be rotated at an appropriate number of rotations, and screw feeding work with low torque (rotation feeding work of nuts) taking account of screw threads can be performed with only one hand. Can be done. Further, when a rotational force is input from the multipurpose member 7 fixed to the ring-shaped body 1 or a combination of the multipurpose member 7 and the weight 8, the rotational force is applied to the ring-shaped body 1. It is transmitted to the socket insertion portion 2 via the joint 5. The rotation continues until the inertial force disappears due to the frictional resistance.

  In this case, the flange portion of the ratchet gear outer peripheral member 32 of the ratchet gear 3 is fixed to the ring-shaped body 1, and the rotary support shaft 4 is fixed to the ratchet gear inner peripheral member 31, and supports the rotary support shaft 4. As long as the ratchet gear outer circumferential member 32 constituting the ratchet gear 3 revolves in the screw tightening direction with respect to the ratchet gear inner circumferential member 31 due to the ratchet effect, and the rotary support shaft 4 acts as a work fulcrum. . Therefore, by inputting the rotational force as described above, a large inertial force can be obtained, and a sufficient number of revolutions required for screw feeding can be obtained on the output side.

  As for the timing at which the ratchet gear 3 transmits the rotational force, when the rotational force is applied to the rotation support shaft 4, the ratchet gear inner peripheral member 31 of the ratchet gear 3 is input and the ratchet gear outer peripheral member 32 is output. On the side. When the relative angular velocity of the ratchet gear outer peripheral member 32 with respect to the ratchet gear inner peripheral member 31 becomes 0 (rad / sec), the rotational force is transmitted. Therefore, when the relative angular velocity is greater than 0 (rad / sec), a revolution state is established.

  Thereafter, the ratchet gear outer circumferential member 32 continues to rotate until the inertial force acting on the ratchet gear outer circumferential member 32 disappears due to the frictional resistance (until the rotational kinetic energy due to the inertial force disappears due to the frictional resistance). When the rotational force is input again when the inertial force has decreased to some extent, driving is performed when the angular velocity of the rotating support shaft 4, that is, the angular velocity of the inner ratchet gear member 31 catches up with the angular velocity of the outer ratchet gear member 32 ( Rotational force is transmitted to the ratchet gear outer peripheral member 32.

  Further, when a rotational force is applied to the rotation support shaft 4 so that the angular velocity is higher than that, that is, the ratchet gear outer peripheral member 32 and the ratchet gear outer peripheral member 32 and the ratchet gear outer peripheral member 32 for a short time when the relative angular velocity of the ratchet gear outer peripheral member 32 becomes zero. The ratchet gear inner circumferential member 31 rotates at the same speed. After that, the ratchet gear outer peripheral member 32 is in a revolving state due to the maintenance of a certain angular velocity due to the inertial force and the deceleration accompanying the decrease in the rotational force of the ratchet gear inner peripheral member 31, and the rotational movement related to the screw tightening is performed. The rotational force is transmitted for a certain period of time while being gradually decreased by the frictional resistance.

  Below, when attaching the wheel for motor vehicles to a vehicle body using this single axis | shaft manual fastening apparatus M which concerns on 1st Embodiment, an example of the work process which concerns on screw fastening is demonstrated in detail. In the case of an automobile mainly for passenger use, that is, a structure in which a wheel for an automobile in which a tire and a disc wheel are combined is attached to a hub flange, roughly divided into the following two types (1) and (2). Exists.

  (1). As shown in FIG. 2, one type is a clip bolt CB that is pre-installed on the vehicle-side flange surface F, and passes through a hole having a mounting seat surface S1 for tightening that is opened near the center of the disc wheel AW1. The wheel is fixed from the outside with a nut N1. Many of these types are well-known in Japanese cars. The number of holes provided in the wheel mounting seat surface S1 and the number of bolts and nuts related to tightening are generally plural, and may be one when used for special purposes.

  (2). In the other type, a screw fastening hole is made in the hub flange of the vehicle, and a female screw is made. This is a type in which a wheel is assigned to the hole, and after aligning with a hole having a mounting seating surface for tightening provided near the center of the disc wheel, the wheel is fixed with a bolt from the outside, which is often seen in European cars. . As with the above types, the number of holes in the mounting seat surface of the wheel and the number of bolts for tightening and the number of female screw holes opened in the hub flange are generally plural, and when used for special purposes, Sometimes it is one.

