JP6335421B2 - Sewing machine with flap cover - Google Patents

Description

  The present invention relates to a sewing machine provided with a flap cover that covers the sewing machine by opening and closing. When not in use, the flap cover is closed to prevent entry of dust and the like, and the appearance is made into a compact case. The present invention relates to a sewing machine having a flap cover that can start work quickly without preparation work.

The cover that covers the sewing machine is divided into a cover that covers the front side of the sewing machine and a cover that covers the back side of the sewing machine, and the two are assembled to form a sewing machine cover. In some cases, the notch portion of the removed front side cover is fitted to the bed portion of the sewing machine body to form an auxiliary table (see, for example, Patent Document 1).
The sewing machine cover having such a divided case has an advantage that there is no hassle of taking out a heavy sewing machine body from the inside, unlike a back-type sewing machine cover that houses the entire sewing machine.

Japanese Patent Laid-Open No. 10-201981

However, even in such a divided case type sewing machine cover, the preparation work for removing and assembling each divided case is troublesome.
In the sewing machine cover described in Patent Document 1, the rear cover 11 and the front cover 12 are detachably assembled by a hinge mechanism at the upper end, and the hinge mechanism includes the arc claw 11 a of the rear cover 11 and the front cover 12. The hook 14a is anchored to the arc claw 11a with the lower end side of the front cover 12 lifted, and when the front cover 12 is lowered, the hook 14a is fitted to the arc claw 11a, and the machine cover Can be assembled.
Even when the sewing machine cover is removed, it is necessary to perform the opposite work, which is extremely troublesome.

When the front cover 12 is used as an auxiliary table, the accessory box 20 is removed from the sewing machine body, the lid member 15 is removed from the front cover 12, the recess 16 is fitted to the lower arm 3, and the claw There is a problem that this requires troublesome work of engaging 19 with the fitting hole 1b of the sewing machine body.
An object of the present invention is to solve the above-mentioned problems, and does not require a troublesome preparatory work in using a sewing machine. The cover can be opened quickly by a simple switch operation, and the cover can be used. To provide a sewing machine having a cover that can form a case-like outer peripheral surface integrally with a sewing machine body when closed to prevent entry of dust and the like into an opening and have a compact and excellent appearance. With the goal.

In order to solve the above-described problems, the present invention provides a sewing machine having a flap cover, a bed part having a bed surface formed on the upper part, a leg pillar part standing from the bed part, and a leg pillar part. A sewing machine main body comprising an arm part extending horizontally across the opening above the bed part , and rotating around a rotation axis with respect to the bed part of the sewing machine main body via a speed suppressing means. A front flap cover that opens and closes and covers a front surface of the sewing machine main body, a back flap cover that covers a rear surface of the sewing machine main body, and a side surface flap cover that covers a side surface opposite to the leg column of the sewing machine main body. consists of a cover member for covering the opening, locking and biasing means for biasing said each flap covers each opening direction, each of said flap cover against the biasing force of the biasing means to the sewing machine body Stop means and switch means connected to the locking means via connecting means, and the biasing means is a vertical plane in which the center of gravity of each flap cover passes through the rotation axis of each flap cover. The speed restraining means is adjusted so as to have an urging force to rotate until it comes outside, and the locking means is released, and each flap cover urged by the urging means is caused by its own weight. The flaps are controlled so as to suppress the rotation speed of the flap covers when opened, and not to operate while the biasing means are activated and the flap covers are biased in the opening direction. inoperative region provided in the cover, by operating said switching means, and a closed condition for retaining the engagement of said to the sewing machine body of the flap cover by the locking means, said locking means Release and can be switched to an open state to release the respective flap cover, wherein in the closed state and the outer peripheral surface of the cover member and the sewing machine body and forming an outer peripheral surface of the shaped case together Adopt the configuration.

Specific embodiments of the sewing machine provided with a flap cover, when the the front flap cover and the rear flap cover is locked to the sewing machine body by the locking means, wherein the front flap cover and the back flap cover the side flap cover conjunction with linking mechanism, the structure is characterized in that for holding the cover body in a closed state and, when the side flap cover Ru is locked to the sewing machine body by the locking means , wherein the side flaps cover the front flap cover and the rear flap cover conjunction with linking mechanism, the cover body to adopt a configuration wherein the holding closed.

