CN215829045U

CN215829045U - Backstitch wrench mechanism of sewing machine

Info

Publication number: CN215829045U
Application number: CN202122008039.6U
Authority: CN
Inventors: 李质彬; 林群; 连泮忠; 刘冰
Original assignee: Qixing Intelligent Technology Co Ltd
Current assignee: Qixing Intelligent Technology Co Ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-02-15
Anticipated expiration: 2031-08-24

Abstract

The application specifically provides a backstitch spanner mechanism of sewing machine, concretely relates to sewing machine manufacturing technical field, has the aircraft nose, spanner subassembly and control box, its characterized in that still has the potentiometre subassembly, and the spanner subassembly makes the potentiometre subassembly produce the signal of telecommunication and transmit to the control box, carries out the backstitch action by the driving motor of control box control sewing machine, and the driving gear on the spanner subassembly is connected with the driven gear meshing of potentiometre subassembly, and the driven gear connects the potentiometre. The induction of this application adopts the potentiometre to make the response reliable and stable, does not receive environmental factor to disturb, has the advantage that the reaction is fast, not fragile, in addition, the scheme that this application will be realized is based on what sewing machine's control system controlled down and is realized.

Description

Backstitch wrench mechanism of sewing machine

Technical Field

The application specifically provides a backstitch spanner mechanism of sewing machine, concretely relates to sewing machine manufacturing technical field.

Background

Both the front sewing and the back sewing are indispensable sewing processes in the sewing process of the sewing machine. In backstitch mechanism, present backstitch spanner is mechanical structure mostly, is provided with magnet steel and hall usually between backstitch spanner and circuit board, and the response that implements between hall and the magnet steel through backstitch spanner pushes down realizes backstitch work, because the unstable condition of work can appear between long-time work magnet steel and the hall, environmental factor also can lead to the response of backstitch spanner malfunctioning. In addition, because the backstitch spanner needs to be provided with the magnetic steel, the backstitch spanner needs to be machined to meet the positioning requirement of the magnetic steel, and the machining for positioning the magnetic steel enables the manufacturing cost to be correspondingly increased.

Disclosure of Invention

To the not enough among the prior art, the technical problem that this application will solve lies in providing a backstitch spanner mechanism of sewing machine, has the aircraft nose, spanner subassembly and control box, its characterized in that still has the potentiometre subassembly, and spanner subassembly makes the potentiometre subassembly produce the signal of telecommunication and transmit to the control box, carries out the backstitch action by the driving motor of control box control sewing machine.

Preferably, a driving gear on the wrench assembly is meshed with a driven gear of the potentiometer assembly, and the driven gear is connected with the potentiometer.

Preferably, the backstitch wrench of the wrench assembly takes the shaft pin as a rotating shaft, the shaft pin is sleeved with the elastic part, the driving gear takes the shaft pin as the rotating shaft, and the driving gear is fixed on the backstitch wrench by a screw.

Preferably, the potentiometer is installed on the potentiometer base, the upper portion of the potentiometer is fixed on the potentiometer base through a dust cover, the potentiometer base is fixed on the side edge of the machine head, and the driven gear penetrates through the dust cover to be connected with the potentiometer.

Preferably, the shaft position pin is sleeved with a torsion spring, and the backstitch wrench is abutted against the upper limiting pin under the elastic action of the torsion spring and is in a forward sewing state of the sewing machine.

Preferably, the sewing machine performs a backstitch work when the backstitch wrench is pressed down against the lower limit pin.

Preferably, the shaft pin is fixed on the side of the handpiece by a screw thread at the front end of the shaft pin.

Preferably, the wrench assembly and the potentiometer assembly are mounted to the side of the handpiece.

Preferably, the upper limit pin and the lower limit pin are fixed on the side edge of the machine head, and a movable backstitch wrench is arranged between the upper limit pin and the lower limit pin.

