Machine shell of sewing machine

Abstract

The utility model provides a sewing machine casing, which comprises a main body and a support, the main body is fixed on the support, a placing groove is arranged on the support, a placing seat is rotatably connected in the placing groove, a support rod is fixedly connected on the placing seat, the placing seat and the support rod are coaxially arranged, and the main body is fixed on the support. A mounting hole is formed in the supporting rod in the axial direction of the supporting rod, a pressing rod is slidably connected into the mounting hole, sliding holes communicated with the mounting hole are formed in the side wall of the supporting rod, the multiple sliding holes are evenly distributed along the axis of the supporting rod, abutting rods are slidably connected into the sliding holes, rubber pads are fixedly connected to the abutting rods, and the rubber pads are fixedly connected to the supporting rod. The rubber pad abuts against the inner wall of the bobbin, the pressing rod moves in the direction away from the support, the abutting rod is made to move in the direction close to the bobbin through the elastic structure, and the purpose of replacing the bobbin conveniently is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sewing machine, in particular to a sewing machine's casing. BACKGROUND

[0002] Sewing machine is often used in sewing and weaving.

[0003] At present, the Chinese patent with the authorization announcement number CN203878328U discloses a sewing machine, which comprises a sewing machine body and a workbench, the sewing machine body is located on the workbench, the workbench is provided with a groove, and a tray for placing a wire is arranged in the groove, and the tray can rotate freely.

[0004] The wire used in sewing is placed in the tray, and the wire can rotate with the tray, so that the wire feeding is more smooth during the sewing process, and the phenomenon that the wire is pulled off or the cylinder with the wire is knocked down will not occur.

[0005] The wire is usually a yarn, and the yarn is wound on a bobbin, so that the bobbin with the yarn is sleeved on the center rod during use, and in order to consider the wear resistance, heat conductivity and moisture resistance, the bobbin is usually made of aluminum alloy. In order to drive the center rod to rotate, the bobbin can only be pressed down to embed the center rod into the bobbin, that is, the lower end of the bobbin is deformed to realize the fixation of the bobbin. When the yarn is used up, the surface of the bobbin is relatively smooth, and the friction between the bobbin and the center rod is relatively large, so that it is extremely inconvenient to pull the bobbin out of the center rod by holding the surface of the bobbin with the hand. UTILITY MODEL CONTENTS

[0006] Therefore, the utility model aims at providing a sewing machine casing to achieve the purpose of convenient replacement of the bobbin.

[0007] In order to solve the above technical problems, the technical scheme of the utility model is as follows: a sewing machine casing, which comprises a main body and a support, the main body is fixed on the support, a placing groove is formed in the support, a placing seat is rotationally connected in the placing groove, a supporting rod is fixedly connected on the placing seat, the placing seat and the supporting rod are coaxially arranged, an installation hole is formed in the supporting rod along the axial direction of the supporting rod, a pressing rod is slidably connected in the installation hole, a sliding hole is formed in the side wall of the supporting rod and communicated with the installation hole, a plurality of sliding holes are uniformly distributed along the axial center of the supporting rod, a contact rod is slidably connected in the sliding hole, a rubber pad is fixedly connected on the contact rod, the rubber pad is tightly contacted with the inner wall of the bobbin, and the pressing rod moves away from the support and moves the contact rod to the bobbin by the elastic structure.

[0008] The technology realizes that the pressure rod is pressed to separate the elastic structure and the resisting rod, the bobbin sleeve is arranged outside the supporting rod, the pressure rod is moved upward, the resisting rod is moved to the direction of the bobbin through the elastic structure, the rubber pad on the resisting rod is tightly contacted with the inner wall of the bobbin, and large friction force is generated to realize the bobbin positioning and make the bobbin replacement very convenient; when the yarn is unwound from the bobbin, the bobbin rotates, the bobbin drives the resisting rod to rotate through the rubber pad due to the friction force, the resisting rod drives the supporting rod to rotate through the inner wall of the sliding hole, and the supporting rod drives the placing seat to rotate, so that the yarn is smoothly unwound.

[0009] As a preferred scheme of the utility model, the elastic structure comprises an inclined block, a transmission inclined surface and an elastic piece, the inclined block is fixed to one end of the pressure rod close to the placing seat, the transmission inclined surface is arranged on one side of the resisting rod facing the placing seat, the inclined block is in contact with the transmission inclined surface, and the two ends of the elastic piece are connected with the bottom wall of the mounting hole and the inclined block respectively.

