Sewing machine rack firm in connection

Abstract

The utility model discloses a firmly connected sewing machine frame which comprises a bottom support, a bottom cross beam and a supporting column, the bottom of the supporting column is provided with two correspondingly arranged installation extending parts, a clamping groove is formed between the two installation extending parts, the clamping groove is arranged on the bottom support in a clamping mode, and the bottom cross beam is arranged on the bottom support. Screw connecting holes are formed in the two ends of the bottom cross beam, transverse penetrating holes are formed in the positions, located in the clamping grooves, of the bottom support, and locking screws penetrate through the transverse penetrating holes and the installation extending parts to be connected with the screw connecting holes of the bottom cross beam. The clamping grooves for connection are formed in the bottoms of the supporting columns, after the clamping grooves are clamped into the bottom supports, the multiple screws are adopted to lock the clamping grooves from the side portions, the clamping grooves are in threaded connection with the bottom cross beams, the multiple locking screws can form locking pulling force on the bottom cross beams, and the supporting columns, the bottom cross beams and the bottom supports which are well fixed through the multiple screws form a connection whole. And the whole structure of the bracket is firmer.

Description

Technical Field

[0001] The utility model relates to sewing equipment, in particular to a sewing machine frame with firm connection. Background Art

[0002] The sewing machine bracket is used for installing a sewing machine head and can support a certain height for the convenience of operators. The existing sewing machine brackets generally include a support column, a bottom bracket and a bottom cross beam. The two ends of the bottom cross beam are locked to the side of the bottom bracket by screws. Since the mounting piece for connecting the screws on the bottom cross beam is relatively thin, when one end of the bracket is lifted and rotated by a certain angle, torque will be formed on the mounting piece on the bottom cross beam. When the torque is large, it will cause the disadvantage of tearing the mounting piece, resulting in the overall instability of the bracket. The support column is generally welded to the bottom bracket by welding, and this welding method cannot be disassembled, resulting in inconvenient transportation and handling. Summary of the Invention

[0003] In order to overcome the disadvantages and deficiencies existing in the prior art, the purpose of the utility model is to provide a sewing machine frame with firm connection. The sewing machine frame of the utility model is used for a standing sewing machine for automobile seat covers.

[0004] The purpose of the utility model is achieved by the following technical solutions: A sewing machine frame with firm connection, including a bottom bracket, a bottom cross beam and a support column. Two corresponding mounting protruding parts are arranged at the bottom of the support column, and a clamping groove is formed between the two mounting protruding parts. The clamping groove is clamped on the bottom bracket. Screw connection holes are arranged at both ends of the bottom cross beam, and a transverse through hole is arranged at the position of the bottom bracket corresponding to the clamping groove. A locking screw passes through the transverse through hole and the mounting protruding part and is connected to the screw connection hole of the bottom cross beam. The bottom bracket, the bottom cross beam and the support column of the utility model are all detachable structures. Multiple screws can be used to lock the bottom bracket, the bottom cross beam and the support column. When the locking screw is screwed horizontally to the bottom cross beam, it has a pulling force on the bottom cross beam, which can improve the overall strength and firmness of the bracket.

[0005] As an improvement of the sewing machine frame with firm connection of the utility model, there are three locking screws, and the three locking screws are arranged in a triangular pattern. The three locking screws all pass through the transverse through hole and the mounting protruding part and are connected to the screw holes of the bottom cross beam.

[0006] As an improvement of the sewing machine frame with firm connection of the utility model, two bottom brackets are arranged at intervals in parallel. The two ends of the bottom cross beam are respectively connected to the bottom brackets by the locking screws. Casters are arranged at both ends of the two bottom brackets, and the casters can rotate 360 degrees.

[0007] As an improvement of the sewing machine frame with firm connection of the present utility model, the support column includes a movable support column and a fixed support column. Both the movable support column and the fixed support column are square metal column bodies, and both the movable support column and the fixed support column have cavities. The movable support column extends into the fixed support column, and a locking and adjusting component is used to fix the movable support column. A relief hole is provided on one side of the upper end of the movable support column, and a mounting hole is provided on one side of the fixed support column corresponding to the position of the relief hole. When the movable support column extends into the fixed support column to the limit position, the mounting hole corresponds to the relief hole. A long strip-shaped height adjustment hole is provided on the outer side surface of the movable support column. By providing a small-range relief hole and mounting hole on the movable support column and the fixed support column, it is convenient to install the nut fixing plate, and at the same time, it can prevent the safety hazard of the shear action formed by the downward sliding of the movable support column and the mounting hole. And it can improve the strength of the support column. When the upper end of the movable support column extends out of the fixed support column, the mounting hole will be blocked by the side surface of the movable support column, and people's hands cannot reach in through the mounting hole. When the movable support slides down, since the relief hole is provided at the upper end, only when the movable support slides down to the limit position, the relief hole corresponds to the mounting hole. At this time, even if people's hands reach into the mounting hole, they will not be injured.