As a further specific embodiment of the sewing machine having a flap cover, the connecting means includes an adjusting means for simultaneously opening two or more flap covers locked to the sewing machine body. Further, a configuration is adopted in which a cloth guide surface is formed on the inner side of the front flap cover. The cloth guide surface gently slopes down from the same height as the bed surface in the open state.

Sewing machine provided with a flap cover of the present invention, each flap cover for covering the opening of the opening and closing sewing machine body by rotating through a speed reduction means about a pivot axis relative to the bed of the sewing machine body, There are provided biasing means biased in the opening direction, locking means for locking each flap cover to the sewing machine main body, and switch means connected to the locking means. The center of gravity is adjusted so as to have an urging force to rotate until it comes to the outside of the vertical plane passing through the rotation axis of each flap cover, and the speed suppressing means is released by the urging means by releasing the locking means. When the biased flap covers are released by their own weight , the flap cover is released from being locked to the sewing machine main body only by operating the switch means by suppressing the rotation speed. , with The center of gravity is rotated rapidly until the outside of the vertical plane passing through the pivot axis of the flap cover by the urging force of the means, then thus accelerated flap cover for the own gravity is decelerated by the speed reduction unit, gently stop In addition, the flap cover is opened more reliably and quickly by providing a non-operation area where the speed suppressing means does not operate while the urging means is operating, while suppressing noise and impact . The work can be started quickly, and if each flap cover is closed, an outer peripheral surface integrated with the sewing machine main body can be formed to prevent the entry of dust and the like into the opening and to improve the appearance.

Further, according to the embodiment in which the linkage means for locking two or one of the three flap covers is provided, the number of locking means for locking the flap cover to the sewing machine main body is reduced and the transmission is performed. The mechanism can be simplified.
Furthermore, in the embodiment in which the cloth guide surface that gently slopes and descends from the same height as the bed surface in the open state is formed inside the front flap cover, the cloth guide surface serves as an auxiliary table for cloth feeding or the like. It can play an important role and can perform sewing work smoothly.

It is a perspective view which shows the closed state of the cover body in the Example of the sewing machine of this invention. It is a perspective view which shows the open state of the cover body in the Example of the sewing machine of this invention. It is a figure which shows the open state of a cover body, and is the perspective view which removed the guide member. It is the perspective view which decomposed | disassembled the upper part vicinity of the auxiliary floor part, and is explanatory drawing at the time of attaching a damper to a flap cover rotating shaft. It is a figure explaining the state by which the front flap cover is attached to the flap cover rotating shaft via the damper, (a) is AA sectional drawing of FIG. 2, (b) is BB of FIG. It is sectional drawing. It is a figure explaining the attachment state of a flap spring, (a) is a figure which shows the open state in CC cross section of FIG. 2, (b) is a figure which shows the closed state in the same cross section. It is a figure explaining the latching means which latches a front flap cover to a sewing machine main part, (a) is a perspective view of the upper side vicinity of a front flap cover, (b) is a principal part enlarged view, (c) is required. It is a top view of a part. It is a figure explaining the latching means which latches a back flap cover to a sewing machine main part, (a) is a perspective view of the upper side vicinity of a back flap cover, (b) is a principal part enlarged view, (c) is required. It is a top view of a part. It is a figure explaining the connection means for latching a side surface flap cover to another flap cover, (a) is a perspective view which shows the state just before becoming a closed state, (b) is a principal part enlarged view. It is a figure explaining a switch, (a) is a perspective view in a closed state, (b) is a principal part enlarged view. It is a figure explaining the power transmission mechanism from a switch to a latching means, (a) is the figure which looked at this power transmission mechanism (with the roof part turned over), (b) is a figure of (a) of FIG. FIG. It is a figure which exploded and shows a transmission mechanism from a switch to a locking means, and is a perspective view seen from the lower surface (with a roof part turned over). It is a figure explaining the modified example which changed the aspect of the switch, (a) is a perspective view of the switch in a closed state, (b) is a perspective view of the switch in an open state.

