A MECHANICAL LOCK

Abstract

TITLE: A MECHANICAL LOCK The present utility model proposes a mechanical lock, comprising a lock body (100), a connecting piece and a bolt (200), in the lock body (100) being provided a cylinder (110), the bolt (200) being connected to one end of the connector to which is also connected a fixed piece (300) which is fixed on the lock body (100), the bolt (200) being provided a locking notch (201), the lock body (100) is provided with a transmission element (130) in contact with the cylinder (110), to this transmission element (130) being rotatably assembled at least one locking base (140) provided with an engagement part (142) which can engage in the locking notch (201) of the bolt (200). In the lock body (100) there is also a guide element (150), which includes a guide structure which pushes the locking base (140) to rotate with the transmission element (130).Figure for the summary: Fig. 3.

Description

Title of the invention: A MECHANICAL LOCK technical field

[0001] The present utility model belongs to the technical field of locks, and specifically relates to a mechanical lock with a steel chain or cable. PREVIOUS STATE OF TECHNOLOGY

[0002] Currently, steel chain or cable locks are mainly used as locks for two-wheeled vehicles, allowing the vehicle wheel to be locked or the entire vehicle to be locked to a tree, fence, or other fixed object. The locking mechanism between the steel cable or chain and the lock body of this type of lock is complex.For example, in a chain lock published under application number CN110318600A, the unlocking principle of this chain lock is as follows: the key, inserted into the keyhole, turns clockwise and counterclockwise so that the cylinder simultaneously rotates in the same direction. The sliding sleeve can move forward and backward along the axis of the lock body thanks to the coordination between the spiral groove and the transmission column, causing the engagement and disengagement of the locking plate in and out of the locking notch. The locking plate slides into the locking notch and presses on the locking column, so that a portion of the locking column is exposed and engages in the arc groove, thus locking the bolt.When the clamping plate slides out of the arc groove, it does not strike the locking column, allowing the bolt to be withdrawn from the locking cavity and thus unlocking the bolt. This results in a lock with numerous parts and a complex structure. Space must be reserved for the sliding sleeve within the lock body, making the lock quite long and requiring its components to be further lengthened, thus increasing material consumption and cost. CONTENTS OF THE UTILITY MODEL

[0003] The technical problem that the present utility model aims to solve is to design a mechanical lock with a simple structure.

[0004] In order to achieve the aforementioned objective, the present utility model proposes the following technical solution:

[0005] A mechanical lock, comprising a lock body, a connecting piece and a bolt, the lock body having a cylinder, the bolt being connected to one end of the connector to which is also connected a fixed piece which is The lock body, with a locking notch provided for the bolt, is fixed to it. The lock body is fitted with a transmission element that engages with the cylinder. At least one locking base, equipped with an engagement portion that can engage with the bolt's locking notch, is rotatably mounted to this transmission element. The lock body also includes a guide element with a guide structure that causes the locking base to rotate with the transmission element. An elastic piece is mounted to the locking base; after the cylinder is unlocked, this piece disengages the locking base's engagement portion from the notch.

[0006] Preferably, said locking base and the transmission element are assembled mutually in a movable manner via a pivot.

[0007] Preferably, said pivot is assembled as a single unit to the locking base, or fixed in a split on the locking base, the side wall of the transmission element is provided with a locking notch allowing the end of the pivot to engage laterally.

[0008] Preferably, said elastic part is a spring, a bearing portion extending towards the axial position of the transmission element is provided on the locking base, and a mounting groove is formed at the position corresponding to the bearing portion on the transmission element. The spring is embedded in this mounting groove, one end of the spring bearing against the bottom of the mounting groove, the other end bearing against the bearing portion on the locking base to continuously apply an elastic force pushing the locking base out of the locking notch.

[0009] Preferably, said guiding structure is a guiding surface, this guiding surface being the inner wall of a through groove disposed in the guiding element, this guiding surface being an inclined or curved face. The locking base extends to this through groove and remains in close contact with the inner wall of the guiding element under the effect of the elastic part.

[0010] Preferably, it has two locking bases which are arranged symmetrically.

