Threading device for penetrating fabric

Abstract

The utility model discloses a threading apparatus for penetrating a fabric, which comprises a handle, a needle sleeve, a crochet hook and an operating piece, and is characterized in that the handle is used for holding; the needle sleeve is fixed on the handle, the needle sleeve is of a hollow structure and is provided with a tip part, and the tip part is formed by beveling the needle sleeve and is provided with a beveled notch; the crochet hook is provided with a hook part for hooking and threading, the crochet hook is movably arranged in the needle sleeve and is provided with a first position where the hook part is hidden in the needle sleeve and a second position where the hook part is exposed out of the needle sleeve, and the direction of a hook opening of the hook part is opposite to the direction of the oblique notch; the hook opening can face the inner wall of the needle sleeve when being hidden in the needle sleeve; the operating part is movably arranged on the handle and used for driving the crochet hook to be switched between the first position and the second position. The hook mouth is prevented from hooking the needle sleeve wall when the crochet hook retreats to the first position, and the crochet hook is prevented from hooking a worn object when retreating out of a fabric, so that the use convenience and the experience feeling are improved.

Description

Technical Field

[0001] The present application relates to the technical field of daily necessities, and in particular to a convenient-to-use threader for threading through fabrics. Background Art

[0002] Among existing quilt holders, for example, patent document CN218186149U discloses a quilt holder comprising a fixing member with a connecting wire and a wire winder around which the connecting wire is wound. The connecting wire is guided through a threading needle with a barb, which passes through an object to be threaded (e.g., bedding). The connecting wire is hooked on the barb, and the threading needle is retracted to pass the connecting wire through the object to be threaded. Depending on the orientation of the barb's mouth, the barb can snag cotton wool, cotton threads, etc. during the threading or retraction process, causing the needle to retract less smoothly and affecting the user experience. Furthermore, after the hook has hooked the threading wire, the threading wire can easily slip out of the hook during the retraction process. Summary of the Invention

[0003] The present application provides a needle threader for threading through fabrics, which will not cause damage to the threaded object during use and can prevent the hook from getting caught on the needle sleeve wall, making it easy to use.

[0004] The present application provides a needle threader, comprising:

[0005] handle, for holding;

[0006] A needle sleeve is fixed on the handle, wherein the needle sleeve is a hollow structure and has a pointed end, wherein the pointed end is formed by beveling the needle sleeve and has an oblique cut;

[0007] a crochet needle having a hook portion for hooking a thread, movably disposed within the needle sleeve, and having a first position in which the hook portion is hidden within the needle sleeve, and a second position in which the hook portion is exposed from the needle sleeve, wherein the hook opening of the hook portion faces the inner wall of the needle sleeve when the hook opening is hidden within the needle sleeve through the bevel cut;

[0008] An operating member is movably arranged on the handle and is used to operate the crochet hook to switch it between the first position and the second position.

[0009] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution. They are merely further supplements or optimizations. Under the premise that there are no technical or logical contradictions, each optional method can be combined separately for the above-mentioned overall solution, or multiple optional methods can be combined.

[0010] Optionally, when the hook opening is hidden in the needle sleeve, the inner wall of the needle sleeve abuts against the hook needle and closes the hook opening.

[0011] Optionally, the crochet hook includes a main body portion coaxially arranged with the needle sleeve, and an elastic deformation portion bent relative to the main body portion. When the crochet hook is in the first position, the elastic deformation portion is housed in the needle sleeve and constrained by the needle sleeve. When the crochet hook is in the second position, the elastic deformation portion is exposed from the needle sleeve and restored, and the hook portion is tilted away from the tip portion.

[0012] Optionally, the hook portion is located at the end of the elastic deformation portion.

[0013] Optionally, the elastic deformation portion includes a first section and a second section that are bent relative to the main body portion, the first section is adjacent to the main body portion, the end of the second section is bent to form the hook portion, and the bending angle of the first section is greater than the bending angle of the second section.

[0014] Optionally, the crochet needle includes a main body portion coaxially arranged with the needle sleeve, and the main body portion has an enlarged diameter section formed by bending itself and abutting against the inner wall of the needle sleeve.

[0015] Optionally, the diameter expansion section has a wave-shaped structure.

[0016] Optionally, along the axial direction of the needle sleeve, when the hook needle is in the second position, the hook mouth passes over the tip portion.

