TW200530453A - Sewing machine with function switch - Google Patents

Abstract

A sewing machine(1) includes a function switch(12) which has keys for calling various functions. The function switch(12) comprises an actuator(57) which extends into an operator's working area(A), serving for actuating a switch which is electrically connectable by way of a switching system in such a way that the switching function allocated to one of the keys is switchable by the actuator(57).

Description

200530453 IX. Description of the invention: [Technical Field Continuing to the Invention 3] The present invention relates to a sewing machine including a function switch having a plurality of operating elements for operating a switch connected by an electric wire to a sewing machine control system; The switch of the operating element arranged to call a specific switching function of the control system; and the operating element provided in a transition area from the head of the sewing machine to the arm of the sewing machine. I: Prior art] Background of the invention 10 in the version 0002 0091222290 D / GB / F 092003

A sewing machine of this type has been described in DtTRKOPP ADLER document 767. The sewing machine is provided with a function switch under its arm and near the operator's work area. The switch has a plurality of keys that trigger various switch functions. Work on such a sewing machine has shown that a particular 15 function is often called-for example, a function for triggering seam tacking work by supplying reverse or dense stitching, while other functions are Rarely called. That kind of work requires the sewing machine operator to pay special attention to the fact that he must press the correct key every time. This becomes even more cumbersome when the keys that must be struck often are very far away and are not within reach of the operator directly. Such working conditions require the operator to interrupt the sewing work, because the hand required to hit a special 疋 key can no longer be used to guide the sewing material. This repetitive manual operation puts unnecessary stress on the operator, and the interruption time that must be used to reach the keys will extend the entire working time. In addition, this mode of operation can adversely affect the coordinated sequence of operations. 5 200530453

LJJZ ^ Α1 discloses a kind of sewing cutting machine, in which the key of the switch is set at the front of the head. This switch is electrically connected to the sewing system, and the secret circuit is set to DE 29907407, 疋 + T to change the function. υ / UU knows how to structure it and set it up in the operator-accessible, switchable domain.働 1_'s work area [Examination of the service] Summary of invention 10 15 20 This issue = ‘improve the class described at the beginning to reduce the burden on the author and achieve a more unified operation sequence. According to the present invention, the “sewing machine” is used to realize the function switch, wherein the function switch includes an operation lever that extends into an operator's work area and is mechanically connected to a lever switch; each switch is assigned to each operation: The switch of a selected operating element can be electrically connected to the joystick switch through a switching system, so that the switching function of each switching function assigned to the selected operating element of the operating element can be switched by the operating lever. One advantage of the present invention is that the convenience of operation of the initial sewing machine is improved by improving the ergonomic working position design. This helps make the job easier for the operator. The sewing machine according to the present invention allows an operator to trigger a selected sewing machine function during a sewing operation without interrupting the sewing operation to operate a key. At the same time, the operator typically wishes to use two hands to guide and process the sewing material without any interruption. This results in a generally more uniform operating mode, which can increase the output of the work station (work station). In one embodiment of the sewing machine, a circuit design that is easy to produce and has a low 2005 2005453 is realized. In this sewing machine, the switches are single, one: a non-conductive switching state in a stop position; each Each grip —, ~, one ', where every piece of machinery is mechanically connected to a slack working element switch, and each operating element switches eight or two switches, while the second switch is an integral part of the switch system. And the second switch is connected to the operating lever switch through an electric wire; the operating lever switch is connected in series to the second switch t which is switched by the switching system to an operating state of the operating switch. # Simplify the operation of the sewing machine through this improved solution. According to this improved solution, the switch system includes a plug pin that can be inserted into a jack and visible from the outside. The second switch can be used in the second switch by using the plug pin. The relevant switch is switched to the starting state of the switch. Thanks to this improvement, the operator of the sewing machine will immediately be able to see which function is currently assigned to the actuation located in the work area in place of the replaceable pin which can be assigned to each switch function, or by assigning it separately to The second switch can be selectively moved to a contact position and a contact element with a knife-off position to implement each switch function to be triggered by the operation lever switch. The contact element can be designed, for example, in the form of an adjustment screw which, when the adjustment screw is in the contact position, compresses two conductor segments of the corresponding second switch which are pre-loaded and separated. Turning the adjustment screw causes a change between the contact position and the disengaged position. It is particularly preferable to mark the contact 20 = so that it can be easily seen from the outside that they are in the contact position and also in the separated position. As another possibility to select each switch function, a slide switch may be used instead of the plug pin, and the slide switch may be used to realize each switch function triggered by the operation lever switch by generating a corresponding electrical contact. 200530453 A preferred modular design of the sewing machine is realized by operating elements arranged in a housing, the housing is placed on the head of the sewing machine, and a printed circuit board with a switch on it is provided in the housing . Depending on the configuration of the sewing machine and the arrangement of the work area formed thereby, the housing can be placed on the large part of the sewing machine or on the arm of the sewing machine accordingly. Brief description of the drawings Other details and advantages of the present invention will become apparent according to the following description in conjunction with the accompanying drawings, among which:

Brother θ 疋 includes a front view of a sewing and trowel machine with a function switch; Figure 2 is an enlarged detail view of the sewing machine in Figure 1; Figure 3 is an enlarged sectional view taken on line 砠-] ^ in Figure 2 Figure 4: Detailed enlarged view of the function switch in Figure 2; Figure 5: Cross-sectional view on line VV in Figure 4; ° Enlarged view of the printed circuit board shown in Figure 4; The printed circuit board of FIG. 6 is a cross-sectional view of line νΠΛαι in FIG. 6; FIG. 8 is a perspective view of a socket pin; FIG. 9 is a circuit diagram of an X force switch; and FIG. 10 is a function An improved embodiment of the moon dagger switch corresponds to the small partial view of FIG. 20. C implements the cold type] The detailed description of the embodiment is more detailed. The sewing machine 1 includes-a base plate 2 and an upward (upright) pillar 3 and-an elbow arm 4 that is substantially parallel to the base plate 2 on the soil. Arm 4 ends at-head $. 8 200530453. Shaft 6 can be installed on the ground; a handwheel 7 is provided on the side of sister 3. Within the head 5 'the free end of the arm shaft 6 is usually provided-for operation-the needle • A crank drive (not shown) of a lever 8 which includes a sewing needle 9 at its end facing the base plate 2. • 5 During sewing, the needle 9 is inserted into a hole 10 of a support, Θ. The support 1G may be (-a needle plate fixed on the base plate 2 or-a feed motion generating feed motion 'as known from a sewing machine with a needle feed device ㈣edkfeed). • —The thread tensioner 11 is installed on the front of the sewing machine 1, that is, the side of the sewing machine 1 facing the operator 10—referred to as the operator side B (see FIG. 3). According to Figs. 1 and 2, the -function switch 12 is located below the tensioner u; the function switch is fixed to the arm 4 by screws 15,16 passing through the support holes 13,14. The support holes 13, 14 are part of a dish-shaped housing 17 including an oblong cavity 18. The cavity 18 comprises-a printed circuit board 23 fixed by screws 19, 2G, 21, the printed 15 circuit board comprising-a printed circuit with a strip conductor (conductor)%. The details are shown in Figures 6 and 7. _ 侧 The side of the circuit board 23 including the strip conductor is provided with 〆 by adhesion. The frame 25 ′ forms the external shape of the printed circuit board 23. The frame 25 is provided with K sections 26 and 27. The upper recessed portion 26 shown in Fig. 7 accommodates a convex plate 28 with a certain gap but not relative rotation. The plate 28 is made of spring steel having a thickness of, for example, 0.4 mm, and is provided with four external supporting points, of which a supporting point 29 is exemplarily shown in FIG. 6. The plate 28 is also provided with a middle contact 28 ′. These four support points are themselves supported on a strip conductor 30 which is electrically connected to them. The printed circuit board 23 is provided with a strip-shaped conductor 31 having a circular contact surface 32. Contact surface 32 9 200530453 • Approximately at the center of the recessed portion 26. In the state of the insuiation position shown in Fig. 7, the contact 28 'is approximately 1 mm from the contact surface 32. • The lower recessed portion 27 shown in FIG. 7 receives a convex panel 33 having the same design as the above-mentioned board 28 except that the outer dimensions are small, and the board 33 is connected to a strip conductor by its four supports. 34 on. Like the above-mentioned board 28, the board 33 is also provided with a contact 33 '. The printed circuit board 23 is also provided with a strip conductor 35 having a circular contact surface 35 '. The contact surface 35 is located approximately at the center of the plate 33. In the separated position shown in FIG. 7, the contact 28 is about 1 mm from the contact surface 35. A flexible film 36 made of a plastic material having a thickness of, for example, 0.3 mm, adhered to the frame 25 prevents the plates 28, 33 received in the recessed portions 26, 27 from falling off. The design and arrangement of the plate 28 constitutes a switch 37a, and the design and arrangement of the plate 33 constitutes a switch 38a (see Fig. 7). According to Fig. 9, adjacent switches 37b, 37c, 37d, 37e, 37f are assigned to the switches 37a. In addition, the adjacent switches 38b, 38c, 38d, 38e, and 38f are assigned to the switch 38a. As will be described in detail below, there is a functional connection between switches arranged above and below, such as switches 37a and 38a. A switch 39 with strip conductors 40, 41 is located on the printed circuit board 23 • The side facing the arm 4 of the sewing machine 1 (see Fig. 6). The switch 39 is provided in the form of a reed switch. It has two contact pieces in a hollow glass structure that can be moved into contact by a 20 magnetic field. A key 42a constituting an operation element is connected to the casing 17 through a flexible rib 43. The rib 43 constitutes a hinge so that the key 42 a can be discarded into the housing 17. The key 42a is provided with a pusher 44 extending toward the middle of the switch 37a. The same keys 42b, 42c, 42d, 42e, and 42f are provided in the housing 17 near the keys 42a. The housing 17 10 200530453 is provided with a socket 45a below the key 42a and in the middle of the switch 38 &. Accordingly, the casing 17 is provided with the same insertion holes 45b, 45c, 45d, 45e, 45f near the insertion hole 45a. A plug pin 46 can be inserted into the insertion holes 45a to 45f, as shown by way of example in FIGS. 3 and 4 through the insertion pin 46 in the insertion hole 5 45a. Two truncated circular ribs protrude from the outside and from above and below into the otherwise circular insertion holes 45a to 45f, and FIG. 4 exemplarily shows the rib 22 in the insertion hole 45b. The plug pin 46 has a flat convex contact end 47 having an unequal rectangular cross section and a free end 50. The pillar-shaped basic structure of the plug pin 46 near the free end 50 includes two plane surfaces 48 and 49. The symmetrical and flattened shape of the free end 50 is used to mark the rotational position of the plug pin 46. The plug pin 46 and the socket 45a are designed as described: the plug pin 46 can be easily inserted into the socket 45a with the surfaces 48, 49 positioned accordingly; the plug pin 46 is rotated 90 degrees. Later, the plug pin 46 can be fixed by a rib 22 that engages with all the openings 51 of the plug 15 pin 46 to prevent it from slipping out. When inserted, the plug pin 46 is positioned such that the long side wall of the contact end 47 faces the rib 22 and can slide over the rib. Rotate 90. Later, the narrow side wall of the rectangular contact end 47 acts on the rib 22 from the rear. As shown in Figs. 2, 4, and 5, the housing 17 is provided