Multifunctional tightening device

Abstract

The utility model relates to a multifunctional fastening device which is characterized in that two fork type rotary lifting hooks in the fastening device are respectively arranged on a binding belt, one fork type rotary lifting hook is fixedly connected with a fixed seat through the binding belt, and the other fork type rotary lifting hook is connected with a belt collecting disc riveting piece through the binding belt; the binding belt is installed on the belt collecting disc riveting piece and contracts along with rotation. The take-up reel riveting piece is connected with and synchronously rotates with the clockwork spring assembly, the ratchet wheel assembly and the crank assembly; the switch assembly is installed on the fixing base. The utility model solves the problems of low efficiency, single function, low convenience and the like in the use process of the conventional tightening device. Through reasonable distribution and mutual nesting of a clockwork spring, a ratchet wheel, a ratchet wheel lock and other mechanisms arranged in the tightening device, one-way extension, one-way contraction tensioning, rapid recovery, free extension and locking functions of a binding belt of the tightening device are achieved, the tensioning function of the tightening device is achieved through arrangement of a crank and one-way contraction, and the use efficiency and usability of the tightening device are improved.

Description

Technical Field

[0001] The utility model relates to a fastener, in particular to a multifunctional fastener, and belongs to the technical field of fasteners. Background Art

[0002] In various transportation fields such as ships and trucks, bolters are needed to secure cargo during transportation, movement, loading and unloading, or storage. Especially inside ships, bolters are needed in large quantities. One end is fixed to the mooring seat of an elevator or transfer vehicle, and the other end is fixed to the fixed part of the cargo to prevent the cargo from tipping over or sliding due to the swaying of the ship during navigation.

[0003] The following problems exist in the current industry's fasteners:

[0004] (1) Due to the large amount of cargo transshipment inside the ship, the fasteners need to be frequently tightened and loosened. Sometimes, multiple fasteners are required for each piece of cargo. Most existing fasteners are ratchet drive sleeves, which gradually loosen or tighten the lashing belt, causing a lot of time waste during use;

[0005] (2) The existing tie-down straps need to be manually recovered and cannot be quickly recovered, resulting in a waste of time during use.

[0006] (3) The existing fastener cannot realize multiple functions such as unidirectional extension, unidirectional contraction, bidirectional extension and contraction or locking of the webbing, cannot be operated with one hand, and is less convenient to use. Summary of the Invention

[0007] The purpose of this utility model is to provide a multifunctional fastener that addresses the problems of low efficiency, single function, and low convenience encountered by existing fasteners. By rationally distributing and nesting the spring, ratchet, and ratchet lock within the fastener, the fastener achieves one-way extension, one-way retraction and tensioning, rapid retraction, free extension and retraction, and locking functions for the fastener's tie strap. The fastener's tensioning function is achieved through the provision of a crank handle and unidirectional retraction, thereby improving the fastener's efficiency and ease of use.

[0008] To achieve the above-mentioned purpose, the technical solution of the utility model is: a multifunctional bolt tightener, including a fork-type rotary hook, a binding belt, a fixing seat, a take-up reel rivet, a spring assembly, a ratchet assembly, a switch assembly, and a crank, wherein two fork-type rotary hooks are respectively installed on the binding belt, wherein one fork-type rotary hook is fixedly connected to the fixing seat through the binding belt, and the other fork-type rotary hook is connected to the take-up reel rivet through the binding belt, and the binding belt is installed on the take-up reel rivet and shrinks with the rotation; the take-up reel rivet is connected to the spring assembly, the ratchet assembly, and the crank assembly and rotates synchronously; the switch assembly is installed on the fixing seat and is in contact with the ratchet assembly.

[0009] Furthermore, the take-up reel riveted part is composed of a take-up reel and a take-up reel flange. The take-up reel flanges are symmetrically arranged on both sides of the take-up reel. The take-up reel and the take-up reel flanges are fixed by riveting.

[0010] Furthermore, the spring assembly comprises a spring shaft, a spring housing, a spring leaf, a spring housing cover, and an external retaining spring. The spring leaf and the spring housing covers on both sides are placed in the spring housing. The spring shaft passes through the spring leaf and the spring housing covers on both sides and is fixedly connected to the inner ring of the spring leaf. The outer ring of the spring leaf is fixedly connected to the spring housing. The end of the spring shaft is fixed by an external retaining spring.

[0011] Furthermore, the ratchet assembly consists of a ratchet cover, a ratchet plate, a ratchet housing, a ratchet lock, and a torsion spring. The ratchet plate, ratchet lock, and torsion spring are installed in the ratchet housing and the ratchet cover. The ratchet plate is installed on the mainspring shaft. A ratchet lock is installed below the ratchet plate. The lower end of the ratchet lock is connected to the ratchet housing via a bolt and can swing around the bolt. The ratchet lock is equipped with a torsion spring, and a switch assembly is installed in the middle of the ratchet lock.