[0010] The technology realizes that when the pressure rod is loosened, the pressure rod is moved to the direction away from the placing seat due to the elastic force of the elastic piece, the inclined block is in contact with the transmission inclined surface, the resisting rod is moved along the sliding hole through the guiding effect of the transmission inclined surface, the resisting rod is moved to the direction of the bobbin, and the rubber pad on the resisting rod is tightly contacted with the inner wall of the bobbin; in the rotating process of the bobbin and the supporting rod, centrifugal force is generated, the connection between the rubber pad and the bobbin is more compact, and the stability is greatly improved.

[0011] As a preferred scheme of the utility model, the mounting hole is provided with a tension spring, the two ends of the tension spring are fixedly connected with the two resisting rods respectively, and the elasticity of the tension spring is smaller than that of the elastic piece.

[0012] The technology realizes that when the pressure rod is pressed, the elastic structure is separated from the resisting rod, the resisting rod is moved to the direction away from the bobbin through the tension of the tension spring, and the bobbin is pulled out of the supporting rod, so that the process is very labor-saving; after the bobbin is replaced, the pressure rod is loosened, the elastic piece drives the inclined block to move upward due to the fact that the elasticity of the tension spring is smaller than that of the elastic piece, and the inclined block drives the resisting rod to move.

[0013] As a preferred scheme of the utility model, the pressure rod is fixedly connected with a pressure disc at the end away from the placing seat, and the outer diameter of the pressure disc is greater than that of the pressure rod.

[0014] The technology realizes that the contact area with the hand is increased, and the process of pressing the pressure disc is more comfortable.

[0015] As a preferred scheme of the utility model, the support is fixedly connected with a slide rail, the slide rail is slidably connected with a sliding block, the sliding block is fixedly connected with a vertical rod, the vertical rod is sleeved with a steering wheel, the steering wheel is provided with a wire slot, the wire slot is coaxially arranged with the steering wheel, the sliding block is connected with the slide rail through a positioning structure, and the placing seat is located at one end of the slide rail.

[0016] The technical scheme realizes the following effects: the sliding block is moved along the length direction of the slide rail, and then the sliding block is positioned through the positioning structure, so that the position of the steering wheel is adjusted, and the yarn is wound around the steering wheel after being unwound from the bobbin, so that the plurality of yarns are not easily entangled together.

[0017] As a preferred scheme of the utility model, the positioning structure comprises a positioning recess, an elastic sheet, a positioning column and a placing recess, a plurality of positioning recesses are arranged on the side wall of the slide rail and are arranged along the length direction of the slide rail, the placing recess is arranged on the inner wall of the sliding block, the positioning column is slidably connected in the placing recess and has a hemispherical end, the end of the positioning column is used for being embedded in the positioning recess, and the elastic sheet is located in the placing recess and abuts against the inner wall of the placing recess at one end and abuts against the positioning column at the other end.

[0018] The technical scheme realizes the following effects: the sliding block is moved along the length direction of the slide rail, and then the sliding block is positioned through the positioning structure, so that the position of the steering wheel is adjusted, and the yarn is wound around the steering wheel after being unwound from the bobbin, so that the plurality of yarns are not easily entangled together.

[0019] As a preferred scheme of the utility model, the slide rail is fixedly connected with a baffle at two ends, and the baffle is used for abutting against the sliding block.

[0020] The technical scheme realizes the following effects: the sliding block is moved along the length direction of the slide rail, and then the sliding block is positioned through the positioning structure, so that the position of the steering wheel is adjusted, and the yarn is wound around the steering wheel after being unwound from the bobbin, so that the plurality of yarns are not easily entangled together. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is an external structure schematic view in the embodiment;

[0022] Figure 2 It is a structure schematic view of the inclined block;

[0023] Figure 3 It is a cross section schematic view of the elastic structure;

[0024] Figure 4 It is a cross section schematic view of the positioning structure.

[0025] 11, main body; 12, support; 2, placing groove; 21, placing seat; 3, support rod; 31, mounting hole; 32, sliding hole; 33, abutting rod; 34, rubber pad; 4, pressing rod; 41, pressing disc; 5, elastic structure; 51, inclined block; 52, transmission inclined surface; 53, elastic piece; 54, tension spring; 6, sliding rail; 61, sliding block; 7, positioning structure; 71, positioning concave hole; 72, elastic sheet; 73, positioning column; 74, placing concave hole; 8, vertical rod; 81, steering wheel; 82, wire slot; 9, baffle. DETAILED DESCRIPTION

[0026] The specific embodiments of the utility model are further described in detail below in combination with the drawings, so that the technical scheme of the utility model is easier to understand and master.

