Stroke-adjustable latch hook assembly and hook lock

Abstract

The utility model belongs to the technical field of hook lock component parts, and discloses a stroke-adjustable lock hook assembly and a hook lock. The lock hook assembly with the adjustable stroke comprises a lock hook which comprises a hook-shaped lock hook body and a cylindrical extending part connected with the non-hooking end of the lock hook body, and an elastic part connected with the extending part, a containing groove used for containing the extending part is formed in the lock hook frame; the adjusting part is arranged in the containing groove, at least part of the adjusting part extends out of the containing groove, and the adjusting part is configured to control the length of the extending part in the containing groove so as to adjust the stroke of the latch hook assembly. According to the utility model, by arranging the lock hook and the lock hook frame which are mutually sleeved and connected and the adjusting part for controlling the extension part of the lock hook to move, the stroke of the lock hook assembly is adjusted, and the pre-tightening force can be adjusted as required when being installed and debugged, so that convenience is provided for debugging and overhauling; and due to the combined component structure, the overall sectional dimension of the lock hook assembly is larger, and the component bearing capacity is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of hook lock components, and in particular relates to a hook assembly with adjustable stroke and a hook lock. Background Art

[0002] Hook lock is a common lock structure. It is mainly used to lock various fairings and maintenance doors on aircraft due to its simple structure, affordable price, easy installation and maintenance. Its working principle is to lock the door through the interaction between the metal lock hook and the lock body. When the door is closed, the metal lock hook will be inserted into the hole inside the lock body, and the door can be locked or unlocked by turning or pulling the key.

[0003] The commonly used hook lock assembly currently consists mainly of two parts: a lock hook and a bolt. During installation, the lock hook and the bolt need to be installed on the structural parts of the machine body respectively. Because the lock hook is a component with a fixed length, special tools must be used to adjust the installation position of the bolt on the machine body structure during installation and debugging of the preload. The installation and debugging are inconvenient, and the lock hook has a small bearing capacity and cannot be used in a working environment with a large load, and its scope of use is limited.

[0004] Therefore, there is an urgent need to provide a hook assembly and hook lock with adjustable stroke that can adjust the length of the hook and has a stronger load-bearing capacity to overcome the above problems.

[0005] In view of this, this application is hereby filed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, and the purpose is to provide a stroke-adjustable lock hook assembly which can adjust the length of the lock hook and has a stronger load-bearing capacity.

[0007] Another object of the present invention is to provide a hook lock using the above-mentioned lock hook assembly with adjustable stroke.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is: a lock hook assembly with adjustable stroke, comprising:

[0009] A lock hook, the lock hook comprising a hook-shaped lock hook body and a cylindrical extension connected to a non-hook holding end of the lock hook body;

[0010] A lock hook frame, wherein the lock hook frame is provided with a receiving groove for receiving the extension portion;

[0011] An adjusting component is disposed in the receiving slot and at least partially extends out of the receiving slot, and the adjusting component is configured to control the length of the extension portion in the receiving slot to adjust the stroke of the locking hook assembly.

[0012] According to an embodiment of the present utility model, wherein the adjusting component is an adjusting nut, and the adjusting component is sleeved on the extending portion;

[0013] An end of the extension portion close to the lock hook frame is provided with an external thread structure that matches the internal thread structure of the adjustment component.

[0014] According to an embodiment of the utility model, a waist-shaped hole is further provided on the side wall of the lock hook frame, and the waist-shaped hole connects the receiving groove with the outside;

[0015] A protrusion is arranged on the peripheral wall of the extension part, and the protrusion is inserted into the waist-shaped hole. The protrusion and the waist-shaped hole play the role of limiting the moving stroke range of the lock hook and limiting the lock hook from performing linear non-rotational movement.

[0016] According to an embodiment of the present utility model, the diameter of the protrusion is equal to or smaller than the width of the waist-shaped hole.

[0017] According to an embodiment of the present invention, the length direction of the waist-shaped hole is parallel to the axial direction of the extending portion.

[0018] According to one embodiment of the utility model, the extension portion is provided with a blind hole recessed along its radial direction, the protrusion is a cylindrical pin, and the protrusion is partially inserted into the blind hole.

[0019] Alternatively, the extension portion is provided with a through hole penetrating the extension portion along its diameter direction, the protrusion portion is a cylindrical pin, and the protrusion portion is partially inserted into the through hole.

