JP3514378B2 - Transmission for fastening tools - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission for a tightening tool, and more particularly, to an impact wrench or ratchet wrench for tightening or loosening a fastener such as a bolt or a nut by rotating the fastener. The present invention relates to a transmission device configured to transmit the rotation of a tightening tool such as a bolt to a fixture such as a bolt and a nut. The transmission for a tightening tool according to the present invention is an impact wrench, for example, when tightening or loosening fasteners such as bolts and nuts arranged in a narrow space such as an automobile engine room or a place where there is an obstacle. It is used when a fastening tool such as a ratchet wrench cannot be used by directly fitting it to the fastener.

[0002]

2. Description of the Related Art As such a transmission device for a tightening tool, the one disclosed in Japanese Utility Model Laid-Open No. 2-114470 is known. This tightening tool transmission is provided with a gear train in which a plurality of transmission gears are connected in the case with idle gears interposed between the transmission gears, and each transmission gear has a drive end of the tightening tool or It is provided with an insertion hole into which a socket for a fixing tool such as a bolt or a nut is removably inserted.

[0003]

However, in the above-described conventional transmission device for a tightening tool, there is a problem that the gear train in the case is easily damaged, especially when an impact wrench is used as the tightening tool. The present invention has been made in order to solve such a problem in the conventional transmission device for a tightening tool.

[0004]

In order to solve the above problems, the present invention provides the following transmission device for a tightening tool.

(1) Fitting means for rotatably supporting the input rotary body and the output rotary body on the support body, and the drive end of the tightening tool being detachably fitted on the input rotary body. And a fitting means for detachably fitting a socket for a fixing tool such as a bolt or a nut to the output rotary body, and the input rotary body and the output rotary body are eccentric to each other. Transmission devices for tightening tools, characterized in that pins are provided at corresponding positions, and each end of a connecting rod is pivotally attached to each pin, and these pins are connected to each other through the connecting rod. (Claim 1).

(2) In the above (1), an intermediate rotary body is rotatably disposed between the input rotary body and the output rotary body on the support body, and the intermediate rotary body is rotated for input. An intermediate pin is projected at an eccentric position corresponding to the pin of the body and the pin of the output rotary member, and the intermediate pin is connected to the connecting rod (claim 2).

(3) Fitting means for rotatably supporting the input rotary member and the output rotary member respectively on the support member, and the drive end of the tightening tool being detachably fitted on the input rotary member. And a fitting means for detachably fitting a socket for a fixing tool such as a bolt or a nut to the output rotary body, and the input rotary body and the output rotary body are eccentric to each other. Pins are provided at the corresponding positions, and an intermediate rotary body is rotatably disposed between the input rotary body and the output rotary body on the support body. Pins corresponding to the pins of the rotating body for output and the pins of the rotating body for output are respectively projected, and the pins of the rotating body for input and the corresponding pins of the intermediate rotating body are connected by the first connecting rod, and the pins of the rotating body for output and the intermediate rotation pin For connecting with the corresponding pin of the moving body by the second connecting rod The intermediate rotating body is repeatedly rotated in the front-rear direction within a predetermined angle range by the rotation of the rolling body through the first connecting rod, and the rotating body for output is rotated by the rotation of the intermediate rotating body through the second connecting rod. A transmission for a tightening tool characterized by being rotated (claim 3).

(4) Fitting means for rotatably supporting the input rotary member and the output rotary member on the support member, and the drive end of the tightening tool being removably fitted on the input rotary member. The output rotary body is provided with a fitting means for detachably fitting a socket for a fixing tool such as a bolt or a nut, and the input rotary body and the output rotary body are eccentric to each other. The first pin is projected at the corresponding position,
Each end of the first connecting rod is pivotally attached to each first pin to connect these first pins to each other via the first connecting rod, and each first pin is pivotally attached to each first pin. A second pin is attached to the connecting body, each end of the second connecting rod is pivotally attached to each second pin, and these second pins are connected to each other through the second connecting rod. Transmission for a tightening tool (claim 4).

(5) In the above (4), the output auxiliary rotating body is rotatably supported on the support body so as to face the output rotating body, and the second pin of the output rotating body is supported by the output auxiliary rotating body. A fitting means that is attached to the rotating body and detachably fits a socket for a fixing tool such as a bolt or a nut to the output auxiliary rotating body is provided on the support body on the side opposite to the fitting means of the output rotating body. It is provided (Claim 5).

(6) In the above (4) or (5), the input auxiliary rotating body is rotatably supported on the support body so as to face the input rotating body, and the second pin of the input rotating body is supported. Fitting means that is attached to the input auxiliary rotating body and that detachably fits the driving end of the tightening tool to the input auxiliary rotating body is provided on the support body on the opposite side of the input rotating body of the input rotating body. (Claim 6).