[0017] Optionally, a locking mechanism is provided between the operating member and the handle, and the locking mechanism is used to lock the hook to maintain it in the first position.

[0018] Optionally, the handle is a hollow structure, the crochet hook has a distal end with the hook portion and a proximal end extending into the handle, and the operating member partially extends into the handle and is connected to the proximal end of the crochet hook;

[0019] The locking mechanism includes a locking groove provided on the handle. In a locked state, a portion of the operating member is engaged with the locking groove; in an unlocked state, the operating member is disengaged from the locking groove.

[0020] Optionally, the handle has relative axial and radial directions, and the operating member slides along the radial direction to disengage the operating member from the locking groove. After unlocking, the operating member slides along the axial direction to switch the hook between the first position and the second position.

[0021] Optionally, a second elastic member is included to drive the operating member to reset and enter a locked state. During the process of the hook needle switching between the first position and the second position, the second elastic member follows the operating member.

[0022] Optionally, when the hook is in the second position, the second elastic member acts on the operating member so that the operating member abuts against the handle to generate damping.

[0023] The needle threader of the present application has a hook that retracts into the needle sleeve and faces the needle sleeve after hooking and threading the needle, so as to avoid the hook being hooked on the needle sleeve wall when passing through the very end of the oblique cut. In addition, in the process of retracting and exiting the threaded object, the hook is completely hidden in the needle sleeve, so as to avoid the hook being hooked on the threaded object, thereby improving the convenience and experience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural view of a needle threader according to an embodiment of the present application when penetrating an object;

[0025] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0026] Figure 3 This is a structural view of another hook portion of a crochet needle in a needle threader according to another embodiment of the present application;

[0027] Figure 4 for Figure 1 Structural view of the first locking member of the middle threader switched to the starting position;

[0028] Figure 5 for Figure 4 Structural view of the middle hook being switched to the second position and connected to the threading needle;

[0029] Figure 6 for Figure 5 Middle B part magnified view;

[0030] Figure 7 for Figure 5 Structural view of the middle hook being switched back to the first position;

[0031] Figure 8 for Figure 7 A structural view of the first locking member being switched to a locked state;

[0032] Figure 9 This is a structural view after the threader is retracted;

[0033] Figure 10 This is a schematic diagram of the cooperation between the quilt fastener and the quilt fastener according to an embodiment of the present application;

[0034] Figure 11 for Figure 8 Enlarged view of middle C part;

[0035] Figure 12 This is a front view of a needle threader according to an embodiment of the present application;

[0036] Figure 13 This is a structural view of a crochet needle with a pointed end in a needle threader according to another embodiment of the present application;

[0037] Figure 14 This is a structural view of a needle threader according to another embodiment of the present application;

[0038] Figure 15 This is a structural view of a needle threader (the hook is in the first position) according to another embodiment of the present application;

[0039] Figure 16 for Figure 15 Main view of the middle threader;

[0040] Figure 17 for Figure 15 A structural view showing the first locking member of the middle threader moving in the avoidance zone and the hook being in the second position;

[0041] Figure 18 for Figure 17 Main view of the middle threader;

[0042] Figure 19 This is a structural view of a needle threader according to another embodiment of the present application;

[0043] Figure 20 for Figure 19 A structural view of the distal portion of the middle needle threader (the hook is in the second position);

[0044] Figure 21 for Figure 19 Exploded view of the center threader;

[0045] Figure 22 for Figure 21 Exploded view of the middle threader from another perspective;

[0046] Figure 23 for Figure 22 Enlarged view of the middle D part;

[0047] Figure 24 for Figure 19 Main view of the middle threader;

[0048] Figure 25 for Figure 24 Partial cross-sectional view in the middle FF direction (the hook is in the first position);

[0049] Figure 26 for Figure 24 Partial cross-sectional view in the EE direction (the hook is in the first position);

[0050] Figure 27 for Figure 24 Partial cross-sectional view in the middle FF direction (the hook is in the second position);

[0051] Figure 28 for Figure 24Partial cross-sectional view in the EE direction (the hook is in the second position).

[0052] The reference numerals in the figures are described as follows:

[0053] 1000, needle threader; 101, distal end; 102, proximal end;

[0054] 110, needle sleeve; 111, inner cavity; 113, oblique incision; 114, tip;

[0055] 120. Crochet hook; 121. Hook portion; 122. Hook mouth; 123. Elastic deformation portion; 1231. First section; 1232. Second section; 124. Main body; 1241. Wave-shaped structure.