  Next, a sewing machine provided with a flap cover of the present invention will be described with reference to the drawings showing examples.

1 and 2, M is a sewing machine main body, and C is a cover body. The sewing machine main body M is provided with a bed portion 1 having a bed surface 1a at an upper portion, and an arm portion 3 rising from the bed portion 1 at an upper portion. It consists of a pedestal 2.
The arm portion 3 extends horizontally above the bed portion 1 with an opening S therebetween, and a roof portion 4 that houses a transmission mechanism (to be described later) is integrally attached to the upper portion of the arm portion 3.
Reference numeral 5 denotes a handle pivotally attached to the sewing machine main body M, and reference numeral 6 denotes an operation unit provided on the front surface of the sewing machine main body M.

As shown in FIGS. 1 to 3, the cover body C is provided with a U-shaped auxiliary floor portion 10 around the bed portion 1 of the sewing machine main body M so as to surround it except for the pedestal portion 2, and its upper end. A front flap cover 12, a back flap cover 13, and a side flap cover 14 are rotatably attached to the portion 11 so as to cover the front surface, the rear surface, and the side surface opposite to the pedestal portion of the sewing machine body M, respectively. .
As shown in FIG. 1, when the flap covers 12, 13, and 14 are closed, the outer peripheral surface of the cover body C is integrated with that of the sewing machine body M, and the whole has a case-like appearance. It is possible to prevent dust and dust from entering the part S, the operation part 6 and the like.

As shown in FIGS. 2 and 3, on the inner side of the front flap cover 12, the height of the bed surface 1a is continuous with the upper surface of the upper end portion 11 of the auxiliary floor portion 10 formed at the same height as the bed surface 1a. A guide member 15 having a cloth guide surface gently inclined downward is attached, and an accessory storage case 16 is stored in a space between the front flap cover 12 and the guide member 15 so that the accessory storage case 16 can be pulled out. .
In the present embodiment, the cover body C is provided with the auxiliary floor portion 10 having the upper surface of the upper end 11 having the same height as the bed surface 1a. However, the auxiliary floor portion 10 is not always necessary, and the bed of the sewing machine body M is not necessarily required. The flap covers 12, 13, and 14 may be directly attached to the part 1.
In this embodiment, the guide member 15 on which the cloth guide surface is formed is attached to the front flap cover 12. However, the guide member 15 does not need to be separate from the front flap cover 12, and is formed integrally. May be.

As shown in FIGS. 3 to 5, each of the flap covers 12, 13, and 14 is rotatable via a damper 21 on a flap cover rotating shaft 20 that is provided integrally protruding on the upper end portion 11 of the auxiliary floor portion 10. Is attached.
The damper 21 constitutes a speed suppressing means for suppressing the rotational speed of each of the flap covers 12, 13, 14, and the core shaft 21 a is non-rotatably fitted in the shaft hole 20 a of the flap cover rotating shaft 20. The outer ring 21b of the damper 21 that rotates with respect to the core shaft 21a is fitted in the outer ring shaft hole 12a of each of the flap covers 12, 13, and 14.
A radially extending damper claw 21c is provided on the outer periphery of the outer ring 21a. The damper claw 21c is fitted in a claw groove 12b having a wider width in the circumferential direction than the damper claw 21c provided in the outer ring shaft hole 12a. A gap 12c is formed between the groove 12b and the wall surface.
The gap 12c is a non-operating state in which the damper claw 21c does not come into contact with the wall surface of the claw groove 12b and the damper 21 does not operate when the flap covers 12, 13, and 14 start to rotate outwardly by the biasing force of the flap spring 22. Form a region.
The speed suppressing means is a damper such as an oil damper or a friction damper in this embodiment, but may be a simple one such as a low load spring.