(7) The support body rotatably supports the input rotary member and the input auxiliary rotary member in a state of being opposed to each other, and the output rotary member and the output auxiliary rotary member are opposed to each other. It is rotatably supported in the state, the input rotating body is provided with a fitting means for detachably fitting the driving end of the tightening tool, and the output rotating body is provided with a socket for a fixing tool such as a bolt or a nut. Equipped with a fitting means for detachably fitting, the input rotary body and the output rotary body are provided with first pins projecting at eccentric corresponding positions, and each first pin has a first series connection. Each end of the rod is pivotally connected to connect the first pins to each other through the first connecting rod, each first pin is pivotally connected to the first connecting member, and each first connecting member is connected to the first connecting member. A second pin is projected, and each end of the second connecting rod is pivotally attached to each second pin to attach these second pins to the second connecting rod. And further connect them to each other, and further project the third pin from the corresponding auxiliary rotator for input and the auxiliary rotator for output at positions corresponding to each other, which are eccentric to each other. The ends are pivotally connected to connect the third pins to each other through the third connecting rod, and the second pin and the third pin are connected by pivotally attaching the second connecting body to the second pin and the third pin on the input side. A fastening tool, characterized in that the third pin is connected to each other, and the second pin and the third pin are connected to each other by pivotally attaching the second connecting body to the second pin and the third pin on the output side. Transmission (Claim 7).

(8) In the above (7), a fitting means for detachably fitting a socket for a fixing tool such as a bolt or a nut to the output auxiliary rotary body is detachably fitted to the output rotary body of the support. It is provided on the side opposite to the fitting means (claim 8).

(9) In the above (7) or (8), a fitting means for detachably fitting the driving end of the tightening tool is detachably fitted to the input auxiliary rotary body, and the input rotary body is fitted to the support body. It is provided on the side opposite to the coupling means (Claim 9).

[0014]

A transmission for a tightening tool according to any one of claims 1 to 9 is used for tightening or loosening fasteners such as bolts and nuts arranged in a narrow space such as an engine room of an automobile or a place with an obstacle. As described above, it is used when a fastening tool such as an impact wrench or a ratchet wrench cannot be used by directly fitting it to the fastener. See FIG. 16 and FIG.

[Claiming tool transmission of claim 1] When using the clamping tool transmission of claim 1, a socket for a fixing tool such as a bolt or a nut is fitted to the fitting means of the output rotary member. In a state in which a fastener such as a bolt or a nut to be tightened or loosened is fitted to the socket, and a driving end of a tightening tool such as an impact wrench or a ratchet wrench is fitted to the fitting means of the input rotating body. The drive end of the tightening tool is rotated.

When the driving end of the tightening tool is rotated, the input rotary body rotates together with the pin, and the rotation is transmitted to the output rotary body via the connecting rod. The rotation of the output rotary body is transmitted to a fixture such as a bolt or a nut via a socket fitted to the fitting means of the output rotary body. Therefore, fasteners such as bolts and nuts are rotated or tightened or loosened in a predetermined direction. See FIGS.

[Tightening tool transmission according to claim 2] The fastening tool transmission according to claim 2 is used in the same manner as the fastening tool transmission according to claim 1.

According to the second aspect of the present invention, the pin of the intermediate rotary member disposed between the input rotary member and the output rotary member is connected to the connecting rod, so that the input rotary member can rotate more smoothly. It is transmitted to the output rotor. See Figures 4-6.

[Tightening tool transmission of claim 3] The fastening tool transmission of claim 3 is used in the same manner as the fastening tool transmission of claim 1.

The intermediate rotary body disposed between the input rotary body and the output rotary body does not rotate continuously in a fixed direction, but moves in the front-back direction (left-right direction in FIG. 7) within a predetermined angle range. ) Rotate repeatedly. That is, the rotation of the input rotary body repeatedly rotates the intermediate rotary body in the front-rear direction through the first connecting rod, and the rotation of the intermediate rotary body rotates the output rotary body through the second connecting rod. It Therefore, the input rotary body and the output rotary body rotate smoothly regardless of their stop positions, and the rotation of the tightening tool is reliably transmitted to the fastener. See FIG.

[Tightening tool transmission of claim 4] The fastening tool transmission of claim 4 is used in the same manner as the fastening tool transmission of claim 1.

According to a fourth aspect of the present invention, the input rotary member and the output rotary member are each provided with a first pin projecting therefrom, and a second pin is attached to a connecting member pivotally attached to each first pin. Since the second pins are connected to each other via the first connecting rod and the second connecting rod, the input rotary body and the output rotary body rotate smoothly regardless of their stop positions. 8,
See FIG.