with a 〆 support arm 53 which extends toward a bottom edge 52 of the head 5, and a rain-arm type operating lever 54 can be pivoted around a pivot A shaft 55 is movably mounted on the support arm. In FIGS. 2 and 4, the operating lever 54 has a lower arm 56 whose rounded end as an actuator 57 is adapted to the shape of the head 5 and the edge 52. The other arm 58 of the operating lever 54 protrudes toward the switch 39, and a permanent magnet 59 is provided at the end of the arm 11 200530453. The arm 58 is preloaded by a leaf spring 60 that tends to cause the operating lever 54 to rotate counterclockwise according to FIG. 5. Due to the design of the arm itself and the design of the operating lever 54, the operating lever 54 is in the stopped (replaced position) in FIG. 5. With the corresponding load acting on the actuator 57, the operating lever 54 can overcome the leaf spring 60 ’s • 5 The load k stop position is clockwise. ^ As shown in Figure 1, the function switch 12 is connected to a control system 62 via a cable 61, and at the same time a cable 63 is disconnected from the control system 62 to trigger the use of the sewing machine i for Device (not shown) for function control. Fig. 10 shows another embodiment of a function switch. Parts corresponding in function to those described with reference to the embodiment according to Figs. 1 to 9 have a band The apostrophe reference numerals. The same parts as those described in connection with FIGS. 丨 to 9 have the same reference numerals. They will not be described in detail. In FIG. 10, the function switch 12 is provided with a support arm 53, It has an actuator 57 in the form of an on / off key 39 ', which is connected to the 15 control system 62 via a cable to replace the switch 39 on the circuit. When working with the sewing machine 1, the operator mainly focuses on First job • Seen from the operator side B, the work area A is guided by the material B, and the work area A extends in front and side of the sewing needle 9 and from the base plate 2 to the thread tensioner u. The work—㊣ switch 12 allows the operator Functions 20, which are more commonly used in certain tasks, can be assigned to the actuators 57 and 57 located in the work area A. When the foot is raised together with the needle 9 which is in a resting position in its lowered position, for example, Slow down and change the tension of the line as one of the functions that can be switched (controlled), fc, ki, fe, ff. To this end, it is necessary to insert a plug pin into the plug of the relevant key 42a to 42f One of the holes 45a can be completed in such a way that 12 200530453 operates the relevant switch in the switch 38as38f by axially pushing the contact end 47 on the plate 33, and then rotates 90. The pin 46 is fixed to In the case of applying axial pressure, the plate 33 is bent so that the contact 33 contacts the contact surface 32. Fig. 3 shows this situation, that is, the contact position or the actuated position. Figures 4 and 9 show that the function fa of the key 42a can also be called by the actuator 57. After inserting the pin 46 In the case, the switch 38a is placed in a state where it conducts current so as to be connected in series with the switch 39. Nevertheless, the key 42a maintains its operating mode of the trigger function fa. By operating the actuator 57, the permanent magnet 59 approaches the switch 39 This causes the switch 39 to switch to its conducting current state, thereby sending a signal to the control system 62. The control system 62 then turns on the function fa, and when the actuator is operated again, the control system will turn off the function fa again. Same The operation mode can be applied to other functions than & these functions can be operated by the keys 42b to 42f and can be opened or closed by the actuator 57 as required. The operation mode is also applicable to the actuator 57 provided with the switch 39 '. In a variant design (not shown) of the function switch, the plug pin 46 is replaced with a set of adjustment screws, which are held in the jacks 4% to 45 (medium to the actuators 57, 57, The trigger function is selected. Set each adjustment screw 20 as a countersunk screw and have a head for engaging a standard screwdriver, so that they are similar to the jacks 45a to 45f when viewed from above or respectively as shown in FIG. 4 Plug pin 46 is similar. The external thread of the adjustment screw engages a complementary internal thread with a larger pitch in the sockets 45a to 45f. The cutout (on the screw head) extends horizontally (see position "45b" in Figure 4) In the case of the adjustment screw, turn the sockets 45 & to 45 [from the center 13 200530453 close enough, so that the contact end of the adjustment screw does not contact the plate 33. As shown in the previous figure 3 and 7 and As described for the pin 46, the associated switches 38a to 38f are in the disengaged position. If the adjusting screw is turned 90 clockwise, leaving the cutout in the vertical position (see • position 5 in Figure 4 "46"), The contact end is thus pressed against the associated plate 33, So that the related switches 38a to 38f are also switched to the above-mentioned contact position. In this way, one of the functions & can be preselected by the female adjustment screw, and then the function is activated by the actuators 57 and 57 '. Even Several function colors can be selected at the same time by changing the related adjustment screw turn to the contact position. The function of the actuators 57 and 57 (actuated) can be monitored by adjusting the position of the end cutout of the screw from 10. The cutout serves as a position marker. In another embodiment (not shown) of the function switch, a slide switch may be used instead of the pin 46 to select the function triggered by the actuators 57 and 57. The slide switch It can be slid over the switches 38a to 38f in such a way that the switches 38a to 38f that have been selected by the 15-position slide switch are switched from the separated position to the contact position. In this way, the pre-selection of (L), and then the function is activated by the actuators 57, 57. [Brief description of the drawings] Fig. 1 is a front view of a sewing machine including a function switch; 20 Fig. 2 is a detailed enlarged view of the sewing machine in Fig. 1; Fig. 3 is a line III-III in Fig. 2 Fig. 4 is a detailed enlarged view of the function switch in Fig. 2; Fig. 5 is a cross-sectional view taken on line VV in Fig. 4; Fig. 6 and the printed circuit board shown in Fig. 4 14 200530453 Figure 7 is another view of the printed circuit board of Figure 6 on line VII-VII in Figure 6, Figure 8 is a perspective view of a socket pin; Figure 9 FIG. Is a circuit diagram of a function switch; and FIG. 10 is a modified embodiment of the function switch corresponding to a contraction of FIG. 2

