Length-adjustable lock structure

Abstract

The utility model relates to the technical field of lock structures, in particular to a length-adjustable lock bar structure which comprises a lock bar, a bar cylinder and a middle sleeve which are sequentially arranged from inside to outside, the lock bar is inserted into the bar cylinder, one end of the middle sleeve can be fixedly connected with a dull lock panel, a semi-spiral guide groove is formed in the middle sleeve, and the middle sleeve is fixedly connected with the dull lock panel. The outer side face of the barrel is provided with an elastic outer protruding part contained in the guide groove, the middle sleeve is rotated to enable the elastic outer protruding part to move along the guide groove, and meanwhile the middle sleeve can stretch out of one end of the barrel and partially cover the lock barrel or retract to the barrel. According to the lock bar structure, through the design of the guide groove in the middle sleeve and the elastic outwards-protruding part on the bar cylinder, the middle sleeve is rotated to enable the elastic outwards-protruding part to move along the guide groove, the middle sleeve can axially move relative to the bar cylinder, and therefore the lock bar is partially covered, namely the length of the lock bar extending out of the middle sleeve is adjusted; the device is simple in design structure, convenient to operate and wide in application prospect.

Description

Technical Field

[0001] This utility model relates to the field of lock structure technology, and in particular to an adjustable length lock structure. Background Technology

[0002] With the diversification of door lock structures, different locks have limitations on the extension length of the locking bolt, requiring bolts of varying lengths to accommodate different lock requirements. Most existing adjustable bolt length locks use a linear push-pull method to adjust the bolt's extension length. The applicant discovered that this design has the problem of potential damage to parts if operated improperly. Utility Model Content

[0003] To achieve the above objectives, this utility model provides an adjustable length locking structure, comprising a locking clip, a clip tube, and an intermediate sleeve arranged sequentially from the inside out. The locking clip is inserted into the clip tube, and one end of the intermediate sleeve can be fixedly connected to a locking panel. The intermediate sleeve has a semi-spiral guide groove, and the outer side of the clip tube has an elastic protrusion that is accommodated in the guide groove. By rotating the intermediate sleeve and moving the elastic protrusion along the guide groove, the intermediate sleeve can extend from one end of the clip tube and partially cover the locking clip, or the intermediate sleeve can retract onto the clip tube.

[0004] In some possible embodiments, both ends of the guide groove extend horizontally along the circumference of the intermediate sleeve to form locking sections. The two locking sections are respectively located on two symmetrical sides of the intermediate sleeve, and the distances between the two locking sections and the ends of the intermediate sleeve are not equal.

[0005] In some possible embodiments, the two locking segments are connected by an arc-shaped transition segment, the width of which is greater than the width of the locking segments.

[0006] In some possible embodiments, a clamping sleeve is also sleeved outside the intermediate sleeve. One end of the clamping sleeve is fixedly connected to the sharpening sleeve. An elastic inner protrusion is provided on the side of the clamping sleeve. The elastic inner protrusion is integrally formed with the clamping sleeve. Two positioning pin holes are opened on the side of the intermediate sleeve to cooperate with the elastic inner protrusion. The two positioning pin holes are respectively located on two symmetrical sides of the intermediate sleeve, and the distances between the two positioning pin holes and the end of the intermediate sleeve are not equal.

[0007] In some possible embodiments, the end of the intermediate sleeve is provided with two symmetrical positioning ribs, which can be inserted into the positioning holes of the locking panel along with the intermediate sleeve.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: The adjustable length locking structure of this utility model, through the design of the guide groove on the intermediate sleeve and the elastic protrusion on the sharp tube, allows the intermediate sleeve to be rotated so that the elastic protrusion moves along the guide groove, and the intermediate sleeve can move axially relative to the sharp tube, thereby partially covering the locking point, that is, adjusting the length of the locking point extending from the intermediate sleeve. The design structure of this utility model is simple and easy to operate. During the adjustment process, the elastic protrusion always moves in the guide groove, and the movement direction is clear, avoiding the problem of parts getting stuck or damage caused by improper operation. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 A three-dimensional structural assembly drawing of the locking structure provided in the embodiment of this utility model;

[0011] Figure 2 A cross-sectional view of the locking structure provided in the embodiment of this utility model;

[0012] Figure 3 A three-dimensional structural diagram of the intermediate sleeve provided in an embodiment of this utility model.