[Tightening tool transmission of claim 5] In the tightening tool transmission of claim 5, a bolt,
Fitting means for detachably fitting a socket for a fixture such as a nut is attached to the output rotary body and the output auxiliary rotary body. That is, the fitting means are mounted on opposite sides of the support. Therefore, the tightening tool and the fixing tool can be located on the same side of the support by selecting the fitting means according to the position of the fixing tool such as a bolt or a nut to be tightened or loosened (see FIG. 16). ,
It can also be located on the opposite side of the support (see Figure 17).

According to a fifth aspect of the invention, the output auxiliary rotary member is rotatably supported on the support member so as to face the output rotary member, and the second pin of the output rotary member is attached to the output auxiliary rotary member. Since it is attached to the output rotary body, the output rotary body and the output auxiliary rotary body are more reliably held and rotate more reliably. Figure 1
See 0.

[Tightening tool transmission according to claim 6] In the tightening tool transmission according to claim 6, the fitting means for fitting the driving end of the tightening tool such as an impact wrench or ratchet wrench to the input rotary body. It is attached to the input auxiliary rotating body. That is, the fitting means are mounted on opposite sides of the support. Therefore, it is possible to position the tightening tool and the fastener on the same side of the support by changing the mounting position of the fitting means according to the position of the fastener such as a bolt or a nut to be tightened or loosened (Fig. 16), and can be located on the opposite side of the support (see FIG. 17).

According to a sixth aspect of the present invention, the input auxiliary rotary member is rotatably supported by the support member facing the input rotary member, and the second pin of the input rotary member is attached to the input auxiliary rotary member. Since it is attached to the input rotary body, the input rotary body and the input auxiliary rotary body are more reliably held and rotate more reliably. Figure 1
See 1.

[Tightening tool transmission of claim 7] The fastening tool transmission of claim 7 is used in the same manner as the fastening tool transmission of claim 1.

According to a seventh aspect of the present invention, the input rotating body and the input auxiliary rotating body are opposed to each other, and the output rotating body and the output auxiliary rotating body are opposed to each other. A first pin is provided on each of the body and the output rotary body, each first pin is connected to each other via a first series of connecting rods, and a first connecting body is pivotally attached to each first pin, A second pin is projectingly provided on each first connecting body, each second pin is connected to each other through a second connecting rod, and a third pin is provided on each of the input auxiliary rotating body and the output auxiliary rotating body. By projecting the pins, connecting the third pins to each other via the third connecting rod, and pivoting the second connecting bodies to the second pins and the third pins on the input side and the output side, respectively. Since the second pin and each third pin are connected to each other, the input rotating body, the input auxiliary rotating body, the output rotating body, and the output auxiliary rotating body are connected. Body more stable, more reliably and smoothly rotate irrespective of the stop position.

[Tightening tool transmission of claim 8] In the tightening tool transmission of claim 8, a bolt,
Fitting means for detachably fitting a socket for a fixture such as a nut is attached to the output rotary body and the output auxiliary rotary body. That is, the fitting means are mounted on opposite sides of the support. Therefore, the tightening tool and the fixing tool can be located on the same side of the support by selecting the fitting means according to the position of the fixing tool such as a bolt or a nut to be tightened or loosened (see FIG. 16). ,
It can also be located on the opposite side of the support (see Figure 17).

In other respects, the tightening tool transmission of claim 8 has the same operation as the tightening tool transmission of claim 7.

[Tightening tool transmission according to claim 9] In the tightening tool transmission according to claim 9, a fitting means for fitting a driving end of a tightening tool such as an impact wrench or a ratchet wrench is used as an input rotary member. And the auxiliary rotating body for input. That is, the fitting means are mounted on opposite sides of the support. Therefore, the tightening tool and the fixing tool can be located on the same side of the support body by selecting the fitting means according to the position of the fixing tool such as a bolt or a nut to be tightened or loosened (FIG. 16).
Alternatively, it may be located on the opposite side of the support (see FIG. 17).

In other respects, the tightening tool transmission of claim 9 has the same operation as the tightening tool transmission of claim 7.

[0033]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described with reference to the accompanying drawings.

First, the case shown in FIGS. 1 to 3 will be described. Designated by reference numeral 1 is a support, that is, a case of a transmission for a tightening tool. The rotating body for input 3 is provided on the support 1.
The output rotary member 5 and the output rotary member 5 are rotatably supported via bearings 7 as an example. A tightening tool 9 such as an impact wrench or a ratchet wrench is provided on the input rotating body 3.
Fitting means 13 for detachably fitting the driving end 11 of the above is provided. The fitting means 13 is, for example, a square hole. Fasteners 1 such as bolts and nuts for the output rotary member 5
Fitting means 19 for detachably fitting the socket 17 for 5 is provided. The fitting means 19 is, for example, a square hole. The input rotary body 3 and the output rotary body 5 are provided with pins 21 and 23 projecting at positions corresponding to each other, which are eccentric to each other, and the pins 21 and 23 have ends 25a and 2 of the connecting rod 25 respectively.
5b, and these pins 21 and 23 are connected to the connecting rod 25.
Are connected to each other via.

