Fishhook detacher

Abstract

An unhooking rod extends in the horizontal direction, one end of the unhooking rod is located in a containing cavity, the other end of the unhooking rod is connected with an unhooking head, a locking groove is formed in the circumferential direction of the unhooking rod, the unhooking rod is sleeved with a locking sleeve, mounting grooves are formed in the locking sleeve, and the number of the mounting grooves corresponds to that of balls. The ball is arranged in the mounting groove, the sliding cover is arranged outside the locking sleeve in a sleeving manner, the sliding cover is in sliding connection with the locking sleeve, the sliding cover comprises a first sliding part and a second sliding part, the first sliding part is arranged outside the second sliding part in a sleeving manner, and the inner diameter of the first sliding part is larger than that of the second sliding part; wherein the first sliding piece is used for allowing part of the balls to enter so as to loosen the unhooking rod; the second sliding piece is used for squeezing the ball into the locking groove so as to lock the unhooking rod. According to the technical scheme, the fishhook unhooking device has the contraction state and the extension state, and the unhooking rod is arranged in the containing cavity in the contraction state, so that the fishhook unhooking device is shortened and convenient to carry; and in the extension state, the locking assembly is arranged for locking, so that the fishhook detacher can be normally used for unhooking.

Description

Technical Field

[0001] The utility model relates to the technical field of fishing gear, in particular to a fishhook remover. Background Art

[0002] Fishing has always been a popular leisure activity for the general public, which can not only hone people's patience but also bring the joy of harvesting. However, removing the hook after catching a fish has become a headache and tedious task for anglers. The efficiency of removing the hook from the fish's mouth according to conventional methods is very low and it is easy to cause damage to the fish. Therefore, the existing methods generally use a hook remover to remove the hook.

[0003] However, the existing dehooker has to be of a certain length to facilitate dehooking, and is inconvenient to carry due to the length. Utility Model Content

[0004] In view of the above problems, the present application provides a fishhook remover, which is used to solve the technical problem that the existing fishhook removers have to be of a certain length to be convenient for removing the hook, and are inconvenient to carry due to the length.

[0005] To achieve the above object, the inventor provides a fishhook remover, comprising:

[0006] A handle assembly having a receiving cavity;

[0007] The unhooking assembly includes an unhooking rod and an unhooking head. The unhooking rod extends horizontally, one end of the unhooking rod is located in the accommodating cavity, and the accommodating cavity is used to accommodate the unhooking rod. The other end of the unhooking rod is connected to the unhooking head, and the unhooking head is used to unhook the fishhook.

[0008] The locking assembly includes a locking sleeve, balls, and a sliding cover. A locking groove is provided on the circumference of the unhooking rod. The locking sleeve is sleeved on the outside of the unhooking rod. The locking sleeve is provided with mounting grooves corresponding to the number of balls. The balls are arranged in the mounting grooves. The sliding cover is sleeved on the outside of the locking sleeve. The sliding cover is slidably connected to the locking sleeve. The sliding cover includes a first sliding member and a second sliding member. The first sliding member is sleeved on the outside of the second sliding member. The inner diameter of the first sliding member is larger than the inner diameter of the second sliding member.

[0009] The first sliding member is used to allow part of the balls to enter so as to release the unhooking rod; the second sliding member is used to squeeze the balls into the locking groove so as to lock the unhooking rod.

[0010] Different from the prior art, the technical solution of the present application is provided with a locking assembly that cooperates with the dehooking assembly and the handle assembly, so that the fishhook remover has a retracted state and an extended state. In the retracted state, the dehooking rod is placed in the accommodating chamber, making the fishhook remover as a whole retracted and shortened, making it easier to carry; while in the extended state, a locking assembly is provided to lock the fishhook remover so that it can be used normally without retracting during use. The structure is simple and easy to use.

[0011] As an embodiment of the present invention, the handle assembly includes a gripping handle and a connecting sleeve, one end of the connecting sleeve is sleeved in one end of the gripping handle, and the second sliding member extends horizontally to the other end of the connecting sleeve and is slidably connected to the connecting sleeve.

[0012] In this way, by providing the connecting sleeve as a transition connecting piece between the gripping handle and the sliding cover, the sliding cover is prevented from sliding directly on the gripping handle, which can play a certain protective role.

[0013] As an embodiment of the present invention, a friction member is provided outside the first sliding member, and the friction member is a pattern, a convex block, or a sliding groove.