[0011] Preferably, said connecting piece is a steel chain or cable.

[0012] Preferably, said fixed part is assembled in the middle of the connecting part.

[0013] Preferably, said lock body also comprises a housing, a core sleeve, and a locking sleeve. Said core sleeve movably fits the cylinder, the locking sleeve fits the core sleeve, and the housing fits the locking sleeve. The fixed part is provided with a male socket on which an annular groove is provided. The core sleeve is provided with a receiving hole into which the male socket is inserted, and a longitudinal groove is provided on the locking sleeve outside the core sleeve, on one end of this A through groove is provided for the insertion of the male plug. The width of the other parts of the longitudinal groove is less than the diameter of the male plug but greater than the diameter of the annular groove, thus allowing the locking sleeve to engage in the annular groove of the male plug.

[0014] Preferably, said housing and said locking sleeve, as well as said locking sleeve and said core sleeve, are fixedly assembled to each other via a pivot.

[0015] The beneficial effect of the present utility model is that, according to this utility model, the rotation of the locking base is driven by the rotation of the transmission element, and through the interaction between the guide element and the elastic part, the locking base can rotate as the transmission element rotates, so that the engagement portion of the locking base engages in the locking notch. Compared to traditional locks, the present utility model has a simple structure and does not require axial space for sliding, thus reducing the axial length and lowering the cost. DESCRIPTION OF ATTACHED DRAWINGS

[0016] Fig. 1 represents a schematic view of the overall structure of the present utility model;

[0017] Fig. 2 represents a schematic view of the structure of the present housingless utility model;

[0018] Fig. 3 represents a cross-sectional view of the present utility model;

[0019] Fig. 4 represents a schematic view of the structure of the lock cylinder;

[0020] Fig. 5 represents a schematic view of the core sleeve structure;

[0021] Fig. 6 represents a schematic view of the structure of the locking sleeve;

[0022] Fig. 7 represents a schematic view of the structure of the locking base;

[0023] Fig. 8 represents a schematic view of the structure of the guide element;

[0024] Figure 9 represents a schematic view of the structure of the element of transmission;

[0025] Fig. 10 represents another schematic view of the structure of the transmission element. DESCRIPTION OF THE INVENTION

[0026] The technical solutions of the embodiments within the framework of this utility model will be clearly and completely described below in conjunction with the accompanying drawings in this utility model. It is understood that the embodiments described relate only to a subset of the embodiments according to this utility model, but do not include all the embodiments. Any other embodiment obtained by a person skilled in the art without inventive effort based on the embodiments in this utility model will be covered by the scope of protection of this utility model.

[0027] Embodiment

[0028] Please refer to Figures 1 to 10, which illustrate a chain lock, which is a mechanical lock. This chain lock comprises a lock body 100, a connecting piece, and a bolt 200. The connecting piece is a chain in this embodiment, and it may be a steel cable, etc. The lock body 100 contains a cylinder 110. The bolt 200 is assembled to one end of the connecting piece, and to the other end of the connecting piece is assembled a fixed piece 300; the fixed piece 300 is attached to the lock body 100.The fixed part 300 is positioned in the middle of the connecting part, thus several locking methods are available. For example, in one locking method, the chain portion on one side of the fixed part 300 passes around the vehicle, while the chain portion on the other side passes around a shaft to connect to the bolt 200. In a second method, the side of the part 300 where the bolt 200 is located passes directly around the shaft and the vehicle to fasten them together. The bolt 200 has a locking notch 201, which is an annular groove. Inside the lock body 100 is a transmission element 130 that engages with the cylinder 110. In the center of this transmission element 130 is a transmission recess 131 that engages with one end of the cylinder 110.On the side furthest from the key insertion point of the cylinder 110, a transmission shaft 111 is provided, its shape adapted to that of the transmission recess. This transmission shaft 111 and the transmission recess are non-circular in shape, ideally square or D-shaped. At least one locking base 140 is rotatably mounted to this transmission element 130. In the present embodiment, it has two symmetrically arranged locking bases 140. The said locking bases 140 are movably assembled to the transmission element 130 by means of a pivot 141. The locking base 140 is provided with an engagement part 142 which can engage in the locking notch 201 of the bolt 200. In the lock body 100, a guide element 150 is also provided; the guide element 150 has a guide structure which causes the locking base 140 to rotate with the transmission element 130.A spring element 120 is assembled to the locking base 140. After the cylinder 110 is unlocked, this element disengages the engagement portion 142 of the locking base 140 from the locking notch 201. In this embodiment, the spring element 120 is a spring, which can be either a push spring, as in this embodiment, or a tension spring acting in the opposite direction. The force exerted by the element... The elastic element 120 can be modified by adjusting the position of the elastic element 120. Any modification that allows an elastic force to be applied in the direction causing the engagement portion 142 of the locking base 140 to disengage from the locking notch 201 must be covered by the scope of protection of this application. In this embodiment, the plane in which the locking base 140 rotates is perpendicular to the plane in which the transmission element 130 rotates.