The cases shown in FIGS. 4 to 6 are the same as those shown in FIGS.
An intermediate rotating body is added to the case shown in. That is, the intermediate rotating body 27 is rotatably disposed on the support body 1 between the input rotating body 3 and the output rotating body 5 via the bearing 7 as an example. An intermediate pin 29 is projectingly provided at an eccentric position corresponding to the pin 21 of the rotary body 3 and the pin 23 of the output rotary body 5, and the intermediate pin 2
9 is connected to the connecting rod 25. It is also possible to dispose a plurality of intermediate rotors 27, project intermediate pins 29 on each intermediate rotor 27, and connect each intermediate pin 29 to the connecting rod 25.

The case shown in FIG. 7 is a modification of the cases shown in FIGS. Only differences between the case shown in FIG. 7 and the cases shown in FIGS. 4 to 6 will be described below. An intermediate rotating body 28 is rotatably arranged on the support 1 between the input rotating body 3 and the output rotating body 5. The intermediate rotating body 28 is rotatable in the front-rear direction within a predetermined angle range, but is not necessarily required to be continuously rotatable in a fixed direction.
Although the intermediate rotating body 28 in the illustrated example has a disk shape, the intermediate rotating body 28 does not matter what shape it is, and may be a rod-shaped body. Intermediate rotating body 28
May be supported by a bearing (not shown), but may be attached to the rotating shaft. The intermediate rotating body 28 is provided with pins 22 and 24 corresponding to the pin 21 of the input rotating body 3 and the pin 23 of the output rotating body 5, respectively. The pin 21 of the input rotary body 3 and the corresponding pin 22 of the intermediate rotary body 28 are connected by the first connecting rod 26, and the output rotary body 5 is connected.
2 and the corresponding pin 24 of the intermediate rotating body 28 are connected by the second connecting rod 30, so that the rotation of the input rotating body 3 causes the intermediate rotating body 28 to move through the first connecting rod 26 in a predetermined angle range. Is repeatedly rotated in the front-rear direction in the intermediate rotating body 2
By the rotation of 8, the output rotary body 5 is rotated via the second connecting rod 30. That is, the rotation radius a of the pin 21 in the input rotary body 3 is smaller than the rotation radius b of the pin 22 in the intermediate rotary body 28, and the rotation radius c of the pin 23 in the output rotary body 5 is the pin in the intermediate rotary body 28. It is smaller than the turning radius d of 24. In addition, the intermediate rotating body 28
Rotates within a rotation range e of 45 degrees as an example.

The cases shown in FIGS. 8 to 9 are modifications of the cases shown in FIGS. Only the differences between the cases shown in FIGS. 8 to 9 and the cases shown in FIGS. 1 to 3 will be described below. The input rotary body 3 and the output rotary body 5 are provided with first pins 21 ′ and 23 ′ projecting from the eccentric corresponding positions. The first connecting rod 2 on each of the first pins 21 'and 23'
Each end 25a ', 25b' of 5'is pivotally attached to connect these first pins 21 ', 23' to each other via said first connecting rod 25 '. The connecting body 3 is attached to each of the first pins 21 'and 23'.
Pivots 1, 33. The connecting members 31 and 33 shown in the figure are plate-shaped members, but the connecting members 31 and 33 are disc-shaped members (see FIG. 14).
It may have any other shape. This point is the same for each connected body described later. Each connected body 3
Second pins 35 and 37 are attached to 1, 33. In addition,
The opening angle f (FIG. 14) between the first pin 21 ′ and the second pin 35 with respect to the center 3A of the input rotating body 3 is preferably 90.
Degree. The first pin 2 with respect to the center of the output rotator 5
Similarly, the opening angle (not shown) between 3'and the second pin 37 is also preferably 90 degrees. Further, each second pin 35, 3
Each end 39a, 39b of the second connecting rod 39 is pivotally attached to the shaft 7, and these second pins 35, 37 are connected to each other via the second connecting rod 39.

The case shown in FIG. 10 is a modification of the case shown in FIGS. Below, regarding the case shown in FIG.
Only differences from the case shown in FIG. 9 will be described. The output auxiliary rotary body 41 is opposed to the output rotary body 5 on the support body 1 and is rotatably supported via a bearing 7 as an example. The second pin 37 of the output rotary body 5 is attached to the output auxiliary rotary body 41. A fitting means 43 for removably fitting a socket 17 for a fixing tool 15 such as a bolt or a nut is provided on the output auxiliary rotating body 41 on the side opposite to the fitting means 19 of the output rotating body 5 in the support body 1. Prepare for.
The fitting means 43 of the output auxiliary rotary body 41 is the output rotary body 5
The fitting means 19 may be the same as the fitting means 19.