Here, a description will be given using passenger cars manufactured and sold mainly in Japan, that is, the type described in the above (1). First, the socket insertion part 2 of the single-shaft manual clamping device M has a screwdriver that matches the shape and dimensions of the outer peripheral surface of the nut to be tightened (for example, the width across flats of the nut in the case of a hex nut). Select the socket for insertion. Subsequently, the nuts are prepared for tightening by any of the following procedures.
-Insert the nut N1 in advance into the screwdriver socket SK1.
-The screw thread of the nut N1 is normally meshed with the clip bolt CB planted on the vehicle side flange F and temporarily fixed.

  Subsequently, the vicinity of the center shaft handle 4A of the rotating spindle 4 of the single-shaft manual clamping device M is grasped with one hand, and the center of the tip of the screwdriver socket SK1 inserted in the single-shaft manual clamping device M in advance is held. Align the part with the center of the tip of the clip bolt CB. If necessary, the other hand supports the vicinity of the outer periphery of the wheel, and the disc wheel mounting surface WF is aligned with the vehicle side flange surface F. At this time, surface alignment and alignment are performed firmly.

  Subsequently, the rotation support shaft 4 is rotated so as to be slowly twisted by the wrist in the tightening direction (in this case, a right-hand screw is assumed, which is the clockwise direction). Then, the screw-turning socket SK1 on the output side rotates with the movement of the rotation support shaft 4. Thereafter, the input side is stationary, but the output side continues to rotate for a while. This is due to the inertial force acting on the inertial mass of the ratchet gear 3 and the ring-shaped body 1 that operate smoothly. As a result, rotation with a larger rotation angle is obtained on the output side than the rotation angle applied to the rotation support shaft 4, and several threads can be fed here.

  In the above process, it is possible to determine whether or not the initial meshing of the threads is smoothly performed by using the low torque and low rotation state. In addition, it is possible to easily confirm whether or not there is any abnormality in the screw thread by feeling the hand gripping the rotary spindle 4.

Subsequently, from the state where the screws are engaged normally and smoothly, the rotational force is input by one of the following procedures, and the screw feeding process is performed.
A method of gradually increasing the operation of inputting the rotational force by twisting the rotating support shaft 4 with the wrist.
A method of inputting the rotational force in small increments so that the angular acceleration is applied by reducing the twisting angle of the operation of inputting the rotational force so that the rotational support shaft 4 is twisted with the wrist.
By these methods, the screw feeding process can be performed efficiently.

  There is also a procedure for smoother rotation during the screw feeding process. It obtains a certain amount of inertial force and inputs the rotational force by grasping the small handle 4C of the central shaft of the rotation support shaft 4 with the fingertip while the output side is rotating. That is, when a rotational force is input using a portion having a small shaft radius of the rotation support shaft 4, the rotation angle input at one time is increased, and the output side rotation angle is increased accordingly. Therefore, it is easy to increase the rotation speed on the output side. The mechanism for changing the rotational speed in the usage state of the single-shaft manual tightening device M is to adjust the force for inputting the rotational force of the operator (addition or subtraction of the rotational force applied to the rotational support shaft 4), the center provided on the rotational support shaft 4 The shaft radius is changed depending on the position of the shaft handle 4A.

  Subsequently, in the step of seating the nut N1 on the fastening seat surface S1 of the disc wheel AW1 from the screw feeding step, the other hand as described above supports the vicinity of the outer periphery of the wheel, and the vehicle side flange surface F and the disc wheel are attached. This is performed by inputting rotational force from any of the central axis handle 4A, the large central axis handle 4B, and the small central axis handle 4C of the rotation support shaft 4 while performing surface alignment and alignment with the surface WF. Accordingly, the nut N1 can be seated at an appropriate position on the tightening seat surface S1. In this case, the hand for screw tightening can be performed with only one hand, and the other hand can be dedicated to surface alignment and positioning of the wheels. That is, it is possible to perform operations from screw feeding to seating of the nut with the other hand while maintaining the state of wheel surface alignment and position alignment with one hand.