[0029] In this embodiment, the pivot 141 on said locking base 140 is assembled as a single unit to the locking base 140.It may also be another technical solution equivalent to that of the present embodiment; for example, the solution in which the pivot 141 is split-mounted on the locking base 140 also achieves the objective of the invention of the present application, since this means is essentially identical to the solution according to the present application. The side wall of the transmission element 130 is provided with a locking notch 132 allowing the end of the pivot 141 to engage laterally; the side wall of this locking notch 132 is open, thus facilitating the insertion of the pivot 141 into the locking base 140.After the mounting of the locking base 140, the transmission element 130 is mounted on the inner wall of the lock body 100. The housing 101 of the lock body 100 remains in close contact with the transmission element 130, so that the opening of the locking notch 132 is closed, thus preventing the pivot 141 of the transmission element 130 from sliding out of the locking notch 132. This locking notch 132 is also designed to be integrated into the transmission element 130, without the need for additional machining, further reducing the machining steps.

[0030] In this embodiment, said locking base 140 is provided with a bearing portion 143 which extends towards the axial position of the transmission element 130, and a mounting groove 133 is provided at the corresponding position corresponding to the bearing portion 143 on the transmission element 130. A spring is embedded in this mounting groove 133, one end of the spring bearing against the bottom of the mounting groove 133, the other end bearing against the bearing portion 143 on the locking base 140 to continuously apply an elastic force pushing the locking base 140 so that the engagement portion 142 is released from the locking notch 201.

[0031] Said guiding structure is a guiding surface 151, this guiding surface 151 being the inner wall of a through groove 1032 disposed in the guiding element 150, this guiding surface 151 being an inclined or curved face. The locking base 140 extends to this through groove 1032, and the effect of the elastic part 120 allows the locking base 140 to remain in close contact with the inner wall of the guiding element 150. Since it has two bases of blockingl40, two guide surfaces 151 are provided in the present embodiment, and they are arranged symmetrically.

[0032] In this embodiment, said lock body 100 also comprises a housing 101, a core sleeve 102 and a locking sleeve 103. Said core sleeve 102 movably fits the cylinder 110, the locking sleeve 103 fits the core sleeve 102, and the housing 101 fits the locking sleeve 103. The fixed part 300 is provided with a male socket on which an annular groove 121 is provided. The core sleeve 102 is provided with a receiving hole 1021 into which the male socket is to be inserted, and a longitudinal groove 1031 is provided on the locking sleeve 103 outside the core sleeve 102; on one end of the longitudinal groove 1031 is provided a through groove 1032 allowing the insertion of the male socket.The width of the other parts of the longitudinal groove 1031 is less than the diameter of the male connector but greater than the diameter of the annular groove 121, thus allowing the locking sleeve 103 to engage in the annular groove 121 of the male connector. The housing 101 and the locking sleeve 103, as well as the locking sleeve 103 and the core sleeve 102, are fixedly assembled to one another by means of a pivot 141. In this embodiment, during the assembly of the fixed part 300, the cylinder 110, the core sleeve 102, the locking sleeve 103, and the housing 101 are assembled one by one by interlocking. First, the receiving hole on the core sleeve 102, the longitudinal groove 1031 and the through groove 1032 on the locking sleeve 103, as well as the receiving hole on the housing 101, are aligned concentrically.Next, after inserting the fixed part 300, the locking sleeve 103 is rotated so that the end of the longitudinal groove 1031, away from the through groove 1032, limits the position of the fixed part 300. Finally, the core sleeve 102, the locking sleeve 103, and the housing 101 are fixed by means of pivots or by other means. In this embodiment, the guide element is assembled to the core sleeve 102 by engagement to form a relative fixing. It is also possible to fix the guide element to the housing 101.