As shown in FIG. 6, the flap covers 12, 13, and 14 are urged in the opening direction by the flap spring 22 in the closed state.
The flap spring 22 has arms 22b at both ends of the spring body 22a, and one arm 22b is fixed to each of the flap covers 12, 13, and 14.
The other arm 22b is in a free state when the cover body C is open as shown in FIG. 6A. When the flap covers 12, 13, and 14 are closed, as shown in FIG. It comes into contact with the inner surface side of the auxiliary floor portion 10, and the spring body 22a bends to bias the flap covers 12, 13, 14 in the opening direction.

The flap spring 22 constitutes the urging means of the present invention, and only rotates until the center of gravity of at least each of the flap covers 12, 13, 14 comes outside the vertical plane passing through the axis of each flap cover rotating shaft 20. Adjusted to have a biasing force.
Further, since the damper claw 21c has a gap 12c that forms a non-operating region of the damper 21 and is fitted in the claw groove 12b, the flap springs 22 have their flap covers 12, 13, 14 in their own gravity. Until it rotates in the opening direction.
Further, if the gap 12c forming the non-operating region is adjusted to such a width that the damper 21 does not operate while the urging force of the flap spring 22 is applied, the flap covers 12, 13, and 14 are more quickly rotated and opened. can do.
As shown in FIG. 6, in the front flap cover 12, one arm 22 b of the flap spring 22 is fixed by being sandwiched between the guide members 15 when the guide member 15 is attached to the front flap cover 12. .
In the present embodiment, the urging means uses a coil spring, but other types of springs such as a leaf spring may be used, and various elastic bodies such as sponges may be employed.

As shown in FIGS. 7 to 9, the front flap cover 12 and the rear flap cover are closed in order to close the flap covers 12, 13 and 14 against the biasing force of the spring member 22 and maintain the closed state of the cover body C. 13 is provided with a front locking groove 32 and a rear locking groove 33 which are respectively engaged with a front hook claw 30 and a rear hook claw 31 provided in the sewing machine main body M. Is configured to engage the sewing machine main body M.
The side flap cover 14 is provided with a front protrusion 34 and a rear protrusion 35 that protrude from a front end face 14 a that contacts the front flap cover 12 and a rear end face 14 b that contacts the rear flap cover 13. , 13, 14, the front protrusion 34 and the rear protrusion 35 are engaged with the front concave groove 36 provided in the front flap cover 12 and the rear concave groove 37 provided in the rear flap cover 13, respectively. The side flap cover 14 and the other flap covers 12, 13 are fixed.
The front protrusion 34, the rear protrusion 35, the front concave groove 36, and the rear concave groove 37 constitute linkage means that locks the flap covers and maintains the closed state of the cover body C.

The front flap cover 12 and the rear flap cover 13 are locked to the sewing machine main body M by the front and rear hook claws 30 and 31, and the side flap cover 14 is fixed to the other flap covers 12 and 13 by the front and rear projections 34 and 35. The closed state of the cover body C is maintained.
Note that how to select the two flap covers to be locked to the sewing machine main body M by the locking means can be determined as needed. However, as in this embodiment, the front flap cover 12 and the rear flap cover are selected. In order to obtain a stable closed state, it is preferable to lock 13 to the sewing machine main body M by the locking means and lock the side flap cover 14 to the other flap covers 12 and 13 by the linkage means.
Further, not limited to this embodiment, all the flap covers 12, 13, 14 are locked to the sewing machine main body M by the locking means, or only the side surface flap cover 14 is locked to the sewing machine main body M by the locking means, It is also possible to complete the closed state of the cover body C by locking the other flap covers 12 and 13 to the side surface flap cover 14 by linkage means.

10-12, the front hook nail | claw 30 and the rear hook nail | claw 31 are connected to the switch 60 via the connection member 50, and the front hook nail | claw 30 and the rear hook claw 31 are respectively connected by operation of the switch 60. The front locking groove 32 and the rear locking groove 33 are detachable.
A transmission mechanism for connecting the hook claws 30 and 31 to the switch 60 via the connecting member 50 is accommodated in the roof portion 4 and disposed on the upper portion of the arm portion 3.

