Trailer arm fastener

Abstract

The utility model relates to the technical field of fasteners, and discloses a trailer arm fastener which comprises a trailer arm, a fixed arm, a fastening rod and a fastening block, the trailer arm is connected with the fixed arm, the fastening block is provided with a circular groove, the upper end of the fastening rod is provided with a threaded hole, the fastening rod penetrates through the circular groove and is in threaded connection with a locking device, the locking device is rotationally connected with a top block, and the top block is connected with the trailer arm. The end, away from the locking device, of the jacking block is connected with the circular groove, the upper end of the fastening rod is inserted into the circular groove, the jacking block is taken up to connect the locking device with the fastening rod, at the moment, the fastening rod is located at the head position of the fixing arm to be clamped, and the jacking block is rotated to push the fastening block to be extruded to the position above the trailer arm to be fixed. When the ejector block is rotated to enable the other end of the ejector block to be inserted into the circular groove, the ejector block is parallel to the fastening block at the moment, so that the fastening device is not prone to loosening, the limiting effect of the fastening device on the trailer arm is guaranteed, and the service life of the fastening device and the service life of the trailer arm can be well prolonged.

Description

Technical Field

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

[0002] The trailer arm will shake when the car is running, causing instability of the trailer arm. Over time, there will be certain damage to the trailer arm. At this time, a fastener is needed to stabilize the trailer arm.

[0003] Usually, the fastener uses a plate and a fastening rod to fix the trailer arm to the rear fixed arm through screws, but the screws will loosen with constant shaking, making the fastener lose its function, and then the fastener and the trailer arm will collide, causing damage to the device. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a trailer arm fastener to solve the problems raised by the background technology, so that the fastener will not be easily loosened, the fastener can limit the trailer arm, and the service life of the fastener and the trailer arm can be well extended.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a trailer arm fastener, comprising a trailer arm, a fixed arm, a fastening rod and a fastening block, the trailer arm is connected to the fixed arm, the fastening block is provided with a circular groove, a threaded hole is provided at the upper end of the fastening rod, the fastening rod passes through the circular groove and is threadedly connected to a locking device, the locking device is rotatably connected to a top block, and one end of the top block away from the locking device is connected to the circular groove.

[0006] As a preferred technical solution of the utility model, the locking device includes a threaded rod, a rotating rod and two limit rings. The threaded rod is threadedly connected to the threaded hole, the upper end of the threaded rod is connected to the rotating rod, the two ends of the rotating rod are rotatably connected to the top block, and the two limit rings are connected to the rotating rod and are respectively arranged on both sides of the top block.

[0007] As a preferred technical solution of the utility model, one end of the top block near the locking device is arranged in an arc shape.

[0008] As a preferred technical solution of the utility model, one end of the top block away from the locking device is connected with a round block, and the round block is matched with the round groove.

[0009] As a preferred technical solution of the utility model, the top block is provided with a taking groove.

[0010] As a preferred technical solution of the utility model, the threaded rod is penetrated by a rubber pad.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The fastening block is provided with a circular groove, and the upper end of the fastening rod is provided with a threaded hole. The fastening rod passes through the circular groove and is threadedly connected to a locking device. The locking device is rotatably connected to a top block, and one end of the top block away from the locking device is connected to the circular groove. The upper end of the fastening rod is inserted into the circular groove, and the top block is picked up to connect the locking device with the fastening rod. At this time, the fastening rod is stuck at the head position of the fixed arm, and the rotating top block pushes the fastening block to be squeezed to the top of the trailer arm to form a fixation. The top block is rotated to insert the other end of the top block into the circular groove. At this time, the top block is parallel to the fastening block, so that the fastener will not be easily loosened, thereby ensuring the restriction effect of the fastener on the trailer arm and also well extending the service life of the fastener and the trailer arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0014] Figure 1 It is a schematic diagram of the overall structure of the left side of a trailer arm fastener of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall structure of the right side of a trailer arm fastener of the utility model;

[0016] Figure 3 The utility model is a schematic cross-sectional structure diagram of a locking device for a trailer arm fastener.

