JP2015002760A - Sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a housing structure having an inexpensive price, good appearance and excellent workability, regarding the housing structure for housing an electric cord for a sewing machine in a sewing machine body.SOLUTION: A sewing machine 10 includes: a housing recess 17 provided on an external surface of a sewing machine body 11 so that a power source cord 30 can be housed; an opening/closing door 20 which is provided in the sewing machine body 11 so that a closed state for closing the housing recess 17 or an open state for opening the housing recess 17 can be set and constitutes a design surface of the sewing machine body 11 in the closed state; and a winding shaft 25 extending in a direction crossing an extension surface of a door inner surface 20a from the door inner surface 20a facing the housing recess 17 at the closed position of the opening/closing door 20 so as to wind the power source cord 30.

Description

  The present invention relates to a sewing machine, and more particularly to a structure for storing an electric cord for a sewing machine in a sewing machine body.

  Conventionally, various techniques for storing an electric cord for a sewing machine have been disclosed. For example, a sewing machine disclosed in Patent Document 1 includes a cord reel that can wind up a power cord in a sewing machine body. According to this technique, the user can wind the power cord with the cord reel and store it in the sewing machine body when the sewing machine is not used. Further, for example, Patent Document 2 below discloses a sewing machine foot controller provided with a recess capable of storing an electric cord for connection with a sewing machine body. According to this technique, when the sewing machine is not used, the user can wind the electric cord in a spiral shape and store it in the recess of the foot controller.

Japanese Utility Model Publication No. 63-171176 Japanese Utility Model Publication No. 3-27474

(Problems to be solved by the invention)
The sewing machine disclosed in Patent Document 1 uses an expensive cord reel to store the power cord, which is disadvantageous in terms of product cost. Further, this sewing machine is disadvantageous in terms of appearance because it is necessary to expose the tip of the power plug from the sewing machine body in order to make it easy to pull out the power cord from the cord reel. Therefore, in order to cope with these problems, it is conceivable to use the electrical cord storage structure disclosed in Patent Document 2. However, this storage structure requires a difficult operation of winding the electric cord itself in a spiral shape and storing it in a recess, or storing the electric cord in a recess while winding it in a spiral shape. It is disadvantageous in terms of workability.

  The present invention has been made in view of the above points, and one of its purposes relates to a storage structure for storing an electric cord for a sewing machine in a sewing machine body, and is inexpensive and good in appearance. It is to realize a storage structure with excellent workability.

(Means for solving the problem)
In order to achieve the above object, a sewing machine according to the present invention includes a storage recess, an opening / closing door, and a winding shaft. The storage recess is provided on the outer surface of the sewing machine main body so as to be able to store the electric cord for the sewing machine. The open / close door is provided in the sewing machine body so as to be set in a closed state in which the storage recess is closed or in an open state in which the storage recess is opened, and constitutes a design surface of the sewing machine body in the closed state. The winding shaft extends from the inner surface of the door that faces the storage recess in the closed state of the open / close door in a direction intersecting with the extending surface of the door inner surface for winding the electric cord.

  According to the above configuration, the user stores the electric cord in the storage recess by setting the opening / closing door in the closed state after directly winding the electric cord on the winding shaft extending from the inner surface of the opening / closing door. be able to. In this case, since the electric cord can be easily wound around the winding shaft, the workability for storing the electric cord is excellent. Further, it is not necessary to use an expensive device such as a cord reel, and an inexpensive storage structure for an electric cord can be realized. In addition, it is possible to provide a structure for storing the electric cord in the sewing machine body even in countries and regions where the electrical specification of the cord reel is not permitted. Furthermore, when a plug is provided at the end of the cord of the electric cord, it is possible to prevent the plug from being exposed from the main body of the sewing machine by storing the electric cord together with the plug in the housing recess. Appearance is good (excellent in aesthetics).

  In the above-described sewing machine according to the present invention, it is preferable that the winding shaft includes a restricting portion that restricts the electric cord wound around the winding shaft from coming out in the axial direction of the winding shaft. This restricting portion is effective for maintaining the winding state of the electric cord wound around the winding shaft.

  In the above-described sewing machine according to the present invention, it is preferable that the winding shaft is configured as a cylindrical member capable of accommodating the plug provided at the cord end portion of the electric cord in the in-cylinder space. Thereby, while winding an electric cord around a winding axis | shaft, the plug provided in the code | cord | end part of this power cord can be accommodated in the cylinder space of a winding axis | shaft. In this case, since the in-cylinder space is formed in the cross-sectional center region (winding center region) of the winding shaft, the plug can be easily accommodated in the in-cylinder space regardless of the winding position of the electric cord with respect to the winding shaft. .