The case shown in FIG. 11 is a modification of the case shown in FIGS. Below, regarding the case shown in FIG.
Only differences from the case shown in FIG. 9 will be described. On the support body 1, an input auxiliary rotary body 45 is opposed to the input rotary body 3 and is rotatably supported via a bearing 7 as an example. The second pin 35 of the input rotary body 3 is attached to the input auxiliary rotary body 45. The input auxiliary rotary body 45 is provided with a fitting means 47 for detachably fitting the driving end 11 of the tightening tool 9 on the opposite side of the support body 1 from the fitting means 13 of the input rotary body 3. Input auxiliary rotating body 4
The fitting means 47 of 5 is the fitting means 13 of the input rotating body 3.
The same as

The cases shown in FIGS. 12 to 13 are modifications of the cases shown in FIGS. 8 to 9. The case shown in FIGS. 12 to 13 will be described below. In the support 1, the input rotating body 3 and the input auxiliary rotating body 45 are rotatably supported via bearings 7 while facing each other, and the output rotating body 5 and the output auxiliary rotating body are respectively supported. 41 and 41 are rotatably supported via bearings 7 in a state of facing each other. The input rotating body 3 is provided with fitting means 13 for removably fitting the drive end 11 of the tightening tool 9. The output rotating body 5 is provided with a fitting means 19 for detachably fitting a socket 17 for a fixing tool 15 such as a bolt or a nut. The input rotary body 3 and the output rotary body 5 are provided with first pins 21 'and 23' projecting from the respective eccentric positions corresponding to each other.
Each end 25a ', 25b' of the first connecting rod 25 'is pivotally attached to 23' to connect these first pins 21 ', 23' to each other via the first connecting rod 25 '. Each first pin 21 ',
The first connecting bodies 31 'and 33' are pivotally attached to 23 ', and the second pins 35 and 37 are projectingly provided on the first connecting bodies 31' and 33 ', respectively. Each end 39 of the two connecting rod 39
The second pins 35 and 37 are connected to each other through the second connecting rod 39 by pivotally attaching a and 39b. Further, the input auxiliary rotary body 45 and the output auxiliary rotary body 41 are provided with third pins 51 and 53 projecting from the respective eccentric corresponding positions, and the third connecting rod 55 is provided on each of the third pins 51 and 53. Each end of 55
The third pins 51 and 53 are pivotally attached to each other and the third pins 51 and 53 are connected to each other via the third connecting rod 55. The second pin 35 and the third pin 51 on the input side are pivotally attached to the respective ends 57a and 57b of the second connecting body 57 so that the second pin 35
And the third pin 51 are mutually connected. Further, the second connecting body 59 is connected to the second pin 37 and the third pin 53 on the output side.
The second pin 37 and the third pin 53 are connected to each other by pivotally connecting each end 59a, 59b of the. The opening angle g (FIG. 15) between the first pin 21 ′ and the second pin 35 with respect to the center 3A of the input rotating body 3 (FIG. 15) and the opening angle h between the second pin 35 and the third pin 51 ( 15) and the opening angle i between the third pin 51 and the first pin 21 '(FIG. 15)
Is preferably 120 degrees. Output rotor 5
The opening angle between the first pin 23 'and the second pin 37, the opening angle between the second pin 37 and the third pin 53 and the third pin 53 and the first pin 23' with respect to the center of Similarly, the opening angles are preferably 120 degrees.

In the case shown in FIGS. 12 to 13, the output auxiliary rotating body 41 has a fixing member 15 such as a bolt or a nut.
Means 4 for detachably fitting the socket 17 for use in
3 is the fitting means 1 of the output rotary body 5 in the support body 1.
It is desirable to provide it on the side opposite to 9. The fitting means 43 of the output auxiliary rotary body 41 may be the same as the fitting means 19 of the output rotary body 5.

In the case shown in FIGS. 12 to 13, a fitting means 47 for detachably fitting the driving end 11 of the tightening tool 9 to the input auxiliary rotary body 45 is provided on the support body 1 for the input rotary body 3. It is desirable to provide it on the side opposite to the fitting means 13. The fitting means 47 of the input auxiliary rotating body 45 may be the same as the fitting means 13 of the input rotating body 3.

[0043]

According to the transmission device for a tightening tool of claims 1 to 9, the rotation of the tightening tool is transmitted to the fixing tool via each rotating body, pin, connecting rod, connecting body, and the like. Since no gear is used, it has favorable durability.

[Tightening Tool Transmission Device According to Claim 1] The rotation of the tightening tool is smoothly transmitted to the fasteners such as bolts and nuts through the input rotary member, the pin, the connecting rod, and the output rotary member.

[Tightening tool transmission according to claim 2] Since the pin of the intermediate rotary member arranged between the input rotary member and the output rotary member is connected to the connecting rod, the input rotary member The rotation is transmitted to the output rotating body more smoothly.