The front hook claw 30 is provided with a contact portion 30c that engages with the connecting member 50 on the opposite side of the claw portion 30a across the rotation center hole 30b, and the front slide of the front bearing member 41 fixed to the roof portion 4 A protrusion 30d that is slidably fitted into the hole 42 is provided near the center.
One end of the front spring member 43 is attached to the front hook claw 30 and the other end is fixed to the roof portion 4 to urge the front hook claw 30 in a direction to always engage with the front locking groove 32.
The rear hook claw 31 has, on the opposite side of the claw portion 31a, a rotation center hole 31b, a connection hole 31c with which the rear wire member 44 connected to the connection member 50 is engaged, and a rear bearing member 45 fixed to the roof portion 4. A protrusion 31d is slidably fitted into the rear slide hole 46.
As with the front spring member 43, one end of the rear spring member 47 is attached to the rear hook claw 31 and the other end is fixed to the roof portion 4, so that the rear hook claw 31 is always engaged with the rear locking groove 33. Energized in the direction.

The connecting member 50 is connected to the main member 51 connected to the front wire member 48 connected to the switch 60 through the connecting hole 51a, the front member 52 engaged with the contact portion 30c of the front hook claw 30, and the rear hook claw 31. The rear wire member 44 and the rear member 53 connected to each other constitute a connecting means for connecting the locking means and the switch means of the present invention.
A front screw member 55 and a rear screw member 56 are fastened to the front member 52 and the rear member 53, respectively, with the main member 51 interposed therebetween, thereby forming a connecting member 50 in which the members 51, 52, and 53 are integrated. A fixed shaft 54 provided on the roof portion 4 is rotatably fitted.

The front long hole 57 of the main member 51 through which the front screw member 55 passes and the rear long hole 58 of the main member 51 through which the rear screw member 56 passes are respectively attached to the main member 51 of the front member 52 and the rear member 53. It plays the role which adjusts a position and comprises the adjustment means of this invention with each screw member 55,56.
The connecting member 50 has a main spring member 59 attached around the fixed shaft 54, and is biased in a direction in which the front and rear hook claws 30 and 31 are engaged with the front and rear locking grooves 32 and 33, respectively.

The switch 60 includes a window portion 61 provided at the upper portion on the front side of the roof portion 4 of the sewing machine body M, and a switch terminal 62 provided so as to be slidable within the window portion 61.
As shown in FIG. 11A, when the switch terminal 62 is slid to the right side as viewed from the front of the sewing machine main body M as shown by an arrow, the front wire member 48 is pulled and the connecting member 50 is moved around the fixed shaft 54. It is designed to rotate.
In this embodiment, the switch terminal 62 is slid along the upper surface of the roof portion 4, but the front wire member 48 is operated by moving up and down as in the modified embodiment shown in FIG. You may do it.

Next, usage modes and operational effects of this embodiment will be described.
First, in order to open the flap covers 12, 13, and 14 from the closed state as shown in FIG. 1 to the open state as shown in FIG. 2, the switch terminal 62 of the switch 60 is set in the horizontal direction. Slide.
11A, when the switch terminal 62 slides in the horizontal direction, the main member 51 of the connecting member 50 connected to the front wire member 48 is urged by the biasing force of the main spring member 59. It rotates against the fixed shaft 54 against it.

A front member 52 and a rear member 53 having a fixed rotation shaft 54 as a common rotation shaft are integrally fixed to the main member 51 by a front screw member 55 and a rear screw member 56, respectively. The attachment position with the main member 51 is adjusted by the long hole 57 and the rear long hole 58.
The front side of the front member 52 is in contact with the contact portion 30 c of the front hook claw 30, and the front hook claw 30 rotates against the front spring member 43 by rotating together with the main member 51. The actuator is operated in a direction to release the engagement with the front locking groove 32 as indicated by an arrow in FIG.
Further, the front hook claw 30 is stably operated and its operating range is limited by the protrusion 30d being fitted into the front slide hole 42 of the front bearing member 41 and sliding.