[0020] According to an embodiment of the present utility model, the waist-shaped hole is arranged at a position to avoid the sleeve connection of the adjustment component relative to the extension part;

[0021] The waist-shaped hole is arranged on a side of the lock hook frame close to and / or away from the lock hook.

[0022] According to an embodiment of the utility model, a stop groove is provided at one end of the adjusting component away from the locking hook body, the stop groove is a concave spherical groove, a plurality of the stop grooves are provided, and the plurality of the stop grooves are evenly distributed in the circumferential direction of the adjusting component;

[0023] The lock hook frame is also provided with an oblique groove, the oblique groove is communicated with the receiving groove, and the oblique groove is recessed in a direction away from the receiving groove;

[0024] A spring and a rolling ball in contact with the spring are arranged in the inclined groove, wherein the spring is a compression spring, and the rolling ball partially extends out of the inclined groove under the support of the spring and contacts the stop groove of the adjusting component.

[0025] According to an embodiment of the present utility model, a blocking portion is provided at one end of the inclined groove facing the receiving groove, and the blocking portion is used to prevent the rolling ball from falling into the receiving groove;

[0026] The portion of the rolling ball extending out of the chute is smaller than the portion of the rolling ball located in the chute.

[0027] The utility model also provides a hook lock, which is applied with the above-mentioned lock hook component with adjustable stroke.

[0028] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0029] 1) In the present invention, the travel of the lock hook assembly is adjusted by providing a lock hook and a lock hook frame that are sleeved and connected to each other, and an adjusting component that controls the movement of the extension portion of the lock hook. The preload force can be adjusted as needed during installation and debugging, which provides convenience for debugging and maintenance;

[0030] 2) In the present invention, the combined component structure makes the overall cross-sectional size of the lock hook assembly larger and the component load-bearing capacity stronger.

[0031] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0033] Figure 1 This is a structural schematic diagram of a lock hook assembly with adjustable stroke in an embodiment of the utility model;

[0034] Figure 2 It is a schematic diagram of a partially sectional structure of a lock hook assembly with adjustable stroke in a top view in an embodiment of the utility model;

[0035] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0036] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure at the middle BB;

[0037] Figure 5The figure is a schematic diagram of the arrangement structure of the rolling balls at the inclined groove in the embodiment of the utility model.

[0038] Description of the main components in the figure:

[0039] 1. Lock hook; 11. Lock hook body; 12. Extension part; 13. Protrusion; 2. Lock hook frame; 21. Accommodating groove; 22. Waist-shaped hole; 23. Oblique groove; 3. Adjustment component; 31. Stop groove; 4. Spring; 5. Rolling ball; 6. Blocking part; 7. Annular groove.

[0040] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] like Figures 1 to 5 As shown, the travel-adjustable lock hook assembly of the utility model comprises:

[0045] A lock hook 1, wherein the lock hook 1 comprises a lock hook body 11 in the shape of a hook and a cylindrical extension portion 12 connected to a non-hooking end of the lock hook body 11;

[0046] A lock hook frame 2, wherein a receiving groove 21 for receiving the extension portion 12 is provided in the lock hook frame 2;

[0047] The adjusting component 3 is disposed in the receiving groove 21 and at least partially extends out of the receiving groove 21 . The adjusting component 3 is configured to control the length of the extending portion 12 in the receiving groove 21 to adjust the stroke of the locking hook assembly.

[0048] In the utility model, by providing the lock hook 1 and the lock hook frame 2 which are fitted and connected to each other, and the adjusting component 3 which controls the movement of the extension portion 12 of the lock hook 1, the stroke of the lock hook assembly can be adjusted, and the preload force can be adjusted as needed during installation and debugging, which provides convenience for debugging and maintenance; the combined component structure makes the overall cross-sectional size of the lock hook assembly larger and the component load-bearing capacity stronger.

[0049] Please refer to the attached Figure 1 To Attachment Figure 3 The lock hook 1 includes a hook end inserted into a hole inside the lock body and a non-hook end arranged opposite to the hook end and connected to the extension portion 12.

[0050] Please refer to the attached Figure 2 and attached Figure 3 In a specific implementation of this embodiment, the adjusting component 3 is an adjusting nut, and the outer side of the adjusting component 3 is provided with knurling for increasing friction, and the adjusting component 3 is sleeved on the extending portion 12;

[0051] An end of the extension portion 12 close to the lock hook frame 2 is provided with an external thread structure that matches the internal thread structure of the adjustment component 3 .