  Normally, as shown above, there are often a plurality of nuts and bolts for tightening. Therefore, first, about half of the plurality of screws are repeatedly performed by the above method until they are lightly seated. Then, after the surface alignment and positioning of the disc wheel AW1 are almost completed, the rotation support shaft 4 is gradually twisted from the point where the screws are normally engaged as described above for the remaining screws. To enter the rotational force in large or small increments. Here, it is possible to shift to work using both hands.

  The procedure is to stop the rotational operation of the rotary support shaft 4 supported from the previous stage and support it as a fixed shaft, preferably supporting the vicinity of the central shaft handle 4A as it is, and using the other hand 7 or the multipurpose member with the other hand. A rotational force is inputted in the clockwise direction from the combination of the member 7 and the weight 8. That is, a rotational force is manually applied directly to the inertial mass portion such as the ring-shaped body 1.

  Thereby, the output side rotational force larger than the previous stage can be obtained, and the work efficiency from the screw feeding process to the seating process can be improved. Here, although the rotational speed is increased, since a reliable method is used for the screw, there is an advantage that it is difficult to cause an operational error that damages the screw thread. The remaining nut is seated in the same manner.

  Subsequently, the following steps are performed as necessary, but in the case of automobile wheels, the mounting surface to be screwed in particular is perpendicular to the ground, and is affected at least by the influence of gravity. At the time of tightening, the mounting seat surface S1 of the disc wheel AW1, which is a body to be tightened, is displaced from the bolts and nuts for mounting. Therefore, it is preferable to carry out the following steps.

  When the steps until all the nuts are lightly seated are completed, the tip of the screwdriver socket SK1 inserted in the single-shaft manual clamping device M is again applied to the nut N1 (inserting the nut), While holding the center shaft handle 4A of the rotating support shaft 4 with one hand and supporting the vicinity of the outer periphery of the wheel with the other hand, confirming and finely adjusting the position of the disc wheel mounting surface on the hub flange surface, the center shaft large handle 4B The preparatory stage before the temporary tightening is completed by tightening a plurality of nuts with the same force in order by a method such as diagonal tightening so that a certain amount of force is applied and slowly twisted. In addition, there is a method in which the hand for tightening is gripped so that the vicinity of the outer peripheral portion of the ring-shaped body 1 is wrapped by the entire palm and tightened.

Subsequently, temporary fastening, which is the final process using the single-axis manual fastening device M, is performed. As a method, as shown in FIG. 14, the multi-purpose member 7 constituting the single-shaft manual tightening device M or the combination of the multi-purpose member 7 and the weight 8 so as to obtain an appropriate tightening torque even with a small force is shown in FIG. The auxiliary tool connecting portion 9A of the auxiliary tool 9 is connected to extend the distance from the tightening central axis to the input position long. And the auxiliary tool grip part 9B of the auxiliary tool 9 is grasped with the hand which concerns on fastening, and temporary fastening is performed.

On the other hand, since a torsional moment is applied to the central axis, as the fulcrum of the central axis, the vicinity of the central axis handle 4A of the rotary supporting axis 4 is held and supported by the other hand, and a force is slowly applied to the auxiliary tool grip 9B. Then, a plurality of nuts are tightened uniformly to an appropriate tightening torque in order by a method such as diagonal tightening, and the temporary tightening process is completed. In addition, when performing this temporary fastening, it is preferable to carry out by tightening a plurality of nuts several times and gradually increasing the fastening torque.

  The work using the single-shaft manual fastening device M is the final process after the temporary fastening process. In the subsequent process, a final fastening process in which torque is controlled using a measuring instrument (such as a torque wrench) is performed. Is called. Thereafter, a completion inspection is performed, and the screw tightening operation is completed. In addition, during each step of the screw tightening operation described above, it is preferable to proceed with the work by performing an intermediate inspection or a complete inspection according to the work content or the like as necessary or according to the agreement.

A conventional cross wrench (cross wrench) is used to perform the same work process as described above by performing a screw tightening operation related to the mounting of a vehicle wheel using the single-shaft manual tightening device M. Compared with the method, individual differences must be taken into account to some extent, but it can be performed in about half of the time, the operator's feeling of fatigue can be reduced, and work efficiency is greatly improved.

