Ratchet wheel bolt assembly

Abstract

The utility model provides a ratchet wheel bolt assembly, and relates to the field of bolt connection. The ratchet bolt assembly comprises a ratchet bolt, a plurality of ratchets are arranged between the head portion and the screw portion of the ratchet bolt, and the ratchet bolt is installed in a ratchet groove above a threaded hole; the rotary clamping piece is rotationally arranged in a side cavity communicated with the side face of the ratchet groove and is provided with a rotating shaft, one end of the rotating shaft extends out of the side cavity, the rotating shaft is sleeved with a ratchet claw, a claw part is arranged on one side of the ratchet claw, and a second clamping opening is formed in the other side of the ratchet claw; the elastic piece is arranged in a slideway communicated with the side surface of the side cavity, one end, facing the side cavity, of the elastic piece is connected with a sliding block, the sliding block is slidably embedded in the slideway, and one end of the sliding block extends out of the slideway to abut against the side surface of the ratchet claw; when the sliding block is clamped with the second clamping opening, the ratchet claws are clamped with ratchets on the ratchet wheel bolt. The fastening degree of the bolt is improved under the condition that a nut and a spring washer are not used.

Description

Technical Field

[0001] The utility model relates to the field of bolt connection, in particular to a ratchet bolt assembly. Background Art

[0002] Bolts are a common fastener used to connect or secure various components and structures. Bolts usually consist of two parts: a head and a shank (a rod with threads).

[0003] When installing existing bolts, appropriate pre-tightening force needs to be applied to ensure the stability of the connection and prevent loosening. Nuts and spring washers are usually used to maintain the required pre-tightening force of the bolts. When in use, the spring washers are installed under the bolts or nuts. When the nuts are tightened, the washers are compressed and provide anti-loosening pre-tightening force after release. However, nuts and spring washers have the disadvantages of being easy to lose during use and being inconvenient to use due to their small size. In addition, the anti-loosening pre-tightening force provided by nuts and spring washers is related to the size of the pre-tightening force applied during installation, and cannot guarantee the effectiveness of the loosening effect. The bolts still need to be checked regularly during use and tightened again when necessary. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art that nuts and spring washers used to prevent bolt loosening are easy to lose, are small in size and inconvenient to use, and the anti-loosening pre-tightening force provided by the nuts and spring washers is related to the size of the pre-tightening force applied during installation and cannot guarantee the effectiveness of the loosening effect. The utility model provides a ratchet bolt assembly which does not require the use of a spring washer and can improve the effectiveness of the anti-loosening effect.

[0005] The technical solution adopted by the utility model is:

[0006] A ratchet bolt assembly, comprising:

[0007] A ratchet bolt, wherein a plurality of ratchet teeth are arranged between the head and the screw portion, and the ratchet teeth are installed in the ratchet groove above the threaded hole;

[0008] A rotating clamping member, rotatably disposed in a side cavity connected to the side of the ratchet groove, having at least one rotating shaft, one end of which extends out of the side cavity, and a ratchet pawl sleeved on the rotating shaft, wherein one side of the ratchet pawl is provided with a pawl portion, and the other side is provided with a second clamping interface; and

[0009] An elastic member is arranged in a slideway connected to the side of the side cavity, and a slider is connected to one end of the elastic member facing the side cavity. The slider is slidably embedded in the slideway, and one end of the slider extends out of the slideway to abut against the side of the ratchet pawl;

[0010] Wherein, when the sliding block is engaged with the second engaging interface, the ratchet pawl is engaged with the ratchet on the ratchet bolt.

[0011] Furthermore, a first locking interface is also provided on the side surface of the ratchet pawl, and when the sliding block is engaged with the first locking interface, the ratchet pawl is separated from the ratchet bolt.

[0012] Furthermore, one end of the sliding block that abuts against the ratchet pawl has a curved surface.