[0027] A sewing machine shell, comprising a main body 11 and a support 12, the main body 11 is fixed on the support 12.

[0028] A placing groove 2 is formed in the end of the support 12, and a placing seat 21 is arranged in the placing groove 2, and the placing seat 21 is rotatably connected in the placing groove 2 through a bearing. The support rod 3 is fixedly connected to the placing seat 21, and the placing seat 21 and the support rod 3 are coaxially arranged.

[0029] The support rod 3 is provided with a mounting hole 31 with a circular cross section along the axial direction of the support rod 3, and a pressing rod 4 is slidably connected in the mounting hole 31, and the outer diameter of the pressing rod 4 is smaller than the inner diameter of the mounting hole 31. The mounting hole 31, the support rod 3 and the pressing rod 4 are coaxially arranged. A plurality of sliding holes 32 are formed in the side wall of the support rod 3 and communicate with the mounting hole 31, and the sliding holes 32 are evenly distributed along the axis of the support rod 3. An abutting rod 33 is slidably connected in each sliding hole 32, and the cross section of the sliding hole 32 is square. A rubber pad 34 is fixedly connected to the end of the abutting rod 33, and the rubber pad 34 abuts against the inner wall of the bobbin.

[0030] The pressing rod 4 moves away from the support 12 and moves the abutting rod 33 towards the bobbin through the elastic structure 5. The elastic structure 5 comprises an inclined block 51, a transmission inclined surface 52 and an elastic piece 53. The inclined block 51 is fixed to one end of the pressing rod 4 close to the placing seat 21, and the inclined block 51 and the pressing rod 4 are coaxially arranged. The transmission inclined surface 52 is formed on one side of the abutting rod 33 facing the placing seat 21, and the upper end of the inclined block 51 is used to abut against the transmission inclined surface 52. The elastic piece 53 is connected to the bottom wall of the mounting hole 31 and the inclined block 51 at both ends. The elastic piece 53 is a spring.

[0031] A tension spring 54 is arranged in the mounting hole 31, and the two ends of the tension spring 54 are fixedly connected to the two abutting rods 33. The elasticity of the tension spring 54 is smaller than the elasticity of the elastic piece 53.

[0032] When installing, first place the elastic member 53 in the mounting hole 31, and then place the inclined block 51 in the mounting hole 31 after fixing the pressing rod 4, so that the lower end of the inclined block 51 is in contact with the elastic member 53. After pressing the pressing rod 4, the abutting rod 33 is slidingly connected in the sliding hole 32, so that the transmission inclined surface 52 is directed towards the inclined block 51, and the transmission inclined surface 52 is in contact with the upper end of the inclined block 51. Then, the pressing rod 4 is released, the inclined block 51 is moved upwards by the elastic force of the elastic member 53, the elastic force of the elastic member 53 is reduced, the abutting rod 33 is moved away from the pressing rod 4 by the guiding action of the transmission inclined surface 52, the tension spring 54 is stretched and the elastic force gradually increases, until the elastic force of the elastic member 53 and the elastic force of the tension spring 54 are equal, the abutting rod 33 stops moving, and the distance between the end portions of the abutting rod 33 is greater than the inner diameter of the bobbin at this time.

[0033] The end of the pressing rod 4 away from the placement seat 21 is fixedly connected with a pressing disc 41, and the outer diameter of the pressing disc 41 is greater than the outer diameter of the pressing rod 4.

[0034] The pressing disc 41 is pressed, the inclined block 51 is moved downwards, the abutting rod 33 is moved towards the pressing rod 4 by the tension of the tension spring 54, and then the bobbin with the yarn wound thereon is sleeved outside the abutting rod 33, and then the pressing disc 41 is released. The inclined block 51 is moved upwards by the elastic force of the elastic member 53, the abutting rod 33 is moved towards the bobbin, the rubber pad 34 is in contact with the inner wall of the bobbin, and at this time, the elastic force of the elastic member 53 is greater than the elastic force of the tension spring 54.

[0035] The support 12 is fixedly connected with a sliding rail 6, the sliding rail 6 is slidingly connected with a sliding block 61, and the sliding block 61 is connected with the sliding rail 6 through a positioning structure 7. The positioning structure 7 comprises positioning recesses 71, elastic pieces 72, positioning columns 73 and placement recesses 74. A plurality of positioning recesses 71 are formed on the side wall of the sliding rail 6 and are arranged along the length direction of the sliding rail 6.