[0013] Reference numerals: 1. Locking tool; 2. Sharp tube; 21. Elastic outer protrusion; 3. Intermediate sleeve; 31. Guide groove; 311. Locking section; 312. Arc-shaped transition section; 32. Positioning pin hole; 33. Positioning rib; 4. Clamping tube; 41. Elastic inner protrusion. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] like Figure 1 and Figure 2The adjustable length locking structure shown includes a locking clip 1, a clip 2, and an intermediate sleeve 3. The locking clip 1 is inserted into the clip 2. One end of the intermediate sleeve 3 can be fixedly connected to a locking panel. The intermediate sleeve 3 has a semi-helical guide groove 31. The outer side of the clip 2 has an elastic protrusion 21 that is accommodated in the guide groove 31. When it is necessary to adjust the length of the locking structure, the intermediate sleeve 3 can be rotated to move the elastic protrusion 21 along the guide groove 31. Since the guide groove 31 is semi-helical, the movement of the elastic protrusion 21 will cause the intermediate sleeve 3 to move axially relative to the clip 2. When the elastic protrusion 21 moves to the helical part of the guide groove 31, the intermediate sleeve 3 will extend or retract axially along the clip 2, thereby realizing the adjustment of the length of the locking structure. When the elastic protrusion 21 moves to one end of the guide groove 31, the intermediate sleeve 3 will be locked in the current position, keeping the length of the locking structure unchanged.

[0016] In some possible embodiments, both ends of the guide groove 31 extend horizontally along the circumference of the intermediate sleeve 3 to form locking sections 311. The two locking sections 311 are respectively located on two symmetrical sides of the intermediate sleeve 3, and the distances between the two locking sections 311 and the ends of the intermediate sleeve 3 are not equal. This design allows the locking structure to achieve different length locking positions when adjusting the length to meet different usage requirements.

[0017] In some possible embodiments, the two locking segments 311 are connected by an arc-shaped transition segment 312, the width of which is greater than the width of the locking segments 311. This design allows the elastic protrusion 21 to transition more smoothly when moving from one locking segment 311 to another, avoiding jamming.

[0018] In some possible embodiments, a clamping sleeve 4 is also sleeved outside the intermediate sleeve 3, with one end of the clamping sleeve 4 fixedly connected to the cylindrical sleeve 2. The clamping sleeve 4 has an elastic inner protrusion 41 on its side, which is integrally formed with the clamping sleeve 4. Two positioning pin holes 32 are provided on the side of the intermediate sleeve 3, which mate with the elastic inner protrusion 41. The two positioning pin holes 32 are located symmetrically on both sides of the intermediate sleeve 3, and the distances between the two positioning pin holes 32 and the ends of the intermediate sleeve 3 are unequal. This design allows the intermediate sleeve 3 to achieve more precise positioning and locking when its length is adjusted, through the engagement of the elastic inner protrusion 41 and the positioning pin holes 32.

[0019] In some possible embodiments, the end of the intermediate sleeve 3 is provided with two symmetrical positioning ribs 33, which can be inserted into the positioning holes of the locking panel along with the intermediate sleeve 3. This design allows the intermediate sleeve 3 to be more securely fixed to the locking panel during installation, preventing loosening or falling off.

[0020] In summary, the adjustable length locking structure of this utility model achieves adjustable length through the design of the guide groove and elastic protrusion on the intermediate sleeve. The structure is simple and easy to operate. During the adjustment process, the elastic protrusion always moves within the guide groove, with a clear direction of movement, avoiding the problem of parts getting stuck or being damaged due to improper operation.

[0021] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A locking structure with adjustable length, characterized in that, The device includes a locking clip (1), a clip (2), and an intermediate sleeve (3) arranged sequentially from the inside out. The locking clip (1) is inserted into the clip (2). One end of the intermediate sleeve (3) can be fixedly connected to the locking panel. The intermediate sleeve (3) has a semi-spiral guide groove (31). The outer side of the clip (2) has an elastic protrusion (21) that is accommodated in the guide groove (31). When the intermediate sleeve (3) is rotated and the elastic protrusion (21) moves along the guide groove (31), the intermediate sleeve (3) can extend from one end of the clip (2) and partially cover the locking clip (1) or the intermediate sleeve (3) can retract back onto the clip (2).

2. The adjustable length locking structure according to claim 1, characterized in that, Both ends of the guide groove (31) extend horizontally along the circumference of the intermediate sleeve (3) to form locking sections (311). The two locking sections (311) are respectively located on the two symmetrical sides of the intermediate sleeve (3), and the distances between the two locking sections (311) and the ends of the intermediate sleeve (3) are not equal.

3. The adjustable length locking structure according to claim 2, characterized in that, The two locking segments (311) are connected by an arc-shaped transition segment (312), the width of which is greater than the width of the locking segment (311).

4. The adjustable length locking structure according to claim 1, characterized in that, A clamping sleeve (4) is also sleeved outside the intermediate sleeve (3). One end of the clamping sleeve (4) is fixedly connected to the sharp tube (2). An elastic inner protrusion (41) is provided on the side of the clamping sleeve (4). The elastic inner protrusion (41) is integrally formed with the clamping sleeve (4). Two positioning pin holes (32) are opened on the side of the intermediate sleeve (3) to cooperate with the elastic inner protrusion (41). The two positioning pin holes (32) are respectively located on the two symmetrical sides of the intermediate sleeve (3), and the distances between the two positioning pin holes (32) and the end of the intermediate sleeve (3) are not equal.

5. The adjustable length locking structure according to claim 1, characterized in that, The end of the intermediate sleeve (3) is provided with two symmetrical positioning ribs (33), which can be inserted into the positioning holes of the locking panel along with the intermediate sleeve (3).

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