Small partial view. [Description of the main component symbols] 1 ... Initial sewing machine 2 ... Substrate 3 ... Pillar 4 ... Arm 5 ... Head 6 ... Arm shaft 7 ... Hand wheel 8 ... Needle bar 9 ... Sewing needle 10 ... Support 11 ... Tightener 12 ... Function switch 13, 14 ... Support holes 15, 16 ... Screw 17 ... Housing 18 ... Cavity 19, 20, 21 ... Screw 23 ... Printed circuit board 24 ... Printed circuit 25 ... Frame 25 26, 27 ... Recess 28 ... Plate 28 '... Middle contact 29 ... Support point 30 ... Strip conductor 31 ... Strip conductor 32 ... Contact surface 33 ... Plate 33' ... Contact 34 ... Strip conductor 35 ... Strip conductor 35 '... Contact surfaces 37a, 37b, 37c, 37d, 37e, 37f ... · Switches 38a, 38b, 38c, 38d, 38e, 38f · · Switches 39, 39' ... Switches 15 200530453 40, 41… strip conductor 42a > 42b '42c > 42 core 42e' 42f " key 43 ... rib 44 ... push rod

^ 45a, 45b, 45c, 45d, 45e, 45f " Cabinet L 46 ... Plug pin 47 ... Contact end 47 and a 48, 49 ... Surface 0 50 ... Free cut 51 ... ... edge 53, 53 '... support arm 54 ... operation lever 55 ... pivot 56 ... lower arm 57, 57' ... actuator 58 ... arm 59 ... permanent magnet 60 ... plate 61 ... cable 62 ... control system 63 ... cable 64… cable