[0008] As an improvement of the sewing machine frame with firm connection of the present utility model, the relief hole is in a long strip shape, and the upper end of the relief hole extends all the way to the upper edge of the movable support column.

[0009] As an improvement of the sewing machine frame with firm connection of the present utility model, the locking and adjusting component includes a screw and a nut fixing plate. A screw hole is provided on the nut fixing plate, and the nut fixing plate is located on the inner side surface of the cavity of the movable support column. The screw penetrates from the outer side part of the fixed support column and passes through the long strip-shaped height adjustment hole to be connected with the nut fixing plate.

[0010] As an improvement of the sewing machine frame with firm connection of the present utility model, two screws are provided, and two screw holes are provided. The two screw holes are respectively provided at both ends of the nut fixing plate. The two screws respectively penetrate from the outer side part of the fixed support column and pass through the long strip-shaped height adjustment hole to be connected with the nut fixing plate.

[0011] As an improvement of the sewing machine frame with firm connection of the present utility model, two through holes are provided at intervals on the outer side surface of the fixed support column, and the through holes are circular or strip-shaped.

[0012] As an improvement of the sewing machine frame with firm connection of the present utility model, a gasket is also penetrated on the screw, and the gasket is located on the outer side surface of the fixed support column.

[0013] As an improvement of the sewing machine frame with firm connection of the present utility model, it further includes a pedal switch mounting plate. Position adjustment holes are provided on the upper planes of both of the bottom brackets. Connecting plates are respectively provided at both ends of the pedal switch mounting plate. The connecting plates are locked to the position adjustment holes by screws. A pedal switch mounting groove is provided in the length direction of the pedal switch mounting plate. L-shaped connectors are respectively provided on both sides of the pedal switch. The L-shaped connectors are connected to the pedal switch mounting groove by screws.

[0014] As an improvement of the sewing machine frame with firm connection of the present utility model, it further includes a rear connecting plate. Clamping plates are respectively provided at both ends of the rear connecting plate. The clamping plates can be clamped onto the fixed support columns and fixed with screws.

[0015] It further includes a speed regulator. The speed regulator is installed on the rear connecting plate through a connecting side plate. A kidney-shaped hole is provided on the rear connecting plate. The speed regulator can adjust its installation position through the kidney-shaped hole. The pedal switch controls the speed regulator through a connecting rod.

[0016] The beneficial effects of the present utility model are as follows: By providing a connecting card slot at the bottom of the support column, after the card slot is inserted into the bottom bracket, multiple screws are locked from the side and screwed to the bottom cross beam. The multiple locking screws can form a locking tension on the bottom cross beam. The support column, bottom cross beam, and bottom bracket fixed by multiple screws form a connecting whole, making the overall structure of the bracket more firm. When one end of the bracket is lifted and rotated, no torsion will be formed (only one end rotates while the other end does not rotate, forming torsion), but the whole bracket will rotate accordingly, and the strength of the whole bracket is higher. Description of the Drawings

[0017] Figure 1 is a perspective view of the present utility model;

[0018] Figure 2 is an exploded schematic view of the present utility model;

[0019] Figure 3 is a structural schematic diagram of another embodiment of the present utility model;

[0020] Figure 4 is a structural schematic diagram of the locking and adjusting assembly of the present utility model;

[0021] The reference numerals are: 1, movable support column; 2, fixed support column; 3, locking and adjusting assembly; 4, relief hole; 5, mounting hole; 6, long strip-shaped height adjusting hole; 7, perforation; 8, mounting extension; 9, card slot; 10, bottom bracket; 11, bottom cross beam; 12, pedal switch mounting plate; 13, position adjusting hole; 14, connecting plate; 15, pedal switch mounting groove; 16, pedal switch; 17, L-shaped connecting piece; 18, rear connecting plate; 19, clamping plate; 20, speed governor; 21, connecting side plate; 22, kidney-shaped hole; 23, connecting rod; 24, table top plate; 31, screw; 32, nut fixing plate; 33, screw hole; 34, gasket; 35, locking screw; 36, caster wheel. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0024] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0025] Such as Figures 1-4As shown in the figure, a sewing machine frame with firm connection includes a bottom bracket 10, a bottom cross beam 11 and support columns. The bottom of the support columns is provided with two correspondingly arranged mounting protruding parts 8, and a clamping groove 9 is formed between the two mounting protruding parts. The clamping groove 9 is clamped on the bottom bracket 10. Both ends of the bottom cross beam 11 are provided with screw connection holes. The bottom bracket 10 is provided with a horizontal through hole at the position of the clamping groove 9. A locking screw 35 passes through the horizontal through hole and the mounting protruding part 8 and is connected to the screw connection hole of the bottom cross beam 11. The bottom bracket, the bottom cross beam and the support columns of the present utility model are all detachable structures. Multiple screws can be used to lock the bottom bracket 10, the bottom cross beam 11 and the support columns. When the locking screw 35 is horizontally screwed to the bottom cross beam 11, it has a pulling force on the bottom cross beam 11, which can improve the overall strength and firmness of the bracket.

