JPH0553861U - Color nut tightening tool - Google Patents

Abstract

(57) [Summary] [Purpose] The fastening workability is good and the collar nut can be tightened with the required fastening force without depending on the operator's feeling. [Structure] A main body jaw portion having a main body gripping portion is formed by bending the upper portion of a main body portion having a substantially rectangular cross section, and a groove portion is provided over a predetermined range of the main body portion, and one end portion of the groove portion is formed at the end portion. A jaw attachment having an attachable gripping portion capable of gripping a collar nut in confrontation with the main body gripping portion is pivotally mounted to provide a space between the main body gripping portion and the attachable gripping portion so that the groove can be opened and closed. A stopper member for restricting rotation of the jaw attachment in the closing direction is provided, one end of the jaw attachment is fixed to the main body, and the other end is inserted into the groove so that the other end of the jaw attachment is on the back edge of the pivot attachment side. A plate spring is provided which is slidably press-contacted with the main body, and a main body handle having a torque setting device is continuously provided at the base of the main body.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a tightening tool for a color nut in the case of connecting a speedometer flexible shaft to a vehicle speedometer, for example.

[0002]

[Prior Art]

 Conventionally, a speedometer flexible shaft 1 connected to a speedometer of a vehicle of this type is rotatably inserted in a flexible protective tube 2 as shown in FIG. A mounting pipe 3 having a flange 3a is mounted, and a collar nut 4 is rotatably mounted on the mounting pipe 3. The collar nut 4 is formed in a substantially cylindrical shape having a predetermined diameter, and a screw 5 is screwed on the inner diameter portion, and at one edge portion, an engaging edge 6 for engaging with the flange 3a is formed. Further, the non-slip portion 7 having a mountain-shaped cross section is continuously formed on the outer circumference. In the speedometer flexure shaft 1 thus formed, the coaxial 1 is connected to the input shaft 9 of the speedometer 8 by the key 10, and the collar nut 4 is fastened to the screw portion 12 of the mounting portion 11 of the speedometer 8. The collar nut 4 was fastened with a general-purpose standard tool such as pliers with a standard tightening torque of about 150 Kgf · cm.

[0003]

[Problems to be solved by the device]

 However, when tightening manually with pliers as described above, the tightening torque depends on the feeling of the operator, and therefore the tightening force is inevitably lower than the standard tightening torque of 150 Kgf · cm. There was a problem that the pliers were loosened, and it took time to open and close the pliers, and it took time to tighten them.

The present invention has been made in order to solve the above-mentioned conventional problems. The fastening workability is good, and the collar nut can be fastened with a required fastening force without depending on the feeling of the operator. The purpose is to provide a tool with attachment.

[0005]

[Means for Solving the Problems]

 In order to solve the above technical problem, the present invention forms a main body jaw portion having a main body holding portion by bending at the top of a main body portion having a substantially rectangular cross section, and penetrating the groove portion within a predetermined range of the main body portion. Installed in the same groove, the jaw attachment is attached at one end opposite the main body grip to attach the grip nut so that the collar nut can be gripped. A stopper member that restricts the rotation of the jaw attachment in the closing direction is provided in the groove portion, and one end is fixed to the main body portion and is inserted into the groove portion. A leaf spring is provided, the other end of which is in pressure contact with the back edge of the jaw attachment on the pivoting side of the jaw attachment so as to be slidable, and a base handle of the main body is provided with a main body handle having a torque setting device. Color nut tightening It resides in.

[0006]

[Action]

 With the above configuration, the tightening and re-tightening of the collar nut can be performed with a constant tightening force without removing the tool from the collar nut.

[0007]

【Example】

 Next, a position embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an entire tightening tool 20, which is composed of a main body portion 21, a jaw attachment 27 and a main body handle portion 35. ing.