  In the sewing machine according to the present invention, it is preferable that a locking groove capable of locking an electric cord extending between the inside of the cylinder and the outside of the cylinder is provided at the opening edge of the cylindrical member. In this case, it is possible to prevent a part of the electric cord wound around the winding shaft from protruding from the winding shaft by fitting a portion of the electric cord near the plug into the locking groove.

  In the above-described sewing machine according to the present invention, the electrical cord has a storage recess through one of the cord end portions that is always connected to a current-carrying region inside the sewing machine body and the other cord end portion is provided in the sewing machine body. It is preferable to be taken out. Thereby, there is no possibility that the electric cord is removed from the sewing machine body by the user, and the loss of the electric cord can be prevented.

  In the above-described sewing machine according to the present invention, the opening / closing door is attached to the sewing machine main body via the rotation shaft, and between the closed position for closing the storage recess and the open position for opening the storage recess with the rotation shaft as the center. It is preferable that it can be rotated. In this case, the opening / closing structure of the opening / closing door can be simplified by using the rotary opening / closing door.

  In the sewing machine according to the present invention, the rotation shaft has elasticity, and the opening / closing door can be detached from the sewing machine body by elastic deformation of the rotation shaft when the rotation shaft receives an external load, for example. Is preferred. Thus, the electrical cord can be wound around the winding shaft of the opening / closing door after the opening / closing door is temporarily removed from the sewing machine body by using the elasticity of the rotation shaft. In this case, the user can more easily perform the work of winding the electric cord. Further, after that, the opening / closing door can be reattached to the sewing machine body by utilizing the elasticity of the rotation shaft.

  As described above, according to the present invention, the storage structure for storing the electric cord for the sewing machine in the sewing machine main body can realize a storage structure that is inexpensive, has a good appearance, and has excellent workability. It became possible.

It is a perspective view which shows an external appearance when the sewing machine 10 which concerns on this Embodiment is seen from the back side. FIG. 2 is a perspective view showing an external appearance of the sewing machine 10 and shows a state in which an opening / closing door 20 for opening and closing a storage recess 17 capable of storing a power cord 30 is detached from the sewing machine body 11. It is the elements on larger scale which show the structure of A area | region of the door 20 in FIG. It is the elements on larger scale which show the structure of B area | region of the door 20 in FIG. It is a figure which shows the structure of the winding axis | shaft 25 of the door 20 in FIG. FIG. 2 is a perspective view showing an appearance of a part of the sewing machine 10 when the opening / closing door 20 is in an open position where the storage recess 17 is opened.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows an appearance of the sewing machine 10 according to the present embodiment when viewed from the back side. 1 and other drawings, when the sewing machine 10 is viewed from the front side where the user is located, the left direction of the sewing machine 10 is the first direction indicated by the arrow X, and the forward direction of the sewing machine 10 is indicated by the arrow Y. The second direction is set, and the upward direction of the sewing machine 10 is a third direction indicated by an arrow Z.

  As shown in FIG. 1, the sewing machine 10 houses a plurality of components inside a sewing machine body 11. The sewing machine body 11 includes a front housing 11a and a rear housing 11b. A storage recess 17 is provided on the back surface of the sewing machine body 11, particularly on the back surface of the rear housing 11b. The storage recess 17 forms an open storage space in which an electrical cord for a sewing machine, in particular, the power cord 30 (the cord portion 30a and the plug 30b) can be stored. The back surface of the sewing machine body 11 is defined as a surface opposite to the front surface when the surface facing the user when the sewing machine 10 is used is the front surface (front surface) of the sewing machine body 11. The power cord 30 is connected to the terminal box 12 for turning on the power. This storage recess 17 corresponds to the “storage recess” of the present invention.

  The sewing machine body 11 includes a flat opening / closing door (“storage door”) that can be opened and closed between a closed position (closed state) for closing the storage recess 17 and an open position (open state) for opening the storage recess 17. 20) is provided. The open / close door 20 includes a door inner surface 20a that faces the storage recess 17 at the closed position, and a door outer surface 20b that forms a design surface (outer design surface) of the sewing machine body 11 at the closed position. The opening / closing door 20 corresponds to the “opening / closing door” of the present invention. The opening / closing door 20 is a pivoting type that is pivotably attached to the sewing machine body 11 via a pair of upper and lower pivoting mechanisms 21, 21, and is particularly right-open in the embodiment shown in FIG. 1. Each rotation mechanism 21 includes a convex rotation shaft 23 provided on the opening / closing door 20 and a recess 14 provided on the sewing machine body 11. In this case, when the user pulls or pushes the operation claw 22 provided on the opening / closing door 20, the opening / closing door 20 is closed between the closed position and the storage recessed portion 17 around the rotation shaft 23. It can be rotated between an open position and an open position. In this case, the opening / closing structure of the opening / closing door 20 can be simplified by using the pivotable opening / closing door 20.