Claims

Demands

1. A mechanical lock, comprising a lock body (100), a connecting piece and a bolt (200), in the lock body (100) being provided a cylinder (110), the bolt (200) being connected to one end of the connector to which is also connected a fixed piece (300) which is fixed on the lock body (100), the bolt (200) being provided a locking notch (201), characterized in that: the lock body (100) is provided with a transmission element (130) in contact with the cylinder (110), to this transmission element (130) being rotatably assembled at least one locking base (140) provided with an engagement part (142) which can engage in the locking notch (201) of the bolt (200); in the lock body (100) is also provided a guide element (150), which includes a guide structure which pushes the locking base (140) to rotate with the transmission element (130);to the locking base (140) is assembled an elastic part (120) which, after unlocking the cylinder (110), causes the engagement part (142) of the locking base (140) to be released from the locking notch (201).

2. A mechanical lock according to claim 1, characterized in that said locking base (140) and transmission element (130) are movably assembled together by means of a pivot (141).

3. A mechanical lock according to claim 2, characterized in that: said pivot (141) is assembled as a single unit to the locking base (140), or fixed separately to the locking base (140), the side wall of the transmission element (130) is provided with a locking notch (132) allowing the end of the pivot (141) to engage laterally in it.

4. A mechanical lock according to claim 1 or 2 or 3, characterized in that: said elastic part (120) is a spring, a bearing portion (143) extending towards the axial position of the transmission element (130) is provided on the locking base (140), and a mounting groove (133) is provided at the position corresponding to the bearing portion (143) on the transmission element (130); the spring is embedded in this mounting groove (133), one end of the spring bearing against the bottom of the mounting groove. (133), the other end bearing against the bearing part (143) on the locking base (140) to continuously apply an elastic force pushing the locking base (140) so that the engagement part (142) is released from the locking notch (201).

5. A mechanical lock according to claim 1 or 2 or 3, characterized in that: said guide structure is a guide surface (151), this guide surface (151) being the inner wall of a through groove (1032) disposed in the guide element (150), this guide surface (151) being an inclined or curved face; the locking base (140) extends to this through groove (1032), and always remains in close contact with the inner wall of the guide element (150) under the effect of the elastic part (120).

6. A mechanical lock according to claim 1, characterized in that it has two locking bases (140) which are arranged symmetrically.

7. A mechanical lock according to claim 1, characterized in that said connecting piece is a steel chain or cable.

8. A mechanical lock according to claim 1, characterized in that said fixed part (300) is assembled in the middle of the connecting part.

9. A mechanical lock according to claim 1, characterized in that said lock body (100) also comprises a housing (101), a core sleeve (102) and a locking sleeve (103); said core sleeve (102) movably fits the cylinder (110), the locking sleeve (103) fits the core sleeve (102), and the housing (101) fits the locking sleeve (103); the fixed part (300) is provided with a male socket on which an annular groove (121) is provided; the core sleeve (102) is provided with a receiving hole (1021) into which the male plug is to be inserted, and a longitudinal groove (1031) is provided on the locking sleeve (103) outside the core sleeve (102), on one end of this groove is provided a through groove (1032) allowing the insertion of the male plug;the width of the other parts of the longitudinal groove (1031) is less than the diameter of the male plug but greater than the diameter of the annular groove (121); 9 thus allowing the locking sleeve (103) to engage in the annular groove (121) of the male plug.

10. A mechanical lock according to claim 9, characterized in that said housing (101) and said locking sleeve (103), as well as said locking sleeve (103) and said core sleeve (102) are fixedly assembled to each other via a pivot (141).

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