JPH04106169U - screw fastener - Google Patents

Abstract

(57) [Summary] [Purpose] The present invention relates to a screw fastener that can fasten multiple types of screws with different head shapes using the same tool. [Structure] A first tip 2 that fits into a screw head having a certain shape at one end 2a, and a first tip 2 provided on the outer periphery of the first tip and whose one end 3a fits into another screw head. 2 tip 3
Then, the first tip 2 and the second tip 2 are placed at at least two locations, the position where the first tip 2 protrudes from the tip and the position where the second tip 3 protrudes from the tip. This screw fastener is constituted by a locking means 4 that locks the screws 3 and 3 together.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a screw fastener.

0002

[Conventional technology]

In general, potentiometers are used in measuring instruments, such as automotive air flow meters. The output value is adjusted by adjusting the sliding terminal of the motor. Therefore, this output Make sure that the force value is not changed accidentally, i.e. the sliding terminal can be moved easily. In order to prevent this, the head shape of the adjustment screw that moves this sliding terminal is We are diversifying without doing anything.

0003 Specifically, potentiometers used in traditional airflow meters, for example. As shown in FIGS. 8(a), 9(a), and 10(a), the sliding terminal of There are three types of adjustment screws: minus groove type 15, split minus groove type 16, and hexagonal hole type 17. It has a similar head shape, as shown in Fig. 8(b), Fig. 9(b), and Fig. 10(b). Three types of screw fasteners 25 each have a tip that matches the head shape. , 26, 27 were performing the fastening process.

0004

[Problem that the idea aims to solve]

However, with such conventional screw fasteners, the same Multiple tools were required for one task, which was cumbersome. Also, especially screw fasteners If you use an electric screwdriver etc. to drive the Because it takes time and effort, it is necessary to group together a certain amount of the same type, and multiple types It was difficult to fasten similar items together.

[0005] This invention was made to solve such conventional problems, and its purpose is This means that the same tool can be used to fasten multiple types of screws with different head shapes. The object of the present invention is to provide a screw fastener that can perform the following steps.

[0006]

[Means to solve the problem]

In order to achieve the above object, the present invention has a tip that fits with the screw head, and the head In screw fasteners that perform fastening by rotating the parts, the a first distal end portion, and another screw disposed movably in the axial direction on the coaxial outer circumferential portion of the first distal end portion. A second tip that fits into the head of the screw, and the first tip and the second tip at one or more locations. The structure includes a locking means for locking in a fixed position.

[0007]

[Effect]

According to the screw fastener according to the present invention, the screw has a head shape that fits with the first tip. For screw fasteners, the second By locking the tip, it is also possible to have another head shape that fits with the second tip. For screws that are By locking the parts, each fastening process can be performed.

[0008]

【Example】

Hereinafter, embodiments of the present invention will be described based on the drawings.

[0009] FIG. 1 is a perspective view showing an embodiment of the present invention, and its configuration will be explained first.

0010 The first tip 2 protruding from the main body 1 of the screw fastener has a hexagonal prism shape and is open. The other end 2a can be fitted with a hexagonal socket adjustment screw 17 shown in FIG. 10(a). Ru. A second tip 3 is slidably attached to the outer circumference of the first tip 2. Ru. That is, the second tip 3 has a hollow cylindrical shape, and the hollow part is similar to the first tip 3. It has a hexagonal hole shape that is slidably aligned with the outer periphery of the tip portion 2. Furthermore, the first tip One end portion 3a of the second tip portion 3 that is open when attached to the portion 2 is shown in FIG. 9(a). It is formed in a shape that can be fitted with the divided slotted slot type adjustment screw 16, and the shape can also be fitted with the minus groove type adjustment screw 15. Here, the first tip The axes of the second tip 3 attached to the section 2, the first tip 2, and the main body 1 are the same. .

[0011] A locking groove 6 is formed in the second tip portion 3 in parallel with the axial center line, and a locking groove 6 is formed in the second tip portion 3. The pin is inserted into the locking pin hole 8 passing through the first tip 2 and protrudes from the outer peripheral surface of the first tip 2. Since the locking pin 5 is fitted, the second tip 3 is axially aligned with the first tip 2. It is in a state where it can slide up to the length of the locking groove 6 in the center direction. Main body 1 and 2 A locking spring 7 is provided on the outer periphery of the first tip portion 2 between the first tip portion 2 and the tip portion 3 . Since this locking spring 7 always presses the second tip 3, the second tip 3 The one end 3a is usually the open end 2a of the first tip 2, that is, the screw fastener. It stands out from the cutting edge. Also, the second tip 3 is held against the locking spring 7 to hold the main body. When pressed towards the 1 side (in the direction of the arrow), the second tip 3 will close to the main body up to the length of the locking groove 6. 1 side, so that the open end of the first tip 2 is removed from the leading edge of the screw fastener. The portion 2a will be in a protruding state. That is, the locking means 4 in this embodiment is It is composed of a pin 5, a locking groove 6, and a locking spring 7.

0012 In addition, as another locking means, as shown in FIG. 1, two locking pin holes 81 and 82 are provided in the first tip 21, and the locking hole 61 is The locking pin 51 may be inserted into one of the locking pin holes. this In this case, as shown in FIG. 2(a), when fitting into one of the locking pin holes 81, When inserting one end 31a into the other locking pin hole 82 as shown in FIG. 2(b), One end 21a of each end 21 projects from the leading edge of the screw fastener.