[Transmission device for tightening tool according to claim 3] By the rotation of the input rotary member, the intermediate rotary member is repeatedly rotated in the front-rear direction within a predetermined angle range through the first connecting rod, and the intermediate rotary member is rotated. The rotating body for output is rotated by the rotation of the second connecting rod. Therefore, the input rotary body and the output rotary body rotate smoothly regardless of their stop positions, and the rotation of the tightening tool is reliably transmitted to the fastener.

[Transmission device for tightening tool according to claim 4] First pin is provided on each of the input rotary member and the output rotary member, and the second pin is attached to the connecting member pivotally attached to each first pin. Since the first pin and the second pin are connected via the first connecting rod and the second connecting rod, respectively, the input rotary member and the output rotary member can be smoothly operated regardless of their stop positions. Rotate.

[Transmission device for tightening tool according to claim 5] Fitting means for detachably fitting sockets for fasteners such as bolts and nuts are attached to the output rotary member and the output auxiliary rotary member. . That is, the fitting means are mounted on opposite sides of the support. Therefore, by selecting the fitting means according to the position of the fastener such as a bolt or a nut to be tightened or loosened, the tightening tool and the fastener can be located on the same side or opposite sides of the support. You can also

Further, the output auxiliary rotary member is rotatably supported on the support member so as to face the output rotary member, and the second pin of the output rotary member is attached to the output auxiliary rotary member. The output rotator and the output auxiliary rotator are more reliably held and rotate more reliably.

[Transmission device for tightening tool according to claim 6] In the transmission device for tightening tool according to claim 6, the fitting means for fitting the driving end of the tightening tool such as an impact wrench or a ratchet wrench is the input rotary member. It is attached to the input auxiliary rotating body. That is, the fitting means are mounted on opposite sides of the support. Therefore, by selecting the fitting means according to the position of the fastener such as a bolt or a nut to be tightened or loosened, the tightening tool and the fastener can be located on the same side of the support or the opposite of the support. It can also be located on the side.

Further, since the input auxiliary rotary body is rotatably supported so as to face the input rotary body on the support body, and the second pin of the input rotary body is attached to the input auxiliary rotary body, The input rotator and the input auxiliary rotator are more reliably held and rotate more reliably.

[Tightening tool transmission according to claim 7] The input rotating body and the input auxiliary rotating body are opposed to each other, and the output rotating body and the output auxiliary rotating body are opposed to each other. Then, the input rotary body and the output rotary body are respectively provided with the first pins protruding therefrom, and the first pins are connected to each other through the first series of connecting rods, and the first connecting bodies are connected to the respective first pins. A second pin protruding from each of the first connecting bodies, and connecting the second pins to each other via a second connecting rod, and further connecting an input auxiliary rotary body and an output auxiliary rotary body. Each of them has a third pin projecting therefrom, and the third pins are connected to each other via a third connecting rod, and the second connecting body is pivotally connected to each of the second pin and each third pin on the input side and the output side. By connecting each second pin and each third pin to each other by wearing, input rotation body, input auxiliary rotation body and output rotation Output auxiliary rotor and is more stable,
It rotates more reliably and smoothly regardless of the stop position.

[Transmission device for tightening tool according to claim 8] Fitting means for detachably fitting sockets for fasteners such as bolts and nuts are attached to the output rotary member and the output auxiliary rotary member. . That is, the fitting means are mounted on opposite sides of the support. Therefore, by selecting the fitting means according to the position of the fastener such as a bolt or a nut to be tightened or loosened, the tightening tool and the fastener can be located on the same side of the support or the opposite of the support. It can also be located on the side.

[Transmission device for tightening tool according to claim 9] Fitting means for fitting the driving end of the tightening tool such as an impact wrench or ratchet wrench is attached to the input rotary body and the input auxiliary rotary body. That is, the fitting means are mounted on opposite sides of the support. Therefore,
It is also possible to position the tightening tool and the fastener on the same side of the support by selecting the fitting means according to the position of the fastener such as a bolt or a nut to be tightened or loosened.
It can also be located on the opposite side of the support.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a transmission device for a tightening tool.

FIG. 2 is an explanatory view showing a part of the transmission for a tightening tool of the above.

FIG. 3 is a plan view of the same transmission device for a tightening tool.

FIG. 4 is a sectional view showing another example of a transmission device for a tightening tool.

FIG. 5 is an explanatory view showing a part of the transmission for a tightening tool of the above.

FIG. 6 is a plan view of the same transmission device for a tightening tool.

FIG. 7 is an explanatory view showing a part of still another example of the transmission device for a tightening tool.

FIG. 8 is a cross-sectional view showing still another example of a transmission device for a tightening tool.

FIG. 9 is an explanatory view showing a part of the transmission for a tightening tool of the above.

