A type of fastener

Abstract

This utility model provides a fastening device, including a connecting base, a through shaft rotatably mounted on the connecting base, a ratchet fixed to one side of the through shaft, a rocker arm rotatably mounted to one side of the through shaft and equipped with a pawl mechanism, and an adjusting plate mounted on the through shaft. A through groove is axially formed on the through shaft, and multiple first limiting grooves are provided on the through shaft along both sides of the through groove. A locking mechanism for engaging the first limiting grooves is provided on the adjusting plate. The locking mechanism includes a movable insert rod mounted on the adjusting plate and a locking element for locking the position of the insert rod. When the position of the adjusting plate needs to be adjusted, the adjusting plate is first axially slid along the length of the insert rod, then the insert rod is inserted into the adjusting plate and the protrusion engages with the corresponding first limiting groove. Finally, the locking element locks the position of the insert rod at its lower end, thereby achieving left-right adjustment and fixation of the adjusting plate. Compared with the original design, this is more convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of rope tightening technology, and in particular to a tightening device. Background Technology

[0002] Fastening devices (also known as tensioners) are devices used to bind and secure items or goods, and are widely used for the stability and safety protection of goods during transportation, handling, loading and unloading, and warehousing.

[0003] In the prior art, utility model patent CN214084935U discloses a multifunctional fastening device. This fastening device includes a lifting sling insertion shaft with an adjusting plate on it. In use, binding ropes are installed on the left and right sides of the adjusting plate. By rotating the lifting sling insertion shaft, the shaft drives the binding ropes to perform a winding motion, thereby tightening the two binding ropes. However, the adjustment of the position of the adjusting plate in this structure is inconvenient, affecting the overall efficiency of use. Utility Model Content

[0004] The purpose of this invention is to provide a fastener to solve the technical problem of inconvenient operation of the adjusting plate.

[0005] To solve the above-mentioned technical problems, this utility model provides a fastening device, including a connecting base, a through shaft rotatably mounted on the connecting base, a ratchet fixed to one side of the through shaft, a rocker arm rotatably mounted on one side of the through shaft and equipped with a pawl mechanism, an adjusting plate mounted on the through shaft, a through groove axially opened on the through shaft, a plurality of first limiting grooves provided on the through shaft along both sides of the through groove, and a locking mechanism for locking the first limiting grooves on the adjusting plate. The locking mechanism includes a movable insert rod mounted on the adjusting plate and a locking member for locking the position of the insert rod. One end of the insert rod is provided with a first boss, and the side wall of the insert rod is provided with a protrusion that matches the first limiting groove.

[0006] In a preferred embodiment, the locking element is a threaded nut.

[0007] In a preferred embodiment, the adjustment plate has a through hole, and a second limiting groove matching the protrusion is provided around the through hole.

[0008] In a preferred embodiment, the pawl mechanism includes a mounting base on a rocker arm, a pawl mounted on the mounting base and movably engaged with a ratchet, a flange at the front end of the pawl, and a first compression spring on the pawl between the flange and the mounting base.

[0009] In a preferred embodiment, a first grip is provided on the connecting base, and a second grip is provided on the rocker arm. Both the first grip and the second grip are covered with rubber pads on their outer sides.

[0010] In a preferred embodiment, a second compression spring is provided on the insert rod between the locking member and the insertion shaft, and the length of the protrusion inserted into the first limiting groove is less than the length of the insertion shaft lifted upward.

[0011] The beneficial effects of this utility model are as follows: When it is necessary to adjust the position of the adjustment plate, first slide the adjustment plate along the length of the insertion rod, then insert the insertion rod into the adjustment plate and make the protrusion engage with the corresponding first limiting groove. Then, use a locking member to lock the position of the insertion rod at the lower end of the insertion rod, thereby realizing the left and right adjustment and fixation of the adjustment plate. Compared with the original design, this is more convenient to operate. Furthermore, by setting a second compression spring between the locking member and the insertion shaft, since the depth of the protrusion inserted into the first limiting groove is less than the preset height of the locking member to the adjustment plate, that is, when the insertion rod is lifted upward, when the locking member is raised to the limit position, the protrusion has already disengaged from the locking position of the first limiting groove. In this way, it is not necessary to completely pull the insertion rod upward to disengage the insertion rod from the first limiting groove, thereby quickly adjusting the position of the adjustment plate. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0013] Figure 1 This is a front sectional view of Embodiment 1 of the present invention;

