A self-locking quick locking mechanism with large locking force

Abstract

The utility model discloses a self-locking quick locking mechanism with large locking force, which is used to solve the problem that the military packaging box requires a locking device with greater locking force and self-locking and anti-loosening, and belongs to the technical field of packaging box locking. The screw rod of the locking bolt of the utility model passes through the locking plate and the head is stuck at the rear side of the locking plate; a limit buckle is extended forward from the bottom plate of the mounting base; the front side of the clamping handle is a clamping part, and two vertical connecting plates are extended backward on the left and right sides of the clamping part, and long grooves are arranged on the two sides of the clamping part. The inner side of the front end of the connecting plate is rotatably connected with the tail of the locking bolt, and the outer side of the rear end is movably riveted with the mounting base; the fixing part of the limit handle is movably riveted to the inner side of the front end of the connecting plate through rivet four, and the hand-held part is movably riveted to the long groove through rivet six, and rivet six is ​​elastically connected to the lower side of the connecting plate through an anti-loosening elastic member, and the limit part realizes the limit of the limit handle by cooperating with the limit buckle, and the anti-loosening elastic member is in a stretched state.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging box locking, relates to heavy equipment and military product packaging, and specifically is a self-locking rapid locking mechanism with a large locking force. Background Art

[0002] When selecting locking buckles for military packaging boxes and industrial heavy equipment, on the one hand, ensuring the airtightness of the product places greater demands on the locking force; on the other hand, military packaging boxes are exposed to random vibration conditions during road, rail, sea and air transportation, and ordinary locking devices are at risk of popping open or loosening, making it difficult to meet the safety and reliability requirements for military transportation and logistics support. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the purpose of the utility model is to provide a self-locking quick locking mechanism with a large locking force, which is used to solve the problem that military packaging boxes and industrial heavy equipment require a locking device with easy operation, simple and reliable structure, greater locking force and self-locking to prevent loosening.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] A self-locking quick locking mechanism with large locking force comprises a locking mechanism and an anti-loosening mechanism, wherein the locking mechanism comprises a locking plate, a locking bolt, a mounting base, and a clamping handle, wherein the screw rod portion of the locking bolt passes through the locking plate and the head is stuck at the rear side of the locking plate, and the locking plate is provided with space for the screw rod portion of the locking bolt to move up and down.

[0006] The mounting base comprises a bottom plate, and a limiting buckle is extended forward from the bottom plate.

[0007] The front side of the clamping handle is the clamping part, and two vertical connecting plates extend backward on the left and right sides of the clamping part. The cross-section of the clamping part is a U-shape with the opening facing downward, and long grooves are provided on the two sides of the U-shape. The tail of the locking bolt is rotatably connected to the inner side of the front end of the connecting plate, and the outer side of the rear end is movably riveted to the mounting base.

[0008] The anti-loosening mechanism includes a limit handle and an anti-loosening elastic part. The limit handle includes a hand-holding part on the front side, a limit part on the middle and lower side, and a fixed part on the middle and upper side. The fixed part is movably riveted to the inner side of the front end of the connecting plate through rivet four, and the hand-holding part is movably riveted to the long groove through rivet six. The rivet six is ​​elastically connected to the lower side of the connecting plate through the anti-loosening elastic part. The limit part limits the limit handle by cooperating with the limit buckle, and the anti-loosening elastic part is in a stretched state.

[0009] When in use, the mounting base is fixed to the flange of the end door of the packaging box, the locking plate is installed on the end door of the packaging box, the rear end of the connecting plate is movably riveted to the mounting base, the fixing part is movably riveted to the inner side of the front end of the connecting plate through rivet four, and the hand-held part is movably riveted to the long groove through rivet six, so that space for the limit handle to rotate relative to the clamping handle can be provided, the anti-loosening elastic part tightens the limit handle and the clamping handle, the head of the locking bolt is stuck on the rear side of the locking plate, and the tail is rotatably connected to the connecting plate.

[0010] After the installation is completed, press the clamping part downward, and the connecting plate drives the locking bolt head to move forward, thereby further tightening the packaging box end door and the packaging box end door flange. At the same time, the clamping handle rotates around the connecting plate and the movable riveted part of the mounting base, driving the limit handle to rotate downward, and finally the limit part of the limit handle is stuck on the limit buckle. At this time, the anti-loosening elastic part tightens the limit handle to prevent the limit part of the limit handle from detaching from the limit buckle, thereby realizing the self-locking function of the locking structure.

[0011] Further preferably, the mounting base also includes a left mounting arm, a middle mounting arm and a right mounting arm which are fixed on the bottom plate and arranged vertically and parallelly, and the middle mounting arm extends forward with a limit buckle, and the horizontal height of the limit buckle is not lower than the horizontal height of the bottom plate.