The main body portion 21 has a predetermined thickness and is formed in a rod shape having a substantially quadrangular cross section, and one end side thereof is bent and formed in a substantially doglegged shape as shown in the drawing. 22 and the strut portion 23, a plurality of continuous ridges having a mountain-shaped cross-section are formed on the inner surface on the tip side of the bent portion 22, and a main body jaw portion 24 having a main body holding portion 25 is formed. Has been done. Further, a groove portion 26 having a predetermined width and fitted in the width direction is formed at a predetermined position of the straight portion 23 from a predetermined position of the main body jaw portion 24 in the center of the main body portion 21 in the thickness direction. A jaw attachment 27 is pivotally attached to the body portion 21 thus formed.

The jaw attachment 27 is formed into a substantially crescent-shaped plate that can be inserted into the groove portion 26 of the main body portion 21, and one end side thereof is inserted into the groove portion 26 of the main body portion 21 so that a predetermined bending portion of the bending portion 22 is formed. Is pivotally attached to the main body via the rotary shaft 28, and an attachment jaw 29 is integrally formed at the other end so as to face the main body holding portion 25. The attachment jaw 29 is almost the same as the main body jaw portion 24. It is formed to have a thickness and is formed in a substantially V shape, and a plurality of continuous ridges having a mountain-shaped cross section are projected and attached to the substantially C-shaped surface facing the main body jaw portion 24. A holding portion 30 is formed. Further, an attachment handle 32 having a predetermined length is formed so as to extend at a predetermined position of the back edge 31 of the jaw attachment 27 on the side of the attach grip portion 30.

A stopper member 33 is provided on the upper side of the groove portion 26 of the main body portion 21 to regulate the movement of the jaw attachment 27 in the closing direction, that is, to regulate the mouth width with the grip portions 25 and 30 to a predetermined width. Is fixed to the groove portion 26, and one end of a leaf spring 34 having a predetermined spring pressure is screwed to the outer surface of the main body portion 21 in the groove portion 26, and the other end portion is inserted into the groove portion 26. The back edge 31 of the attachment 27 is slidably pressed against the rotary shaft 28 side so that the attachment grip portion 30 does not have a large opening with respect to the main body grip portion 25. It is provided so that it can be held in the required width.

The main body handle 35 is attached to a flat portion 23a formed at the lower end of the straight portion 23 of the main body 21 via a shaft pin 36. The main body handle portion is, for example, a single-purpose torque setting device. The device is installed inside, and when the collar nut 4 is tightened, it is configured to make a clicking sound with a tightening force of 150 kgf · cm, and the lid 37 attached to the same handle 35 is displaced and installed inside. It is provided so that the torque setting can be adjusted by operating the torque setting device.

Next, a case where the collar nut 4 is tightened by the tightening tool 20 formed as described above will be described. First, the flexible shaft 1 is connected to the input shaft 9 of the speedometer 8, and then the collar nut 4 is screwed into the screw portion 12 of the mounting portion 11 of the speedometer 8. Then, the jaw pattern 27 of the jaw handle 27 is set to be slightly wider than the outer shape of the collar nut 4 with respect to the main body gripping portion 25 with the attachment 32 as the center. In this case, since the leaf spring 34 is in contact with the back edge 31 of the jaw attachment 27, the mouth width does not open more than necessary. In this state, while holding both handles 32 and 35, the collar nut 4 is placed between the mouths thereof, and the attached handle 32 is operated to bring both gripping portions 25 and 30 into contact with the outer periphery of the nut 4 to be attached. Even in this state, the leaf spring 34 acts on the jaw attachment 27 and the clinging state is maintained.

In this clasped state, both handles 32 and 35 are gripped and tightened (about 1/2 turn). In this case, since the leaf spring 34 is in contact with the back edge 31 of the jaw attachment 27, it is not necessary to apply a gripping force to the attach handle 32, and therefore the main handle 35 can be used for tightening.

To re-tighten, the grip force on the color nut 4 is released by slightly operating the attach handle 32 in the opening direction, and the collar nut 4 is returned along the outer periphery thereof. Even in this returning operation, the leaf spring 34 acts on the jaw attachment 27 so that the holding portions 25 and 30 are held at the returning opening.