FIG. 10 is a cross-sectional view showing yet another example of a transmission device for a tightening tool.

FIG. 11 is a cross-sectional view showing still another example of a transmission device for a tightening tool.

FIG. 12 is a cross-sectional view showing still another example of a transmission for a tightening tool.

FIG. 13 is an explanatory view showing a part of the transmission for a tightening tool of the above.

FIG. 14 is an explanatory diagram showing an opening angle of each pin in the input rotary body.

FIG. 15 is an explanatory diagram showing an opening angle of each pin in the input rotating body in another example.

FIG. 16 is an explanatory diagram showing an example of a usage state of the tightening tool transmission device.

FIG. 17 is an explanatory diagram showing another example of a usage state of the tightening tool transmission device.

[Explanation of symbols]

1 support 3 input rotating body 3A center 5 Output rotating body 7 bearings 9 tightening tools 11 Drive end 13 Fitting means 15 Fastener 17 socket 19 Fitting means 21 pin 21 'pin 22 pin 23 pin 23 'pin 24 pin 25 connecting rod 25a end 25b end 25 'series of contacts 25a 'end 25b 'end 26 First Connection Rod 27 Intermediate rotating body 28 Intermediate rotating body 29 Middle pin 30 Second connection rod 31 connected body 31 'first connector 33 Connected body 33 'first connector 35 Second Pin 37 Second Pin 39 Second connecting rod 39a edge 39b end 41 Output auxiliary rotor 43 Fitting means 45 Input auxiliary rotating body 47 fitting means 51 Third Pin 53 Third pin 55 Third connecting rod 55a end 55b end 57 Second connector 57a edge 57b edge 59 Second connector 59a edge 59b end

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Claims (9)

