Improved structure of crochet hook base

Abstract

The utility model provides an improved structure of a crochet hook base, which comprises a supporting piece, a supporting seat, a driving piece, a positioning piece and a first elastic piece, the supporting seat is rotatably connected on the supporting piece, the supporting piece is rotatably connected on a machine shell of a sewing machine, a positioning hole is arranged on the supporting piece, the positioning piece is slidably connected on the supporting seat, and the first elastic piece is arranged on the supporting seat. The driving part is connected to a machine shell of the sewing machine in a sliding mode, a pulling plate is connected to the driving part in a rotating mode, a limiting hole is formed in the pulling plate, and the positioning part penetrates through the limiting hole. The supporting seat is overturned upwards, the positioning piece is inserted into the positioning hole, and the supporting seat and the supporting piece swing synchronously; the positioning piece is separated from the positioning hole, the supporting seat is overturned downwards under the acting force of the first elastic piece, and the pulling plate pulls and positions the positioning piece and the supporting seat through the limiting hole. And the aim of preventing collision is fulfilled.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing machine field, in particular, relate to a crochet base improvement structure. BACKGROUND

[0002] As Figure 1 The current crochet base mainly includes support shaft 11, support seat 12, second positioning sleeve 13, first positioning sleeve 14, torsional spring 151, bolt 16. Multiple crochet is installed on support seat 12. Second positioning sleeve 13, first positioning sleeve 14 are fixed on support shaft 11 and are located at both ends of support seat 12 respectively. One end of torsional spring 151 is connected with support seat 12, and the other end of torsional spring 151 is connected with first positioning sleeve 14. Positioning rod 41 is slidingly connected on support seat 12, and positioning hole 21 for passing positioning rod 41 is formed in first positioning sleeve 14. Bolt 16 is fixed on second positioning sleeve 13. The end of positioning rod 41 away from positioning hole 21 is fixedly connected with connecting plate 42. Support seat 12 is rotatably connected on support shaft 11, and support shaft 11 is reciprocatingly rotated on sewing machine.

[0003] When using the crochet base, support seat 12 is pushed upward, positioning rod 41 is inserted into positioning hole 21 on first positioning sleeve 14 by the elastic force of spring 152, and support seat 12 rotates synchronously with support shaft 11 when support shaft 11 rotates.

[0004] Pull rod 17 is slidingly connected on sewing machine, when not using the crochet base, pull rod 17 is pulled, the stopper on pull rod 17 moves, the U-shaped plate 6 at the front end of pull rod 17 exerts force on connecting plate 42, positioning rod 41 is pulled out from positioning hole 21, then, support seat 12 is turned down by the elastic force of torsional spring 151, since the U-shaped plate 6 is the U-shaped structure with the opening at the front end, in order to avoid that support seat 12 knocks the inner wall of the shell of sewing machine, support seat 12 must be limited by bolt 16.

[0005] However, whether using the crochet base or not, as long as the sewing machine is started, the support shaft will reciprocatingly rotate. In the case of not using the crochet base, the sewing machine is started, the support shaft is rotated rapidly, since the bolt exerts the upward turning force on support seat, due to inertia, once support seat is turned upward more than a certain angle, the problem of needle collision of the crochet on support seat will be caused, and the crochet is damaged. UTILITY MODEL CONTENTS

[0006] Therefore, the utility model aims at providing a crochet base improvement structure, so that the purpose of not easy to cause needle collision is achieved, and the crochet is not easy to be damaged.

[0007] In order to solve the above technical problems, the technical scheme of the utility model is: a crochet base improved structure, including support piece, support seat, driving piece, positioning piece, first elastic piece, the support seat is rotatably connected on the support piece, the support piece is rotatably connected on the casing of sewing machine, the support piece is set with positioning hole, the positioning piece is slidably connected on the support seat, the driving piece is slidably connected on the casing of sewing machine, the driving piece is rotatably connected with the pull plate, the pull plate is set with limiting hole, the positioning piece passes through the limiting hole,

[0008] The support seat is turned up, the positioning piece is inserted into the positioning hole, and the support seat and the support piece are synchronous swing;

[0009] The positioning piece is separated from the positioning hole, the support seat is turned down under the action of the first elastic piece, and the pull plate holds the positioning piece and the support seat through the limiting hole.

[0010] The above technical scheme is realized, the driving piece is pulled, the positioning piece is extracted from the positioning hole, the support seat is turned down, the pull plate is moved along the axis of the driving piece under the drive of the positioning piece, the inner wall of the limiting hole supports the positioning piece and the support seat, and collision between the support seat and the inner wall of the casing of the sewing machine is avoided.