[0014] In this way, by arranging the friction member outside the first sliding member, the friction force outside the first sliding member is increased, thereby facilitating sliding for the user. Optionally, the friction member can be a concave-convex pattern or a pattern or a convex block or a sliding groove or the like.

[0015] As an embodiment of the present utility model, the unhooking assembly further includes a limiting block, and the handle assembly further includes a limiting groove;

[0016] A limiting block is installed at one end of the unhooking rod in the accommodating cavity, and a limiting groove is arranged inside the other end of the gripping handle. The limiting groove is used to cooperate with the limiting block to limit the unhooking rod.

[0017] In this way, by arranging the limiting groove and cooperating with the limiting block, the unhooking rod can be restricted within a certain range, thereby preventing the unhooking rod from shaking in the accommodating cavity and damaging the inner wall thereof.

[0018] As an implementation mode of the present invention, a hanging hole is provided at the other end of the gripping handle.

[0019] In this way, the fishhook remover can be conveniently carried or hung by providing the hanging hole.

[0020] As an embodiment of the present invention, an observation port is provided on the outside of the gripping handle, and the observation port is used to observe the accommodating cavity.

[0021] In this way, the internal situation of the accommodating cavity can also be observed by arranging an observation port. In some embodiments, the observation port can also be a transparent window.

[0022] As an embodiment of the present invention, the locking sleeve includes a locking portion and a conical portion connected to each other, a mounting groove is provided on the locking portion, the sliding cover is sleeved outside the locking portion, the small diameter end of the conical portion is close to the unhooking head, the outer diameter of the large diameter end of the conical portion is larger than the inner diameter of the first sliding member, and the conical portion is used to limit the movement of the sliding cover in the horizontal direction.

[0023] In this way, the locking portion can be used to cooperate with the ball to lock or release the unhooking rod, and the tapered portion can limit the sliding position of the sliding cover in the horizontal direction.

[0024] As an implementation mode of the present utility model, the unhooking head is in the shape of a bullet head.

[0025] In this way, setting the hook removal head in a bullet shape makes it easier to penetrate into the fish body to remove the fish hook.

[0026] As an implementation mode of the present invention, a notch is provided on one side of the unhooking head, and an unhooking hole and a fishing line groove are also provided on the unhooking head. The notch is connected to the unhooking hole, and the fishing line groove is used for inserting the fishing line.

[0027] In this way, by providing the notch, the unhooking hole and the fishing line groove, the unhooking head is facilitated to cooperate with the fishing line and the fish hook, thereby unhooking the fish hook.

[0028] As an implementation mode of the present invention, four balls are provided, and the locking sleeve is provided with four mounting grooves evenly distributed around its circumference.

[0029] Thus, it is preferred to provide four balls to better lock the unhooking lever.

[0030] The above-mentioned records related to the content of the utility model are only an overview of the technical solution of this application. In order to enable ordinary technicians in this field to understand the technical solution of this application more clearly, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purposes and other purposes, features and advantages of this application easier to understand, the following is an explanation in combination with the specific implementation methods and drawings of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of this application and other related contents, and are not to be considered as limiting this application.

[0032] In the drawings of the specification:

[0033] Figure 1 This is a schematic structural diagram of a fishhook remover according to an embodiment of the present application;

[0034] Figure 2 This is a structural schematic diagram of a fishhook remover according to an embodiment of the present application from another perspective;

[0035] Figure 3 This is a cross-sectional view of a fishhook remover when the remover rod is extended and locked according to one embodiment of the present application;

[0036] Figure 4 This is a cross-sectional view of a fishhook remover according to one embodiment of the present application when the remover rod is retracted;

[0037] Figure 5 This is a schematic structural diagram of a decoupling assembly according to an embodiment of the present application;

[0038] Figure 6 This is a schematic structural diagram of a locking sleeve according to an embodiment of the present application;

[0039] Figure 7 This is a schematic structural diagram of a sliding cover according to an embodiment of the present application.