Similarly, the rear member 53 is rotated integrally with the main member 51 around the fixed shaft 54 in the direction of the arrow in FIG. 11A, thereby pulling the rear wire member 44 and moving the rear hook claw 31 in the direction of the arrow. And the engagement with the rear locking groove 33 is released.
Since the front member 52 and the rear member 53 have their attachment positions to the main member 51 adjusted by the long holes 57, 58, the front and rear hook claws 30, 31 are simultaneously released from the front and rear locking grooves 32, 33. Is done.
When the engagement between the hook claws 30 and 31 and the locking grooves 32 and 33 is released, the front flap cover 12 and the rear flap cover 13 are urged outward by the flap springs 22, respectively. The rotation starts around the flapper cover rotation shaft 20 provided at the upper end 11 of the floor 10.

When the front flap cover 12 and the rear flap cover 13 begin to rotate outwardly, the front end face 14a and the rear end face 14b of the side flap cover 14 begin to separate from the front flap cover 12 and the rear flap cover 13, respectively. The engagement of the projection 34, the rear projection 35, the front concave groove 36, and the rear concave groove 37 is released, and the side flap cover 14 also starts to rotate in the opening direction.
The biasing force is adjusted so that each flap spring 22 rotates until the center of gravity of each flap cover 12, 13, 14 comes outside the vertical plane on the flap cover rotating shaft 20, and the damper pawl 21c , 13, and 14 are engaged with the claw grooves 12b having the gap 12c in the non-operating area so that the damper 21 does not operate at the initial movement when the outer cover begins to rotate outward. Is rotated rapidly until it comes to the outside of the vertical surface on the flap cover rotating shaft 20, and then rotates in the opening direction by its own gravity.

At this time, as the flap covers 12, 13, and 14 are accelerated by gravity and the rotational speed increases, the rotational speed is suppressed by the damper 21, so that the flap covers 12, 13, and 14 are stopped in the open state. There is no impact or noise when you do.
When the flap covers 12, 13, and 14 are completely opened, the guide member 15 provided on the inner side of the front flap cover 12 is continuous with the upper surface of the upper end portion 11 of the auxiliary floor portion 10, and the bed surface 1a. A cloth guide surface that gently slopes down from the height of the cloth is formed, and the cloth feed is made smooth to facilitate the sewing work.

As described above, the sewing machine equipped with the flapper cover of this embodiment can immediately open the flap covers 12, 13, and 14 and immediately start the sewing work by simply operating the switch 60. No troublesome preparatory work is required.
Since the cloth guide surface is formed by the guide member 15 provided in advance inside the front flap cover 12, it is not necessary to attach an auxiliary table or the like, and it is attached between the front flap cover 12 and the guide member 15. Since the product storage case 16 is housed so that it can be pulled out, the entire sewing machine can be made compact and it is excellent in usability.

Next, a procedure for closing the flap covers 12, 13, and 14 of the sewing machine of this embodiment and closing the cover body C will be described.
First, the rear flap cover 13 and the side flap cover 14 are rotated so as to be closed, the rear protrusion 35 and the rear concave groove 37 are held in a slightly engaged state, and then the front flap cover 12 is further rotated so as to be closed. Thus, the front protrusion 34 and the front concave groove 36 are also held in a slightly engaged state.
In order to hold this state, it is only necessary to hold the front flap cover 12 and the rear flap cover 13 so that the upper sides of the front flap cover 12 and the rear flap cover 13 are brought close to each other. Since the claws 30 and 31 are fitted into the respective locking grooves 32 and 33, when the hand is released from the switch 60, the hook claws 30 and 31 and the respective locking grooves 32 and 33 are locked and the respective flap covers 12. , 13, 14 are locked to the sewing machine body M, and the cover body C is closed.