[0011] As a preferred scheme of the utility model, the pull plate is set with an extension groove, and the driving piece is arranged in the extension groove.

[0012] The above technical scheme is realized, when the support seat is turned down, the end of the positioning piece and the inner wall of the limiting hole are in contact, and through the arrangement of the extension groove, the pull plate can move along the radial direction of the driving piece, so that the turning-down angle of the support seat can be improved, and the needle collision phenomenon is further avoided.

[0013] As a preferred scheme of the utility model, the support piece includes a support shaft and a first positioning sleeve, the first positioning sleeve is fixed on the support shaft, the support shaft is rotatably connected on the sewing machine, the support seat is rotatably connected on the support shaft, and the positioning hole is arranged on the first positioning sleeve.

[0014] The above technical scheme is realized, the support piece includes two parts of the support shaft and the first positioning sleeve, so that the support piece can be installed and disassembled conveniently.

[0015] As a preferred scheme of the utility model, the first positioning sleeve is set with a limiting slope, and the positioning piece moves along the limiting slope after being extracted from the positioning hole.

[0016] The positioning member moves along the limiting inclined surface after being pulled out from the positioning hole, the driving member moves synchronously with the positioning member, so that the driving member moves as close to the sewing machine as possible, and the space occupation volume is reduced.

[0017] As a preferred scheme of the utility model, the second positioning sleeve is fixedly connected to the supporting shaft, and the first positioning sleeve and the second positioning sleeve are respectively located at two ends of the supporting base and limit the axial movement of the supporting base along the supporting shaft.

[0018] The above technical scheme enables the supporting base to be fully limited and not prone to axial movement along the supporting shaft.

[0019] As a preferred scheme of the utility model, the positioning member comprises a positioning rod and a connecting plate, the connecting plate is connected to the positioning rod, the positioning rod is slidingly connected to the supporting base and used for penetrating into the positioning hole, the positioning rod penetrates through the limiting hole, and the pull plate is used for abutting against the connecting plate.

[0020] The above technical scheme enables the positioning rod to be pulled out from the positioning hole by abutting the pull plate against the connecting plate, and the operation is simple and convenient.

[0021] As a preferred scheme of the utility model, the second elastic member is connected between the positioning rod and the supporting base.

[0022] The above technical scheme enables the positioning rod to move along the limiting inclined surface by the elastic force of the second elastic member after being pulled out from the positioning hole, the positioning rod is not prone to separation from the limiting inclined surface, the supporting base is further limited, and the problem of the plunger is not prone to occurrence.

[0023] In summary, the utility model has the following beneficial effects:

[0024] 1. The bolt is cancelled, and the production cost is reduced;

[0025] 2. The pull plate has a good supporting effect on the positioning rod, so that the supporting base and the inner wall of the machine shell of the sewing machine are not prone to collision when the supporting base is turned along the axis of the supporting shaft. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic view of the prior art;

[0027] Figure 2 It is a structural schematic view of the utility model;

[0028] Figure 3 It is a structural schematic view of the extension groove;

[0029] Figure 4 It is a structural schematic view of the pull plate.

[0030] 11, support shaft; 12, support seat; 13, second positioning sleeve; 14, first positioning sleeve; 151, torsion spring; 152, spring; 16, bolt; 17, pull rod; 2, support; 21, positioning hole; 22, first elastic member; 23, limiting inclined surface; 4, positioning member; 41, positioning rod; 42, connecting plate; 43, second elastic member; 5, driving member; 6, pull plate; 61, limiting hole; 62, extension slot. DETAILED DESCRIPTION

[0031] 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.

[0032] A hook needle base improved structure, including support 2, support seat 12, driving member 5, positioning member 4.Support 2 includes support shaft 11 and first positioning sleeve 14.First positioning sleeve 14 is sleeved and fixed on support shaft 11.Support shaft 11 is horizontally arranged and rotationally connected on sewing machine, support seat 12 is rotationally connected on support shaft 11 along the axis of support shaft 11, and support seat 12 is used for being connected with hook needle.Positioning hole 21 is opened on the side wall of first positioning sleeve 14, and the section of positioning hole 21 is circular.

[0033] First elastic member 22 is sleeved on support shaft 11, one end of first elastic member 22 is connected with support seat 12, and the other end of first elastic member 22 is connected with first positioning sleeve 14.Through the elastic force of first elastic member 22, support seat 12 has the tendency of turning down along the axis of support shaft 11.