[0013] Furthermore, arc-shaped grooves matching with the arc surface are provided in the first card interface and the second card interface.

[0014] Furthermore, an arc-shaped transition surface is provided at the connection between the first card interface and the second card interface.

[0015] Furthermore, a first limiting portion is provided on the ratchet pawl at a side of the second card interface away from the first card interface; and a second limiting portion is provided on the ratchet pawl at a side of the first card interface away from the second card interface.

[0016] Furthermore, the first limiting portion and the second limiting portion are both in a ratchet shape, and the tooth tip of the first limiting portion is arranged toward the first card interface; the tooth tip of the second limiting portion is arranged toward the second card interface.

[0017] Furthermore, one end of the rotating shaft extending to the outside is connected to an operating rod.

[0018] Furthermore, a hexagonal hole (111) is provided on the upper surface of the head of the ratchet bolt.

[0019] Furthermore, the elastic member is a spring.

[0020] The beneficial effects of the utility model are:

[0021] 1. The utility model fixes the rotation angle of the ratchet bolt by arranging a ratchet on the ratchet bolt, a ratchet claw on the rotating clamping member, and a slider supported by an elastic member, thereby preventing the ratchet bolt from loosening by counterclockwise rotation, and realizing the fastening of the bolt without using a nut and a spring washer, thereby solving the problems in the prior art that the spring washer is easy to lose, is small in size and inconvenient to use, and the anti-loosening pre-tightening force provided by the nut and the spring washer is related to the size of the pre-tightening force applied during installation, and cannot guarantee the effectiveness of the loosening effect;

[0022] 2. The utility model also provides an elastic member and a slider, cooperates with the extended handle on the rotating clamping member, and the first clamping interface on the ratchet pawl, so that when the ratchet bolt is removed, the ratchet and the ratchet pawl can be easily disengaged, and when the slider is engaged with the first clamping interface, the ratchet pawl and the ratchet bolt remain separated, avoiding obstruction to the rotation of the ratchet pawl during the process of removing the ratchet bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the structure of a bolt assembly according to an embodiment of the utility model;

[0025] Figure 2 It is a three-dimensional schematic diagram of a ratchet bolt and a fastener according to an embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the unlocked state of the bolt assembly according to an embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of a locked state of a bolt assembly according to an embodiment of the utility model;

[0028] Figure 5 It is a three-dimensional schematic diagram of a fastener according to a second embodiment of the utility model;

[0029] Figure 6 This is a schematic diagram of the unlocked state of the fastener of the second embodiment of the utility model;

[0030] Figure 7 This is a schematic diagram of a fastener locked state according to the second embodiment of the present utility model.

[0031] Reference numerals: 100 - ratchet bolt, 110 - head, 111 - hexagon socket hole, 122 - ratchet, 130 - screw portion;

[0032] 220-ratchet groove, 230-lateral cavity;

[0033] 300-rotating clamping member, 310-ratchet claw, 312-claw portion, 313-first limiting portion, 314-first clamping interface, 315-arc-shaped transition surface, 316-second clamping interface, 317-second limiting portion, 320-rotating shaft, 322-operating rod;

[0034] 400-elastic part, 410-spring, 420-slider, 422-arc surface. DETAILED DESCRIPTION

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.

[0037] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0038] See also Figure 1-4 The first embodiment provides a ratchet bolt assembly, which can keep the bolt tight without using a nut and a spring washer, and can improve the anti-loosening effect compared with the existing nut and spring washer. The ratchet bolt assembly mainly includes: a ratchet bolt 100, a rotating clamping member 300, and an elastic member 400.

