JPH0328874Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a sewing machine that is rotatably supported on a sewing machine frame and can be stored in a pocket surrounded by a bed, a vertical body, and a sewing machine arm when not in use. This invention relates to a spool pin device.

Prior Art In many sewing machines that are housed in a case, such as a portable sewing machine, the spool pin device that protrudes above or to the side of the sewing machine frame can be folded up when stored to prevent the case from becoming bulky. Among these, a recently developed one is one in which the spool pin device, which is pivoted to the sewing machine frame, can be housed in a pocket surrounded by the bed, the vertical body, and the sewing machine arm. No. 20383).

Problems that the invention aims to solve When installing the spool pin device on a sewing machine so that it can be stored in the pocket, it is necessary to attach the spool pin device to the sewing machine so that it can be stored in the pocket during use. It is desirable to protrude to substantially narrow the working surface so as not to interfere with sewing work. However, as shown in FIG. 4, in a device in which the spool pin faces the head side, part or most of the device tends to protrude into the pocket during use. As shown in Figure 5, if the rotation radius of the spool pin is made long, the entire device can be hidden behind the vertical body and not protrude into the pocket. Requires a pocket of space,
Not applicable to small sewing machines.

Means for solving the problem This idea is designed so that even if the rotation radius of the spool pin is large, the storage space in the pocket when not in use is small. A guide means is provided to pivotally support a pin supporting the rod device so as to be rotatable and slidable in the cloth feeding direction, and when not in use, the spool pin device is rotated from the sewing machine arm or the vertical body and then slid along the guide means. It was meant to be tucked into one's pocket.

Typical examples of the guide means include long grooves formed directly on the sewing machine frame or on a bracket fixed to the sewing machine frame.

As mentioned above, the spool pin device can be switched between the use position and the non-use position where it is stored in the pocket, but in order to prevent accidental movement in each position, it is preferable to switch the spool pin device to each position. Holding means made of, for example, a magnet is provided at each position in order to restrain and maintain that state.

Embodiment A hook-shaped fitting groove 3 is formed behind the side surface of the vertical body 1 on the side of the pocket 2, and a housing-shaped bracket 4, which is also hook-shaped, is fitted into the groove 3, and a set screw 5 is inserted into the fitting groove 3. It is fastened. The bracket 4 has slots 6 at the top and bottom, and one end of an arm 7 is rotatably and slidably supported by a pin 8 inserted through the slot 6. The arm 7 has a spool pin 11 protruding from the other free end thereof, which faces the head 9 when it is assembled to the vertical body part 1 and is in the use position (see Fig. 1).
In addition, a protruding piece 12 is provided at the end on the pin side, which is joined to the side end surface of the bracket 4 and forms a pure angle with the arm 7. The end face is used as a guide and the thread spool pin is slidably contacted with the end face as a guide, so that the spool pin device can be moved forward and backward without rotating. A magnet 13 is attached to the end of the bracket on the back side of the vertical body. When the arm 7 is pulled out until the pin 8 hits the slot end and then rotated horizontally, it attracts to the side of the arm, and the spool pin device is activated. It is designed to be held in the position of use. In this state, the spool pin 11 is retreated from the pocket, hidden behind the vertical barrel 1, and faces toward the head, as shown by the dashed line in FIG.

This device is constructed as described above, and when in use, the spool pin device is pulled out until the pin 8 hits the end of the slot 6, and after the pin 8 hits the end of the slot, it is rotated clockwise in Fig. 3, and the magnet 13 to be adsorbed. At this time, the device and the spool 1 attached to it
5 is hidden behind the upright body part 1 and retreats from the pocket as described above. When storing the spool pin device in a pocket when not in use, the device is rotated counterclockwise in FIG. 3, contrary to the above, until the protrusion 12 engages with the end surface on the bracket side. The projecting piece 12 engages with the end face of the bracket to prevent further rotation, and with the arm 7 forming an acute angle with the bracket 4, the device is pushed in until the pin 8 abuts the other end of the slot. At this time, as shown by the solid line in FIG. 3, the entire device including the spool 15 fits into the pocket.

Effects of the invention As described above, when the spool pin device of this invention is stored, it is pushed in at an angle against the side of the vertical body on the pocket side, so even if the rotation radius of the device is long, The amount that sticks out inside is reduced, and therefore less space is required in the pocket for storing the spool pin device, making it possible to apply it to small-sized sewing machines.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the sewing machine seen from behind, Figure 2 is an exploded perspective view of the spool pin device, Figure 3 is a diagram showing the spool pin device when it is stored and in use, and Figure 4 is a conventional example. FIG. 5 is an explanatory diagram of the same. 1... Vertical body part, 2... Bosom, 3... Fitting groove, 4...
...Bracket, 6...Slot, 7...Arm,
8...Pin, 9...Head, 11...Spool pin, 1
2... protrusion, 13... magnet.

Claims (1)

[Claims for Utility Model Registration] (1) Rotatably supported by a pin on the sewing machine arm or vertical body, and when not in use, can be rotated from a use position protruding laterally from the sewing machine arm or vertical body. In a spool pin device of a sewing machine stored in a pocket surrounded by a bed, a vertical body part, and a sewing machine arm, the above-mentioned pin is pivotably supported on the sewing machine arm or vertical body part so as to be rotatable and slidable in the cloth feeding direction. The spool pin device is provided with a guide means, and when not in use, the spool pin device, which is in a use position, is pushed along the guide means after turning and stored in a pocket. (2) The guide means is a long groove formed directly on the sewing machine frame or on a bracket fixed to the sewing machine frame, the first registered claim.
The spool pin device described in Section 1. (3) The spool pin device according to claim 1, further comprising a holding means for restraining and holding the spool pin device in a use position and a non-use position. (4) The spool pin device according to claim 3, wherein the holding means is a magnet.