[0034] Limiting inclined surface 23 is opened on first positioning sleeve 14, and limiting inclined surface 23 is located below positioning hole 21.

[0035] Second positioning sleeve 13 is sleeved and fixedly connected on support shaft 11, first positioning sleeve 14 and second positioning sleeve 13 are respectively located at both ends of support seat 12 and limit the movement of support seat 12 along the axial direction of support shaft 11.

[0036] Slip hole is opened on support seat 12, and the axis of slip hole is parallel to the axis of support shaft 11.Positioning member 4 is slidingly connected in slip hole.Positioning member 4 includes positioning rod 41 and connecting plate 42.Connecting plate 42 is fixedly connected on positioning rod 41, and the inner diameter of connecting plate 42 is greater than the inner diameter of positioning rod 41.Positioning rod 41 is slidingly connected in slip hole and is used for penetrating into positioning hole 21.

[0037] Second elastic member 43 is connected between positioning rod 41 and support seat 12, and second elastic member 43 continuously applies elastic force to positioning rod 41 in the direction close to first positioning sleeve 14.Second elastic member 43 is two.

[0038] The driving member 5 is horizontally arranged and slidably connected to the sewing machine, and the axis of the driving member 5 is parallel to the axis of the supporting shaft 11. The cross section of the driving member 5 is T-shaped.

[0039] The driving member 5 is provided with a waist-shaped pull plate 6, and a waist-shaped limiting hole 61 is formed in the pull plate 6, the positioning rod 41 passes through the limiting hole 61, and the pull plate 6 is used to abut against the connecting plate 42.

[0040] The waist-shaped extension groove 62 is formed in the pull plate 6, and the driving member 5 is arranged in the extension groove 62.

[0041] Of course, the above is only a typical example of the present application, and in addition to this, the present application can have other various specific implementation manners, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. An improved structure for a crochet hook base, comprising a support member (2), a support seat (12), a drive member (5), a positioning member (4), and a first elastic member (22), wherein the support seat (12) is rotatably connected to the support member (2), the support member (2) is rotatably connected to the housing of a sewing machine, the support member (2) has a positioning hole (21), the positioning member (4) is slidably connected to the support seat (12), and the drive member (5) is slidably connected to the housing of the sewing machine, characterized in that: The driving member (5) is rotationally connected with a pull plate (6), the pull plate (6) is provided with a limiting hole (61), and the positioning member (4) passes through the limiting hole (61). The support base (12) is upwardly overturned, the positioning member (4) is inserted into the positioning hole (21), and the support base (12) is synchronously swung with the support member (2). The positioning member (4) is separated from the positioning hole (21), the support base (12) is downwardly overturned under the action force of the first elastic member (22), and the pull plate (6) pulls and positions the positioning member (4) and the support base (12) through the limiting hole (61).

2. The crochet hook base improvement according to claim 1, wherein: The pull plate (6) is provided with an extension slot (62), and the driving member (5) is arranged in the extension slot (62).

3. The crochet hook base improvement of claim 1, wherein: The support member (2) comprises a support shaft (11) and a first positioning sleeve (14), the first positioning sleeve (14) is fixed to the support shaft (11), the support shaft (11) is rotationally connected to the sewing machine, the support base (12) is rotationally connected to the support shaft (11), and the positioning hole (21) is arranged on the first positioning sleeve (14).

4. The crochet hook base improvement according to claim 3, wherein: The first positioning sleeve (14) is provided with a limiting inclined surface (23), and the positioning member (4) moves along the limiting inclined surface (23) after being pulled out of the positioning hole (21).

5. The crochet hook base improvement according to claim 3, wherein: The support shaft (11) is fixedly connected with a second positioning sleeve (13), the first positioning sleeve (14) and the second positioning sleeve (13) are respectively located at two ends of the support base (12) and limit the axial movement of the support base (12) along the support shaft (11).

6. The crochet hook base improvement of claim 1 wherein: The positioning member (4) comprises a positioning rod (41) and a connecting plate (42), the connecting plate (42) is connected to the positioning rod (41), the positioning rod (41) is slidingly connected to the support base (12) and is arranged to pass into the positioning hole (21), the positioning rod (41) passes through the limiting hole (61), and the pull plate (6) is arranged to abut against the connecting plate (42).

7. The crochet hook base improvement according to claim 6, wherein: The second elastic member (43) is connected between the positioning rod (41) and the support base (12).

Images