In this closed state, an outer peripheral surface in which the sewing machine main body M and the cover body C are integrated is formed to prevent entry of dust and dust into the opening S and the operation unit 6, and an excellent appearance of a compact case shape. Can be obtained.
As described above, the sewing machine provided with the flapper cover of the present embodiment can also perform the operation of covering the sewing machine main body M with the cover body C very easily, and since it is compact, it can be easily stored and has an excellent appearance. There is no sense of incompatibility even indoors.
The sewing machine provided with the flap cover of the present invention is not limited to the mode of the transmission mechanism such as the locking means, the coupling means, the linking means, and the switch means in this embodiment, and does not depart from the spirit of the present invention. Needless to say, various similar modes can be adopted within a range.

  When the sewing machine equipped with the flap cover of the present invention is not used, it prevents dust and the like from entering and has a compact outer appearance, and when used, it can start work quickly without troublesome preparation work. Although it can be widely used as a sewing machine, it is particularly suitable for use in household sewing machines, portable sewing machines, and the like.

M sewing machine body C cover body S opening 1 bed 1a bed surface 2 pedestal 3 arm 4 roof 5 handle 6 operation 10 auxiliary floor 11 upper end 12 front flap cover 13 back flap cover 14 side flap cover 15 Guide member 16 Accessory storage case 20 Flap cover rotating shaft 21 Damper (speed control means)
22 Flap spring (biasing means)
30 Front hook claws (locking means)
31 Rear hook claw (locking means)
32 Front locking groove (locking means)
33 Rear locking groove (locking means)
34 Protrusion (linkage means)
35 Rear protrusion (linkage means)
36 Front groove (linkage means)
37 Rear groove (linkage means)
41 front bearing member 42 front slide hole 43 front spring member 44 rear wire member 45 rear bearing member 46 rear slide hole 47 rear spring member 48 front wire member 50 connecting member (connecting means)
51 Main member 52 Front member 53 Rear member 54 Fixed shaft 55 Front screw member 56 Rear screw member 57 Front long hole (adjusting means)
58 Rear slot (adjustment means)
59 Main spring member 60 Switch (switch means)
61 Window 62 Switch terminal

Claims (5)

The bed part is formed with a bed surface on the upper part, a pedestal part standing from the bed part, and an arm part extending horizontally from the pedestal part above the bed part with an opening. The sewing machine body,
Opened and closed by rotating through a speed reduction means about a pivot axis relative to the bed of the sewing machine body, a front flap cover covering the front of the sewing machine body, the rear flap that covers the rear surface of the sewing machine body A cover and a cover body that covers at least the opening, and a side flap cover that covers a side surface opposite to the side of the sewing machine main body.
Biasing means for biasing said each flap covers each opening direction, and locking means for locking said each flap cover against the biasing force of the biasing means to the sewing machine body, said locking means Switch means connected via a connecting means,
The biasing means is adjusted to have a biasing force to rotate until the center of gravity of each flap cover comes outside the vertical plane passing through the rotation axis of each flap cover,
The speed suppressing means suppresses the rotational speed of each flap cover when the locking means is released and the flap covers urged by the urging means are released by their own weight, Each flap cover is provided with a non-operating area so that it does not operate while the biasing means is activated and the flap covers are biased in the opening direction.
By operating the switch means, said a closed state for holding the engagement of the sewing machine body, opened to release the opening to the respective flap covers said locking means of said each flap cover by the locking means A sewing machine provided with a flap cover, wherein the sewing machine main body and the outer peripheral surface of the cover body are integrated with each other to form a case-shaped outer peripheral surface in the closed state.   When the front flap cover and the back flap cover are locked to the sewing machine body by the locking means, the side flap cover is linked to the front flap cover and the back flap cover by linkage means, The sewing machine having a flap cover according to claim 1, wherein the cover body is held in a closed state.   When the side flap cover is locked to the sewing machine main body by the locking means, the front flap cover and the back flap cover are linked to the side flap cover by the linkage means, and the cover body is closed. The sewing machine comprising the flap cover according to claim 1, wherein the sewing machine is held.   3. The sewing machine with a flap cover according to claim 1, wherein the connecting means includes an adjusting means for simultaneously opening two or more flap covers locked to the sewing machine main body. The cloth guide surface which inclines and descends gently from the same height as the bed surface in the open state is formed on the inner side of the front flap cover. Sewing machine with the described flap cover.

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