Compared with the prior art, the beneficial effects of this application are: make the potentiometre subassembly produce the signal of telecommunication and transmit the control box through spanner subassembly, the driving gear on the spanner subassembly is connected with the driven gear meshing of potentiometre subassembly, and driven gear connects the potentiometre, and spanner subassembly pushes down or loosens and makes the potentiometre subassembly produce the signal of telecommunication and transmit the control box, carries out the backstitch action by the driving motor of control box control sewing machine. The response of this application adopts the potentiometre to make the response reliable and stable, does not receive environmental factor to disturb, has the fast and not fragile advantage of reaction, and in addition, the scheme that this application will be realized is based on what sewing machine's control system controlled down and is realized.

Drawings

FIG. 1 is a schematic view of a backstitch wrench mechanism assembly of a sewing machine according to the present application;

FIG. 2 is a schematic view of a wrench connection of a backstitch wrench mechanism of a sewing machine according to the present application;

FIG. 3 is a schematic view of a potentiometer connection of a backstitch wrench mechanism of a sewing machine according to the present application;

FIG. 4 is a flow chart illustrating the operation of a backstitch wrench mechanism of a sewing machine according to the present application.

Reference numerals: the automatic potentiometer comprises a machine head 11, an upper limit pin 112, a lower limit pin 113, a potentiometer assembly 12, a potentiometer base 121, a potentiometer 122, a dust cover 123, a driven gear 125, a wrench assembly 13, a backstitch wrench 131, a driving gear 132, a torsion spring 133 and a shaft pin 134.

Detailed Description

Preferred embodiments of the present application will be described in detail below with reference to fig. 1-4, so that the advantages and features of the present application can be more easily understood by those skilled in the art, and the scope of protection of the present application will be clearly and clearly defined, and these embodiments are only for illustrating the present invention and are not limited thereto.

In the picture, this application backstitch spanner mechanism of sewing machine is including sewing machine aircraft nose 11, spanner subassembly 13, potentiometre subassembly 12 and control box, spanner subassembly 13 and potentiometre subassembly 12 are installed at the side of aircraft nose 11, and manual pressure acts on spanner subassembly 13, is electric signal connection between potentiometre subassembly 12 and the control box, and spanner subassembly 13 pushes down or loosens and makes potentiometre subassembly 12 produce the signal of telecommunication and transmit to the control box, carries out the backstitch action by the driving motor of control box control sewing machine, and this application adopts the potentiometre response to have the response reliable and stable, does not receive environmental factor interference, has the fast characteristics of reaction.

In the above embodiment, the wrench assembly 13 has a backstitch wrench 131, a driving gear 132, a torsion spring 133, a shaft pin 134, and the like, the backstitch wrench 131 uses the shaft pin 134 as a rotation shaft, and the shaft pin 134 is fixed on the side of the handpiece 11 by a thread at the front end thereof. The shaft pin 134 is sleeved with an elastic piece, the elastic piece is required to keep the backstitch wrench 131 always towards the upper limit pin 112, the shaft pin 134 is sleeved with a torsion spring 133, the torsion spring 133 enables the backstitch wrench 131 to have elastic force always towards the upper limit pin 112, and the technical effects are the same. The backstitch wrench 131 having the axis pin 134 as a rotation axis is provided with a driving gear 132, the driving gear 132 also has the axis pin 134 as a rotation axis, and the driving gear 132 is fixed to the backstitch wrench 131 by a screw.

The potentiometer assembly 12 comprises a potentiometer base 121, a potentiometer 122, a dust cover 123, a driven gear 125 and the like, wherein the potentiometer 122 is mounted on the potentiometer base 121, the upper part of the potentiometer 122 is fixed on the potentiometer base 121 through the dust cover 123, the potentiometer base 121 is fixed on the side of the handpiece 11, the driven gear 125 penetrates through the dust cover 123 to be connected with the potentiometer 122, the driven gear 125 is connected with the potentiometer 122, and the potentiometer 122 generates an electric signal change which is generated by the connection and rotation of the driven gear 125.