[0040] The reference numerals in the above drawings are described as follows:

[0041] 100-fishhook remover; 1-handle assembly; 11-accommodating chamber; 12-gripping handle; 121-hanging hole; 122-observation port; 13-connecting sleeve; 14, limiting groove; 2-hook remover assembly; 21-hook remover rod; 211-locking groove; 22-hook remover head; 221-notch; 222-hook remover hole; 223-fishing line groove; 23-limiting block; 3-locking assembly; 31-locking sleeve; 311-locking part; 3111-mounting groove; 312-conical part; 32-ball; 33-sliding cover; 331-first sliding member; 3311-friction member; 332-second sliding member; X-horizontal direction. DETAILED DESCRIPTION

[0042] In order to explain in detail the possible application scenarios, technical principles, specific solutions that can be implemented, and the purpose and effects of this application, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application and are therefore only examples and are not intended to limit the scope of protection of this application.

[0043] References to "embodiments" herein mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the word "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0044] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0045] In the description of this application, the term "and / or" is used to describe a logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and both A and B exist. In addition, the character " / " in this document generally indicates that the objects before and after are in a logical "or" relationship.

[0046] In this application, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, priority or sequence relationship between these entities or operations.

[0047] Without further limitations, in this application, the words "include", "comprise", "have" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method or product.

[0048] Consistent with the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceed" are understood to exclude the number itself; expressions such as "above," "below," and "within" are understood to include the number itself. Furthermore, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this manner, such as "multiple groups," "multiple times," etc., unless otherwise specifically defined.

[0049] In the description of the embodiments of the present application, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present application.

[0050] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the present application, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0051] According to some embodiments of this application, please refer to Figures 1 to 7 , this embodiment relates to a fishhook unhooking device 100, comprising a handle assembly 1, an unhooking assembly 2 and a locking assembly 3, the handle assembly 1 having a receiving chamber 11; the unhooking assembly 2 comprising an unhooking rod 21 and an unhooking head 22, the unhooking rod 21 extending along the horizontal direction X, one end of the unhooking rod 21 being located in the receiving chamber 11, the receiving chamber 11 being used to accommodate the unhooking rod 21, the other end of the unhooking rod 21 being connected to the unhooking head 22, the unhooking head 22 being used to unhook the fishhook; the locking assembly 3 comprising a locking sleeve 31, a ball 32 and a sliding cover 33, a locking groove 211 being provided in the circumference of the unhooking rod 21, the locking sleeve 31 being sleeved on the outside of the unhooking rod 21, locking The sleeve 31 is provided with mounting grooves 3111 corresponding to the number of balls 32, and the balls 32 are arranged in the mounting grooves 3111. The sliding cover 33 is sleeved on the outside of the locking sleeve 31, and the sliding cover 33 is slidably connected to the locking sleeve 31. The sliding cover 33 includes a first sliding member 331 and a second sliding member 332. The first sliding member 331 is sleeved on the outside of the second sliding member 332, and the inner diameter of the first sliding member 331 is larger than the inner diameter of the second sliding member 332; wherein the first sliding member 331 is used to allow some of the balls 32 to enter to loosen the unhooking rod 21; the second sliding member 332 is used to squeeze the balls 32 into the locking groove 211 to lock the unhooking rod 21.

[0052] The unhooking assembly 2 and locking assembly 3 are made of titanium alloy. The unhooking rod 21 and unhooking head 22 can be connected by a mortise and tenon joint. The end of the unhooking rod 21 near the handle assembly 1 is provided with a locking groove 211. Optionally, the ball 32 of the locking assembly 3 can be an elastic ball 32. At least a portion of the ball 32 is disposed within the mounting groove 3111, and the ball 32 contacts the sliding cover 33. Thus, when the sliding cover 33 slides, when the first sliding member 331 contacts the ball 32, there is sufficient space in the first sliding member 331 for the ball 32 to be accommodated, so that a gap exists between the ball 32 and the decoupling lever 21, allowing the decoupling lever 21 to move in the horizontal direction X, thereby extending (extending from the accommodating chamber 11) or retracting (retracting into the accommodating chamber 11). Furthermore, when the second sliding member 332 contacts the ball 32, the second sliding member 332 squeezes the ball 32, forcing it into the locking groove 211, thereby locking the decoupling lever 21 and ensuring that the decoupling lever 21 remains extended. In actual use, when the decoupling lever 21 is retracted into the accommodating chamber 11 and needs to be extended, the first sliding member 331 is in contact with the ball 32 in this state, so that the decoupling lever 21 can be directly pulled out to extend. When the unhooking rod 21 is extended, the handle assembly 1 can be rotated or the sliding cover 33 can be slid to make the second sliding member 332 contact the ball 32, thereby locking the unhooking rod 21. When the unhooking rod 21 needs to be retracted, the sliding cover 33 needs to be slid to make the first sliding member 331 contact the ball 32 again, thereby releasing the unhooking rod 21 and retracting it into the accommodating chamber 11.