In this single-shaft manual tightening device M, the bolt 6 that fixes the flange portion of the ratchet gear outer peripheral member 32 of the ratchet gear 3 to the ring-shaped body 1 is removed, and the assembly of the ratchet gear 3 and the rotary support shaft 4 is ring-shaped body. 1, and further remove the ring-shaped nut 41 and the ratchet gear 3, reverse the ratchet gear 3, attach it to the rotation support shaft 4 again, and fasten and fix it with the ring-shaped nut 41. The ratchet gear 3 and the rotation support shaft 4 are Similarly, by fixing the flange portion of the ratchet gear outer peripheral member 32 to the ring-shaped body 1 with the bolt 6, the mass body (output side) including the ring-shaped body 1 including the ratchet gear outer peripheral member 32 is moved in the opposite direction to the front. Can be changed to rotate.

[Second Embodiment]
FIG. 16 is an exploded perspective view showing a configuration example of the main parts (ring-shaped body part, ratchet gear part, rotating support shaft part) of the single-shaft manual fastening device M according to the present invention. As shown in FIG. 16, a portion in which the rotary support shaft 4 engages with the ratchet gear inner peripheral member 31 of the ratchet gear 3 is formed in the square columnar portion 4 a, and the inner peripheral portion of the central portion of the corresponding ratchet gear inner peripheral member 31 is formed. The portion is formed in a square hole portion 31a into which the quadrangular columnar portion 4a can be inserted. The rectangular columnar portion 4 a of the rotating support shaft 4 is inserted into the rectangular hole portion 31 a of the ratchet gear inner peripheral member 31, and the ratchet gear inner peripheral member 31 is fixed to the outer periphery of the rotating support shaft 4. A stop ring 14 is arranged on the side surface of the flange of the ratchet gear outer peripheral member 32, and is fastened and fixed to the ring-shaped body 1 with a bolt 6. The protective cover 42 is fixed by screwing a screw groove 42 a formed on the inner peripheral surface of the protective cover 42 into a screw groove 4 c formed at a predetermined position on the outer periphery of the rotation support shaft 4.

  By configuring the main part of the single-shaft manual tightening device M as described above, the assembly of the ratchet gear 3 and the rotating support shaft 4, and the assembly of the ratchet gear 3 and the rotating support shaft 4 and the ring-shaped body 1 are assembled. Becomes easy. Further, when the ring-shaped body 1 of the single-shaft manual tightening device M rotates, for example, clockwise, that is, when the ratchet gear 3 in this state is, for example, the ratchet gear 3 that transmits rotational force only in the clockwise direction, the ratchet gear The mass body (output side) including the ring-shaped body 1 including the ratchet gear outer peripheral member 32 is counterclockwise only by adding a simple work process of removing 3 from the rotation support shaft 4, reversing and incorporating it into the rotation support shaft 4. It can be changed to a single-axis manual clamping device M that rotates in the direction.

[Third Embodiment]
FIG. 17 is an exploded perspective view showing a configuration example of the main parts (ring-shaped body part, ratchet gear part, rotating support shaft part) of the single-shaft manual fastening device according to the present invention. As shown in FIG. 17, the rotation support shaft 4 has a cylindrical shape, and a pair of convex portions 4 b and 4 b are provided at the ends thereof, and the convex portions 4 b and 4 b are provided at the end portions of the ratchet gear inner peripheral member 31 of the ratchet gear 3. Recesses 31b and 31b with which 4b engages are provided (the recesses 31b and 31b are also provided on the opposite end), and the protrusions 4b and 4b of the rotating spindle 4 are engaged with the recesses 31b and 31b. By engaging (fitting), the ratchet gear inner peripheral member 31 is fixed to the rotation support shaft 4. A stop ring 14 is arranged on the side surface of the flange of the ratchet gear outer peripheral member 32, and is fastened and fixed to the ring-shaped body 1 with a bolt 6. The protective cover 42 is fixed by screwing a screw groove 42 a formed on the inner peripheral surface of the protective cover 42 into a screw groove 4 c formed at a predetermined position on the outer periphery of the rotation support shaft 4.