[0014] Figure 2 This is a top view of Embodiment 1 of the present invention;

[0015] Figure 3 This is an isometric view of the adjustment plate installation in Embodiment 1 of this utility model;

[0016] Figure 4 This is a cross-sectional view of the adjustment plate installation in Embodiment 1 of this utility model;

[0017] Figure 5 This is a cross-sectional view of the installation of the adjustment plate in Embodiment 2 of this utility model.

[0018] Reference numerals: connecting base 11; through shaft 12; through groove 121; first limiting groove 122; ratchet 13; rocker arm 14; adjusting plate 15; through hole 151; first grip 16; second grip 17; rubber pad 18; mounting base 21; pawl 22; flange 23; first compression spring 24; locking element 31; second compression spring 33; protrusion 34; first boss 35; insertion rod 36. Detailed Implementation

[0019] In the description of this invention, it should be understood that if terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0020] Example 1:

[0021] Please see Figure 1-5 As shown, the present application provides a technical solution: a fastening device. To solve the above-mentioned technical problems, the present invention provides a fastening device, including a connecting base 11, an insert shaft 12 rotatably disposed on the connecting base 11, a ratchet 13 fixed on one side of the insert shaft 12, a rocker arm 14 rotatably disposed on one side of the insert shaft 12 and provided with a pawl mechanism, an adjusting plate 15 disposed on the insert shaft 12, a through groove 121 axially opened on the insert shaft 12, a plurality of first limiting grooves 122 provided on the insert shaft 12 along both sides of the through groove 121, and a locking mechanism for locking the first limiting grooves 122 provided on the adjusting plate 15. The locking mechanism includes a movable insert rod 36 disposed on the adjusting plate 15 and a locking member 31 for locking the position of the insert rod 36. One end of the insert rod 36 is provided with a first boss 35, and the side wall of the insert rod 36 is provided with a protrusion 34 that matches the first limiting groove 122.

[0022] With the above structure, when it is necessary to adjust the position of the adjusting plate 15 on the through shaft 12, first move the adjusting plate 15 in the length direction of the insert rod 36, then insert the protrusion 34 on the insert rod 36 into the corresponding first limiting groove 122, and then lock the position of the insert rod 36 with the locking member 31 at the lower end of the insert rod 36. This achieves the left and right adjustment and fixation of the adjusting plate 15. Compared with the original design, adjusting the position of the adjusting plate 15 is simple and the operation is more convenient.

[0023] In a preferred embodiment, the locking element 31 is a threaded nut.

[0024] With the above structure, after the insertion rod 36 is inserted into place, the nut can be tightened directly to lock the insertion rod 36. In this way, the protrusion 34 on the insertion rod 36 cannot come out of the first limiting groove 122, thereby fixing the adjusting plate 15.

[0025] In a preferred embodiment, the adjusting plate 15 is provided with a through hole 151, and a second limiting groove matching the protrusion 34 is provided around the through hole 151.

[0026] Using the above structure, the protrusion 34 on the insertion rod 36 can be aligned with the second limiting groove, and then the adjustment plate 15 can be inserted from top to bottom. After the adjustment plate 15 is adjusted into place, the protrusion 34 can be inserted into the first limiting groove 122.

[0027] In a preferred embodiment, the pawl mechanism includes a mounting base 21 mounted on the rocker arm 14, a pawl 22 mounted on the mounting base 21 and movably engaged with the ratchet 13, a flange 23 at the front end of the pawl 22, and a first compression spring 24 on the pawl 22 between the flange 23 and the mounting base 21.

[0028] With the above structure, under the action of the rebound force of the first compression spring 24, the front end of the pawl 22 is engaged inside the ratchet 13, thus locking the ratchet 13. The ratchet 13 can only move in one direction. The coordinated movement of the pawl 22 and the ratchet 13 is a common movement, and its working principle will not be described in detail here.