[0053] The technical solution of the present application is provided with a locking assembly 3 that cooperates with the dehooking assembly 2 and the handle assembly 1, so that the fishhook remover 100 has a retracted state and an extended state. In the retracted state, the dehooking rod 21 is placed in the accommodating chamber 11, so that the fishhook remover 100 as a whole is retracted and shortened, making it easier to carry; while in the extended state, the locking assembly 3 is provided to lock the fishhook remover 100 so that it can be used normally to remove the hook, preventing the fishhook remover 100 from retracting during use. The structure is simple and easy to use.

[0054] According to some embodiments of the present application, optionally, Figure 2 and Figure 3 As shown, the handle assembly 1 includes a gripping handle 12 and a connecting sleeve 13 , one end of the connecting sleeve 13 is sleeved inside one end of the gripping handle 12 , and the second sliding member 332 extends along the horizontal direction X to the other end of the connecting sleeve 13 and is slidably connected to the connecting sleeve 13 .

[0055] The gripping handle 12 is made of wood or titanium alloy, while the connecting sleeve 13 is also made of titanium alloy. The central diameter of the gripping handle 12 is smaller than the diameters at the ends, making it easier to grip. Furthermore, the second sliding member 332 is slidably connected to the connecting sleeve 13, and the outer diameter of the first sliding member 331 is larger than the inner diameter of the connecting sleeve 13.

[0056] In this way, by providing the connecting sleeve 13 as a transition connecting piece between the gripping handle 12 and the sliding cover 33, the sliding cover 33 is prevented from sliding directly with the gripping handle 12, which can play a certain protective role.

[0057] According to some embodiments of the present application, optionally, Figure 1 、 Figure 2 and Figure 7 As shown, a friction member 3311 is provided outside the first sliding member 331 , and the friction member 3311 is a pattern, a bulge, or a sliding groove.

[0058] Thus, the friction force outside the first sliding member 331 is increased by arranging the friction member 3311 outside the first sliding member 331, thereby facilitating sliding of the user. Optionally, the friction member 3311 may be a concave-convex pattern or a pattern or a convex block or a sliding groove, etc.

[0059] According to some embodiments of the present application, optionally, Figure 3 As shown, the unhooking assembly 2 also includes a limit block 23, and the handle assembly 1 also includes a limit groove 14; the unhooking rod 21 is located at one end of the accommodating cavity 11 and the limit block 23 is installed, and the limit groove 14 is arranged inside the other end of the gripping handle 12, and the limit groove 14 is used to cooperate with the limit block 23 to limit the unhooking rod 21.

[0060] In this way, by providing the limiting groove 14 and cooperating with the limiting block 23 , the unhooking rod 21 can be restricted within a certain range, thereby preventing the unhooking rod 21 from shaking in the accommodating cavity 11 and damaging the inner wall thereof.

[0061] According to some embodiments of the present application, optionally, Figure 2 and Figure 3 As shown, a hanging hole 121 is defined at the other end of the gripping handle 12 .

[0062] In this way, the hook remover 100 can be conveniently carried or hung by providing the hanging hole 121 .

[0063] According to some embodiments of the present application, optionally, Figure 3 As shown, an observation port 122 is provided on the outside of the gripping handle 12 , and the observation port 122 is used to observe the accommodating cavity 11 .

[0064] In this way, the internal situation of the accommodating cavity 11 can be observed by providing the observation port 122. In some embodiments, the observation port 122 can also be a transparent window.

[0065] According to some embodiments of the present application, optionally, Figure 3 and Figure 6As shown, the locking sleeve 31 includes a connected locking portion 311 and a tapered portion 312. The locking portion 311 is provided with a mounting groove 3111. The sliding cover 33 is sleeved outside the locking portion 311. The small diameter end of the tapered portion 312 is close to the unhooking head 22. The outer diameter of the large diameter end of the tapered portion 312 is greater than the inner diameter of the first sliding member 331. The tapered portion 312 is used to limit the movement of the sliding cover 33 along the horizontal direction X.

[0066] In this way, the locking portion 311 can be used to cooperate with the ball 32 to lock or release the unhooking rod 21, and the tapered portion 312 can limit the sliding position of the sliding cover 33 along the horizontal direction X.