[0052] In the present invention, by providing the mutually matching internal and external thread structures and twisting the adjusting component 3, the lock hook 1 can be driven to approach or move away from the lock hook frame 2, thereby changing the stroke of the lock hook assembly.

[0053] Please refer to the attached Figure 2 To Attachment Figure 4 In a specific implementation of this embodiment, the receiving groove 21 is cylindrical as a whole, and accommodates part of the extension portion 12 and the adjustment component 3.

[0054] Please refer to the attached Figure 1 To Attachment Figure 3 In a specific implementation of this embodiment, a waist-shaped hole 22 is further provided on the side wall of the lock hook frame 2, and the waist-shaped hole 22 connects the receiving groove 21 with the outside;

[0055] A protrusion 13 is provided on the peripheral wall of the extension portion 12, and the protrusion 13 is inserted into the waist-shaped hole 22. The protrusion 13 and the waist-shaped hole 22 play the role of limiting the moving stroke range of the lock hook 1 and limiting the linear non-rotational movement of the lock hook 1, converting the rotational movement of the adjustment component 3 into the horizontal movement of the hook lock 1, thereby achieving the purpose of stroke adjustment.

[0056] In a specific implementation of this embodiment, the diameter of the protrusion 13 is equal to or smaller than the width of the waist-shaped hole 22 .

[0057] In a specific implementation of this embodiment, the length direction of the waist-shaped hole 22 is parallel to the axial direction of the extension portion 12 .

[0058] In a specific implementation of this embodiment, the length of the waist-shaped hole 22 limits the change of the stroke X of the locking hook 1.

[0059] In a specific implementation of this embodiment, the length of the waist-shaped hole 22 is 4-8 mm; preferably, the length of the waist-shaped hole 22 is 6 mm, and accordingly, the stroke X of the locking hook 1 is 105 mm±6 mm.

[0060] In a specific implementation of this embodiment, the extension portion 12 is provided with a blind hole recessed along its radial direction, the protrusion 13 is a cylindrical pin, and the protrusion 13 is partially inserted into the blind hole.

[0061] In another specific implementation of the present embodiment, the extension portion 12 is provided with a blind hole recessed along its own radial direction, and an internal thread structure is provided in the blind hole; the protruding portion 13 is a cylindrical structural member, and one end of the cylindrical structural member is provided with an external thread structure matching the internal thread, and the protruding portion 13 is arranged in the blind hole.

[0062] In another specific implementation of this embodiment, the extension portion 12 is provided with a through hole penetrating the extension portion 12 along its diameter direction, and the protrusion 13 is a cylindrical pin, and the protrusion 13 is partially inserted into the through hole.

[0063] In a specific implementation of this embodiment, the waist-shaped hole 22 is arranged at a position to avoid the sleeve connection of the adjustment component 3 relative to the extension portion 12;

[0064] The waist-shaped hole 22 is disposed on a side of the lock hook frame 2 close to and / or away from the lock hook 1 .

[0065] It is understandable that in order to prevent interference between the movements of the components, appropriate avoidance is required.

[0066] Please refer to the attached Figure 3 and attached Figure 4 In a specific implementation of this embodiment, a stop groove 31 is provided at one end of the adjusting component 3 away from the lock hook body 11, and the stop groove 31 is a spherical groove that is concave (concave toward the direction close to the lock hook body 11), and a plurality of the stop grooves 31 are provided, and the plurality of stop grooves 31 are evenly distributed in the circumferential direction of one end surface of the adjusting component 3;

[0067] The lock hook frame 2 is also provided with an inclined groove 23, the inclined groove 23 is connected with the receiving groove 21, and the inclined groove 23 is recessed in a direction away from the receiving groove 21;

[0068] A spring 4 and a rolling ball 5 in contact with the spring 4 are arranged in the inclined groove 23 . The spring 4 is a compression spring. The rolling ball 5 partially extends out of the inclined groove 23 under the support of the spring 4 and contacts the stop groove 31 of the adjusting component 3 .