[0029] In a preferred embodiment, a first grip 16 is provided on the connecting base 11, and a second grip 17 is provided on the rocker arm 14. Both the first grip 16 and the second grip 17 are covered with rubber pads 18.

[0030] The purpose of using the above structure, with the first grip 16 and the second grip 17, is that during operation, one hand can hold the first grip 16 and the other hand can hold the second grip 17, and then the second grip 17 can be rotated back and forth to drive the ratchet 13 to move and tighten the binding rope.

[0031] Example 2:

[0032] Further explanation in conjunction with Example 1;

[0033] This embodiment is a further optimized design based on Embodiment 1. As mentioned above, the repeated content will not be described again. Only the differences from Embodiment 1 will be described. The differences are as follows:

[0034] In a preferred embodiment, a second compression spring 33 is provided on the insertion rod 36 between the locking member 31 and the insertion shaft 12, and the length of the protrusion 34 inserted into the first limiting groove 122 is less than the length of the insertion shaft 12 that is lifted upward.

[0035] With the above structure, when the position of the adjusting plate 15 needs to be adjusted, it is not necessary to completely pull out the insert rod 36. It is only necessary to lift the insert rod 36 upward a certain distance. At this time, the locking member 31 presses the second compression spring 33 upward. Since the depth of the protrusion 34 inserted into the first limiting groove 122 is less than the reserved length from the insertion shaft 12 to the locking member 31, the second compression spring 33 is provided at this time. The compression limit of the second compression spring 33 is also greater than the depth of the protrusion 34 inserted into the first limiting groove 122. In this way, the second compression spring 33 can be lifted until it is compressed to the limit position. At this time, the protrusion 34 can move upward until it is disengaged from the locking position with the first limiting groove 122. At this time, the adjusting plate 15 can be moved. After the adjusting plate 15 is adjusted to the position, the insert rod 36 is released. Under the rebound action of the second compression spring 33, the protrusion 34 moves downward and locks into the first limiting groove 122, thereby fixing the position of the adjusting plate 15.

[0036] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A tethering device, characterized by: The device includes a connecting base (11), a through shaft (12) rotatably mounted on the connecting base (11), a ratchet (13) fixed on one side of the through shaft (12), a rocker arm (14) rotatably mounted on one side of the through shaft (12) and provided with a pawl mechanism, an adjusting plate (15) mounted on the through shaft (12), a through groove (121) axially opened on the through shaft (12), a plurality of first limiting grooves (122) provided on the through shaft (12) on both sides of the through groove (121), a locking mechanism for locking the first limiting grooves (122) provided on the adjusting plate (15), the locking mechanism including a movable insert rod (36) mounted on the adjusting plate (15) and a locking member (31) for locking the position of the insert rod (36), a first boss (35) provided at one end of the insert rod (36), and a protrusion (34) matching the first limiting groove (122) provided on the side wall of the insert rod (36).

2. A tethering device according to claim 1, wherein: The locking element (31) is a threaded nut.

3. The tethering device of claim 1, wherein: A through hole (151) is provided on the adjustment plate (15), and a second limiting groove matching the protrusion (34) is provided around the through hole (151).

4. The tethering device of claim 1, wherein: The pawl mechanism includes a mounting base (21) on the rocker arm (14), a pawl (22) on the mounting base (21) and movable into the ratchet (13), a flange (23) at the front end of the pawl (22), and a first compression spring (24) on the pawl (22) between the flange (23) and the mounting base (21).

5. The tethering device of claim 1, wherein: A first grip (16) is provided on the connecting base (11), and a second grip (17) is provided on the rocker arm (14). Rubber pads (18) are covered on the outside of both the first grip (16) and the second grip (17).

6. A tethering device according to claim 2, wherein: A second compression spring (33) is provided on the insert (36) between the locking member (31) and the insert shaft (12), and the length of the protrusion (34) inserted into the first limiting groove (122) is less than the length of the insert shaft (12) that is lifted upward.

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