[0017] In the figure: 1, trailer arm; 2, fixed arm; 3, fastening rod; 4, fastening block; 5, round groove; 6, threaded hole; 7, locking device; 701, threaded rod; 702, rotating rod; 703, limiting ring; 8, top block; 9, round block; 10, taking groove; 11, rubber pad. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3When the cam 1 is in the unlock state, the locking device 7 is locked and the locking device 7 is locked.

[0020] like Figure 2 and Figure 3 As shown, the locking device 7 includes a threaded rod 701, a rotating rod 702 and two limiting rings 703. The threaded rod 701 is threadedly connected to the threaded hole 6, the upper end of the threaded rod 701 is connected to the rotating rod 702, the two ends of the rotating rod 702 are rotatably connected to the top block 8, and the two limiting rings 703 are connected to the rotating rod 702 and are respectively arranged on both sides of the top block 8. When locking, the top block 8 is first erected, and the top block 8 is rotated so that the threaded rod 701 is connected to 6 tightly enough, and the top block 8 is rotated by the rotating rod 702 so that the top block 8 is in a state parallel to the fastening block 4, and the other end of the top block 8 is connected to the circular groove 5 of the fastening block 4 to complete the locking.

[0021] like Figure 1 and Figure 2 As shown, one end of the top block 8 near the locking device 7 is arranged in an arc shape, which is convenient for the rotation of the top block 8 in the vertical state and is also more convenient when the top block 8 is rotated downward.

[0022] like Figure 1 and Figure 2 As shown, one end of the top block 8 away from the locking device 7 is connected with a round block 9, and the round block 9 is matched with the circular groove 5. The round block 9 is a material of silicone, which has a certain friction force. When the round block 9 is inserted into the circular groove 5, this end of the top block 8 can be well limited.

[0023] like Figure 1 As shown, the top block 8 is provided with a taking slot 10, which is convenient for the user to pull the top block 8 and is also convenient for daily carrying.

[0024] like Figure 2 As shown, the threaded rod 701 is penetrated by a rubber pad 11, which reduces the friction on the fastening block 4 when the top block 8 rotates, and has a certain locking force when the top block 8 rotates with the rotating rod 702.

[0025] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations 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 orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A trailer arm fastener, comprising a trailer arm (1), a fixed arm (2), a fastening rod (3) and a fastening block (4), wherein the trailer arm (1) is connected to the fixed arm (2), and characterized in that: The fastening block (4) is provided with a circular groove (5), the upper end of the fastening rod (3) is provided with a threaded hole (6), the fastening rod (3) passes through the circular groove (5) and is threadedly connected to a locking device (7), the locking device (7) is rotatably connected to a top block (8), and one end of the top block (8) away from the locking device (7) is connected to the circular groove (5).

2. A trailer arm fastener according to claim 1, characterized in that: The locking device (7) comprises a threaded rod (701), a rotating rod (702) and two limiting rings (703); the threaded rod (701) is threadedly connected to the threaded hole (6); the upper end of the threaded rod (701) is connected to the rotating rod (702); both ends of the rotating rod (702) are rotatably connected to the top block (8); and the two limiting rings (703) are connected to the rotating rod (702) and are respectively arranged on both sides of the top block (8).

3. A trailer arm fastener according to claim 1, characterized in that: One end of the top block (8) close to the locking device (7) is arranged in an arc shape.

4. A trailer arm fastener according to claim 1, characterized in that: One end of the top block (8) away from the locking device (7) is connected to a round block (9), and the round block (9) is matched with the round groove (5).

5. The trailer arm fastener according to claim 1, characterized in that: The top block (8) is provided with a taking groove (10).

6. A trailer arm fastener according to claim 2, characterized in that: The threaded rod (701) is provided with a rubber pad (11).

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