[0056] 130. Handle; 131. Locking groove; 132. Avoidance area; 133. Restriction area; 134. Guide portion; 135. Positioning step; 136. Window; 137. Slide groove;

[0057] 140, operating member; 141, operating portion; 151, first elastic member; 152, second elastic member;

[0058] 161, first locking member; 1610, connecting portion; 1611, engaging portion;

[0059] 200, object to be threaded; 300, quilt fastener; 310, first fastener; 320, threading thread; 321, thread loop; 330, second fastener. DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0061] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be an intermediate component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be an intermediate component.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0063] In this application, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly indicate the number or order of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0064] See Figures 1 to 13 The present application provides a needle threader 1000 having a distal end 101 and a proximal end 102 as shown in the figure. Specifically, the distal end 101 is one end for threading an object 200, and the other end is the proximal end 102. The object 200 generally includes two pieces of fabric, such as a nested quilt and a quilt cover.

[0065] For ease of description, the threader 1000 of the following embodiments is used in conjunction with a quilt fastener 300. The quilt fastener 300 includes a first fixing member 310 with a threading thread 320, and a second fixing member 330 which is fixed around the threading thread 320 after the threading thread 320 passes through the object 200.

[0066] In another embodiment, the needle threader 1000 includes a handle 130 for holding, a needle sheath 110, a hook needle 120 placed in the needle sheath 110, an operating member 140, and a locking mechanism. The distal end of at least one of the needle sheath 110 and the hook needle 120 has a penetrating ability to penetrate the object 200. The penetrating ability is characterized by a pointed end at the distal end. In the figure, the needle sheath 110 is shown as an example of penetrating ability. The needle sheath 110 is a hollow structure with a smooth outer surface. The hook needle 120 has a hook portion 121 for hooking the thread. Figure 3 The barb with an opening as shown, or a local radial protrusion of the hook needle 120 or as shown Figure 2 The hook 120 is movably arranged in the inner cavity 111 of the needle sleeve 110, and has a first position (such as Figure 2 ), and the second position where the hook portion 121 exposes the needle guard 110 (eg Figure 6 ).

[0067] The operating member 140 is movably disposed on the handle 130 and is directly or indirectly connected to the hook 120 for driving the hook 120 to switch between the first position and the second position. The locking mechanism locks the hook 120 to keep it in the first position.

[0068] The threading method of the needle threader of this embodiment includes:

[0069] S100, such as Figure 1 and Figure 2As shown, when the threader 1000 pierces the object to be pierced (i.e., the piercing operation), the hook needle 120 is in the first position and relies on the needle sleeve 110 to pass through the object to be pierced 200;

[0070] S200, such as Figures 3 to 5 As shown, when the distal end of the needle sheath 110 passes through the object 200, the locking mechanism is unlocked, and the hook 120 is operated to move so that the hook 120 switches to the second position;

[0071] S300, such as Figure 7 and Figure 8 As shown, the threading needle 320 is hung on the hook portion 121, the hook needle 120 returns to the first position, and the locking mechanism switches to the locked state. At this time, the needle sleeve 110 also plays a role in limiting the threading needle 320 from escaping the hook portion 121;

[0072] S400, such as Figure 9 As shown, the needle threader 1000 is retracted (i.e., the retraction operation). After the needle threader 1000 is completely separated from the threaded object 200, the locking mechanism is unlocked, and the hook 120 is switched to the second position to release the cooperation between the threader 320 and the hook portion 121;

[0073] S500, such as Figure 10 As shown, the threading thread 320 is connected to the second fixing member 330 and clamps and fixes the object 200 together with the first fixing member 310 .

[0074] During puncture or withdrawal operations, the smooth outer surface of the needle sleeve avoids the possibility of damaging the punctured object, making the withdrawal action extremely smooth and unobstructed, thereby improving the user experience.

[0075] Among them Figure 13 As shown, the distal end of the hook needle 120 may be provided with a tip for piercing an object, while the distal end of the needle guard 110 does not have the ability to pierce. The threading method differs only in the piercing operation. Specifically, during the piercing operation, the hook portion 121 may be switched to the first position for piercing operation, depending on the specific structure of the hook portion 121, for example, the opening of the hook portion 121 faces the proximal end 102 and is disposed adjacent to the distal end 101 of the hook needle 120. Alternatively, only the tip of the hook needle 120 may be exposed, while the hook portion 121 remains in the inner cavity 111 of the needle guard 110.