When sewing machine forward sewing state, the initial condition of spanner subassembly 13 is that the driving gear 132 of spanner subassembly 13 is connected with the driven gear 125 meshing of potentiometre subassembly 12, adopt gear engagement's mode to be connected between spanner subassembly 13 and the potentiometre subassembly 12, make this backstitch stable in structure reliable, have not fragile advantage, and backstitch spanner 131 supports under torsional spring 133's the spring action and leans on spacing pin 112, at this moment, driving gear 132 does not have transmission driven gear 125, driven gear 125 does not exert an influence to potentiometre subassembly 12, potentiometre subassembly 12 can not send electrical signal.

The nose 11 has an upper limit pin 112 and a lower limit pin 113, the upper limit pin 112 and the lower limit pin 113 are fixed on the side of the nose 11, and a movable backstitch wrench 131 is arranged between the upper limit pin 112 and the lower limit pin 113. When the backstitch work is required, the backstitch wrench 131 is pressed down against the lower limit pin 113 under manual pressure, i.e., the backstitch wrench 131 is at the lowest position and the start of the backstitch work. In the pressing-down process, the driving gear 132 fixed on the backstitch wrench 131 drives the driven gear 125 to rotate by a certain angle, the driven gear 125 drives the connected shaft pin 134 to enable the potentiometer 122 to generate an electric signal, the electric signal is connected with the control box, the electric signal is fed back to the control box, and the control box controls the driving motor to implement backstitch action; when the backstitch wrench 131 is loosened, the backstitch wrench 131 is driven to abut against the initial position of the upper limit pin 112 under the reaction force of the torsion spring 133, and the backstitch wrench 131 stops generating the electric signal to the potentiometer 122.

The above description is only one of the preferred embodiments of the present application, and not intended to limit the scope of the present application, and all modifications that can be made to the equivalent structure or equivalent flow path by using the shape, structure and principle of the present application and the accompanying drawings, or applied to other related fields directly or indirectly are included in the scope of the present application.

Claims

1. The backstitch wrench mechanism of the sewing machine is provided with a machine head, a wrench assembly and a control box, and is characterized by further comprising a potentiometer assembly, wherein the wrench assembly enables the potentiometer assembly to generate an electric signal and transmit the electric signal to the control box, and the control box controls a driving motor of the sewing machine to execute backstitch action.

2. The backstitch wrench mechanism of claim 1, wherein the driving gear of the wrench assembly is engaged with the driven gear of the potentiometer assembly, and the driven gear is connected to the potentiometer.

3. The backstitch wrench mechanism of a sewing machine as claimed in claim 1 or 2, wherein the backstitch wrench of the wrench assembly has a shaft pin as a rotation shaft, the shaft pin is sleeved with an elastic member, and the driving gear has a shaft pin as a rotation shaft.

4. The backstitch wrench mechanism of a sewing machine as claimed in claim 2, wherein the potentiometer is mounted on a potentiometer base, the upper portion of the potentiometer is fixed on the potentiometer base by a dust cover, the potentiometer base is fixed on the side of the machine head, and the driven gear passes through the dust cover and is connected with the potentiometer.

5. The backstitch wrench mechanism of a sewing machine as claimed in claim 3, wherein a torsion spring is sleeved on the shaft pin, and the backstitch wrench abuts against the upper limit pin under the elastic force of the torsion spring to achieve a forward sewing state of the sewing machine.

6. The backstitch wrench mechanism of a sewing machine as claimed in claim 3, wherein the sewing machine performs backstitch work when the backstitch wrench is pressed down against the lower limit pin.

7. The backstitch wrench mechanism of a sewing machine as claimed in claim 5 or 6, wherein the upper and lower limit pins are fixed to the side of the machine head, and a movable backstitch wrench is provided between the upper and lower limit pins.

8. The backstitch wrench mechanism for a sewing machine as claimed in claim 3, wherein said shaft pin is fixed to the side of the head by a thread at the front end thereof.

9. The backstitch wrench mechanism of claim 3, wherein the drive gear is screwed to the backstitch wrench.

10. The backstitch wrench mechanism of a sewing machine of claim 1, wherein the wrench assembly and the potentiometer assembly are mounted to a side of the head.