  On the other hand, the sewing machine body 11 is provided with a power cord groove 13 into which the cord portion 30a of the power cord 30 can be fitted. If the power cord groove 13 is used, the sewing machine 10 can be used by removing the power cord 30 from the storage recess 17 while fitting the power cord 30 in the power cord groove 13 even when the door 20 is set to the closed position. it can. The sewing machine body 11 is provided with a recess 15 corresponding to the shape of the operation claw 22 of the opening / closing door 20. For this reason, the door outer surface 20b of the opening / closing door 20 and the back surface of the sewing machine body 11 can be flush with each other with the opening / closing door 20 set at the closed position, and the appearance of the sewing machine body 11 can be visually improved. Can be improved.

  As shown in FIG. 2, the cord portion 30a of the power cord 30 is always connected to the terminal box 12 whose one cord end is an energization region. The other end of the cord 30 a provided with the plug 30 b is taken out into the storage recess 17 through the take-out hole 16 provided in the sewing machine body 11. The take-out hole 16 corresponds to the “take-out hole” of the present invention. According to this structure, there is no possibility that the power cord 30 is removed from the sewing machine body 11 by the user, and the loss of the power cord 30 can be prevented.

  Here, the detailed structure of the door 20 will be described with reference to FIGS.

  As shown in FIGS. 2 and 3, the opening / closing door 20 is typically formed of a resin material having elasticity, and is fitted into each recess 14 of the sewing machine body 11 while elastically deforming each rotation shaft 23. As a result, the opening / closing door 20 can be assembled to the sewing machine body 11. This assembly structure is also called a “snap fit structure”. On the other hand, the opening / closing door 20 can be detached from the sewing machine body 11 by receiving an external load such that each rotation shaft 23 is elastically deformed. For this reason, the user can freely attach and detach the open / close door 20 to and from the sewing machine body 11 as necessary.

  As shown in FIGS. 2 and 4, the opening / closing door 20 includes two notches 24 for holding the opening / closing door 20 in the closed position. In this case, when the open / close door 20 is set to the closed position, each notch 24 is elastically deformed so as to be compressed by the load received from the opening edge of the housing recess 17 (see particularly the two-dot chain line in FIG. 4). . In this case, the opening / closing door 20 is securely held by the sewing machine body 11 by the frictional force generated between the opening edge of the storage recess 17 and each notch 24. For this reason, it can prevent opening and closing door 20 opening carelessly.

  As shown in FIGS. 2 and 5, the door inner surface 20 a of the opening / closing door 20 is defined by an extending surface of the door inner surface 20 a (a first direction X and a third direction Z in the closed position of the opening / closing door 20). A winding shaft 25 extending in a direction intersecting with the flat plane) (second direction Y when the door 20 is closed) is provided. The winding shaft 25 has a region around which the cord portion 30a of the power cord 30 can be wound. The winding shaft 25 corresponds to the “winding shaft” of the present invention. In addition, the opening / closing door 20 can be temporarily removed from the sewing machine body 11 by using the above-described snap-fit structure (elasticity of the rotation shaft 23).

  The winding shaft 25 is configured as a cylindrical member having an in-cylinder space 26. Thereby, while the cord portion 30 a of the power cord 30 is wound around the winding shaft 25, the plug 30 b provided at the cord end portion of the cord portion 30 a can be stored in the in-cylinder space 26 of the winding shaft 25. This in-cylinder space 26 corresponds to the “in-cylinder space” of the present invention. In this case, since the in-cylinder space 26 is formed in the cross-sectional center region (winding center region) of the winding shaft 25, the plug 30b can be easily placed in the in-cylinder space 26 regardless of the winding position of the cord portion 30a with respect to the winding shaft 25. Can be stored.