[0076] Among them, the needle threader 1000 includes a first elastic member 151 arranged on the handle 130, and the first elastic member 151 is used to drive the crochet hook 120 to reset from the second position to the first position, and the operating member 140 is used to drive the crochet hook 120 to switch from the first position to the second position. In actual use, during daily storage, the hook 121 is not exposed, reducing safety risks; or the first elastic member 151 is used to drive the crochet hook 120 to reset from the first position to the second position, and the operating member 140 is used to drive the crochet hook 120 to switch from the second position to the first position.

[0077] The first elastic member 151 acts on two ends of the first elastic member 151 between the hook 120 and the handle 130 , or between the operating member 140 and the handle 130 .

[0078] In the figure, the needle guard 110 is a straight rod extending in a constant diameter. The hook 120 is rod-shaped and slides relative to the needle guard 110. The handle 130 is a hollow structure. The hook portion 121 is located adjacent to or at the distal end of the hook 120. The proximal end of the hook 120 extends into the handle 130. The operating member 140 is slidably mounted on the handle 130 and partially extends into the handle 130 to directly or indirectly connect with the proximal end of the hook. The operating member 140 and the hook 120 both slide along the axial direction of the needle guard. The proximal end of the handle 130 has a through hole, through which the operating member 140 extends out of the handle 130.

[0079] In one embodiment, if Figures 4 to 12 The locking mechanism includes a first locking member 161 movably provided on the handle 130 for maintaining the hook 120 in the first position. The first locking member 161 acts on at least one of the space between the hook 120 and the handle 130, or between the operating member 140 and the handle 130. The first locking member 161 also has a locked state that maintains the hook 120 in the first position, and an unlocked state that allows the hook 120 to move to the second position. The threading method further includes, before S100, operating the first locking member 161 to the unlocked state.

[0080] The first locking member 161 includes a connecting portion 1610 that extends into the handle and connects to the proximal end of the hook 120, and a snap-fit portion 1611 that is restrained by the handle 130 when locked. Specifically, a locking groove 131 is defined on the sidewall of the handle 130. In the locked state, the snap-fit portion 1611 is positioned within the locking groove 131; in the unlocked state, the snap-fit portion 1611 is disengaged from the locking groove 131.

[0081] The first locking member 161 slides radially along the needle sleeve from the locked state to the unlocked state. In the unlocked state, the first locking member 161 has a starting position ( Figure 4 ) and the working position ( Figure 5The operating member 140 abuts against the connecting portion 1610 of the first locking member 161, driving the operating member 140 to move distally, pushing the first locking member 161 from its starting position to its working position, and simultaneously compressing the first elastic member 151. The first elastic member 151 is a spring, with its two ends acting on the handle 130 and the first locking member 161, respectively.

[0082] In one embodiment, the needle threader 1000 further includes a second elastic member 152 that acts on the first locking member 161 to switch it from the starting position to the locked state, wherein the second elastic member 152 can be a spring, or the hook 120 has a certain elastic reset ability and serves as the second elastic member 152, and the hook 120 is, for example, a metal needle, preferably a steel needle. When the first locking member 161 switches from the locked state to the starting position, the portion of the hook 120 extending into the handle 130 bends and undergoes elastic deformation, such as the radial deformation shown in the figure, driving the operating member 140 to move distally, pushing the first locking member 161 and the hook 120 to switch to the second position. At this time, the first locking member 161, under the action of the second elastic member 152, presses against the inner wall of the handle, providing an operating damping force for the operating member.

[0083] A guide structure is provided between the handle 130 and the first locking member 161. This guide structure is used to guide the first locking member 161 in sliding along the axial direction of the needle guard, i.e., switching between the starting position and the working position. For example, the engaging portion 1611 is generally elliptical in shape, and the guide structure includes two guide plates disposed on the inner wall of the handle 130, defining a guide groove therebetween that mates with the engaging portion 1611.

[0084] The locking groove 131 is open so that the operator can apply force to the engaging portion 1611 to switch it to the starting position. Figure 14 In another embodiment, the operating member 140 and the first locking member 161 are an integrated structure. For example, the engaging portion 1611 protrudes from the outer periphery of the handle 130 to form the operating member 140, which is more convenient for operation. When the crochet hook 120 is in the first position, the operating member 140 abuts against the wall of the locking groove 131, thereby limiting the movement.