(57) [Claims] 1. A support body (1) rotatably supports an input rotary body (3) and an output rotary body (5),
The input rotating body (3) is provided with a fitting means (13) for detachably fitting the drive end (11) of the tightening tool (9), and the output rotating body (5) is provided with a bolt, A fitting means (19) for detachably fitting a socket (17) for a fixing tool (15) such as a nut is provided, and the input rotating body and the output rotating body are eccentric to each other and correspond to each other. The pins (21) and (23) are projected at the positions to be connected, and the ends (25a) and (25b) of the connecting rod (25) are pivotally attached to each pin to connect these pins to each other through the connecting rod. The input times
The fitting means (13) of the rolling element (3) has an impact wrench,
Drive end (1) of tightening tool (9) such as ratchet wrench
1) is fitted and the driving end (11) of the tightening tool (9)
A transmission device for a tightening tool, characterized in that it is adapted to rotate . 2. The support (1) includes an intermediate rotor (2) between an input rotor (3) and an output rotor (5).
7) is rotatably disposed, and the intermediate rotor is provided with an intermediate pin (29) at an eccentric position corresponding to the pin (21) of the input rotor and the pin (23) of the output rotor. The transmission for a tightening tool according to claim 1, wherein the intermediate pin is projectingly provided and the intermediate pin is connected to the connecting rod (25). 3. The support (1) rotatably supports an input rotary body (3) and an output rotary body (5),
The input rotator (3) is provided with a fitting means for removably fitting the driving end of the tightening tool, and the output rotator (3) is provided with a socket for a fastener such as a bolt or a nut. Fitting means for fitting are provided, and pins (21) and (23) project from the input rotary body and the output rotary body at corresponding positions that are eccentric to each other. Intermediate rotating body (28) between the rotating body for output and the rotating body for output
Is rotatably disposed, and pins (22) and (24) corresponding to the pin (21) of the input rotary body and the pin (23) of the output rotary body are provided on the intermediate rotary body so as to project therefrom. , The pin (21) of the input rotary body and the corresponding pin (22) of the intermediate rotary body are connected by the first connecting rod (26), and the pin (23) of the output rotary body and the corresponding pin of the intermediate rotary body ( 24) is connected with a second connecting rod (30) ,
The fitting means of (3) is an impact wrench, ratchet tray
The driving end of a tightening tool such as a punch
The drive end of the tool is rotated, whereby the intermediate rotating body is repeatedly rotated in the front-rear direction within a predetermined angle range by the rotation of the input rotating body through the first connecting rod. A transmission device for a tightening tool, characterized in that the rotating body for output is rotated through the second connecting rod by the rotation. 4. A support body rotatably supports an input rotary body (3) and an output rotary body (5), and a drive end of a tightening tool is detachably fitted to the input rotary body. A fitting means for mating is provided, and the output rotating body is provided with a fitting means for detachably fitting a socket for a fixing tool such as a bolt or a nut, and the input rotating body and the output rotating body are provided. First pins (21 ') (23') projecting from the respective eccentric corresponding positions, and each end (25a ') (25b') of the first connecting rod (25 ') is provided on each first pin. ) Is pivotally connected to connect these first pins to each other via the first connecting rod (25 '), and each first pin has a connecting body (31) (33).
The second connecting rod (39) at each end (39).
a) (39b) are pivotally attached to connect these second pins to each other via the second connecting rod, and the input rotating body (3)
Fitting means such as impact wrench, ratchet wrench, etc.
Drive the tightening tool by fitting the driving end of the tightening tool
A transmission for a tightening tool, characterized in that the end is rotated . 5. An auxiliary rotating body for output (4
1) is rotatably supported by being opposed to the output rotary body (5), the second pin (37) of the output rotary body is attached to the output auxiliary rotary body, and the output auxiliary rotary body is bolted. , A fitting means (43) for removably fitting a socket for a fixing tool such as a nut is provided on the support body on the side opposite to the fitting means (19) of the output rotary body. The transmission for a tightening tool according to claim 4. 6. A rotating body (3) for input and an output rotary body for the support body.
The rotary body (5) and was supported on each rotary self standing, the input
The drive end of the tightening tool is detachably fitted to the rotating body for use
A fitting means for mating is provided, and
Removably fit sockets for fasteners such as
Equipped with mating fitting means, input rotation body and output rotation
The first pin is located at a position corresponding to the body and is eccentric.
(21 ') and (23') are projected, and each first pin is connected to the first series.
Pivot each end (25a ') (25b') of the rod (25 ')
These first pins through the first series of connecting rods (25 ')
They are connected to each other, and each first pin has a connecting body (31) (33).
The second pin (35) (37) to each connecting body.
A second connecting rod (39) at each end (39
a) (39b) are pivotally attached to these second pins to connect the second pins.
The input auxiliary rotary body (45) is rotatably supported on the support body so as to be opposed to the input rotary body (3), and the second pin ( 35) is attached to the input auxiliary rotary body, and fitting means (47) for detachably fitting the driving end of the tightening tool to the input auxiliary rotary body is fitted to the input rotary body in the support body. The input rotating body is provided on the side opposite to the means (13).
(3) or the fitting means of the input auxiliary rotating body (45)
For tightening tools such as
Fit the drive end and rotate the drive end of the tightening tool
A transmission for a tightening tool characterized by the above . 7. A support body rotatably supports an input rotary body (3) and an input auxiliary rotary body (45) in a state of being opposed to each other, and at the same time, an output rotary body (5) and an output auxiliary body. The rotator (41) is rotatably supported in a state of being opposed to each other, and the input rotator is provided with fitting means (13) for removably fitting the driving end of the tightening tool. The body is provided with a fitting means (19) for detachably fitting a socket for a fixing tool such as a bolt and a nut, and the input rotary body and the output rotary body are eccentric to each other at corresponding positions. First pin (21 ') (23') is projected on the
Each end (25a ') of the first connecting rod (25') on each first pin
(25b ') is pivotally connected to connect the first pins to each other through the first connecting rod (25'), and each first pin has a first connecting body (31 ') (33'). And second pins (35) (37) projecting from each first connecting body, and each end (39a) (39b) of the second connecting rod (39) is pivotally connected to each second pin. Then, these second pins are connected to each other through the second connecting rod (39), and the input auxiliary rotary body (45) and the output auxiliary rotary body (41) are eccentric to each other. The third pins (51) (53) are projected at corresponding positions, and the respective ends (55a) (55b) of the third connecting rod (55) are pivotally attached to the respective third pins so that these third pins are connected. The second connecting body (57) is connected to each other through the third connecting rod (55), and the second connecting body (57) is pivotally attached to the second pin (35) and the third pin (51) on the input side. Pin and the The second pin and the third pin are connected to each other by connecting the third pin to each other and pivotally attaching the second connecting body (59) to the second pin (37) and the third pin (53) on the output side. And the input rotating body (3)
The impact fitting wrench and ratchet for the fitting means (13)
Fit the drive end of a tightening tool such as a wrench and tighten
A transmission device for a tightening tool, characterized in that a drive end of the tool is rotated . 8. An output rotary body (5) in a support body, wherein the output auxiliary rotary body (41) has a fitting means (43) for detachably fitting a socket for a fixture such as a bolt or a nut. The transmission for a tightening tool according to claim 7, wherein the transmission is provided on the side opposite to the fitting means (19). 9. A fitting means (47) for removably fitting a driving end of a tightening tool to the input auxiliary rotary body (45), and the fitting means for the input rotary body (3) in a support body. (13) is provided on the opposite side, and the input is made.
Of the rotating body (3) for input or the auxiliary rotating body (45) for input
Tighten impact wrench, ratchet wrench, etc. on the steps
Fit the drive end of the tightening tool and rotate the drive end of the tightening tool.
The transmission for a tightening tool according to claim 7 or 8, characterized in that the transmission is rotated.