[0012] Furthermore, the switch assembly consists of a cam and a switch lever. The cam is installed in the middle of the ratchet lock and is connected to the switch lever. The rotation of the switch lever drives the cam to rotate, and the cam contacts the ratchet lock, changing the movement state of the ratchet piece.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) Through reasonable design, the utility model realizes that the tie belt can be automatically retracted when the fastener is in the free gear position, which greatly improves the recovery efficiency of the fastener.

[0015] (2) The present invention nests the various mechanisms in a reasonable arrangement, thereby achieving multifunctional integration and greatly reducing the space occupied by the fastener.

[0016] (3) In the present invention, by providing a retracted gear and a crank, the bolt can be tightened more easily, making the cargo more securely tied.

[0017] (4) In the present invention, by setting the extension gear, the user can avoid having to hold the fastener in hand when moving the fastener in the initial stage of securing the cargo, making it more convenient to move the fastener in the initial stage of securing the cargo.

[0018] (5) The replaceable tie straps and fork-type rotating hooks in the present invention can be adapted and replaced according to the weight of the goods to be fastened, thereby ensuring the lightness of the fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the multifunctional fastener of the utility model;

[0020] Figure 2 yes Figure 1 A schematic structural diagram of the take-up reel riveted parts;

[0021] Figure 3 yes Figure 2 sectional view of

[0022] Figure 4 yes Figure 1 A schematic diagram of the structure of the clockwork assembly;

[0023] Figure 5 yes Figure 1 A schematic structural diagram of the ratchet assembly;

[0024] Figure 6 yes Figure 1 A schematic diagram of the structure of the switch assembly in FIG.

[0025] Figure 7 It is a schematic diagram of the working state of the utility model;

[0026] In the figure: fork-type rotating hook 1, binding belt 2, fixing seat 3, take-up reel rivet 4, take-up reel 4-1, take-up reel edge 4-2, spring assembly 5, spring shaft 5-1, spring housing 5-2, spring spring leaf 5-3, spring housing cover 5-4, external retaining spring 5-5, ratchet assembly 6, ratchet cover 6-1, ratchet leaf 6-2, ratchet housing 6-3, ratchet lock 6-4, torsion spring 6-5, switch assembly 7, cam 7-1, switch lever 7-2, crank handle 8. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] like Figure 1 As shown, the utility model provides a multifunctional fastener, comprising a forked rotary hook 1, a binding strap 2, a fixing seat 3, a take-up reel rivet 4, a spring assembly 5, a ratchet assembly 6, a switch assembly 7, and a crank 8. Two forked rotary hooks 1 are mounted on the binding strap 2, one forked rotary hook 1 being fixedly connected to the fixing seat 3 via the binding strap 2, and the other forked rotary hook 1 being connected to the take-up reel rivet 4 via the binding strap 2. The binding strap 2 is mounted on the take-up reel rivet 4 and retracts with the rotation. The take-up reel rivet 4 is connected to the spring assembly 5, the ratchet assembly 6, and the crank assembly 8 and rotates synchronously. The switch assembly 7 is mounted on the fixing seat 3. The crank assembly 8 consists of a crank and a crank handle.

[0029] like Figure 2 As shown in FIG3 , the take-up reel rivet member 4 is composed of a take-up reel 4-1 and a take-up reel flange 4-2. The take-up reel flange 4-2 is symmetrically arranged on both sides of the take-up reel 4-1. The take-up reel 4-1 and the take-up reel flange 4-2 are fixed by riveting.

[0030] like Figure 4 As shown, the clockwork assembly 5 comprises a clockwork shaft 5-1, a clockwork housing 5-2, a clockwork spring 5-3, a clockwork housing cover 5-4, and an external retaining spring 5-5. The clockwork spring 5-3 and the clockwork housing covers 5-4 on either side are placed within the clockwork housing 5-2. The clockwork shaft 5-1 passes through the clockwork spring 5-3 and the clockwork housing covers 5-4 on either side and is fixedly connected to the inner ring of the clockwork spring 5-3. The outer ring of the clockwork spring 5-3 is fixedly connected to the clockwork housing 5-2. The end of the clockwork shaft 5-1 is secured with an external retaining spring 5-5.