[0039] like Figure 1 , Figure 2 As shown in , the ratchet bolt 100 is mainly composed of a head 110 and a screw portion 130, and is the main fastening component of the bolt assembly of this embodiment. Among them, the head 110 has a larger diameter and a shorter length, and a hexagonal hole 111 is arranged on its upper surface; the screw portion 130 has a smaller diameter and a longer length, and an external thread is arranged on its side. At the same time, a plurality of ratchet teeth 122 are arranged between the head 110 and the screw portion 130, and the plurality of ratchet teeth 122 are evenly distributed along the circumferential direction. When the ratchet bolt 100 is installed, the screw portion 130 is threadedly connected in the threaded hole, and the ratchet teeth 122 are installed in the circular ratchet groove 220 above the threaded hole, and the tip of the ratchet teeth 122 is inclined in the counterclockwise direction, which is used to cooperate with the rotating clamp 300 to prevent the bolt assembly of this embodiment from loosening when in the locked state, and also to avoid hindering the clockwise rotation of the ratchet bolt 100 when it is installed.

[0040] like Figure 1-Figure 4As shown in the figure, the ratchet groove 220 is provided with a side cavity 230 in communication therewith, and the rotating clamp 300 is rotatably arranged in the side cavity 230. The rotating clamp 300 has at least a rotating shaft 320 and a ratchet pawl 310. The rotating shaft 320 is arranged parallel to the screw portion 130 of the ratchet bolt 100, and the inner end of the rotating shaft 320 is rotatably connected to the inner side wall of the side cavity 230, and the outer end thereof extends from the side cavity 230 to the outside, and the end extending to the outside is connected to an operating rod 322 perpendicular to the rotating shaft 320, so that the user can control the rotation of the rotating clamp 300 through the operating rod 322. The ratchet pawl 310 is sleeved on the rotating shaft 320 in the side cavity 230. One side of the ratchet pawl 310 is provided with a claw portion 312 that matches the shape and size of the ratchet 122 and can be engaged with it, and the other side is provided with adjacent first and second card interfaces 314 and 316. The first and second card interfaces 314 and 316 are both right-angled notches, which are used to engage the slider 420 at one end of the elastic member 400 in different states. The entire rotating clamp 300 can rotate around the axial direction of the rotating shaft 320, thereby switching the locked state and unlocked state of the ratchet bolt assembly of this embodiment.

[0041] like Figure 1-Figure 4 As shown in the figure, a slideway is provided at the side position of the side cavity 230 away from the ratchet groove 220, the slideway is connected to the side cavity 230, and the elastic member 400 is provided in the slideway. The elastic member 400 in this embodiment adopts a spring 410, which is arranged in a direction perpendicular to the rotation axis 320, one end of the spring 410 is fixed in the slideway, and the other end faces the side cavity 230 and is connected with a slider 420. The slider 420 is slidably embedded in the slideway, and its main body is in the shape of a quadrangular prism, which is adapted to the slideway. At the same time, one end of the slider 420 extends out of the slideway and abuts against the side of the ratchet claw 310, and the end of the slider 420 abutting against the ratchet claw 310 has an arc surface 422 to reduce the resistance encountered when it switches positions in the first card interface 314 and the second card interface 316. Among them, when the slider 420 is engaged with the first card interface 314, the ratchet pawl 310 is separated from the ratchet bolt 100, and it is in an unlocked state. The rotation of the ratchet bolt 100 is not restricted by the ratchet pawl 310, and the user can tighten and loosen it; when the slider 420 is engaged with the second card interface 316, the ratchet pawl 310 is engaged with the ratchet 122 on the ratchet bolt 100, and it is in a locked state, which ensures that the rotation angle of the ratchet bolt 100 is fixed and will not rotate counterclockwise to cause loosening.