  The opening edge 25a of the winding shaft 25 is provided with a locking groove 27 that can lock the cord portion 30a extending between the inside and the outside of the tube. This locking groove 27 corresponds to the “locking groove” of the present invention. In this case, it is possible to prevent a part of the cord portion 30a wound around the winding shaft 25 from protruding from the winding shaft 25 by fitting a portion of the cord portion 30a in the vicinity of the plug 30b into the locking groove 27. . The locking grooves 27 are preferably provided at a plurality of different positions on the opening edge 25a. Thereby, the locking groove 27 in a suitable position can be selected at an arbitrary winding position of the cord portion 30a with respect to the winding shaft 25, and the cord portion 30a can be fitted into the locking groove.

  The winding shaft 25 is provided with a flange-shaped (saddle-shaped) restricting portion 28 at the tip. The restricting portion 28 functions to restrict the cord portion 30a wound around the winding shaft 25 from slipping out in the axial direction of the winding shaft 25 (the arrow direction in FIG. 5). This restricting portion 28 corresponds to the “regulating portion” of the present invention. This is effective in maintaining the winding state of the cord portion 30a wound around the winding shaft 25.

  FIG. 6 is referred to for a typical example of the storing operation for storing the power cord 30 in the storing recess 17 of the sewing machine body 11 when the sewing machine 10 is not used. In this storage operation, the user pulls the operating claw 22 of the opening / closing door 20 to disengage the opening edge of the storage recess 17 from the notch 24 and further rotates the opening / closing door 20 to rotate the opening / closing door 20. Is set to the open position. In this open position, since the winding shaft 25 protruding from the door inner surface 20a of the open / close door 20 is exposed, the user can easily wind the cord portion 30a of the power cord 30 around the winding shaft 25. Further, the user can store the plug 30 b in the in-cylinder space 26 of the winding shaft 25 after fitting the portion of the cord portion 30 a near the plug 30 b into the locking groove 27 of the winding shaft 25. Thereafter, the user turns the opening / closing door 20 toward the closed position, and further pushes the operation claw 22 until the notch 24 engages with the opening edge of the storage recess 17 to set the opening / closing door 20 to the closed position. Is done.

  According to the above configuration, the user winds the power cord 30 directly around the winding shaft 25 extending from the door inner surface 20a of the open / close door 20 in the open state, and then sets the open / close door 20 in the closed state, thereby setting the power cord 30. Can be stored in the storage recess 17. In this case, since the power cord 30 can be easily wound around the winding shaft 25, the workability relating to the storage of the power cord 30 is excellent. Further, it is not necessary to use an expensive device such as a cord reel, and an inexpensive storage structure for the power cord 30 can be realized. In addition, it is possible to provide a structure for storing the power cord 30 in the sewing machine body 11 even in a country or region where the electrical specifications of the cord reel are not permitted. Further, by storing the entire power cord 30 including the plug 30b in the storage recess 17, it is possible to prevent the plug 30b from being exposed from the sewing machine body 11, so that the appearance of the sewing machine body 11 has a good appearance. Are better).

  Instead of the storage operation shown in FIG. 6, the opening / closing door 20 is temporarily removed from the sewing machine body 11 using the snap-fit structure described above, and then the cord portion 30 a of the power cord 30 is wound around the winding shaft 25. You can also. In this case, the winding operation of the cord portion 30a of the power cord 30 can be performed more easily. Thereafter, the opening / closing door 20 can be reattached to the sewing machine main body 11 using the snap-fit structure described above.

  The present invention is not limited to the above exemplary embodiment, and various applications and modifications are possible. For example, each of the following embodiments to which the above embodiment is applied can be implemented.

  In the above-described embodiment, the case where the storage recess 17 for storing the power cord 30 is provided on the back surface of the sewing machine body 11 is described. However, in the present invention, the place where the storage recess 17 is provided is not limited thereto. The front surface, side surface, top surface, and the like of the sewing machine body 11 can be appropriately selected.

  In the above embodiment, the case where the opening / closing door 20 is opened to the right has been described. However, in the present invention, the opening / closing door 20 is not limited to the opening to the right. A structure such as an opening may be employed.

  In the above embodiment, the case where the turning mechanism 21 for the opening / closing door 20 is constituted by the turning shaft 23 of the opening / closing door 20 and the recess 14 of the sewing machine main body 11 has been described. A configuration in which a portion corresponding to the rotation shaft 23 is provided in 11 and a portion corresponding to the concave portion 14 is provided in the open / close door 20 can also be adopted.

  In the above-described embodiment, the case where the opening / closing door 20 is detachable from the sewing machine body 11 using the snap-fit structure has been described. However, in the present invention, the opening / closing door 20 is attached to / detached from the sewing machine body 11 via a hinge mechanism or the like. It may be impossible to attach.

