JPH0956962A - Bed slide of sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate attachment and detachment of a bed slide by forming a pressing member by a first pressing part bent from the outside of an opening toward the inside of the opening and a second pressing part for energizing the bed slide in the opening direction by the elastic force in the bed slide pressed to a support part by the pressing member. SOLUTION: The bed slide 3 is fitted to an opening 2b of the upper surface 2a of a sewing machine bed, both ends of the lower surface 3b of the bed slide are supported by support parts 2c1 , 2c2 so that the upper surface 3a of the bed slide is flush with the upper surface 2a of the sewing machine bed, and the lower surface 2b of the bed slide is provided with first and second pressing parts 4, 5. the respective pressing parts 4, 5 are formed by plate springs and fixed to the bed slide 3 by screws 6. The free end of the first pressing part 4 is bent by bending parts A, B to be substantially V-shaped, and the bending part C of the forward end of the middle part outside an opening is taken as a first press-contact part 4a pressed to the opening end. The free end of the second pressing part 5 is formed as a circular arc part 5a to be pressed to the back 2b of the sewing machine bed.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a sliding plate of a sewing machine.

[0002]

2. Description of the Related Art Conventionally, as a sliding plate of a sewing machine, those shown in FIGS. 4 to 5 have been known. The sewing machine bed 51 is rotatably supported on the sewing machine table 50 by hinges 52, and is installed so that the sewing machine bed upper surface 51a and the sewing machine table upper surface 50a are flush with each other. The sewing machine bed 51 has an opening portion 53 with one side open, and a pair of support step portions 53a parallel to the inner peripheral side surface of the opening portion 53.
Are formed. The slide plate 54 is supported by the support step portion 53a.

A spring member 55 is fixed to the lower surface 54b of the sliding plate with a screw 56, and two free ends 55a extend in the direction of the support step 53a. At the tip of the free end 55a, the press contact portion 5 that press contacts the back surface 51b of the sewing machine bed
5b are formed. As a result, the sliding plate 54 is fitted into the opening 53 and is fixed by pressure to the support step 53a.

When the sliding plate 54 is removed from the opening 53, the sliding plate 54 is slid in the direction of arrow b and pulled up to be removed. In order to improve the sewing workability and maintain the quality of sewn products,
Sewing machine bed upper surface 51a, sewing machine table upper surface 50a,
The positional relationship is such that the upper surface 54a of the sliding plate is flush with the upper surface 54a. For example, if the upper surface 54a of the sliding plate is higher than the upper surface 50a of the sewing machine table, when the operator feeds the cloth, the hand holding the cloth catches on the sliding plate 54 and the cloth cannot be fed smoothly or the cloth is damaged. May cause the quality of sewn products to drop. Further, although not shown in FIG. 4, the sliding plate upper surface 54a and the sewing machine table upper surface 50 are also provided on the front side of the opening 53, which is open.
The sewing machine table 50 is provided so that a is on the same plane. Therefore, as a practical matter, simply slide the slide plate 54 on the arrow b.
The sewing machine bed 51
It is necessary to pivot the hinge 52 in the a direction around the hinge 52 to incline the sliding plate 54 to a position where it does not contact the sewing machine bed 51, and then slide the sliding plate 54 from the opening 53 in the b direction to remove it. Inclining the body of the sewing machine is a burden on the operator, especially if the woman occupies the majority of the sewing industry.

As a solution to the above drawbacks, there is one as shown in FIG. An elastic piece 60 and an engaging piece 61 are fixed to the lower surface 54b of the sliding plate by screws 56, respectively. The elastic piece 60 is fixed so that the tip of the elastic piece 60 projects outward and presses the lower surface of the bed. Sewing machine bed 51
An elevating rod 62 is provided on the shaft via a spring 62a. The elevating rod 62 has an upper end surface 62b that abuts the spring 62a at the upper end, and an engaging bullet piece 62d having an inclined surface 62c at the lower end. The tip of the engaging piece 61 is engaged with the inclined surface 62c.

When the sliding plate 54 is removed from the opening 53, the upper end surface 62b is pushed downward against the biasing force of the spring 62a, and the tip of the engaging piece 61 is slid off from the inclined surface 62c. Due to the reaction of the elastic piece 60, the sliding plate 54 floats up in an inclined posture on the surface of the sewing machine bed 51 as shown by a virtual line. However, the engagement piece 61 is engaged with the inclined surface 62c of the engagement bullet piece 62d fixed to the elevating rod 62 which is a movable body rather than an immovable body such as a sewing machine bed. Therefore, it is not completely crimped and fixed as in the past. Further, when the vibration generated during the operation of the sewing machine is transmitted to the engaging bullet piece 62d which is an elastic body through the sewing machine bed 51, the vibration is amplified there. This amplified vibration is transmitted to the slide plate 53 via the inclined surface 62c and the engaging piece 61, so that the slide plate 53 shakes more than necessary, which not only deteriorates the workability of sewing, but also causes the sewing work. It may also reduce the quality of the product.