[0042] A specific implementation of this embodiment is:

[0043] When the ratchet bolt 100 needs to be installed, the rotating shaft 320 is first adjusted by the operating rod 322 so that the slider 420 is engaged with the first card interface 314, and the ratchet pawl 310 is separated from the ratchet bolt 100. The user can tighten the ratchet bolt 100 with a tool without applying a large pre-tightening force; then, the rotating shaft 320 is adjusted by the operating rod 322 so that the slider 420 is engaged with the second card interface 316, and the ratchet pawl 310 is engaged with the ratchet teeth 122 on the ratchet bolt 100 to fix the rotation angle of the ratchet bolt 100, after which the ratchet bolt 100 can be used stably for a long time; when the ratchet bolt 100 needs to be removed, the rotating shaft 320 is also adjusted by the operating rod 322 so that the slider 420 is engaged with the first card interface 314, and the ratchet pawl 310 is separated from the ratchet bolt 100, and the user can loosen the ratchet bolt 100 with a tool.

[0044] In this embodiment, the ratchet bolt assembly fixes the rotation angle of the ratchet bolt 100 by setting a ratchet 122 on the ratchet bolt 100, a ratchet claw 310 on the rotating clamp 300, and a slider 420 supported by the elastic member 400. The three cooperate to prevent the ratchet bolt 100 from loosening by counterclockwise rotation, thereby achieving the goal of keeping the bolt tight without using nuts and spring washers. This solves the problems in the prior art that spring washers are easy to lose, are small in size and inconvenient to use, and that the anti-loosening preload force provided by the nuts and spring washers is related to the size of the preload force applied during installation and cannot guarantee the effectiveness of the loosening effect.

[0045] At the same time, in this embodiment, an elastic member 400 and a slider 420 are provided, which cooperate with the extended handle on the rotating clamping member 300 and the first clamping interface 314 on the ratchet pawl 310, so that when the ratchet bolt 100 is removed, the ratchet 122 and the ratchet pawl 310 can be easily disengaged, and when the slider 420 is engaged with the first clamping interface 314, the ratchet pawl 310 and the ratchet bolt 100 remain separated, thereby avoiding obstruction to the rotation of the ratchet pawl 310 during the process of removing the ratchet bolt 100.

[0046] However, in the above embodiment, the first card interface 314 and the second card interface 316 of the ratchet pawl 310 are both right-angled notches, which facilitates the position switching of the slider 420, but there is a shape difference between it and the slider 420, and the effectiveness of the engagement is still insufficient. In the process of adjusting the rotating shaft 320, if the force is not controlled well, the slider 420 may come out from both sides of the first card interface 314 and the second card interface 316. In order to further solve these problems on the basis of the first embodiment, a second embodiment is provided below.

[0047] See also Figure 5-Figure 7In order to keep the slider 420 stably engaged in both the first card interface 314 and the second card interface 316 and prevent it from being easily disengaged from both sides when adjusting the rotating shaft 320, the second embodiment changes the shape and structure of the ratchet claw 310 on the basis of the first embodiment.

[0048] like Figure 5 , Figure 6 As shown in , the ratchet pawl 310 in the second embodiment is also provided with an arc-shaped groove that cooperates with the arc surface 422 in both the first card interface 314 and the second card interface 316. When the slider 420 is engaged in the first card interface 314 or the second card interface 316, the arc surface 422 can fit tightly with the arc-shaped groove to ensure that its position is fixed and improve the effectiveness of the engagement. At the same time, in the second embodiment, a first limiting portion 313 is provided on the side of the ratchet pawl 310 on the side of the second card interface 316 away from the first card interface 314; and a second limiting portion 317 is provided on the side of the ratchet pawl 310 on the side of the first card interface 314 away from the second card interface 316. Among them, the first limiting portion 313 and the second limiting portion 317 are both in the shape of ratchet teeth, and the tooth tip of the first limiting portion 313 is arranged toward the first card interface 314; the tooth tip of the second limiting portion 317 is arranged toward the second card interface 316. During use, when the slider 420 is engaged in the first card interface 314, as shown in Figure 6 As shown, the tooth tip of the first limiting portion 313 abuts against the side of the slider 420, which not only maintains the stability of the slider 420 in the unlocked state, but also prevents the slider 420 from being disengaged from the first card interface 314 due to excessive force during adjustment; when the slider 420 is engaged in the second card interface 316, as shown in FIG. Figure 7 As shown, the tooth tip of the second limiting portion 317 abuts against the side of the slider 420, which also maintains the stability of the slider 420 in the locked state and prevents the slider 420 from escaping from the second card interface 316 due to excessive force during adjustment.