[0031] like Figure 5 As shown, the ratchet assembly 6 consists of a ratchet cover 6-1, a ratchet piece 6-2, a ratchet housing 6-3, a ratchet lock 6-4, and a torsion spring 6-5. The ratchet piece 6-2, ratchet lock 6-4, and torsion spring 6-5 are installed in the ratchet housing 6-3 and the ratchet cover 6-1. The ratchet piece 6-2 is installed on the mainspring shaft 5-1. A ratchet lock 6-4 is provided below the ratchet piece 6-2. The lower end of the ratchet lock 6-4 is connected to the ratchet housing 6-3 via a bolt and can swing around the bolt. The ratchet lock 6-4 is provided with a torsion spring 6-5. A switch assembly 7 is provided in the middle of the ratchet lock 6-4.

[0032] like Figure 6 As shown, the switch assembly 7 consists of a cam 7-1 and a switch lever 7-2. The cam 7-1 is mounted between the ratchet lock 6-4 and connected to the switch lever 7-2. Rotation of the switch lever 7-2 drives the cam 7-1, which contacts the ratchet lock 6-4, changing the motion state of the ratchet 6-2.

[0033] like Figure 7 As shown, the utility model provides a method for using a multifunctional fastener, the main process of which is as follows:

[0034] S1, multi-function fastener fixation: fix the fixing base 3 or one end of the lashing strap 2 to the tie-down base or the cargo.

[0035] S2, the binding belt 2 is extended: the switch assembly 7 is switched to the extension position, at which time the binding belt 2 can be pulled out but cannot be retracted.

[0036] S3, fix the lashing strap 2: fix the other end of the lashing strap 2 to the cargo or another tie-down seat.

[0037] S4, tighten the multifunctional fastener: switch the switch assembly 7 to the retraction gear. At this time, the lashing belt 2 can only be retracted and cannot be extended. The multifunctional fastener is tightened by turning the crank 8 to firmly tie the cargo.

[0038] S5, multifunctional fastener locked: switch assembly 7 to the locked position, at which time the multifunctional fastener can neither extend nor retract, and is in a locked state, and the cargo is firmly restrained.

[0039] S6, unlocking the multifunctional fastener: switching the switch assembly 7 to the unlocking position, at which time the lashing strap 2 is in a free state and can be extended or retracted. Loosen the lashing strap 2 on the cargo and the lashing strap 2 can be automatically retracted.

Claims

1. A multifunctional fastener, characterized by: It includes a fork-type rotating hook, a binding belt, a fixing seat, a take-up reel riveted part, a spring assembly, a ratchet assembly, a switch assembly, and a crank. Two fork-type rotating hooks are respectively installed on the binding belt, wherein one fork-type rotating hook is fixedly connected to the fixing seat through the binding belt, and the other fork-type rotating hook is connected to the take-up reel riveted part through the binding belt. The binding belt is installed on the take-up reel riveted part and shrinks with the rotation; the take-up reel riveted part is connected to the spring assembly, the ratchet assembly, and the crank assembly and rotates synchronously; the switch assembly is installed on the fixing seat and is in contact with the ratchet assembly.

2. The multifunctional fastener according to claim 1, characterized in that: The take-up reel riveted parts are composed of a take-up reel and a take-up reel flange. The take-up reel flanges are symmetrically arranged on both sides of the take-up reel. The take-up reel and the take-up reel flanges are fixed by riveting.

3. The multifunctional fastener according to claim 1, characterized in that: The clockwork assembly consists of a clockwork shaft, a clockwork case, a clockwork spring, a clockwork case cover, and an external retaining spring. The clockwork spring and the clockwork case covers on both sides are placed in the clockwork case. The clockwork shaft passes through the clockwork spring and the clockwork case covers on both sides and is fixedly connected to the inner ring of the clockwork spring. The outer ring of the clockwork spring is fixedly connected to the clockwork case, and the end of the clockwork shaft is fixed with an external retaining spring.

4. The multifunctional fastener according to claim 1, characterized in that: The ratchet assembly consists of a ratchet cover, a ratchet piece, a ratchet housing, a ratchet lock, and a torsion spring. The ratchet piece, ratchet lock, and torsion spring are installed in the ratchet housing and the ratchet cover. The ratchet piece is installed on the spring shaft. A ratchet lock is provided under the ratchet piece. The lower end of the ratchet lock is connected to the ratchet housing by a bolt and can swing around the bolt. A torsion spring is provided on the ratchet lock, and a switch assembly is provided in the middle of the ratchet lock.

5. The multifunctional fastener according to claim 1, characterized in that: The switch assembly consists of a cam and a switch lever. The cam is installed in the middle of the ratchet lock and is connected to the switch lever. The rotation of the switch lever drives the cam to rotate, and the cam contacts the ratchet lock, changing the movement state of the ratchet piece.

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