  By configuring the main part of the single-shaft manual tightening device M as described above, the assembly of the ratchet gear 3 and the rotating support shaft 4, and the assembly of the ratchet gear 3 and the rotating support shaft 4 and the ring-shaped body 1 are assembled. Becomes easy. Further, when the ring-shaped body 1 of the single-shaft manual tightening device M rotates, for example, clockwise, that is, in this state, the ratchet gear 3 is, for example, the ratchet gear 3 that transmits rotational force only in the clockwise direction. The shaft 4 is extracted from the ratchet gear 3, the ratchet gear 3 is reversed, and the concave portions 31 b and 31 b (not shown) provided on the opposite end of the ratchet gear inner peripheral member 31 again are provided with the convex portions 4 b of the rotary support shaft 4. Only by adding a simple work process of engaging (fitting) and fixing 4b, the ring-shaped body 1 including the ratchet gear outer peripheral member 32 can be changed to a single-shaft manual tightening device M that rotates counterclockwise.

[Fourth Embodiment]
FIGS. 18A, 18B, and 18C are exploded perspective views showing structural examples of the ring-shaped body and the joint portion of the single-shaft manual fastening device according to the present invention, respectively. In FIG. 18 (A), the joint 5 is provided with two leg portions 51 arranged in a straight line, and provided with an end side surface (a surface facing the ring-like body 1) of the leg portion 51 and a quadrangular columnar convex portion 51a. The joint 5 is fixed to the ring-shaped body 1 by inserting the convex portion 51 a into a square cylindrical hole 1 a (see FIGS. 16 and 17) provided on the side surface of the ring-shaped body 1. In addition, a rectangular column-shaped socket insertion portion 2 is provided at the axial center portion of the joint 5, and an end portion of the screwdriver socket SK 1 is inserted into the socket insert portion 2 to fix the screwdriver socket SK 1 to the joint 5. It is like that. By adopting such a configuration, it is easy to attach the joint 5 to the ring-shaped body 1 and to attach the screwdriver socket SK1 to the joint 5, and to easily change and replace the joint 5.

  Further, in FIG. 18B, the joint 5 includes four leg portions 51 arranged in a cross shape, and an end side surface (a surface facing the ring-shaped body 1) of the leg portion 51 is formed with a quadrangular columnar convex portion 51a. The joint 5 is fixed to the ring-shaped body 1 by inserting the convex portion 51 a into a square cylindrical hole 1 a (see FIGS. 16 and 17) provided on the side surface of the ring-shaped body 1. In addition, a rectangular column-shaped socket insertion portion 2 is provided at the axial center portion of the joint 5, and an end portion of the screwdriver socket SK 1 is inserted into the socket insert portion 2 to fix the screwdriver socket SK 1 to the joint 5. It is like that. By adopting such a configuration, it is easy to attach the joint 5 to the ring-shaped body 1 and to attach the screwdriver socket SK1 to the joint 5, and to easily change and replace the joint 5.

  Further, in FIG. 18C, the joint 5 includes two leg portions 51 arranged in a straight line, and an end side surface (a surface facing the ring-shaped body 1) of the leg portion 51 is provided with a quadrangular columnar convex portion 51a. The joint 5 is fixed to the ring-shaped body 1 by inserting the convex portion 51 a into a square cylindrical hole 1 a provided on the side surface of the ring-shaped body 1. A cylindrical socket insertion portion 2 is provided at the axial center portion of the joint 5. A plurality of engaging grooves 2a are provided in the outer peripheral portion of the socket insertion portion 2 in the axial direction, and a groove SK3a formed on the inner periphery of the screwing socket SK3 is engaged (fitted) with the engaging groove 2a. The screwdriver socket SK3 is fixed to the joint 5. By adopting such a configuration, the attachment of the joint 5 to the ring-shaped body 1 and the attachment of the screwdriver socket SK3 to the joint 5 are facilitated.