[0007]

DISCLOSURE OF THE INVENTION The present invention provides a sliding plate which can be easily attached and detached without losing the effect of the conventional crimping and fixing, and further without tilting and tilting the sewing machine bed 51 around the hinge 52. The purpose is to do.

[0008]

A sewing machine bed that opens upward and has an opening having at least a pair of facing inner sides facing each other, and the facing inner side that fits into the opening shape of the opening. And a sliding plate supported by a supporting portion arranged in the center of the sewing machine, and the center of the sliding plate is fixed to the lower surface of the sliding plate and is formed of an elastic member. Both free ends are elastically pressed against the lower surface of the sewing machine bed in the opposite inner side direction. A first crimping member that crimps the slide plate to the support portion, the crimping member being first bent downward inside the opening, then bent upward, and being pressed against the back surface of the sewing machine bed at the tip thereof.
A first pressure-bonding portion having a pressure-contacting portion and a second pressure-bonding portion that is formed on an arc and abuts on the backside of the sewing machine bed at the tip of the pressure-bonding portion. The part is first bent downwards inside the opening, then inside the opening outwards and upwards of the opening to form an intermediate part and the first press contact part engages the end of the opening. The opening is bent from the outside to the inside.

By pressing the intermediate portion provided on the first crimping portion from the outside of the opening toward the inside, the first press contact portion is separated from the end of the opening toward the inside of the opening. Here, since the lower surface of the slide plate is always pressed upward by the pushing-up means, when the first press contact portion is separated from the opening end toward the inside of the opening, the slide plate causes the second press contact portion to move toward the base end. And it is jumped up.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION One embodiment of the present invention is shown in FIGS.
This will be described below. 1 is a sewing machine table. Reference numeral 2 denotes a sewing machine bed, and the sewing machine bed upper surface 2a is arranged so as to be flush with the sewing machine table upper surface 1a. or,
An opening 2b for installing a sliding plate 3 to be described later is formed, and supporting portions 2c _1, 2c are formed on the inner circumference of the opening 2b.
₂ is formed.

[0011] sliding plate 3 sliding plate upper surface 3a is the bed upper surface 2a respectively the support portion 2c 1 sliding plate lower surface 3b at both ends so as to be flush _with, 2c together fitted into the opening 2b
Supported by ₂ . Further, the lower surface 3b of the sliding plate has first and second crimping portions 4, 5. The first and second crimping portions 4 and 5 of the present embodiment are formed of a leaf spring as a single elastic member, and fixed by screws 6. But,
The leaf spring may be separated and the first and second crimping portions 4 and 5 may be separated.

Here, the first and second crimping portions 4 and 5 will be described in detail. The free end of the first crimping portion 4 is first bent at a bending portion A in a substantially vertical downward direction inside the opening so as to generate an elastic force, and then inside the opening, this time outside the opening and upward. An intermediate portion that is bent at the bending portion B is formed in the back side of the sewing machine bed, and has a substantially V shape. Further, the bent portion C at the tip of the intermediate portion outside the opening is bent so that the tip is located inside the opening to form a first pressure contact portion 4a that is in pressure contact with the end of the opening. Here, the intermediate portion has a substantially linear shape, and the bent portion C is the leftmost end portion of the first crimp portion 4.

The first pressure contact portion 4a is urged in the direction of arrow c by the action of the bent portions A and B and is pressed against the opening end 2d ₁ of the back surface 2d of the sewing machine bed. An intermediate portion 4b is provided near the left center of the V-shape, and the intermediate portion 4b is directed from the outer side of the opening toward the inner side (arrow d direction) against the biasing force of the bent portion B. The first pressure contact portion 4a (shown by a solid line) at a position where it is pressed against the opening end 2d _{1 by} being pressed by the first pressure contact portion 4a comes inward from one side 2b ₁ of the opening 2b. It can be moved to a position (indicated by a chain line). That is, when the sliding plate 3 is in the first position, the first press contact portion 4a of the sliding plate 3 moves upward and the opening end 2d ₁
It is suppressed by being pressed into contact with, but is released when in the second position.

The free end of the second crimping portion 5 comprises an arcuate portion 5a having a gentle arcuate shape so as to generate an elastic force, and the tip of this arcuate portion 5a has a second pressure contact portion 5b. ing. The second pressure contact portion 5b is in pressure contact with the back surface 2d of the sewing machine bed outside the side surface 3c of the sliding plate. As a result, when the first pressure contact portion 4a is in pressure contact with the opening end 2d ₁ , the sliding plate 3 is supported by the support portion 2 due to the elastic deformation of the arc portion 5a.
is crimped to c _2, also the first contact portion 4a to press the intermediate portion 4b in a state that has moved to the second position, since the sliding plate 3 is opened with respect to the traveling in the upward direction, the arc Of the sliding plate lower surface 3 by the force of the circular arc portion 5a elastically deformed so that the circular arc expands to return to the original state so that the circular arc becomes smaller.
b is pushed upward, and the slide plate 3 is inclined with the side face 3c of the slide plate as a fulcrum.