After performing the above tightening a plurality of times, the tightening torque is confirmed by the main body handle (torque wrench) 35. This torque confirmation can be confirmed by operating in the tightening direction while holding the handle 35 of the main body, by a click feeling and a clicking sound that bend from the shaft pin 36. After that, the jaw attachment 27 is opened by the attachment handle 32 to remove the tool 20. Thereafter, the collar nut 4 is tightened sequentially by the above procedure.

As described above, the tightening tool 20 of this embodiment is bent at the upper portion of the main body portion 21 having a substantially rectangular cross section to form the main body jaw portion 24 having the main body holding portion 25, and the main body portion 21 is provided with a predetermined range. A jaw attachment 27 having an attachable grip portion 30 for gripping the collar nut 4 is provided at one end of the groove portion 26 so as to extend therethrough, and a main body grip portion 25 is provided. The groove 26 is provided with a stopper member 33 for restricting the rotation of the jaw attachment 27 in the closing direction, and one end of the groove is fixed to the main body. A leaf spring 34, which is inserted into the base plate 25 and has the other end slidably pressed against the back edge 31 of the pivot attachment portion of the jaw attachment 27, is provided. The main body handle portion 35 is continuously provided. Therefore, the adjustment of the mouth width between the main body grip portion 25 and the attach grip portion 30 with respect to the collar nut 4 is restricted by the stopper member 33 in the closing direction, and the leaf spring 34 adjusts the opening direction. Since it is pressed more tightly and its over-opening is suppressed by the spring pressure, it is possible to easily adjust the mouth width. Therefore, tighten and re-tighten the collar nut 4 from the collar nut 4 each time the tool is removed. Since it can be performed continuously without being tightened, the tightening work can be performed efficiently, and since the main body handle 35 is connected by incorporating the torque setting device, the tightening torque of the collar nut 4 is made constant. Therefore, it is possible to eliminate quality problems such as looseness.

[0017]

[Effect of the device]

 According to the present invention, with the above-mentioned configuration, the adjustment of the opening width between the body grip portion and the attach grip portion with respect to the collar nut is restricted by the stopper member in the closing direction, and the adjustment in the opening direction is performed. Is pressed by the leaf spring, and its excessive opening is suppressed by the spring pressure, so that the mouth width can be adjusted easily.Therefore, tighten and re-tighten the color nut by removing the tool from the collar nut each time. Since it can be carried out continuously without any trouble, the tightening work can be performed efficiently.Because the handle of the main body is connected by incorporating the torque setting device, the tightening torque of the collar nut can be kept constant. Therefore, quality problems such as looseness can be eliminated.

[Brief description of drawings]

FIG. 1 is a front view of a collar nut tightening tool.

FIG. 2 is a front view of a state in which a collar nut tightening tool is gripped.

FIG. 3 is a perspective view of a main body jaw portion.

FIG. 4 is a cross-sectional view showing connection of a speedometer flexible shaft.

[Explanation of symbols]

 4 Color Nut 20 Color Nut Tightening Tool 21 Main Body 24 Main Body Jaw 25 Main Body Grip 26 Groove 27 Jaw Attachment 29 Attach Jaw 30 Attach Grip 31 Back Edge 33 Stopper Member 34 Leaf Spring 35 Body Handle

Claims (1)

[Scope of utility model registration request] 1. A main body jaw portion having a main body holding portion that is bent at the upper portion of a main body portion having a substantially rectangular cross section, and a groove portion is provided over a predetermined range of the main body portion, and one end portion of the groove portion is formed. A jaw attachment having an attachable gripping portion capable of gripping a collar nut in confrontation with the main body gripping portion is pivotally attached to the main body gripping portion and the attachable gripping portion so as to be openable and contractable, and the groove portion Is provided with a stopper member for restricting the rotation of the jaw attachment in the closing direction, one end of which is fixed to the main body portion and is inserted into the groove portion, and the other end of which is a spine on the pivot attachment portion side of the jaw attachment. A collar nut tightening tool having a structure in which a leaf spring is slidably brought into pressure contact with an edge and a main body handle portion having a torque setting device is continuously provided at the base portion of the main body portion.