[Fifth Embodiment]
FIG. 19 is a cross-sectional view showing a configuration example of a single-shaft manual fastening device according to the present invention. As shown in the figure, the assembly of the rotary spindle 4 and the ratchet gear 3 of the single-shaft manual clamping device is provided with a key groove on the outer periphery of the end of the cylindrical rotary spindle 4 and within the ratchet gear 3 of the ratchet gear 3. A key groove is also provided in a corresponding portion of the inner peripheral surface of the peripheral member 31, and the end of the rotation support shaft 4 is inserted into a hole formed in the central portion of the ratchet gear inner periphery member 31. The key 15 is inserted into the key groove provided on the surface and the key groove provided on the inner peripheral surface of the ratchet gear inner peripheral member 31, and the nut 16 is screwed onto the end portion of the rotation support shaft 4 to thereby ratchet gear inner peripheral member 31. It is the structure which fastened and fixed the end surface of.

  The flange portion of the ratchet gear outer peripheral member 32 of the ratchet gear 3 fixed to the end portion of the rotation support shaft 4 is fixed from the opposite side to the concave portion formed on one side surface of the ring-shaped body 1 by the bolt 6. A cylindrical socket insertion portion 2 is integrally formed at the center of the opposite side surface of the ring-shaped body 1. The axial center of the cylindrical socket insertion portion 2 and the axial center of the ring-shaped body 1 coincide. As in the case of the socket insertion portion 2 in FIG. 18C, a large number of engagement grooves 2a are formed in the outer peripheral portion axial direction on the outer periphery of the socket insertion portion 2, and the inner periphery of the screwing socket SK3 is formed in the engagement groove 2a. The grooves SK3a formed in the are engaged (fitted). Further, the central through hole of the rotation support shaft 4 and the central through hole of the socket insertion portion 2 communicate with each other.

  With the above configuration, when a nut is tightened on a relatively long bolt, for example, when a nut is tightened on a bolt longer than the single-shaft manual tightening device, the long portion of the bolt is in the central through hole of the rotary spindle 4. Since the ring-shaped body 1 and the rotary shaft 4 do not obstruct the progress of the bolt, the nut can be rotated at a high rotational speed and screwed to a long bolt. The nut can be tightened. In the single-shaft manual tightening device, the assembly of the ratchet gear 3 and the rotary support shaft 4 is removed from the ring-shaped body 1, and the ratchet gear 3 is reversed and fixed to the rotary support shaft 4 again. 3 is fixed to the ring-shaped body 1 with bolts 6 so that the mass body (output side) including the ring-shaped body 1 including the ratchet gear outer peripheral member 32 rotates to the opposite side. It can be changed to a manual clamping device.

  It should be noted that the present invention is not limited to the above-described embodiments, and is mainly illustrated and described mainly with respect to specific embodiments. However, the technical aspects of the present invention are not limited to the above-described embodiments. Various modifications can be made by those skilled in the art in size, shape, material, quantity, and other detailed configurations without departing from the scope of the idea and purpose.

  For example, the present invention is not limited to the first to fifth embodiments. By removing the multipurpose member 7 constituting the apparatus, the mass of the entire apparatus can be further reduced. Therefore, only the screw feeding process is mainly performed continuously. A shape suitable for such work contents or a continuous work in which several threads are temporarily engaged with each other is also conceivable.

  Also, in this device, auxiliary tools, screwdriver sockets, etc. that accompany the use of this device are shown together with this device, but the screw tightening work related to the mounting work of automobile wheels to the car body is mainly used. It is a size for explanation, and in other industrial fields, it is possible to change the size and size of the apparatus.