[0026] Preferably, there are three locking screws 35, and the three locking screws 35 are arranged in a triangular pattern. The three locking screws 35 all pass through the horizontal through hole and the mounting protruding part and are connected to the screw holes of the bottom cross beam 11.

[0027] Preferably, two bottom brackets 10 are arranged at intervals in parallel. Both ends of the bottom cross beam 11 are respectively connected to the bottom brackets 10 through locking screws 35. Casters 36 are provided at both ends of the two bottom brackets 10, and the casters 36 can rotate 360 degrees.

[0028] The support column includes a movable support column 1 and a fixed support column 2. The clamping groove 9 is arranged at the bottom of the fixed support column 2. Both the movable support column 1 and the fixed support column 2 are square metal column bodies. Both the movable support column 1 and the fixed support column 2 have cavities. The movable support column 1 extends into the fixed support column 2, and a locking and adjusting assembly 3 is used to fix the movable support column 1. A relief hole 4 is provided on one side of the upper end of the movable support column 1. An installation hole 5 is provided on one side of the fixed support column 2 corresponding to the relief hole. When the movable support column 1 extends into the fixed support column 2 to the limit position, the installation hole 5 corresponds to the relief hole 4. A long strip-shaped height adjustment hole 6 is provided on the outer side surface of the movable support column 1. By providing a small range of relief holes 4 and installation holes 5 on the movable support column 1 and the fixed support column 2, it is convenient to install the nut fixing plate, and at the same time, it can prevent the safety hazard of the shear action formed by the downward sliding of the movable support column 1 and the installation hole 5. And it can improve the strength of the support column. When the upper end of the movable support column 1 extends out of the fixed support column, the installation hole 5 will be blocked by the side surface of the movable support column 1, and people's hands cannot reach in through the installation hole. When the movable support 1 slides downward, since the relief hole 4 is arranged at the upper end, only when the movable support 1 slides downward to the limit position, the relief hole 4 corresponds to the installation hole 5. At this time, even if people's hands reach into the installation hole 5, they will not be injured. A table top 24 is supported by the two movable support columns 1 together.

[0029] Preferably, the relief hole 4 is elongated, and the upper end of the relief hole 4 extends all the way to the upper edge of the movable support column 1. When the relief hole 4 corresponds to the mounting hole 5, the nut fixing plate 32 extends into the cavity of the movable support column 1 from the mounting hole 5 and the relief hole 4, and the screw 31 extends into the cavity from the outside of the fixed support column 2 and is screwed to the nut fixing plate. When it is necessary to adjust the height of the movable support column 1, loosen the screw, and the movable support column 1 can slide up and down. When the required height is adjusted, tighten the screw to lock the movable support column 1.

[0030] Preferably, the locking and adjusting assembly 3 includes a screw 31 and a nut fixing plate 32. The nut fixing plate 32 is provided with a threaded hole 33. The nut fixing plate 32 is located on the inner side surface of the cavity of the movable support column 1. The screw 31 penetrates into the cavity from the outer side of the fixed support column 2 and is connected to the nut fixing plate 32 through the elongated height adjusting hole 6.

[0031] Preferably, two screws 31 are provided, and two threaded holes 33 are provided. The two threaded holes 33 are respectively arranged at both ends of the nut fixing plate 32. The two screws 31 respectively penetrate into the cavity from the outer side of the fixed support column 1 and are connected to the nut fixing plate 32 through the elongated height adjusting hole 6.

[0032] Preferably, two through holes 7 are provided at intervals on the outer side surface of the fixed support column 2. The through holes 7 are circular or elongated. As shown in Figure 1 the through hole 7 is circular, Figure 3 and in the through hole 7 is elongated, and the elongated through hole 7 can adjust the installation position of the screw 31.