[0012] Further preferably, it also includes a bolt bushing and rivet 2, wherein through holes are provided on the side walls on both sides of the bolt bushing, an internal thread is provided in the bolt bushing, the tail of the locking bolt is assembled with a anti-loosening nut and then assembled into the bolt bushing, and the rivet 2 passes through the through hole and is movably riveted to the front end of the connecting plate.

[0013] Further preferably, the limiting portion is a rivet three that passes through the lower middle portion of the limiting handle.

[0014] Further preferably, the limit handle also includes an arc groove arranged at the rear of the limit handle, and the rear of the limit handle is installed between the bolt bushing and the clamping handle through the arc groove, and the rivet 2 passes through the through hole and the arc groove and is movably riveted to the front end of the connecting plate.

[0015] Further preferably, a rivet five is riveted through the lower portion of the clamping handle, the anti-loosening elastic member is an anti-loosening spring, one end of the anti-loosening spring is connected to the rivet six, and the other end is connected to the rivet five at the lower portion of the clamping handle.

[0016] The utility model mainly designs a locking structure with simple structure and easy operation. Compared with the traditional buckle structure, it has a greater pressing force and adds an anti-loosening self-locking structure, which can adjust the use length and realize the airtight locking and self-locking anti-loosening requirements of military packaging boxes and industrial heavy equipment.

[0017] The device design has a wide range of application value in packaging boxes and ammunition packaging storage, protection, transportation, etc. The structure is conducive to meeting the requirements of rapid response, airtightness and anti-loosening self-locking of large packaging boxes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 The utility model is represented by a schematic elevation diagram of the structure.

[0021] Figure 2 The utility model is shown in a top view.

[0022] Figure 3 It represents the vertical cross-sectional view of the structure of the utility model.

[0023] Figure 4 A schematic diagram showing the structural elevation of the installation base.

[0024] Figure 5 A top view schematic diagram of the mounting base structure is shown.

[0025] Figure 6 A schematic diagram showing a top view of the limit handle structure.

[0026] Figure 7 Represents a schematic diagram of the existing structure.

[0027] In the figure: 1-mounting base, 11-right mounting arm, 12-bottom plate, 13-limiting buckle, 2-locking plate, 3-locking bolt, 4-anti-loosening nut, 5-bolt bushing, 6-clamping handle, 61-clamping part, 62-connecting plate, 63-long groove, 7-anti-loosening elastic member, 801-rivet one, 802-rivet two, 803-rivet three, 804-rivet four, 805-rivet five, 806-rivet six, 9-limiting handle, 91-hand holding part, 92-limiting part, 93-fixing part, 94-arc groove, 101-end door flange, 102-end door. DETAILED DESCRIPTION

[0028] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the scheme of the utility model will be further described below. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0029] In the description, it should be noted that the terms "first" and "second" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0031] The specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0032] A self-locking quick locking mechanism with large locking force comprises a locking mechanism and an anti-loosening mechanism, wherein the locking mechanism comprises a locking plate 2, a locking bolt 3, a mounting base 1, and a clamping handle 6, wherein the head of the locking bolt 3 is located at the rear side of the locking plate 2, and the tail is located at the front side of the locking plate 2, and the locking plate 2 is provided with a space for the screw portion of the locking bolt 3 to move up and down.

[0033] The mounting base 1 includes a bottom plate 12 and a limiting buckle 13, on which a left mounting arm, a middle mounting arm and a right mounting arm 11 are vertically and parallelly fixed, that is, the mounting base 1 consists of two parallel U-shaped grooves, wherein a limiting buckle 13 extends forward from the middle mounting arm of one of the U-shaped grooves, and the rear portion of the limiting buckle 13 is the same height as the middle mounting arm, and the front portion decreases sharply in height to be in the shape of a small stick, and the lowest horizontal height of the limiting buckle 13 is not lower than the horizontal height of the bottom plate 12.

[0034] The front side of the clamping handle 6 is a clamping part 61, and the rear side is a connecting plate 62. Two vertical connecting plates 62 extend backward on the left and right sides of the clamping part 61, and their cross-section is a U-shape with the opening facing downward. Long grooves 63 are provided on the two sides of the U-shape. The inner side of the front end of the connecting plate 62 is rotatably connected to the tail of the locking bolt 3, and the outer side of the rear end is movably riveted to the mounting base 1 through rivet one 801, and the lower part of the clamping handle 6 is movably riveted with rivet five 805.