[0085] join Figures 15 to 18 In another embodiment, the locking groove 131 includes a restriction area 133 and an avoidance area 132. In the locked state, the first locking member 161 is at least partially or completely located in the restriction area 133. In the unlocked state, the first locking member 161 is completely located in the avoidance area 132 and can move in the avoidance area 132, so that the crochet hook 120 switches to the second position.

[0086] In conjunction with the sliding direction of first locking member 161, escape zone 132 extends axially along the needle guard. Restriction zone 133 communicates with escape zone 132 and extends circumferentially along the handle relative to escape zone 132. A positioning step 135 is provided at the interface between restriction zone 133 and escape zone 132, and first locking member 161 is restrained by positioning step 135 when locked. First elastic member 151 acts on first locking member 161, causing it to move from distal to proximal within escape zone 132. Handle 130 is provided with a guide portion 134 that drives first locking member 161 into restriction zone 133.

[0087] Specifically, in one embodiment, the guide portion 134 is protruded from the inner edge of the avoidance area 132, and is arranged opposite to the restriction area 133 along the circumference of the handle; a mutually cooperating guide surface is provided between the first locking member 161 and the guide portion 134 to squeeze the first locking member 161 into the restriction area 133.

[0088] Alternatively, in another embodiment, the needle threader 1000 further includes a third elastic member that acts on the first locking member 161 to keep it in the restricted area 133, replacing the guide portion 134. In actual use, the first locking member 161 is moved to completely locate in the avoidance area 132, and the operating member 140 is driven to switch the hook 120 to the second position; after the operating member 140 is released, under the action of the first elastic member 151, the first locking member 161 moves toward the proximal end and is squeezed by the guide portion 134 or is acted upon by the third elastic member to enter the restricted area 133. The structure and arrangement of the operating member 140 refer to the aforementioned embodiment.

[0089] In one embodiment, the needle threader 1000 further includes a second locking member movably mounted on the handle 130 for retaining the hook 120 in the second position. The second locking member has a locked state, which acts on at least one of the hook 120 or the operating member 140, and an unlocked state. In the locked state, the hook 120 is retained in the second position. In particular, when the hook 120 is in the second position and the first elastic member 151 is compressed and energized, there is no need to continuously apply force to the operating member 140, thus facilitating the hooking of the threader 320 with the hook portion 121 and reducing effort.

[0090] The second locking member acts on the area between the handle and the hook, or between the handle and the operating member in the locked state.

[0091] In one embodiment, the first locking member 161 and the second locking member are the same component. For example, if there are two locking grooves 131, the first locking member 161 is placed in the corresponding locking groove 131 when the hook 120 is in different positions;

[0092] Alternatively, the same locking groove 131 is provided with two restriction areas 133 , and the hook needle 120 is restricted by the corresponding restriction areas 133 at different positions. The restriction areas 133 refer to the aforementioned embodiment.

[0093] The present application also provides a needle threader comprising a handle, a hook, a needle sleeve, and an operating member. The handle is used for holding, the hook has a hook portion for hooking and threading the needle, the hook portion being similar to the hook portion of the previous embodiment, and the hook is fixedly mounted on the handle. The needle sleeve has a hollow structure and a pointed end portion for piercing an object to be pierced. The needle sleeve is movably mounted on the handle and is mounted on the outside of the hook. The operating member is movably mounted on the handle and is directly or indirectly connected to the needle sleeve. It is used to drive the needle sleeve and has a first position in which the hook portion is hidden in the inner cavity of the needle sleeve and a second position in which the hook portion is exposed from the needle sleeve.

[0094] In one embodiment, the needle threader further comprises a first elastic member acting on the needle sleeve or the operating member to drive the needle sleeve toward the first position or the second position.

[0095] See also Figures 19 to 28 The present application provides another embodiment of a needle threading device 1000, comprising a handle 130 for holding, a needle sheath 110, a hook needle 120 disposed within the needle sheath 110, an operating member 140, and a locking mechanism. The needle sheath 110 and the hook needle 120 are described in detail in the previous embodiment and are not described again herein.

[0096] The operating member 140 is movably mounted on the handle 130 and includes a connecting portion 1610 connected to the proximal end of the hook hook 120, and a snap-fit portion 1611 that is retained by the handle 130 when locked. A locking groove 131 is defined in the sidewall of the handle 130. In the locked state, the snap-fit portion 1611 is positioned within the locking groove 131, retaining the hook hook 120 in the first position. In the unlocked state, the snap-fit portion 1611 is disengaged from the locking groove 131.

