JPS6337030Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a device for attaching and detaching a sewing machine auxiliary table, and is a device that increases the area of the table on which the sewing machine is placed according to the size of the sewing machine. used for.

(Prior Art) As a conventional sewing machine auxiliary table attaching/detaching device of this type, Umono is known as disclosed in Japanese Utility Model Publication No. 13513/1983. This is provided with a pair of locking shafts movable in the axial direction on the bottom surface of one end of the auxiliary table.
A locking hole is provided on the side of the sewing machine bed so that the locking shaft can be connected to and removed from the locking hole. Furthermore, one end of the wire is connected to the locking shaft via an arm, and a support leg is movably held on the lower surface of the other end of the auxiliary table, and a cam surface is formed to engage and disengage the other end of the wire. In this configuration, the auxiliary table is held on the sewing machine bed at a position where the locking shaft and the locking hole engage, and by raising the support leg, the cam surface is engaged with the other end of the wire and the wire is pulled. The auxiliary table was fixed to the sewing machine bed by tensioning the sewing machine and moving the locking shaft through the arm to engage the locking hole.

(Problem to be solved by the invention) However, with the above-mentioned auxiliary table attaching/detaching device for the sewing machine, the fixing force of the auxiliary table depends on the engagement between the other end of the wire and the cam surface, so the fixing force is If the cam surface is weak and the other end of the wire is disengaged due to external impact, etc., the engagement between the locking shaft and the locking hole will be disengaged, and the auxiliary table may come off from the sewing machine bed. Due to heavy use, the cam surface is severely worn, and the fixing force weakens after long-term use.As a result, there is a risk that the locking shaft and the locking hole may disengage, and the auxiliary table may come off from the sewing machine bed.

Therefore, the technical object of the present invention is to eliminate the above-mentioned drawbacks and to ensure that the auxiliary table is securely and firmly fixed to the sewing machine bed.

[Structure of the idea]

(Means for Solving the Problems) The technical means taken in the present invention to solve the above-mentioned technical problems includes an auxiliary table, and an auxiliary table that is fixed to the auxiliary table and extends outward from one end of the auxiliary table. A rigid member having an extending portion, a table body, and a substantially U fixed to the table body so as to form a predetermined gap between the table body and the table body.
It has a letter-shaped stopper and a screw that is screwed into the stopper and can protrude into the gap.

(Operation) The above technical means operates as follows. The auxiliary table is fixed to the table main body by inserting a rigid member into the gap, causing the screw to spiral so that the screw protrudes into the gap, and pressing and clamping the rigid member against the table main body. As a result, the fixing force of the auxiliary table is dependent on the pressure and clamping between the screw and the table body, so the fixing force is strong, and even with frequent use, there is little wear on the screws, and there is no problem even with long-term use. Its fixed power will never weaken. Therefore, the auxiliary table can be securely and firmly fixed to the sewing machine bed.

(Example) A first example of the device of the present invention will be described based on FIGS. 1 to 3.

In the figure, reference numeral 1 denotes a table body, which is provided with an opening 2 for receiving a sewing machine bed.

3 is a leg, and above the leg, a foot portion 3a that directly receives the load of the table body, and a wide recessed portion 3b are formed.
A support leg member 3' having a convex cross section 3c is fixed to the back surface of the table body 1 with a screw 4, with the cross section 3c being engaged with the upper part of the leg. Reference numeral 5 denotes an auxiliary table, and on the lower surface of the auxiliary table 5, rigid members 6 (two in the illustrated example) extend horizontally outward from the end surface of the auxiliary table 6a and are fixed with screws 7.

Reference numeral 8 denotes a fastener fixed to the support leg member 3' by appropriate means, into which a screw 9 is screwed.

Thus, the recess 3 formed in the support leg member 3'
The depth b and the gap formed between the upper surface of the fastener 8 and the back surface of the table main body 1 are approximately the same amount, and are slightly larger than the thickness of the extending portion 6a of the rigid member 6.

When using the auxiliary table 5 with the device of the present invention,
The extending portion 6a of the rigid member 6 is inserted into the lower surface of the table main body 1 through the wide recess 3b of the support leg member and the gap 8a of the fastener, and the respective ends of the table main body and the auxiliary table as described above are connected. Let's meet.

Then, when the screws 9 are tightened, the auxiliary table 5 is firmly connected and fixed to the table body 1.

When the auxiliary table is not required, screw 9
By loosening the auxiliary table and pulling the auxiliary table apart, it can be easily removed and only the table body can be used.

4 and 5 show a second embodiment.

That is, without fixing the fastener 18 to the leg,
It is attached to the bottom surface of the table body 1.

Therefore, the mounting position is not limited to the legs as in the first embodiment, but can also be mounted toward the front or rear of the table body, or even to the right side. This allows the attachment arrangement of the auxiliary table 5 to the table main body 1 to be varied in various ways.

Incidentally, if a rigid member made of steel or alloy steel is used, the auxiliary table can perform its function satisfactorily without sagging in response to the load that the auxiliary table receives during normal sewing.

[Effect of idea]

As a means for attaching the auxiliary table, a method as shown in FIG. 6 is also known.

That is, the rigid member 6 is fixed to the auxiliary table 5 with wood screws 7', and its outwardly extending portion is passed through the recess of the support leg member 3' and fastened to the table body 1 with wood screws 7''. According to this method, both table ends can be closely connected and connected, and the auxiliary table 5 can be removed by removing the wood screws 7''. However, this operation is extremely troublesome, and repeated tightening and loosening of the wood screws can damage the wood of the table.
It cannot withstand long-term use.

The present invention provides an auxiliary table, a rigid member fixed to the auxiliary table and having an extension portion extending outward from one end of the auxiliary table, a table body, and a rigid member between the table body and the table body. a substantially U-shaped stopper fixed to form a predetermined gap, and a screw that is screwed into the stopper and can protrude into the gap, and the rigid member is inserted into the gap; By making the screw spiral, the screw protrudes into the gap, the rigid member is pressed and held by the table body, and the auxiliary table is fixed to the table body, thereby configuring an auxiliary table attaching/detaching device for the sewing machine. The auxiliary table can be securely and firmly fixed without the above-mentioned problems. Furthermore, since the structure is simple, it is easy to assemble and is advantageous in terms of cost.

[Brief explanation of the drawing]

Fig. 1 is a front explanatory view of the configuration of the first embodiment of the device of the present invention, Fig. 2 is a side view of Fig. 1, Fig. 3 is a sectional view taken along line A-A in Fig. 2, and Fig. 4 is a diagram showing the second embodiment. An explanatory cross-sectional view of an example, FIG. 5 is an explanatory cross-sectional view taken along the line B--B in FIG. 4, and FIG. 6 is an explanatory cross-sectional view of a conventional device. 1... Table main body, 3... Legs, 3'... Support leg members, 5... Auxiliary table, 6... Rigid members,
6a... Extension portion, 8, 18... Fastener.

Claims (1)

[Scope of utility model registration request] a rigid member fixed to the auxiliary table and having an extension extending outward from one end of the auxiliary table; a table body; a substantially U-shaped fastener fixed to the table body so as to form a predetermined gap between the table body and the rigid member; and a screw screwed into the fastener and capable of protruding into the gap, the rigid member being inserted into the gap;
The auxiliary table attachment/detachment device for a sewing machine has a screw that is screwed to project into the gap and press and clamp the rigid member against the table body, thereby fixing the auxiliary table to the table body.