The above-described structure produces the following operation. When the sliding plate 3 is attached to the opening 2b, the first pressure contact portion 4a is in pressure contact with the opening end 2d ₁ of the bottom surface 2d of the sewing machine bed, and the first crimp portion 4 includes the bent portion A and the bent portion. B is elastically deformed. The second pressure contact portion 5b is in pressure contact with the lower surface 2d of the sewing machine bed, and the second pressure contact portion 5 is elastically deformed at the arc portion 5a. Therefore, both ends of the bottom surface 3b of the slide plate are securely fixed to the supporting portions 2c _{1 and} 2c ₂ , respectively.

To remove the sliding plate 3 from the opening 2b, the first
The intermediate portion 4b provided on the crimping portion 4 of the
Press in the direction of the mark d to open the end of the opening on the back side 2d of the sewing machine bed.
2d ₁The first pressure contact portion 4a located at a position to elastically pressure contact with
By moving one of the openings 2b corresponding to one side of the sliding plate 3
Side 2b₁Move to a position that is more inward. Then the yen
Of the second crimping portion 5 that has been elastically deformed so that the arc expands.
The circular arc portion 5a is about to return to its original state, and the circular arc becomes smaller.
You. As a result, the second press contact portion 5b is
The surface 2d is slid inward and the sliding plate lower surface 3b is moved upward.
Push up and tilt the slide plate 3 with the side face 3c of the slide plate as the fulcrum
Let it.

Therefore, when the sliding plate 3 is removed, the sewing machine bed 2 can be easily removed without inclining it with respect to the sewing machine table 1. In the first embodiment, the intermediate portion 4b was directly pressed, but one end is installed in the vicinity of the intermediate portion 4b via the link mechanism and the other end is provided on the sewing machine table upper surface 1
It may be installed at a position where the operator can easily operate it, such as a or the sewing machine bed upper surface 2a.

[0018]

The first crimping portion is first bent downward inside the opening, and then outwardly and upwardly inside the opening to form an intermediate portion and the first press-contact portion. Is bent from the outside of the opening to the inside of the opening so as to engage with the end of the opening. Therefore, by pressing the intermediate portion from the outside to the inside of the opening, the first press contact portion opens. The sliding plate is separated from the end of the sliding member toward the inside of the opening, and the elastic force of the second crimping portion causes the sliding plate to flip upward with one side of the sliding plate as the base end.

Therefore, the sliding plate can be securely pressure-bonded to the sewing machine bed, and the sliding plate can be easily removed without tilting the sewing machine bed when removing. Furthermore, this allows the upper surfaces of the sewing machine table, the sewing machine bed, and the sliding plate to be flush with each other, so that when the cloth is fed by hand, the operator's hands do not get caught on the sewing machine table and the sewing work is performed smoothly. And work efficiency is improved.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment.

FIG. 2 is a cross-sectional view of the sliding plate of the embodiment mounted on the opening.

FIG. 3 is a cross-sectional view of a state where the sliding plate is flipped up by pressing the middle portion of the embodiment.

4A is a perspective view of a conventional sliding plate, and FIG. 4B is a front view of a conventional sliding plate.

FIG. 5 is a front view of a conventional sliding plate.

[Explanation of symbols]

 1 ・ ・ ・ ・ Sewing machine table 2 ・ ・ ・ ・ Sewing machine bed 3 ・ ・ ・ ・ ・ ・ Sliding plate 4 ・ ・ ・ ・ ・ ・ 1st crimping part 4a ・ ・ ・ ・ ・ ・ 1st press contact part 4b ・ ・ ・ ・ ・ ・ Middle part 5 ・ ・ ・ ・ ・ ・ Second crimping part 5a ・ ・ ・ ・ ・ ・ Arc part 5b ・ ・ ・ ・ ・ ・ Second pressure contact part

Claims (1)

[Claims] 1. A sewing machine bed which is open to the upper side and which has an opening having at least a pair of facing inner sides facing each other, and a sewing machine bed which is fitted to the opening shape of the opening and is arranged on the facing inner side. The sliding plate is supported by the supporting part, and the center of the sliding plate is fixed to the lower surface of the sliding plate and is formed of an elastic member. Both free ends are elastically pressed against the lower surface of the sewing machine bed in the opposite inner side direction to move the sliding plate. A pressure-bonding member for pressure-bonding to the support portion, wherein the pressure-bonding member is first bent downward inside the opening, then bent upward, and has a first pressure-contacting portion at the tip that pressure-contacts the back surface of the sewing machine bed. In a sliding plate of a sewing machine, which comprises a first crimping portion and a second crimping portion which is formed on an arc and is in contact with the back surface of the sewing machine bed at the tip of the sliding plate, the first crimping portion is first inside the opening. Fold downwards It is,
Then, inside the opening is bent outward and upward to form an intermediate portion, and the first press contact portion is bent from the outside of the opening to the inside of the opening so as to engage with the end of the opening. The sliding plate is always closed against the elastic force of the second crimping portion, the middle portion is pressed from the outside of the opening toward the inside, and the first press-contact portion is opened. A sliding plate for a sewing machine, characterized in that the sliding plate is opened by the elastic force of the second crimping part by being separated from the end of the part inward of the opening.