[0067] According to some embodiments of the present application, optionally, Figure 2 and Figure 5 As shown, the unhooking head 22 is in the shape of a bullet.

[0068] Thus, setting the dehooking head 22 in a bullet shape makes it easier to penetrate into the fish body to dehook the fishhook.

[0069] According to some embodiments of the present application, optionally, Figure 5 As shown, a notch 221 is provided on one side of the unhooking head 22. The unhooking head 22 is also provided with a unhooking hole 222 and a fishing line groove 223. The notch 221 is communicated with the unhooking hole 222. The fishing line groove 223 is used for inserting the fishing line.

[0070] In this way, by providing the notch 221, the unhooking hole 222 and the fishing line groove 223, it is convenient for the unhooking head 22 to cooperate with the fishing line and the fish hook, thereby unhooking the fish hook.

[0071] According to some embodiments of the present application, optionally, Figure 3 、 Figure 4 and Figure 6 As shown, four balls 32 are provided, and the locking sleeve 31 is provided with four mounting grooves 3111 evenly distributed around its circumference.

[0072] Like this, preferably be provided with four balls 32, better lock to unhooking rod 21. In certain embodiments, balls 32 can also be provided with three or five etc.

[0073] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A fishhook remover, characterized in that: include: a handle assembly, the handle assembly having a receiving cavity; a dehooking assembly, the dehooking assembly comprising a dehooking rod and a dehooking head, the dehooking rod extending in a horizontal direction, one end of the dehooking rod being located in the accommodating cavity for accommodating the dehooking rod, the other end of the dehooking rod being connected to the dehooking head for dehooking the fishhook; A locking assembly, comprising a locking sleeve, balls, and a sliding cover, wherein a locking groove is provided on the circumference of the unhooking rod, the locking sleeve is sleeved on the outside of the unhooking rod, the locking sleeve is provided with mounting grooves corresponding to the number of the balls, the balls are arranged in the mounting grooves, the sliding cover is sleeved on the outside of the locking sleeve, the sliding cover is slidably connected to the locking sleeve, the sliding cover comprises a first sliding member and a second sliding member, the first sliding member is sleeved on the outside of the second sliding member, and the inner diameter of the first sliding member is larger than the inner diameter of the second sliding member; The first sliding member is used to allow part of the balls to enter so as to release the unhooking rod; the second sliding member is used to squeeze the balls into the locking groove so as to lock the unhooking rod.

2. The fishhook remover according to claim 1, characterized in that: The handle assembly includes a gripping handle and a connecting sleeve, one end of the connecting sleeve is sleeved inside one end of the gripping handle, and the second sliding member extends along the horizontal direction to the other end of the connecting sleeve and is slidably connected to the connecting sleeve.

3. The fishhook remover according to claim 2, characterized in that: A friction member is provided outside the first sliding member, and the friction member is a pattern, a bulge, or a sliding groove.

4. The fishhook remover according to claim 2, characterized in that: The decoupling assembly further includes a limiting block, and the handle assembly further includes a limiting slot; The limit block is installed at one end of the unhooking rod located in the accommodating cavity, and the limit groove is arranged inside the other end of the gripping handle. The limit groove is used to cooperate with the limit block to limit the unhooking rod.

5. The fishhook remover according to claim 2, characterized in that: The other end of the gripping handle is provided with a hanging hole.

6. The fishhook remover according to claim 2, characterized in that: An observation port is provided on the outside of the gripping handle, and the observation port is used to observe the accommodating cavity.

7. The fishhook remover according to claim 1, characterized in that: The locking sleeve includes a connected locking portion and a tapered portion, the locking portion is provided with the mounting groove, the sliding cover is sleeved outside the locking portion, the small diameter end of the tapered portion is close to the unhooking head, the outer diameter of the large diameter end of the tapered portion is larger than the inner diameter of the first sliding member, and the tapered portion is used to limit the movement of the sliding cover along the horizontal direction.

8. The fishhook remover according to claim 1, characterized in that: The decoupling head is in the shape of a bullet.

9. The fishhook remover according to claim 8, characterized in that: A notch is provided on one side of the dehooking head. A dehooking hole and a fishing line groove are also provided on the dehooking head. The notch is communicated with the dehooking hole, and the fishing line groove is used for inserting the fishing line.

10. The fishhook remover according to claim 1, characterized in that: There are four balls, and the locking sleeve is evenly distributed with four mounting grooves around its circumference.

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