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Claims (1)

200530453 10. Scope of patent application: 1. A sewing machine comprising a function switch with a plurality of operating elements for operating a switch connected by an electric wire to a sewing machine control system, and the switches assigned to the operating elements are arranged into 5 specific switch functions of the control system can be called, and the operating element is provided in a transition area between a sewing machine head and a sewing machine arm, wherein the function switch includes an extension into an operator's work area and communicates with An operation lever switch is an operation lever mechanically connected, and 1 wherein a switch among the switches assigned to a selected operation element of the operation element can be electrically connected to the operation lever switch through a switching system, so that The operation lever switches a switching function assigned to a selected operation element of the operation elements among the switching functions. 2. The sewing machine according to item 1 of the scope of patent application, characterized in that:-wherein the switch is unipolar and has a switch state which does not conduct electricity in the stop position;-wherein each operating element is mechanically connected to An operating element switch, wherein a second switch is assigned to each operating element switch, and the second switch is an integral part of the switching system; 20-wherein the second switch is connected to The operation lever switch; a switch in which the operation lever switch is connected in series to the switch state (plug pin) of the second switch to an activated state of the switch. 17 200530453 3. The sewing machine according to item 2 of the scope of patent application, wherein the switch system includes a plug pin 'the plug lock can be inserted into a socket and is visible from the outside, and through the plug pin An associated switch in the second switch may be switched to an activated state of the switch. 5 4. The sewing machine according to item 1 of the scope of patent application, wherein the switching element is provided in a housing, the housing is placed on the head of the sewing machine, and the housing is provided with the housing. A printed circuit board on which the switch is provided. 18