[0013] In addition, the screw fastener according to the embodiment of FIG. When used with a general screw tightening device driven by 1, the hexagonal hole shape is slidably aligned with the outer periphery of the first tip portion 2 and inserted to a predetermined depth. A hole 13 and a main body groove 10 formed parallel to the axis are provided, and the insertion hole 13 is 1 Insert the tip 2. Then, a book penetrating through the first tip portion 2 is inserted into the main body groove 10. The body pin 9 is inserted into the body pin hole 12 and protrudes from the outer peripheral surface of the first tip portion 2. Furthermore, the main body spring 11 is installed inside the insertion hole 13. That is, the first The tip 2 is normally in the most protruding state from the main body 1, and when a pressing force is applied, it reaches the maximum It is configured to penetrate into the inside of the main body 1 up to the length of the main body groove 10. In addition, the main body The spring 11 is stronger than the locking spring 7.

[0014] Next, the operation of this embodiment will be explained.

[0015] A screw tightener using an electric screwdriver to tighten the screw fastener according to this example. When used in the device, as shown in Figure 5, a jig (not shown) that is linked to an electric screwdriver (not shown) The main body 1 of the screw fastener connected to the joint shaft can be adjusted using, for example, an air cylinder. from the top surface 14a of the screw head to the end of the main body. It is set at a position where the distance L to the surface 1a is constant. At this time, the main body spring Since locking spring 11 is stronger than locking spring 7, locking spring 7 is first It contracts greatly, and one end 2a of the first tip 2 and one end 3a of the second tip 3 are the same. The first tip 2 is in contact with the top surface 14a of the screw head in a flat plane, and in this state, the first tip 2 is in contact with the top surface 14a of the screw head. It enters inside and contracts the main body spring 11.

[0016] Next, when the main body 1 of the screw fastener is rotated using an electric screwdriver, the first tip 2 and the second tip 3 rotate in conjunction with each other. At this time, the head shape of the adjustment screw is As shown in (a) and (a'), it is a minus groove type 15 or a split minus groove type 16. , the distance L from the top surface of the screw head to the end surface of the main body remains unchanged, and the distance L from the top surface of the screw head to the end surface of the main body remains the same, and the distance 2 tip 3 is fitted with the screw head 14b by the tension of the locking spring 7, and the screw The head 14b is rotated to perform the fastening process. Also, the head shape of the adjustment screw is shown in Figure 7 ( If the hexagonal hole type 17 is used as shown in a), the distance L will not change as shown in Fig. 7(b). The first tip 2 of the sea urchin fits into the screw head 14c by the tension of the main body spring 11. Then, the screw head 14c is rotated to perform the fastening process. Therefore, the screw according to this embodiment The fastener is used, for example, in a multi-axis screw tightening device that performs multiple fastening processes at the same time. In some cases, identification of screw head shapes is required even if there are screws with different head shapes. Fastening processing can be performed at the same time without having to do so.

[0017] In addition, the shapes of the first tip and the second tip are not limited to those in this example, but are as follows. For example, as shown in FIG. 4, the first tip 21 can be fitted with a screw head having a Phillips groove shape. By forming it into a shape, the second tip 31 protrudes as shown in FIG. 4(a). If the first tip 21 is protruding as shown in (b), it will be a minus groove type. It is also possible to make it compatible with the plus groove type.

[0018]

[Effect of the idea]

As explained above, according to the present invention, the same tool can be used with different head shapes. The ability to fasten multiple types of screws eliminates the complexity of work. , productivity improves.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of a screw fastener according to the present invention.

FIG. 2 is an explanatory diagram of another embodiment of the locking means.

3(a) is an external view when the embodiment of FIG. 1 is used in a fastening device using an electric screwdriver, and FIG. 3(b) is a sectional view thereof.

FIG. 4 is an explanatory diagram of another aspect of the first tip portion.

FIG. 5 is a first explanatory diagram of the usage state of the embodiment of FIG. 3;

6 is a second explanatory diagram of the usage state of the embodiment of FIG. 3; FIG.

7 is a third explanatory diagram of the usage state of the embodiment of FIG. 3; FIG.

FIG. 8 is a first explanatory diagram of a conventional example.

FIG. 9 is a second explanatory diagram of a conventional example.

FIG. 10 is a third explanatory diagram of a conventional example.

[Explanation of symbols]

1 Main body 2 First tip 3 Second tip 4 Locking means 5 Locking pin 6 Locking groove 7 Locking spring 8 Locking pin groove 9 Body pin 10 Body groove 11 Main body spring 12 Body pin hole 13 Insertion hole 14 Adjustment screw head 15 Adjustment screw (minus groove type) 16 Adjustment screw (split minus groove type) 17 Adjustment screw (hexagonal hole type)

Claims (1)

[Scope of utility model registration request] Claim 1: A screw fastener that has a tip that fits with a screw head and performs a fastening process by rotating the head, comprising a first tip that fits with one screw head; a second tip that is provided on the coaxial outer circumference of the first tip so as to be movable in the axial direction and that fits with another screw head, and the first tip and the second tip are placed in one or more predetermined positions A screw fastener characterized by comprising a locking means for locking the screw.