[0097] As shown, a window 136 is formed on the outer wall of the handle 130, and the operating member 140 has an operating portion 141 exposed in the window 136. The window 136 extends along the extension direction of the needle guard 110, and serves as a sliding guide for the operating member 140.

[0098] The locking groove 131 is open along one radial side of the needle guard 110 . In S200 , unlocking the locking mechanism includes S2100 : pressing the operating member 140 along the radial direction of the needle guard 110 to disengage the engaging portion 1611 from the locking groove 131 .

[0099] The second elastic member 152 is a spring that acts on the operating member 140. A slot 137 extending axially along the needle guard is provided within the handle 130. One end of the second elastic member 152 is positioned within the slot 137, allowing it to move synchronously with the operating member 140. In one embodiment, when the hook 120 is in the second position, the second elastic member 152 acts on the operating member 140, causing it to abut against the handle 130, generating damping to maintain the hook 120 in the second position. This damping is generated by static friction between the operating member 140 and the handle 130.

[0100] See also Figures 19 to 28 In one embodiment, the tip portion 114 of the needle guard 110 is formed by beveling the needle guard 110 and has an oblique cut 113. The hook opening 122 of the hook portion 121 faces opposite to the oblique cut 113, so that the hook opening 122 can face the inner wall of the needle guard 110 when it is inserted into the needle guard 110 through the oblique cut. In other words, the hook opening 122 is prevented from getting caught on the needle guard wall when passing the end of the oblique cut, preventing it from being retracted.

[0101] Preferably, the inner wall of the needle guard 110 abuts against the hook needle 120 and closes the hook opening 122 to prevent the thread loop 321 from falling out of the hook opening 122. The closure is achieved by the hook portion 121 and the inner wall of the needle guard 110 enclosing and sealing the hook opening 122. The fact that the hook opening 122 and the bevel cut 113 are oriented in opposite directions means that the angle formed by the two orientations is greater than 90 degrees.

[0102] like Figure 20 、 Figure 25 and Figure 27 The hook needle 120 includes a main body 124 coaxially arranged with the needle sleeve 110, and an elastic deformation portion 123 bent relative to the main body 124. The main body 124 is a straight rod extending along the axial direction of the needle sleeve. When the hook needle 120 is in the first position, the elastic deformation portion 123 is accommodated in the needle sleeve 110 and is constrained (such as Figure 25 ), when the hook needle 120 is in the second position, the elastic deformation portion 123 is exposed from the needle sleeve 110 and restored, and the hook portion 121 is tilted away from the tip portion 114 (such as Figure 20 and Figure 27 ), opening the hook opening 122 for threading the loop 321 of the threading thread 320. The tilting direction is away from the tip portion 114. In some embodiments, the angle between the tilting direction and the direction of the bevel cut 113 is less than 90 degrees. Preferably, the angle is 0 degrees, meaning the tilting direction is in the same direction as the bevel cut 113. In the figure, the hook portion 121 is at the end (i.e., distal end) of the elastically deformable portion 123.

[0103] The elastic deformation portion 123 can be a straight line segment, or the elastic deformation portion 123 includes a first segment 1231 and a second segment 1232 that are bent relative to the main body portion 124. The first segment 1231 is adjacent to the main body portion 124, and the end (i.e., the distal end) of the second segment 1232 is bent to form the hook portion 121. When the crochet needle 120 is in the second position, the bending angle of the first segment 1231 (compared to the axial direction of the needle sleeve) is greater than the bending angle of the second segment 1232 (compared to the axial direction of the needle sleeve), which can reduce the resistance generated by retracting the crochet needle.

[0104] Further preferably, along the axial direction of the needle sleeve, when the hook needle 120 is in the second position, the hook mouth 122 passes over the tip portion 114, facilitating the threading 320. The elastic deformation portion 123 prevents the hook portion 121 from being hooked on the distal outer wall of the needle sleeve 110 when the hook needle 120 is retracted to the first position.