[0035] The front end of the clamping handle 6 connecting plate 62 and the rear end of the locking bolt 3 are rotatably installed in the following manner: the clamping handle 6 also includes a bolt bushing 5 and a second rivet 802. Through holes are provided on the side walls of the bolt bushing 5. An internal thread is provided in the bolt bushing 5. The rear end of the locking bolt 3 is assembled with a locking nut 4 and then assembled into the bolt bushing 5. The second rivet 802 passes through the through hole and is movably riveted to the front end of the connecting plate 62. When in use, when the clamping handle 6 rotates around the first rivet 801 on the mounting base 1, the bolt bushing can rotate around the second rivet 802 on the clamping handle 6.

[0036] The anti-loosening mechanism includes a limit handle 9 and an anti-loosening elastic member 7. The limit handle 9 includes a hand-held portion 91 on the front side, a limit portion 92 on the middle and lower side, and a fixed portion 93 on the middle and upper side. The fixed portion 93 is movably riveted to the inner side of the front end of the connecting plate 62 through a rivet four 804, and the hand-held portion 91 is movably riveted to the long groove 63 through a rivet six 806. The rivet six 806 is elastically connected to the lower side of the connecting plate 62 through the anti-loosening elastic member 7. The limit portion 92 is assembled with the limit buckle 13 to limit the limit handle 9. The initial state of the anti-loosening elastic member 7 is a state of tightening the limit portion 92 and the limit buckle 13. The limit portion 92 is a rivet three 803 that passes through the middle and lower part of the limit handle 9.

[0037] The limit handle 9 also includes an arc groove 94 arranged at the rear of the limit handle 9. The rear of the limit handle 9 is installed between the bolt bushing 5 and the clamping handle 6 through the arc groove 94. The rivet 802 passes through the through hole and the arc groove 94 and is movably riveted to the front end of the connecting plate 62 to limit the left and right directions of the limit handle 9.

[0038] The anti-loosening elastic member 7 can be an anti-loosening spring, one end of which is connected to the rivet six 806, and the other end is connected to the rivet five 805 at the lower part of the clamping handle 6.

[0039] When in use, a hole for fixing is provided on the bottom plate of the mounting base 1, and the mounting base is fixed to the end door flange 101 of the packaging box by a countersunk bolt. A hole for fixing is provided on the lower part of the locking plate 2, and the locking plate 2 is also installed on the end door 102 of the packaging box by a countersunk bolt. The rear ends of a pair of connecting plates 62 are respectively riveted to the left mounting arm and the right mounting arm 11 by rivet 1 801, so that the clamping handle 6 can rotate around rivet 1 801 on the mounting base 1. The fixing part 93 is riveted to the inner side of the front end of the connecting plate 62 by rivet 4 804, and the hand-held part 91 is riveted to the long groove 63 by rivet 6 806, so that a space for the limit handle 9 to rotate around rivet 4 804 inside the clamping handle 6 can be provided. The anti-loosening spring tightens the limit handle 9 and the clamping handle 6, and the head of the locking bolt 3 is stuck on the rear side of the locking plate 2, and the tail is rotatably connected to the connecting plate 62.

[0040] After the installation is completed, only the pressing part 61 is pressed downward, and the connecting plate 62 drives the locking bolt head to rotate downward around the rivet 801, and the rotation has a forward displacement component, thereby further tightening the packaging box end door 102 and the packaging box end door flange 101.

[0041] As the clamping handle 6 continuously rotates around rivet one 801, it drives the limit handle 9 to rotate downward together. At a certain moment, rivet three 803 comes into contact with the limit buckle 13 and tends to be prevented from rotating downward by the limit buckle 13. The clamping handle 6 continues to rotate downward around rivet one 801. Rivet three 803 rotates around rivet four 804 due to the obstruction of the limit buckle 13. The long groove 63 provides space for the limit handle 9 to rotate.

[0042] Rivet four 804 is also rotating downward around rivet one 801. At another moment, rivet three 803 passes through the limiting buckle 13 and rotates into place. At this time, the anti-loosening spring can pull back the limiting handle 9 to prevent the limiting handle 9 from rotating around rivet four 804, that is, to prevent the limiting handle limiting portion 92 from being separated from the limiting buckle 13, and further prevent the pressing handle 6 connected to the limiting handle through rivet four 804 from rotating. The anti-loosening spring pulls the limiting portion 92 back and clamps it on the limiting buckle 13, realizing the self-locking and anti-loosening function of the locking structure.

[0043] The locking device can be released in the following manner: hold the clamping part 61 and the hand-holding part 91 together with one hand, hold the hand-holding part, the anti-loosening spring is pulled open, the limit handle 9 rotates around the rivet four 804, the limit part 92 disengages from the limit buckle 13, and then the clamping handle 6 can rotate around the rivet one 801, so that the self-locking quick locking device can be released.