  In the above embodiment, the rotary door 20 is used to open and close the storage recess 17 of the sewing machine main body 11, but in the present invention, another type of open / close structure instead of the rotary door is used. You can also. Further, one or a plurality of claws are provided on one of the edge of the opening / closing door 20 and the opening edge of the sewing machine main body 11, and the other of the edge of the opening / closing door 20 and the opening edge of the sewing machine main body 11 It is also possible to employ a structure in which one or a plurality of recesses that engage with the claw body are provided, and the opening / closing door 20 is attached to the sewing machine body 11 by fitting the claw body into the corresponding recess. In this case, it is preferable that the opening / closing door 20 is configured to be detachable from the sewing machine main body 11 using the snap-fit structure described above. The open / close door 20 can also be referred to as an open / close lid that can be set in a closed state in which the storage recess 17 is closed or in an open state in which the storage recess 17 is opened.

  Moreover, in the said embodiment, the cylinder space 26 (1st component) for accommodating the plug 30b, the latching groove | channel 27 (2nd component) for latching the cord part 30a, and a cord part Although the winding shaft 25 having all of the restricting portion 28 (third component) that restricts the withdrawal of 30a has been described, in the present invention, at least one of these three components can be omitted. . For example, when all of these three components are omitted, a solid rod-like winding shaft having no hollow space can be employed instead of the winding shaft 25. Thereby, the structure of a winding axis | shaft can be simplified.

  In the above embodiment, the type of power cord 30 that is always connected to the sewing machine main body 11 has been described. However, in the present invention, instead of the power cord 30, it is connected to the sewing machine main body 11 via connection means such as a plug. It can also be changed to a detachable power cord.

  In the above embodiment, the case where the power cord 30 is stored in the storage recess 17 of the sewing machine body 11 has been described. However, the present invention is applied to a storage structure that stores various power cords for the sewing machine including the power cord 30. can do. In this case, the electric cord may not have a portion corresponding to the plug 30b.

  DESCRIPTION OF SYMBOLS 10 ... Sewing machine, 11 ... Sewing machine main body, 11a ... Front side housing, 11b ... Rear side housing, 12 ... Terminal box, 13 ... Power cord groove, 14 ... Recessed part, 15 ... Recessed part, 16 ... Extraction hole, 17 ... Storage recessed part, DESCRIPTION OF SYMBOLS 20 ... Opening / closing door, 20a ... Door inner surface, 20b ... Door outer surface, 21 ... Turning mechanism, 22 ... Operation nail, 23 ... Turning axis, 24 ... Notch, 25 ... Winding shaft, 25a ... Opening edge, 26 ... Tube Inner space, 27 ... locking groove, 28 ... regulating part, 30 ... power cord, 30a ... cord part, 30b ... plug

Claims (7)

A storage recess provided on the outer surface of the sewing machine body for storing an electric cord for the sewing machine;
An opening / closing door provided in the sewing machine body so as to be settable in a closed state for closing the storage recess or an open state for opening the storage recess, and constituting a design surface of the sewing machine body in the closed state;
A winding shaft extending in a direction intersecting with the extending surface of the door inner surface from the door inner surface facing the storage recess in the closed state of the open / close door for winding of the electric cord;
Including sewing machine. The sewing machine according to claim 1,
The winding shaft is a sewing machine including a restricting portion that restricts the electric cord wound around the winding shaft from coming off in the axial direction of the winding shaft. The sewing machine according to claim 1 or 2,
The said winding axis | shaft is a sewing machine comprised as a cylindrical member which can accommodate the plug provided in the code | cord | chord end part of the said electric cord in cylinder space. The sewing machine according to claim 3,
A sewing machine in which an opening groove of the tubular member is provided with a locking groove capable of locking the electric cord extending between the inside of the cylinder and the outside of the cylinder. The sewing machine according to any one of claims 1 to 4,
One end of the electric cord is always connected to a current-carrying region inside the sewing machine main body, and the other end of the electric cord is taken out into the housing recess through an extraction hole provided in the sewing machine main body. ,sewing machine. The sewing machine according to any one of claims 1 to 5,
The open / close door is attached to the sewing machine body via a rotation shaft, and is rotatable between a closed position for closing the storage recess and an open position for opening the storage recess with the rotation shaft as a center. There is a sewing machine. The sewing machine according to claim 6,
The rotary shaft has elasticity, and the opening / closing door is removable from the sewing machine main body by elastic deformation of the rotary shaft.

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