JPS6232777Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an improvement of a box screwdriver, which makes it easier to tighten a nut to a bearing of a volume, switch, etc.

Structure of the conventional example and its problems As shown in FIG. 1, the conventional box driver has a nut 5 inserted in advance into the shaft 6a of the volume 6 attached to the board 7, and is provided in the box driver main body 1 so as to be able to move in and out. Align the inner periphery of the tip 1a of the box driver main body 1 with the outer periphery of the nut 5, and press it against the bearing 6b of the volume 6 while pressing it with the tip 2a of the guide member 2, which is always biased in the protruding direction by the compression coil spring 4. It is something to tighten. In this case, the nut 5 must be fitted onto the shaft 6a of the volume 6 in advance, and the box driver main body 1 must be rotated while being held with one hand, resulting in poor workability.

Purpose of the invention The present invention solves these conventional problems by making it possible to easily tighten a nut without having to fit the nut to the component in advance.

Structure of the invention The present invention provides a guide holding rod in the center hole of a hollow guide member inserted into and out of the box body, and by engaging the guide holding rod with the center hole of the nut, the nut can be tightened. This allows the nut to be tightened without having to fit it to the component side each time.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 2 to 4.

In FIGS. 2 to 4, reference numerals 10 and 11 are hollow box driver bodies, and the tip of the body 10 has a recess 10a that fits around the outer periphery of the nut.
The rear end of the main body 11 has a connecting part 11a connected to a rotational drive part, and these two box driver main bodies 10 and 11 are integrally connected by a threaded part 10b. 10d is a center hole of the box driver bodies 10, 11; 12 is a hollow guide member that is inserted into and out of the driver center hole 10d and has a tapered portion 12a at its tip that engages with the center hole of the nut; Guide member 1
This is a guide holding rod for a nut that is inserted into and out of the center hole of No. 2. The guide member 12 and guide holding rod 13 are locked to a rear part 10c provided inside the box driver bodies 10, 11, and are prevented from moving outward at that position. 14 is a hollow pipe that urges the guide member 12 to the outside; 15;
16 is a compression coil spring that urges the guide and holding rod 13 to the outside, and 17 is a compression coil spring that urges the guide member 12 to the outside. In addition, 18 is a nut, 19 is a volume, 19a, 19b is its bearing and shaft, 2
0 is a board on which the volume 19 is attached.

In the above example, the method of use will be explained in the second example.
This will be explained with reference to FIG. When the center hole of the nut 18 is fitted into the guide holding rod 13 and the box driver bodies 10, 11 are moved forward, the guide holding rod 13 is fitted onto the shaft 19b of the volume 19 as shown in FIG.
contact, and the compression coil spring 16 is compressed. As a result, the guide holding rod 13 retreats, the nut 18 is pushed by the guide member 12, and is transferred from the guide holding rod 13 to the volume shaft 19b. At the same time as the nut 18 is transferred, pressurized rotation is applied to the box driver bodies 10 and 11, and the tip 12a of the guide member 12 is rotated.
The center hole of the nut 18 and the shaft 19b are guided by this. Then, the guide member 12 retreats, the two-compression coil spring 17 is compressed, and the center hole of the nut 18 is fitted into the threaded portion 19a, so that the threaded surfaces engage with each other. After that, further box driver body 1
When pressurized rotation is applied to 0 and 11, the nut 18 is eventually tightened on the threaded portion 19a of the volume 19,
Attachment of the volume 19 to the board 20 is completed.

Effects of the Invention As described above, according to the box driver of the present invention, when tightening a nut to the bearing of a component such as a volume control or a switch, the nut can be tightened without having to fit the nut to the component in advance. Since it is not possible to perform
Its practical effects are significant.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a conventional box driver.
Fig. 2 is a cross-sectional view of a box driver according to an embodiment of the present invention, Fig. 3 is a cross-sectional view showing the box driver of the present invention in a tightening state, and Fig. 4 is an external perspective view of the main parts thereof. . 10...Box driver body, 10a...
Nut fitting recess, 10b...screw part for connection,
DESCRIPTION OF SYMBOLS 11... Box driver main body, 11a... Connection part with rotational drive part, 12... Guide member, 12
a... Taper portion, 13... Guide holding rod, 14...
...Hollow pipe, 15...Bar material, 16...Compression coil spring, 17...Compression coil spring, 18...Nut, 19...Volume, 19a...Volume bearing, 19b...Volume shaft, 20...Substrate.

Claims (1)

[Scope of utility model claims] A box driver body having a nut fitting recess that fits on the outer periphery of the nut at the tip and a connecting portion connected to the rotational drive unit at the rear end, and a box driver body that is inserted into and out of the center hole of the box driver body, A hollow guide member having a tapered portion at its tip that fits into the center hole of a nut, and a guide that is inserted into and out of the center hole of the hollow guide member and whose tip engages with the center hole of the nut. A box driver comprising: a holding rod; and means disposed in a center hole of the box driver main body to always bias the guide member and guide holding rod in a protruding direction.