[0069] In the utility model, by setting a plurality of the stop grooves 31, when the adjusting component 3 is rotated, each time it is rotated a certain angle (causing the locking hook 1 to move forward or backward a certain distance), the ball 5 moves to the next stop groove 31, so that the adjustment becomes stepped, and the rotation process can be understood according to the falling vibration or sound feedback of the ball.

[0070] Please refer to the attached Figure 3 and attached Figure 5 In a specific implementation of this embodiment, a blocking portion 6 is provided at one end of the inclined groove 23 facing the receiving groove 21, and the blocking portion 6 is used to prevent the rolling ball 5 from falling into the receiving groove 21;

[0071] The portion of the rolling ball 5 extending out of the inclined groove 23 is smaller than the portion in the inclined groove 23 .

[0072] In the utility model, the above-mentioned setting of fixing the spring can prevent the rolling ball 5 and the spring 4 from falling off, and the spring 4 and the inclined groove 23 from falling off during the rotation process, thereby ensuring the normal operation of the mechanism function.

[0073] In a specific implementation of this embodiment, the portion of the rolling ball 5 extending out of the inclined groove 23 and abutting against the stop groove 31 accounts for less than one-half of the total volume, and the portion of the rolling ball 5 extending out of the inclined groove 23 and abutting against the stop groove 31 accounts for more than one-fifth of the total volume. Preferably, the portion of the rolling ball 5 extending out of the inclined groove 23 and abutting against the stop groove 31 accounts for one-quarter of the total volume.

[0074] It can be understood that when the portion of the ball 5 extending out of the inclined groove 23 accounts for one quarter of the total volume of the ball 5 , the concave volume of the stop groove 31 also accounts for one quarter of the total volume of the ball 5 .

[0075] Please refer to the attached Figure 5 In a specific implementation of the present embodiment, the blocking portion 6 is arranged between the inclined groove 23 and the receiving groove 21, and the side of the blocking portion 6 close to the inclined groove 23 is an arc surface, and the arc surface is in contact with the surface of the rolling ball 5; the blocking portion 6 gradually increases its own cross-sectional area along the axis of the inclined groove 23 in a direction away from the receiving groove 21 toward the receiving groove 21, so as to prevent the rolling ball 5 from falling into the receiving groove 21.

[0076] When the adjusting component 3 is rotated, the ball 5 breaks away from the original stop groove 31 and moves toward the direction close to the inclined groove 23. The ball 5 completely enters the inclined groove 23, and the compression spring is further compressed. When the adjusting component 3 is rotated by a certain angle, the ball 5 moves away from the inclined groove 23 under the action of the spring 4, and the ball 5 extends out of the inclined groove 23 again and abuts against another stop groove 31.

[0077] In a specific implementation of this embodiment, six stop grooves 31 are provided on the adjusting component 3, any two adjacent stop grooves 31 among the six stop grooves 31 are spaced 60° apart, at least one inclined groove 23 is provided, and at least one corresponding spring 4 and ball 5 are also provided.

[0078] Please refer to the attached Figure 4 In a specific implementation of this embodiment, a plurality of stop grooves 31 are provided on the adjusting component 3. An annular groove 7 is also provided on the end surface of the adjusting component 3 provided with the stop groove 31, and the annular groove 7 connects the plurality of stop grooves 31; the center of the annular groove 7 coincides with the center of a virtual circle formed by the centers of the maximum cross sections of the plurality of stop grooves 31, and the recessed depth of the annular groove 7 toward the direction close to the lock hook body 11 is less than the recessed depth of the stop groove 31 toward the direction close to the lock hook body 11.

[0079] In the present invention, the setting of the annular groove 7 provides a guiding function for the adjustment component 3 to rotate relative to the ball 5, thereby ensuring the normal rotation of the adjustment component 3.

[0080] The present application provides a lock hook assembly with adjustable stroke. When assembled and used: the spring 4 and the ball 5 are installed in the inclined groove 23, the adjusting component 3 is installed in the receiving groove 21, and the spring 4 is against the stop groove 31 of the adjusting component 3; the extension portion 12 of the lock hook 1 is extended into the receiving groove 21 and threadedly connected with the adjusting component 3 placed in the receiving groove 21, and the protrusion 13 is installed on the extension portion 12 to realize the assembly of the lock hook assembly; when in use, the adjusting component 3 is rotated manually or with a pin to control the change of the stroke of the lock hook assembly, thereby completing the preload adjustment of the lock hook assembly.