[0049] Preferably, in the second embodiment, since the slider 420 is restricted by the arc-shaped grooves in the first card interface 314 and the second card interface 316 and is not easy to move, a arc-shaped transition surface 315 can be further provided at the connection between the first card interface 314 and the second card interface 316. The arc-shaped transition surface 315 can reduce the resistance of the slider 420 when switching between the first card interface 314 and the second card interface 316. At the same time, thanks to the fact that the stability of the slider 420 in the locked state and the unlocked state in the second embodiment is ensured by the arc-shaped groove, the provision of the arc-shaped transition surface 315 has little effect on the stability of the slider 420 in the two states.

[0050] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A ratchet bolt assembly, characterized in that: Include: A ratchet bolt (100) having a plurality of ratchet teeth (122) disposed between its head (110) and the screw rod (130), wherein the ratchet teeth (122) are installed in a ratchet groove (220) above the threaded hole; A rotating clamping member (300) is rotatably disposed in a side cavity (230) connected to a side of the ratchet groove (220), and has at least one rotating shaft (320), one end of the rotating shaft (320) extends outward from the side cavity (230), and a ratchet pawl (310) is sleeved on the rotating shaft (320), and the ratchet pawl (310) is provided with a pawl portion (312) on one side and a second clamping interface (316) on the other side; and An elastic member (400) is arranged in a slideway connected to a side of the side cavity (230); one end of the elastic member (400) facing the side cavity (230) is connected to a slider (420); the slider (420) is slidably embedded in the slideway, and one end thereof extends out of the slideway to abut against a side of the ratchet pawl (310); Wherein, when the sliding block (420) is engaged with the second engaging interface (316), the ratchet pawl (310) is engaged with the ratchet (122) on the ratchet bolt (100).

2. The ratchet bolt assembly according to claim 1, characterized in that: A first engaging interface (314) is also provided on the side of the ratchet pawl (310); when the sliding block (420) engages with the first engaging interface (314), the ratchet pawl (310) is separated from the ratchet bolt (100).

3. The ratchet bolt assembly according to claim 2, characterized in that: One end of the sliding block (420) that abuts against the ratchet claw (310) has a curved surface (422).

4. The ratchet bolt assembly according to claim 3, characterized in that: The first card interface (314) and the second card interface (316) are both provided with arc-shaped grooves that match the arc surface (422).

5. The ratchet bolt assembly according to claim 4, characterized in that: An arc-shaped transition surface (315) is provided at the connection between the first card interface (314) and the second card interface (316).

6. The ratchet bolt assembly according to claim 2, wherein: A first limiting portion (313) is provided on the ratchet pawl (310) at a side of the second card interface (316) away from the first card interface (314); and a second limiting portion (317) is provided on the ratchet pawl (310) at a side of the first card interface (314) away from the second card interface (316).

7. The ratchet bolt assembly according to claim 6, wherein: The first limiting portion (313) and the second limiting portion (317) are both in the shape of ratchet teeth, the tooth tip of the first limiting portion (313) is arranged towards the first card interface (314), and the tooth tip of the second limiting portion (317) is arranged towards the second card interface (316).

8. The ratchet bolt assembly according to claim 1, wherein: One end of the rotating shaft (320) extending to the outside is connected to an operating rod (322).

9. The ratchet bolt assembly according to claim 1, wherein: A hexagonal hole (111) is provided on the upper surface of the head (110) of the ratchet bolt (100).

10. The ratchet bolt assembly according to claim 1, wherein: The elastic member (400) is a spring (410).

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