[0033]

[0034] Preferably, a pedal switch mounting plate 12 is further included;

[0035] Position adjusting holes 13 are provided on the upper planes of both bottom brackets 10. Connecting plates 14 are respectively provided at both ends of the pedal switch mounting plate 12. The connecting plates 14 are locked to the position adjusting holes 13 by screws. A pedal switch mounting groove 15 is provided in the length direction of the pedal switch mounting plate 12. L-shaped connectors 17 are respectively provided on both sides of the pedal switch 16. The L-shaped connectors 17 are connected to the pedal switch mounting groove 15 by screws. The pedal switch mounting groove 15 can realize the position adjustment of the pedal switch 16.

[0036] Preferably, a rear connecting plate 18 is further included. Clamping plates 19 are respectively provided at both ends of the rear connecting plate 18. The clamping plates 19 can be clamped onto the fixed support column 2 and fixed with screws;

[0037] It further includes a speed governor 20, which is installed on the rear connecting plate 18 through a connecting side plate 21. There are oblong holes 22 provided on the rear connecting plate 18, and the speed governor 20 can adjust its installation position through the oblong holes 22. The pedal switch 16 controls the speed governor 20 through a connecting rod 23.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and structures of the present invention. The scope of the present invention is defined by the appended claims and their equivalent scope.

Claims

1. A firmly connected sewing machine frame, characterized in that: It includes a bottom bracket, a bottom cross beam and a support column, wherein two corresponding mounting extensions are provided at the bottom of the support column, a slot is formed between the two mounting extensions, the slot is clamped on the bottom bracket, screw connection holes are provided at both ends of the bottom cross beam, and a transverse through hole is provided at the position of the bottom bracket at the slot, and a locking screw passes through the transverse through hole and the mounting extension to connect with the screw connection hole of the bottom cross beam.

2. The firmly connected sewing machine frame according to claim 1, characterized in that: There are three locking screws, which are arranged in a triangle shape, and all of the three locking screws pass through the transverse through-hole and the mounting extension to be connected with the screw holes of the bottom cross beam.

3. The firmly connected sewing machine frame according to claim 2, characterized in that: Two bottom brackets are arranged in parallel at intervals, and both ends of the bottom crossbeam are respectively connected to the bottom brackets through the locking screws. Both ends of the two bottom brackets are provided with casters, and the casters can rotate 360 ​​degrees.

4. The firmly connected sewing machine frame according to claim 3, characterized in that: The support column comprises a movable support column and a fixed support column, the movable support column extends into the fixed support column, and the movable support column is fixed by a locking adjustment assembly; A clearance hole is provided on one side of the upper end of the movable support column, and a mounting hole is provided on one side of the fixed support column at a position corresponding to the clearance hole. When the movable support column is extended to the extreme position of the fixed support column, the mounting hole corresponds to the clearance hole, and a long strip height adjustment hole is provided on the outer side surface of the movable support column.

5. The firmly connected sewing machine frame according to claim 4, characterized in that: The clearance hole is in the shape of an elongated strip, and the upper end of the clearance hole extends all the way to the upper edge of the movable supporting column.

6. The firmly connected sewing machine frame according to claim 5, characterized in that: The locking adjustment assembly includes a screw and a nut fixing plate, the nut fixing plate is provided with a screw hole, the nut fixing plate is located on the inner side of the cavity of the movable support column, the screw is inserted from the outer side of the fixed support column, and passes through the long strip height adjustment hole to connect with the nut fixing plate.

7. The firmly connected sewing machine frame according to claim 6, characterized in that: The two screws are provided, and the two screw holes are provided, and the two screw holes are respectively provided at two ends of the nut fixing plate, and the two screws are respectively inserted from the outer side of the fixed support column, and pass through the long strip height adjustment hole to be connected with the nut fixing plate; A gasket is also provided on the screw, and the gasket is located on the outer side of the fixed support column.

8. The firmly connected sewing machine frame according to claim 7, characterized in that: The outer side surface of the fixed support column is provided with two through holes at intervals, and the through holes are circular or elongated.

9. The firmly connected sewing machine frame according to claim 8, characterized in that: It also includes a pedal switch mounting plate; the upper planes of the two bottom brackets are each provided with a position adjustment hole, and connecting plates are respectively provided at both ends of the pedal switch mounting plate, and the connecting plates are screwed to the position adjustment holes, and a pedal switch mounting groove is provided in the length direction of the pedal switch mounting plate, and L-shaped connecting pieces are respectively provided on both sides of the pedal switch, and the L-shaped connecting pieces are connected to the pedal switch mounting groove by screws.

10. The firmly connected sewing machine frame according to claim 9, characterized in that: It also includes a rear connecting plate, with clamping plates at both ends of the rear connecting plate, which can be clamped into the fixed support column and fixed with screws; It also includes a speed regulator, which is mounted on the rear connecting plate through a connecting side plate, and the pedal switch controls the speed regulator through a connecting rod.

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