[0105] like Figure 25 As shown, the hook needle 120 has a thin rod structure with a distal bent portion forming a hook. The hook needle 120 is made of stainless steel or other memory alloys. The hook needle 120 is loosely fitted with the inner wall of the needle guard 110. The hook needle 120 includes a main body 124 coaxially arranged with the needle guard 110. The main body 124 has an expanded diameter section that is bent to abut against the inner wall of the needle guard, preventing the hook needle 120 from shaking within the needle guard 110. The expanded diameter section can be an additional component provided on the hook needle 120, extending radially along the needle guard 110 and abutting against the inner wall of the needle guard, or the hook needle 120 itself can be bent to form the expanded diameter section. The bent shape is shown as a wavy structure 1241, with the inflection point of the wavy structure 1241 abutting against the inner wall of the needle guard. The expanded diameter section is provided primarily to prevent the hook needle from shaking and hooking onto the needle guard 110, preventing it from returning to its original position.

[0106] The needle threader of the present application has a hook that retracts into the needle sleeve and faces the needle sleeve after hooking and threading the needle, so as to avoid the hook being hooked on the needle sleeve wall when passing through the very end of the oblique cut. In addition, in the process of retracting and exiting the threaded object, the hook is completely hidden in the needle sleeve, so as to avoid the hook being hooked on the threaded object, thereby improving the convenience and experience of use.

[0107] The technical features of the above embodiments may be combined in any manner. To simplify the description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there are no conflicts in the combination of these technical features, they should be considered to be within the scope of this specification. When technical features in different embodiments are reflected in the same figure, it can be regarded as that figure also discloses the combination examples of the various embodiments involved.

[0108] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art could make numerous variations and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application.

Claims

1. A needle threader for threading a fabric, characterized in that: include: handle, for holding; A needle sleeve is fixed on the handle, wherein the needle sleeve is a hollow structure and has a pointed end, wherein the pointed end is formed by beveling the needle sleeve and has an oblique cut; a crochet needle having a hook portion for hooking a thread, slidably disposed within the needle sleeve, and having a first position in which the hook portion is hidden within the needle sleeve, and a second position in which the hook portion is exposed from the needle sleeve, wherein the hook opening of the hook portion faces the inner wall of the needle sleeve when the hook opening is hidden within the needle sleeve through the bevel cut; An operating member is movably arranged on the handle and is used to operate the crochet hook to switch it between the first position and the second position.

2. The needle threader for threading fabric according to claim 1, characterized in that When the hook opening is hidden in the needle sleeve, the inner wall of the needle sleeve abuts against the hook needle and closes the hook opening.

3. The needle threader for threading fabric according to claim 1, characterized in that The crochet hook includes a main body portion coaxially arranged with the needle sleeve, and an elastic deformation portion bent relative to the main body portion. The hook portion is located at the end of the elastic deformation portion. When the crochet hook is in the first position, the elastic deformation portion is accommodated in the needle sleeve and constrained by the needle sleeve. When the crochet hook is in the second position, the elastic deformation portion is exposed from the needle sleeve and restored, and the hook portion is tilted away from the tip portion.

4. The needle threader for threading fabric according to claim 3, characterized in that The elastic deformation portion includes a first section and a second section bent relative to the main body, the first section is adjacent to the main body, the end of the second section is bent to form the hook portion, and the bending angle of the first section is greater than the bending angle of the second section.

5. The needle threader for threading fabric according to claim 1, characterized in that The hook needle comprises a main body portion coaxially arranged with the needle sleeve, wherein the main body portion has an enlarged diameter section formed by bending itself and abutting against the inner wall of the needle sleeve.

6. The needle threader for threading through fabric according to claim 5, characterized in that The diameter expansion section is a wave-shaped structure.

7. The needle threader for threading fabric according to claim 1, characterized in that Along the axial direction of the needle sleeve, when the hook needle is in the second position, the hook mouth passes over the tip portion.

8. The needle threader for threading through fabric according to claim 1, characterized in that A locking mechanism is provided between the operating member and the handle, and the locking mechanism is used to lock the hook to maintain it in the first position.

9. The needle threader for threading fabric according to claim 8, characterized in that The handle is a hollow structure, the hook has a distal end with the hook portion and a proximal end extending into the handle, and the operating member partially extends into the handle and is connected to the proximal end of the hook; The locking mechanism includes a locking groove provided on the handle, and in a locked state, a portion of the operating member is engaged with the locking groove; In the unlocked state, the operating member is disengaged from the locking groove.

10. The needle threader for threading fabric according to claim 9, characterized in that The handle has relative axial and radial directions, and the operating member slides along the radial direction to disengage the operating member from the locking groove. After unlocking, the operating member slides along the axial direction to switch the hook between the first position and the second position.

Images