[0081] The utility model also provides a hook lock, which is applied with the above-mentioned lock hook component with adjustable stroke.

[0082] By applying the lock hook assembly, the hook lock has a controllable function of adjusting the preload force as needed, which is convenient for subsequent maintenance and repair; at the same time, the use of a lock hook assembly with a larger cross-sectional size makes the overall load-bearing capacity of the hook lock stronger and the scope of application wider.

[0083] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A locking hook assembly with adjustable stroke, characterized in that: include: A locking hook (1), the locking hook (1) comprising a hook-shaped locking hook body (11) and a cylindrical extension portion (12) connected to a non-hooking end of the locking hook body (11); A lock hook frame (2), wherein a receiving groove (21) for receiving the extension portion (12) is provided in the lock hook frame (2); An adjusting component (3), the adjusting component (3) is arranged in the receiving groove (21) and at least partially extends out of the receiving groove (21), and the adjusting component (3) is configured to control the length of the extension portion (12) in the receiving groove (21) to adjust the stroke of the locking hook assembly.

2. A locking hook assembly with adjustable stroke according to claim 1, characterized in that: The adjusting component (3) is an adjusting nut, and the adjusting component (3) is sleeved on the extending portion (12); An end of the extension portion (12) close to the lock hook frame (2) is provided with an external thread structure that matches the internal thread structure of the adjustment component (3).

3. The stroke-adjustable locking hook assembly according to claim 2, characterized in that: A waist-shaped hole (22) is also provided on the side wall of the lock hook frame (2), and the waist-shaped hole (22) connects the receiving groove (21) with the outside; A protrusion (13) is provided on the peripheral wall of the extension portion (12), and the protrusion (13) is inserted into the waist-shaped hole (22). The protrusion (13) and the waist-shaped hole (22) play the role of limiting the moving stroke range of the lock hook (1) and limiting the lock hook (1) from performing linear non-rotational movement.

4. The stroke-adjustable locking hook assembly according to claim 3, characterized in that: The diameter of the protruding portion (13) is equal to or smaller than the width of the waist-shaped hole (22).

5. The stroke-adjustable locking hook assembly according to claim 4, characterized in that: The length direction of the waist-shaped hole (22) is parallel to the axial direction of the extension portion (12).

6. The stroke-adjustable locking hook assembly according to claim 3, characterized in that: The extension portion (12) is provided with a blind hole recessed in its radial direction, the protrusion (13) is a cylindrical pin, and a portion of the protrusion (13) is inserted into the blind hole. Alternatively, the extension portion (12) is provided with a through hole penetrating the extension portion (12) along its diameter direction, and the protrusion (13) is a cylindrical pin, and the protrusion (13) is partially inserted into the through hole.

7. The stroke-adjustable locking hook assembly according to claim 3, characterized in that: The waist-shaped hole (22) is arranged at a position that avoids the sleeve connection of the adjustment component (3) relative to the extension part (12); The waist-shaped hole (22) is arranged on a side of the lock hook frame (2) close to and / or away from the lock hook (1).

8. The stroke-adjustable locking hook assembly according to claim 2, characterized in that: A stop groove (31) is provided at one end of the adjusting component (3) away from the locking hook body (11); the stop groove (31) is a concave spherical groove; a plurality of the stop grooves (31) are provided, and the plurality of the stop grooves (31) are evenly distributed in the circumferential direction of the adjusting component (3); The lock hook frame (2) is also provided with an inclined groove (23), the inclined groove (23) is communicated with the receiving groove (21), and the inclined groove (23) is recessed in a direction away from the receiving groove (21); A spring (4) and a rolling ball (5) in contact with the spring (4) are arranged in the inclined groove (23); the spring (4) is a compression spring; the rolling ball (5) partially extends out of the inclined groove (23) under the support of the spring (4) and contacts the stop groove (31) of the adjusting component (3).

9. The stroke-adjustable locking hook assembly according to claim 8, characterized in that: A blocking portion (6) is provided at one end of the inclined groove (23) facing the receiving groove (21), and the blocking portion (6) is used to prevent the rolling ball (5) from falling into the receiving groove (21); The portion of the rolling ball (5) extending out of the inclined groove (23) is smaller than the portion located in the inclined groove (23).

10. A hook lock, characterized in that: A locking hook assembly with adjustable stroke as claimed in any one of claims 1 to 9 is used.

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