It is sectional drawing which shows the assembly of a light metal disk wheel and a hub flange. It is an enlarged side view which shows the structural example of the screw part in a wheel attachment. It is an enlarged side view which shows the structural example of the screw part in a wheel attachment. It is an enlarged side view which shows the structural example of the screw part in a wheel attachment. It is sectional drawing which shows the assembly of steel disc wheels and a hub flange. It is sectional drawing which shows the structural example of the single axis | shaft manual clamping apparatus which concerns on this invention. (First embodiment) It is an AA arrow front view of FIG. It is BB arrow sectional drawing of FIG. It is CC sectional view taken on the line of FIG. It is DD sectional view taken on the line of FIG. It is EE arrow sectional drawing of FIG. It is a disassembled perspective view of the single axis | shaft manual clamping apparatus which concerns on this invention. It is a side view which shows the shape of a weight. It is the side view and sectional drawing of an auxiliary tool. It is the side view and front sectional view which show the structure of the socket for screwdriver. It is a disassembled perspective view which shows the principal part structural example of the single axis | shaft manual clamping apparatus which concerns on this invention. (Second embodiment) It is a disassembled perspective view which shows the principal part structural example of the single axis | shaft manual clamping apparatus which concerns on this invention. (Third embodiment) It is a disassembled perspective view which shows the principal part structural example of the single axis | shaft manual clamping apparatus which concerns on this invention. (Fourth embodiment) It is sectional drawing which shows the principal part structural example of the single axis | shaft manual clamping apparatus which concerns on this invention. (5th Example)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ring-shaped body 2 Socket insertion part 3 Ratchet gear 4 Rotation support shaft 4A Center axis handle 4B Center axis large handle 4C Center axis small handle 4D Socket insertion part 5 Joint 6 Bolt 7 Multipurpose member 8 Weight 9 Auxiliary tool 11 Ball bearing 12 Ratchet Gear Claw 13 Locking Joint 14 Locking Ring 15 Key 16 Nut 31 Ratchet Gear Inner Member 32 Ratchet Gear Outer Member 41 Ring Nut 42 Protective Cover 51 Leg SK1 Screwdriver Socket SK2 Screwdriver Socket SK3 Screwdriver Socket

Claims (7)

A ring-shaped body, a ratchet gear including a ratchet gear inner peripheral member and a ratchet gear outer peripheral member, and a rotation support shaft;
The flange portion of the ratchet gear outer peripheral member of the ratchet gear is fixed to the concave portion formed on one side surface of the ring-shaped body, and one side of the joint is passed from the vicinity of the outer periphery of the opposite side surface of the ring-shaped body to the position passing through the central axis of the ring-shaped body. And providing a rotational force output portion on the opposite side of the joint on the center axis extension of the ring-shaped body, fixing the ratchet gear inner peripheral member of the ratchet gear to the outer periphery of the rotary support shaft,
A rotational force is applied to the rotation support shaft to drive the rotational force output portion to rotate through the ratchet gear, the ring-shaped body, and the joint, and the mass body including the ring-shaped body, the joint, and the like. A single-shaft manual tightening device characterized in that the rotational force output portion is driven to rotate until the inertial force disappears. In the single axis manual clamping device according to claim 1,
A plurality of multipurpose members are fixed in a radial direction on the outer peripheral surface of the ring-shaped body, and the rotational force output unit is rotationally driven by the multipurpose member via the ring-shaped body and the joint. Single-shaft manual clamping device characterized by In the single axis manual clamping device according to claim 1 or 2,
The ratchet gear is configured to transmit a rotational force only in one direction, and the transmission direction can be selected clockwise or counterclockwise depending on the fixing direction of the ratchet gear inner peripheral member of the ratchet gear and the outer peripheral portion of the rotating support shaft. Single-shaft manual tightening device characterized by having a simple structure. In the single axis | shaft manual clamping apparatus of any one of Claims 1 thru | or 3,
The rotating support shaft includes a protective cover for preventing entrainment in a gap formed by the ring-shaped body and the ratchet gear, and includes a center shaft handle, a center shaft large handle, and a center shaft small handle. A single-shaft manual clamping device comprising a cavity inside and near a central portion, and a socket insertion portion at an end of a small handle on the central shaft. In the single axis | shaft manual clamping apparatus of any one of Claims 1 thru | or 4,
The multi-purpose member has a structure in which a weight can be fixed to an end portion in the radial direction, and an auxiliary tool can be attached to the end portion of the weight in the same radial direction. Manual tightening device. In the single axis manual clamping device according to any one of claims 1 to 5,
The distance of the rotation radius formed by the rotation support shaft, the ratchet gear, the ring-shaped body, and the multipurpose member is made as small as possible within a range having an inertial mass sufficient to rotate the screw. Single axis manual tightening device. In the single axis | shaft manual clamping apparatus of any one of Claims 1 thru | or 6,
A single-shaft manual fastening device, wherein a ball bearing having a number of steel balls is interposed between a ratchet gear inner peripheral member and a ratchet gear outer peripheral member of the ratchet gear.

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