[0044] When there is an installation error, the locking plate 2 and the mounting base 1 may be too close or too far apart. By rotating the locking bolt 3, the locking bolt 3 can be screwed into or out of the bolt bushing 5, thereby achieving stroke adjustment of the locking mechanism.

[0045] In this utility model, the limit buckle 13, the rivet 803 and the anti-loosening spring cooperate to realize the anti-loosening function. The long groove 63 cooperates with the rivet 806 to meet the travel requirement when the limit handle 9 rotates. The locking plate 2 cooperates with the locking bolt 3 to realize the locking and releasing of the locking structure, that is, to realize the locking function.

[0046] Compared with the traditional locking device, the utility model can achieve a larger and more stable locking force through axial stretching, and at the same time, an anti-loosening self-locking structure design is added.

[0047] The above is only a specific implementation of the utility model, which enables those skilled in the art to understand or implement the utility model. Although detailed descriptions are given with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments, and they should all be covered by the protection scope of the claims.

Claims

1. A self-locking quick locking mechanism with large locking force, characterized in that: It comprises a locking mechanism and an anti-loosening mechanism, the locking mechanism comprising a locking plate (2), a locking bolt (3), a mounting base (1), and a clamping handle (6), the screw rod portion of the locking bolt (3) passes through the locking plate (2) and the head portion is clamped on the rear side of the locking plate (2), and the locking plate (2) is provided with a space for the screw rod portion of the locking bolt (3) to move up and down; The mounting base (1) comprises a bottom plate (12), and a limit buckle (13) extends forward from the bottom plate (12); The front side of the clamping handle (6) is a clamping portion (61), and two vertical connecting plates (62) extend backwards from the left and right sides of the clamping portion (61). The cross section of the clamping portion (61) is a U-shape with the opening facing downwards, and long grooves (63) are provided on two sides of the U-shape. The inner side of the front end of the connecting plate (62) is rotatably connected to the tail of the locking bolt (3), and the outer side of the rear end is movably riveted to the mounting base (1); The anti-loosening mechanism comprises a limit handle (9) and an anti-loosening elastic member (7). The limit handle (9) comprises a hand-held portion (91) on the front side, a limit portion (92) on the middle and lower side, and a fixed portion (93) on the middle and upper side. The fixed portion (93) is movably riveted to the inner side of the front end of the connecting plate (62) through a fourth rivet (804). The hand-held portion (91) is movably riveted to the long groove (63) through a sixth rivet (806). The sixth rivet (806) is elastically connected to the lower side of the connecting plate (62) through the anti-loosening elastic member (7). The limit portion (92) limits the limit handle (9) by cooperating with the limit buckle (13). The anti-loosening elastic member (7) is in a stretched state.

2. A self-locking quick locking mechanism with a large locking force according to claim 1, characterized in that: The mounting base (1) further comprises a left mounting arm, a middle mounting arm and a right mounting arm (11) which are fixed on the bottom plate and arranged vertically and in parallel, the middle mounting arm extending forwardly to form a limit buckle (13), the horizontal height of the limit buckle (13) being not lower than the horizontal height of the bottom plate (12).

3. A self-locking quick locking mechanism with large locking force according to claim 2, characterized in that: It also includes a bolt bushing (5) and a second rivet (802), wherein the side walls of the bolt bushing (5) are provided with through holes, and the bolt bushing (5) is provided with an internal thread, the rear end of the locking bolt (3) is assembled with a locking nut (4) and then assembled into the bolt bushing (5), and the second rivet (802) passes through the through hole and is movably riveted to the front end of the connecting plate (62).

4. A self-locking quick locking mechanism with large locking force according to claim 3, characterized in that: The limit handle (9) further comprises an arc groove (94) arranged at the rear of the limit handle (9); the rear of the limit handle (9) is installed between the bolt bushing (5) and the clamping handle (6) through the arc groove (94); and the second rivet (802) passes through the through hole and the arc groove (94) and is movably riveted to the front end of the connecting plate (62).

5. A self-locking quick locking mechanism with a large locking force according to claim 4, characterized in that: The limiting portion (92) is a rivet three (803) that passes through the lower middle portion of the limiting handle (9).

6. A self-locking quick locking mechanism with a large locking force according to claim 5, characterized in that: A rivet five (805) is riveted through the lower portion of the clamping handle (6); the anti-loosening elastic member (7) is an anti-loosening spring, one end of the anti-loosening spring is connected to the rivet six (806), and the other end is connected to the rivet five (805) at the lower portion of the clamping handle (6).

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