[0036] The placement recess 74 is formed on the inner wall of the sliding block 61, the positioning column 73 is slidingly connected in the placement recess 74 and has a hemispherical end portion, and the end portion of the positioning column 73 is used for embedding in the positioning recess 71. The elastic piece 72 is located in the placement recess 74 and is in contact with the inner wall of the placement recess 74 at one end and with the positioning column 73 at the other end. The elastic piece 72 is a spring.

[0037] The support 12 is fixedly connected with a sliding rail 6, the sliding rail 6 is slidingly connected with a sliding block 61, and the sliding block 61 is connected with the sliding rail 6 through a positioning structure 7. The positioning structure 7 comprises positioning recesses 71, elastic pieces 72, positioning columns 73 and placement recesses 74. A plurality of positioning recesses 71 are formed on the side wall of the sliding rail 6 and are arranged along the length direction of the sliding rail 6.

[0038] The sliding rail 6 is fixedly connected with a baffle 9 at both ends, and the baffle 9 is used for being in contact with the sliding block 61. The cross section of the sliding rail 6 is T-shaped.

[0039] Of course, the above is only a typical example of the present application, in addition to this, the present application can have other various specific embodiments, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. A sewing machine housing, comprising a main body (11) and a support (12), wherein the main body (11) is fixed on the support (12), the support (12) has a placement groove (2), a placement seat (21) is rotatably connected in the placement groove (2), a support rod (3) is fixedly connected to the placement seat (21), and the placement seat (21) and the support rod (3) are coaxially arranged, characterized in that: The support rod (3) is provided with a mounting hole (31) along the axial direction of the support rod (3), a pressure rod (4) is slidably connected in the mounting hole (31), a sliding hole (32) is formed in the side wall of the support rod (3) and communicates with the mounting hole (31), a plurality of sliding holes (32) are uniformly distributed along the axial direction of the support rod (3), a contact rod (33) is slidably connected in the sliding hole (32), a rubber pad (34) is fixedly connected to the contact rod (33), the rubber pad (34) is in abutment with the inner wall of the bobbin, and the pressure rod (4) moves away from the support base (12) and moves the contact rod (33) to move towards the bobbin through the elastic structure (5).

2. A cabinet for a sewing machine according to claim 1, characterized in that: The elastic structure (5) comprises an inclined block (51), a transmission inclined surface (52) and an elastic member (53), the inclined block (51) is fixed to one end of the pressure rod (4) close to the placing base (21), the transmission inclined surface (52) is formed on one side of the contact rod (33) facing the placing base (21), the inclined block (51) is in abutment with the transmission inclined surface (52), and the two ends of the elastic member (53) are connected with the bottom wall of the mounting hole (31) and the inclined block (51) respectively.

3. A cabinet for a sewing machine according to claim 2, characterized in that: A tension spring (54) is arranged in the mounting hole (31), the two ends of the tension spring (54) are fixedly connected with the two contact rods (33) respectively, and the elasticity of the tension spring (54) is smaller than that of the elastic member (53).

4. A cabinet for a sewing machine according to claim 1 or 2 or 3, characterized in that: One end of the pressure rod (4) away from the placing base (21) is fixedly connected with a pressure disc (41), and the outer diameter of the pressure disc (41) is greater than the outer diameter of the pressure rod (4).

5. A cabinet for a sewing machine according to claim 1 or 2 or 3, characterized in that: The support base (12) is fixedly connected with a sliding rail (6), the sliding rail (6) is slidably connected with a sliding block (61), the sliding block (61) is fixedly connected with a vertical rod (8), the vertical rod (8) is sleeved with a steering wheel (81), the steering wheel (81) is provided with a wire groove (82), the wire groove (82) is coaxially arranged on the steering wheel (81), the sliding block (61) is connected with the sliding rail (6) through a positioning structure (7), and the placing base (21) is located at one end of the sliding rail (6).

6. A cabinet for a sewing machine according to claim 5, characterized in that: The positioning structure (7) comprises a positioning recess (71), an elastic sheet (72), a positioning column (73) and a placing recess (74), a plurality of positioning recesses (71) are formed in the side wall of the sliding rail (6) and are arranged along the length direction of the sliding rail (6), the placing recess (74) is formed in the inner wall of the sliding block (61), the positioning column (73) is slidably connected in the placing recess (74) and has a hemispherical end, the end of the positioning column (73) is used for being embedded in the positioning recess (71), and the elastic sheet (72) is located in the placing recess (74) and abuts against the inner wall of the placing recess (74) at one end and abuts against the positioning column (73) at the other end.

7. The cabinet for a sewing machine according to claim 5, wherein: The two ends of the sliding rail (6) are fixedly connected with a baffle (9), and the baffle (9) is used for abutting against the sliding block (61).

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